[libpng10] Imported from libpng-1.0.29rc2.tar

ANNOUNCE

@@ -1,61 +1,110 @@
 
-Libpng 1.5.2 - March 31, 2011
+Libpng 1.0.29rc2 - September 26, 2007
 
-This is a public release of libpng, intended for use in production codes.
+This is not intended to be a public release.  It will be replaced
+within a few weeks by a public version or by another test version.
 
 Files available for download:
 
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   libpng-1.5.2.tar.xz (LZMA-compressed, recommended)
+   libpng-1.0.29rc2.tar.gz
-   libpng-1.5.2.tar.gz
+   libpng-1.0.29rc2.tar.bz2
-   libpng-1.5.2.tar.bz2
+
+Source files with LF line endings (for Unix/Linux) without the
+"configure" script
+
+   libpng-1.0.29rc2-no-config.tar.gz
+   libpng-1.0.29rc2-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lpng152.7z  (LZMA-compressed, recommended)
+   lp1029r02.zip
-   lpng152.zip
+   lp1029r02.tar.bz2
+
+Project files
+
+   libpng-1.0.29rc2-project-netware.zip
+   libpng-1.0.29rc2-project-wince.zip
 
 Other information:
 
-   libpng-1.5.2-README.txt
+   libpng-1.0.29rc2-README.txt
-   libpng-1.5.2-LICENSE.txt
+   libpng-1.0.29rc2-KNOWNBUGS.txt
+   libpng-1.0.29rc2-LICENSE.txt
+   libpng-1.0.29rc2-Y2K-compliance.txt
 
-Changes since the last public release (1.5.2):
+Changes since the last public release (1.0.27):
 
-  More -Wshadow fixes for older gcc compilers.  Older gcc versions apparently
+version 1.2.20beta01 [August 19, 2007]
-    check formal parameters names in function declarations (as well as
+  Fixed problem with compiling pnggccrd.c on Intel-Apple platforms.
-    definitions) to see if they match a name in the global namespace.
+  Added PNG_NO_ERROR_TEXT feature, with demo in contrib/pngminim
-  Revised PNG_EXPORTA macro to not use an empty parameter, to accommodate the
+  Removed define PNG_WARN_UNINITIALIZED_ROW 1 /* 0: warning; 1: error */
-    old VisualC++ preprocessor.
+    because it caused some trouble.
-  Turned on interlace handling in png_read_png().
+
-  Fixed gcc pendantic warnings.
+version 1.2.20beta02 [August 20, 2007]
-  Handle longjmp in Cygwin.
+  Avoid compiling pnggccrd.c on Intel-Apple platforms.
-  Fixed png_get_current_row_number() in the interlaced case.
+
-  Cleaned up ALPHA flags and transformations.
+version 1.2.20beta03 [August 20, 2007]
-  Implemented expansion to 16 bits.
+  Added "/D PNG_NO_MMX_CODE" to the non-mmx builds of projects/visualc6
-  Fixed mistake in the descriptions of user read_transform and write_transform
+    and visualc71.
-    function prototypes in the manual.  The row_info struct is png_row_infop.
+
-  Corrected png_get_current_row_number documentation
+version 1.2.20beta04 [August 21, 2007]
-  Fixed the read/write row callback documentation.
+  Revised pngvcrd.c for improved efficiency (Steve Snyder).
-    This documents the current behavior, where the callback is called after
+
-    every row with information pertaining to the next row.
+version 1.2.20rc1 [August 23, 2007]
-  Fixed scripts/makefile.vcwin32
+  Revised pngconf.h to set PNG_NO_MMX_CODE for gcc-3.x compilers.
-  Updated contrib/pngsuite/README to add the word "modify".
+
-  Define PNG_ALLOCATED and other attributes to blank when _MSC_VER<1300.
+version 1.2.20rc2 [August 27, 2007]
-  ifdef out mask arrays in pngread.c when interlacing is not supported.
+  Revised scripts/CMakeLists.txt
-  Added a hint to try CPP=/bin/cpp if "cpp -E" fails in scripts/pnglibconf.mak
+  Revised #ifdefs to ensure one and only one of pnggccrd.c, pngvcrd.c,
-    and in contrib/pngminim/*/makefile, eg., on SunOS 5.10, and removed "strip"
+    or part of pngrutil.c is selected.
-    from the makefiles.
+
-  Fixed a bug (present since libpng-1.0.7) that makes png_handle_sPLT() fail
+version 1.2.20rc3 [September 26, 2007]
-    to compile when PNG_NO_POINTER_INDEXING is defined (Chubanov Kirill)
+  Remove a little more code in pngwutil.c when PNG_NO_WRITE_FILTER is selected.
-  Don't include standard header files in png.h while building the symbol table,
+  Added /D _CRT_SECURE_NO_WARNINGS to visual6c and visualc71 projects.
-    to avoid cpp failure on SunOS (introduced PNG_BUILDING_SYMBOL_TABLE macro).
+  Compile png_mmx_support() in png.c even when PNG_NO_MMX_CODE is defined.
+  Restored a "superfluous" #ifdef that was removed from 1.2.20rc2 pnggccrd.c,
+    breaking the png_mmx_support() function.
+
+version 1.2.20rc4 [September 1, 2007]
+  Removed Intel contributions (MMX, Optimized C).
+
+version 1.2.20rc5 [September 2, 2007]
+  Restored configure and Makefile.in to rc3 and put a snippet of code in
+    pnggccrd.c, to ensure configure makes the same PNG_NO_MMX_CODE selection
+
+version 1.2.20rc6 [September 2, 2007]
+  Fixed bugs in scripts/CMakeLists.txt
+  Removed pngvcrd.c references from msvc projects.
+
+version 1.0.28 and 1.2.20 [September 8, 2007]
+  Removed "(NO READ SUPPORT)" from png_get_header_version() string.
+
+version 1.2.21beta1 [September 14, 2007]
+  Fixed various mistakes reported by George Cook and Jeff Phillips:
+  logical vs bitwise NOT in pngrtran.c, bug introduced in 1.2.19rc2
+  16-bit cheap transparency expansion, bug introduced in 1.2.19beta2
+  errors with sizeof(unknown_chunk.name), bugs introduced in 1.2.19beta11
+  <= compare with unsigned var in pngset.c, should be ==.
+
+version 1.2.21beta2 [September 18, 2007]
+  Removed some extraneous typecasts.
+
+version 1.2.21rc1 [September 25, 2007]
+  Fixed potential out-of-bounds reads in png_handle_pCAL() and
+    png_handle_ztXt() ("flayer" results reported by Tavis Ormandy).
+
+version 1.2.21rc2 [September 26, 2007]
+  Fixed potential out-of-bounds reads in png_handle_sCAL(),
+    png_handle_iTXt(), and png_push_read_tEXt().
+  Remove some PNG_CONST declarations from pngwutil.c to avoid compiler warnings
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
-(subscription required; visit
+
+(subscription required; visit 
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
 to subscribe) or to glennrp at users.sourceforge.net
 

CMakeLists.txt

@@ -1,406 +0,0 @@
-cmake_minimum_required(VERSION 2.4.4)
-set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
-
-if(UNIX AND NOT DEFINED CMAKE_BUILD_TYPE)
-  if(CMAKE_MAJOR_VERSION EQUAL 2 AND CMAKE_MINOR_VERSION EQUAL 4)
-    # workaround CMake 2.4.x bug
-    set(CMAKE_BUILD_TYPE "RelWithDebInfo" CACHE STRING
-        "Choose the type of build, options are:
-           None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used)
-           Debug
-           Release
-           RelWithDebInfo
-           MinSizeRel.")
-  else()
-    set(CMAKE_BUILD_TYPE "RelWithDebInfo" CACHE STRING
-        "Choose the type of build, options are:
-           None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used)
-           Debug
-           Release
-           RelWithDebInfo
-           MinSizeRel.")
-  endif()
-endif()
-
-project(libpng C)
-enable_testing()
-
-# Copyright (C) 2007-2011 Glenn Randers-Pehrson
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-set(PNGLIB_MAJOR 1)
-set(PNGLIB_MINOR 5)
-set(PNGLIB_RELEASE 2)
-set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
-set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
-
-# needed packages
-find_package(ZLIB REQUIRED)
-include_directories(${ZLIB_INCLUDE_DIR})
-
-if(NOT WIN32)
-  find_library(M_LIBRARY
-    NAMES m
-    PATHS /usr/lib /usr/local/lib
-  )
-  if(NOT M_LIBRARY)
-    message(STATUS
-      "math library 'libm' not found - floating point support disabled")
-  endif()
-else()
-  # not needed on windows
-  set(M_LIBRARY "")
-endif()
-
-# COMMAND LINE OPTIONS
-if(DEFINED PNG_SHARED)
-  option(PNG_SHARED "Build shared lib" ${PNG_SHARED})
-else()
-  option(PNG_SHARED "Build shared lib" ON)
-endif()
-if(DEFINED PNG_STATIC)
-  option(PNG_STATIC "Build static lib" ${PNG_STATIC})
-else()
-  option(PNG_STATIC "Build static lib" ON)
-endif()
-
-if(MINGW)
-  option(PNG_TESTS  "Build pngtest" NO)
-else()
-  option(PNG_TESTS  "Build pngtest" YES)
-endif()
-
-option(PNG_NO_CONSOLE_IO "FIXME" YES)
-option(PNG_NO_STDIO      "FIXME" YES)
-option(PNG_DEBUG         "Build with debug output" NO)
-option(PNGARG            "FIXME" YES)
-#TODO:
-# PNG_CONSOLE_IO_SUPPORTED
-
-# maybe needs improving, but currently I don't know when we can enable what :)
-set(png_asm_tmp "OFF")
-if(NOT WIN32)
-  find_program(uname_executable NAMES uname PATHS /bin /usr/bin /usr/local/bin)
-  if(uname_executable)
-    exec_program(${uname_executable}
-                 ARGS --machine OUTPUT_VARIABLE uname_output)
-    if("uname_output" MATCHES "^.*i[1-9]86.*$")
-      set(png_asm_tmp "ON")
-    else("uname_output" MATCHES "^.*i[1-9]86.*$")
-      set(png_asm_tmp "OFF")
-    endif("uname_output" MATCHES "^.*i[1-9]86.*$")
-  endif(uname_executable)
-else()
-  # this env var is normally only set on win64
-  set(TEXT "ProgramFiles(x86)")
-  if("$ENV{${TEXT}}" STREQUAL "")
-    set(png_asm_tmp "ON")
-  endif("$ENV{${TEXT}}" STREQUAL "")
-endif()
-
-# SET LIBNAME
-set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})
-
-# to distinguish between debug and release lib
-set(CMAKE_DEBUG_POSTFIX "d")
-
-# Use the prebuilt pnglibconf.h file from the scripts folder
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt
-               ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h)
-include_directories(${CMAKE_CURRENT_BINARY_DIR})
-
-# OUR SOURCES
-set(libpng_public_hdrs
-  png.h
-  pngconf.h
-  ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h
-)
-set(libpng_sources
-  ${libpng_public_hdrs}
-  pngdebug.h
-  pnginfo.h
-  pngpriv.h
-  pngstruct.h
-  png.c
-  pngerror.c
-  pngget.c
-  pngmem.c
-  pngpread.c
-  pngread.c
-  pngrio.c
-  pngrtran.c
-  pngrutil.c
-  pngset.c
-  pngtrans.c
-  pngwio.c
-  pngwrite.c
-  pngwtran.c
-  pngwutil.c
-)
-set(pngtest_sources
-  pngtest.c
-)
-# SOME NEEDED DEFINITIONS
-
-add_definitions(-DPNG_CONFIGURE_LIBPNG)
-
-if(_AIX)
-  add_definitions(-D_ALL_SOURCE)
-endif(_AIX)
-
-if(MSVC)
-  add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE)
-endif(MSVC)
-
-if(PNG_SHARED OR  NOT MSVC)
-  #if building msvc static this has NOT to be defined
-  add_definitions(-DZLIB_DLL)
-endif()
-
-
-if(PNG_CONSOLE_IO_SUPPORTED)
-  add_definitions(-DPNG_CONSOLE_IO_SUPPORTED)
-endif()
-
-if(PNG_NO_CONSOLE_IO)
-  add_definitions(-DPNG_NO_CONSOLE_IO)
-endif()
-
-if(PNG_NO_STDIO)
-  add_definitions(-DPNG_NO_STDIO)
-endif()
-
-if(PNG_DEBUG)
-  add_definitions(-DPNG_DEBUG)
-endif()
-
-if(NOT M_LIBRARY AND NOT WIN32)
-  add_definitions(-DPNG_NO_FLOATING_POINT_SUPPORTED)
-endif()
-
-# NOW BUILD OUR TARGET
-include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${ZLIB_INCLUDE_DIR})
-
-if(PNG_SHARED)
-  add_library(${PNG_LIB_NAME} SHARED ${libpng_sources})
-  if(MSVC)
-    # msvc does not append 'lib' - do it here to have consistent name
-    set_target_properties(${PNG_LIB_NAME} PROPERTIES PREFIX "lib")
-    set_target_properties(${PNG_LIB_NAME} PROPERTIES IMPORT_PREFIX "lib")
-  endif()
-  target_link_libraries(${PNG_LIB_NAME} ${ZLIB_LIBRARY} ${M_LIBRARY})
-endif()
-
-if(PNG_STATIC)
-# does not work without changing name
-  set(PNG_LIB_NAME_STATIC ${PNG_LIB_NAME}_static)
-  add_library(${PNG_LIB_NAME_STATIC} STATIC ${libpng_sources})
-  if(MSVC)
-    # msvc does not append 'lib' - do it here to have consistent name
-    set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES PREFIX "lib")
-  endif()
-  target_link_libraries(${PNG_LIB_NAME_STATIC} ${ZLIB_LIBRARY} ${M_LIBRARY})
-endif()
-
-
-if(PNG_SHARED AND WIN32)
-  set_target_properties(${PNG_LIB_NAME} PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
-endif()
-
-if(PNG_TESTS AND PNG_SHARED)
-  # does not work with msvc due to png_lib_ver issue
-  add_executable(pngtest ${pngtest_sources})
-  target_link_libraries(pngtest ${PNG_LIB_NAME})
-  add_test(pngtest ./pngtest ${CMAKE_CURRENT_SOURCE_DIR}/pngtest.png)
-endif()
-
-#
-# Set a variable with CMake code which:
-# Creates a symlink from src to dest (if possible) or alternatively
-# copies if different.
-macro(_png_generate_symlink_code CODE SRC DEST)
-  if(WIN32 AND NOT CYGWIN)
-    set(_png_gsc_message "Copying ${SRC} to ${DEST} if needed")
-    set(_png_gsc_operation "copy_if_different")
-  else()
-    set(_png_gsc_message "Symlinking ${SRC} to ${DEST}")
-    set(_png_gsc_operation "create_symlink")
-  endif()
-
-  set(${CODE} "
-    message(STATUS \"${_png_gsc_message}\")
-    execute_process(COMMAND \${CMAKE_COMMAND} -E ${_png_gsc_operation}
-      \"${SRC}\" \"${DEST}\")
-    ")
-endmacro()
-
-# CREATE PKGCONFIG FILES
-# we use the same files like ./configure, so we have to set its vars
-if(NOT DEFINED CMAKE_INSTALL_LIBDIR)
-  set(CMAKE_INSTALL_LIBDIR lib)
-endif(NOT DEFINED CMAKE_INSTALL_LIBDIR)
-set(prefix      ${CMAKE_INSTALL_PREFIX})
-set(exec_prefix ${CMAKE_INSTALL_PREFIX})
-set(libdir      ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR})
-set(includedir  ${CMAKE_INSTALL_PREFIX}/include)
-set(LIBS        "-lz -lm")
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in
-  ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc @ONLY)
-_png_generate_symlink_code(PNG_PC_INSTALL_CODE
-  ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc
-  ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc)
-install(CODE ${PNG_PC_INSTALL_CODE})
-
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in
-  ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config @ONLY)
-_png_generate_symlink_code(PNG_CONFIG_INSTALL_CODE
-  ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
-  ${CMAKE_CURRENT_BINARY_DIR}/libpng-config)
-install(CODE ${PNG_CONFIG_INSTALL_CODE})
-
-# SET UP LINKS
-if(PNG_SHARED)
-  set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#   VERSION 15.${PNGLIB_RELEASE}.1.5.2
-    VERSION 15.${PNGLIB_RELEASE}.0
-    SOVERSION 15
-    CLEAN_DIRECT_OUTPUT 1)
-endif()
-if(PNG_STATIC)
-  # MSVC doesn't use a different file extension for shared vs. static
-  # libs.  We are able to change OUTPUT_NAME to remove the _static
-  # for all other platforms.
-  if(NOT MSVC)
-    set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES
-      OUTPUT_NAME ${PNG_LIB_NAME}
-      CLEAN_DIRECT_OUTPUT 1)
-  endif()
-endif()
-
-# If CMake > 2.4.x, we set a variable used below to export
-# targets to an export file.
-# TODO: Use VERSION_GREATER after our cmake_minimum_required >= 2.6.2
-if(CMAKE_MAJOR_VERSION GREATER 1 AND CMAKE_MINOR_VERSION GREATER 4)
-  set(PNG_EXPORT_RULE EXPORT libpng)
-elseif(CMAKE_MAJOR_VERSION GREATER 2) # future proof
-  set(PNG_EXPORT_RULE EXPORT libpng)
-endif()
-
-# INSTALL
-if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
-  if(PNG_SHARED)
-    install(TARGETS ${PNG_LIB_NAME}
-        ${PNG_EXPORT_RULE}
-        RUNTIME DESTINATION bin
-        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
-
-    # Create a symlink for libpng.dll.a => libpng15.dll.a on Cygwin
-    if(CYGWIN)
-      _png_generate_symlink_code(PNG_SHARED_IMPLIB_INSTALL_CODE
-        ${PNGLIB_NAME}${CMAKE_IMPORT_LIBRARY_SUFFIX}
-        libpng${CMAKE_IMPORT_LIBRARY_SUFFIX})
-      install(CODE ${PNG_SHARED_IMPLIB_INSTALL_CODE})
-      install(FILES
-        ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_IMPORT_LIBRARY_SUFFIX}
-        DESTINATION ${CMAKE_INSTALL_LIBDIR})
-    endif()
-
-    if(NOT WIN32)
-      IF(CMAKE_LIBRARY_OUTPUT_DIRECTORY)
-        _png_generate_symlink_code(PNG_SHARED_INSTALL_CODE
- ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${PNGLIB_NAME}${CMAKE_SHARED_LIBRARY_SUFFIX}
- ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/libpng${CMAKE_SHARED_LIBRARY_SUFFIX})
-                install(CODE ${PNG_SHARED_INSTALL_CODE})
-                install(FILES
- ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/libpng${CMAKE_SHARED_LIBRARY_SUFFIX}
-                DESTINATION ${CMAKE_INSTALL_LIBDIR})
-      ELSE(CMAKE_LIBRARY_OUTPUT_DIRECTORY)
-        _png_generate_symlink_code(PNG_SHARED_INSTALL_CODE
-           ${PNGLIB_NAME}${CMAKE_SHARED_LIBRARY_SUFFIX}
-           libpng${CMAKE_SHARED_LIBRARY_SUFFIX})
-        install(CODE ${PNG_SHARED_INSTALL_CODE})
-        install(FILES
-           ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_SHARED_LIBRARY_SUFFIX}
-                DESTINATION ${CMAKE_INSTALL_LIBDIR})
-      ENDIF(CMAKE_LIBRARY_OUTPUT_DIRECTORY)
-    endif()
-  endif()
-
-  if(PNG_STATIC)
-    install(TARGETS ${PNG_LIB_NAME_STATIC}
-        ${PNG_EXPORT_RULE}
-            LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-            ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
-    if(NOT WIN32 OR CYGWIN)
-      IF(CMAKE_ARCHIVE_OUTPUT_DIRECTORY)
-         _png_generate_symlink_code(PNG_STATIC_INSTALL_CODE
-${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/${PNGLIB_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX}
-        ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/libpng${CMAKE_STATIC_LIBRARY_SUFFIX})
-        install(CODE ${PNG_STATIC_INSTALL_CODE})
-        install(FILES
-          ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/libpng${CMAKE_STATIC_LIBRARY_SUFFIX}
-             DESTINATION ${CMAKE_INSTALL_LIBDIR})
-      ELSE(CMAKE_ARCHIVE_OUTPUT_DIRECTORY)
-        _png_generate_symlink_code(PNG_STATIC_INSTALL_CODE
-           ${PNGLIB_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX}
-           libpng${CMAKE_STATIC_LIBRARY_SUFFIX})
-        install(CODE ${PNG_STATIC_INSTALL_CODE})
-        install(FILES
-          ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_STATIC_LIBRARY_SUFFIX}
-                     DESTINATION ${CMAKE_INSTALL_LIBDIR})
-      ENDIF(CMAKE_ARCHIVE_OUTPUT_DIRECTORY)
-    endif()
-  endif()
-endif()
-
-if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
-  install(FILES ${libpng_public_hdrs}   DESTINATION include)
-  install(FILES ${libpng_public_hdrs}   DESTINATION include/${PNGLIB_NAME})
-endif()
-if(NOT SKIP_INSTALL_EXECUTABLES AND NOT SKIP_INSTALL_ALL )
-  install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config DESTINATION bin)
-  install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
-          DESTINATION bin)
-endif()
-if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
-  # Install man pages
-  if(NOT PNG_MAN_DIR)
-    set(PNG_MAN_DIR "share/man")
-  endif()
-  install(FILES libpng.3 libpngpf.3      DESTINATION ${PNG_MAN_DIR}/man3)
-  install(FILES png.5                    DESTINATION ${PNG_MAN_DIR}/man5)
-  # Install pkg-config files
-  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc
-          DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
-  install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config
-          DESTINATION bin)
-  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc
-          DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
-  install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
-          DESTINATION bin)
-endif()
-
-# On versions of CMake that support it, create an export file CMake
-# users can include() to import our targets
-if(PNG_EXPORT_RULE AND NOT SKIP_INSTALL_EXPORT AND NOT SKIP_INSTALL_ALL )
-  install(EXPORT libpng DESTINATION lib/libpng FILE lib${PNG_LIB_NAME}.cmake)
-endif()
-
-# what's with libpng-$VER%.txt and all the extra files?
-
-
-# UNINSTALL
-# do we need this?
-
-
-# DIST
-# do we need this?
-
-# to create msvc import lib for mingw compiled shared lib
-# pexports libpng.dll > libpng.def
-# lib /def:libpng.def /machine:x86
-

INSTALL

@@ -1,5 +1,5 @@
 
-Installing libpng
+Installing libpng version 1.0.29rc2 - September 26, 2007
 
 On Unix/Linux and similar systems, you can simply type
 
@@ -13,16 +13,10 @@ If configure does not work on your system and you have a reasonably
 up-to-date set of tools, running ./autogen.sh before running ./configure
 may fix the problem.  You can also run the individual commands in
 autogen.sh with the --force option, if supported by your version of
-the tools.  To be really sure that you aren't using any of the included
+the tools.  If you run 'libtoolize --force', though, this will replace
-pre-built scripts, you can do this:
+the distributed, patched, version of ltmain.sh with an unpatched version
-
+and your shared library builds may fail to produce libraries with the
-    ./configure --enable-maintainer-mode
+correct version numbers.
-    make maintainer-clean
-    ./autogen.sh
-    ./configure [--prefix=/path] [other options]
-    make
-    make install
-    make check
 
 Instead, you can use one of the custom-built makefiles in the
 "scripts" directory
@@ -31,29 +25,27 @@ Instead, you can use one of the custom-built makefiles in the
     make test
     make install
 
-The files that are presently available in the scripts directory
-are listed and described in scripts/README.txt.
-
 Or you can use one of the "projects" in the "projects" directory.
 
+If you want to use "cmake" (see www.cmake.org), copy CMakeLists.txt
+from the "scripts" directory to this directory and type
+
+   cmake . [-DPNG_MMX=YES] -DCMAKE_INSTALL_PREFIX=/path
+   make
+   make install
+
 Before installing libpng, you must first install zlib, if it
 is not already on your system.  zlib can usually be found
 wherever you got libpng.  zlib can be placed in another directory,
 at the same level as libpng.
 
-If you want to use "cmake" (see www.cmake.org), type
-
-   cmake . -DCMAKE_INSTALL_PREFIX=/path
-   make
-   make install
-
 If your system already has a preinstalled zlib you will still need
 to have access to the zlib.h and zconf.h include files that
 correspond to the version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-x.y.z" or "libpngNN" and "zlib-1.2.5"
+might be called "libpng-1.0.29rc2" or "lpng109" and "zlib-1.2.1"
-or "zlib125") so that you have directories called "zlib" and "libpng".
+or "zlib121") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
 
@@ -63,25 +55,19 @@ Your directory structure should look like this:
           README
           *.h
           *.c
-          CMakeLists.txt    =>  "cmake" script
-          configuration files:
-             configure.ac, configure, Makefile.am, Makefile.in,
-             autogen.sh, config.guess, ltmain.sh, missing, libpng.pc.in,
-             libpng-config.in, aclocal.m4, config.h.in, config.sub,
-             depcomp, install-sh, mkinstalldirs, test-pngtest.sh
           contrib
              gregbook
-             pngminim
              pngminus
              pngsuite
              visupng
           projects
-             visualc71
+             beos
-             vstudio
+             c5builder (Borland)
+             visualc6 (msvc)
+             netware.txt
+             wince.txt
           scripts
              makefile.*
-             *.def (module definition files)
-             etc.
           pngtest.png
           etc.
       zlib
@@ -96,13 +82,80 @@ distribution of libpng.  It is available in both tar.gz (UNIX style line
 endings) and zip (DOS style line endings) formats.
 
 If you are building libpng with MSVC, you can enter the
-libpng projects\visualc6 or visualc71 directory and follow the instructions
+libpng projects\visualc6 directory and follow the instructions in
-in README.txt.
+projects\visualc6\README.txt.
 
-Otherwise enter the zlib directory and follow the instructions in zlib/README,
+You can build libpng for WindowsCE by downloading and installing
+the projects\wince directory as instructed in the projects\wince.txt file, and
+then following the instructions in the README* files.  Similarly, you can
+build libpng for Netware or Beos as instructed in projects\netware.txt
+or projects\beos.
+
+Else enter the zlib directory and follow the instructions in zlib/README,
 then come back here and run "configure" or choose the appropriate
 makefile.sys in the scripts directory.
 
+The files that are presently available in the scripts directory
+include
+
+ CMakeLists.txt    =>  "cmake" script
+ makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
+ makefile.elf      =>  Linux/ELF makefile symbol versioning,
+                       gcc, creates libpng10.so.0.1.0.29rc2)
+ makefile.linux    =>  Linux/ELF makefile
+                       (gcc, creates libpng10.so.0.1.0.29rc2)
+ makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
+ makefile.knr      =>  Archaic UNIX Makefile that converts files with
+                       ansi2knr (Requires ansi2knr.c from
+                       ftp://ftp.cs.wisc.edu/ghost)
+ makefile.aix      =>  AIX/gcc makefile
+ makefile.cygwin   =>  Cygwin/gcc makefile
+ makefile.darwin   =>  Darwin makefile, can use on MacosX
+ makefile.dec      =>  DEC Alpha UNIX makefile
+ makefile.freebsd  =>  FreeBSD makefile
+ makefile.hpgcc    =>  HPUX makefile using gcc
+ makefile.hpux     =>  HPUX (10.20 and 11.00) makefile
+ makefile.hp64     =>  HPUX (10.20 and 11.00) makefile, 64-bit
+ makefile.ibmc     =>  IBM C/C++ version 3.x for Win32 and OS/2 (static)
+ makefile.intel    =>  Intel C/C++ version 4.0 and later
+ libpng.icc        =>  Project file for IBM VisualAge/C++ version 4.0 or later
+ makefile.netbsd   =>  NetBSD/cc makefile, uses PNGGCCRD, makes libpng.so.
+ makefile.ne10bsd  =>  NetBSD/cc makefile, uses PNGGCCRD,
+                       makes libpng10.so
+ makefile.openbsd  =>  OpenBSD makefile
+ makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
+ makefile.sggcc    =>  Silicon Graphics (gcc,
+                       creates libpng10.so.0.1.0.29rc2)
+ makefile.sunos    =>  Sun makefile
+ makefile.solaris  =>  Solaris 2.X makefile (gcc,
+                       creates libpng10.so.0.1.0.29rc2)
+ makefile.solaris-x86 =>  Solaris/intelMMX 2.X makefile (gcc,
+                       creates libpng10.so.0.1.0.29rc2)
+ makefile.so9      =>  Solaris 9 makefile (gcc,
+                       creates libpng10.so.0.1.0.29rc2)
+ makefile.32sunu   =>  Sun Ultra 32-bit makefile
+ makefile.64sunu   =>  Sun Ultra 64-bit makefile
+ makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
+ makefile.mips     =>  MIPS makefile
+ makefile.acorn    =>  Acorn makefile
+ makefile.amiga    =>  Amiga makefile
+ smakefile.ppc     =>  AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
+                       (Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc)
+ makefile.atari    =>  Atari makefile
+ makefile.beos     =>  BEOS makefile for X86
+ makefile.bor      =>  Borland makefile (uses bcc)
+ makefile.bc32     =>  32-bit Borland C++ (all modules compiled in C mode)
+ makefile.tc3      =>  Turbo C 3.0 makefile
+ makefile.dj2      =>  DJGPP 2 makefile
+ makefile.msc      =>  Microsoft C makefile
+ makefile.vcwin32  =>  makefile for Microsoft Visual C++ 4.0 and later
+ makefile.os2      =>  OS/2 Makefile (gcc and emx, requires pngos2.def)
+ pngos2.def        =>  OS/2 module definition file used by makefile.os2
+ makefile.watcom   =>  Watcom 10a+ Makefile, 32-bit flat memory model
+ makevms.com       =>  VMS build script
+ descrip.mms       =>  VMS makefile for MMS or MMK
+ SCOPTIONS.ppc     =>  Used with smakefile.ppc
+
 Copy the file (or files) that you need from the
 scripts directory into this directory, for example
 
@@ -112,7 +165,7 @@ scripts directory into this directory, for example
 Read the makefile to see if you need to change any source or
 target directories to match your preferences.
 
-Then read pnglibconf.dfa to see if you want to make any configuration
+Then read pngconf.h to see if you want to make any configuration
 changes.
 
 Then just run "make" which will create the libpng library in
@@ -130,6 +183,37 @@ do that, run "make install" in the zlib directory first if necessary).
 Some also allow you to run "make test-installed" after you have
 run "make install".
 
-Further information can be found in the README and libpng-manual.txt
+If you encounter a compiler error message complaining about the
+lines
+      __png.h__ already includes setjmp.h;
+      __dont__ include it again.;
+This means you have compiled another module that includes setjmp.h,
+which is hazardous because the two modules might not include exactly
+the same setjmp.h.  If you are sure that you know what you are doing
+and that they are exactly the same, then you can comment out or
+delete the two lines.  Better yet, use the cexcept interface
+instead, as demonstrated in contrib/visupng of the libpng distribution.
+
+Further information can be found in the README and libpng.txt
 files, in the individual makefiles, in png.h, and the manual pages
 libpng.3 and png.5.
+
+
+Using the ./configure script -- 16 December 2002.
+=================================================
+
+
+The ./configure script should work compatibly with what scripts/makefile.*
+did, however there are some options you need to add to configure explicitly,
+which previously was done semi-automatically (if you didn't edit
+scripts/makefile.* yourself, that is)
+
+
+CFLAGS="-Wall -O -funroll-loops \
+-malign-loops=2 -malign-functions=2" ./configure --prefix=/usr/include \
+--with-pkgconfigdir=/usr/lib/pkgconfig --includedir=/usr/include
+
+You can alternatively specify --includedir=/usr/include, /usr/local/include,
+/usr/include/png12, or whatever.
+
+

KNOWNBUG

@@ -0,0 +1,22 @@
+
+Known bugs in libpng version 1.0.29rc2
+
+1. February 23, 2006: The custom makefiles don't build libpng with -lz.
+
+   STATUS: This is a subject of debate. The change will probably be made
+   as a part of a major overhaul of the makefiles in libpng version 1.3.0.
+
+2. February 24, 2006: The Makefile generated by the "configure" script
+   fails to install symbolic links
+   libpng12.so => libpng12.so.0.1.2.9betaN
+   that are generated by the custom makefiles.
+
+3. September 4, 2007:  There is a report that pngtest crashes on MacOS 10.
+
+   STATUS: workarounds are
+      1) Compile without optimization (crashes are observed with
+         -arch i386 and -O2 or -O3, using gcc-4.0.1.
+      2) Compile pngtest.c with PNG_DEBUG defined (the bug goes away if
+         you try to look at it).
+      3) Ignore the crash.  The library itself seems to be OK.
+

LICENSE

@@ -8,10 +8,8 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-This code is released under the libpng license.
+libpng versions 1.2.6, August 15, 2004, through 1.0.29rc2, September 26, 2007, are
-
+Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
-libpng versions 1.2.6, August 15, 2004, through 1.5.2, March 31, 2011, are
-Copyright (c) 2004, 2006-2011 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
 
@@ -108,4 +106,4 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-March 31, 2011
+September 26, 2007

Makefile.am

@@ -1,94 +1,92 @@
 # Makefile.am:
 #   Source file for Makefile.in (and hence Makefile)
 #
+# Makefile.am need only be changed on a major version number
+# change (e.g. libpng12 --> libpng13).  In that case seach
+# this file for every instance of the old base name (libpng12)
+# and change to the new one (libpng13), then change the
+# -version-number settings below so that the new values have
+# the correct major part (first field).
 
 PNGLIB_BASENAME= libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
 
 # libpng does not follow GNU file name conventions
-
-# "color-tests" requires automake 1.11.1 or later.  Enable it if you like,
-# to get red "FAIL" and green "PASS" notations during tests.
-# AUTOMAKE_OPTIONS = foreign color-tests
 AUTOMAKE_OPTIONS = foreign
 
 # test programs - run on make check, make distcheck
-check_PROGRAMS= pngtest pngvalid
+check_PROGRAMS= pngtest
 pngtest_SOURCES = pngtest.c
-pngtest_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
+pngtest_LDADD = libpng10.la
-pngvalid_SOURCES = pngvalid.c
+TESTS = test-pngtest.sh
-pngvalid_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
-TESTS = test-pngtest.sh test-pngvalid-simple.sh test-pngvalid-full.sh
 TESTS_ENVIRONMENT= srcdir=$(srcdir) 
 
 # man pages
 dist_man_MANS= libpng.3 libpngpf.3 png.5
 
 # generate the -config scripts if required
-binconfigs= libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config 
+binconfigs= libpng10-config 
-EXTRA_SCRIPTS= libpng-config libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config
+EXTRA_SCRIPTS= libpng-config libpng10-config
 bin_SCRIPTS= @binconfigs@
 
 # rules to build libpng, only build the old library on request
-lib_LTLIBRARIES=libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
+lib_LTLIBRARIES=libpng10.la @compatlib@
-# EXTRA_LTLIBRARIES= libpng.la
+EXTRA_LTLIBRARIES= libpng.la
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.c\
+libpng10_la_SOURCES = png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
-	pngget.c pngmem.c pngpread.c pngread.c pngrio.c pngrtran.c pngrutil.c\
+	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
-	pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c pngwutil.c\
+	pngwtran.c pngmem.c pngerror.c pngpread.c \
-	png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
+	png.h pngconf.h
+libpng_la_SOURCES = $(libpng10_la_SOURCES)
 
-nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
+libpng_la_CPPFLAGS = @LIBPNG_DEFINES@
+libpng10_la_CPPFLAGS = @LIBPNG_DEFINES@
 
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS = @LIBPNG_DEFINES@
+# MAJOR UPGRADE: the version-number settings below must be changed.
-
+libpng10_la_LDFLAGS = -no-undefined -export-dynamic \
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS = -no-undefined -export-dynamic \
+	-version-number 0:@PNGLIB_RELEASE@:0
-	-version-number @PNGLIB_MAJOR@@PNGLIB_MINOR@:@PNGLIB_RELEASE@:0
+# -rpath is needed as automake doesn't know the directory
+libpng_la_LDFLAGS = -rpath '$(libdir)' -no-undefined -export-dynamic \
+	-version-number 2:@PNGLIB_RELEASE@:0
 
 if HAVE_LD_VERSION_SCRIPT
   # Versioned symbols and restricted exports
-  libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS += -Wl,--version-script=libpng.vers
+  libpng10_la_LDFLAGS += -Wl,--version-script=libpng.vers
-  libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES = libpng.vers
+  libpng10_la_DEPENDENCIES = libpng.vers
 else
   # Only restricted exports when possible
-  libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS += -export-symbols libpng.sym
+  libpng10_la_LDFLAGS += -export-symbols libpng.sym
-  libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES = libpng.sym
+  libpng10_la_DEPENDENCIES = libpng.sym
 endif
+libpng_la_DEPENDENCIES = $(libpng10_la_DEPENDENCIES)
 
 #distribute headers in /usr/include/libpng/*
 pkgincludedir= $(includedir)/$(PNGLIB_BASENAME)
 pkginclude_HEADERS= png.h pngconf.h
-nodist_pkginclude_HEADERS= pnglibconf.h
 
 # pkg-config stuff, note that libpng.pc is always required in order
 # to get the correct library
 pkgconfigdir = @pkgconfigdir@
-pkgconfig_DATA = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc
+pkgconfig_DATA = libpng10.pc
 
 #extra source distribution files.
 EXTRA_DIST= \
-	ANNOUNCE CHANGES INSTALL LICENSE README TODO \
+	ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO \
 	pngtest.png pngbar.png pngnow.png pngbar.jpg autogen.sh \
-	${srcdir}/contrib ${srcdir}/projects ${srcdir}/scripts \
+	${srcdir}/projects/cbuilder5/* \
+	${srcdir}/projects/beos/* \
+	${srcdir}/projects/visualc6/* \
+	${srcdir}/projects/visualc71/* \
+	${srcdir}/projects/wince.txt \
+	${srcdir}/projects/netware.txt \
+	${srcdir}/scripts/* \
+	${srcdir}/contrib/gregbook/* \
+	${srcdir}/contrib/pngminus/* \
+	${srcdir}/contrib/pngsuite/* \
+	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	CMakeLists.txt example.c libpng-manual.txt
+	example.c libpng.txt pngvcrd.c 
 
-SCRIPT_CLEANFILES=scripts/*.out scripts/*.chk scripts/pnglibconf.dfn
+CLEANFILES= pngout.png libpng10.pc libpng10-config libpng.vers \
-
+libpng.sym
-CLEANFILES= dfn.c dfn?.out pngout.png libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc \
-	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config libpng.vers libpng.sym \
-	check.new pnglibconf.* symbols.new pngtest-log.txt \
-	$(SCRIPT_CLEANFILES)
-
-MAINTAINERCLEANFILES = Makefile.in aclocal.m4 config.guess config.h.in \
-config.sub configure depcomp install-sh ltmain.sh missing
-
-# DFNCPP is normally just CPP - the C preprocessor - but on Solaris and maybe
-# other operating systems (NeXT?) the C preprocessor selected by configure
-# checks input tokens for validity - effectively it performs part of the ANSI-C
-# parsing - and therefore fails with the .df files.  configure.ac has special
-# checks for this and sets DFNCPP appropriately.
-DFNCPP = @DFNCPP@
-
-SUFFIXES = .chk .dfn .out
 
 $(PNGLIB_BASENAME).pc: libpng.pc
 	cp libpng.pc $@
@@ -96,107 +94,38 @@ $(PNGLIB_BASENAME).pc: libpng.pc
 $(PNGLIB_BASENAME)-config: libpng-config
 	cp libpng-config $@
 
-scripts/sym.out scripts/vers.out: png.h pngconf.h pnglibconf.h
+libpng.sym: png.h pngconf.h
-scripts/symbols.out: png.h pngconf.h scripts/pnglibconf.h.prebuilt
+	rm -f $@ $@.new
+	$(CPP) @LIBPNG_DEFINES@ $(CPPFLAGS) -DPNG_BUILDSYMS $(srcdir)/png.h | \
+		$(SED) -n -e 's|^.*PNG_FUNCTION_EXPORT[ 	]*\([a-zA-Z0-9_]*\).*$$|\1|p' \
+			-e 's|^.*PNG_DATA_EXPORT[ 	]*\([a-zA-Z0-9_]*\).*$$|\1|p' \
+			>$@.new
+	mv $@.new $@
 
-libpng.sym: scripts/sym.out
+libpng.vers: libpng.sym
-	rm -f $@
+	rm -f $@ $@.new
-	cp $? $@
+	$(ECHO) PNG@PNGLIB_MAJOR@@PNGLIB_MINOR@_0 '{global:' > $@.new
-libpng.vers: scripts/vers.out
+	$(SED) s/$$/\;/ libpng.sym >> $@.new
-	rm -f $@
+	$(ECHO) 'local: *; };' >> $@.new
-	cp $? $@
+	mv $@.new $@
-pnglibconf.h: pnglibconf.out
-	rm -f $@
-	cp $? $@
-scripts/pnglibconf.h.prebuilt:
-	@echo "This is a machine generated file, but if you want to make" >&2
-	@echo "a new one simply make 'scripts/pnglibconf.out' and copy that" >&2
-	@exit 1
 
-# The following is necessary to ensure that the local pnglibconf.h is used, not
+test: check
-# an installed one (this can happen immediately after on a clean system if
-# 'make test' is the first thing the user does.)
-pngvalid.o pngtest.o: pnglibconf.h
-
-# We must use -DPNG_NO_USE_READ_MACROS here even when the library may actually
-# be built with PNG_USE_READ_MACROS; this stops the read macros interfering
-# with the symbol file format.
-SYMBOL_CFLAGS = -DPNGLIB_LIBNAME='PNG@PNGLIB_MAJOR@@PNGLIB_MINOR@_0'\
-		-DPNGLIB_VERSION='@PNGLIB_VERSION@'\
-		-DSYMBOL_PREFIX='$(SYMBOL_PREFIX)'\
-		-DPNG_NO_USE_READ_MACROS -DPNG_BUILDING_SYMBOL_TABLE
-
-.dfn.out:
-	rm -f $@ dfn.c dfn?.out
-	test -d scripts || mkdir scripts
-	echo '#include "$<"' >dfn.c
-	$(DFNCPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) @LIBPNG_DEFINES@\
-	    $(CPPFLAGS) $(SYMBOL_CFLAGS) dfn.c > dfn1.out
-	$(SED) -n -e 's|^.*PNG_DEFN_MAGIC-\(.*\)-PNG_DEFN_END.*$$|\1|p'\
-	    dfn1.out >dfn2.out
-	$(SED) -e 's| *@@@ *||g' -e 's| *$$||' dfn2.out >dfn3.out
-	rm -f dfn.c dfn[12].out
-	mv dfn3.out $@
-
-# The .dfn file for pnglibconf.h is machine generated
-pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk
-	rm -f $@ dfn?.out
-	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out\
-	    ${srcdir}/scripts/pnglibconf.dfa $(DFA_XTRA) 1>&2
-	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn2.out dfn1.out 1>&2
-	rm dfn1.out
-	mv dfn2.out $@
-
-# Symbol checks (.def and .out files should match)
-scripts/symbols.chk: scripts/checksym.awk scripts/symbols.def scripts/symbols.out
-.out.chk:
-	rm -f $@ symbols.new
-	$(AWK) -f ${srcdir}/scripts/checksym.awk ${srcdir}/scripts/${*F}.def\
-	    $< >&2
-	mv symbols.new $@
-
-# used on demand to regenerate the standard header, CPPFLAGS should
-# be empty - no non-standard defines
-scripts/pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk
-	rm -f $@ dfn?.out
-	test -z "$(CPPFLAGS)" 
-	echo "com @PNGLIB_VERSION@ STANDARD API DEFINITION" |\
-	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out\
-	    logunsupported=2 - ${srcdir}/scripts/pnglibconf.dfa 1>&2
-	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn2.out dfn1.out 1>&2
-	rm dfn1.out
-	mv dfn2.out $@
-
-$(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS): png.h pngconf.h \
-	pnglibconf.h pngpriv.h pngdebug.h pnginfo.h pngstruct.h
-
-test: check-am
-
-# Extra checks
-check: scripts/symbols.chk
-
-# Don't distribute the generated script files
-dist-hook:
-	cd '$(top_distdir)'; rm -f $(SCRIPT_CLEANFILES)
 
 # install the .../include headers as links to the new ones
 install-data-hook:
-	cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
+	cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h
 	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
-	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
+	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pngconf.h pngconf.h
-		pngconf.h
-	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
-		pnglibconf.h
 	cd $(DESTDIR)$(pkgconfigdir); rm -f libpng.pc
 	cd $(DESTDIR)$(pkgconfigdir); $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
 
-# do evil things to libpng to cause libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@ to be used
+# do evil things to libpng to cause libpng10 to be used
 install-exec-hook:
 	cd $(DESTDIR)$(bindir); rm -f libpng-config
 	cd $(DESTDIR)$(bindir); $(LN_S) $(PNGLIB_BASENAME)-config libpng-config
 	@set -x;\
 	cd $(DESTDIR)$(libdir);\
-	for ext in a la so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@ sl dylib dll.a; do\
+	for ext in a la so sl dylib; do\
 		rm -f libpng.$$ext;\
                 if test -f $(PNGLIB_BASENAME).$$ext; then\
                        $(LN_S) $(PNGLIB_BASENAME).$$ext libpng.$$ext;\
@@ -204,8 +133,13 @@ install-exec-hook:
 	done
 
 uninstall-hook:
-	cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
+	cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h
 	rm -f $(DESTDIR)$(pkgconfigdir)/libpng.pc
 	rm -f $(DESTDIR)$(bindir)/libpng-config
-	rm -f $(DESTDIR)$(libdir)/libpng.a
+	@if test -n "@compatlib@"; then\
-	rm -f $(DESTDIR)$(libdir)/libpng.la
+		set -x;\
+		cd $(DESTDIR)$(libdir);\
+		for ext in a la so sl dylib; do\
+			rm -f libpng.$$ext;\
+		done;\
+	fi

README

@@ -1,11 +1,11 @@
-README for libpng version 1.5.2 - March 31, 2011 (shared library 15.0)
+README for libpng version 1.0.29rc2 - September 26, 2007 (shared library 10.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
 
-Libpng comes in several distribution formats.  Get libpng-*.tar.gz,
+Libpng comes in several distribution formats.  Get libpng-*.tar.gz
-libpng-*.tar.xz or libpng-*.tar.bz2 if you want UNIX-style line endings
+or libpng-*.tar.bz2 if you want UNIX-style line endings in the text
-in the text files, or lpng*.zip if you want DOS-style line endings.
+files, or lpng*.zip if you want DOS-style line endings.
 
 Version 0.89 was the first official release of libpng.  Don't let the
 fact that it's the first release fool you.  The libpng library has been in
@@ -54,11 +54,11 @@ to set different actions based on whether the CRC error occurred in a
 critical or an ancillary chunk.
 
 The changes made to the library, and bugs fixed are based on discussions
-on the PNG-implement mailing list and not on material submitted
+on the PNG-implement mailing list
-privately to Guy, Andreas, or Glenn.  They will forward any good
+and not on material submitted privately to Guy, Andreas, or Glenn.  They will
-suggestions to the list.
+forward any good suggestions to the list.
 
-For a detailed description on using libpng, read libpng-manual.txt.  For
+For a detailed description on using libpng, read libpng.txt.  For
 examples of libpng in a program, see example.c and pngtest.c.  For usage
 information and restrictions (what little they are) on libpng, see
 png.h.  For a description on using zlib (the compression library used by
@@ -101,17 +101,16 @@ Finally, if you get any warning messages when compiling libpng
 fix.  Please mention "libpng" somewhere in the subject line.  Thanks.
 
 This release was created and will be supported by myself (of course
-based in a large way on Guy's and Andreas' earlier work), and the PNG
+based in a large way on Guy's and Andreas' earlier work), and the PNG group.
-development group.
 
-Send comments/corrections/commendations to png-mng-implement at
+Send comments/corrections/commendations to png-mng-implement at lists.sf.net
-lists.sourceforge.net (subscription required; visit 
+(subscription required; visit 
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
 to subscribe) or to glennrp at users.sourceforge.net
 
 You can't reach Guy, the original libpng author, at the addresses
-given in previous versions of this document.  He and Andreas will
+given in previous versions of this document.  He and Andreas will read mail
-read mail addressed to the png-implement list, however.
+addressed to the png-implement list, however.
 
 Please do not send general questions about PNG.  Send them to
 the (png-list at ccrc.wustl.edu, subscription required, write to
@@ -141,17 +140,14 @@ Files in this distribution:
       TODO          =>  Things not implemented in the current library
       Y2KINFO       =>  Statement of Y2K compliance
       example.c     =>  Example code for using libpng functions
-      libpng.3      =>  manual page for libpng (includes libpng-manual.txt)
+      libpng.3      =>  manual page for libpng (includes libpng.txt)
-      libpng-manual.txt  =>  Description of libpng and its functions
+      libpng.txt    =>  Description of libpng and its functions
       libpngpf.3    =>  manual page for libpng's private functions
       png.5         =>  manual page for the PNG format
       png.c         =>  Basic interface functions common to library
-      png.h         =>  Library function and interface declarations (public)
+      png.h         =>  Library function and interface declarations
-      pngpriv.h     =>  Library function and interface declarations (private)
+      pngconf.h     =>  System specific library configuration
-      pngconf.h     =>  System specific library configuration (public)
+      pngasmrd.h    =>  Header file for assembler-coded functions
-      pngstruct.h   =>  png_struct declaration (private)
-      pnginfo.h     =>  png_info struct declaration (private)
-      pngdebug.h    =>  debugging macros (private)
       pngerror.c    =>  Error/warning message I/O functions
       pngget.c      =>  Functions for retrieving info from struct
       pngmem.c      =>  Memory handling functions
@@ -178,22 +174,84 @@ Files in this distribution:
        pngminus     =>  Simple pnm2png and png2pnm programs
        pngsuite     =>  Test images
        visupng      =>  Contains a MSVC workspace for VisualPng
-      projects      =>  Contains project files and workspaces for
+      projects      =>  Contains project files and workspaces for building DLL
-                        building a DLL
+       beos             =>  Contains a Beos workspace for building libpng
-       cbuilder5        =>  Contains a Borland workspace for building
+       c5builder        =>  Contains a Borland workspace for building libpng
-                            libpng and zlib
+                            and zlib
-       visualc6         =>  Contains a Microsoft Visual C++ (MSVC)
+       visualc6         =>  Contains a Microsoft Visual C++ (MSVC) workspace
-                            workspace for building libpng and zlib
+                            for building libpng and zlib
-       visualc71        =>  Contains a Microsoft Visual C++ (MSVC)
+       netware.txt      =>  Contains instructions for downloading a set of
-                            workspace for building libpng and zlib
+                            project files for building libpng and zlib on
-       xcode            =>  Contains an Apple xcode
+                            Netware.
-                            workspace for building libpng and zlib
+       wince.txt        =>  Contains instructions for downloading a Microsoft
+                            Visual C++ (Windows CD Toolkit) workspace for
+                            building libpng and zlib on WindowsCE
       scripts       =>  Directory containing scripts for building libpng:
-                            (see scripts/README.txt for the list of scripts)
+       descrip.mms      =>  VMS makefile for MMS or MMK
+       makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
+       makefile.elf     =>  Linux/ELF makefile symbol versioning,
+                            gcc, creates libpng10.so.0.1.0.29rc2)
+       makefile.linux   =>  Linux/ELF makefile
+                            (gcc, creates libpng10.so.0.1.0.29rc2)
+       makefile.gcmmx   =>  Linux/ELF makefile
+                            (gcc, creates libpng10.so.0.1.0.29rc2,
+                            uses assembler code tuned for Intel MMX platform)
+       makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
+       makefile.knr     =>  Archaic UNIX Makefile that converts files with
+                            ansi2knr (Requires ansi2knr.c from
+                            ftp://ftp.cs.wisc.edu/ghost)
+       makefile.aix     =>  AIX makefile
+       makefile.cygwin  =>  Cygwin/gcc makefile
+       makefile.darwin  =>  Darwin makefile
+       makefile.dec     =>  DEC Alpha UNIX makefile
+       makefile.freebsd =>  FreeBSD makefile
+       makefile.hpgcc   =>  HPUX makefile using gcc
+       makefile.hpux    =>  HPUX (10.20 and 11.00) makefile
+       makefile.hp64    =>  HPUX (10.20 and 11.00) makefile, 64 bit
+       makefile.ibmc    =>  IBM C/C++ version 3.x for Win32 and OS/2 (static)
+       makefile.intel   =>  Intel C/C++ version 4.0 and later
+       libpng.icc       =>  Project file, IBM VisualAge/C++ 4.0 or later
+       makefile.netbsd  =>  NetBSD/cc makefile, PNGGCCRD, makes libpng.so.
+       makefile.ne10bsd  =>  NetBSD/cc makefile, PNGGCCRD, makes libpng10.so
+       makefile.openbsd =>  OpenBSD makefile
+       makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
+       makefile.sggcc   =>  Silicon Graphics
+                            (gcc, creates libpng10.so.0.1.0.29rc2)
+       makefile.sunos   =>  Sun makefile
+       makefile.solaris =>  Solaris 2.X makefile
+                            (gcc, creates libpng10.so.0.1.0.29rc2)
+       makefile.so9     =>  Solaris 9 makefile
+                            (gcc, creates libpng10.so.0.1.0.29rc2)
+       makefile.32sunu  =>  Sun Ultra 32-bit makefile
+       makefile.64sunu  =>  Sun Ultra 64-bit makefile
+       makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
+       makefile.mips    =>  MIPS makefile
+       makefile.acorn   =>  Acorn makefile
+       makefile.amiga   =>  Amiga makefile
+       smakefile.ppc    =>  AMIGA smakefile for SAS C V6.58/7.00 PPC
+                            compiler (Requires SCOPTIONS, copied from
+                            scripts/SCOPTIONS.ppc)
+       makefile.atari   =>  Atari makefile
+       makefile.beos    =>  BEOS makefile for X86
+       makefile.bor     =>  Borland makefile (uses bcc)
+       makefile.bc32    =>  32-bit Borland C++ (all modules compiled in C mode)
+       makefile.tc3     =>  Turbo C 3.0 makefile
+       makefile.dj2     =>  DJGPP 2 makefile
+       makefile.msc     =>  Microsoft C makefile
+       makefile.vcawin32=>  makefile for Microsoft Visual C++ 5.0 and
+                            later (uses assembler code tuned for Intel MMX
+                            platform)
+       makefile.vcwin32 =>  makefile for Microsoft Visual C++ 4.0 and
+                            later (does not use assembler code)
+       makefile.os2     =>  OS/2 Makefile (gcc and emx, requires pngos2.def)
+       pngos2.def       =>  OS/2 module definition file used by makefile.os2
+       makefile.watcom  =>  Watcom 10a+ Makefile, 32-bit flat memory model
+       makevms.com      =>  VMS build script
+       SCOPTIONS.ppc    =>  Used with smakefile.ppc
 
 Good luck, and happy coding.
 
--Glenn Randers-Pehrson (current maintainer, since 1998)
+-Glenn Randers-Pehrson (current maintainer)
  Internet: glennrp at users.sourceforge.net
 
 -Andreas Eric Dilger (former maintainer, 1996-1997)

TODO

@@ -1,11 +1,12 @@
-/*
 TODO - list of things to do for libpng:
 
 Final bug fixes.
+Improve API by hiding the png_struct and png_info structs.
+Finish work on the no-floating-point version (including gamma compensation)
 Better C++ wrapper/full C++ implementation?
 Fix problem with C++ and EXTERN "C".
 cHRM transformation.
-Remove setjmp/longjmp usage in favor of returning error codes.
+Improve setjmp/longjmp usage or remove it in favor of returning error codes.
 Add "grayscale->palette" transformation and "palette->grayscale" detection.
 Improved dithering.
 Multi-lingual error and warning message support.
@@ -16,12 +17,8 @@ Better filter selection
    (counting huffman bits/precompression?  filter inertia?  filter costs?).
 Histogram creation.
 Text conversion between different code pages (Latin-1 -> Mac and DOS).
-Avoid building gamma tables whenever possible.
+Should we always malloc 2^bit_depth PLTE/tRNS/hIST entries for safety?
+Build gamma tables using fixed point (and do away with floating point entirely).
 Use greater precision when changing to linear gamma for compositing against
   background and doing rgb-to-gray transformation.
 Investigate pre-incremented loop counters and other loop constructions.
-Add interpolated method of handling interlacing.
-Switch to the simpler zlib (zlib/libpng) license if legally possible.
-Extend pngvalid.c to validate more of the libpng transformations.
-
-*/

Y2KINFO

@@ -0,0 +1,55 @@
+   Y2K compliance in libpng:
+   =========================
+
+      September 26, 2007
+
+      Since the PNG Development group is an ad-hoc body, we can't make
+      an official declaration.
+
+      This is your unofficial assurance that libpng from version 0.71 and
+      upward through 1.0.29rc2 are Y2K compliant.  It is my belief that earlier
+      versions were also Y2K compliant.
+
+      Libpng only has three year fields.  One is a 2-byte unsigned integer
+      that will hold years up to 65535.  The other two hold the date in text
+      format, and will hold years up to 9999.
+
+      The integer is
+          "png_uint_16 year" in png_time_struct.
+
+      The strings are
+          "png_charp time_buffer" in png_struct and
+          "near_time_buffer", which is a local character string in png.c.
+
+      There are seven time-related functions:
+
+          png_convert_to_rfc_1123() in png.c
+            (formerly png_convert_to_rfc_1152() in error)
+          png_convert_from_struct_tm() in pngwrite.c, called in pngwrite.c
+          png_convert_from_time_t() in pngwrite.c
+          png_get_tIME() in pngget.c
+          png_handle_tIME() in pngrutil.c, called in pngread.c
+          png_set_tIME() in pngset.c
+          png_write_tIME() in pngwutil.c, called in pngwrite.c
+
+      All appear to handle dates properly in a Y2K environment.  The
+      png_convert_from_time_t() function calls gmtime() to convert from system
+      clock time, which returns (year - 1900), which we properly convert to
+      the full 4-digit year.  There is a possibility that applications using
+      libpng are not passing 4-digit years into the png_convert_to_rfc_1123()
+      function, or that they are incorrectly passing only a 2-digit year
+      instead of "year - 1900" into the png_convert_from_struct_tm() function,
+      but this is not under our control.  The libpng documentation has always
+      stated that it works with 4-digit years, and the APIs have been
+      documented as such.
+
+      The tIME chunk itself is also Y2K compliant.  It uses a 2-byte unsigned
+      integer to hold the year, and can hold years as large as 65535.
+
+      zlib, upon which libpng depends, is also Y2K compliant.  It contains
+      no date-related code.
+
+
+         Glenn Randers-Pehrson
+         libpng maintainer
+         PNG Development Group

autogen.sh

@@ -4,31 +4,22 @@
 #
 # WARNING: if you run this you will change the versions
 # of the tools which are used and, maybe, required!
-
+        touch Makefile.am configure.ac
-# You can define your own replacements in your environment.
-# $AUTOCONF,  $AUTOMAKE, $AUTOHEADER, $AUTOPOINT, $ACLOCAL and $LIBTOOLIZE
-
-touch Makefile.am configure.ac
 {
-   LT=${LIBTOOLIZE-libtoolize}
+	echo "running libtoolize" >&2
-   echo "running $LT" >&2
+	libtoolize --copy --automake
-   $LT --force --copy --automake
 } && {
-   AL=${ACLOCAL-aclocal}
+	echo "running aclocal" >&2
-   echo "running $AL" >&2
+	aclocal
-   $AL
 } && {
-   AH=${AUTOHEADER-autoheader}
+	echo "running autoheader [ignore the warnings]" >&2
-   echo "running $AH [ignore the warnings]" >&2
+	autoheader
-   $AH
 } && {
-   AM=${AUTOMAKE-automake}
+	echo "running automake" >&2
-   echo "running $AM" >&2
+	automake --foreign -a -c
-   $AM --force-missing --foreign -a -c
 } && {
-   AC=${AUTOCONF-autoconf}
+	echo "running autoconf" >&2
-   echo "running $AC" >&2
+	autoconf
-   $AC
 } &&
-   echo "autogen complete" >&2 ||
+	echo "autogen complete" >&2 ||
-   echo "ERROR: autogen.sh failed, autogen is incomplete" >&2
+	echo "ERROR: autogen.sh failed, autogen is incomplete" >&2

config.guess

@@ -1,10 +1,9 @@
 #! /bin/sh
 # Attempt to guess a canonical system name.
 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+#   2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
-#   Free Software Foundation, Inc.
 
-timestamp='2009-11-20'
+timestamp='2005-12-23'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -27,16 +26,16 @@ timestamp='2009-11-20'
 # the same distribution terms that you use for the rest of that program.
 
 
-# Originally written by Per Bothner.  Please send patches (context
+# Originally written by Per Bothner <per@bothner.com>.
-# diff format) to <config-patches@gnu.org> and include a ChangeLog
+# Please send patches to <config-patches@gnu.org>.  Submit a context
-# entry.
+# diff and a properly formatted ChangeLog entry.
 #
 # This script attempts to guess a canonical system name similar to
 # config.sub.  If it succeeds, it prints the system name on stdout, and
 # exits with 0.  Otherwise, it exits with 1.
 #
-# You can get the latest version of this script from:
+# The plan is that this can be called by configure scripts if you
-# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
+# don't specify an explicit build system type.
 
 me=`echo "$0" | sed -e 's,.*/,,'`
 
@@ -56,8 +55,8 @@ version="\
 GNU config.guess ($timestamp)
 
 Originally written by Per Bothner.
-Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
-2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -107,7 +106,7 @@ set_cc_for_build='
 trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ;
 trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ;
 : ${TMPDIR=/tmp} ;
- { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
+ { tmp=`(umask 077 && mktemp -d -q "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
  { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } ||
  { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } ||
  { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ;
@@ -139,6 +138,23 @@ UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
 UNAME_SYSTEM=`(uname -s) 2>/dev/null`  || UNAME_SYSTEM=unknown
 UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
 
+if [ "${UNAME_SYSTEM}" = "Linux" ] ; then
+	eval $set_cc_for_build
+	cat << EOF > $dummy.c
+	#include <features.h>
+	#ifdef __UCLIBC__
+	# ifdef __UCLIBC_CONFIG_VERSION__
+	LIBC=uclibc __UCLIBC_CONFIG_VERSION__
+	# else
+	LIBC=uclibc
+	# endif
+	#else
+	LIBC=gnu
+	#endif
+EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep LIBC= | sed -e 's: ::g'`
+fi
+
 # Note: order is significant - the case branches are not exclusive.
 
 case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
@@ -161,7 +177,6 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	    arm*) machine=arm-unknown ;;
 	    sh3el) machine=shl-unknown ;;
 	    sh3eb) machine=sh-unknown ;;
-	    sh5el) machine=sh5le-unknown ;;
 	    *) machine=${UNAME_MACHINE_ARCH}-unknown ;;
 	esac
 	# The Operating System including object format, if it has switched
@@ -170,7 +185,7 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
 		eval $set_cc_for_build
 		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
-			| grep -q __ELF__
+			| grep __ELF__ >/dev/null
 		then
 		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
 		    # Return netbsd for either.  FIX?
@@ -208,11 +223,8 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
     *:ekkoBSD:*:*)
 	echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE}
 	exit ;;
-    *:SolidBSD:*:*)
-	echo ${UNAME_MACHINE}-unknown-solidbsd${UNAME_RELEASE}
-	exit ;;
     macppc:MirBSD:*:*)
-	echo powerpc-unknown-mirbsd${UNAME_RELEASE}
+	echo powerppc-unknown-mirbsd${UNAME_RELEASE}
 	exit ;;
     *:MirBSD:*:*)
 	echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE}
@@ -324,33 +336,14 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	case `/usr/bin/uname -p` in
 	    sparc) echo sparc-icl-nx7; exit ;;
 	esac ;;
-    s390x:SunOS:*:*)
-	echo ${UNAME_MACHINE}-ibm-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
-	exit ;;
     sun4H:SunOS:5.*:*)
 	echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
 	exit ;;
     sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
 	echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
 	exit ;;
-    i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*)
+    i86pc:SunOS:5.*:*)
-	echo i386-pc-auroraux${UNAME_RELEASE}
+	echo i386-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
-	exit ;;
-    i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
-	eval $set_cc_for_build
-	SUN_ARCH="i386"
-	# If there is a compiler, see if it is configured for 64-bit objects.
-	# Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
-	# This test works for both compilers.
-	if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then
-	    if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
-		(CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
-		grep IS_64BIT_ARCH >/dev/null
-	    then
-		SUN_ARCH="x86_64"
-	    fi
-	fi
-	echo ${SUN_ARCH}-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
 	exit ;;
     sun4*:SunOS:6*:*)
 	# According to config.sub, this is the proper way to canonicalize
@@ -551,7 +544,7 @@ EOF
 		echo rs6000-ibm-aix3.2
 	fi
 	exit ;;
-    *:AIX:*:[456])
+    *:AIX:*:[45])
 	IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
 	if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
 		IBM_ARCH=rs6000
@@ -659,7 +652,7 @@ EOF
 	    # => hppa64-hp-hpux11.23
 
 	    if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) |
-		grep -q __LP64__
+		grep __LP64__ >/dev/null
 	    then
 		HP_ARCH="hppa2.0w"
 	    else
@@ -791,8 +784,6 @@ EOF
 	case ${UNAME_MACHINE} in
 	    pc98)
 		echo i386-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
-	    amd64)
-		echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
 	    *)
 		echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
 	esac
@@ -800,7 +791,7 @@ EOF
     i*:CYGWIN*:*)
 	echo ${UNAME_MACHINE}-pc-cygwin
 	exit ;;
-    *:MINGW*:*)
+    i*:MINGW*:*)
 	echo ${UNAME_MACHINE}-pc-mingw32
 	exit ;;
     i*:windows32*:*)
@@ -810,24 +801,12 @@ EOF
     i*:PW*:*)
 	echo ${UNAME_MACHINE}-pc-pw32
 	exit ;;
-    *:Interix*:*)
+    x86:Interix*:[345]*)
-    	case ${UNAME_MACHINE} in
+	echo i586-pc-interix${UNAME_RELEASE}|sed -e 's/\..*//'
-	    x86)
+	exit ;;
-		echo i586-pc-interix${UNAME_RELEASE}
-		exit ;;
-	    authenticamd | genuineintel | EM64T)
-		echo x86_64-unknown-interix${UNAME_RELEASE}
-		exit ;;
-	    IA64)
-		echo ia64-unknown-interix${UNAME_RELEASE}
-		exit ;;
-	esac ;;
     [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*)
 	echo i${UNAME_MACHINE}-pc-mks
 	exit ;;
-    8664:Windows_NT:*)
-	echo x86_64-pc-mks
-	exit ;;
     i*:Windows_NT*:* | Pentium*:Windows_NT*:*)
 	# How do we know it's Interix rather than the generic POSIX subsystem?
 	# It also conflicts with pre-2.0 versions of AT&T UWIN. Should we
@@ -857,6 +836,74 @@ EOF
     i*86:Minix:*:*)
 	echo ${UNAME_MACHINE}-pc-minix
 	exit ;;
+    arm*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    cris:Linux:*:*)
+	echo cris-axis-linux-${LIBC}
+	exit ;;
+    crisv32:Linux:*:*)
+	echo crisv32-axis-linux-${LIBC}
+	exit ;;
+    frv:Linux:*:*)
+    	echo frv-unknown-linux-${LIBC}
+	exit ;;
+    ia64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    m32r*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    m68*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    mips:Linux:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#undef CPU
+	#undef mips
+	#undef mipsel
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	CPU=mipsel
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	CPU=mips
+	#else
+	CPU=
+	#endif
+	#endif
+EOF
+	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '/^CPU/{s: ::g;p;}'`"
+	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-${LIBC}"; exit; }
+	;;
+    mips64:Linux:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#undef CPU
+	#undef mips64
+	#undef mips64el
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	CPU=mips64el
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	CPU=mips64
+	#else
+	CPU=
+	#endif
+	#endif
+EOF
+	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '/^CPU/{s: ::g;p;}'`"
+	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-${LIBC}"; exit; }
+	;;
+    or32:Linux:*:*)
+	echo or32-unknown-linux-${LIBC}
+	exit ;;
+    ppc:Linux:*:*)
+	echo powerpc-unknown-linux-${LIBC}
+	exit ;;
+    ppc64:Linux:*:*)
+	echo powerpc64-unknown-linux-${LIBC}
+	exit ;;
     alpha:Linux:*:*)
 	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
 	  EV5)   UNAME_MACHINE=alphaev5 ;;
@@ -867,115 +914,100 @@ EOF
 	  EV67)  UNAME_MACHINE=alphaev67 ;;
 	  EV68*) UNAME_MACHINE=alphaev68 ;;
         esac
-	objdump --private-headers /bin/sh | grep -q ld.so.1
+	objdump --private-headers /bin/sh | grep ld.so.1 >/dev/null
-	if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
+	if test "$?" = 0 ; then LIBC="gnulibc1" ; fi
-	echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
-	exit ;;
-    arm*:Linux:*:*)
-	eval $set_cc_for_build
-	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
-	    | grep -q __ARM_EABI__
-	then
-	    echo ${UNAME_MACHINE}-unknown-linux-gnu
-	else
-	    echo ${UNAME_MACHINE}-unknown-linux-gnueabi
-	fi
-	exit ;;
-    avr32*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    cris:Linux:*:*)
-	echo cris-axis-linux-gnu
-	exit ;;
-    crisv32:Linux:*:*)
-	echo crisv32-axis-linux-gnu
-	exit ;;
-    frv:Linux:*:*)
-    	echo frv-unknown-linux-gnu
-	exit ;;
-    i*86:Linux:*:*)
-	LIBC=gnu
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#ifdef __dietlibc__
-	LIBC=dietlibc
-	#endif
-EOF
-	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC'`
-	echo "${UNAME_MACHINE}-pc-linux-${LIBC}"
-	exit ;;
-    ia64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    m32r*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    m68*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    mips:Linux:*:* | mips64:Linux:*:*)
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#undef CPU
-	#undef ${UNAME_MACHINE}
-	#undef ${UNAME_MACHINE}el
-	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
-	CPU=${UNAME_MACHINE}el
-	#else
-	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
-	CPU=${UNAME_MACHINE}
-	#else
-	CPU=
-	#endif
-	#endif
-EOF
-	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'`
-	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
-	;;
-    or32:Linux:*:*)
-	echo or32-unknown-linux-gnu
-	exit ;;
-    padre:Linux:*:*)
-	echo sparc-unknown-linux-gnu
-	exit ;;
-    parisc64:Linux:*:* | hppa64:Linux:*:*)
-	echo hppa64-unknown-linux-gnu
 	exit ;;
     parisc:Linux:*:* | hppa:Linux:*:*)
 	# Look for CPU level
 	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
-	  PA7*) echo hppa1.1-unknown-linux-gnu ;;
+	  PA7*) echo hppa1.1-unknown-linux-${LIBC} ;;
-	  PA8*) echo hppa2.0-unknown-linux-gnu ;;
+	  PA8*) echo hppa2.0-unknown-linux-${LIBC} ;;
-	  *)    echo hppa-unknown-linux-gnu ;;
+	  *)    echo hppa-unknown-linux-${LIBC} ;;
 	esac
 	exit ;;
-    ppc64:Linux:*:*)
+    parisc64:Linux:*:* | hppa64:Linux:*:*)
-	echo powerpc64-unknown-linux-gnu
+	echo hppa64-unknown-linux-${LIBC}
-	exit ;;
-    ppc:Linux:*:*)
-	echo powerpc-unknown-linux-gnu
 	exit ;;
     s390:Linux:*:* | s390x:Linux:*:*)
 	echo ${UNAME_MACHINE}-ibm-linux
 	exit ;;
     sh64*:Linux:*:*)
-    	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     sh*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     sparc:Linux:*:* | sparc64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     vax:Linux:*:*)
-	echo ${UNAME_MACHINE}-dec-linux-gnu
+	echo ${UNAME_MACHINE}-dec-linux-${LIBC}
 	exit ;;
     x86_64:Linux:*:*)
-	echo x86_64-unknown-linux-gnu
+	echo x86_64-unknown-linux-${LIBC}
-	exit ;;
-    xtensa*:Linux:*:*)
-    	echo ${UNAME_MACHINE}-unknown-linux-gnu
 	exit ;;
+    i*86:Linux:*:*)
+	# The BFD linker knows what the default object file format is, so
+	# first see if it will tell us. cd to the root directory to prevent
+	# problems with other programs or directories called `ld' in the path.
+	# Set LC_ALL=C to ensure ld outputs messages in English.
+	ld_supported_targets=`cd /; LC_ALL=C ld --help 2>&1 \
+			 | sed -ne '/supported targets:/!d
+				    s/[ 	][ 	]*/ /g
+				    s/.*supported targets: *//
+				    s/ .*//
+				    p'`
+        case "$ld_supported_targets" in
+	  elf32-i386)
+		TENTATIVE="${UNAME_MACHINE}-pc-linux-${LIBC}"
+		;;
+	  a.out-i386-linux)
+		echo "${UNAME_MACHINE}-pc-linux-${LIBC}aout"
+		exit ;;
+	  coff-i386)
+		echo "${UNAME_MACHINE}-pc-linux-${LIBC}coff"
+		exit ;;
+	  "")
+		# Either a pre-BFD a.out linker (linux-gnuoldld) or
+		# one that does not give us useful --help.
+		echo "${UNAME_MACHINE}-pc-linux-${LIBC}oldld"
+		exit ;;
+	esac
+	# This should get integrated into the C code below, but now we hack
+	if [ "$LIBC" != "gnu" ] ; then echo "$TENTATIVE" && exit 0 ; fi
+	# Determine whether the default compiler is a.out or elf
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#include <features.h>
+	#ifdef __ELF__
+	# ifdef __GLIBC__
+	#  if __GLIBC__ >= 2
+	LIBC=gnu
+	#  else
+	LIBC=gnulibc1
+	#  endif
+	# else
+	LIBC=gnulibc1
+	# endif
+	#else
+	#if defined(__INTEL_COMPILER) || defined(__PGI)
+	LIBC=gnu
+	#else
+	LIBC=gnuaout
+	#endif
+	#endif
+	#ifdef __dietlibc__
+	LIBC=dietlibc
+	#endif
+EOF
+	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '/^LIBC/{s: ::g;p;}'`"
+	test x"${LIBC}" != x && {
+		echo "${UNAME_MACHINE}-pc-linux-${LIBC}"
+		exit
+	}
+	test x"${TENTATIVE}" != x && { echo "${TENTATIVE}"; exit; }
+	;;
     i*86:DYNIX/ptx:4*:*)
 	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
 	# earlier versions are messed up and put the nodename in both
@@ -1004,7 +1036,7 @@ EOF
     i*86:syllable:*:*)
 	echo ${UNAME_MACHINE}-pc-syllable
 	exit ;;
-    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*)
+    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.0*:*)
 	echo i386-unknown-lynxos${UNAME_RELEASE}
 	exit ;;
     i*86:*DOS:*:*)
@@ -1048,11 +1080,8 @@ EOF
     pc:*:*:*)
 	# Left here for compatibility:
         # uname -m prints for DJGPP always 'pc', but it prints nothing about
-        # the processor, so we play safe by assuming i586.
+        # the processor, so we play safe by assuming i386.
-	# Note: whatever this is, it MUST be the same as what config.sub
+	echo i386-pc-msdosdjgpp
-	# prints for the "djgpp" host, or else GDB configury will decide that
-	# this is a cross-build.
-	echo i586-pc-msdosdjgpp
         exit ;;
     Intel:Mach:3*:*)
 	echo i386-pc-mach3
@@ -1090,16 +1119,6 @@ EOF
     3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
         /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
           && { echo i486-ncr-sysv4; exit; } ;;
-    NCR*:*:4.2:* | MPRAS*:*:4.2:*)
-	OS_REL='.3'
-	test -r /etc/.relid \
-	    && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
-	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
-	    && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
-	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
-	    && { echo i586-ncr-sysv4.3${OS_REL}; exit; }
-	/bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \
-	    && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
     m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
 	echo m68k-unknown-lynxos${UNAME_RELEASE}
 	exit ;;
@@ -1112,7 +1131,7 @@ EOF
     rs6000:LynxOS:2.*:*)
 	echo rs6000-unknown-lynxos${UNAME_RELEASE}
 	exit ;;
-    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*)
+    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.0*:*)
 	echo powerpc-unknown-lynxos${UNAME_RELEASE}
 	exit ;;
     SM[BE]S:UNIX_SV:*:*)
@@ -1175,9 +1194,6 @@ EOF
     BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
 	echo i586-pc-beos
 	exit ;;
-    BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
-	echo i586-pc-haiku
-	exit ;;
     SX-4:SUPER-UX:*:*)
 	echo sx4-nec-superux${UNAME_RELEASE}
 	exit ;;
@@ -1187,15 +1203,6 @@ EOF
     SX-6:SUPER-UX:*:*)
 	echo sx6-nec-superux${UNAME_RELEASE}
 	exit ;;
-    SX-7:SUPER-UX:*:*)
-	echo sx7-nec-superux${UNAME_RELEASE}
-	exit ;;
-    SX-8:SUPER-UX:*:*)
-	echo sx8-nec-superux${UNAME_RELEASE}
-	exit ;;
-    SX-8R:SUPER-UX:*:*)
-	echo sx8r-nec-superux${UNAME_RELEASE}
-	exit ;;
     Power*:Rhapsody:*:*)
 	echo powerpc-apple-rhapsody${UNAME_RELEASE}
 	exit ;;
@@ -1205,16 +1212,6 @@ EOF
     *:Darwin:*:*)
 	UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
 	case $UNAME_PROCESSOR in
-	    i386)
-		eval $set_cc_for_build
-		if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then
-		  if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
-		      (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
-		      grep IS_64BIT_ARCH >/dev/null
-		  then
-		      UNAME_PROCESSOR="x86_64"
-		  fi
-		fi ;;
 	    unknown) UNAME_PROCESSOR=powerpc ;;
 	esac
 	echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
@@ -1296,9 +1293,6 @@ EOF
     i*86:rdos:*:*)
 	echo ${UNAME_MACHINE}-pc-rdos
 	exit ;;
-    i*86:AROS:*:*)
-	echo ${UNAME_MACHINE}-pc-aros
-	exit ;;
 esac
 
 #echo '(No uname command or uname output not recognized.)' 1>&2
@@ -1459,9 +1453,9 @@ This script, last modified $timestamp, has failed to recognize
 the operating system you are using. It is advised that you
 download the most up to date version of the config scripts from
 
-  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
+  http://savannah.gnu.org/cgi-bin/viewcvs/*checkout*/config/config/config.guess
 and
-  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
+  http://savannah.gnu.org/cgi-bin/viewcvs/*checkout*/config/config/config.sub
 
 If the version you run ($0) is already up to date, please
 send the following data and any information you think might be

config.h.in

@@ -45,10 +45,6 @@
 /* Define to 1 if you have the <unistd.h> header file. */
 #undef HAVE_UNISTD_H
 
-/* Define to the sub-directory in which libtool stores uninstalled libraries.
-   */
-#undef LT_OBJDIR
-
 /* Name of package */
 #undef PACKAGE
 
@@ -64,9 +60,6 @@
 /* Define to the one symbol short name of this package. */
 #undef PACKAGE_TARNAME
 
-/* Define to the home page for this package. */
-#undef PACKAGE_URL
-
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 

config.sub

@@ -1,10 +1,9 @@
 #! /bin/sh
 # Configuration validation subroutine script.
 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+#   2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
-#   Free Software Foundation, Inc.
 
-timestamp='2009-11-20'
+timestamp='2005-12-23'
 
 # This file is (in principle) common to ALL GNU software.
 # The presence of a machine in this file suggests that SOME GNU software
@@ -32,16 +31,13 @@ timestamp='2009-11-20'
 
 
 # Please send patches to <config-patches@gnu.org>.  Submit a context
-# diff and a properly formatted GNU ChangeLog entry.
+# diff and a properly formatted ChangeLog entry.
 #
 # Configuration subroutine to validate and canonicalize a configuration type.
 # Supply the specified configuration type as an argument.
 # If it is invalid, we print an error message on stderr and exit with code 1.
 # Otherwise, we print the canonical config type on stdout and succeed.
 
-# You can get the latest version of this script from:
-# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
-
 # This file is supposed to be the same for all GNU packages
 # and recognize all the CPU types, system types and aliases
 # that are meaningful with *any* GNU software.
@@ -75,8 +71,8 @@ Report bugs and patches to <config-patches@gnu.org>."
 version="\
 GNU config.sub ($timestamp)
 
-Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
-2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -125,7 +121,6 @@ maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
 case $maybe_os in
   nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \
   uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \
-  kopensolaris*-gnu* | \
   storm-chaos* | os2-emx* | rtmk-nova*)
     os=-$maybe_os
     basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
@@ -152,13 +147,10 @@ case $os in
 	-convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
 	-c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
 	-harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
-	-apple | -axis | -knuth | -cray | -microblaze)
+	-apple | -axis | -knuth | -cray)
 		os=
 		basic_machine=$1
 		;;
-        -bluegene*)
-	        os=-cnk
-		;;
 	-sim | -cisco | -oki | -wec | -winbond)
 		os=
 		basic_machine=$1
@@ -248,24 +240,20 @@ case $basic_machine in
 	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
 	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
 	| am33_2.0 \
-	| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \
+	| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr \
 	| bfin \
 	| c4x | clipper \
-	| d10v | d30v | dlx | dsp16xx \
+	| d10v | d30v | dlx | dsp16xx | dvp \
-	| fido | fr30 | frv \
+	| fr30 | frv \
 	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
 	| i370 | i860 | i960 | ia64 \
 	| ip2k | iq2000 \
-	| lm32 \
+	| m32r | m32rle | m68000 | m68k | m88k | maxq | mb | microblaze | mcore \
-	| m32c | m32r | m32rle | m68000 | m68k | m88k \
-	| maxq | mb | microblaze | mcore | mep | metag \
 	| mips | mipsbe | mipseb | mipsel | mipsle \
 	| mips16 \
 	| mips64 | mips64el \
-	| mips64octeon | mips64octeonel \
-	| mips64orion | mips64orionel \
-	| mips64r5900 | mips64r5900el \
 	| mips64vr | mips64vrel \
+	| mips64orion | mips64orionel \
 	| mips64vr4100 | mips64vr4100el \
 	| mips64vr4300 | mips64vr4300el \
 	| mips64vr5000 | mips64vr5000el \
@@ -278,31 +266,29 @@ case $basic_machine in
 	| mipsisa64sr71k | mipsisa64sr71kel \
 	| mipstx39 | mipstx39el \
 	| mn10200 | mn10300 \
-	| moxie \
 	| mt \
 	| msp430 \
-	| nios | nios2 \
 	| ns16k | ns32k \
 	| or32 \
 	| pdp10 | pdp11 | pj | pjl \
 	| powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
 	| pyramid \
-	| rx \
+	| sh | sh[1234] | sh[24]a | sh[24]a*eb | sh[23]e | sh[34]eb | shbe | shle | sh[1234]le | sh3ele \
-	| score \
-	| sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
 	| sh64 | sh64le \
-	| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
+	| sparc | sparc64 | sparc64b | sparc86x | sparclet | sparclite \
-	| sparcv8 | sparcv9 | sparcv9b | sparcv9v \
+	| sparcv8 | sparcv9 | sparcv9b \
-	| spu | strongarm \
+	| strongarm \
 	| tahoe | thumb | tic4x | tic80 | tron \
-	| ubicom32 \
 	| v850 | v850e \
 	| we32k \
-	| x86 | xc16x | xscale | xscalee[bl] | xstormy16 | xtensa \
+	| x86 | xscale | xscalee[bl] | xstormy16 | xtensa \
-	| z8k | z80)
+	| z8k)
 		basic_machine=$basic_machine-unknown
 		;;
-	m6811 | m68hc11 | m6812 | m68hc12 | picochip)
+	m32c)
+		basic_machine=$basic_machine-unknown
+		;;
+	m6811 | m68hc11 | m6812 | m68hc12)
 		# Motorola 68HC11/12.
 		basic_machine=$basic_machine-unknown
 		os=-none
@@ -312,6 +298,10 @@ case $basic_machine in
 	ms1)
 		basic_machine=mt-unknown
 		;;
+	nios2 | nios2-* | nios2 | nios2-*)
+		basic_machine=nios2-altera
+		os=-none
+		;;
 
 	# We use `pc' rather than `unknown'
 	# because (1) that's what they normally are, and
@@ -331,28 +321,25 @@ case $basic_machine in
 	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
 	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
 	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
-	| avr-* | avr32-* \
+	| avr-* \
 	| bfin-* | bs2000-* \
 	| c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \
 	| clipper-* | craynv-* | cydra-* \
 	| d10v-* | d30v-* | dlx-* \
 	| elxsi-* \
-	| f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
+	| f30[01]-* | f700-* | fr30-* | frv-* | fx80-* \
 	| h8300-* | h8500-* \
 	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
 	| i*86-* | i860-* | i960-* | ia64-* \
 	| ip2k-* | iq2000-* \
-	| lm32-* \
+	| m32r-* | m32rle-* \
-	| m32c-* | m32r-* | m32rle-* \
 	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
-	| m88110-* | m88k-* | maxq-* | mcore-* | metag-* | microblaze-* \
+	| m88110-* | m88k-* | maxq-* | mcore-* \
 	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
 	| mips16-* \
 	| mips64-* | mips64el-* \
-	| mips64octeon-* | mips64octeonel-* \
-	| mips64orion-* | mips64orionel-* \
-	| mips64r5900-* | mips64r5900el-* \
 	| mips64vr-* | mips64vrel-* \
+	| mips64orion-* | mips64orionel-* \
 	| mips64vr4100-* | mips64vr4100el-* \
 	| mips64vr4300-* | mips64vr4300el-* \
 	| mips64vr5000-* | mips64vr5000el-* \
@@ -367,32 +354,28 @@ case $basic_machine in
 	| mmix-* \
 	| mt-* \
 	| msp430-* \
-	| nios-* | nios2-* \
 	| none-* | np1-* | ns16k-* | ns32k-* \
 	| orion-* \
 	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
 	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
 	| pyramid-* \
-	| romp-* | rs6000-* | rx-* \
+	| romp-* | rs6000-* \
-	| sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
+	| sh-* | sh[1234]-* | sh[24]a-* | sh[23]e-* | sh[34]eb-* | shbe-* \
 	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
-	| sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
+	| sparc-* | sparc64-* | sparc64b-* | sparc86x-* | sparclet-* \
 	| sparclite-* \
-	| sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | strongarm-* | sv1-* | sx?-* \
+	| sparcv8-* | sparcv9-* | sparcv9b-* | strongarm-* | sv1-* | sx?-* \
 	| tahoe-* | thumb-* \
-	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* | tile-* \
+	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
 	| tron-* \
-	| ubicom32-* \
 	| v850-* | v850e-* | vax-* \
 	| we32k-* \
-	| x86-* | x86_64-* | xc16x-* | xps100-* | xscale-* | xscalee[bl]-* \
+	| x86-* | x86_64-* | xps100-* | xscale-* | xscalee[bl]-* \
-	| xstormy16-* | xtensa*-* \
+	| xstormy16-* | xtensa-* \
 	| ymp-* \
-	| z8k-* | z80-*)
+	| z8k-*)
 		;;
-	# Recognize the basic CPU types without company name, with glob match.
+	m32c-*)
-	xtensa*)
-		basic_machine=$basic_machine-unknown
 		;;
 	# Recognize the various machine names and aliases which stand
 	# for a CPU type and a company and sometimes even an OS.
@@ -456,10 +439,6 @@ case $basic_machine in
 		basic_machine=m68k-apollo
 		os=-bsd
 		;;
-	aros)
-		basic_machine=i386-pc
-		os=-aros
-		;;
 	aux)
 		basic_machine=m68k-apple
 		os=-aux
@@ -468,26 +447,10 @@ case $basic_machine in
 		basic_machine=ns32k-sequent
 		os=-dynix
 		;;
-	blackfin)
-		basic_machine=bfin-unknown
-		os=-linux
-		;;
-	blackfin-*)
-		basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'`
-		os=-linux
-		;;
-	bluegene*)
-		basic_machine=powerpc-ibm
-		os=-cnk
-		;;
 	c90)
 		basic_machine=c90-cray
 		os=-unicos
 		;;
-        cegcc)
-		basic_machine=arm-unknown
-		os=-cegcc
-		;;
 	convex-c1)
 		basic_machine=c1-convex
 		os=-bsd
@@ -516,8 +479,8 @@ case $basic_machine in
 		basic_machine=craynv-cray
 		os=-unicosmp
 		;;
-	cr16)
+	cr16c)
-		basic_machine=cr16-unknown
+		basic_machine=cr16c-unknown
 		os=-elf
 		;;
 	crds | unos)
@@ -555,10 +518,6 @@ case $basic_machine in
 		basic_machine=m88k-motorola
 		os=-sysv3
 		;;
-	dicos)
-		basic_machine=i686-pc
-		os=-dicos
-		;;
 	djgpp)
 		basic_machine=i586-pc
 		os=-msdosdjgpp
@@ -713,14 +672,6 @@ case $basic_machine in
 		basic_machine=m68k-isi
 		os=-sysv
 		;;
-	m68knommu)
-		basic_machine=m68k-unknown
-		os=-linux
-		;;
-	m68knommu-*)
-		basic_machine=m68k-`echo $basic_machine | sed 's/^[^-]*-//'`
-		os=-linux
-		;;
 	m88k-omron*)
 		basic_machine=m88k-omron
 		;;
@@ -732,17 +683,10 @@ case $basic_machine in
 		basic_machine=ns32k-utek
 		os=-sysv
 		;;
-        microblaze)
-		basic_machine=microblaze-xilinx
-		;;
 	mingw32)
 		basic_machine=i386-pc
 		os=-mingw32
 		;;
-	mingw32ce)
-		basic_machine=arm-unknown
-		os=-mingw32ce
-		;;
 	miniframe)
 		basic_machine=m68000-convergent
 		;;
@@ -750,6 +694,24 @@ case $basic_machine in
 		basic_machine=m68k-atari
 		os=-mint
 		;;
+	mipsEE* | ee | ps2)
+		basic_machine=mips64r5900el-scei
+		case $os in
+		    -linux*)
+			;;
+		    *)
+			os=-elf
+			;;
+		esac
+		;;
+	iop)
+		basic_machine=mipsel-scei
+		os=-irx
+		;;
+	dvp)
+		basic_machine=dvp-scei
+		os=-elf
+		;;
 	mips3*-*)
 		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
 		;;
@@ -869,14 +831,6 @@ case $basic_machine in
 		basic_machine=i860-intel
 		os=-osf
 		;;
-	parisc)
-		basic_machine=hppa-unknown
-		os=-linux
-		;;
-	parisc-*)
-		basic_machine=hppa-`echo $basic_machine | sed 's/^[^-]*-//'`
-		os=-linux
-		;;
 	pbd)
 		basic_machine=sparc-tti
 		;;
@@ -978,10 +932,6 @@ case $basic_machine in
 	sb1el)
 		basic_machine=mipsisa64sb1el-unknown
 		;;
-	sde)
-		basic_machine=mipsisa32-sde
-		os=-elf
-		;;
 	sei)
 		basic_machine=mips-sei
 		os=-seiux
@@ -993,9 +943,6 @@ case $basic_machine in
 		basic_machine=sh-hitachi
 		os=-hms
 		;;
-	sh5el)
-		basic_machine=sh5le-unknown
-		;;
 	sh64)
 		basic_machine=sh64-unknown
 		;;
@@ -1085,10 +1032,6 @@ case $basic_machine in
 		basic_machine=tic6x-unknown
 		os=-coff
 		;;
-	tile*)
-		basic_machine=tile-unknown
-		os=-linux-gnu
-		;;
 	tx39)
 		basic_machine=mipstx39-unknown
 		;;
@@ -1164,10 +1107,6 @@ case $basic_machine in
 		basic_machine=z8k-unknown
 		os=-sim
 		;;
-	z80-*-coff)
-		basic_machine=z80-unknown
-		os=-sim
-		;;
 	none)
 		basic_machine=none-none
 		os=-none
@@ -1206,10 +1145,10 @@ case $basic_machine in
 	we32k)
 		basic_machine=we32k-att
 		;;
-	sh[1234] | sh[24]a | sh[24]aeb | sh[34]eb | sh[1234]le | sh[23]ele)
+	sh[1234] | sh[24]a | sh[34]eb | sh[1234]le | sh[23]ele)
 		basic_machine=sh-unknown
 		;;
-	sparc | sparcv8 | sparcv9 | sparcv9b | sparcv9v)
+	sparc | sparcv8 | sparcv9 | sparcv9b)
 		basic_machine=sparc-sun
 		;;
 	cydra)
@@ -1256,9 +1195,6 @@ case $os in
         # First match some system type aliases
         # that might get confused with valid system types.
 	# -solaris* is a basic system type, with this one exception.
-        -auroraux)
-	        os=-auroraux
-		;;
 	-solaris1 | -solaris1.*)
 		os=`echo $os | sed -e 's|solaris1|sunos4|'`
 		;;
@@ -1279,20 +1215,18 @@ case $os in
 	# Each alternative MUST END IN A *, to match a version number.
 	# -sysv* is not here because it comes later, after sysvr4.
 	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
-	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -cnk* | -sunos | -sunos[34]*\
+	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -sunos | -sunos[34]*\
-	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -auroraux* | -solaris* \
+	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -solaris* | -sym* \
-	      | -sym* | -kopensolaris* \
 	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
-	      | -aos* | -aros* \
+	      | -aos* \
 	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
 	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
-	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
+	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* | -openbsd* \
-	      | -openbsd* | -solidbsd* \
 	      | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
 	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
 	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
 	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
-	      | -chorusos* | -chorusrdb* | -cegcc* \
+	      | -chorusos* | -chorusrdb* \
 	      | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
 	      | -mingw32* | -linux-gnu* | -linux-newlib* | -linux-uclibc* \
 	      | -uxpv* | -beos* | -mpeix* | -udk* \
@@ -1302,7 +1236,7 @@ case $os in
 	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
 	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
 	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
-	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es*)
+	      | -skyos* | -haiku* | -rdos* | -irx*)
 	# Remember, each alternative MUST END IN *, to match a version number.
 		;;
 	-qnx*)
@@ -1432,9 +1366,6 @@ case $os in
 	-zvmoe)
 		os=-zvmoe
 		;;
-	-dicos*)
-		os=-dicos
-		;;
 	-none)
 		;;
 	*)
@@ -1457,12 +1388,6 @@ else
 # system, and we'll never get to this point.
 
 case $basic_machine in
-        score-*)
-		os=-elf
-		;;
-        spu-*)
-		os=-elf
-		;;
 	*-acorn)
 		os=-riscix1.2
 		;;
@@ -1472,9 +1397,9 @@ case $basic_machine in
 	arm*-semi)
 		os=-aout
 		;;
-        c4x-* | tic4x-*)
+    c4x-* | tic4x-*)
-        	os=-coff
+        os=-coff
-		;;
+        ;;
 	# This must come before the *-dec entry.
 	pdp10-*)
 		os=-tops20
@@ -1500,9 +1425,6 @@ case $basic_machine in
 	m68*-cisco)
 		os=-aout
 		;;
-        mep-*)
-		os=-elf
-		;;
 	mips*-cisco)
 		os=-elf
 		;;
@@ -1632,7 +1554,7 @@ case $basic_machine in
 			-sunos*)
 				vendor=sun
 				;;
-			-cnk*|-aix*)
+			-aix*)
 				vendor=ibm
 				;;
 			-beos*)

configure.ac

@@ -18,15 +18,15 @@ AC_PREREQ(2.59)
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.5.2], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.0.29rc2], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.5.2
+PNGLIB_VERSION=1.0.29rc2
 PNGLIB_MAJOR=1
-PNGLIB_MINOR=5
+PNGLIB_MINOR=0
-PNGLIB_RELEASE=2
+PNGLIB_RELEASE=29
 
 dnl End of version number stuff
 
@@ -34,38 +34,14 @@ AC_CONFIG_SRCDIR([pngget.c])
 AM_CONFIG_HEADER(config.h)
 
 # Checks for programs.
-AC_LANG([C])
 AC_PROG_CC
 AC_PROG_LD
 AC_PROG_CPP
 AC_CHECK_TOOL(SED, sed, :)
-AC_CHECK_TOOL(AWK, awk, :)
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_MAKE_SET
-LT_INIT([win32-dll])
+AC_PROG_LIBTOOL
-
-# On Solaris 10 and 12 CPP gets set to cc -E, however this still
-# does some input parsing.  We need strict ANSI-C style tokenization,
-# check this:
-AC_REQUIRE_CPP
-AC_MSG_CHECKING([for a C preprocessor that does not parse its input])
-AC_TRY_CPP([1.5.0 16BIT],
-   [DFNCPP="$CPP"],
-   [DFNCPP=""
-   sav_CPP="$CPP"
-   for CPP in "${CC-cc} -E" "${CC-cc} -E -traditional-cpp" "/lib/cpp" "cpp"; do
-      AC_TRY_CPP([1.5.0 16BIT],
-         [DFNCPP="$CPP"]
-         [break],,)
-   done
-   CPP="$sav_CPP"])
-if test -n "$DFNCPP"; then
-   AC_MSG_RESULT([$DFNCPP])
-   AC_SUBST(DFNCPP)
-else
-   AC_MSG_FAILURE([not found], 1)
-fi
 
 # Checks for header files.
 AC_HEADER_STDC
@@ -80,30 +56,23 @@ AC_STRUCT_TM
 AC_FUNC_STRTOD
 AC_CHECK_FUNCS([memset], , AC_ERROR([memset not found in libc]))
 AC_CHECK_FUNCS([pow], , AC_CHECK_LIB(m, pow, , AC_ERROR([cannot find pow])) )
-AC_ARG_WITH(zlib-prefix,
+AC_CHECK_LIB(z, zlibVersion, , AC_ERROR([zlib not installed]))
-   AC_HELP_STRING([--with-zlib-prefix],
-                  [prefix that may have been used in installed zlib]),
-                  [ZPREFIX=${withval}],
-                  [ZPREFIX='z_'])
-AC_CHECK_LIB(z, zlibVersion, ,
-    AC_CHECK_LIB(z, ${ZPREFIX}zlibVersion, ,
-                 AC_ERROR([zlib not installed])))
-
 
 LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG
-LIBPNG_DEFINES=$LIBPNG_DEFINES
+AC_MSG_CHECKING(
+  [if assembler code in pnggccrd.c can be compiled without PNG_NO_MMX_CODE])
+AC_TRY_COMPILE(
+  [#include "$srcdir/pnggccrd.c"],
+  [return 0;],
+  AC_MSG_RESULT(yes)
+  LIBPNG_NO_MMX="",
+  AC_MSG_RESULT(no)
+  LIBPNG_NO_MMX=-DPNG_NO_MMX_CODE)
+LIBPNG_DEFINES=$LIBPNG_DEFINES\ $LIBPNG_NO_MMX
 AC_SUBST(LIBPNG_DEFINES)
+AC_SUBST(LIBPNG_NO_MMX)
 
 AC_MSG_CHECKING([if libraries can be versioned])
-# Special case for PE/COFF platforms: ld reports
-# support for version-script, but doesn't actually
-# DO anything with it.
-case $host in
-*cygwin* | *mingw32* | *interix* )
-    have_ld_version_script=no
-    AC_MSG_RESULT(no)
-;;
-* )
 GLD=`$LD --help < /dev/null 2>/dev/null | grep version-script`
 if test "$GLD"; then
     have_ld_version_script=yes
@@ -113,21 +82,8 @@ else
     AC_MSG_RESULT(no)
     AC_MSG_WARN(*** You have not enabled versioned symbols.)
 fi
-;;
-esac
-
 AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")
 
-if test "$have_ld_version_script" = "yes"; then
-    AC_MSG_CHECKING([for symbol prefix])
-    SYMBOL_PREFIX=`echo "PREFIX=__USER_LABEL_PREFIX__" \
-                   | ${CPP-${CC-gcc} -E} - 2>&1 \
-                   | ${EGREP-grep} "^PREFIX=" \
-                   | ${SED-sed} "s:^PREFIX=::"`
-    AC_SUBST(SYMBOL_PREFIX)
-    AC_MSG_RESULT($SYMBOL_PREFIX)
-fi
-
 # Substitutions for .in files
 AC_SUBST(PNGLIB_VERSION)
 AC_SUBST(PNGLIB_MAJOR)
@@ -159,9 +115,23 @@ AC_ARG_WITH(binconfigs,
 	[binconfigs='${binconfigs}'])
 AC_SUBST([binconfigs])
 
+# Allow the old version number library, libpng.so, to be removed from
+# the build
+AC_ARG_WITH(libpng-compat,
+	AC_HELP_STRING([--with-libpng-compat],
+		[Generate the obsolete libpng.so library @<:@default=yes@:>@]),
+	[if test "${withval}" = no; then
+		compatlib=
+		AC_MSG_NOTICE([libpng.so will not be built])
+	else
+		compatlib=libpng.la
+	fi],
+	[compatlib=libpng.la])
+AC_SUBST([compatlib])
+
 # Config files, substituting as above
-AC_CONFIG_FILES([Makefile libpng.pc:libpng.pc.in])
+AC_CONFIG_FILES([Makefile libpng.pc:scripts/libpng.pc-configure.in])
-AC_CONFIG_FILES([libpng-config:libpng-config.in],
+AC_CONFIG_FILES([libpng-config:scripts/libpng-config.in],
 		[chmod +x libpng-config])
 
 AC_OUTPUT

contrib/gregbook/COPYING

@@ -1,12 +1,12 @@
-                    GNU GENERAL PUBLIC LICENSE
+		    GNU GENERAL PUBLIC LICENSE
-                       Version 2, June 1991
+		       Version 2, June 1991
 
  Copyright (C) 1989, 1991 Free Software Foundation, Inc.
      59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
-                            Preamble
+			    Preamble
 
   The licenses for most software are designed to take away your
 freedom to share and change it.  By contrast, the GNU General Public
@@ -56,7 +56,7 @@ patent must be licensed for everyone's free use or not licensed at all.
   The precise terms and conditions for copying, distribution and
 modification follow.
 
-                    GNU GENERAL PUBLIC LICENSE
+		    GNU GENERAL PUBLIC LICENSE
    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 
   0. This License applies to any program or other work which contains
@@ -255,7 +255,7 @@ make exceptions for this.  Our decision will be guided by the two goals
 of preserving the free status of all derivatives of our free software and
 of promoting the sharing and reuse of software generally.
 
-                            NO WARRANTY
+			    NO WARRANTY
 
   11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
@@ -277,9 +277,9 @@ YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGES.
 
-                     END OF TERMS AND CONDITIONS
+		     END OF TERMS AND CONDITIONS
 
-            How to Apply These Terms to Your New Programs
+	    How to Apply These Terms to Your New Programs
 
   If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it

contrib/gregbook/LICENSE

@@ -1,6 +1,6 @@
   ---------------------------------------------------------------------------
 
-      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
 
       This software is provided "as is," without warranty of any kind,
       express or implied.  In no event shall the author or contributors

contrib/gregbook/Makefile.sgi

@@ -23,9 +23,9 @@
 
 # macros --------------------------------------------------------------------
 
-PNGINC = -I/usr/local/include/libpng15
+PNGINC = -I/usr/local/include/libpng12
-PNGLIB = -L/usr/local/lib -lpng15	  # dynamically linked against libpng
+PNGLIB = -L/usr/local/lib -lpng12	  # dynamically linked against libpng
-#PNGLIB = /usr/local/lib/libpng15.a # statically linked against libpng
+#PNGLIB = /usr/local/lib/libpng12.a # statically linked against libpng
 # or:
 #PNGINC = -I../..
 #PNGLIB = -L../.. -lpng

contrib/gregbook/Makefile.unx

@@ -26,14 +26,14 @@
 # macros --------------------------------------------------------------------
 
 #PNGDIR = /usr/local/lib
-#PNGINC = -I/usr/local/include/libpng15
+#PNGINC = -I/usr/local/include/libpng12
-#PNGLIBd = -L$(PNGDIR) -lpng15 # dynamically linked, installed libpng
+#PNGLIBd = -L$(PNGDIR) -lpng12 # dynamically linked, installed libpng
-#PNGLIBs = $(PNGDIR)/libpng15.a # statically linked, installed libpng
+#PNGLIBs = $(PNGDIR)/libpng12.a # statically linked, installed libpng
 # or:
 PNGDIR = ../..#	this one is for libpng-x.y.z/contrib/gregbook builds
 #PNGDIR = ../libpng
 PNGINC = -I$(PNGDIR)
-PNGLIBd = -Wl,-rpath,$(PNGDIR) -L$(PNGDIR) -lpng15	# dynamically linked
+PNGLIBd = -Wl,-rpath,$(PNGDIR) -L$(PNGDIR) -lpng12	# dynamically linked
 PNGLIBs = $(PNGDIR)/libpng.a		# statically linked, local libpng
 
 ZDIR = /usr/local/lib

contrib/gregbook/README

@@ -56,16 +56,16 @@ mation and links to the latest version of the source code, and Chapters
 
 Greg Roelofs
 http://pobox.com/~newt/greg_contact.html
-16 March 2008
+2 June 2007
 
 
 BUILD INSTRUCTIONS
 
  - Prerequisites (in order of compilation):
 
-      - zlib            http://zlib.net/
+      - zlib		http://zlib.net/
-      - libpng          http://www.libpng.org/pub/png/libpng.html
+      - libpng		http://www.libpng.org/pub/png/libpng.html
-      - pngbook         http://www.libpng.org/pub/png/book/sources.html
+      - pngbook		http://www.libpng.org/pub/png/book/sources.html
 
      The pngbook demo programs are explicitly designed to demonstrate proper
      coding techniques for using the libpng reference library.  As a result,
@@ -165,19 +165,19 @@ RUNNING THE PROGRAMS:  (VERY) BRIEF INTRO
      rpng is a simple PNG viewer that can display transparent PNGs with a
      specified background color; for example,
 
-        rpng -bgcolor \#ff0000 toucan.png
+	rpng -bgcolor #ff0000 toucan.png
 
      would display the image with a red background.  rpng2 is a progressive
      viewer that simulates a web browser in some respects; it can display
      images against either a background color or a dynamically generated
      background image.  For example:
 
-        rpng2 -bgpat 16 toucan.png
+	rpng2 -bgpat 16 toucan.png
 
      wpng is a purely command-line image converter from binary PBMPLUS/NetPBM
      format (.pgm or .ppm) to PNG; for example,
 
-        wpng -time < toucan-notrans.ppm > toucan-notrans.png
+	wpng -time < toucan-notrans.ppm > toucan-notrans.png
 
      would convert the specified PPM file (using redirection) to PNG, auto-
      matically setting the PNG modification-time chunk.

contrib/gregbook/readpng.c

@@ -93,7 +93,7 @@ int readpng_init(FILE *infile, ulg *pWidth, ulg *pHeight)
      * have used slightly more general png_sig_cmp() function instead */
 
     fread(sig, 1, 8, infile);
-    if (png_sig_cmp(sig, 0, 8))
+    if (!png_check_sig(sig, 8))
         return 1;   /* bad signature */
 
 
@@ -263,8 +263,7 @@ uch *readpng_get_image(double display_exponent, int *pChannels, ulg *pRowbytes)
         return NULL;
     }
 
-    Trace((stderr, "readpng_get_image:  channels = %d, rowbytes = %ld, height = %ld\n",
+    Trace((stderr, "readpng_get_image:  channels = %d, rowbytes = %ld, height = %ld\n", *pChannels, rowbytes, height));
-        *pChannels, rowbytes, height));
 
 
     /* set the individual row_pointers to point at the correct offsets */

contrib/gregbook/readpng2.c

@@ -55,10 +55,8 @@
 
 
 #include <stdlib.h>     /* for exit() prototype */
-#include <setjmp.h>
 
-#include <zlib.h>
+#include "png.h"        /* libpng header; includes zlib.h and setjmp.h */
-#include "png.h"        /* libpng header from the local directory */
 #include "readpng2.h"   /* typedefs, common macros, public prototypes */
 
 
@@ -75,10 +73,84 @@ static void readpng2_error_handler(png_structp png_ptr, png_const_charp msg);
 
 void readpng2_version_info(void)
 {
-    fprintf(stderr, "   Compiled with libpng %s; using libpng %s\n",
+#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) && \
-      PNG_LIBPNG_VER_STRING, png_libpng_ver);
+    (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__)) && \
+    defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+    /*
+     * WARNING:  This preprocessor approach means that the following code
+     *           cannot be used with a libpng DLL older than 1.2.0--the
+     *           compiled-in symbols for the new functions will not exist.
+     *           (Could use dlopen() and dlsym() on Unix and corresponding
+     *           calls for Windows, but not portable...)
+     */
+    {
+        int mmxsupport = png_mmx_support();
+        if (mmxsupport < 0)
+            fprintf(stderr, "   Compiled with libpng %s; using libpng %s "
+              "without MMX support.\n", PNG_LIBPNG_VER_STRING, png_libpng_ver);
+        else {
+            int compilerID;
+            png_uint_32 mmx_mask = png_get_mmx_flagmask(
+              PNG_SELECT_READ | PNG_SELECT_WRITE, &compilerID);
 
-    fprintf(stderr, "   and with zlib %s; using zlib %s.\n",
+            fprintf(stderr, "   Compiled with libpng %s; using libpng %s "
+              "with MMX support\n   (%s version).", PNG_LIBPNG_VER_STRING,
+              png_libpng_ver, compilerID == 1? "MSVC++" :
+              (compilerID == 2? "GNU C" : "unknown"));
+            fprintf(stderr, "  Processor (x86%s) %s MMX instructions.\n",
+#if defined(__x86_64__)
+              "_64",
+#else
+              "",
+#endif
+              mmxsupport? "supports" : "does not support");
+            if (mmxsupport > 0) {
+                int num_optims = 0;
+
+                fprintf(stderr,
+                  "      Potential MMX optimizations supported by libpng:\n");
+                if (mmx_mask & PNG_ASM_FLAG_MMX_READ_FILTER_SUB)
+                    ++num_optims;
+                if (mmx_mask & PNG_ASM_FLAG_MMX_READ_FILTER_UP)
+                    ++num_optims;
+                if (mmx_mask & PNG_ASM_FLAG_MMX_READ_FILTER_AVG)
+                    ++num_optims;
+                if (mmx_mask & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH)
+                    ++num_optims;
+                if (num_optims)
+                    fprintf(stderr,
+                      "         decoding %s row filters (reading)\n",
+                      (num_optims == 4)? "all non-trivial" : "some");
+                if (mmx_mask & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW) {
+                    fprintf(stderr, "         combining rows (reading)\n");
+                    ++num_optims;
+                }
+                if (mmx_mask & PNG_ASM_FLAG_MMX_READ_INTERLACE) {
+                    fprintf(stderr,
+                      "         expanding interlacing (reading)\n");
+                    ++num_optims;
+                }
+                mmx_mask &= ~( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  \
+                             | PNG_ASM_FLAG_MMX_READ_INTERLACE    \
+                             | PNG_ASM_FLAG_MMX_READ_FILTER_SUB   \
+                             | PNG_ASM_FLAG_MMX_READ_FILTER_UP    \
+                             | PNG_ASM_FLAG_MMX_READ_FILTER_AVG   \
+                             | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH );
+                if (mmx_mask) {
+                    fprintf(stderr, "         other (unknown)\n");
+                    ++num_optims;
+                }
+                if (num_optims == 0)
+                    fprintf(stderr, "         (none)\n");
+            }
+        }
+    }
+#else
+    fprintf(stderr, "   Compiled with libpng %s; using libpng %s "
+      "without MMX support.\n", PNG_LIBPNG_VER_STRING, png_libpng_ver);
+#endif
+
+    fprintf(stderr, "   Compiled with zlib %s; using zlib %s.\n",
       ZLIB_VERSION, zlib_version);
 }
 
@@ -87,7 +159,7 @@ void readpng2_version_info(void)
 
 int readpng2_check_sig(uch *sig, int num)
 {
-    return !png_sig_cmp(sig, 0, num);
+    return png_check_sig(sig, num);
 }
 
 
@@ -131,7 +203,7 @@ int readpng2_init(mainprog_info *mainprog_ptr)
     }
 
 
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
     /* prepare the reader to ignore all recognized chunks whose data won't be
      * used, i.e., all chunks recognized by libpng except for IHDR, PLTE, IDAT,
      * IEND, tRNS, bKGD, gAMA, and sRGB (small performance improvement) */
@@ -140,7 +212,7 @@ int readpng2_init(mainprog_info *mainprog_ptr)
          * version recognizes more chunks, add them to this list.  If a
          * future version of readpng2.c recognizes more chunks, delete them
          * from this list. */
-        static /* const */ png_byte chunks_to_ignore[] = {
+        static const png_byte chunks_to_ignore[] = {
              99,  72,  82,  77, '\0',  /* cHRM */
             104,  73,  83,  84, '\0',  /* hIST */
             105,  67,  67,  80, '\0',  /* iCCP */
@@ -160,7 +232,7 @@ int readpng2_init(mainprog_info *mainprog_ptr)
         png_set_keep_unknown_chunks(png_ptr, 1 /* PNG_HANDLE_CHUNK_NEVER */,
           chunks_to_ignore, sizeof(chunks_to_ignore)/5);
     }
-#endif /* PNG_HANDLE_AS_UNKNOWN_SUPPORTED */
+#endif /* PNG_UNKNOWN_CHUNKS_SUPPORTED */
 
 
     /* instead of doing png_init_io() here, now we set up our callback
@@ -170,6 +242,96 @@ int readpng2_init(mainprog_info *mainprog_ptr)
       readpng2_info_callback, readpng2_row_callback, readpng2_end_callback);
 
 
+    /*
+     * may as well enable or disable MMX routines here, if supported;
+     *
+     * to enable all:  mask = png_get_mmx_flagmask (
+     *                   PNG_SELECT_READ | PNG_SELECT_WRITE, &compilerID);
+     *                 flags = png_get_asm_flags (png_ptr);
+     *                 flags |= mask;
+     *                 png_set_asm_flags (png_ptr, flags);
+     *
+     * to disable all:  mask = png_get_mmx_flagmask (
+     *                   PNG_SELECT_READ | PNG_SELECT_WRITE, &compilerID);
+     *                  flags = png_get_asm_flags (png_ptr);
+     *                  flags &= ~mask;
+     *                  png_set_asm_flags (png_ptr, flags);
+     */
+
+#if (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__)) && \
+    defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+    /*
+     * WARNING:  This preprocessor approach means that the following code
+     *           cannot be used with a libpng DLL older than 1.2.0--the
+     *           compiled-in symbols for the new functions will not exist.
+     *           (Could use dlopen() and dlsym() on Unix and corresponding
+     *           calls for Windows, but not portable...)
+     */
+    {
+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+        png_uint_32 mmx_disable_mask = 0;
+        png_uint_32 asm_flags, mmx_mask;
+        int compilerID;
+
+        if (mainprog_ptr->nommxfilters)
+            mmx_disable_mask |= ( PNG_ASM_FLAG_MMX_READ_FILTER_SUB   \
+                                | PNG_ASM_FLAG_MMX_READ_FILTER_UP    \
+                                | PNG_ASM_FLAG_MMX_READ_FILTER_AVG   \
+                                | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH );
+        if (mainprog_ptr->nommxcombine)
+            mmx_disable_mask |= PNG_ASM_FLAG_MMX_READ_COMBINE_ROW;
+        if (mainprog_ptr->nommxinterlace)
+            mmx_disable_mask |= PNG_ASM_FLAG_MMX_READ_INTERLACE;
+        asm_flags = png_get_asm_flags(png_ptr);
+        png_set_asm_flags(png_ptr, asm_flags & ~mmx_disable_mask);
+
+
+        /* Now query libpng's asm settings, just for yuks.  Note that this
+         * differs from the querying of its *potential* MMX capabilities
+         * in readpng2_version_info(); this is true runtime verification. */
+
+        asm_flags = png_get_asm_flags(png_ptr);
+        mmx_mask = png_get_mmx_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE,
+          &compilerID);
+        if (asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_COMPILED)
+            fprintf(stderr,
+              "  MMX support (%s version) is compiled into libpng\n",
+              compilerID == 1? "MSVC++" :
+              (compilerID == 2? "GNU C" : "unknown"));
+        else
+            fprintf(stderr, "  MMX support is not compiled into libpng\n");
+        fprintf(stderr, "  MMX instructions are %ssupported by CPU\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU)? "" : "not ");
+        fprintf(stderr, "  MMX read support for combining rows is %sabled\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)? "en" : "dis");
+        fprintf(stderr,
+          "  MMX read support for expanding interlacing is %sabled\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_READ_INTERLACE)? "en" : "dis");
+        fprintf(stderr, "  MMX read support for \"sub\" filter is %sabled\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB)? "en" : "dis");
+        fprintf(stderr, "  MMX read support for \"up\" filter is %sabled\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP)? "en" : "dis");
+        fprintf(stderr, "  MMX read support for \"avg\" filter is %sabled\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG)? "en" : "dis");
+        fprintf(stderr, "  MMX read support for \"Paeth\" filter is %sabled\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH)? "en" : "dis");
+        asm_flags &= (mmx_mask & ~( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  \
+                                  | PNG_ASM_FLAG_MMX_READ_INTERLACE    \
+                                  | PNG_ASM_FLAG_MMX_READ_FILTER_SUB   \
+                                  | PNG_ASM_FLAG_MMX_READ_FILTER_UP    \
+                                  | PNG_ASM_FLAG_MMX_READ_FILTER_AVG   \
+                                  | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ));
+        if (asm_flags)
+            fprintf(stderr,
+              "  additional MMX support is also enabled (0x%02lx)\n",
+              asm_flags);
+#else  /* !PNG_ASSEMBLER_CODE_SUPPORTED */
+        fprintf(stderr, "  MMX querying is disabled in libpng.\n");
+#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
+    }
+#endif
+
+
     /* make sure we save our pointers for use in readpng2_decode_data() */
 
     mainprog_ptr->png_ptr = png_ptr;
@@ -217,12 +379,7 @@ static void readpng2_info_callback(png_structp png_ptr, png_infop info_ptr)
 {
     mainprog_info  *mainprog_ptr;
     int  color_type, bit_depth;
-    png_uint_32 width, height;
-#ifdef PNG_FLOATING_POINT_SUPPORTED
     double  gamma;
-#else
-    png_fixed_point gamma;
-#endif
 
 
     /* setjmp() doesn't make sense here, because we'd either have to exit(),
@@ -257,10 +414,8 @@ static void readpng2_info_callback(png_structp png_ptr, png_infop info_ptr)
 
     /* this is just like in the non-progressive case */
 
-    png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
+    png_get_IHDR(png_ptr, info_ptr, &mainprog_ptr->width,
-       NULL, NULL, NULL);
+      &mainprog_ptr->height, &bit_depth, &color_type, NULL, NULL, NULL);
-    mainprog_ptr->width = (ulg)width;
-    mainprog_ptr->height = (ulg)height;
 
 
     /* since we know we've read all of the PNG file's "header" (i.e., up
@@ -333,19 +488,11 @@ static void readpng2_info_callback(png_structp png_ptr, png_infop info_ptr)
      * "gamma" value for the entire display system, i.e., the product of
      * LUT_exponent and CRT_exponent. */
 
-#ifdef PNG_FLOATING_POINT_SUPPORTED
     if (png_get_gAMA(png_ptr, info_ptr, &gamma))
         png_set_gamma(png_ptr, mainprog_ptr->display_exponent, gamma);
     else
         png_set_gamma(png_ptr, mainprog_ptr->display_exponent, 0.45455);
-#else
+
-    if (png_get_gAMA_fixed(png_ptr, info_ptr, &gamma))
-        png_set_gamma_fixed(png_ptr,
-            (png_fixed_point)(100000*mainprog_ptr->display_exponent+.5), gamma);
-    else
-        png_set_gamma_fixed(png_ptr,
-            (png_fixed_point)(100000*mainprog_ptr->display_exponent+.5), 45455);
-#endif
 
     /* we'll let libpng expand interlaced images, too */
 
@@ -494,12 +641,5 @@ static void readpng2_error_handler(png_structp png_ptr, png_const_charp msg)
         exit(99);
     }
 
-    /* Now we have our data structure we can use the information in it
-     * to return control to our own higher level code (all the points
-     * where 'setjmp' is called in this file.)  This will work with other
-     * error handling mechanisms as well - libpng always calls png_error
-     * when it can proceed no further, thus, so long as the error handler
-     * is intercepted, application code can do its own error recovery.
-     */
     longjmp(mainprog_ptr->jmpbuf, 1);
 }

contrib/gregbook/readpng2.h

@@ -4,7 +4,7 @@
 
   ---------------------------------------------------------------------------
 
-      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
 
       This software is provided "as is," without warranty of any kind,
       express or implied.  In no event shall the author or contributors
@@ -69,12 +69,6 @@
 #  define Trace(x)  ;
 #endif
 
-enum rpng2_states {
-    kPreInit = 0,
-    kWindowInit,
-    kDone
-};
-
 typedef unsigned char   uch;
 typedef unsigned short  ush;
 typedef unsigned long   ulg;
@@ -96,7 +90,12 @@ typedef struct _mainprog_info {
     int rowbytes;
     int channels;
     int need_bgcolor;
-    int state;
+#if (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__))
+    int nommxfilters;
+    int nommxcombine;
+    int nommxinterlace;
+#endif
+    int done;
     uch bg_red;
     uch bg_green;
     uch bg_blue;

contrib/gregbook/rpng-win.c

@@ -23,11 +23,10 @@
               command-line parsing bug
     - 1.10:  enabled "message window"/console (thanks to David Geldreich)
     - 2.00:  dual-licensed (added GNU GPL)
-    - 2.01:  fixed improper display of usage screen on PNG error(s)
 
   ---------------------------------------------------------------------------
 
-      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
 
       This software is provided "as is," without warranty of any kind,
       express or implied.  In no event shall the author or contributors
@@ -78,40 +77,14 @@
 
 #define PROGNAME  "rpng-win"
 #define LONGNAME  "Simple PNG Viewer for Windows"
-#define VERSION   "2.01 of 16 March 2008"
+#define VERSION   "2.00 of 2 June 2007"
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
 #include <windows.h>
-#ifdef __CYGWIN__
-/* getch replacement. Turns out, we don't really need this,
- * but leave it here if we ever enable any of the uses of
- * _getch in the main code
- */
-#include <unistd.h>
-#include <termio.h>
-#include <sys/ioctl.h>
-int repl_getch( void )
-{
-  char ch;
-  int fd = fileno(stdin);
-  struct termio old_tty, new_tty;
-
-  ioctl(fd, TCGETA, &old_tty);
-  new_tty = old_tty;
-  new_tty.c_lflag &= ~(ICANON | ECHO | ISIG);
-  ioctl(fd, TCSETA, &new_tty);
-  fread(&ch, 1, sizeof(ch), stdin);
-  ioctl(fd, TCSETA, &old_tty);
-
-  return ch;
-}
-#define _getch repl_getch
-#else
 #include <conio.h>      /* only for _getch() */
-#endif
 
 /* #define DEBUG  :  this enables the Trace() macros */
 
@@ -179,7 +152,7 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
 
     filename = (char *)NULL;
 
-#ifndef __CYGWIN__
+
     /* First reenable console output, which normally goes to the bit bucket
      * for windowed apps.  Closing the console window will terminate the
      * app.  Thanks to David.Geldreich@realviz.com for supplying the magical
@@ -188,7 +161,6 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
     AllocConsole();
     freopen("CONOUT$", "a", stderr);
     freopen("CONOUT$", "a", stdout);
-#endif
 
 
     /* Next set the default value for our display-system exponent, i.e.,
@@ -299,43 +271,9 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
         }
     }
 
-    if (!filename)
+    if (!filename) {
         ++error;
-
+    } else if (!(infile = fopen(filename, "rb"))) {
-
-    /* print usage screen if any errors up to this point */
-
-    if (error) {
-#ifndef __CYGWIN__
-        int ch;
-#endif
-
-        fprintf(stderr, "\n%s %s:  %s\n\n", PROGNAME, VERSION, appname);
-        readpng_version_info();
-        fprintf(stderr, "\n"
-          "Usage:  %s [-gamma exp] [-bgcolor bg] file.png\n"
-          "    exp \ttransfer-function exponent (``gamma'') of the display\n"
-          "\t\t  system in floating-point format (e.g., ``%.1f''); equal\n"
-          "\t\t  to the product of the lookup-table exponent (varies)\n"
-          "\t\t  and the CRT exponent (usually 2.2); must be positive\n"
-          "    bg  \tdesired background color in 7-character hex RGB format\n"
-          "\t\t  (e.g., ``#ff7700'' for orange:  same as HTML colors);\n"
-          "\t\t  used with transparent images\n"
-          "\nPress Q, Esc or mouse button 1 after image is displayed to quit.\n"
-#ifndef __CYGWIN__
-          "Press Q or Esc to quit this usage screen.\n"
-#endif
-          "\n", PROGNAME, default_display_exponent);
-#ifndef __CYGWIN__
-        do
-            ch = _getch();
-        while (ch != 'q' && ch != 'Q' && ch != 0x1B);
-#endif
-        exit(1);
-    }
-
-
-    if (!(infile = fopen(filename, "rb"))) {
         fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
         ++error;
     } else {
@@ -348,7 +286,8 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
                     break;
                 case 2:
                     fprintf(stderr, PROGNAME
-                      ":  [%s] has bad IHDR (libpng longjmp)\n", filename);
+                      ":  [%s] has bad IHDR (libpng longjmp)\n",
+                      filename);
                     break;
                 case 4:
                     fprintf(stderr, PROGNAME ":  insufficient memory\n");
@@ -365,25 +304,34 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
     }
 
 
-    if (error) {
+    /* usage screen */
-#ifndef __CYGWIN__
-        int ch;
-#endif
 
-        fprintf(stderr, PROGNAME ":  aborting.\n");
+    if (error) {
-#ifndef __CYGWIN__
+        int ch;
+
+        fprintf(stderr, "\n%s %s:  %s\n\n", PROGNAME, VERSION, appname);
+        readpng_version_info();
+        fprintf(stderr, "\n"
+          "Usage:  %s [-gamma exp] [-bgcolor bg] file.png\n"
+          "    exp \ttransfer-function exponent (``gamma'') of the display\n"
+          "\t\t  system in floating-point format (e.g., ``%.1f''); equal\n"
+          "\t\t  to the product of the lookup-table exponent (varies)\n"
+          "\t\t  and the CRT exponent (usually 2.2); must be positive\n"
+          "    bg  \tdesired background color in 7-character hex RGB format\n"
+          "\t\t  (e.g., ``#ff7700'' for orange:  same as HTML colors);\n"
+          "\t\t  used with transparent images\n"
+          "\nPress Q, Esc or mouse button 1 after image is displayed to quit.\n"
+          "Press Q or Esc to quit this usage screen.\n"
+          "\n", PROGNAME, default_display_exponent);
         do
             ch = _getch();
         while (ch != 'q' && ch != 'Q' && ch != 0x1B);
-#endif
+        exit(1);
-        exit(2);
     } else {
         fprintf(stderr, "\n%s %s:  %s\n", PROGNAME, VERSION, appname);
-#ifndef __CYGWIN__
         fprintf(stderr,
           "\n   [console window:  closing this window will terminate %s]\n\n",
           PROGNAME);
-#endif
     }
 
 
@@ -456,12 +404,7 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
     /* wait for the user to tell us when to quit */
 
     printf(
-#ifndef __CYGWIN__
+      "Done.  Press Q, Esc or mouse button 1 (within image window) to quit.\n");
-      "Done.  Press Q, Esc or mouse button 1 (within image window) to quit.\n"
-#else
-      "Done.  Press mouse button 1 (within image window) to quit.\n"
-#endif
-    );
     fflush(stdout);
 
     while (GetMessage(&msg, NULL, 0, 0)) {

contrib/gregbook/rpng-x.c

@@ -25,11 +25,10 @@
     - 1.13:  fixed XFreeGC() crash bug (thanks to Patrick Welche)
     - 1.14:  added support for X resources (thanks to Gerhard Niklasch)
     - 2.00:  dual-licensed (added GNU GPL)
-    - 2.01:  fixed improper display of usage screen on PNG error(s)
 
   ---------------------------------------------------------------------------
 
-      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
 
       This software is provided "as is," without warranty of any kind,
       express or implied.  In no event shall the author or contributors
@@ -80,9 +79,9 @@
 
 #define PROGNAME  "rpng-x"
 #define LONGNAME  "Simple PNG Viewer for X"
-#define VERSION   "2.01 of 16 March 2008"
+#define VERSION   "2.00 of 2 June 2007"
-#define RESNAME   "rpng"        /* our X resource application name */
+#define RESNAME   "rpng"	/* our X resource application name */
-#define RESCLASS  "Rpng"        /* our X resource class name */
+#define RESCLASS  "Rpng"	/* our X resource class name */
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -266,33 +265,9 @@ int main(int argc, char **argv)
         }
     }
 
-    if (!filename)
+    if (!filename) {
         ++error;
-
+    } else if (!(infile = fopen(filename, "rb"))) {
-
-    /* print usage screen if any errors up to this point */
-
-    if (error) {
-        fprintf(stderr, "\n%s %s:  %s\n", PROGNAME, VERSION, appname);
-        readpng_version_info();
-        fprintf(stderr, "\n"
-          "Usage:  %s [-display xdpy] [-gamma exp] [-bgcolor bg] file.png\n"
-          "    xdpy\tname of the target X display (e.g., ``hostname:0'')\n"
-          "    exp \ttransfer-function exponent (``gamma'') of the display\n"
-          "\t\t  system in floating-point format (e.g., ``%.1f''); equal\n"
-          "\t\t  to the product of the lookup-table exponent (varies)\n"
-          "\t\t  and the CRT exponent (usually 2.2); must be positive\n"
-          "    bg  \tdesired background color in 7-character hex RGB format\n"
-          "\t\t  (e.g., ``#ff7700'' for orange:  same as HTML colors);\n"
-          "\t\t  used with transparent images\n"
-          "\nPress Q, Esc or mouse button 1 (within image window, after image\n"
-          "is displayed) to quit.\n"
-          "\n", PROGNAME, default_display_exponent);
-        exit(1);
-    }
-
-
-    if (!(infile = fopen(filename, "rb"))) {
         fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
         ++error;
     } else {
@@ -305,7 +280,8 @@ int main(int argc, char **argv)
                     break;
                 case 2:
                     fprintf(stderr, PROGNAME
-                      ":  [%s] has bad IHDR (libpng longjmp)\n", filename);
+                      ":  [%s] has bad IHDR (libpng longjmp)\n",
+                      filename);
                     break;
                 case 4:
                     fprintf(stderr, PROGNAME ":  insufficient memory\n");
@@ -330,9 +306,25 @@ int main(int argc, char **argv)
     }
 
 
+    /* usage screen */
+
     if (error) {
-        fprintf(stderr, PROGNAME ":  aborting.\n");
+        fprintf(stderr, "\n%s %s:  %s\n", PROGNAME, VERSION, appname);
-        exit(2);
+        readpng_version_info();
+        fprintf(stderr, "\n"
+          "Usage:  %s [-display xdpy] [-gamma exp] [-bgcolor bg] file.png\n"
+          "    xdpy\tname of the target X display (e.g., ``hostname:0'')\n"
+          "    exp \ttransfer-function exponent (``gamma'') of the display\n"
+          "\t\t  system in floating-point format (e.g., ``%.1f''); equal\n"
+          "\t\t  to the product of the lookup-table exponent (varies)\n"
+          "\t\t  and the CRT exponent (usually 2.2); must be positive\n"
+          "    bg  \tdesired background color in 7-character hex RGB format\n"
+          "\t\t  (e.g., ``#ff7700'' for orange:  same as HTML colors);\n"
+          "\t\t  used with transparent images\n"
+          "\nPress Q, Esc or mouse button 1 (within image window, after image\n"
+          "is displayed) to quit.\n"
+          "\n", PROGNAME, default_display_exponent);
+        exit(1);
     }
 
 

contrib/gregbook/rpng2-win.c

@@ -10,7 +10,7 @@
    tweaking (or maybe not).  Thanks to Adam Costello and Pieter S. van der
    Meulen for the "diamond" and "radial waves" patterns, respectively.
 
-   to do (someday, maybe):
+   to do:
     - handle quoted command-line args (especially filenames with spaces)
     - finish resizable checkerboard-gradient (sizes 4-128?)
     - use %.1023s to simplify truncation of title-bar string?
@@ -29,14 +29,10 @@
     - 1.21:  made minor tweak to usage screen to fit within 25-line console
     - 1.22:  added AMD64/EM64T support (__x86_64__)
     - 2.00:  dual-licensed (added GNU GPL)
-    - 2.01:  fixed 64-bit typo in readpng2.c
-    - 2.02:  fixed improper display of usage screen on PNG error(s); fixed
-              unexpected-EOF and file-read-error cases
-    - 2.03:  removed runtime MMX-enabling/disabling and obsolete -mmx* options
 
   ---------------------------------------------------------------------------
 
-      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
 
       This software is provided "as is," without warranty of any kind,
       express or implied.  In no event shall the author or contributors
@@ -87,7 +83,7 @@
 
 #define PROGNAME  "rpng2-win"
 #define LONGNAME  "Progressive PNG Viewer for Windows"
-#define VERSION   "2.02 of 16 March 2008"
+#define VERSION   "2.00 of 2 June 2007"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -96,33 +92,7 @@
 #include <time.h>
 #include <math.h>      /* only for PvdM background code */
 #include <windows.h>
-#ifdef __CYGWIN__
-/* getch replacement. Turns out, we don't really need this,
- * but leave it here if we ever enable any of the uses of
- * _getch in the main code
- */
-#include <unistd.h>
-#include <termio.h>
-#include <sys/ioctl.h>
-int repl_getch( void )
-{
-  char ch;
-  int fd = fileno(stdin);
-  struct termio old_tty, new_tty;
-
-  ioctl(fd, TCGETA, &old_tty);
-  new_tty = old_tty;
-  new_tty.c_lflag &= ~(ICANON | ECHO | ISIG);
-  ioctl(fd, TCSETA, &new_tty);
-  fread(&ch, 1, sizeof(ch), stdin);
-  ioctl(fd, TCSETA, &old_tty);
-
-  return ch;
-}
-#define _getch repl_getch
-#else
 #include <conio.h>     /* only for _getch() */
-#endif
 
 /* all for PvdM background code: */
 #ifndef PI
@@ -296,7 +266,7 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
     filename = (char *)NULL;
     memset(&rpng2_info, 0, sizeof(mainprog_info));
 
-#ifndef __CYGWIN__
+
     /* Next reenable console output, which normally goes to the bit bucket
      * for windowed apps.  Closing the console window will terminate the
      * app.  Thanks to David.Geldreich@realviz.com for supplying the magical
@@ -305,7 +275,7 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
     AllocConsole();
     freopen("CONOUT$", "a", stderr);
     freopen("CONOUT$", "a", stdout);
-#endif
+
 
     /* Set the default value for our display-system exponent, i.e., the
      * product of the CRT exponent and the exponent corresponding to
@@ -422,6 +392,18 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
             }
         } else if (!strncmp(*argv, "-timing", 2)) {
             timing = TRUE;
+#if (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__))
+        } else if (!strncmp(*argv, "-nommxfilters", 7)) {
+            rpng2_info.nommxfilters = TRUE;
+        } else if (!strncmp(*argv, "-nommxcombine", 7)) {
+            rpng2_info.nommxcombine = TRUE;
+        } else if (!strncmp(*argv, "-nommxinterlace", 7)) {
+            rpng2_info.nommxinterlace = TRUE;
+        } else if (!strcmp(*argv, "-nommx")) {
+            rpng2_info.nommxfilters = TRUE;
+            rpng2_info.nommxcombine = TRUE;
+            rpng2_info.nommxinterlace = TRUE;
+#endif
         } else {
             if (**argv != '-') {
                 filename = *argv;
@@ -432,56 +414,9 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
         }
     }
 
-    if (!filename)
+    if (!filename) {
         ++error;
-
+    } else if (!(infile = fopen(filename, "rb"))) {
-
-    /* print usage screen if any errors up to this point */
-
-    if (error) {
-#ifndef __CYGWIN__
-        int ch;
-#endif
-
-        fprintf(stderr, "\n%s %s:  %s\n\n", PROGNAME, VERSION, appname);
-        readpng2_version_info();
-        fprintf(stderr, "\n"
-          "Usage:  %s [-gamma exp] [-bgcolor bg | -bgpat pat] [-timing]\n"
-          "        %*s file.png\n\n"
-          "    exp \ttransfer-function exponent (``gamma'') of the display\n"
-          "\t\t  system in floating-point format (e.g., ``%.1f''); equal\n"
-          "\t\t  to the product of the lookup-table exponent (varies)\n"
-          "\t\t  and the CRT exponent (usually 2.2); must be positive\n"
-          "    bg  \tdesired background color in 7-character hex RGB format\n"
-          "\t\t  (e.g., ``#ff7700'' for orange:  same as HTML colors);\n"
-          "\t\t  used with transparent images; overrides -bgpat option\n"
-          "    pat \tdesired background pattern number (1-%d); used with\n"
-          "\t\t  transparent images; overrides -bgcolor option\n"
-          "    -timing\tenables delay for every block read, to simulate modem\n"
-          "\t\t  download of image (~36 Kbps)\n"
-          "\nPress Q, Esc or mouse button 1 after image is displayed to quit.\n"
-#ifndef __CYGWIN__
-          "Press Q or Esc to quit this usage screen. ",
-#else
-          ,
-#endif
-          PROGNAME,
-#if (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__)) && \
-    !(defined(__CYGWIN__) || defined(__MINGW32__))
-          (int)strlen(PROGNAME), " ",
-#endif
-          (int)strlen(PROGNAME), " ", default_display_exponent, num_bgpat);
-        fflush(stderr);
-#ifndef __CYGWIN__
-        do
-            ch = _getch();
-        while (ch != 'q' && ch != 'Q' && ch != 0x1B);
-#endif
-        exit(1);
-    }
-
-
-    if (!(infile = fopen(filename, "rb"))) {
         fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
         ++error;
     } else {
@@ -495,7 +430,8 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
             switch (rc) {
                 case 2:
                     fprintf(stderr, PROGNAME
-                      ":  [%s] has bad IHDR (libpng longjmp)\n", filename);
+                      ":  [%s] has bad IHDR (libpng longjmp)\n",
+                      filename);
                     break;
                 case 4:
                     fprintf(stderr, PROGNAME ":  insufficient memory\n");
@@ -512,25 +448,51 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
     }
 
 
-    if (error) {
+    /* usage screen */
-#ifndef __CYGWIN__
-        int ch;
-#endif
 
-        fprintf(stderr, PROGNAME ":  aborting.\n");
+    if (error) {
-#ifndef __CYGWIN__
+        int ch;
+
+        fprintf(stderr, "\n%s %s:  %s\n\n", PROGNAME, VERSION, appname);
+        readpng2_version_info();
+        fprintf(stderr, "\n"
+          "Usage:  %s [-gamma exp] [-bgcolor bg | -bgpat pat] [-timing]\n"
+#if (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__))
+          "        %*s [[-nommxfilters] [-nommxcombine] [-nommxinterlace] | -nommx]\n"
+#endif
+          "        %*s file.png\n\n"
+          "    exp \ttransfer-function exponent (``gamma'') of the display\n"
+          "\t\t  system in floating-point format (e.g., ``%.1f''); equal\n"
+          "\t\t  to the product of the lookup-table exponent (varies)\n"
+          "\t\t  and the CRT exponent (usually 2.2); must be positive\n"
+          "    bg  \tdesired background color in 7-character hex RGB format\n"
+          "\t\t  (e.g., ``#ff7700'' for orange:  same as HTML colors);\n"
+          "\t\t  used with transparent images; overrides -bgpat option\n"
+          "    pat \tdesired background pattern number (1-%d); used with\n"
+          "\t\t  transparent images; overrides -bgcolor option\n"
+          "    -timing\tenables delay for every block read, to simulate modem\n"
+          "\t\t  download of image (~36 Kbps)\n"
+#if (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__))
+          "    -nommx*\tdisable optimized MMX routines for decoding row filters,\n"
+          "\t\t  combining rows, and expanding interlacing, respectively\n"
+#endif
+          "\nPress Q, Esc or mouse button 1 after image is displayed to quit.\n"
+          "Press Q or Esc to quit this usage screen. ",
+          PROGNAME,
+#if (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__))
+          (int)strlen(PROGNAME), " ",
+#endif
+          (int)strlen(PROGNAME), " ", default_display_exponent, num_bgpat);
+        fflush(stderr);
         do
             ch = _getch();
         while (ch != 'q' && ch != 'Q' && ch != 0x1B);
-#endif
+        exit(1);
-        exit(2);
     } else {
         fprintf(stderr, "\n%s %s:  %s\n", PROGNAME, VERSION, appname);
-#ifndef __CYGWIN__
         fprintf(stderr,
           "\n   [console window:  closing this window will terminate %s]\n\n",
           PROGNAME);
-#endif
         fflush(stderr);
     }
 
@@ -557,7 +519,7 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
     } else
         rpng2_info.need_bgcolor = TRUE;
 
-    rpng2_info.state = kPreInit;
+    rpng2_info.done = FALSE;
     rpng2_info.mainprog_init = rpng2_win_init;
     rpng2_info.mainprog_display_row = rpng2_win_display_row;
     rpng2_info.mainprog_finish_display = rpng2_win_finish_display;
@@ -577,27 +539,10 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
         if (readpng2_decode_data(&rpng2_info, inbuf, incount))
             ++error;
         Trace((stderr, "done with readpng2_decode_data()\n"))
-
+        if (error || feof(infile) || rpng2_info.done)
-        if (error || incount != INBUFSIZE || rpng2_info.state == kDone) {
-            if (rpng2_info.state == kDone) {
-                Trace((stderr, "done decoding PNG image\n"))
-            } else if (ferror(infile)) {
-                fprintf(stderr, PROGNAME
-                  ":  error while reading PNG image file\n");
-                exit(3);
-            } else if (feof(infile)) {
-                fprintf(stderr, PROGNAME ":  end of file reached "
-                  "(unexpectedly) while reading PNG image file\n");
-                exit(3);
-            } else /* if (error) */ {
-                // will print error message below
-            }
             break;
-        }
-
         if (timing)
             Sleep(1000L);
-
         incount = fread(inbuf, 1, INBUFSIZE, infile);
     }
 
@@ -644,7 +589,7 @@ static void rpng2_win_init()
     ulg rowbytes = rpng2_info.rowbytes;
 
     Trace((stderr, "beginning rpng2_win_init()\n"))
-    Trace((stderr, "  rowbytes = %d\n", rpng2_info.rowbytes))
+    Trace((stderr, "  rowbytes = %ld\n", rpng2_info.rowbytes))
     Trace((stderr, "  width  = %ld\n", rpng2_info.width))
     Trace((stderr, "  height = %ld\n", rpng2_info.height))
 
@@ -674,8 +619,6 @@ static void rpng2_win_init()
         readpng2_cleanup(&rpng2_info);
         return;
     }
-
-    rpng2_info.state = kWindowInit;
 }
 
 
@@ -1171,14 +1114,9 @@ static void rpng2_win_finish_display()
      * we have nothing to do here except set a flag and let the user know
      * that the image is done */
 
-    rpng2_info.state = kDone;
+    rpng2_info.done = TRUE;
     printf(
-#ifndef __CYGWIN__
+      "Done.  Press Q, Esc or mouse button 1 (within image window) to quit.\n");
-      "Done.  Press Q, Esc or mouse button 1 (within image window) to quit.\n"
-#else
-      "Done.  Press mouse button 1 (within image window) to quit.\n"
-#endif
-    );
     fflush(stdout);
 }
 

contrib/gregbook/rpng2-x.c

@@ -12,7 +12,7 @@
    Thanks to Adam Costello and Pieter S. van der Meulen for the "diamond"
    and "radial waves" patterns, respectively.
 
-   to do (someday, maybe):
+   to do:
     - fix expose/redraw code:  don't draw entire row if only part exposed
     - 8-bit (colormapped) X support
     - finish resizable checkerboard-gradient (sizes 4-128?)
@@ -36,15 +36,10 @@
     - 1.32:  added AMD64/EM64T support (__x86_64__); added basic expose/redraw
               handling
     - 2.00:  dual-licensed (added GNU GPL)
-    - 2.01:  fixed 64-bit typo in readpng2.c; fixed -pause usage description
-    - 2.02:  fixed improper display of usage screen on PNG error(s); fixed
-              unexpected-EOF and file-read-error cases; fixed Trace() cut-and-
-              paste bugs
-    - 2.03:  deleted runtime MMX-enabling/disabling and obsolete -mmx* options
 
   ---------------------------------------------------------------------------
 
-      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
 
       This software is provided "as is," without warranty of any kind,
       express or implied.  In no event shall the author or contributors
@@ -95,9 +90,9 @@
 
 #define PROGNAME  "rpng2-x"
 #define LONGNAME  "Progressive PNG Viewer for X"
-#define VERSION   "2.03 of 25 February 2010"
+#define VERSION   "2.00 of 2 June 2007"
-#define RESNAME   "rpng2"       /* our X resource application name */
+#define RESNAME   "rpng2"	/* our X resource application name */
-#define RESCLASS  "Rpng"       /* our X resource class name */
+#define RESCLASS  "Rpng"	/* our X resource class name */
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -132,7 +127,7 @@
                   (e.type == KeyPress &&   /*  v--- or 1 for shifted keys */  \
                   ((k = XLookupKeysym(&e.xkey, 0)) == XK_q || k == XK_Escape)))
 
-#define NO_24BIT_MASKS /* undef case not fully written--only for redisplay() */
+#define NO_24BIT_MASKS	/* undef case not fully written--only for redisplay() */
 
 #define rgb1_max   bg_freq
 #define rgb1_min   bg_gray
@@ -302,7 +297,7 @@ int main(int argc, char **argv)
     int have_bg = FALSE;
 #ifdef FEATURE_LOOP
     int loop = FALSE;
-    long loop_interval = -1;            /* seconds (100,000 max) */
+    long loop_interval = -1;		/* seconds (100,000 max) */
 #endif
     double LUT_exponent;                /* just the lookup table */
     double CRT_exponent = 2.2;          /* just the monitor */
@@ -435,6 +430,18 @@ int main(int argc, char **argv)
                 else if (loop_interval > 100000)   /* bit more than one day */
                     loop_interval = 100000;
             }
+#endif
+#if (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__))
+        } else if (!strncmp(*argv, "-nommxfilters", 7)) {
+            rpng2_info.nommxfilters = TRUE;
+        } else if (!strncmp(*argv, "-nommxcombine", 7)) {
+            rpng2_info.nommxcombine = TRUE;
+        } else if (!strncmp(*argv, "-nommxinterlace", 7)) {
+            rpng2_info.nommxinterlace = TRUE;
+        } else if (!strcmp(*argv, "-nommx")) {
+            rpng2_info.nommxfilters = TRUE;
+            rpng2_info.nommxcombine = TRUE;
+            rpng2_info.nommxinterlace = TRUE;
 #endif
         } else {
             if (**argv != '-') {
@@ -446,17 +453,58 @@ int main(int argc, char **argv)
         }
     }
 
-    if (!filename)
+    if (!filename) {
         ++error;
+    } else if (!(infile = fopen(filename, "rb"))) {
+        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
+        ++error;
+    } else {
+        incount = fread(inbuf, 1, INBUFSIZE, infile);
+        if (incount < 8 || !readpng2_check_sig(inbuf, 8)) {
+            fprintf(stderr, PROGNAME
+              ":  [%s] is not a PNG file: incorrect signature\n",
+              filename);
+            ++error;
+        } else if ((rc = readpng2_init(&rpng2_info)) != 0) {
+            switch (rc) {
+                case 2:
+                    fprintf(stderr, PROGNAME
+                      ":  [%s] has bad IHDR (libpng longjmp)\n",
+                      filename);
+                    break;
+                case 4:
+                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
+                    break;
+                default:
+                    fprintf(stderr, PROGNAME
+                      ":  unknown readpng2_init() error\n");
+                    break;
+            }
+            ++error;
+        } else {
+            display = XOpenDisplay(displayname);
+            if (!display) {
+                readpng2_cleanup(&rpng2_info);
+                fprintf(stderr, PROGNAME ":  can't open X display [%s]\n",
+                  displayname? displayname : "default");
+                ++error;
+            }
+        }
+        if (error)
+            fclose(infile);
+    }
 
 
-    /* print usage screen if any errors up to this point */
+    /* usage screen */
 
     if (error) {
         fprintf(stderr, "\n%s %s:  %s\n\n", PROGNAME, VERSION, appname);
         readpng2_version_info();
         fprintf(stderr, "\n"
           "Usage:  %s [-display xdpy] [-gamma exp] [-bgcolor bg | -bgpat pat]\n"
+#if (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__))
+          "        %*s [[-nommxfilters] [-nommxcombine] [-nommxinterlace] | -nommx]\n"
+#endif
 #ifdef FEATURE_LOOP
           "        %*s [-usleep dur | -timing] [-pause] [-loop [sec]] file.png\n\n"
 #else
@@ -476,66 +524,27 @@ int main(int argc, char **argv)
           "    -loop\tloops through background images after initial display\n"
           "\t\t  is complete (depends on -bgpat)\n"
           "    sec \tseconds to display each background image (default = 2)\n"
+#endif
+#if (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__))
+          "    -nommx*\tdisable optimized MMX routines for decoding row filters,\n"
+          "\t\t  combining rows, and expanding interlacing, respectively\n"
 #endif
           "    dur \tduration in microseconds to wait after displaying each\n"
           "\t\t  row (for demo purposes)\n"
           "    -timing\tenables delay for every block read, to simulate modem\n"
           "\t\t  download of image (~36 Kbps)\n"
-          "    -pause\tpauses after displaying each pass until mouse clicked\n"
+          "    -pause\tpauses after displaying each pass until key pressed\n"
           "\nPress Q, Esc or mouse button 1 (within image window, after image\n"
           "is displayed) to quit.\n"
           "\n", PROGNAME,
+#if (defined(__i386__) || defined(_M_IX86) || defined(__x86_64__))
+          (int)strlen(PROGNAME), " ",
+#endif
           (int)strlen(PROGNAME), " ", default_display_exponent, num_bgpat-1);
         exit(1);
     }
 
 
-    if (!(infile = fopen(filename, "rb"))) {
-        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
-        ++error;
-    } else {
-        incount = fread(inbuf, 1, INBUFSIZE, infile);
-        if (incount < 8 || !readpng2_check_sig(inbuf, 8)) {
-            fprintf(stderr, PROGNAME
-              ":  [%s] is not a PNG file: incorrect signature\n",
-              filename);
-            ++error;
-        } else if ((rc = readpng2_init(&rpng2_info)) != 0) {
-            switch (rc) {
-                case 2:
-                    fprintf(stderr, PROGNAME
-                      ":  [%s] has bad IHDR (libpng longjmp)\n", filename);
-                    break;
-                case 4:
-                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
-                    break;
-                default:
-                    fprintf(stderr, PROGNAME
-                      ":  unknown readpng2_init() error\n");
-                    break;
-            }
-            ++error;
-        } else {
-            Trace((stderr, "about to call XOpenDisplay()\n"))
-            display = XOpenDisplay(displayname);
-            if (!display) {
-                readpng2_cleanup(&rpng2_info);
-                fprintf(stderr, PROGNAME ":  can't open X display [%s]\n",
-                  displayname? displayname : "default");
-                ++error;
-            }
-        }
-        if (error)
-            fclose(infile);
-    }
-
-
-    if (error) {
-        fprintf(stderr, PROGNAME ":  aborting.\n");
-        exit(2);
-    }
-
-
     /* set the title-bar string, but make sure buffer doesn't overflow */
 
     alen = strlen(appname);
@@ -558,7 +567,7 @@ int main(int argc, char **argv)
     } else
         rpng2_info.need_bgcolor = TRUE;
 
-    rpng2_info.state = kPreInit;
+    rpng2_info.done = FALSE;
     rpng2_info.mainprog_init = rpng2_x_init;
     rpng2_info.mainprog_display_row = rpng2_x_display_row;
     rpng2_info.mainprog_finish_display = rpng2_x_finish_display;
@@ -578,27 +587,10 @@ int main(int argc, char **argv)
         if (readpng2_decode_data(&rpng2_info, inbuf, incount))
             ++error;
         Trace((stderr, "done with readpng2_decode_data()\n"))
-
+        if (error || feof(infile) || rpng2_info.done)
-        if (error || incount != INBUFSIZE || rpng2_info.state == kDone) {
-            if (rpng2_info.state == kDone) {
-                Trace((stderr, "done decoding PNG image\n"))
-            } else if (ferror(infile)) {
-                fprintf(stderr, PROGNAME
-                  ":  error while reading PNG image file\n");
-                exit(3);
-            } else if (feof(infile)) {
-                fprintf(stderr, PROGNAME ":  end of file reached "
-                  "(unexpectedly) while reading PNG image file\n");
-                exit(3);
-            } else /* if (error) */ {
-                // will print error message below
-            }
             break;
-        }
-
         if (timing)
             sleep(1);
-
         incount = fread(inbuf, 1, INBUFSIZE, infile);
     }
 
@@ -618,7 +610,6 @@ int main(int argc, char **argv)
 #ifdef FEATURE_LOOP
 
     if (loop && bg_image) {
-        Trace((stderr, "entering -loop loop (FEATURE_LOOP)\n"))
         for (;;) {
             int i, use_sleep;
             struct timeval now, then;
@@ -714,20 +705,13 @@ int main(int argc, char **argv)
 
     /* wait for the user to tell us when to quit */
 
-    if (rpng2_info.state >= kWindowInit) {
+    do {
-        Trace((stderr, "entering final wait-for-quit-event loop\n"))
+        XNextEvent(display, &e);
-        do {
+        if (e.type == Expose) {
-            XNextEvent(display, &e);
+            XExposeEvent *ex = (XExposeEvent *)&e;
-            if (e.type == Expose) {
+            rpng2_x_redisplay_image (ex->x, ex->y, ex->width, ex->height);
-                XExposeEvent *ex = (XExposeEvent *)&e;
+        }
-                rpng2_x_redisplay_image (ex->x, ex->y, ex->width, ex->height);
+    } while (!QUIT(e,k));
-            }
-        } while (!QUIT(e,k));
-    } else {
-        fprintf(stderr, PROGNAME ":  init callback never called:  probable "
-          "libpng error while decoding PNG metadata\n");
-        exit(4);
-    }
 
 
     /* we're done:  clean up all image and X resources and go away */
@@ -752,7 +736,7 @@ static void rpng2_x_init(void)
     ulg rowbytes = rpng2_info.rowbytes;
 
     Trace((stderr, "beginning rpng2_x_init()\n"))
-    Trace((stderr, "  rowbytes = %d\n", rpng2_info.rowbytes))
+    Trace((stderr, "  rowbytes = %ld\n", rpng2_info.rowbytes))
     Trace((stderr, "  width  = %ld\n", rpng2_info.width))
     Trace((stderr, "  height = %ld\n", rpng2_info.height))
 
@@ -781,17 +765,14 @@ static void rpng2_x_init(void)
     if (rpng2_x_create_window()) {
 
         /* GRR TEMPORARY HACK:  this is fundamentally no different from cases
-         * above; libpng should call our error handler to longjmp() back to us
+         * above; libpng should longjmp() back to us when png_ptr goes away.
-         * when png_ptr goes away.  If we/it segfault instead, seems like a
+         * If we/it segfault instead, seems like a libpng bug... */
-         * libpng bug... */
 
         /* we're here via libpng callback, so if window fails, clean and bail */
         readpng2_cleanup(&rpng2_info);
         rpng2_x_cleanup();
         exit(2);
     }
-
-    rpng2_info.state = kWindowInit;
 }
 
 
@@ -1277,7 +1258,7 @@ static int rpng2_x_load_bg_image(void)
         for (row = 0;  row < rpng2_info.height;  ++row) {
             src = bg_data + row*bg_rowbytes;
             dest = ximage->data + row*ximage_rowbytes;
-            if (bpp == 32) {    /* slightly optimized version */
+            if (bpp == 32) {	/* slightly optimized version */
                 for (i = rpng2_info.width;  i > 0;  --i) {
                     red   = *src++;
                     green = *src++;
@@ -1575,7 +1556,7 @@ static void rpng2_x_finish_display(void)
      * have nothing to do here except set a flag and let the user know that
      * the image is done */
 
-    rpng2_info.state = kDone;
+    rpng2_info.done = TRUE;
     printf(
       "Done.  Press Q, Esc or mouse button 1 (within image window) to quit.\n");
     fflush(stdout);
@@ -1600,9 +1581,9 @@ static void rpng2_x_redisplay_image(ulg startcol, ulg startrow,
 
 
     Trace((stderr, "beginning display loop (image_channels == %d)\n",
-      rpng2_info.channels))
+      image_channels))
-    Trace((stderr, "   (width = %ld, rowbytes = %d, ximage_rowbytes = %d)\n",
+    Trace((stderr, "   (width = %ld, rowbytes = %ld, ximage_rowbytes = %d)\n",
-      rpng2_info.width, rpng2_info.rowbytes, ximage_rowbytes))
+      rpng2_info.width, image_rowbytes, ximage_rowbytes))
     Trace((stderr, "   (bpp = %d)\n", ximage->bits_per_pixel))
     Trace((stderr, "   (byte_order = %s)\n", ximage->byte_order == MSBFirst?
       "MSBFirst" : (ximage->byte_order == LSBFirst? "LSBFirst" : "unknown")))

contrib/gregbook/writepng.c

@@ -104,8 +104,7 @@ int writepng_init(mainprog_info *mainprog_ptr)
     /* setjmp() must be called in every function that calls a PNG-writing
      * libpng function, unless an alternate error handler was installed--
      * but compatible error handlers must either use longjmp() themselves
-     * (as in this program) or some other method to return control to
+     * (as in this program) or exit immediately, so here we go: */
-     * application code, so here we go: */
 
     if (setjmp(mainprog_ptr->jmpbuf)) {
         png_destroy_write_struct(&png_ptr, &info_ptr);
@@ -389,12 +388,5 @@ static void writepng_error_handler(png_structp png_ptr, png_const_charp msg)
         exit(99);
     }
 
-    /* Now we have our data structure we can use the information in it
-     * to return control to our own higher level code (all the points
-     * where 'setjmp' is called in this file.)  This will work with other
-     * error handling mechanisms as well - libpng always calls png_error
-     * when it can proceed no further, thus, so long as the error handler
-     * is intercepted, application code can do its own error recovery.
-     */
     longjmp(mainprog_ptr->jmpbuf, 1);
 }

contrib/pngminim/README

@@ -1,4 +0,0 @@
-This demonstrates the use of PNG_USER_CONFIG, pngusr.h and pngusr.dfa
-to build minimal decoder, encoder, and progressive reader applications.
-
-See the individual README and pngusr.dfa files for more explanation.

contrib/pngminim/decoder/README

@@ -1,10 +0,0 @@
-This demonstrates the use of PNG_USER_CONFIG, pngusr.h and pngusr.dfa
-
-The makefile builds a minimal read-only decoder with embedded libpng
-and zlib.
-
-Specify the location of the zlib source (1.2.1 or later) as ZLIBSRC
-on the make command line.
-
-If you prefer to use the shared libraries, go to contrib/pngminus
-and build the png2pnm application there. 

contrib/pngminim/decoder/makefile

@@ -1,150 +0,0 @@
-# Makefile for PngMinus (pngm2pnm)
-# Linux / Unix
-
-#CC=cc
-CC=gcc
-LD=$(CC)
-
-# If awk fails try
-# make AWK=nawk
-
-# If cpp fails try
-# make CPP=/lib/cpp
-
-RM=rm -f
-COPY=cp
-
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -I. -O1
-
-C=.c
-O=.o
-L=.a
-E=
-
-# Where to find the source code:
-PNGSRC =../../..
-ZLIBSRC=$(PNGSRC)/../zlib
-PROGSRC=$(PNGSRC)/contrib/pngminus
-
-# Zlib (minimal inflate requirements - crc32 is used by libpng)
-# zutil can be eliminated if you provide your own zcalloc and zcfree
-ZSRCS  = adler32$(C) crc32$(C) \
-	 inffast$(C) inflate$(C) inftrees$(C) \
-	 zutil$(C)
-
-# Standard headers
-ZH     = zlib.h crc32.h inffast.h inffixed.h \
-	 inflate.h inftrees.h zutil.h
-
-# Machine generated headers
-ZCONF  = zconf.h
-
-# Headers callers use
-ZINC   = zlib.h $(ZCONF)
-
-# Headers the Zlib source uses
-ZHDRS  = $(ZH) $(ZCONF)
-
-ZOBJS  = adler32$(O) crc32$(O) \
-	 inffast$(O) inflate$(O) inftrees$(O) \
-	 zutil$(O)
-
-# libpng
-PNGSRCS=png$(C) pngerror$(C) pngget$(C) pngmem$(C) \
-	pngread$(C) pngrio$(C) pngrtran$(C) pngrutil$(C) \
-	pngset$(C) pngtrans$(C)
-	
-# Standard headers
-PNGH   =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
-
-# Machine generated headers
-PNGCONF=pnglibconf.h
-
-# Headers callers use
-PNGINC= png.h pngconf.h pngusr.h $(PNGCONF)
-
-# Headers the PNG library uses
-PNGHDRS=$(PNGH) $(PNGCONF) pngusr.h
-
-PNGOBJS=png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
-	pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) \
-	pngset$(O) pngtrans$(O)
-
-PROGSRCS= pngm2pnm$(C)
-PROGHDRS=
-PROGDOCS=
-PROGOBJS= pngm2pnm$(O)
-
-OBJS    = $(PROGOBJS) $(PNGOBJS) $(ZOBJS)
-
-# implicit make rules -------------------------------------------------------
-
-# note: dependencies do not work on implicit rule lines
-.c$(O):
-	$(CC) -c $(CFLAGS) $<
-
-# dependencies
-
-all: pngm2pnm$(E)
-
-pngm2pnm$(E): $(OBJS)
-	$(LD) -o pngm2pnm$(E) $(OBJS)
-
-# The DFA_XTRA setting turns all libpng options off then
-# turns on those required for this minimal build.
-# The CPP_FLAGS setting causes pngusr.h to be included in
-# both the build of pnglibconf.h and, subsequently, when
-# building libpng itself.
-$(PNGCONF): $(PNGSRC)/scripts/pnglibconf.mak\
-	$(PNGSRC)/scripts/pnglibconf.dfa \
-	$(PNGSRC)/scripts/options.awk pngusr.h pngusr.dfa
-	$(RM) pnglibconf.h pnglibconf.dfn
-	$(MAKE) $(MAKEFLAGS) -f $(PNGSRC)/scripts/pnglibconf.mak\
-	    srcdir=$(PNGSRC) CPPFLAGS="-DPNG_USER_CONFIG"\
-	    DFA_XTRA="pngusr.dfa" $@
-
-clean:
-	$(MAKE) $(MAKEFLAGS) -f $(PNGSRC)/scripts/pnglibconf.mak\
-	    srcdir=$(PNGSRC) clean
-	$(RM) pngm2pnm$(O)
-	$(RM) pngm2pnm$(E)
-	$(RM) $(OBJS)
-
-# distclean also removes the copied source and headers
-distclean: clean
-	$(RM) -r scripts # historical reasons
-	$(RM) $(PNGSRCS) $(PNGH)
-	$(RM) $(ZSRCS) $(ZH) $(ZCONF)
-	$(RM) $(PROGSRCS) $(PROGHDRS) $(PROGDOCS)
-
-# Header file dependencies:
-$(PROGOBJS): $(PROGHDRS) $(PNGINC) $(ZINC)
-$(PNGOBJS): $(PNGHDRS) $(ZINC)
-$(ZOBJS): $(ZHDRS)
-
-# Gather the source code from the respective directories
-$(PNGSRCS) $(PNGH): $(PNGSRC)/$@
-	$(RM) $@
-	$(COPY) $(PNGSRC)/$@ $@
-
-# No dependency on the ZLIBSRC target so that it only needs
-# to be specified once.
-$(ZSRCS) $(ZH):
-	$(RM) $@
-	$(COPY) $(ZLIBSRC)/$@ $@
-
-# The unconfigured zconf.h varies in name according to the
-# zlib release
-$(ZCONF):
-	$(RM) $@
-	@for f in zconf.h.in zconf.in.h zconf.h; do\
-	    test -r $(ZLIBSRC)/$$f &&\
-	    echo $(COPY) $(ZLIBSRC)/$$f $@ &&\
-	    $(COPY) $(ZLIBSRC)/$$f $@ && exit 0;\
-	done; echo copy: $(ZLIBSRC)/zconf.h not found; exit 1
-
-pngm2pnm.c: $(PROGSRC)/png2pnm.c
-	$(RM) $@
-	$(COPY) $(PROGSRC)/png2pnm.c $@
-
-# End of makefile for pngm2pnm

contrib/pngminim/decoder/pngusr.dfa

@@ -1,39 +0,0 @@
-# pngminim/decoder/pngusr.dfa
-#
-# Copyright (c) 2010-2011 Glenn Randers-Pehrson
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# First all the build options off:
-
-everything = off
-
-# All that is required is some read code. This example switches
-# on the sequential read code (see ../preader for a progressive
-# read example).
-
-option SEQUENTIAL_READ on
-
-# You must choose fixed or floating point arithmetic:
-# option FLOATING_POINT on
-
-option FIXED_POINT on
-
-# You must chose the internal fixed point implementation or to
-# use the system floating point.  The latter is considerably
-# smaller (by about 1kbyte on an x86 system):
-# option FLOATING_ARITHMETIC on
-
-option FLOATING_ARITHMETIC off
-
-# Your program will probably need other options.  The example
-# program here, pngm2pnm, requires the following.  Take a look
-# at pnglibconf.h to find out the full set of what has to be
-# enabled to make the following work.
-
-option SETJMP on
-option STDIO on
-option READ_EXPAND on
-option READ_16_TO_8 on

contrib/pngminim/decoder/pngusr.h

@@ -1,23 +0,0 @@
-/* minrdpngconf.h: headers to make a minimal png-read-only library
- *
- * Copyright (c) 2007, 2010-2011 Glenn Randers-Pehrson
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson
- */
-
-#ifndef MINRDPNGCONF_H
-#define MINRDPNGCONF_H
-
-/* To include pngusr.h set -DPNG_USER_CONFIG in CPPFLAGS */
-
-/* List options to turn off features of the build that do not
- * affect the API (so are not recorded in pnglibconf.h)
- */
-
-#define PNG_NO_WARNINGS
-
-#endif /* MINRDPNGCONF_H */

contrib/pngminim/encoder/README

@@ -1,10 +0,0 @@
-This demonstrates the use of PNG_USER_CONFIG and pngusr.h
-
-The makefile builds a minimal write-only decoder with embedded libpng
-and zlib.
-
-Specify the location of the zlib source (1.2.1 or later) as ZLIBSRC
-on the make command line.
-
-If you prefer to use the shared libraries, go to contrib/pngminus
-and build the pnm2png application there. 

contrib/pngminim/encoder/makefile

@@ -1,149 +0,0 @@
-# Makefile for PngMinus (pnm2pngm)
-# Linux / Unix
-
-#CC=cc
-CC=gcc
-LD=$(CC)
-
-# If awk fails try
-# make AWK=nawk
-
-# If cpp fails try
-# make CPP=/lib/cpp
-
-RM=rm -f
-COPY=cp
-
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZIP -I. -O1
-
-C=.c
-O=.o
-L=.a
-E=
-
-# Where to find the source code:
-PNGSRC =../../..
-ZLIBSRC=$(PNGSRC)/../zlib
-PROGSRC=$(PNGSRC)/contrib/pngminus
-
-# Zlib
-ZSRCS  = adler32$(C) compress$(C) crc32$(C) deflate$(C) \
-	 trees$(C) zutil$(C)
-
-# Standard headers
-#ZH     = zlib.h crc32.h deflate.h trees.h zutil.h
-ZH     = zlib.h crc32.h deflate.h trees.h zutil.h
-
-# Machine generated headers
-ZCONF  = zconf.h
-
-# Headers callers use
-ZINC   = zlib.h $(ZCONF)
-
-# Headers the Zlib source uses
-ZHDRS  = $(ZH) $(ZCONF)
-
-# compress is not required; it is needed to link the zlib
-# code because deflate defines an unused API function deflateBound
-# which itself calls compressBound from compress.
-ZOBJS  = adler32$(O) compress$(O) crc32$(O) deflate$(O) \
-	 trees$(O) zutil$(O)
-
-# libpng
-PNGSRCS=png$(C) pngerror$(C) pngget$(C) pngmem$(C) \
-	pngset$(C) pngtrans$(C) pngwio$(C) pngwrite$(C) \
-	pngwtran$(C) pngwutil$(C)
-
-# Standard headers
-PNGH   =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
-
-# Machine generated headers
-PNGCONF=pnglibconf.h
-
-# Headers callers use
-PNGINC= png.h pngconf.h pngusr.h $(PNGCONF)
-
-# Headers the PNG library uses
-PNGHDRS=$(PNGH) $(PNGCONF) pngusr.h
-
-PNGOBJS=png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
-	pngset$(O) pngtrans$(O) pngwio$(O) pngwrite$(O) \
-	pngwtran$(O) pngwutil$(O)
-
-PROGSRCS= pnm2pngm$(C)
-PROGHDRS=
-PROGDOCS=
-PROGOBJS= pnm2pngm$(O)
-
-OBJS    = $(PROGOBJS) $(PNGOBJS) $(ZOBJS)
-
-# implicit make rules -------------------------------------------------------
-
-.c$(O):
-	$(CC) -c $(CFLAGS) $<
-
-# dependencies
-
-all: pnm2pngm$(E)
-
-pnm2pngm$(E): $(OBJS)
-	$(LD) -o pnm2pngm$(E) $(OBJS)
-
-# The DFA_XTRA setting turns all libpng options off then
-# turns on those required for this minimal build.
-# The CPP_FLAGS setting causes pngusr.h to be included in
-# both the build of pnglibconf.h and, subsequently, when
-# building libpng itself.
-$(PNGCONF): $(PNGSRC)/scripts/pnglibconf.mak\
-	$(PNGSRC)/scripts/pnglibconf.dfa \
-	$(PNGSRC)/scripts/options.awk pngusr.h pngusr.dfa
-	$(RM) pnglibconf.h pnglibconf.dfn
-	$(MAKE) $(MAKEFLAGS) -f $(PNGSRC)/scripts/pnglibconf.mak\
-	    srcdir=$(PNGSRC) CPPFLAGS="-DPNG_USER_CONFIG"\
-	    DFA_XTRA="pngusr.dfa" $@
-
-clean:
-	$(MAKE) $(MAKEFLAGS) -f $(PNGSRC)/scripts/pnglibconf.mak\
-	    srcdir=$(PNGSRC) clean
-	$(RM) pnm2pngm$(O)
-	$(RM) pnm2pngm$(E)
-	$(RM) $(OBJS)
-
-# distclean also removes the copied source and headers
-distclean: clean
-	$(RM) -r scripts # historical reasons
-	$(RM) $(PNGSRCS) $(PNGH)
-	$(RM) $(ZSRCS) $(ZH) $(ZCONF)
-	$(RM) $(PROGSRCS) $(PROGHDRS) $(PROGDOCS)
-
-# Header file dependencies:
-$(PROGOBJS): $(PROGHDRS) $(PNGINC) $(ZINC)
-$(PNGOBJS): $(PNGHDRS) $(ZINC)
-$(ZOBJS): $(ZHDRS)
-
-# Gather the source code from the respective directories
-$(PNGSRCS) $(PNGH): $(PNGSRC)/$@
-	$(RM) $@
-	$(COPY) $(PNGSRC)/$@ $@
-
-# No dependency on the ZLIBSRC target so that it only needs
-# to be specified once.
-$(ZSRCS) $(ZH):
-	$(RM) $@
-	$(COPY) $(ZLIBSRC)/$@ $@
-
-# The unconfigured zconf.h varies in name according to the
-# zlib release
-$(ZCONF):
-	$(RM) $@
-	@for f in zconf.h.in zconf.in.h zconf.h; do\
-	    test -r $(ZLIBSRC)/$$f &&\
-	    echo $(COPY) $(ZLIBSRC)/$$f $@ &&\
-	    $(COPY) $(ZLIBSRC)/$$f $@ && exit 0;\
-	done; echo copy: $(ZLIBSRC)/zconf.h not found; exit 1
-
-pnm2pngm.c: $(PROGSRC)/pnm2png.c
-	$(RM) $@
-	$(COPY) $(PROGSRC)/pnm2png.c $@
-
-# End of makefile for pnm2pngm

contrib/pngminim/encoder/pngusr.dfa

@@ -1,35 +0,0 @@
-# pngminim/encoder/pngusr.dfa
-#
-# Copyright (c) 2010-2011 Glenn Randers-Pehrson
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# First all the build options off:
-
-everything = off
-
-# Switch on the write code - this makes a minimalist encoder
-
-option WRITE on
-
-# You must choose fixed or floating point arithmetic:
-# option FLOATING_POINT on
-
-option FIXED_POINT on
-
-# You must chose the internal fixed point implementation or to
-# use the system floating point.  The latter is considerably
-# smaller (by about 1kbyte on an x86 system):
-# option FLOATING_ARITHMETIC on
-
-option FLOATING_ARITHMETIC off
-
-# Your program will probably need other options.  The example
-# program here, pnm2pngm, requires the following.  Take a look
-# at pnglibconf.h to find out the full set of what has to be
-# enabled to make the following work.
-
-option SETJMP on
-option STDIO on

contrib/pngminim/encoder/pngusr.h

@@ -1,23 +0,0 @@
-/* minwrpngconf.h: headers to make a minimal png-write-only library
- *
- * Copyright (c) 2007, 2010-2011 Glenn Randers-Pehrson
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson
- */
-
-#ifndef MINWRPNGCONF_H
-#define MINWRPNGCONF_H
-
-/* To include pngusr.h set -DPNG_USER_CONFIG in CPPFLAGS */
-
-/* List options to turn off features of the build that do not
- * affect the API (so are not recorded in pnglibconf.h)
- */
-
-#define PNG_NO_WARNINGS
-
-#endif /* MINWRPNGCONF_H */

contrib/pngminim/preader/README

@@ -1,15 +0,0 @@
-This demonstrates the use of PNG_USER_CONFIG and pngusr.h
-
-The makefile builds a minimal read-only progressive decoder with
-embedded libpng, zlib and your system's X library.
-
-Specify the location of the zlib source (1.2.1 or later) as ZLIBSRC
-on the make command line.
-
-Edit makefile if required, to find your X library and include files,
-then
-    
-    make ZLIBSRC=directory
- 
-If you prefer to use the shared libraries, go to contrib/gregbook
-and build the rpng2-x application there. 

contrib/pngminim/preader/makefile

@@ -1,165 +0,0 @@
-# Makefile for PngMinus (rpng2)
-# Linux / Unix
-
-#CC=cc
-CC=gcc
-LD=$(CC)
-
-# If awk fails try
-# make AWK=nawk
-
-# If cpp fails try
-# make CPP=/lib/cpp
-
-RM=rm -f
-COPY=cp
-
-#XINC = -I/usr/include			# old-style, stock X distributions
-#XLIB = -L/usr/lib/X11 -lX11		#  (including SGI IRIX)
-
-#XINC = -I/usr/openwin/include		# Sun workstations (OpenWindows)
-#XLIB = -L/usr/openwin/lib -lX11
-
-XINC = -I/usr/X11R6/include		# new X distributions (X.org, etc.)
-XLIB = -L/usr/X11R6/lib -lX11
-#XLIB = -L/usr/X11R6/lib64 -lX11	# e.g., Red Hat on AMD64
-
-#XINC = -I/usr/local/include   		# FreeBSD
-#XLIB = -L/usr/local/lib -lX11
-
-#LIBS = $(XLIB)
-LIBS = $(XLIB) -lm                      #platforms that need libm
-
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -I. $(XINC) -O1
-
-C=.c
-O=.o
-L=.a
-E=
-
-# Where to find the source code:
-PNGSRC =../../..
-ZLIBSRC=$(PNGSRC)/../zlib
-PROGSRC=$(PNGSRC)/contrib/gregbook
-
-# Zlib (minimal inflate requirements - crc32 is used by libpng)
-# zutil can be eliminated if you provide your own zcalloc and zcfree
-ZSRCS  = adler32$(C) crc32$(C) \
-	 inffast$(C) inflate$(C) inftrees$(C) \
-	 zutil$(C)
-
-# Standard headers
-ZH     = zlib.h crc32.h inffast.h inffixed.h \
-	 inflate.h inftrees.h zutil.h
-
-# Machine generated headers
-ZCONF  = zconf.h
-
-# Headers callers use
-ZINC   = zlib.h $(ZCONF)
-
-# Headers the Zlib source uses
-ZHDRS  = $(ZH) $(ZCONF)
-
-ZOBJS  = adler32$(O) crc32$(O) \
-	 inffast$(O) inflate$(O) inftrees$(O) \
-	 zutil$(O)
-
-# libpng
-PNGSRCS=png$(C) pngerror$(C) pngget$(C) pngmem$(C) \
-	pngpread$(C) pngread$(C) pngrio$(C) pngrtran$(C) pngrutil$(C) \
-	pngset$(C) pngtrans$(C)
-
-# Standard headers
-PNGH   =png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
-
-# Machine generated headers
-PNGCONF=pnglibconf.h
-
-# Headers callers use
-PNGINC= png.h pngconf.h pngusr.h $(PNGCONF)
-
-# Headers the PNG library uses
-PNGHDRS=$(PNGH) $(PNGCONF) pngusr.h
-
-PNGOBJS=png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
-	pngpread$(O) pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) \
-	pngset$(O) pngtrans$(O)
-
-PROGSRCS= rpng2-x$(C) readpng2$(C)
-PROGHDRS= readpng2.h
-PROGDOCS= COPYING LICENSE
-PROGOBJS= rpng2-x$(O) readpng2$(O)
-
-OBJS    = $(PROGOBJS) $(PNGOBJS) $(ZOBJS)
-
-# implicit make rules -------------------------------------------------------
-
-.c$(O):
-	$(CC) -c $(CFLAGS) $<
-
-# dependencies
-
-all: $(PROGDOCS) rpng2-x$(E)
-
-rpng2-x$(E): $(OBJS)
-	$(LD) -o rpng2-x$(E) $(OBJS) $(LIBS)
-
-# The DFA_XTRA setting turns all libpng options off then
-# turns on those required for this minimal build.
-# The CPP_FLAGS setting causes pngusr.h to be included in
-# both the build of pnglibconf.h and, subsequently, when
-# building libpng itself.
-$(PNGCONF): $(PNGSRC)/scripts/pnglibconf.mak\
-	$(PNGSRC)/scripts/pnglibconf.dfa \
-	$(PNGSRC)/scripts/options.awk pngusr.h pngusr.dfa
-	$(RM) pnglibconf.h pnglibconf.dfn
-	$(MAKE) $(MAKEFLAGS) -f $(PNGSRC)/scripts/pnglibconf.mak\
-	    srcdir=$(PNGSRC) CPPFLAGS="-DPNG_USER_CONFIG"\
-	    DFA_XTRA="pngusr.dfa" $@
-
-clean:
-	$(MAKE) $(MAKEFLAGS) -f $(PNGSRC)/scripts/pnglibconf.mak\
-	    srcdir=$(PNGSRC) clean
-	$(RM) rpng2-x$(O)
-	$(RM) rpng2-x$(E)
-	$(RM) $(OBJS)
-
-# distclean also removes the copied source and headers
-distclean: clean
-	$(RM) -r scripts # historical reasons
-	$(RM) $(PNGSRCS) $(PNGH)
-	$(RM) $(ZSRCS) $(ZH) $(ZCONF)
-	$(RM) $(PROGSRCS) $(PROGHDRS) $(PROGDOCS)
-
-# Header file dependencies:
-$(PROGOBJS): $(PROGHDRS) $(PNGINC) $(ZINC)
-$(PNGOBJS): $(PNGHDRS) $(ZINC)
-$(ZOBJS): $(ZHDRS)
-
-# Gather the source code from the respective directories
-$(PNGSRCS) $(PNGH): $(PNGSRC)/$@
-	$(RM) $@
-	$(COPY) $(PNGSRC)/$@ $@
-
-# No dependency on the ZLIBSRC target so that it only needs
-# to be specified once.
-$(ZSRCS) $(ZH):
-	$(RM) $@
-	$(COPY) $(ZLIBSRC)/$@ $@
-
-# The unconfigured zconf.h varies in name according to the
-# zlib release
-$(ZCONF):
-	$(RM) $@
-	@for f in zconf.h.in zconf.in.h zconf.h; do\
-	    test -r $(ZLIBSRC)/$$f &&\
-	    echo $(COPY) $(ZLIBSRC)/$$f $@ &&\
-	    $(COPY) $(ZLIBSRC)/$$f $@ && exit 0;\
-	done; echo copy: $(ZLIBSRC)/zconf.h not found; exit 1
-
-$(PROGSRCS) $(PROGHDRS) $(PROGDOCS): $(PROGSRC)/$@
-	$(RM) $@
-	$(COPY) $(PROGSRC)/$@ $@
-
-# End of makefile for rpng2-x

contrib/pngminim/preader/pngusr.dfa

@@ -1,40 +0,0 @@
-# pngminim/preader/pngusr.dfa
-#
-# Copyright (c) 2010-2011 Glenn Randers-Pehrson
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# First all the build options off:
-
-everything = off
-
-# Just switch on the progressive read code
-
-option PROGRESSIVE_READ on
-
-# You may choose fixed or floating point APIs:
-# option FLOATING_POINT on
-
-option FIXED_POINT on
-
-# You must chose the internal fixed point implementation or to
-# use the system floating point.  The latter is considerably
-# smaller (by about 1kbyte on an x86 system):
-
-option FLOATING_ARITHMETIC on
-# option FLOATING_ARITHMETIC off
-
-# Your program will probably need other options.  The example
-# program here, rpng2-x, requires the following.  Take a look
-# at pnglibconf.h to find out the full set of what has to be
-# enabled to make the following work.
-
-option SETJMP on
-option STDIO on
-option READ_bKGD on
-option READ_GAMMA on
-option READ_EXPAND on
-option READ_16_TO_8 on
-option READ_GRAY_TO_RGB on

contrib/pngminim/preader/pngusr.h

@@ -1,23 +0,0 @@
-/* minrdpngconf.h: headers to make a minimal png-read-only library
- *
- * Copyright (c) 2009, 2010-2011 Glenn Randers-Pehrson
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson
- */
-
-#ifndef MINPRDPNGCONF_H
-#define MINPRDPNGCONF_H
-
-/* To include pngusr.h set -DPNG_USER_CONFIG in CPPFLAGS */
-
-/* List options to turn off features of the build that do not
- * affect the API (so are not recorded in pnglibconf.h)
- */
-
-#define PNG_NO_WARNINGS
-
-#endif /* MINPRDPNGCONF_H */

contrib/pngminus/png2pnm.c

@@ -188,7 +188,7 @@ void usage()
 BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw, BOOL alpha)
 {
   png_struct    *png_ptr = NULL;
-  png_info        *info_ptr = NULL;
+  png_info	*info_ptr = NULL;
   png_byte      buf[8];
   png_byte      *png_pixels = NULL;
   png_byte      **row_pointers = NULL;
@@ -211,8 +211,8 @@ BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw, BOOL a
   if (ret != 8)
     return FALSE;
 
-  ret = png_sig_cmp (buf, 0, 8);
+  ret = png_check_sig (buf, 8);
-  if (ret)
+  if (!ret)
     return FALSE;
 
   /* create png and info structures */
@@ -381,7 +381,7 @@ BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw, BOOL a
           fputc ((int) *pix_ptr++ , pnm_file);
         else
           if (bit_depth == 16){
-            dep_16 = (long) *pix_ptr++;
+	    dep_16 = (long) *pix_ptr++;
             fprintf (pnm_file, "%ld ", (dep_16 << 8) + ((long) *pix_ptr++));
           }
           else
@@ -401,9 +401,9 @@ BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw, BOOL a
             fputc ((int) *pix_ptr++ , alpha_file);
           else
             if (bit_depth == 16){
-              dep_16 = (long) *pix_ptr++;
+	      dep_16 = (long) *pix_ptr++;
               fprintf (alpha_file, "%ld ", (dep_16 << 8) + (long) *pix_ptr++);
-            }  
+	    }  
             else
               fprintf (alpha_file, "%ld ", (long) *pix_ptr++);
         }

contrib/pngsuite/README

@@ -1,58 +1,41 @@
 
 pngsuite
 --------
-(c) Willem van Schaik, 1999, 2011
+(c) Willem van Schaik, 1999
 
-Permission to use, copy, modify, and distribute these images for any
+Permission to use, copy, and distribute these images for any purpose and
-purpose and without fee is hereby granted.
+without fee is hereby granted.
 
-The 15 "bas*.png" images are part of the much larger PngSuite test-set of 
+These 15 images are part of the much larger PngSuite test-set of 
 images, available for developers of PNG supporting software. The 
 complete set, available at http:/www.schaik.com/pngsuite/, contains 
 a variety of images to test interlacing, gamma settings, ancillary
 chunks, etc.
 
-The "ft*.png" images are "free/libre" replacements for the transparent
-corresponding t*.png images in the PngSuite.
-
 The images in this directory represent the basic PNG color-types:
 grayscale (1-16 bit deep), full color (8 or 16 bit), paletted
 (1-8 bit) and grayscale or color images with alpha channel. You
 can use them to test the proper functioning of PNG software.
 
-    filename       depth type
+    filename      depth type
     ------------ ------ --------------
-    basn0g01.png   1-bit grayscale
+    basn0g01.png  1-bit grayscale
-    basn0g02.png   2-bit grayscale
+    basn0g02.png  2-bit grayscale
-    basn0g04.png   4-bit grayscale
+    basn0g04.png  4-bit grayscale
-    basn0g08.png   8-bit grayscale
+    basn0g08.png  8-bit grayscale
-    basn0g16.png  16-bit grayscale
+    basn0g16.png 16-bit grayscale
-    basn2c08.png   8-bit truecolor
+    basn2c08.png  8-bit truecolor
-    basn2c16.png  16-bit truecolor
+    basn2c16.png 16-bit truecolor
-    basn3p01.png   1-bit paletted
+    basn3p01.png  1-bit paletted
-    basn3p02.png   2-bit paletted
+    basn3p02.png  2-bit paletted
-    basn3p04.png   4-bit paletted
+    basn3p04.png  4-bit paletted
-    basn3p08.png   8-bit paletted
+    basn3p08.png  8-bit paletted
-    basn4a08.png   8-bit gray with alpha
+    basn4a08.png  8-bit gray with alpha
-    basn4a16.png  16-bit gray with alpha
+    basn4a16.png 16-bit gray with alpha
-    basn6a08.png   8-bit RGBA
+    basn6a08.png  8-bit RGBA
-    basn6a16.png  16-bit RGBA
+    basn6a16.png 16-bit RGBA
 
-    ftbbn0g04.png  4-bit grayscale, black bKGD
+Here is the correct result of typing "pngtest -m *.png" in
-    ftbbn2c16.png 16-bit truecolor, black bKGD
-    ftbbn3p08.png  8-bit paletted, black bKGD
-    ftbgn2c16.png 16-bit truecolor, gray bKGD
-    ftbgn3p08.png  8-bit paletted, gray bKGD
-    ftbrn2c08.png  8-bit truecolor, red bKGD
-    ftbwn0g16.png 16-bit gray, white bKGD
-    ftbwn3p08.png  8-bit paletted, white bKGD
-    ftbyn3p08.png  8-bit paletted, yellow bKGD
-    ftp0n0g08.png  8-bit grayscale, opaque
-    ftp0n2c08.png  8-bit truecolor, opaque 
-    ftp0n3p08.png  8-bit paletted, opaque
-    ftp1n3p08.png  8-bit paletted, no bKGD
-
-Here is the correct result of typing "pngtest -m bas*.png" in
 this directory:
 
 Testing basn0g01.png: PASS (524 zero samples)

contrib/visupng/PngFile.c

@@ -2,11 +2,8 @@
 //  PNGFILE.C -- Image File Functions
 //-------------------------------------
 
-// Copyright 2000, Willem van Schaik.
+// Copyright 2000, Willem van Schaik.  For conditions of distribution and
-//
+// use, see the copyright/license/disclaimer notice in png.h
-// This code is released under the libpng license.
-// For conditions of distribution and use, see the disclaimer
-// and license in png.h
 
 #include <windows.h>
 #include <commdlg.h>
@@ -35,7 +32,7 @@ png_cexcept_error(png_structp png_ptr, png_const_charp msg)
 {
    if(png_ptr)
      ;
-#ifdef PNG_CONSOLE_IO_SUPPORTED
+#ifndef PNG_NO_CONSOLE_IO
    fprintf(stderr, "libpng error: %s\n", msg);
 #endif
    {
@@ -126,7 +123,7 @@ BOOL PngLoadImage (PTSTR pstrFileName, png_byte **ppbImageData,
     // first check the eight byte PNG signature
 
     fread(pbSig, 1, 8, pfFile);
-    if (png_sig_cmp(pbSig, 0, 8))
+    if (!png_check_sig(pbSig, 8))
     {
         *ppbImageData = pbImageData = NULL;
         return FALSE;
@@ -155,7 +152,7 @@ BOOL PngLoadImage (PTSTR pstrFileName, png_byte **ppbImageData,
         
         // initialize the png structure
         
-#ifdef PNG_STDIO_SUPPORTED
+#if !defined(PNG_NO_STDIO)
         png_init_io(png_ptr, pfFile);
 #else
         png_set_read_fn(png_ptr, (png_voidp)pfFile, png_read_data);
@@ -324,7 +321,7 @@ BOOL PngSaveImage (PTSTR pstrFileName, png_byte *pDiData,
     {
         // initialize the png structure
         
-#ifdef PNG_STDIO_SUPPORTED
+#if !defined(PNG_NO_STDIO)
         png_init_io(png_ptr, pfFile);
 #else
         png_set_write_fn(png_ptr, (png_voidp)pfFile, png_write_data, png_flush);
@@ -395,7 +392,7 @@ BOOL PngSaveImage (PTSTR pstrFileName, png_byte *pDiData,
     return TRUE;
 }
 
-#ifndef PNG_STDIO_SUPPORTED
+#ifdef PNG_NO_STDIO
 
 static void
 png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)

contrib/visupng/PngFile.h

@@ -2,11 +2,8 @@
 //  PNGFILE.H -- Header File for pngfile.c
 //------------------------------------------
 
-// Copyright 2000, Willem van Schaik.
+// Copyright 2000, Willem van Schaik.  For conditions of distribution and
-
+// use, see the copyright/license/disclaimer notice in png.h
-// This code is released under the libpng license.
-// For conditions of distribution and use, see the disclaimer
-// and license in png.h
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -22,7 +19,7 @@ BOOL PngLoadImage (PTSTR pstrFileName, png_byte **ppbImageData,
 BOOL PngSaveImage (PTSTR pstrFileName, png_byte *pDiData,
                    int iWidth, int iHeight, png_color BkgColor);
 
-#ifndef PNG_STDIO_SUPPORTED
+#if defined(PNG_NO_STDIO)
 static void png_read_data(png_structp png_ptr, png_bytep data, png_size_t length);
 static void png_write_data(png_structp png_ptr, png_bytep data, png_size_t length);
 static void png_flush(png_structp png_ptr);

contrib/visupng/README.txt

@@ -1,11 +1,8 @@
 Microsoft Developer Studio Build File, Format Version 6.00 for VisualPng
 ------------------------------------------------------------------------
 
-Copyright 2000, Willem van Schaik.
+Copyright 2000, Willem van Schaik.  For conditions of distribution and
-
+use, see the copyright/license/disclaimer notice in png.h
-This code is released under the libpng license.
-For conditions of distribution and use, see the disclaimer
-and license in png.h
 
 As a PNG .dll demo VisualPng is finished. More features would only hinder
 the program's objective. However, further extensions (like support for other 

contrib/visupng/VisualPng.c

@@ -2,11 +2,8 @@
 //  VisualPng.C -- Shows a PNG image
 //------------------------------------
 
-// Copyright 2000, Willem van Schaik.
+// Copyright 2000, Willem van Schaik.  For conditions of distribution and
-
+// use, see the copyright/license/disclaimer notice in png.h
-// This code is released under the libpng license.
-// For conditions of distribution and use, see the disclaimer
-// and license in png.h
 
 // switches
 

contrib/visupng/VisualPng.dsp

@@ -43,9 +43,9 @@ RSC=rc.exe
 # PROP Intermediate_Dir "Release"
 # PROP Ignore_Export_Lib 0
 # PROP Target_Dir ""
-# ADD BASE CPP /nologo /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_NO_STDIO" /FD /c
+# ADD BASE CPP /nologo /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_NO_STDIO" /D "PNG_NO_GLOBAL_ARRAYS" /FD /c
 # SUBTRACT BASE CPP /YX
-# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_NO_STDIO" /FD /c
+# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_NO_STDIO" /D "PNG_NO_GLOBAL_ARRAYS" /FD /c
 # SUBTRACT CPP /YX
 # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
 # ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
@@ -77,9 +77,9 @@ PostBuild_Cmds=$(outdir)\VisualPng.exe ..\..\contrib\pngsuite\basn6a16.png
 # PROP Intermediate_Dir "Debug"
 # PROP Ignore_Export_Lib 0
 # PROP Target_Dir ""
-# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "PNG_NO_STDIO" /FD /GZ /c
+# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "PNG_NO_STDIO" /D "PNG_NO_GLOBAL_ARRAYS" /FD /GZ /c
 # SUBTRACT BASE CPP /YX
-# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "PNG_NO_STDIO" /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "PNG_NO_STDIO" /D "PNG_NO_GLOBAL_ARRAYS" /FD /GZ /c
 # SUBTRACT CPP /YX
 # ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
 # ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32

contrib/visupng/cexcept.h

@@ -1,30 +1,25 @@
 /*===
-cexcept.h 2.0.1 (2008-Jul-19-Sat)
+cexcept.h 2.0.0 (2001-Jul-12-Thu)
-http://www.nicemice.net/cexcept/
+Adam M. Costello <amc@cs.berkeley.edu>
-Adam M. Costello
-http://www.nicemice.net/amc/
 
 An interface for exception-handling in ANSI C (C89 and subsequent ISO
-standards), developed jointly with Cosmin Truta.
+standards), developed jointly with Cosmin Truta <cosmin@cs.toronto.edu>.
 
-    Copyright (c) 2000-2008 Adam M. Costello and Cosmin Truta.
+    Copyright (c) 2001 Adam M. Costello and Cosmin Truta.  Everyone
-    This software may be modified only if its author and version
+    is hereby granted permission to do whatever they like with this
-    information is updated accurately, and may be redistributed
+    file, provided that if they modify it they take reasonable steps to
-    only if accompanied by this unaltered notice.  Subject to those
+    avoid confusing or misleading people about the authors, version,
-    restrictions, permission is granted to anyone to do anything
+    and terms of use of the derived file.  The copyright holders make
-    with this software.  The copyright holders make no guarantees
+    no guarantees regarding this file, and are not responsible for any
-    regarding this software, and are not responsible for any damage
+    damage resulting from its use.
-    resulting from its use.
 
-The cexcept interface is not compatible with and cannot interact
+Only user-defined exceptions are supported, not "real" exceptions like
-with system exceptions (like division by zero or memory segmentation
+division by zero or memory segmentation violations.
-violation), compiler-generated exceptions (like C++ exceptions), or
-other exception-handling interfaces.
 
-When using this interface across multiple .c files, do not include
+If this interface is used by multiple .c files, they shouldn't include
 this header file directly.  Instead, create a wrapper header file that
 includes this header file and then invokes the define_exception_type
-macro (see below).  The .c files should then include that header file.
+macro (see below), and let your .c files include that header file.
 
 The interface consists of one type, one well-known name, and six macros.
 
@@ -169,7 +164,7 @@ Throw expression;
     be compatible with the type passed to define_exception_type().  The
     exception must be caught, otherwise the program may crash.
 
-    Slight limitation:  If the expression is a comma-expression, it must
+    Slight limitation:  If the expression is a comma-expression it must
     be enclosed in parentheses.
 
 
@@ -214,11 +209,11 @@ struct exception_context { \
     exception__prev = the_exception_context->penv; \
     the_exception_context->penv = &exception__env; \
     if (setjmp(exception__env) == 0) { \
-      do
+      if (&exception__prev)
 
 #define exception__catch(action) \
-      while (the_exception_context->caught = 0, \
+      else { } \
-             the_exception_context->caught); \
+      the_exception_context->caught = 0; \
     } \
     else { \
       the_exception_context->caught = 1; \
@@ -231,14 +226,14 @@ struct exception_context { \
 #define Catch(e) exception__catch(((e) = the_exception_context->v.etmp, 0))
 #define Catch_anonymous exception__catch(0)
 
-/* Try ends with do, and Catch begins with while(0) and ends with     */
+/* Try ends with if(), and Catch begins and ends with else.  This     */
-/* else, to ensure that Try/Catch syntax is similar to if/else        */
+/* ensures that the Try/Catch syntax is really the same as the        */
-/* syntax.                                                            */
+/* if/else syntax.                                                    */
 /*                                                                    */
-/* The 0 in while(0) is expressed as x=0,x in order to appease        */
+/* We use &exception__prev instead of 1 to appease compilers that     */
-/* compilers that warn about constant expressions inside while().     */
+/* warn about constant expressions inside if().  Most compilers       */
-/* Most compilers should still recognize that the condition is always */
+/* should still recognize that &exception__prev is never zero and     */
-/* false and avoid generating code for it.                            */
+/* avoid generating test code.                                        */
 
 #define Throw \
   for (;; longjmp(*the_exception_context->penv, 1)) \

depcomp

@@ -1,10 +1,7 @@
 #! /bin/sh
+
 # depcomp - compile a program generating dependencies as side-effects
-
+# Copyright 1999, 2000 Free Software Foundation, Inc.
-scriptversion=2009-04-28.21; # UTC
-
-# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009 Free
-# Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -17,7 +14,9 @@ scriptversion=2009-04-28.21; # UTC
 # GNU General Public License for more details.
 
 # You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -26,45 +25,13 @@ scriptversion=2009-04-28.21; # UTC
 
 # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
 
-case $1 in
-  '')
-     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
-     exit 1;
-     ;;
-  -h | --h*)
-    cat <<\EOF
-Usage: depcomp [--help] [--version] PROGRAM [ARGS]
-
-Run PROGRAMS ARGS to compile a file, generating dependencies
-as side-effects.
-
-Environment variables:
-  depmode     Dependency tracking mode.
-  source      Source file read by `PROGRAMS ARGS'.
-  object      Object file output by `PROGRAMS ARGS'.
-  DEPDIR      directory where to store dependencies.
-  depfile     Dependency file to output.
-  tmpdepfile  Temporary file to use when outputing dependencies.
-  libtool     Whether libtool is used (yes/no).
-
-Report bugs to <bug-automake@gnu.org>.
-EOF
-    exit $?
-    ;;
-  -v | --v*)
-    echo "depcomp $scriptversion"
-    exit $?
-    ;;
-esac
-
 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
   echo "depcomp: Variables source, object and depmode must be set" 1>&2
   exit 1
 fi
+# `libtool' can also be set to `yes' or `no'.
 
-# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
+depfile=${depfile-`echo "$object" | sed 's,\([^/]*\)$,.deps/\1,;s/\.\([^.]*\)$/.P\1/'`}
-depfile=${depfile-`echo "$object" |
-  sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
 tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
 
 rm -f "$tmpdepfile"
@@ -85,34 +52,12 @@ if test "$depmode" = dashXmstdout; then
    depmode=dashmstdout
 fi
 
-cygpath_u="cygpath -u -f -"
-if test "$depmode" = msvcmsys; then
-   # This is just like msvisualcpp but w/o cygpath translation.
-   # Just convert the backslash-escaped backslashes to single forward
-   # slashes to satisfy depend.m4
-   cygpath_u="sed s,\\\\\\\\,/,g"
-   depmode=msvisualcpp
-fi
-
 case "$depmode" in
 gcc3)
 ## gcc 3 implements dependency tracking that does exactly what
 ## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
 ## it if -MD -MP comes after the -MF stuff.  Hmm.
-## Unfortunately, FreeBSD c89 acceptance of flags depends upon
+  "$@" -MT "$object" -MD -MP -MF "$tmpdepfile"
-## the command line argument order; so add the flags where they
-## appear in depend2.am.  Note that the slowdown incurred here
-## affects only configure: in makefiles, %FASTDEP% shortcuts this.
-  for arg
-  do
-    case $arg in
-    -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
-    *)  set fnord "$@" "$arg" ;;
-    esac
-    shift # fnord
-    shift # $arg
-  done
-  "$@"
   stat=$?
   if test $stat -eq 0; then :
   else
@@ -199,14 +144,14 @@ sgi)
 ' < "$tmpdepfile" \
     | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
     tr '
-' ' ' >> "$depfile"
+' ' ' >> $depfile
-    echo >> "$depfile"
+    echo >> $depfile
 
     # The second pass generates a dummy entry for each header file.
     tr ' ' '
 ' < "$tmpdepfile" \
    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
-   >> "$depfile"
+   >> $depfile
   else
     # The sourcefile does not contain any dependencies, so just
     # store a dummy comment line, to avoid errors with the Makefile
@@ -218,43 +163,31 @@ sgi)
 
 aix)
   # The C for AIX Compiler uses -M and outputs the dependencies
-  # in a .u file.  In older versions, this file always lives in the
+  # in a .u file.  This file always lives in the current directory.
-  # current directory.  Also, the AIX compiler puts `$object:' at the
+  # Also, the AIX compiler puts `$object:' at the start of each line;
-  # start of each line; $object doesn't have directory information.
+  # $object doesn't have directory information.
-  # Version 6 uses the directory in both cases.
+  stripped=`echo "$object" | sed -e 's,^.*/,,' -e 's/\(.*\)\..*$/\1/'`
-  dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
+  tmpdepfile="$stripped.u"
-  test "x$dir" = "x$object" && dir=
+  outname="$stripped.o"
-  base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
   if test "$libtool" = yes; then
-    tmpdepfile1=$dir$base.u
-    tmpdepfile2=$base.u
-    tmpdepfile3=$dir.libs/$base.u
     "$@" -Wc,-M
   else
-    tmpdepfile1=$dir$base.u
-    tmpdepfile2=$dir$base.u
-    tmpdepfile3=$dir$base.u
     "$@" -M
   fi
-  stat=$?
 
+  stat=$?
   if test $stat -eq 0; then :
   else
-    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    rm -f "$tmpdepfile"
     exit $stat
   fi
 
-  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
-  do
-    test -f "$tmpdepfile" && break
-  done
   if test -f "$tmpdepfile"; then
     # Each line is of the form `foo.o: dependent.h'.
     # Do two passes, one to just change these to
     # `$object: dependent.h' and one to simply `dependent.h:'.
-    sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
+    sed -e "s,^$outname:,$object :," < "$tmpdepfile" > "$depfile"
-    # That's a tab and a space in the [].
+    sed -e "s,^$outname: \(.*\)$,\1:," < "$tmpdepfile" >> "$depfile"
-    sed -e 's,^.*\.[a-z]*:[	 ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
   else
     # The sourcefile does not contain any dependencies, so just
     # store a dummy comment line, to avoid errors with the Makefile
@@ -264,141 +197,37 @@ aix)
   rm -f "$tmpdepfile"
   ;;
 
-icc)
-  # Intel's C compiler understands `-MD -MF file'.  However on
-  #    icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
-  # ICC 7.0 will fill foo.d with something like
-  #    foo.o: sub/foo.c
-  #    foo.o: sub/foo.h
-  # which is wrong.  We want:
-  #    sub/foo.o: sub/foo.c
-  #    sub/foo.o: sub/foo.h
-  #    sub/foo.c:
-  #    sub/foo.h:
-  # ICC 7.1 will output
-  #    foo.o: sub/foo.c sub/foo.h
-  # and will wrap long lines using \ :
-  #    foo.o: sub/foo.c ... \
-  #     sub/foo.h ... \
-  #     ...
-
-  "$@" -MD -MF "$tmpdepfile"
-  stat=$?
-  if test $stat -eq 0; then :
-  else
-    rm -f "$tmpdepfile"
-    exit $stat
-  fi
-  rm -f "$depfile"
-  # Each line is of the form `foo.o: dependent.h',
-  # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
-  # Do two passes, one to just change these to
-  # `$object: dependent.h' and one to simply `dependent.h:'.
-  sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
-  # Some versions of the HPUX 10.20 sed can't process this invocation
-  # correctly.  Breaking it into two sed invocations is a workaround.
-  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
-    sed -e 's/$/ :/' >> "$depfile"
-  rm -f "$tmpdepfile"
-  ;;
-
-hp2)
-  # The "hp" stanza above does not work with aCC (C++) and HP's ia64
-  # compilers, which have integrated preprocessors.  The correct option
-  # to use with these is +Maked; it writes dependencies to a file named
-  # 'foo.d', which lands next to the object file, wherever that
-  # happens to be.
-  # Much of this is similar to the tru64 case; see comments there.
-  dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
-  test "x$dir" = "x$object" && dir=
-  base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
-  if test "$libtool" = yes; then
-    tmpdepfile1=$dir$base.d
-    tmpdepfile2=$dir.libs/$base.d
-    "$@" -Wc,+Maked
-  else
-    tmpdepfile1=$dir$base.d
-    tmpdepfile2=$dir$base.d
-    "$@" +Maked
-  fi
-  stat=$?
-  if test $stat -eq 0; then :
-  else
-     rm -f "$tmpdepfile1" "$tmpdepfile2"
-     exit $stat
-  fi
-
-  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
-  do
-    test -f "$tmpdepfile" && break
-  done
-  if test -f "$tmpdepfile"; then
-    sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
-    # Add `dependent.h:' lines.
-    sed -ne '2,${
-	       s/^ *//
-	       s/ \\*$//
-	       s/$/:/
-	       p
-	     }' "$tmpdepfile" >> "$depfile"
-  else
-    echo "#dummy" > "$depfile"
-  fi
-  rm -f "$tmpdepfile" "$tmpdepfile2"
-  ;;
-
 tru64)
-   # The Tru64 compiler uses -MD to generate dependencies as a side
+   # The Tru64 AIX compiler uses -MD to generate dependencies as a side
    # effect.  `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
-   # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
+   # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put 
    # dependencies in `foo.d' instead, so we check for that too.
    # Subdirectories are respected.
-   dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
-   test "x$dir" = "x$object" && dir=
-   base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
 
+   tmpdepfile1="$object.d"
+   tmpdepfile2=`echo "$object" | sed -e 's/.o$/.d/'` 
    if test "$libtool" = yes; then
-      # With Tru64 cc, shared objects can also be used to make a
-      # static library.  This mechanism is used in libtool 1.4 series to
-      # handle both shared and static libraries in a single compilation.
-      # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
-      #
-      # With libtool 1.5 this exception was removed, and libtool now
-      # generates 2 separate objects for the 2 libraries.  These two
-      # compilations output dependencies in $dir.libs/$base.o.d and
-      # in $dir$base.o.d.  We have to check for both files, because
-      # one of the two compilations can be disabled.  We should prefer
-      # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
-      # automatically cleaned when .libs/ is deleted, while ignoring
-      # the former would cause a distcleancheck panic.
-      tmpdepfile1=$dir.libs/$base.lo.d   # libtool 1.4
-      tmpdepfile2=$dir$base.o.d          # libtool 1.5
-      tmpdepfile3=$dir.libs/$base.o.d    # libtool 1.5
-      tmpdepfile4=$dir.libs/$base.d      # Compaq CCC V6.2-504
       "$@" -Wc,-MD
    else
-      tmpdepfile1=$dir$base.o.d
-      tmpdepfile2=$dir$base.d
-      tmpdepfile3=$dir$base.d
-      tmpdepfile4=$dir$base.d
       "$@" -MD
    fi
 
    stat=$?
    if test $stat -eq 0; then :
    else
-      rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
+      rm -f "$tmpdepfile1" "$tmpdepfile2"
       exit $stat
    fi
 
-   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
+   if test -f "$tmpdepfile1"; then
-   do
+      tmpdepfile="$tmpdepfile1"
-     test -f "$tmpdepfile" && break
+   else
-   done
+      tmpdepfile="$tmpdepfile2"
+   fi
    if test -f "$tmpdepfile"; then
       sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
-      # That's a tab and a space in the [].
+      # That's a space and a tab in the [].
-      sed -e 's,^.*\.[a-z]*:[	 ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
+      sed -e 's,^.*\.[a-z]*:[ 	]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
    else
       echo "#dummy" > "$depfile"
    fi
@@ -411,42 +240,34 @@ tru64)
 
 dashmstdout)
   # Important note: in order to support this mode, a compiler *must*
-  # always write the preprocessed file to stdout, regardless of -o.
+  # always write the proprocessed file to stdout, regardless of -o,
-  "$@" || exit $?
+  # because we must use -o when running libtool.
-
+  test -z "$dashmflag" && dashmflag=-M
-  # Remove the call to Libtool.
+  ( IFS=" "
-  if test "$libtool" = yes; then
+    case " $* " in
-    while test "X$1" != 'X--mode=compile'; do
+    *" --mode=compile "*) # this is libtool, let us make it quiet
-      shift
+      for arg
-    done
+      do # cycle over the arguments
-    shift
+        case "$arg" in
-  fi
+	"--mode=compile")
-
+	  # insert --quiet before "--mode=compile"
-  # Remove `-o $object'.
+	  set fnord "$@" --quiet
-  IFS=" "
+	  shift # fnord
-  for arg
+	  ;;
-  do
+	esac
-    case $arg in
+	set fnord "$@" "$arg"
-    -o)
+	shift # fnord
-      shift
+	shift # "$arg"
-      ;;
+      done
-    $object)
-      shift
-      ;;
-    *)
-      set fnord "$@" "$arg"
-      shift # fnord
-      shift # $arg
       ;;
     esac
-  done
+    "$@" $dashmflag | sed 's:^[^:]*\:[ 	]*:'"$object"'\: :' > "$tmpdepfile"
-
+  ) &
-  test -z "$dashmflag" && dashmflag=-M
+  proc=$!
-  # Require at least two characters before searching for `:'
+  "$@"
-  # in the target name.  This is to cope with DOS-style filenames:
+  stat=$?
-  # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
+  wait "$proc"
-  "$@" $dashmflag |
+  if test "$stat" != 0; then exit $stat; fi
-    sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
   rm -f "$depfile"
   cat < "$tmpdepfile" > "$depfile"
   tr ' ' '
@@ -464,47 +285,36 @@ dashXmstdout)
   ;;
 
 makedepend)
-  "$@" || exit $?
-  # Remove any Libtool call
-  if test "$libtool" = yes; then
-    while test "X$1" != 'X--mode=compile'; do
-      shift
-    done
-    shift
-  fi
   # X makedepend
-  shift
+  (
-  cleared=no eat=no
+    shift
-  for arg
+    cleared=no
-  do
+    for arg in "$@"; do
-    case $cleared in
+      case $cleared in no)
-    no)
+        set ""; shift
-      set ""; shift
+	cleared=yes
-      cleared=yes ;;
+      esac
-    esac
+      case "$arg" in
-    if test $eat = yes; then
+        -D*|-I*)
-      eat=no
+	  set fnord "$@" "$arg"; shift;;
-      continue
+	-*)
-    fi
+	  ;;
-    case "$arg" in
+	*)
-    -D*|-I*)
+	  set fnord "$@" "$arg"; shift;;
-      set fnord "$@" "$arg"; shift ;;
+      esac
-    # Strip any option that makedepend may not understand.  Remove
+    done
-    # the object too, otherwise makedepend will parse it as a source file.
+    obj_suffix="`echo $object | sed 's/^.*\././'`"
-    -arch)
+    touch "$tmpdepfile"
-      eat=yes ;;
+    ${MAKEDEPEND-makedepend} 2>/dev/null -o"$obj_suffix" -f"$tmpdepfile" "$@"
-    -*|$object)
+  ) &
-      ;;
+  proc=$!
-    *)
+  "$@"
-      set fnord "$@" "$arg"; shift ;;
+  stat=$?
-    esac
+  wait "$proc"
-  done
+  if test "$stat" != 0; then exit $stat; fi
-  obj_suffix=`echo "$object" | sed 's/^.*\././'`
-  touch "$tmpdepfile"
-  ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
   rm -f "$depfile"
   cat < "$tmpdepfile" > "$depfile"
-  sed '1,2d' "$tmpdepfile" | tr ' ' '
+  tail +3 "$tmpdepfile" | tr ' ' '
 ' | \
 ## Some versions of the HPUX 10.20 sed can't process this invocation
 ## correctly.  Breaking it into two sed invocations is a workaround.
@@ -514,40 +324,35 @@ makedepend)
 
 cpp)
   # Important note: in order to support this mode, a compiler *must*
-  # always write the preprocessed file to stdout.
+  # always write the proprocessed file to stdout, regardless of -o,
-  "$@" || exit $?
+  # because we must use -o when running libtool.
-
+  ( IFS=" "
-  # Remove the call to Libtool.
+    case " $* " in
-  if test "$libtool" = yes; then
+    *" --mode=compile "*)
-    while test "X$1" != 'X--mode=compile'; do
+      for arg
-      shift
+      do # cycle over the arguments
-    done
+        case $arg in
-    shift
+	"--mode=compile")
-  fi
+	  # insert --quiet before "--mode=compile"
-
+	  set fnord "$@" --quiet
-  # Remove `-o $object'.
+	  shift # fnord
-  IFS=" "
+	  ;;
-  for arg
+	esac
-  do
+	set fnord "$@" "$arg"
-    case $arg in
+	shift # fnord
-    -o)
+	shift # "$arg"
-      shift
+      done
-      ;;
-    $object)
-      shift
-      ;;
-    *)
-      set fnord "$@" "$arg"
-      shift # fnord
-      shift # $arg
       ;;
     esac
-  done
+    "$@" -E |
-
+    sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
-  "$@" -E |
-    sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
-       -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
     sed '$ s: \\$::' > "$tmpdepfile"
+  ) &
+  proc=$!
+  "$@"
+  stat=$?
+  wait "$proc"
+  if test "$stat" != 0; then exit $stat; fi
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
   cat < "$tmpdepfile" >> "$depfile"
@@ -557,56 +362,42 @@ cpp)
 
 msvisualcpp)
   # Important note: in order to support this mode, a compiler *must*
-  # always write the preprocessed file to stdout.
+  # always write the proprocessed file to stdout, regardless of -o,
-  "$@" || exit $?
+  # because we must use -o when running libtool.
-
+  ( IFS=" "
-  # Remove the call to Libtool.
+    case " $* " in
-  if test "$libtool" = yes; then
+    *" --mode=compile "*)
-    while test "X$1" != 'X--mode=compile'; do
+      for arg
-      shift
+      do # cycle over the arguments
-    done
+        case $arg in
-    shift
+	"--mode=compile")
-  fi
+	  # insert --quiet before "--mode=compile"
-
+	  set fnord "$@" --quiet
-  IFS=" "
+	  shift # fnord
-  for arg
+	  ;;
-  do
+	esac
-    case "$arg" in
-    -o)
-      shift
-      ;;
-    $object)
-      shift
-      ;;
-    "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
-	set fnord "$@"
-	shift
-	shift
-	;;
-    *)
 	set fnord "$@" "$arg"
-	shift
+	shift # fnord
-	shift
+	shift # "$arg"
-	;;
+      done
+      ;;
     esac
-  done
+    "$@" -E |
-  "$@" -E 2>/dev/null |
+    sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
-  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
+  ) &
+  proc=$!
+  "$@"
+  stat=$?
+  wait "$proc"
+  if test "$stat" != 0; then exit $stat; fi
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
-  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::	\1 \\:p' >> "$depfile"
+  . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::	\1 \\:p' >> "$depfile"
   echo "	" >> "$depfile"
-  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
+  . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
-msvcmsys)
-  # This case exists only to let depend.m4 do its work.  It works by
-  # looking at the text of this script.  This case will never be run,
-  # since it is checked for above.
-  exit 1
-  ;;
-
 none)
   exec "$@"
   ;;
@@ -618,13 +409,3 @@ none)
 esac
 
 exit 0
-
-# Local Variables:
-# mode: shell-script
-# sh-indentation: 2
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "scriptversion="
-# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
-# time-stamp-end: "; # UTC"
-# End:

example.c

@@ -2,15 +2,15 @@
 #if 0 /* in case someone actually tries to compile this */
 
 /* example.c - an example of using libpng
- * Last changed in libpng 1.5.2 [March 31, 2011]
+ * Last changed in libpng 1.2.1 December 7, 2001.
  * This file has been placed in the public domain by the authors.
- * Maintained 1998-2011 Glenn Randers-Pehrson
+ * Maintained 1998-2007 Glenn Randers-Pehrson
  * Maintained 1996, 1997 Andreas Dilger)
  * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  */
 
 /* This is an example of how to use libpng to read and write PNG files.
- * The file libpng-manual.txt is much more verbose then this.  If you have not
+ * The file libpng.txt is much more verbose then this.  If you have not
  * read it, do so first.  This was designed to be a starting point of an
  * implementation.  This is not officially part of libpng, is hereby placed
  * in the public domain, and therefore does not require a copyright notice.
@@ -31,7 +31,7 @@
   */
 
 #ifndef png_jmpbuf
-#  define png_jmpbuf(png_ptr) ((png_ptr)->png_jmpbuf)
+#  define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
 #endif
 
 /* Check to see if a file is a PNG file using png_sig_cmp().  png_sig_cmp()
@@ -91,15 +91,14 @@ void read_png(char *file_name)  /* We need to open the file */
 
    if ((fp = fopen(file_name, "rb")) == NULL)
       return (ERROR);
-
 #else no_open_file /* prototype 2 */
-void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
+void read_png(FILE *fp, unsigned int sig_read)  /* file is already open */
 {
    png_structp png_ptr;
    png_infop info_ptr;
    png_uint_32 width, height;
    int bit_depth, color_type, interlace_type;
-#endif no_open_file /* Only use one prototype! */
+#endif no_open_file /* only use one prototype! */
 
    /* Create and initialize the png_struct with the desired error handler
     * functions.  If you want to use the default stderr and longjump method,
@@ -121,7 +120,7 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
    if (info_ptr == NULL)
    {
       fclose(fp);
-      png_destroy_read_struct(&png_ptr, NULL, NULL);
+      png_destroy_read_struct(&png_ptr, png_infopp_NULL, png_infopp_NULL);
       return (ERROR);
    }
 
@@ -133,7 +132,7 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
    if (setjmp(png_jmpbuf(png_ptr)))
    {
       /* Free all of the memory associated with the png_ptr and info_ptr */
-      png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
+      png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL);
       fclose(fp);
       /* If we get here, we had a problem reading the file */
       return (ERROR);
@@ -160,12 +159,11 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
     * If you have enough memory to read in the entire image at once,
     * and you need to specify only transforms that can be controlled
     * with one of the PNG_TRANSFORM_* bits (this presently excludes
-    * quantizing, filling, setting background, and doing gamma
+    * dithering, filling, setting background, and doing gamma
     * adjustment), then you can read the entire image (including
     * pixels) into the info structure with this call:
     */
-   png_read_png(png_ptr, info_ptr, png_transforms, NULL);
+   png_read_png(png_ptr, info_ptr, png_transforms, png_voidp_NULL);
-
 #else
    /* OK, you're doing it the hard way, with the lower-level functions */
 
@@ -175,15 +173,15 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
    png_read_info(png_ptr, info_ptr);
 
    png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
-       &interlace_type, NULL, NULL);
+       &interlace_type, int_p_NULL, int_p_NULL);
 
-   /* Set up the data transformations you want.  Note that these are all
+/* Set up the data transformations you want.  Note that these are all
-    * optional.  Only call them if you want/need them.  Many of the
+ * optional.  Only call them if you want/need them.  Many of the
-    * transformations only work on specific types of images, and many
+ * transformations only work on specific types of images, and many
-    * are mutually exclusive.
+ * are mutually exclusive.
-    */
+ */
 
-   /* Tell libpng to strip 16 bit/color files down to 8 bits/color */
+   /* tell libpng to strip 16 bit/color files down to 8 bits/color */
    png_set_strip_16(png_ptr);
 
    /* Strip alpha bytes from the input data without combining with the
@@ -206,7 +204,7 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
 
    /* Expand grayscale images to the full 8 bits from 1, 2, or 4 bits/pixel */
    if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
-      png_set_expand_gray_1_2_4_to_8(png_ptr);
+      png_set_gray_1_2_4_to_8(png_ptr);
 
    /* Expand paletted or RGB images with transparency to full alpha channels
     * so the data will be available as RGBA quartets.
@@ -230,11 +228,10 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
       png_set_background(png_ptr, &my_background,
                          PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
 
-   /* Some suggestions as to how to get a screen gamma value
+   /* Some suggestions as to how to get a screen gamma value */
-    *
+
-    * Note that screen gamma is the display_exponent, which includes
+   /* Note that screen gamma is the display_exponent, which includes
-    * the CRT_exponent and any correction for viewing conditions
+    * the CRT_exponent and any correction for viewing conditions */
-    */
    if (/* We have a user-defined screen gamma value */)
    {
       screen_gamma = user-defined screen_gamma;
@@ -247,7 +244,7 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
    /* If we don't have another value */
    else
    {
-      screen_gamma = 2.2;  /* A good guess for a PC monitor in a dimly
+      screen_gamma = 2.2;  /* A good guess for a PC monitors in a dimly
                               lit room */
       screen_gamma = 1.7 or 1.0;  /* A good guess for Mac systems */
    }
@@ -271,8 +268,7 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
          png_set_gamma(png_ptr, screen_gamma, 0.45455);
    }
 
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
+   /* Dither RGB files down to 8 bit palette or reduce palettes
-   /* Quantize RGB files down to 8 bit palette or reduce palettes
     * to the number of colors available on your screen.
     */
    if (color_type & PNG_COLOR_MASK_COLOR)
@@ -281,13 +277,13 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
       png_colorp palette;
 
       /* This reduces the image to the application supplied palette */
-      if (/* We have our own palette */)
+      if (/* we have our own palette */)
       {
-         /* An array of colors to which the image should be quantized */
+         /* An array of colors to which the image should be dithered */
          png_color std_color_cube[MAX_SCREEN_COLORS];
 
-         png_set_quantize(png_ptr, std_color_cube, MAX_SCREEN_COLORS,
+         png_set_dither(png_ptr, std_color_cube, MAX_SCREEN_COLORS,
-            MAX_SCREEN_COLORS, NULL, 0);
+            MAX_SCREEN_COLORS, png_uint_16p_NULL, 0);
       }
       /* This reduces the image to the palette supplied in the file */
       else if (png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette))
@@ -296,13 +292,12 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
 
          png_get_hIST(png_ptr, info_ptr, &histogram);
 
-         png_set_quantize(png_ptr, palette, num_palette,
+         png_set_dither(png_ptr, palette, num_palette,
                         max_screen_colors, histogram, 0);
       }
    }
-#endif /* PNG_READ_QUANTIZE_SUPPORTED */
 
-   /* Invert monochrome files to have 0 as white and 1 as black */
+   /* invert monochrome files to have 0 as white and 1 as black */
    png_set_invert_mono(png_ptr);
 
    /* If you want to shift the pixel values from the range [0,255] or
@@ -311,20 +306,20 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
     */
    if (png_get_valid(png_ptr, info_ptr, PNG_INFO_sBIT))
    {
-      png_color_8p sig_bit_p;
+      png_color_8p sig_bit;
 
-      png_get_sBIT(png_ptr, info_ptr, &sig_bit_p);
+      png_get_sBIT(png_ptr, info_ptr, &sig_bit);
-      png_set_shift(png_ptr, sig_bit_p);
+      png_set_shift(png_ptr, sig_bit);
    }
 
-   /* Flip the RGB pixels to BGR (or RGBA to BGRA) */
+   /* flip the RGB pixels to BGR (or RGBA to BGRA) */
    if (color_type & PNG_COLOR_MASK_COLOR)
       png_set_bgr(png_ptr);
 
-   /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */
+   /* swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */
    png_set_swap_alpha(png_ptr);
 
-   /* Swap bytes of 16 bit files to least significant byte first */
+   /* swap bytes of 16 bit files to least significant byte first */
    png_set_swap(png_ptr);
 
    /* Add filler (or alpha) byte (before/after each RGB triplet) */
@@ -347,13 +342,11 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
    /* The easiest way to read the image: */
    png_bytep row_pointers[height];
 
-   /* Clear the pointer array */
-   for (row = 0; row < height; row++)
-      row_pointers[row] = NULL;
-
    for (row = 0; row < height; row++)
+   {
       row_pointers[row] = png_malloc(png_ptr, png_get_rowbytes(png_ptr,
          info_ptr));
+   }
 
    /* Now it's time to read the image.  One of these methods is REQUIRED */
 #ifdef entire /* Read the entire image in one go */
@@ -367,43 +360,44 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
 #ifdef single /* Read the image a single row at a time */
       for (y = 0; y < height; y++)
       {
-         png_read_rows(png_ptr, &row_pointers[y], NULL, 1);
+         png_read_rows(png_ptr, &row_pointers[y], png_bytepp_NULL, 1);
       }
 
 #else no_single /* Read the image several rows at a time */
       for (y = 0; y < height; y += number_of_rows)
       {
 #ifdef sparkle /* Read the image using the "sparkle" effect. */
-         png_read_rows(png_ptr, &row_pointers[y], NULL,
+         png_read_rows(png_ptr, &row_pointers[y], png_bytepp_NULL,
             number_of_rows);
 #else no_sparkle /* Read the image using the "rectangle" effect */
-         png_read_rows(png_ptr, NULL, &row_pointers[y],
+         png_read_rows(png_ptr, png_bytepp_NULL, &row_pointers[y],
             number_of_rows);
-#endif no_sparkle /* Use only one of these two methods */
+#endif no_sparkle /* use only one of these two methods */
       }
 
-      /* If you want to display the image after every pass, do so here */
+      /* if you want to display the image after every pass, do
-#endif no_single /* Use only one of these two methods */
+         so here */
+#endif no_single /* use only one of these two methods */
    }
-#endif no_entire /* Use only one of these two methods */
+#endif no_entire /* use only one of these two methods */
 
-   /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */
+   /* read rest of file, and get additional chunks in info_ptr - REQUIRED */
    png_read_end(png_ptr, info_ptr);
 #endif hilevel
 
    /* At this point you have read the entire image */
 
-   /* Clean up after the read, and free any memory allocated - REQUIRED */
+   /* clean up after the read, and free any memory allocated - REQUIRED */
-   png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
+   png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL);
 
-   /* Close the file */
+   /* close the file */
    fclose(fp);
 
-   /* That's it */
+   /* that's it */
    return (OK);
 }
 
-/* Progressively read a file */
+/* progressively read a file */
 
 int
 initialize_png_reader(png_structp *png_ptr, png_infop *info_ptr)
@@ -427,13 +421,13 @@ initialize_png_reader(png_structp *png_ptr, png_infop *info_ptr)
 
    if (*info_ptr == NULL)
    {
-      png_destroy_read_struct(png_ptr, info_ptr, NULL);
+      png_destroy_read_struct(png_ptr, info_ptr, png_infopp_NULL);
       return (ERROR);
    }
 
    if (setjmp(png_jmpbuf((*png_ptr))))
    {
-      png_destroy_read_struct(png_ptr, info_ptr, NULL);
+      png_destroy_read_struct(png_ptr, info_ptr, png_infopp_NULL);
       return (ERROR);
    }
 
@@ -462,13 +456,13 @@ process_data(png_structp *png_ptr, png_infop *info_ptr,
    if (setjmp(png_jmpbuf((*png_ptr))))
    {
       /* Free the png_ptr and info_ptr memory on error */
-      png_destroy_read_struct(png_ptr, info_ptr, NULL);
+      png_destroy_read_struct(png_ptr, info_ptr, png_infopp_NULL);
       return (ERROR);
    }
 
    /* This one's new also.  Simply give it chunks of data as
     * they arrive from the data stream (in order, of course).
-    * On segmented machines, don't give it any more than 64K.
+    * On Segmented machines, don't give it any more than 64K.
     * The library seems to run fine with sizes of 4K, although
     * you can give it much less if necessary (I assume you can
     * give it chunks of 1 byte, but I haven't tried with less
@@ -482,84 +476,86 @@ process_data(png_structp *png_ptr, png_infop *info_ptr,
 
 info_callback(png_structp png_ptr, png_infop info)
 {
-   /* Do any setup here, including setting any of the transformations
+/* do any setup here, including setting any of the transformations
-    * mentioned in the Reading PNG files section.  For now, you _must_
+ * mentioned in the Reading PNG files section.  For now, you _must_
-    * call either png_start_read_image() or png_read_update_info()
+ * call either png_start_read_image() or png_read_update_info()
-    * after all the transformations are set (even if you don't set
+ * after all the transformations are set (even if you don't set
-    * any).  You may start getting rows before png_process_data()
+ * any).  You may start getting rows before png_process_data()
-    * returns, so this is your last chance to prepare for that.
+ * returns, so this is your last chance to prepare for that.
-    */
+ */
 }
 
 row_callback(png_structp png_ptr, png_bytep new_row,
    png_uint_32 row_num, int pass)
 {
-   /*
+/*
-    * This function is called for every row in the image.  If the
+ * This function is called for every row in the image.  If the
-    * image is interlaced, and you turned on the interlace handler,
+ * image is interlaced, and you turned on the interlace handler,
-    * this function will be called for every row in every pass.
+ * this function will be called for every row in every pass.
-    *
+ *
-    * In this function you will receive a pointer to new row data from
+ * In this function you will receive a pointer to new row data from
-    * libpng called new_row that is to replace a corresponding row (of
+ * libpng called new_row that is to replace a corresponding row (of
-    * the same data format) in a buffer allocated by your application.
+ * the same data format) in a buffer allocated by your application.
-    *
+ *
-    * The new row data pointer "new_row" may be NULL, indicating there is
+ * The new row data pointer new_row may be NULL, indicating there is
-    * no new data to be replaced (in cases of interlace loading).
+ * no new data to be replaced (in cases of interlace loading).
-    *
+ *
-    * If new_row is not NULL then you need to call
+ * If new_row is not NULL then you need to call
-    * png_progressive_combine_row() to replace the corresponding row as
+ * png_progressive_combine_row() to replace the corresponding row as
-    * shown below:
+ * shown below:
-    */
+ */
+   /* Check if row_num is in bounds. */
+   if((row_num >= 0) && (row_num < height))
+   {
+     /* Get pointer to corresponding row in our
+      * PNG read buffer.
+      */
+     png_bytep old_row = ((png_bytep *)our_data)[row_num];
 
-   /* Get pointer to corresponding row in our
+     /* If both rows are allocated then copy the new row
-    * PNG read buffer.
+      * data to the corresponding row data.
-    */
+      */
-   png_bytep old_row = ((png_bytep *)our_data)[row_num];
+     if((old_row != NULL) && (new_row != NULL))
-
+     png_progressive_combine_row(png_ptr, old_row, new_row);
-   /* If both rows are allocated then copy the new row
+   }
-    * data to the corresponding row data.
+/*
-    */
+ * The rows and passes are called in order, so you don't really
-   if ((old_row != NULL) && (new_row != NULL))
+ * need the row_num and pass, but I'm supplying them because it
-   png_progressive_combine_row(png_ptr, old_row, new_row);
+ * may make your life easier.
-
+ *
-   /*
+ * For the non-NULL rows of interlaced images, you must call
-    * The rows and passes are called in order, so you don't really
+ * png_progressive_combine_row() passing in the new row and the
-    * need the row_num and pass, but I'm supplying them because it
+ * old row, as demonstrated above.  You can call this function for
-    * may make your life easier.
+ * NULL rows (it will just return) and for non-interlaced images
-    *
+ * (it just does the png_memcpy for you) if it will make the code
-    * For the non-NULL rows of interlaced images, you must call
+ * easier.  Thus, you can just do this for all cases:
-    * png_progressive_combine_row() passing in the new row and the
+ */
-    * old row, as demonstrated above.  You can call this function for
-    * NULL rows (it will just return) and for non-interlaced images
-    * (it just does the png_memcpy for you) if it will make the code
-    * easier.  Thus, you can just do this for all cases:
-    */
 
    png_progressive_combine_row(png_ptr, old_row, new_row);
 
-   /* where old_row is what was displayed for previous rows.  Note
+/* where old_row is what was displayed for previous rows.  Note
-    * that the first pass (pass == 0 really) will completely cover
+ * that the first pass (pass == 0 really) will completely cover
-    * the old row, so the rows do not have to be initialized.  After
+ * the old row, so the rows do not have to be initialized.  After
-    * the first pass (and only for interlaced images), you will have
+ * the first pass (and only for interlaced images), you will have
-    * to pass the current row as new_row, and the function will combine
+ * to pass the current row as new_row, and the function will combine
-    * the old row and the new row.
+ * the old row and the new row.
-    */
+ */
 }
 
 end_callback(png_structp png_ptr, png_infop info)
 {
-   /* This function is called when the whole image has been read,
+/* this function is called when the whole image has been read,
-    * including any chunks after the image (up to and including
+ * including any chunks after the image (up to and including
-    * the IEND).  You will usually have the same info chunk as you
+ * the IEND).  You will usually have the same info chunk as you
-    * had in the header, although some data may have been added
+ * had in the header, although some data may have been added
-    * to the comments and time fields.
+ * to the comments and time fields.
-    *
+ *
-    * Most people won't do much here, perhaps setting a flag that
+ * Most people won't do much here, perhaps setting a flag that
-    * marks the image as finished.
+ * marks the image as finished.
-    */
+ */
 }
 
-/* Write a png file */
+/* write a png file */
 void write_png(char *file_name /* , ... other image information ... */)
 {
    FILE *fp;
@@ -567,7 +563,7 @@ void write_png(char *file_name /* , ... other image information ... */)
    png_infop info_ptr;
    png_colorp palette;
 
-   /* Open the file */
+   /* open the file */
    fp = fopen(file_name, "wb");
    if (fp == NULL)
       return (ERROR);
@@ -592,7 +588,7 @@ void write_png(char *file_name /* , ... other image information ... */)
    if (info_ptr == NULL)
    {
       fclose(fp);
-      png_destroy_write_struct(&png_ptr,  NULL);
+      png_destroy_write_struct(&png_ptr,  png_infopp_NULL);
       return (ERROR);
    }
 
@@ -601,34 +597,30 @@ void write_png(char *file_name /* , ... other image information ... */)
     */
    if (setjmp(png_jmpbuf(png_ptr)))
    {
-      /* If we get here, we had a problem writing the file */
+      /* If we get here, we had a problem reading the file */
       fclose(fp);
       png_destroy_write_struct(&png_ptr, &info_ptr);
       return (ERROR);
    }
 
    /* One of the following I/O initialization functions is REQUIRED */
-
 #ifdef streams /* I/O initialization method 1 */
-   /* Set up the output control if you are using standard C streams */
+   /* set up the output control if you are using standard C streams */
    png_init_io(png_ptr, fp);
-
 #else no_streams /* I/O initialization method 2 */
-   /* If you are using replacement write functions, instead of calling
+   /* If you are using replacement read functions, instead of calling
-    * png_init_io() here you would call
+    * png_init_io() here you would call */
-    */
    png_set_write_fn(png_ptr, (void *)user_io_ptr, user_write_fn,
       user_IO_flush_function);
    /* where user_io_ptr is a structure you want available to the callbacks */
-#endif no_streams /* Only use one initialization method */
+#endif no_streams /* only use one initialization method */
 
 #ifdef hilevel
    /* This is the easy way.  Use it if you already have all the
-    * image info living in the structure.  You could "|" many
+    * image info living info in the structure.  You could "|" many
     * PNG_TRANSFORM flags into the png_transforms integer here.
     */
-   png_write_png(png_ptr, info_ptr, png_transforms, NULL);
+   png_write_png(png_ptr, info_ptr, png_transforms, png_voidp_NULL);
-
 #else
    /* This is the hard way */
 
@@ -643,31 +635,25 @@ void write_png(char *file_name /* , ... other image information ... */)
    png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, PNG_COLOR_TYPE_???,
       PNG_INTERLACE_????, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
 
-   /* Set the palette if there is one.  REQUIRED for indexed-color images */
+   /* set the palette if there is one.  REQUIRED for indexed-color images */
    palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH
-             * png_sizeof(png_color));
+             * png_sizeof (png_color));
-   /* ... Set palette colors ... */
+   /* ... set palette colors ... */
    png_set_PLTE(png_ptr, info_ptr, palette, PNG_MAX_PALETTE_LENGTH);
    /* You must not free palette here, because png_set_PLTE only makes a link to
-    * the palette that you malloced.  Wait until you are about to destroy
+      the palette that you malloced.  Wait until you are about to destroy
-    * the png structure.
+      the png structure. */
-    */
 
-   /* Optional significant bit (sBIT) chunk */
+   /* optional significant bit chunk */
-   png_color_8 sig_bit;
+   /* if we are dealing with a grayscale image then */
-
-   /* If we are dealing with a grayscale image then */
    sig_bit.gray = true_bit_depth;
-
+   /* otherwise, if we are dealing with a color image then */
-   /* Otherwise, if we are dealing with a color image then */
    sig_bit.red = true_red_bit_depth;
    sig_bit.green = true_green_bit_depth;
    sig_bit.blue = true_blue_bit_depth;
-
+   /* if the image has an alpha channel then */
-   /* If the image has an alpha channel then */
    sig_bit.alpha = true_alpha_bit_depth;
-
+   png_set_sBIT(png_ptr, info_ptr, sig_bit);
-   png_set_sBIT(png_ptr, info_ptr, &sig_bit);
 
 
    /* Optional gamma chunk is strongly suggested if you have any guess
@@ -679,29 +665,22 @@ void write_png(char *file_name /* , ... other image information ... */)
    text_ptr[0].key = "Title";
    text_ptr[0].text = "Mona Lisa";
    text_ptr[0].compression = PNG_TEXT_COMPRESSION_NONE;
-   text_ptr[0].itxt_length = 0;
-   text_ptr[0].lang = NULL;
-   text_ptr[0].lang_key = NULL;
    text_ptr[1].key = "Author";
    text_ptr[1].text = "Leonardo DaVinci";
    text_ptr[1].compression = PNG_TEXT_COMPRESSION_NONE;
-   text_ptr[1].itxt_length = 0;
-   text_ptr[1].lang = NULL;
-   text_ptr[1].lang_key = NULL;
    text_ptr[2].key = "Description";
    text_ptr[2].text = "<long text>";
    text_ptr[2].compression = PNG_TEXT_COMPRESSION_zTXt;
-   text_ptr[2].itxt_length = 0;
+#ifdef PNG_iTXt_SUPPORTED
+   text_ptr[0].lang = NULL;
+   text_ptr[1].lang = NULL;
    text_ptr[2].lang = NULL;
-   text_ptr[2].lang_key = NULL;
+#endif
    png_set_text(png_ptr, info_ptr, text_ptr, 3);
 
-   /* Other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs */
+   /* other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs, */
-
+   /* note that if sRGB is present the gAMA and cHRM chunks must be ignored
-   /* Note that if sRGB is present the gAMA and cHRM chunks must be ignored
+    * on read and must be written in accordance with the sRGB profile */
-    * on read and, if your application chooses to write them, they must
-    * be written in accordance with the sRGB profile
-    */
 
    /* Write the file header information.  REQUIRED */
    png_write_info(png_ptr, info_ptr);
@@ -713,7 +692,7 @@ void write_png(char *file_name /* , ... other image information ... */)
     *   write_my_chunk();
     *   png_write_info(png_ptr, info_ptr);
     *
-    * However, given the level of known- and unknown-chunk support in 1.2.0
+    * However, given the level of known- and unknown-chunk support in 1.1.0
     * and up, this should no longer be necessary.
     */
 
@@ -723,11 +702,11 @@ void write_png(char *file_name /* , ... other image information ... */)
     * at the end.
     */
 
-   /* Set up the transformations you want.  Note that these are
+   /* set up the transformations you want.  Note that these are
     * all optional.  Only call them if you want them.
     */
 
-   /* Invert monochrome pixels */
+   /* invert monochrome pixels */
    png_set_invert_mono(png_ptr);
 
    /* Shift the pixels up to a legal bit depth and fill in
@@ -735,10 +714,10 @@ void write_png(char *file_name /* , ... other image information ... */)
     */
    png_set_shift(png_ptr, &sig_bit);
 
-   /* Pack pixels into bytes */
+   /* pack pixels into bytes */
    png_set_packing(png_ptr);
 
-   /* Swap location of alpha bytes from ARGB to RGBA */
+   /* swap location of alpha bytes from ARGB to RGBA */
    png_set_swap_alpha(png_ptr);
 
    /* Get rid of filler (OR ALPHA) bytes, pack XRGB/RGBX/ARGB/RGBA into
@@ -746,19 +725,18 @@ void write_png(char *file_name /* , ... other image information ... */)
     */
    png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
 
-   /* Flip BGR pixels to RGB */
+   /* flip BGR pixels to RGB */
    png_set_bgr(png_ptr);
 
-   /* Swap bytes of 16-bit files to most significant byte first */
+   /* swap bytes of 16-bit files to most significant byte first */
    png_set_swap(png_ptr);
 
-   /* Swap bits of 1, 2, 4 bit packed pixel formats */
+   /* swap bits of 1, 2, 4 bit packed pixel formats */
    png_set_packswap(png_ptr);
 
-   /* Turn on interlace handling if you are not using png_write_image() */
+   /* turn on interlace handling if you are not using png_write_image() */
    if (interlacing)
       number_passes = png_set_interlace_handling(png_ptr);
-
    else
       number_passes = 1;
 
@@ -777,14 +755,12 @@ void write_png(char *file_name /* , ... other image information ... */)
      row_pointers[k] = image + k*width*bytes_per_pixel;
 
    /* One of the following output methods is REQUIRED */
-
+#ifdef entire /* write out the entire image data in one call */
-#ifdef entire /* Write out the entire image data in one call */
    png_write_image(png_ptr, row_pointers);
 
-   /* The other way to write the image - deal with interlacing */
+   /* the other way to write the image - deal with interlacing */
-
-#else no_entire /* Write out the image data by one or more scanlines */
 
+#else no_entire /* write out the image data by one or more scanlines */
    /* The number of passes is either 1 for non-interlaced images,
     * or 7 for interlaced images.
     */
@@ -795,12 +771,14 @@ void write_png(char *file_name /* , ... other image information ... */)
 
       /* If you are only writing one row at a time, this works */
       for (y = 0; y < height; y++)
+      {
          png_write_rows(png_ptr, &row_pointers[y], 1);
+      }
    }
-#endif no_entire /* Use only one output method */
+#endif no_entire /* use only one output method */
 
    /* You can write optional chunks like tEXt, zTXt, and tIME at the end
-    * as well.  Shouldn't be necessary in 1.2.0 and up as all the public
+    * as well.  Shouldn't be necessary in 1.1.0 and up as all the public
     * chunks are supported and you can use png_set_unknown_chunks() to
     * register unknown chunks into the info structure to be written out.
     */
@@ -810,33 +788,26 @@ void write_png(char *file_name /* , ... other image information ... */)
 #endif hilevel
 
    /* If you png_malloced a palette, free it here (don't free info_ptr->palette,
-    * as recommended in versions 1.0.5m and earlier of this example; if
+      as recommended in versions 1.0.5m and earlier of this example; if
-    * libpng mallocs info_ptr->palette, libpng will free it).  If you
+      libpng mallocs info_ptr->palette, libpng will free it).  If you
-    * allocated it with malloc() instead of png_malloc(), use free() instead
+      allocated it with malloc() instead of png_malloc(), use free() instead
-    * of png_free().
+      of png_free(). */
-    */
    png_free(png_ptr, palette);
-   palette = NULL;
+   palette=NULL;
 
    /* Similarly, if you png_malloced any data that you passed in with
-    * png_set_something(), such as a hist or trans array, free it here,
+      png_set_something(), such as a hist or trans array, free it here,
-    * when you can be sure that libpng is through with it.
+      when you can be sure that libpng is through with it. */
-    */
    png_free(png_ptr, trans);
-   trans = NULL;
+   trans=NULL;
-   /* Whenever you use png_free() it is a good idea to set the pointer to
-    * NULL in case your application inadvertently tries to png_free() it
-    * again.  When png_free() sees a NULL it returns without action, thus
-    * avoiding the double-free security problem.
-    */
 
-   /* Clean up after the write, and free any memory allocated */
+   /* clean up after the write, and free any memory allocated */
    png_destroy_write_struct(&png_ptr, &info_ptr);
 
-   /* Close the file */
+   /* close the file */
    fclose(fp);
 
-   /* That's it */
+   /* that's it */
    return (OK);
 }
 

install-sh

@@ -1,520 +1,251 @@
 #!/bin/sh
+#
 # install - install a program, script, or datafile
-
+# This comes from X11R5 (mit/util/scripts/install.sh).
-scriptversion=2009-04-28.21; # UTC
-
-# This originates from X11R5 (mit/util/scripts/install.sh), which was
-# later released in X11R6 (xc/config/util/install.sh) with the
-# following copyright and license.
 #
-# Copyright (C) 1994 X Consortium
+# Copyright 1991 by the Massachusetts Institute of Technology
 #
-# Permission is hereby granted, free of charge, to any person obtaining a copy
+# Permission to use, copy, modify, distribute, and sell this software and its
-# of this software and associated documentation files (the "Software"), to
+# documentation for any purpose is hereby granted without fee, provided that
-# deal in the Software without restriction, including without limitation the
+# the above copyright notice appear in all copies and that both that
-# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# copyright notice and this permission notice appear in supporting
-# sell copies of the Software, and to permit persons to whom the Software is
+# documentation, and that the name of M.I.T. not be used in advertising or
-# furnished to do so, subject to the following conditions:
+# publicity pertaining to distribution of the software without specific,
-#
+# written prior permission.  M.I.T. makes no representations about the
-# The above copyright notice and this permission notice shall be included in
+# suitability of this software for any purpose.  It is provided "as is"
-# all copies or substantial portions of the Software.
+# without express or implied warranty.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
-# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
-# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
-# Except as contained in this notice, the name of the X Consortium shall not
-# be used in advertising or otherwise to promote the sale, use or other deal-
-# ings in this Software without prior written authorization from the X Consor-
-# tium.
-#
-#
-# FSF changes to this file are in the public domain.
 #
 # Calling this script install-sh is preferred over install.sh, to prevent
 # `make' implicit rules from creating a file called install from it
 # when there is no Makefile.
 #
 # This script is compatible with the BSD install script, but was written
-# from scratch.
+# from scratch.  It can only install one file at a time, a restriction
+# shared with many OS's install programs.
 
-nl='
-'
-IFS=" ""	$nl"
 
 # set DOITPROG to echo to test this script
 
 # Don't use :- since 4.3BSD and earlier shells don't like it.
-doit=${DOITPROG-}
+doit="${DOITPROG-}"
-if test -z "$doit"; then
-  doit_exec=exec
-else
-  doit_exec=$doit
-fi
 
-# Put in absolute file names if you don't have them in your path;
-# or use environment vars.
 
-chgrpprog=${CHGRPPROG-chgrp}
+# put in absolute paths if you don't have them in your path; or use env. vars.
-chmodprog=${CHMODPROG-chmod}
-chownprog=${CHOWNPROG-chown}
-cmpprog=${CMPPROG-cmp}
-cpprog=${CPPROG-cp}
-mkdirprog=${MKDIRPROG-mkdir}
-mvprog=${MVPROG-mv}
-rmprog=${RMPROG-rm}
-stripprog=${STRIPPROG-strip}
 
-posix_glob='?'
+mvprog="${MVPROG-mv}"
-initialize_posix_glob='
+cpprog="${CPPROG-cp}"
-  test "$posix_glob" != "?" || {
+chmodprog="${CHMODPROG-chmod}"
-    if (set -f) 2>/dev/null; then
+chownprog="${CHOWNPROG-chown}"
-      posix_glob=
+chgrpprog="${CHGRPPROG-chgrp}"
-    else
+stripprog="${STRIPPROG-strip}"
-      posix_glob=:
+rmprog="${RMPROG-rm}"
-    fi
+mkdirprog="${MKDIRPROG-mkdir}"
-  }
-'
 
-posix_mkdir=
+transformbasename=""
-
+transform_arg=""
-# Desired mode of installed file.
+instcmd="$mvprog"
-mode=0755
+chmodcmd="$chmodprog 0755"
-
+chowncmd=""
-chgrpcmd=
+chgrpcmd=""
-chmodcmd=$chmodprog
+stripcmd=""
-chowncmd=
-mvcmd=$mvprog
 rmcmd="$rmprog -f"
-stripcmd=
+mvcmd="$mvprog"
+src=""
+dst=""
+dir_arg=""
 
-src=
+while [ x"$1" != x ]; do
-dst=
+    case $1 in
-dir_arg=
+	-c) instcmd="$cpprog"
-dst_arg=
+	    shift
+	    continue;;
 
-copy_on_change=false
+	-d) dir_arg=true
-no_target_directory=
+	    shift
+	    continue;;
 
-usage="\
+	-m) chmodcmd="$chmodprog $2"
-Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
+	    shift
-   or: $0 [OPTION]... SRCFILES... DIRECTORY
+	    shift
-   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
+	    continue;;
-   or: $0 [OPTION]... -d DIRECTORIES...
 
-In the 1st form, copy SRCFILE to DSTFILE.
+	-o) chowncmd="$chownprog $2"
-In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
+	    shift
-In the 4th, create DIRECTORIES.
+	    shift
+	    continue;;
 
-Options:
+	-g) chgrpcmd="$chgrpprog $2"
-     --help     display this help and exit.
+	    shift
-     --version  display version info and exit.
+	    shift
+	    continue;;
 
-  -c            (ignored)
+	-s) stripcmd="$stripprog"
-  -C            install only if different (preserve the last data modification time)
+	    shift
-  -d            create directories instead of installing files.
+	    continue;;
-  -g GROUP      $chgrpprog installed files to GROUP.
-  -m MODE       $chmodprog installed files to MODE.
-  -o USER       $chownprog installed files to USER.
-  -s            $stripprog installed files.
-  -t DIRECTORY  install into DIRECTORY.
-  -T            report an error if DSTFILE is a directory.
 
-Environment variables override the default commands:
+	-t=*) transformarg=`echo $1 | sed 's/-t=//'`
-  CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
+	    shift
-  RMPROG STRIPPROG
+	    continue;;
-"
 
-while test $# -ne 0; do
+	-b=*) transformbasename=`echo $1 | sed 's/-b=//'`
-  case $1 in
+	    shift
-    -c) ;;
+	    continue;;
 
-    -C) copy_on_change=true;;
+	*)  if [ x"$src" = x ]
-
-    -d) dir_arg=true;;
-
-    -g) chgrpcmd="$chgrpprog $2"
-	shift;;
-
-    --help) echo "$usage"; exit $?;;
-
-    -m) mode=$2
-	case $mode in
-	  *' '* | *'	'* | *'
-'*	  | *'*'* | *'?'* | *'['*)
-	    echo "$0: invalid mode: $mode" >&2
-	    exit 1;;
-	esac
-	shift;;
-
-    -o) chowncmd="$chownprog $2"
-	shift;;
-
-    -s) stripcmd=$stripprog;;
-
-    -t) dst_arg=$2
-	shift;;
-
-    -T) no_target_directory=true;;
-
-    --version) echo "$0 $scriptversion"; exit $?;;
-
-    --)	shift
-	break;;
-
-    -*)	echo "$0: invalid option: $1" >&2
-	exit 1;;
-
-    *)  break;;
-  esac
-  shift
-done
-
-if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
-  # When -d is used, all remaining arguments are directories to create.
-  # When -t is used, the destination is already specified.
-  # Otherwise, the last argument is the destination.  Remove it from $@.
-  for arg
-  do
-    if test -n "$dst_arg"; then
-      # $@ is not empty: it contains at least $arg.
-      set fnord "$@" "$dst_arg"
-      shift # fnord
-    fi
-    shift # arg
-    dst_arg=$arg
-  done
-fi
-
-if test $# -eq 0; then
-  if test -z "$dir_arg"; then
-    echo "$0: no input file specified." >&2
-    exit 1
-  fi
-  # It's OK to call `install-sh -d' without argument.
-  # This can happen when creating conditional directories.
-  exit 0
-fi
-
-if test -z "$dir_arg"; then
-  trap '(exit $?); exit' 1 2 13 15
-
-  # Set umask so as not to create temps with too-generous modes.
-  # However, 'strip' requires both read and write access to temps.
-  case $mode in
-    # Optimize common cases.
-    *644) cp_umask=133;;
-    *755) cp_umask=22;;
-
-    *[0-7])
-      if test -z "$stripcmd"; then
-	u_plus_rw=
-      else
-	u_plus_rw='% 200'
-      fi
-      cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
-    *)
-      if test -z "$stripcmd"; then
-	u_plus_rw=
-      else
-	u_plus_rw=,u+rw
-      fi
-      cp_umask=$mode$u_plus_rw;;
-  esac
-fi
-
-for src
-do
-  # Protect names starting with `-'.
-  case $src in
-    -*) src=./$src;;
-  esac
-
-  if test -n "$dir_arg"; then
-    dst=$src
-    dstdir=$dst
-    test -d "$dstdir"
-    dstdir_status=$?
-  else
-
-    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
-    # might cause directories to be created, which would be especially bad
-    # if $src (and thus $dsttmp) contains '*'.
-    if test ! -f "$src" && test ! -d "$src"; then
-      echo "$0: $src does not exist." >&2
-      exit 1
-    fi
-
-    if test -z "$dst_arg"; then
-      echo "$0: no destination specified." >&2
-      exit 1
-    fi
-
-    dst=$dst_arg
-    # Protect names starting with `-'.
-    case $dst in
-      -*) dst=./$dst;;
-    esac
-
-    # If destination is a directory, append the input filename; won't work
-    # if double slashes aren't ignored.
-    if test -d "$dst"; then
-      if test -n "$no_target_directory"; then
-	echo "$0: $dst_arg: Is a directory" >&2
-	exit 1
-      fi
-      dstdir=$dst
-      dst=$dstdir/`basename "$src"`
-      dstdir_status=0
-    else
-      # Prefer dirname, but fall back on a substitute if dirname fails.
-      dstdir=`
-	(dirname "$dst") 2>/dev/null ||
-	expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
-	     X"$dst" : 'X\(//\)[^/]' \| \
-	     X"$dst" : 'X\(//\)$' \| \
-	     X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
-	echo X"$dst" |
-	    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
-		   s//\1/
-		   q
-		 }
-		 /^X\(\/\/\)[^/].*/{
-		   s//\1/
-		   q
-		 }
-		 /^X\(\/\/\)$/{
-		   s//\1/
-		   q
-		 }
-		 /^X\(\/\).*/{
-		   s//\1/
-		   q
-		 }
-		 s/.*/./; q'
-      `
-
-      test -d "$dstdir"
-      dstdir_status=$?
-    fi
-  fi
-
-  obsolete_mkdir_used=false
-
-  if test $dstdir_status != 0; then
-    case $posix_mkdir in
-      '')
-	# Create intermediate dirs using mode 755 as modified by the umask.
-	# This is like FreeBSD 'install' as of 1997-10-28.
-	umask=`umask`
-	case $stripcmd.$umask in
-	  # Optimize common cases.
-	  *[2367][2367]) mkdir_umask=$umask;;
-	  .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
-
-	  *[0-7])
-	    mkdir_umask=`expr $umask + 22 \
-	      - $umask % 100 % 40 + $umask % 20 \
-	      - $umask % 10 % 4 + $umask % 2
-	    `;;
-	  *) mkdir_umask=$umask,go-w;;
-	esac
-
-	# With -d, create the new directory with the user-specified mode.
-	# Otherwise, rely on $mkdir_umask.
-	if test -n "$dir_arg"; then
-	  mkdir_mode=-m$mode
-	else
-	  mkdir_mode=
-	fi
-
-	posix_mkdir=false
-	case $umask in
-	  *[123567][0-7][0-7])
-	    # POSIX mkdir -p sets u+wx bits regardless of umask, which
-	    # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
-	    ;;
-	  *)
-	    tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
-	    trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
-
-	    if (umask $mkdir_umask &&
-		exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
 	    then
-	      if test -z "$dir_arg" || {
+		src=$1
-		   # Check for POSIX incompatibilities with -m.
-		   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
-		   # other-writeable bit of parent directory when it shouldn't.
-		   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
-		   ls_ld_tmpdir=`ls -ld "$tmpdir"`
-		   case $ls_ld_tmpdir in
-		     d????-?r-*) different_mode=700;;
-		     d????-?--*) different_mode=755;;
-		     *) false;;
-		   esac &&
-		   $mkdirprog -m$different_mode -p -- "$tmpdir" && {
-		     ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
-		     test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
-		   }
-		 }
-	      then posix_mkdir=:
-	      fi
-	      rmdir "$tmpdir/d" "$tmpdir"
 	    else
-	      # Remove any dirs left behind by ancient mkdir implementations.
+		# this colon is to work around a 386BSD /bin/sh bug
-	      rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
+		:
+		dst=$1
 	    fi
-	    trap '' 0;;
+	    shift
-	esac;;
+	    continue;;
     esac
-
-    if
-      $posix_mkdir && (
-	umask $mkdir_umask &&
-	$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
-      )
-    then :
-    else
-
-      # The umask is ridiculous, or mkdir does not conform to POSIX,
-      # or it failed possibly due to a race condition.  Create the
-      # directory the slow way, step by step, checking for races as we go.
-
-      case $dstdir in
-	/*) prefix='/';;
-	-*) prefix='./';;
-	*)  prefix='';;
-      esac
-
-      eval "$initialize_posix_glob"
-
-      oIFS=$IFS
-      IFS=/
-      $posix_glob set -f
-      set fnord $dstdir
-      shift
-      $posix_glob set +f
-      IFS=$oIFS
-
-      prefixes=
-
-      for d
-      do
-	test -z "$d" && continue
-
-	prefix=$prefix$d
-	if test -d "$prefix"; then
-	  prefixes=
-	else
-	  if $posix_mkdir; then
-	    (umask=$mkdir_umask &&
-	     $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
-	    # Don't fail if two instances are running concurrently.
-	    test -d "$prefix" || exit 1
-	  else
-	    case $prefix in
-	      *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
-	      *) qprefix=$prefix;;
-	    esac
-	    prefixes="$prefixes '$qprefix'"
-	  fi
-	fi
-	prefix=$prefix/
-      done
-
-      if test -n "$prefixes"; then
-	# Don't fail if two instances are running concurrently.
-	(umask $mkdir_umask &&
-	 eval "\$doit_exec \$mkdirprog $prefixes") ||
-	  test -d "$dstdir" || exit 1
-	obsolete_mkdir_used=true
-      fi
-    fi
-  fi
-
-  if test -n "$dir_arg"; then
-    { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
-    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
-    { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
-      test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
-  else
-
-    # Make a couple of temp file names in the proper directory.
-    dsttmp=$dstdir/_inst.$$_
-    rmtmp=$dstdir/_rm.$$_
-
-    # Trap to clean up those temp files at exit.
-    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
-
-    # Copy the file name to the temp name.
-    (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
-
-    # and set any options; do chmod last to preserve setuid bits.
-    #
-    # If any of these fail, we abort the whole thing.  If we want to
-    # ignore errors from any of these, just make sure not to ignore
-    # errors from the above "$doit $cpprog $src $dsttmp" command.
-    #
-    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
-    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
-    { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
-    { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
-
-    # If -C, don't bother to copy if it wouldn't change the file.
-    if $copy_on_change &&
-       old=`LC_ALL=C ls -dlL "$dst"	2>/dev/null` &&
-       new=`LC_ALL=C ls -dlL "$dsttmp"	2>/dev/null` &&
-
-       eval "$initialize_posix_glob" &&
-       $posix_glob set -f &&
-       set X $old && old=:$2:$4:$5:$6 &&
-       set X $new && new=:$2:$4:$5:$6 &&
-       $posix_glob set +f &&
-
-       test "$old" = "$new" &&
-       $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
-    then
-      rm -f "$dsttmp"
-    else
-      # Rename the file to the real destination.
-      $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
-
-      # The rename failed, perhaps because mv can't rename something else
-      # to itself, or perhaps because mv is so ancient that it does not
-      # support -f.
-      {
-	# Now remove or move aside any old file at destination location.
-	# We try this two ways since rm can't unlink itself on some
-	# systems and the destination file might be busy for other
-	# reasons.  In this case, the final cleanup might fail but the new
-	# file should still install successfully.
-	{
-	  test ! -f "$dst" ||
-	  $doit $rmcmd -f "$dst" 2>/dev/null ||
-	  { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
-	    { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
-	  } ||
-	  { echo "$0: cannot unlink or rename $dst" >&2
-	    (exit 1); exit 1
-	  }
-	} &&
-
-	# Now rename the file to the real destination.
-	$doit $mvcmd "$dsttmp" "$dst"
-      }
-    fi || exit 1
-
-    trap '' 0
-  fi
 done
 
-# Local variables:
+if [ x"$src" = x ]
-# eval: (add-hook 'write-file-hooks 'time-stamp)
+then
-# time-stamp-start: "scriptversion="
+	echo "install:	no input file specified"
-# time-stamp-format: "%:y-%02m-%02d.%02H"
+	exit 1
-# time-stamp-time-zone: "UTC"
+else
-# time-stamp-end: "; # UTC"
+	true
-# End:
+fi
+
+if [ x"$dir_arg" != x ]; then
+	dst=$src
+	src=""
+	
+	if [ -d $dst ]; then
+		instcmd=:
+		chmodcmd=""
+	else
+		instcmd=mkdir
+	fi
+else
+
+# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
+# might cause directories to be created, which would be especially bad 
+# if $src (and thus $dsttmp) contains '*'.
+
+	if [ -f $src -o -d $src ]
+	then
+		true
+	else
+		echo "install:  $src does not exist"
+		exit 1
+	fi
+	
+	if [ x"$dst" = x ]
+	then
+		echo "install:	no destination specified"
+		exit 1
+	else
+		true
+	fi
+
+# If destination is a directory, append the input filename; if your system
+# does not like double slashes in filenames, you may need to add some logic
+
+	if [ -d $dst ]
+	then
+		dst="$dst"/`basename $src`
+	else
+		true
+	fi
+fi
+
+## this sed command emulates the dirname command
+dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
+
+# Make sure that the destination directory exists.
+#  this part is taken from Noah Friedman's mkinstalldirs script
+
+# Skip lots of stat calls in the usual case.
+if [ ! -d "$dstdir" ]; then
+defaultIFS='	
+'
+IFS="${IFS-${defaultIFS}}"
+
+oIFS="${IFS}"
+# Some sh's can't handle IFS=/ for some reason.
+IFS='%'
+set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'`
+IFS="${oIFS}"
+
+pathcomp=''
+
+while [ $# -ne 0 ] ; do
+	pathcomp="${pathcomp}${1}"
+	shift
+
+	if [ ! -d "${pathcomp}" ] ;
+        then
+		$mkdirprog "${pathcomp}"
+	else
+		true
+	fi
+
+	pathcomp="${pathcomp}/"
+done
+fi
+
+if [ x"$dir_arg" != x ]
+then
+	$doit $instcmd $dst &&
+
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi
+else
+
+# If we're going to rename the final executable, determine the name now.
+
+	if [ x"$transformarg" = x ] 
+	then
+		dstfile=`basename $dst`
+	else
+		dstfile=`basename $dst $transformbasename | 
+			sed $transformarg`$transformbasename
+	fi
+
+# don't allow the sed command to completely eliminate the filename
+
+	if [ x"$dstfile" = x ] 
+	then
+		dstfile=`basename $dst`
+	else
+		true
+	fi
+
+# Make a temp file name in the proper directory.
+
+	dsttmp=$dstdir/#inst.$$#
+
+# Move or copy the file name to the temp name
+
+	$doit $instcmd $src $dsttmp &&
+
+	trap "rm -f ${dsttmp}" 0 &&
+
+# and set any options; do chmod last to preserve setuid bits
+
+# If any of these fail, we abort the whole thing.  If we want to
+# ignore errors from any of these, just make sure not to ignore
+# errors from the above "$doit $instcmd $src $dsttmp" command.
+
+	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi &&
+	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi &&
+	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi &&
+	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi &&
+
+# Now rename the file to the real destination.
+
+	$doit $rmcmd -f $dstdir/$dstfile &&
+	$doit $mvcmd $dsttmp $dstdir/$dstfile 
+
+fi &&
+
+
+exit 0

libpng.pc.in

@@ -1,11 +0,0 @@
-prefix=@prefix@
-exec_prefix=@exec_prefix@
-libdir=@libdir@
-includedir=@includedir@/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
-
-Name: libpng
-Description: Loads and saves PNG files
-Version: @PNGLIB_VERSION@
-Libs: -L${libdir} -lpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
-Libs.private: @LIBS@
-Cflags: -I${includedir}

libpngpf.3

@@ -1,30 +1,274 @@
-.TH LIBPNGPF 3 "March 31, 2011"
+.TH LIBPNGPF 3 "September 26, 2007"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.5.2
+libpng \- Portable Network Graphics (PNG) Reference Library 1.0.29rc2
 (private functions)
 .SH SYNOPSIS
-\fB#include \fI"pngpriv.h"
+\fB#include <png.h>\fP
 
-\fI\fB
+\fBvoid png_build_gamma_table (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fBAs of libpng version \fP\fI1.5.1\fP\fB, this section is no longer \fP\fImaintained\fP\fB, now \fIthat
+\fBvoid png_build_grayscale_palette (int \fP\fIbit_depth\fP\fB, png_colorp \fIpalette\fP\fB);\fP
 
-\fBthe private function prototypes are hidden in pngpriv.h and not \fIaccessible
+\fBvoid png_calculate_crc (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIptr\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
-\fBto applications. Look in pngpriv.h for the prototypes and a short \fIdescription
+\fBvoid png_check_chunk_name (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP
 
-\fBof each \fIfunction.
+\fBpng_size_t png_check_keyword (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charpp \fInew_key\fP\fB);\fP
+
+\fBvoid png_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fImask\fP\fB);\fP
+
+\fBvoid png_correct_palette (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fInum_palette\fP\fB);\fP
+
+\fBint png_crc_error (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBint png_crc_finish (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIskip\fP\fB);\fP
+
+\fBvoid png_crc_read (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuf\fP\fB, png_size_t \fIlength\fP\fB);\fP
+
+\fBpng_voidp png_create_struct (int \fItype\fP\fB);\fP
+
+\fBpng_voidp png_create_struct_2 (int \fP\fItype\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP
+
+\fBpng_charp png_decompress_chunk (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcomp_type\fP\fB, png_charp \fP\fIchunkdata\fP\fB, png_size_t \fP\fIchunklength\fP\fB, png_size_t \fP\fIprefix_length\fP\fB, png_size_t \fI*data_length\fP\fB);\fP
+
+\fBvoid png_destroy_struct (png_voidp \fIstruct_ptr\fP\fB);\fP
+
+\fBvoid png_destroy_struct_2 (png_voidp \fP\fIstruct_ptr\fP\fB, png_free_ptr \fP\fIfree_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP
+
+\fBvoid png_do_background (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fP\fItrans_values\fP\fB, png_color_16p \fP\fIbackground\fP\fB, png_color_16p \fP\fIbackground_1\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_bytep \fP\fIgamma_from_1\fP\fB, png_bytep \fP\fIgamma_to_1\fP\fB, png_uint_16pp \fP\fIgamma_16\fP\fB, png_uint_16pp \fP\fIgamma_16_from_1\fP\fB, png_uint_16pp \fP\fIgamma_16_to_1\fP\fB, int \fIgamma_shift\fP\fB);\fP
+
+\fBvoid png_do_bgr (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fBvoid png_do_chop (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fBvoid png_do_dither (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIpalette_lookup\fP\fB, png_bytep \fIdither_lookup\fP\fB);\fP
+
+\fBvoid png_do_expand (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fItrans_value\fP\fB);\fP
+
+\fBvoid png_do_expand_palette (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_bytep \fP\fItrans\fP\fB, int \fInum_trans\fP\fB);\fP
+
+\fBvoid png_do_gamma (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_uint_16pp \fP\fIgamma_16_table\fP\fB, int \fIgamma_shift\fP\fB);\fP
+
+\fBvoid png_do_gray_to_rgb (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fBvoid png_do_invert (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fBvoid png_do_pack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIbit_depth\fP\fB);\fP
+
+\fBvoid png_do_packswap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fBvoid png_do_read_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, png_uint_32 \fIflags\fP\fB);\fP
+
+\fBvoid png_do_read_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fP\fIpass\fP\fB, png_uint_32 \fItransformations\fP\fB);\fP
+
+\fBvoid png_do_read_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fBvoid png_do_read_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fBvoid png_do_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBint png_do_rgb_to_gray (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fBvoid png_do_shift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIbit_depth\fP\fB);\fP
+
+\fBvoid png_do_strip_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIflags\fP\fB);\fP
+
+\fBvoid png_do_swap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fBvoid png_do_unpack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fBvoid png_do_unshift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIsig_bits\fP\fB);\fP
+
+\fBvoid png_do_write_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fIpass\fP\fB);\fP
+
+\fBvoid png_do_write_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fBvoid png_do_write_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fBvoid png_do_write_transformations (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid *png_far_to_near (png_structp png_ptr,png_voidp \fP\fIptr\fP\fB, int \fIcheck\fP\fB);\fP
+
+\fBvoid png_flush (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_handle_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_IEND (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_iTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_info_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fBvoid png_init_mmx_flags (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_init_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_process_IDAT_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP
+
+\fBvoid png_process_some_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fBvoid png_push_check_crc (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_push_crc_finish (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_push_crc_skip (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_push_fill_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIlength\fP\fB);\fP
+
+\fBvoid png_push_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_push_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_push_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
+
+\fBvoid png_push_have_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fBvoid png_push_have_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fBvoid png_push_have_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIrow\fP\fB);\fP
+
+\fBvoid png_push_process_row (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_push_read_chunk (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fBvoid png_push_read_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fBvoid png_push_read_IDAT (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_push_read_sig (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fBvoid png_push_read_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fBvoid png_push_read_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fBvoid png_push_restore_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP
+
+\fBvoid png_push_save_buffer (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_read_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
+
+\fBvoid png_read_filter_row (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIprev_row\fP\fB, int \fIfilter\fP\fB);\fP
+
+\fBvoid png_read_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_read_push_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_read_start_row (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_read_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fBvoid png_reset_crc (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBint png_set_text_2 (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fItext_ptr\fP\fB, int \fInum_text\fP\fB);\fP
+
+\fBvoid png_write_cHRM (png_structp \fP\fIpng_ptr\fP\fB, double \fP\fIwhite_x\fP\fB, double \fP\fIwhite_y\fP\fB, double \fP\fIred_x\fP\fB, double \fP\fIred_y\fP\fB, double \fP\fIgreen_x\fP\fB, double \fP\fIgreen_y\fP\fB, double \fP\fIblue_x\fP\fB, double \fIblue_y\fP\fB);\fP
+
+\fBvoid png_write_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwhite_x\fP\fB, png_uint_32 \fP\fIwhite_y\fP\fB, png_uint_32 \fP\fIred_x\fP\fB, png_uint_32 \fP\fIred_y\fP\fB, png_uint_32 \fP\fIgreen_x\fP\fB, png_uint_32 \fP\fIgreen_y\fP\fB, png_uint_32 \fP\fIblue_x\fP\fB, png_uint_32 \fIblue_y\fP\fB);\fP
+
+\fBvoid png_write_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
+
+\fBvoid png_write_filtered_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIfiltered_row\fP\fB);\fP
+
+\fBvoid png_write_find_filter (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fIrow_info\fP\fB);\fP
+
+\fBvoid png_write_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_write_gAMA (png_structp \fP\fIpng_ptr\fP\fB, double \fIfile_gamma\fP\fB);\fP
+
+\fBvoid png_write_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIint_file_gamma\fP\fB);\fP
+
+\fBvoid png_write_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_uint_16p \fP\fIhist\fP\fB, int \fInum_hist\fP\fB);\fP
+
+\fBvoid png_write_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIname\fP\fB, int \fP\fIcompression_type\fP\fB, png_charp \fP\fIprofile\fP\fB, int \fIproflen\fP\fB);\fP
+
+\fBvoid png_write_IDAT (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
+
+\fBvoid png_write_IEND (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_write_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fP\fIfilter_type\fP\fB, int \fIinterlace_type\fP\fB);\fP
+
+\fBvoid png_write_iTXt (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcompression\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fIlang\fP\fB, png_charp \fP\fItranslated_key\fP\fB, png_charp \fItext\fP\fB);\fP
+
+\fBvoid png_write_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_offset\fP\fB, png_uint_32 \fP\fIy_offset\fP\fB, int \fIunit_type\fP\fB);\fP
+
+\fBvoid png_write_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIpurpose\fP\fB, png_int_32 \fP\fIX0\fP\fB, png_int_32 \fP\fIX1\fP\fB, int \fP\fItype\fP\fB, int \fP\fInparams\fP\fB, png_charp \fP\fIunits\fP\fB, png_charpp \fIparams\fP\fB);\fP
+
+\fBvoid png_write_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_pixels_per_unit\fP\fB, png_uint_32 \fP\fIy_pixels_per_unit\fP\fB, int \fIunit_type\fP\fB);\fP
+
+\fBvoid png_write_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_uint_32 \fInum_pal\fP\fB);\fP
+
+\fBvoid png_write_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_color_8p \fP\fIsbit\fP\fB, int \fIcolor_type\fP\fB);\fP
+
+\fBvoid png_write_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, double \fP\fIwidth\fP\fB, double \fIheight\fP\fB);\fP
+
+\fBvoid png_write_sCAL_s (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, png_charp \fP\fIwidth\fP\fB, png_charp \fIheight\fP\fB);\fP
+
+\fBvoid png_write_sig (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_write_sRGB (png_structp \fP\fIpng_ptr\fP\fB, int \fIintent\fP\fB);\fP
+
+\fBvoid png_write_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_spalette_p \fIpalette\fP\fB);\fP
+
+\fBvoid png_write_start_row (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fBvoid png_write_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fItext_len\fP\fB);\fP
+
+\fBvoid png_write_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_timep \fImod_time\fP\fB);\fP
+
+\fBvoid png_write_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fItrans\fP\fB, png_color_16p \fP\fIvalues\fP\fB, int \fP\fInumber\fP\fB, int \fIcolor_type\fP\fB);\fP
+
+\fBvoid png_write_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fP\fItext_len\fP\fB, int \fIcompression\fP\fB);\fP
+
+\fBvoidpf png_zalloc (voidpf \fP\fIpng_ptr\fP\fB, uInt \fP\fIitems\fP\fB, uInt \fIsize\fP\fB);\fP
+
+\fBvoid png_zfree (voidpf \fP\fIpng_ptr\fP\fB, voidpf \fIptr\fP\fB);\fP
 
 \fI\fB
 
 .SH DESCRIPTION
-The functions previously listed here are  used privately by libpng
+The functions listed above are used privately by libpng
 and are not recommended for use by applications.  They are
 not "exported" to applications using shared libraries.  They
 are listed alphabetically here as an aid to libpng maintainers.
-See pngpriv.h for more information on these functions.
+See png.h for more information on these functions.
 
 .SH SEE ALSO
-.BR "png"(5), " libpng"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
+.IR libpng(3) ", " png(5)
 .SH AUTHOR
 Glenn Randers-Pehrson

missing

@@ -1,10 +1,6 @@
 #! /bin/sh
 # Common stub for a few missing GNU programs while installing.
-
+# Copyright 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
-scriptversion=2009-04-28.21; # UTC
-
-# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
-# 2008, 2009 Free Software Foundation, Inc.
 # Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
 
 # This program is free software; you can redistribute it and/or modify
@@ -18,7 +14,9 @@ scriptversion=2009-04-28.21; # UTC
 # GNU General Public License for more details.
 
 # You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -31,8 +29,6 @@ if test $# -eq 0; then
 fi
 
 run=:
-sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p'
-sed_minuso='s/.* -o \([^ ]*\).*/\1/p'
 
 # In the cases where this matters, `missing' is being run in the
 # srcdir already.
@@ -42,24 +38,18 @@ else
   configure_ac=configure.in
 fi
 
-msg="missing on your system"
+case "$1" in
-
-case $1 in
 --run)
   # Try to run requested program, and just exit if it succeeds.
   run=
   shift
   "$@" && exit 0
-  # Exit code 63 means version mismatch.  This often happens
-  # when the user try to use an ancient version of a tool on
-  # a file that requires a minimum version.  In this case we
-  # we should proceed has if the program had been absent, or
-  # if --run hadn't been passed.
-  if test $? = 63; then
-    run=:
-    msg="probably too old"
-  fi
   ;;
+esac
+
+# If it does not exist, or fails to run (possibly an outdated version),
+# try to emulate it.
+case "$1" in
 
   -h|--h|--he|--hel|--help)
     echo "\
@@ -77,7 +67,6 @@ Supported PROGRAM values:
   aclocal      touch file \`aclocal.m4'
   autoconf     touch file \`configure'
   autoheader   touch file \`config.h.in'
-  autom4te     touch the output file, or create a stub one
   automake     touch all \`Makefile.in' files
   bison        create \`y.tab.[ch]', if possible, from existing .[ch]
   flex         create \`lex.yy.c', if possible, from existing .c
@@ -85,18 +74,11 @@ Supported PROGRAM values:
   lex          create \`lex.yy.c', if possible, from existing .c
   makeinfo     touch the output file
   tar          try tar, gnutar, gtar, then tar without non-portable flags
-  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
+  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]"
-
-Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and
-\`g' are ignored when checking the name.
-
-Send bug reports to <bug-automake@gnu.org>."
-    exit $?
     ;;
 
   -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
-    echo "missing $scriptversion (GNU Automake)"
+    echo "missing 0.3 - GNU automake"
-    exit $?
     ;;
 
   -*)
@@ -105,69 +87,27 @@ Send bug reports to <bug-automake@gnu.org>."
     exit 1
     ;;
 
-esac
+  aclocal)
-
-# normalize program name to check for.
-program=`echo "$1" | sed '
-  s/^gnu-//; t
-  s/^gnu//; t
-  s/^g//; t'`
-
-# Now exit if we have it, but it failed.  Also exit now if we
-# don't have it and --version was passed (most likely to detect
-# the program).  This is about non-GNU programs, so use $1 not
-# $program.
-case $1 in
-  lex*|yacc*)
-    # Not GNU programs, they don't have --version.
-    ;;
-
-  tar*)
-    if test -n "$run"; then
-       echo 1>&2 "ERROR: \`tar' requires --run"
-       exit 1
-    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
-       exit 1
-    fi
-    ;;
-
-  *)
-    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
-       # We have it, but it failed.
-       exit 1
-    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
-       # Could not run --version or --help.  This is probably someone
-       # running `$TOOL --version' or `$TOOL --help' to check whether
-       # $TOOL exists and not knowing $TOOL uses missing.
-       exit 1
-    fi
-    ;;
-esac
-
-# If it does not exist, or fails to run (possibly an outdated version),
-# try to emulate it.
-case $program in
-  aclocal*)
     echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
+WARNING: \`$1' is missing on your system.  You should only need it if
          you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
          to install the \`Automake' and \`Perl' packages.  Grab them from
          any GNU archive site."
     touch aclocal.m4
     ;;
 
-  autoconf*)
+  autoconf)
     echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
+WARNING: \`$1' is missing on your system.  You should only need it if
          you modified \`${configure_ac}'.  You might want to install the
          \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
          archive site."
     touch configure
     ;;
 
-  autoheader*)
+  autoheader)
     echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
+WARNING: \`$1' is missing on your system.  You should only need it if
          you modified \`acconfig.h' or \`${configure_ac}'.  You might want
          to install the \`Autoconf' and \`GNU m4' packages.  Grab them
          from any GNU archive site."
@@ -175,7 +115,7 @@ WARNING: \`$1' is $msg.  You should only need it if
     test -z "$files" && files="config.h"
     touch_files=
     for f in $files; do
-      case $f in
+      case "$f" in
       *:*) touch_files="$touch_files "`echo "$f" |
 				       sed -e 's/^[^:]*://' -e 's/:.*//'`;;
       *) touch_files="$touch_files $f.in";;
@@ -184,9 +124,9 @@ WARNING: \`$1' is $msg.  You should only need it if
     touch $touch_files
     ;;
 
-  automake*)
+  automake)
     echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
+WARNING: \`$1' is missing on your system.  You should only need it if
          you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
          You might want to install the \`Automake' and \`Perl' packages.
          Grab them from any GNU archive site."
@@ -195,153 +135,128 @@ WARNING: \`$1' is $msg.  You should only need it if
 	   while read f; do touch "$f"; done
     ;;
 
-  autom4te*)
+  bison|yacc)
     echo 1>&2 "\
-WARNING: \`$1' is needed, but is $msg.
+WARNING: \`$1' is missing on your system.  You should only need it if
-         You might have modified some files without having the
-         proper tools for further handling them.
-         You can get \`$1' as part of \`Autoconf' from any GNU
-         archive site."
-
-    file=`echo "$*" | sed -n "$sed_output"`
-    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
-    if test -f "$file"; then
-	touch $file
-    else
-	test -z "$file" || exec >$file
-	echo "#! /bin/sh"
-	echo "# Created by GNU Automake missing as a replacement of"
-	echo "#  $ $@"
-	echo "exit 0"
-	chmod +x $file
-	exit 1
-    fi
-    ;;
-
-  bison*|yacc*)
-    echo 1>&2 "\
-WARNING: \`$1' $msg.  You should only need it if
          you modified a \`.y' file.  You may need the \`Bison' package
          in order for those modifications to take effect.  You can get
          \`Bison' from any GNU archive site."
     rm -f y.tab.c y.tab.h
-    if test $# -ne 1; then
+    if [ $# -ne 1 ]; then
         eval LASTARG="\${$#}"
-	case $LASTARG in
+	case "$LASTARG" in
 	*.y)
 	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
-	    if test -f "$SRCFILE"; then
+	    if [ -f "$SRCFILE" ]; then
 	         cp "$SRCFILE" y.tab.c
 	    fi
 	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
-	    if test -f "$SRCFILE"; then
+	    if [ -f "$SRCFILE" ]; then
 	         cp "$SRCFILE" y.tab.h
 	    fi
 	  ;;
 	esac
     fi
-    if test ! -f y.tab.h; then
+    if [ ! -f y.tab.h ]; then
 	echo >y.tab.h
     fi
-    if test ! -f y.tab.c; then
+    if [ ! -f y.tab.c ]; then
 	echo 'main() { return 0; }' >y.tab.c
     fi
     ;;
 
-  lex*|flex*)
+  lex|flex)
     echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
+WARNING: \`$1' is missing on your system.  You should only need it if
          you modified a \`.l' file.  You may need the \`Flex' package
          in order for those modifications to take effect.  You can get
          \`Flex' from any GNU archive site."
     rm -f lex.yy.c
-    if test $# -ne 1; then
+    if [ $# -ne 1 ]; then
         eval LASTARG="\${$#}"
-	case $LASTARG in
+	case "$LASTARG" in
 	*.l)
 	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
-	    if test -f "$SRCFILE"; then
+	    if [ -f "$SRCFILE" ]; then
 	         cp "$SRCFILE" lex.yy.c
 	    fi
 	  ;;
 	esac
     fi
-    if test ! -f lex.yy.c; then
+    if [ ! -f lex.yy.c ]; then
 	echo 'main() { return 0; }' >lex.yy.c
     fi
     ;;
 
-  help2man*)
+  help2man)
     echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
+WARNING: \`$1' is missing on your system.  You should only need it if
 	 you modified a dependency of a manual page.  You may need the
 	 \`Help2man' package in order for those modifications to take
 	 effect.  You can get \`Help2man' from any GNU archive site."
 
-    file=`echo "$*" | sed -n "$sed_output"`
+    file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
-    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
+    if test -z "$file"; then
-    if test -f "$file"; then
+	file=`echo "$*" | sed -n 's/.*--output=\([^ ]*\).*/\1/p'`
+    fi
+    if [ -f "$file" ]; then
 	touch $file
     else
 	test -z "$file" || exec >$file
 	echo ".ab help2man is required to generate this page"
-	exit $?
+	exit 1
     fi
     ;;
 
-  makeinfo*)
+  makeinfo)
+    if test -z "$run" && (makeinfo --version) > /dev/null 2>&1; then
+       # We have makeinfo, but it failed.
+       exit 1
+    fi
+
     echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
+WARNING: \`$1' is missing on your system.  You should only need it if
          you modified a \`.texi' or \`.texinfo' file, or any other file
          indirectly affecting the aspect of the manual.  The spurious
          call might also be the consequence of using a buggy \`make' (AIX,
          DU, IRIX).  You might want to install the \`Texinfo' package or
          the \`GNU make' package.  Grab either from any GNU archive site."
-    # The file to touch is that specified with -o ...
+    file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
-    file=`echo "$*" | sed -n "$sed_output"`
-    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
     if test -z "$file"; then
-      # ... or it is the one specified with @setfilename ...
+      file=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
-      infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
+      file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $file`
-      file=`sed -n '
-	/^@setfilename/{
-	  s/.* \([^ ]*\) *$/\1/
-	  p
-	  q
-	}' $infile`
-      # ... or it is derived from the source name (dir/f.texi becomes f.info)
-      test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
     fi
-    # If the file does not exist, the user really needs makeinfo;
-    # let's fail without touching anything.
-    test -f $file || exit 1
     touch $file
     ;;
 
-  tar*)
+  tar)
     shift
+    if test -n "$run"; then
+      echo 1>&2 "ERROR: \`tar' requires --run"
+      exit 1
+    fi
 
     # We have already tried tar in the generic part.
     # Look for gnutar/gtar before invocation to avoid ugly error
     # messages.
     if (gnutar --version > /dev/null 2>&1); then
-       gnutar "$@" && exit 0
+       gnutar ${1+"$@"} && exit 0
     fi
     if (gtar --version > /dev/null 2>&1); then
-       gtar "$@" && exit 0
+       gtar ${1+"$@"} && exit 0
     fi
     firstarg="$1"
     if shift; then
-	case $firstarg in
+	case "$firstarg" in
 	*o*)
 	    firstarg=`echo "$firstarg" | sed s/o//`
-	    tar "$firstarg" "$@" && exit 0
+	    tar "$firstarg" ${1+"$@"} && exit 0
 	    ;;
 	esac
-	case $firstarg in
+	case "$firstarg" in
 	*h*)
 	    firstarg=`echo "$firstarg" | sed s/h//`
-	    tar "$firstarg" "$@" && exit 0
+	    tar "$firstarg" ${1+"$@"} && exit 0
 	    ;;
 	esac
     fi
@@ -355,10 +270,10 @@ WARNING: I can't seem to be able to run \`tar' with the given arguments.
 
   *)
     echo 1>&2 "\
-WARNING: \`$1' is needed, and is $msg.
+WARNING: \`$1' is needed, and you do not seem to have it handy on your
-         You might have modified some files without having the
+         system.  You might have modified some files without having the
          proper tools for further handling them.  Check the \`README' file,
-         it often tells you about the needed prerequisites for installing
+         it often tells you about the needed prerequirements for installing
          this package.  You may also peek at any GNU archive site, in case
          some other package would contain this missing \`$1' program."
     exit 1
@@ -366,11 +281,3 @@ WARNING: \`$1' is needed, and is $msg.
 esac
 
 exit 0
-
-# Local variables:
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "scriptversion="
-# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
-# time-stamp-end: "; # UTC"
-# End:

mkinstalldirs

@@ -0,0 +1,40 @@
+#! /bin/sh
+# mkinstalldirs --- make directory hierarchy
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1993-05-16
+# Public domain
+
+# $Id: mkinstalldirs,v 1.13 1999/01/05 03:18:55 bje Exp $
+
+errstatus=0
+
+for file
+do
+   set fnord `echo ":$file" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`
+   shift
+
+   pathcomp=
+   for d
+   do
+     pathcomp="$pathcomp$d"
+     case "$pathcomp" in
+       -* ) pathcomp=./$pathcomp ;;
+     esac
+
+     if test ! -d "$pathcomp"; then
+        echo "mkdir $pathcomp"
+
+        mkdir "$pathcomp" || lasterr=$?
+
+        if test ! -d "$pathcomp"; then
+  	  errstatus=$lasterr
+        fi
+     fi
+
+     pathcomp="$pathcomp/"
+   done
+done
+
+exit $errstatus
+
+# mkinstalldirs ends here

png.5

@@ -1,4 +1,4 @@
-.TH PNG 5 "March 31, 2011"
+.TH PNG 5 "September 26, 2007"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
@@ -18,7 +18,7 @@ gamma and chromaticity data for improved color matching on heterogeneous
 platforms.
 
 .SH "SEE ALSO"
-.BR "libpng"(3), " libpngpf"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
+.IR libpng(3) ", " zlib(3) ", " deflate(5) ", and " zlib(5)
 .LP
 PNG specification (second edition), November 2003:
 .IP

pngdebug.h

@@ -1,157 +0,0 @@
-
-/* pngdebug.h - Debugging macros for libpng, also used in pngtest.c
- *
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * Last changed in libpng 1.5.0 [January 6, 2011]
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-/* Define PNG_DEBUG at compile time for debugging information.  Higher
- * numbers for PNG_DEBUG mean more debugging information.  This has
- * only been added since version 0.95 so it is not implemented throughout
- * libpng yet, but more support will be added as needed.
- *
- * png_debug[1-2]?(level, message ,arg{0-2})
- *   Expands to a statement (either a simple expression or a compound
- *   do..while(0) statement) that outputs a message with parameter
- *   substitution if PNG_DEBUG is defined to 2 or more.  If PNG_DEBUG
- *   is undefined, 0 or 1 every png_debug expands to a simple expression
- *   (actually ((void)0)).
- *
- *   level: level of detail of message, starting at 0.  A level 'n'
- *          message is preceded by 'n' tab characters (not implemented
- *          on Microsoft compilers unless PNG_DEBUG_FILE is also
- *          defined, to allow debug DLL compilation with no standard IO).
- *   message: a printf(3) style text string.  A trailing '\n' is added
- *            to the message.
- *   arg: 0 to 2 arguments for printf(3) style substitution in message.
- */
-#ifndef PNGDEBUG_H
-#define PNGDEBUG_H
-/* These settings control the formatting of messages in png.c and pngerror.c */
-/* Moved to pngdebug.h at 1.5.0 */
-#  ifndef PNG_LITERAL_SHARP
-#    define PNG_LITERAL_SHARP 0x23
-#  endif
-#  ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
-#    define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
-#  endif
-#  ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
-#    define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
-#  endif
-#  ifndef PNG_STRING_NEWLINE
-#    define PNG_STRING_NEWLINE "\n"
-#  endif
-
-#ifdef PNG_DEBUG
-#  if (PNG_DEBUG > 0)
-#    if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER)
-#      include <crtdbg.h>
-#      if (PNG_DEBUG > 1)
-#        ifndef _DEBUG
-#          define _DEBUG
-#        endif
-#        ifndef png_debug
-#          define png_debug(l,m)  _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE)
-#        endif
-#        ifndef png_debug1
-#          define png_debug1(l,m,p1)  _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1)
-#        endif
-#        ifndef png_debug2
-#          define png_debug2(l,m,p1,p2) \
-             _RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2)
-#        endif
-#      endif
-#    else /* PNG_DEBUG_FILE || !_MSC_VER */
-#      ifndef PNG_STDIO_SUPPORTED
-#        include <stdio.h> /* not included yet */
-#      endif
-#      ifndef PNG_DEBUG_FILE
-#        define PNG_DEBUG_FILE stderr
-#      endif /* PNG_DEBUG_FILE */
-
-#      if (PNG_DEBUG > 1)
-/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on
- * non-ISO compilers
- */
-#        ifdef __STDC__
-#          ifndef png_debug
-#            define png_debug(l,m) \
-       do { \
-       int num_tabs=l; \
-       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \
-       } while (0)
-#          endif
-#          ifndef png_debug1
-#            define png_debug1(l,m,p1) \
-       do { \
-       int num_tabs=l; \
-       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
-       } while (0)
-#          endif
-#          ifndef png_debug2
-#            define png_debug2(l,m,p1,p2) \
-       do { \
-       int num_tabs=l; \
-       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
-       } while (0)
-#          endif
-#        else /* __STDC __ */
-#          ifndef png_debug
-#            define png_debug(l,m) \
-       do { \
-       int num_tabs=l; \
-       char format[256]; \
-       snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
-         m,PNG_STRING_NEWLINE); \
-       fprintf(PNG_DEBUG_FILE,format); \
-       } while (0)
-#          endif
-#          ifndef png_debug1
-#            define png_debug1(l,m,p1) \
-       do { \
-       int num_tabs=l; \
-       char format[256]; \
-       snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
-         m,PNG_STRING_NEWLINE); \
-       fprintf(PNG_DEBUG_FILE,format,p1); \
-       } while (0)
-#          endif
-#          ifndef png_debug2
-#            define png_debug2(l,m,p1,p2) \
-       do { \
-       int num_tabs=l; \
-       char format[256]; \
-       snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
-         m,PNG_STRING_NEWLINE); \
-       fprintf(PNG_DEBUG_FILE,format,p1,p2); \
-       } while (0)
-#          endif
-#        endif /* __STDC __ */
-#      endif /* (PNG_DEBUG > 1) */
-
-#    endif /* _MSC_VER */
-#  endif /* (PNG_DEBUG > 0) */
-#endif /* PNG_DEBUG */
-#ifndef png_debug
-#  define png_debug(l, m) ((void)0)
-#endif
-#ifndef png_debug1
-#  define png_debug1(l, m, p1) ((void)0)
-#endif
-#ifndef png_debug2
-#  define png_debug2(l, m, p1, p2) ((void)0)
-#endif
-#endif /* PNGDEBUG_H */

pngerror.c

@@ -1,79 +1,72 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * Last changed in libpng 1.5.1 [February 3, 2011]
+ * Last changed in libpng 1.2.20 September 26, 2007
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
  * This file provides a location for all error handling.  Users who
  * need special error handling are expected to write replacement functions
  * and use png_set_error_fn() to use those functions.  See the instructions
  * at each function.
  */
 
-#include "pngpriv.h"
+#define PNG_INTERNAL
+#include "png.h"
 
 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-
+static void /* PRIVATE */
-static PNG_FUNCTION(void, png_default_error,PNGARG((png_structp png_ptr,
+png_default_error PNGARG((png_structp png_ptr,
-    png_const_charp error_message)),PNG_NORETURN);
+  png_const_charp error_message));
-
+#ifndef PNG_NO_WARNINGS
-#ifdef PNG_WARNINGS_SUPPORTED
 static void /* PRIVATE */
 png_default_warning PNGARG((png_structp png_ptr,
-   png_const_charp warning_message));
+  png_const_charp warning_message));
-#endif /* PNG_WARNINGS_SUPPORTED */
+#endif /* PNG_NO_WARNINGS */
 
 /* This function is called whenever there is a fatal error.  This function
  * should not be changed.  If there is a need to handle errors differently,
  * you should supply a replacement error function and use png_set_error_fn()
  * to replace the error function at run-time.
  */
-#ifdef PNG_ERROR_TEXT_SUPPORTED
+#ifndef PNG_NO_ERROR_TEXT
-PNG_FUNCTION(void,PNGAPI
+void PNGAPI
-png_error,(png_structp png_ptr, png_const_charp error_message),PNG_NORETURN)
+png_error(png_structp png_ptr, png_const_charp error_message)
 {
 #ifdef PNG_ERROR_NUMBERS_SUPPORTED
    char msg[16];
    if (png_ptr != NULL)
    {
-      if (png_ptr->flags&
+     if (png_ptr->flags&
-         (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
+       (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
-      {
+     {
-         if (*error_message == PNG_LITERAL_SHARP)
+       if (*error_message == '#')
-         {
+       {
-            /* Strip "#nnnn " from beginning of error message. */
+           int offset;
-            int offset;
+           for (offset=1; offset<15; offset++)
-            for (offset = 1; offset<15; offset++)
+              if (*(error_message+offset) == ' ')
-               if (error_message[offset] == ' ')
                   break;
-
+           if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
-            if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+           {
-            {
+              int i;
-               int i;
+              for (i=0; i<offset-1; i++)
-               for (i = 0; i < offset - 1; i++)
+                 msg[i]=error_message[i+1];
-                  msg[i] = error_message[i + 1];
+              msg[i]='\0';
-               msg[i - 1] = '\0';
+              error_message=msg;
-               error_message = msg;
+           }
-            }
+           else
-
+              error_message+=offset;
-            else
+       }
-               error_message += offset;
+       else
-      }
+       {
-
+           if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
-      else
+           {
-      {
+              msg[0]='0';
-         if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+              msg[1]='\0';
-         {
+              error_message=msg;
-            msg[0] = '0';
+           }
-            msg[1] = '\0';
-            error_message = msg;
-         }
        }
      }
    }
@@ -86,8 +79,8 @@ png_error,(png_structp png_ptr, png_const_charp error_message),PNG_NORETURN)
    png_default_error(png_ptr, error_message);
 }
 #else
-PNG_FUNCTION(void,PNGAPI
+void PNGAPI
-png_err,(png_structp png_ptr),PNG_NORETURN)
+png_err(png_structp png_ptr)
 {
    if (png_ptr != NULL && png_ptr->error_fn != NULL)
       (*(png_ptr->error_fn))(png_ptr, '\0');
@@ -96,9 +89,9 @@ png_err,(png_structp png_ptr),PNG_NORETURN)
       use the default handler, which will not return. */
    png_default_error(png_ptr, '\0');
 }
-#endif /* PNG_ERROR_TEXT_SUPPORTED */
+#endif /* PNG_NO_ERROR_TEXT */
 
-#ifdef PNG_WARNINGS_SUPPORTED
+#ifndef PNG_NO_WARNINGS
 /* This function is called whenever there is a non-fatal error.  This function
  * should not be changed.  If there is a need to handle warnings differently,
  * you should supply a replacement warning function and use
@@ -112,34 +105,24 @@ png_warning(png_structp png_ptr, png_const_charp warning_message)
    {
 #ifdef PNG_ERROR_NUMBERS_SUPPORTED
    if (png_ptr->flags&
-       (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
+     (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
 #endif
-      {
+     {
-         if (*warning_message == PNG_LITERAL_SHARP)
+       if (*warning_message == '#')
-         {
+       {
-            for (offset = 1; offset < 15; offset++)
+           for (offset=1; offset<15; offset++)
-               if (warning_message[offset] == ' ')
+              if (*(warning_message+offset) == ' ')
                   break;
-         }
+       }
-      }
+     }
+     if (png_ptr != NULL && png_ptr->warning_fn != NULL)
+        (*(png_ptr->warning_fn))(png_ptr, warning_message+offset);
    }
-   if (png_ptr != NULL && png_ptr->warning_fn != NULL)
-      (*(png_ptr->warning_fn))(png_ptr, warning_message + offset);
    else
-      png_default_warning(png_ptr, warning_message + offset);
+      png_default_warning(png_ptr, warning_message+offset);
 }
-#endif /* PNG_WARNINGS_SUPPORTED */
+#endif /* PNG_NO_WARNINGS */
 
-#ifdef PNG_BENIGN_ERRORS_SUPPORTED
-void PNGAPI
-png_benign_error(png_structp png_ptr, png_const_charp error_message)
-{
-  if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
-     png_warning(png_ptr, error_message);
-  else
-     png_error(png_ptr, error_message);
-}
-#endif
 
 /* These utilities are used internally to build an error message that relates
  * to the current chunk.  The chunk name comes from png_ptr->chunk_name,
@@ -153,11 +136,10 @@ static PNG_CONST char png_digit[16] = {
    'A', 'B', 'C', 'D', 'E', 'F'
 };
 
-#define PNG_MAX_ERROR_TEXT 64
+#if !defined(PNG_NO_WARNINGS) || !defined(PNG_NO_ERROR_TEXT)
-#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED)
 static void /* PRIVATE */
 png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
-    error_message)
+   error_message)
 {
    int iout = 0, iin = 0;
 
@@ -166,12 +148,11 @@ png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
       int c = png_ptr->chunk_name[iin++];
       if (isnonalpha(c))
       {
-         buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET;
+         buffer[iout++] = '[';
          buffer[iout++] = png_digit[(c & 0xf0) >> 4];
          buffer[iout++] = png_digit[c & 0x0f];
-         buffer[iout++] = PNG_LITERAL_RIGHT_SQUARE_BRACKET;
+         buffer[iout++] = ']';
       }
-
       else
       {
          buffer[iout++] = (png_byte)c;
@@ -179,177 +160,104 @@ png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
    }
 
    if (error_message == NULL)
-      buffer[iout] = '\0';
+      buffer[iout] = 0;
-
    else
    {
       buffer[iout++] = ':';
       buffer[iout++] = ' ';
-      png_memcpy(buffer + iout, error_message, PNG_MAX_ERROR_TEXT);
+      png_strncpy(buffer+iout, error_message, 63);
-      buffer[iout + PNG_MAX_ERROR_TEXT - 1] = '\0';
+      buffer[iout+63] = 0;
    }
 }
-#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */
 
-#if defined(PNG_READ_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED)
+#ifdef PNG_READ_SUPPORTED
-PNG_FUNCTION(void,PNGAPI
+void PNGAPI
-png_chunk_error,(png_structp png_ptr, png_const_charp error_message),
+png_chunk_error(png_structp png_ptr, png_const_charp error_message)
-   PNG_NORETURN)
 {
-   char msg[18+PNG_MAX_ERROR_TEXT];
+   char msg[18+64];
    if (png_ptr == NULL)
-      png_error(png_ptr, error_message);
+     png_error(png_ptr, error_message);
-
    else
    {
-      png_format_buffer(png_ptr, msg, error_message);
+     png_format_buffer(png_ptr, msg, error_message);
-      png_error(png_ptr, msg);
+     png_error(png_ptr, msg);
    }
 }
-#endif /* PNG_READ_SUPPORTED && PNG_ERROR_TEXT_SUPPORTED */
+#endif /* PNG_READ_SUPPORTED */
+#endif /* !defined(PNG_NO_WARNINGS) || !defined(PNG_NO_ERROR_TEXT) */
 
-#ifdef PNG_WARNINGS_SUPPORTED
+#ifndef PNG_NO_WARNINGS
 void PNGAPI
 png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
 {
-   char msg[18+PNG_MAX_ERROR_TEXT];
+   char msg[18+64];
    if (png_ptr == NULL)
-      png_warning(png_ptr, warning_message);
+     png_warning(png_ptr, warning_message);
-
    else
    {
-      png_format_buffer(png_ptr, msg, warning_message);
+     png_format_buffer(png_ptr, msg, warning_message);
-      png_warning(png_ptr, msg);
+     png_warning(png_ptr, msg);
    }
 }
-#endif /* PNG_WARNINGS_SUPPORTED */
+#endif /* PNG_NO_WARNINGS */
 
-#ifdef PNG_READ_SUPPORTED
-#ifdef PNG_BENIGN_ERRORS_SUPPORTED
-void PNGAPI
-png_chunk_benign_error(png_structp png_ptr, png_const_charp error_message)
-{
-   if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
-      png_chunk_warning(png_ptr, error_message);
-
-   else
-      png_chunk_error(png_ptr, error_message);
-}
-#endif
-#endif /* PNG_READ_SUPPORTED */
-
-#ifdef PNG_ERROR_TEXT_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_FUNCTION(void,
-png_fixed_error,(png_structp png_ptr, png_const_charp name),PNG_NORETURN)
-{
-#  define fixed_message "fixed point overflow in "
-#  define fixed_message_ln ((sizeof fixed_message)-1)
-   int  iin;
-   char msg[fixed_message_ln+PNG_MAX_ERROR_TEXT];
-   png_memcpy(msg, fixed_message, fixed_message_ln);
-   iin = 0;
-   if (name != NULL) while (iin < (PNG_MAX_ERROR_TEXT-1) && name[iin] != 0)
-   {
-      msg[fixed_message_ln + iin] = name[iin];
-      ++iin;
-   }
-   msg[fixed_message_ln + iin] = 0;
-   png_error(png_ptr, msg);
-}
-#endif
-#endif
-
-#ifdef PNG_SETJMP_SUPPORTED
-/* This API only exists if ANSI-C style error handling is used,
- * otherwise it is necessary for png_default_error to be overridden.
- */
-jmp_buf* PNGAPI
-png_set_longjmp_fn(png_structp png_ptr, png_longjmp_ptr longjmp_fn,
-    size_t jmp_buf_size)
-{
-   if (png_ptr == NULL || jmp_buf_size != png_sizeof(jmp_buf))
-      return NULL;
-
-   png_ptr->longjmp_fn = longjmp_fn;
-   return &png_ptr->png_jmpbuf;
-}
-#endif
 
 /* This is the default error handling function.  Note that replacements for
  * this function MUST NOT RETURN, or the program will likely crash.  This
  * function is used by default, or if the program supplies NULL for the
  * error function pointer in png_set_error_fn().
  */
-static PNG_FUNCTION(void /* PRIVATE */,
+static void /* PRIVATE */
-png_default_error,(png_structp png_ptr, png_const_charp error_message),
+png_default_error(png_structp png_ptr, png_const_charp error_message)
-   PNG_NORETURN)
 {
-#ifdef PNG_CONSOLE_IO_SUPPORTED
+#ifndef PNG_NO_CONSOLE_IO
 #ifdef PNG_ERROR_NUMBERS_SUPPORTED
-   if (*error_message == PNG_LITERAL_SHARP)
+   if (*error_message == '#')
    {
-      /* Strip "#nnnn " from beginning of error message. */
+     int offset;
-      int offset;
+     char error_number[16];
-      char error_number[16];
+     for (offset=0; offset<15; offset++)
-      for (offset = 0; offset<15; offset++)
+     {
-      {
+         error_number[offset] = *(error_message+offset+1);
-         error_number[offset] = error_message[offset + 1];
+         if (*(error_message+offset) == ' ')
-         if (error_message[offset] == ' ')
+             break;
-            break;
+     }
-      }
+     if((offset > 1) && (offset < 15))
-
+     {
-      if ((offset > 1) && (offset < 15))
+       error_number[offset-1]='\0';
-      {
+       fprintf(stderr, "libpng error no. %s: %s\n", error_number,
-         error_number[offset - 1] = '\0';
+          error_message+offset);
-         fprintf(stderr, "libpng error no. %s: %s",
+     }
-             error_number, error_message + offset + 1);
+     else
-         fprintf(stderr, PNG_STRING_NEWLINE);
+       fprintf(stderr, "libpng error: %s, offset=%d\n", error_message,offset);
-      }
-
-      else
-      {
-         fprintf(stderr, "libpng error: %s, offset=%d",
-             error_message, offset);
-         fprintf(stderr, PNG_STRING_NEWLINE);
-      }
    }
    else
 #endif
-   {
+   fprintf(stderr, "libpng error: %s\n", error_message);
-      fprintf(stderr, "libpng error: %s", error_message);
-      fprintf(stderr, PNG_STRING_NEWLINE);
-   }
 #endif
-#ifndef PNG_CONSOLE_IO_SUPPORTED
-   PNG_UNUSED(error_message) /* Make compiler happy */
-#endif
-   png_longjmp(png_ptr, 1);
-}
 
-PNG_FUNCTION(void,PNGAPI
-png_longjmp,(png_structp png_ptr, int val),PNG_NORETURN)
-{
 #ifdef PNG_SETJMP_SUPPORTED
-   if (png_ptr && png_ptr->longjmp_fn)
+   if (png_ptr)
    {
 #  ifdef USE_FAR_KEYWORD
-      {
+   {
-         jmp_buf png_jmpbuf;
+      jmp_buf jmpbuf;
-         png_memcpy(png_jmpbuf, png_ptr->png_jmpbuf, png_sizeof(jmp_buf));
+      png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf));
-         png_ptr->longjmp_fn(png_jmpbuf, val);
+      longjmp(jmpbuf, 1);
-      }
+   }
-
 #  else
-   png_ptr->longjmp_fn(png_ptr->png_jmpbuf, val);
+   longjmp(png_ptr->jmpbuf, 1);
 #  endif
    }
-#endif
+#else
-   /* Here if not setjmp support or if png_ptr is null. */
    PNG_ABORT();
+#endif
+#ifdef PNG_NO_CONSOLE_IO
+   error_message = error_message; /* make compiler happy */
+#endif
 }
 
-#ifdef PNG_WARNINGS_SUPPORTED
+#ifndef PNG_NO_WARNINGS
 /* This function is called when there is a warning, but the library thinks
  * it can continue anyway.  Replacement functions don't have to do anything
  * here if you don't want them to.  In the default configuration, png_ptr is
@@ -358,60 +266,48 @@ png_longjmp,(png_structp png_ptr, int val),PNG_NORETURN)
 static void /* PRIVATE */
 png_default_warning(png_structp png_ptr, png_const_charp warning_message)
 {
-#ifdef PNG_CONSOLE_IO_SUPPORTED
+#ifndef PNG_NO_CONSOLE_IO
 #  ifdef PNG_ERROR_NUMBERS_SUPPORTED
-   if (*warning_message == PNG_LITERAL_SHARP)
+   if (*warning_message == '#')
    {
-      int offset;
+     int offset;
-      char warning_number[16];
+     char warning_number[16];
-      for (offset = 0; offset < 15; offset++)
+     for (offset=0; offset<15; offset++)
-      {
+     {
-         warning_number[offset] = warning_message[offset + 1];
+        warning_number[offset]=*(warning_message+offset+1);
-         if (warning_message[offset] == ' ')
+        if (*(warning_message+offset) == ' ')
             break;
-      }
+     }
-
+     if((offset > 1) && (offset < 15))
-      if ((offset > 1) && (offset < 15))
+     {
-      {
+       warning_number[offset-1]='\0';
-         warning_number[offset + 1] = '\0';
+       fprintf(stderr, "libpng warning no. %s: %s\n", warning_number,
-         fprintf(stderr, "libpng warning no. %s: %s",
+          warning_message+offset);
-             warning_number, warning_message + offset);
+     }
-         fprintf(stderr, PNG_STRING_NEWLINE);
+     else
-      }
+       fprintf(stderr, "libpng warning: %s\n", warning_message);
-
-      else
-      {
-         fprintf(stderr, "libpng warning: %s",
-             warning_message);
-         fprintf(stderr, PNG_STRING_NEWLINE);
-      }
    }
    else
 #  endif
-
+     fprintf(stderr, "libpng warning: %s\n", warning_message);
-   {
-      fprintf(stderr, "libpng warning: %s", warning_message);
-      fprintf(stderr, PNG_STRING_NEWLINE);
-   }
 #else
-   PNG_UNUSED(warning_message) /* Make compiler happy */
+   warning_message = warning_message; /* make compiler happy */
 #endif
-   PNG_UNUSED(png_ptr) /* Make compiler happy */
+   png_ptr = png_ptr; /* make compiler happy */
 }
-#endif /* PNG_WARNINGS_SUPPORTED */
+#endif /* PNG_NO_WARNINGS */
 
 /* This function is called when the application wants to use another method
  * of handling errors and warnings.  Note that the error function MUST NOT
  * return to the calling routine or serious problems will occur.  The return
- * method used in the default routine calls longjmp(png_ptr->png_jmpbuf, 1)
+ * method used in the default routine calls longjmp(png_ptr->jmpbuf, 1)
  */
 void PNGAPI
 png_set_error_fn(png_structp png_ptr, png_voidp error_ptr,
-    png_error_ptr error_fn, png_error_ptr warning_fn)
+   png_error_ptr error_fn, png_error_ptr warning_fn)
 {
    if (png_ptr == NULL)
       return;
-
    png_ptr->error_ptr = error_ptr;
    png_ptr->error_fn = error_fn;
    png_ptr->warning_fn = warning_fn;
@@ -423,11 +319,10 @@ png_set_error_fn(png_structp png_ptr, png_voidp error_ptr,
  * pointer before png_write_destroy and png_read_destroy are called.
  */
 png_voidp PNGAPI
-png_get_error_ptr(png_const_structp png_ptr)
+png_get_error_ptr(png_structp png_ptr)
 {
    if (png_ptr == NULL)
       return NULL;
-
    return ((png_voidp)png_ptr->error_ptr);
 }
 
@@ -436,11 +331,10 @@ png_get_error_ptr(png_const_structp png_ptr)
 void PNGAPI
 png_set_strip_error_numbers(png_structp png_ptr, png_uint_32 strip_mode)
 {
-   if (png_ptr != NULL)
+   if(png_ptr != NULL)
    {
-      png_ptr->flags &=
+     png_ptr->flags &=
-         ((~(PNG_FLAG_STRIP_ERROR_NUMBERS |
+       ((~(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
-         PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
    }
 }
 #endif

pnggccrd.c

@@ -0,0 +1,101 @@
+/* pnggccrd.c was removed from libpng-1.2.20. */
+
+/* This code snippet is for use by configure's compilation test. */
+
+#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) && \
+    defined(PNG_MMX_CODE_SUPPORTED)
+int PNGAPI png_dummy_mmx_support(void);
+
+static int _mmx_supported = 2; // 0: no MMX; 1: MMX supported; 2: not tested
+
+int PNGAPI
+png_dummy_mmx_support(void) __attribute__((noinline));
+
+int PNGAPI
+png_dummy_mmx_support(void)
+{
+   int result;
+#if defined(PNG_MMX_CODE_SUPPORTED)  // superfluous, but what the heck
+    __asm__ __volatile__ (
+#if defined(__x86_64__)
+        "pushq %%rbx          \n\t"  // rbx gets clobbered by CPUID instruction
+        "pushq %%rcx          \n\t"  // so does rcx...
+        "pushq %%rdx          \n\t"  // ...and rdx (but rcx & rdx safe on Linux)
+        "pushfq               \n\t"  // save Eflag to stack
+        "popq %%rax           \n\t"  // get Eflag from stack into rax
+        "movq %%rax, %%rcx    \n\t"  // make another copy of Eflag in rcx
+        "xorl $0x200000, %%eax \n\t" // toggle ID bit in Eflag (i.e., bit 21)
+        "pushq %%rax          \n\t"  // save modified Eflag back to stack
+        "popfq                \n\t"  // restore modified value to Eflag reg
+        "pushfq               \n\t"  // save Eflag to stack
+        "popq %%rax           \n\t"  // get Eflag from stack
+        "pushq %%rcx          \n\t"  // save original Eflag to stack
+        "popfq                \n\t"  // restore original Eflag
+#else
+        "pushl %%ebx          \n\t"  // ebx gets clobbered by CPUID instruction
+        "pushl %%ecx          \n\t"  // so does ecx...
+        "pushl %%edx          \n\t"  // ...and edx (but ecx & edx safe on Linux)
+        "pushfl               \n\t"  // save Eflag to stack
+        "popl %%eax           \n\t"  // get Eflag from stack into eax
+        "movl %%eax, %%ecx    \n\t"  // make another copy of Eflag in ecx
+        "xorl $0x200000, %%eax \n\t" // toggle ID bit in Eflag (i.e., bit 21)
+        "pushl %%eax          \n\t"  // save modified Eflag back to stack
+        "popfl                \n\t"  // restore modified value to Eflag reg
+        "pushfl               \n\t"  // save Eflag to stack
+        "popl %%eax           \n\t"  // get Eflag from stack
+        "pushl %%ecx          \n\t"  // save original Eflag to stack
+        "popfl                \n\t"  // restore original Eflag
+#endif
+        "xorl %%ecx, %%eax    \n\t"  // compare new Eflag with original Eflag
+        "jz 0f                \n\t"  // if same, CPUID instr. is not supported
+
+        "xorl %%eax, %%eax    \n\t"  // set eax to zero
+//      ".byte  0x0f, 0xa2    \n\t"  // CPUID instruction (two-byte opcode)
+        "cpuid                \n\t"  // get the CPU identification info
+        "cmpl $1, %%eax       \n\t"  // make sure eax return non-zero value
+        "jl 0f                \n\t"  // if eax is zero, MMX is not supported
+
+        "xorl %%eax, %%eax    \n\t"  // set eax to zero and...
+        "incl %%eax           \n\t"  // ...increment eax to 1.  This pair is
+                                     // faster than the instruction "mov eax, 1"
+        "cpuid                \n\t"  // get the CPU identification info again
+        "andl $0x800000, %%edx \n\t" // mask out all bits but MMX bit (23)
+        "cmpl $0, %%edx       \n\t"  // 0 = MMX not supported
+        "jz 0f                \n\t"  // non-zero = yes, MMX IS supported
+
+        "movl $1, %%eax       \n\t"  // set return value to 1
+        "jmp  1f              \n\t"  // DONE:  have MMX support
+
+    "0:                       \n\t"  // .NOT_SUPPORTED: target label for jump instructions
+        "movl $0, %%eax       \n\t"  // set return value to 0
+    "1:                       \n\t"  // .RETURN: target label for jump instructions
+#if defined(__x86_64__)
+        "popq %%rdx           \n\t"  // restore rdx
+        "popq %%rcx           \n\t"  // restore rcx
+        "popq %%rbx           \n\t"  // restore rbx
+#else
+        "popl %%edx           \n\t"  // restore edx
+        "popl %%ecx           \n\t"  // restore ecx
+        "popl %%ebx           \n\t"  // restore ebx
+#endif
+
+//      "ret                  \n\t"  // DONE:  no MMX support
+                                     // (fall through to standard C "ret")
+
+        : "=a" (result)              // output list
+
+        :                            // any variables used on input (none)
+
+                                     // no clobber list
+//      , "%ebx", "%ecx", "%edx"     // GRR:  we handle these manually
+//      , "memory"   // if write to a variable gcc thought was in a reg
+//      , "cc"       // "condition codes" (flag bits)
+    );
+    _mmx_supported = result;
+#else
+    _mmx_supported = 0;
+#endif /* PNG_MMX_CODE_SUPPORTED */
+
+    return _mmx_supported;
+}
+#endif

pnginfo.h

@@ -1,270 +0,0 @@
-
-/* pnginfo.h - header file for PNG reference library
- *
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * Last changed in libpng 1.5.0 [January 6, 2011]
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
- /* png_info is a structure that holds the information in a PNG file so
- * that the application can find out the characteristics of the image.
- * If you are reading the file, this structure will tell you what is
- * in the PNG file.  If you are writing the file, fill in the information
- * you want to put into the PNG file, using png_set_*() functions, then
- * call png_write_info().
- *
- * The names chosen should be very close to the PNG specification, so
- * consult that document for information about the meaning of each field.
- *
- * With libpng < 0.95, it was only possible to directly set and read the
- * the values in the png_info_struct, which meant that the contents and
- * order of the values had to remain fixed.  With libpng 0.95 and later,
- * however, there are now functions that abstract the contents of
- * png_info_struct from the application, so this makes it easier to use
- * libpng with dynamic libraries, and even makes it possible to use
- * libraries that don't have all of the libpng ancillary chunk-handing
- * functionality.  In libpng-1.5.0 this was moved into a separate private
- * file that is not visible to applications.
- *
- * The following members may have allocated storage attached that should be
- * cleaned up before the structure is discarded: palette, trans, text,
- * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile,
- * splt_palettes, scal_unit, row_pointers, and unknowns.   By default, these
- * are automatically freed when the info structure is deallocated, if they were
- * allocated internally by libpng.  This behavior can be changed by means
- * of the png_data_freer() function.
- *
- * More allocation details: all the chunk-reading functions that
- * change these members go through the corresponding png_set_*
- * functions.  A function to clear these members is available: see
- * png_free_data().  The png_set_* functions do not depend on being
- * able to point info structure members to any of the storage they are
- * passed (they make their own copies), EXCEPT that the png_set_text
- * functions use the same storage passed to them in the text_ptr or
- * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns
- * functions do not make their own copies.
- */
-#ifndef PNGINFO_H
-#define PNGINFO_H
-
-struct png_info_def
-{
-   /* the following are necessary for every PNG file */
-   png_uint_32 width;  /* width of image in pixels (from IHDR) */
-   png_uint_32 height; /* height of image in pixels (from IHDR) */
-   png_uint_32 valid;  /* valid chunk data (see PNG_INFO_ below) */
-   png_size_t rowbytes; /* bytes needed to hold an untransformed row */
-   png_colorp palette;      /* array of color values (valid & PNG_INFO_PLTE) */
-   png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */
-   png_uint_16 num_trans;   /* number of transparent palette color (tRNS) */
-   png_byte bit_depth;      /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */
-   png_byte color_type;     /* see PNG_COLOR_TYPE_ below (from IHDR) */
-   /* The following three should have been named *_method not *_type */
-   png_byte compression_type; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */
-   png_byte filter_type;    /* must be PNG_FILTER_TYPE_BASE (from IHDR) */
-   png_byte interlace_type; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
-
-   /* The following is informational only on read, and not used on writes. */
-   png_byte channels;       /* number of data channels per pixel (1, 2, 3, 4) */
-   png_byte pixel_depth;    /* number of bits per pixel */
-   png_byte spare_byte;     /* to align the data, and for future use */
-   png_byte signature[8];   /* magic bytes read by libpng from start of file */
-
-   /* The rest of the data is optional.  If you are reading, check the
-    * valid field to see if the information in these are valid.  If you
-    * are writing, set the valid field to those chunks you want written,
-    * and initialize the appropriate fields below.
-    */
-
-#if defined(PNG_gAMA_SUPPORTED)
-   /* The gAMA chunk describes the gamma characteristics of the system
-    * on which the image was created, normally in the range [1.0, 2.5].
-    * Data is valid if (valid & PNG_INFO_gAMA) is non-zero.
-    */
-   png_fixed_point gamma;
-#endif
-
-#ifdef PNG_sRGB_SUPPORTED
-    /* GR-P, 0.96a */
-    /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */
-   png_byte srgb_intent; /* sRGB rendering intent [0, 1, 2, or 3] */
-#endif
-
-#ifdef PNG_TEXT_SUPPORTED
-   /* The tEXt, and zTXt chunks contain human-readable textual data in
-    * uncompressed, compressed, and optionally compressed forms, respectively.
-    * The data in "text" is an array of pointers to uncompressed,
-    * null-terminated C strings. Each chunk has a keyword that describes the
-    * textual data contained in that chunk.  Keywords are not required to be
-    * unique, and the text string may be empty.  Any number of text chunks may
-    * be in an image.
-    */
-   int num_text; /* number of comments read or comments to write */
-   int max_text; /* current size of text array */
-   png_textp text; /* array of comments read or comments to write */
-#endif /* PNG_TEXT_SUPPORTED */
-
-#ifdef PNG_tIME_SUPPORTED
-   /* The tIME chunk holds the last time the displayed image data was
-    * modified.  See the png_time struct for the contents of this struct.
-    */
-   png_time mod_time;
-#endif
-
-#ifdef PNG_sBIT_SUPPORTED
-   /* The sBIT chunk specifies the number of significant high-order bits
-    * in the pixel data.  Values are in the range [1, bit_depth], and are
-    * only specified for the channels in the pixel data.  The contents of
-    * the low-order bits is not specified.  Data is valid if
-    * (valid & PNG_INFO_sBIT) is non-zero.
-    */
-   png_color_8 sig_bit; /* significant bits in color channels */
-#endif
-
-#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \
-defined(PNG_READ_BACKGROUND_SUPPORTED)
-   /* The tRNS chunk supplies transparency data for paletted images and
-    * other image types that don't need a full alpha channel.  There are
-    * "num_trans" transparency values for a paletted image, stored in the
-    * same order as the palette colors, starting from index 0.  Values
-    * for the data are in the range [0, 255], ranging from fully transparent
-    * to fully opaque, respectively.  For non-paletted images, there is a
-    * single color specified that should be treated as fully transparent.
-    * Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
-    */
-   png_bytep trans;    /* alpha values for paletted image */
-   png_bytep trans_alpha;    /* alpha values for paletted image */
-   png_color_16 trans_color; /* transparent color for non-palette image */
-#endif
-
-#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
-   /* The bKGD chunk gives the suggested image background color if the
-    * display program does not have its own background color and the image
-    * is needs to composited onto a background before display.  The colors
-    * in "background" are normally in the same color space/depth as the
-    * pixel data.  Data is valid if (valid & PNG_INFO_bKGD) is non-zero.
-    */
-   png_color_16 background;
-#endif
-
-#ifdef PNG_oFFs_SUPPORTED
-   /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards
-    * and downwards from the top-left corner of the display, page, or other
-    * application-specific co-ordinate space.  See the PNG_OFFSET_ defines
-    * below for the unit types.  Valid if (valid & PNG_INFO_oFFs) non-zero.
-    */
-   png_int_32 x_offset; /* x offset on page */
-   png_int_32 y_offset; /* y offset on page */
-   png_byte offset_unit_type; /* offset units type */
-#endif
-
-#ifdef PNG_pHYs_SUPPORTED
-   /* The pHYs chunk gives the physical pixel density of the image for
-    * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_
-    * defines below).  Data is valid if (valid & PNG_INFO_pHYs) is non-zero.
-    */
-   png_uint_32 x_pixels_per_unit; /* horizontal pixel density */
-   png_uint_32 y_pixels_per_unit; /* vertical pixel density */
-   png_byte phys_unit_type; /* resolution type (see PNG_RESOLUTION_ below) */
-#endif
-
-#ifdef PNG_hIST_SUPPORTED
-   /* The hIST chunk contains the relative frequency or importance of the
-    * various palette entries, so that a viewer can intelligently select a
-    * reduced-color palette, if required.  Data is an array of "num_palette"
-    * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST)
-    * is non-zero.
-    */
-   png_uint_16p hist;
-#endif
-
-#ifdef PNG_cHRM_SUPPORTED
-   /* The cHRM chunk describes the CIE color characteristics of the monitor
-    * on which the PNG was created.  This data allows the viewer to do gamut
-    * mapping of the input image to ensure that the viewer sees the same
-    * colors in the image as the creator.  Values are in the range
-    * [0.0, 0.8].  Data valid if (valid & PNG_INFO_cHRM) non-zero.
-    */
-   png_fixed_point x_white;
-   png_fixed_point y_white;
-   png_fixed_point x_red;
-   png_fixed_point y_red;
-   png_fixed_point x_green;
-   png_fixed_point y_green;
-   png_fixed_point x_blue;
-   png_fixed_point y_blue;
-#endif
-
-#ifdef PNG_pCAL_SUPPORTED
-   /* The pCAL chunk describes a transformation between the stored pixel
-    * values and original physical data values used to create the image.
-    * The integer range [0, 2^bit_depth - 1] maps to the floating-point
-    * range given by [pcal_X0, pcal_X1], and are further transformed by a
-    * (possibly non-linear) transformation function given by "pcal_type"
-    * and "pcal_params" into "pcal_units".  Please see the PNG_EQUATION_
-    * defines below, and the PNG-Group's PNG extensions document for a
-    * complete description of the transformations and how they should be
-    * implemented, and for a description of the ASCII parameter strings.
-    * Data values are valid if (valid & PNG_INFO_pCAL) non-zero.
-    */
-   png_charp pcal_purpose;  /* pCAL chunk description string */
-   png_int_32 pcal_X0;      /* minimum value */
-   png_int_32 pcal_X1;      /* maximum value */
-   png_charp pcal_units;    /* Latin-1 string giving physical units */
-   png_charpp pcal_params;  /* ASCII strings containing parameter values */
-   png_byte pcal_type;      /* equation type (see PNG_EQUATION_ below) */
-   png_byte pcal_nparams;   /* number of parameters given in pcal_params */
-#endif
-
-/* New members added in libpng-1.0.6 */
-   png_uint_32 free_me;     /* flags items libpng is responsible for freeing */
-
-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \
- defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
-   /* Storage for unknown chunks that the library doesn't recognize. */
-   png_unknown_chunkp unknown_chunks;
-   int unknown_chunks_num;
-#endif
-
-#ifdef PNG_iCCP_SUPPORTED
-   /* iCCP chunk data. */
-   png_charp iccp_name;     /* profile name */
-   png_bytep iccp_profile;  /* International Color Consortium profile data */
-   png_uint_32 iccp_proflen;  /* ICC profile data length */
-   png_byte iccp_compression; /* Always zero */
-#endif
-
-#ifdef PNG_sPLT_SUPPORTED
-   /* Data on sPLT chunks (there may be more than one). */
-   png_sPLT_tp splt_palettes;
-   png_uint_32 splt_palettes_num;
-#endif
-
-#ifdef PNG_sCAL_SUPPORTED
-   /* The sCAL chunk describes the actual physical dimensions of the
-    * subject matter of the graphic.  The chunk contains a unit specification
-    * a byte value, and two ASCII strings representing floating-point
-    * values.  The values are width and height corresponsing to one pixel
-    * in the image.  Data values are valid if (valid & PNG_INFO_sCAL) is
-    * non-zero.
-    */
-   png_byte scal_unit;         /* unit of physical scale */
-   png_charp scal_s_width;     /* string containing height */
-   png_charp scal_s_height;    /* string containing width */
-#endif
-
-#ifdef PNG_INFO_IMAGE_SUPPORTED
-   /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS)
-      non-zero */
-   /* Data valid if (valid & PNG_INFO_IDAT) non-zero */
-   png_bytepp row_pointers;        /* the image bits */
-#endif
-
-};
-#endif /* PNGINFO_H */

pngmem.c

@@ -1,15 +1,12 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * Last changed in libpng 1.5.1 [February 3, 2011]
+ * Last changed in libpng 1.2.13 November 13, 2006
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2006 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
  * This file provides a location for all memory allocation.  Users who
  * need special memory handling are expected to supply replacement
  * functions for png_malloc() and png_free(), and to use
@@ -17,56 +14,52 @@
  * identify the replacement functions.
  */
 
-#include "pngpriv.h"
+#define PNG_INTERNAL
+#include "png.h"
 
 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
 
 /* Borland DOS special memory handler */
 #if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
-/* If you change this, be sure to change the one in png.h also */
+/* if you change this, be sure to change the one in png.h also */
 
 /* Allocate memory for a png_struct.  The malloc and memset can be replaced
    by a single call to calloc() if this is thought to improve performance. */
-PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_voidp /* PRIVATE */
-png_create_struct,(int type),PNG_ALLOCATED)
+png_create_struct(int type)
 {
-#  ifdef PNG_USER_MEM_SUPPORTED
+#ifdef PNG_USER_MEM_SUPPORTED
-   return (png_create_struct_2(type, NULL, NULL));
+   return (png_create_struct_2(type, png_malloc_ptr_NULL, png_voidp_NULL));
 }
 
 /* Alternate version of png_create_struct, for use with user-defined malloc. */
-PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_voidp /* PRIVATE */
-png_create_struct_2,(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr),
+png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
-   PNG_ALLOCATED)
 {
-#  endif /* PNG_USER_MEM_SUPPORTED */
+#endif /* PNG_USER_MEM_SUPPORTED */
    png_size_t size;
    png_voidp struct_ptr;
 
    if (type == PNG_STRUCT_INFO)
-      size = png_sizeof(png_info);
+     size = png_sizeof(png_info);
-
    else if (type == PNG_STRUCT_PNG)
-      size = png_sizeof(png_struct);
+     size = png_sizeof(png_struct);
-
    else
-      return (png_get_copyright(NULL));
+     return (png_get_copyright(NULL));
 
-#  ifdef PNG_USER_MEM_SUPPORTED
+#ifdef PNG_USER_MEM_SUPPORTED
-   if (malloc_fn != NULL)
+   if(malloc_fn != NULL)
    {
       png_struct dummy_struct;
       png_structp png_ptr = &dummy_struct;
       png_ptr->mem_ptr=mem_ptr;
       struct_ptr = (*(malloc_fn))(png_ptr, (png_uint_32)size);
    }
-
    else
-#  endif /* PNG_USER_MEM_SUPPORTED */
+#endif /* PNG_USER_MEM_SUPPORTED */
-   struct_ptr = (png_voidp)farmalloc(size);
+      struct_ptr = (png_voidp)farmalloc(size);
    if (struct_ptr != NULL)
       png_memset(struct_ptr, 0, size);
-
    return (struct_ptr);
 }
 
@@ -74,8 +67,8 @@ png_create_struct_2,(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr),
 void /* PRIVATE */
 png_destroy_struct(png_voidp struct_ptr)
 {
-#  ifdef PNG_USER_MEM_SUPPORTED
+#ifdef PNG_USER_MEM_SUPPORTED
-   png_destroy_struct_2(struct_ptr, NULL, NULL);
+   png_destroy_struct_2(struct_ptr, png_free_ptr_NULL, png_voidp_NULL);
 }
 
 /* Free memory allocated by a png_create_struct() call */
@@ -83,11 +76,11 @@ void /* PRIVATE */
 png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
     png_voidp mem_ptr)
 {
-#  endif
+#endif
    if (struct_ptr != NULL)
    {
-#  ifdef PNG_USER_MEM_SUPPORTED
+#ifdef PNG_USER_MEM_SUPPORTED
-      if (free_fn != NULL)
+      if(free_fn != NULL)
       {
          png_struct dummy_struct;
          png_structp png_ptr = &dummy_struct;
@@ -95,8 +88,7 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
          (*(free_fn))(png_ptr, struct_ptr);
          return;
       }
-
+#endif /* PNG_USER_MEM_SUPPORTED */
-#  endif /* PNG_USER_MEM_SUPPORTED */
       farfree (struct_ptr);
    }
 }
@@ -120,67 +112,50 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
  * result, we would be truncating potentially larger memory requests
  * (which should cause a fatal error) and introducing major problems.
  */
-PNG_FUNCTION(png_voidp,PNGAPI
-png_calloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
-{
-   png_voidp ret;
 
-   ret = (png_malloc(png_ptr, size));
+png_voidp PNGAPI
-
+png_malloc(png_structp png_ptr, png_uint_32 size)
-   if (ret != NULL)
-      png_memset(ret,0,(png_size_t)size);
-
-   return (ret);
-}
-
-PNG_FUNCTION(png_voidp,PNGAPI
-png_malloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
 {
    png_voidp ret;
 
    if (png_ptr == NULL || size == 0)
       return (NULL);
 
-#  ifdef PNG_USER_MEM_SUPPORTED
+#ifdef PNG_USER_MEM_SUPPORTED
-   if (png_ptr->malloc_fn != NULL)
+   if(png_ptr->malloc_fn != NULL)
-      ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
+       ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
-
    else
-      ret = (png_malloc_default(png_ptr, size));
+       ret = (png_malloc_default(png_ptr, size));
-
    if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
-       png_error(png_ptr, "Out of memory");
+       png_error(png_ptr, "Out of memory!");
-
    return (ret);
 }
 
-PNG_FUNCTION(png_voidp,PNGAPI
+png_voidp PNGAPI
-png_malloc_default,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
+png_malloc_default(png_structp png_ptr, png_uint_32 size)
 {
    png_voidp ret;
-#  endif /* PNG_USER_MEM_SUPPORTED */
+#endif /* PNG_USER_MEM_SUPPORTED */
 
    if (png_ptr == NULL || size == 0)
       return (NULL);
 
-#  ifdef PNG_MAX_MALLOC_64K
+#ifdef PNG_MAX_MALLOC_64K
    if (size > (png_uint_32)65536L)
    {
       png_warning(png_ptr, "Cannot Allocate > 64K");
       ret = NULL;
    }
-
    else
-#  endif
+#endif
 
    if (size != (size_t)size)
-      ret = NULL;
+     ret = NULL;
-
    else if (size == (png_uint_32)65536L)
    {
       if (png_ptr->offset_table == NULL)
       {
-         /* Try to see if we need to do any of this fancy stuff */
+         /* try to see if we need to do any of this fancy stuff */
          ret = farmalloc(size);
          if (ret == NULL || ((png_size_t)ret & 0xffff))
          {
@@ -196,15 +171,12 @@ png_malloc_default,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
                ret = NULL;
             }
 
-            if (png_ptr->zlib_window_bits > 14)
+            if(png_ptr->zlib_window_bits > 14)
                num_blocks = (int)(1 << (png_ptr->zlib_window_bits - 14));
-
             else
                num_blocks = 1;
-
             if (png_ptr->zlib_mem_level >= 7)
                num_blocks += (int)(1 << (png_ptr->zlib_mem_level - 7));
-
             else
                num_blocks++;
 
@@ -214,43 +186,40 @@ png_malloc_default,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
 
             if (table == NULL)
             {
-#  ifndef PNG_USER_MEM_SUPPORTED
+#ifndef PNG_USER_MEM_SUPPORTED
                if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
-                  png_error(png_ptr, "Out Of Memory"); /* Note "O", "M" */
+                  png_error(png_ptr, "Out Of Memory."); /* Note "O" and "M" */
-
                else
-                  png_warning(png_ptr, "Out Of Memory");
+                  png_warning(png_ptr, "Out Of Memory.");
-#  endif
+#endif
                return (NULL);
             }
 
             if ((png_size_t)table & 0xfff0)
             {
-#  ifndef PNG_USER_MEM_SUPPORTED
+#ifndef PNG_USER_MEM_SUPPORTED
                if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
                   png_error(png_ptr,
                     "Farmalloc didn't return normalized pointer");
-
                else
                   png_warning(png_ptr,
                     "Farmalloc didn't return normalized pointer");
-#  endif
+#endif
                return (NULL);
             }
 
             png_ptr->offset_table = table;
             png_ptr->offset_table_ptr = farmalloc(num_blocks *
-               png_sizeof(png_bytep));
+               png_sizeof (png_bytep));
 
             if (png_ptr->offset_table_ptr == NULL)
             {
-#  ifndef PNG_USER_MEM_SUPPORTED
+#ifndef PNG_USER_MEM_SUPPORTED
                if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
-                  png_error(png_ptr, "Out Of memory"); /* Note "O", "m" */
+                  png_error(png_ptr, "Out Of memory."); /* Note "O" and "M" */
-
                else
-                  png_warning(png_ptr, "Out Of memory");
+                  png_warning(png_ptr, "Out Of memory.");
-#  endif
+#endif
                return (NULL);
             }
 
@@ -260,7 +229,6 @@ png_malloc_default,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
                hptr = (png_byte huge *)((long)(hptr) & 0xfffffff0L);
                hptr = hptr + 16L;  /* "hptr += 16L" fails on Turbo C++ 3.0 */
             }
-
             for (i = 0; i < num_blocks; i++)
             {
                png_ptr->offset_table_ptr[i] = (png_bytep)hptr;
@@ -275,64 +243,57 @@ png_malloc_default,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
 
       if (png_ptr->offset_table_count >= png_ptr->offset_table_number)
       {
-#  ifndef PNG_USER_MEM_SUPPORTED
+#ifndef PNG_USER_MEM_SUPPORTED
          if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
-            png_error(png_ptr, "Out of Memory"); /* Note "o" and "M" */
+            png_error(png_ptr, "Out of Memory."); /* Note "o" and "M" */
-
          else
-            png_warning(png_ptr, "Out of Memory");
+            png_warning(png_ptr, "Out of Memory.");
-#  endif
+#endif
          return (NULL);
       }
 
       ret = png_ptr->offset_table_ptr[png_ptr->offset_table_count++];
    }
-
    else
       ret = farmalloc(size);
 
-#  ifndef PNG_USER_MEM_SUPPORTED
+#ifndef PNG_USER_MEM_SUPPORTED
    if (ret == NULL)
    {
       if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
-         png_error(png_ptr, "Out of memory"); /* Note "o" and "m" */
+         png_error(png_ptr, "Out of memory."); /* Note "o" and "m" */
-
       else
-         png_warning(png_ptr, "Out of memory"); /* Note "o" and "m" */
+         png_warning(png_ptr, "Out of memory."); /* Note "o" and "m" */
    }
-#  endif
+#endif
 
    return (ret);
 }
 
-/* Free a pointer allocated by png_malloc().  In the default
+/* free a pointer allocated by png_malloc().  In the default
- * configuration, png_ptr is not used, but is passed in case it
+   configuration, png_ptr is not used, but is passed in case it
- * is needed.  If ptr is NULL, return without taking any action.
+   is needed.  If ptr is NULL, return without taking any action. */
- */
 void PNGAPI
 png_free(png_structp png_ptr, png_voidp ptr)
 {
    if (png_ptr == NULL || ptr == NULL)
       return;
 
-#  ifdef PNG_USER_MEM_SUPPORTED
+#ifdef PNG_USER_MEM_SUPPORTED
    if (png_ptr->free_fn != NULL)
    {
       (*(png_ptr->free_fn))(png_ptr, ptr);
       return;
    }
-
+   else png_free_default(png_ptr, ptr);
-   else
-      png_free_default(png_ptr, ptr);
 }
 
 void PNGAPI
 png_free_default(png_structp png_ptr, png_voidp ptr)
 {
-#  endif /* PNG_USER_MEM_SUPPORTED */
+#endif /* PNG_USER_MEM_SUPPORTED */
 
-   if (png_ptr == NULL || ptr == NULL)
+   if(png_ptr == NULL) return;
-      return;
 
    if (png_ptr->offset_table != NULL)
    {
@@ -357,7 +318,9 @@ png_free_default(png_structp png_ptr, png_voidp ptr)
    }
 
    if (ptr != NULL)
+   {
       farfree(ptr);
+   }
 }
 
 #else /* Not the Borland DOS special memory handler */
@@ -365,58 +328,52 @@ png_free_default(png_structp png_ptr, png_voidp ptr)
 /* Allocate memory for a png_struct or a png_info.  The malloc and
    memset can be replaced by a single call to calloc() if this is thought
    to improve performance noticably. */
-PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_voidp /* PRIVATE */
-png_create_struct,(int type),PNG_ALLOCATED)
+png_create_struct(int type)
 {
-#  ifdef PNG_USER_MEM_SUPPORTED
+#ifdef PNG_USER_MEM_SUPPORTED
-   return (png_create_struct_2(type, NULL, NULL));
+   return (png_create_struct_2(type, png_malloc_ptr_NULL, png_voidp_NULL));
 }
 
 /* Allocate memory for a png_struct or a png_info.  The malloc and
    memset can be replaced by a single call to calloc() if this is thought
    to improve performance noticably. */
-PNG_FUNCTION(png_voidp /* PRIVATE */,
+png_voidp /* PRIVATE */
-png_create_struct_2,(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr),
+png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
-   PNG_ALLOCATED)
 {
-#  endif /* PNG_USER_MEM_SUPPORTED */
+#endif /* PNG_USER_MEM_SUPPORTED */
    png_size_t size;
    png_voidp struct_ptr;
 
    if (type == PNG_STRUCT_INFO)
       size = png_sizeof(png_info);
-
    else if (type == PNG_STRUCT_PNG)
       size = png_sizeof(png_struct);
-
    else
       return (NULL);
 
-#  ifdef PNG_USER_MEM_SUPPORTED
+#ifdef PNG_USER_MEM_SUPPORTED
-   if (malloc_fn != NULL)
+   if(malloc_fn != NULL)
    {
       png_struct dummy_struct;
       png_structp png_ptr = &dummy_struct;
       png_ptr->mem_ptr=mem_ptr;
       struct_ptr = (*(malloc_fn))(png_ptr, size);
-
       if (struct_ptr != NULL)
          png_memset(struct_ptr, 0, size);
-
       return (struct_ptr);
    }
-#  endif /* PNG_USER_MEM_SUPPORTED */
+#endif /* PNG_USER_MEM_SUPPORTED */
 
-#  if defined(__TURBOC__) && !defined(__FLAT__)
+#if defined(__TURBOC__) && !defined(__FLAT__)
    struct_ptr = (png_voidp)farmalloc(size);
-#  else
+#else
-#    if defined(_MSC_VER) && defined(MAXSEG_64K)
+# if defined(_MSC_VER) && defined(MAXSEG_64K)
-   struct_ptr = (png_voidp)halloc(size, 1);
+   struct_ptr = (png_voidp)halloc(size,1);
-#    else
+# else
    struct_ptr = (png_voidp)malloc(size);
-#    endif
+# endif
-#  endif
+#endif
-
    if (struct_ptr != NULL)
       png_memset(struct_ptr, 0, size);
 
@@ -428,8 +385,8 @@ png_create_struct_2,(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr),
 void /* PRIVATE */
 png_destroy_struct(png_voidp struct_ptr)
 {
-#  ifdef PNG_USER_MEM_SUPPORTED
+#ifdef PNG_USER_MEM_SUPPORTED
-   png_destroy_struct_2(struct_ptr, NULL, NULL);
+   png_destroy_struct_2(struct_ptr, png_free_ptr_NULL, png_voidp_NULL);
 }
 
 /* Free memory allocated by a png_create_struct() call */
@@ -437,11 +394,11 @@ void /* PRIVATE */
 png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
     png_voidp mem_ptr)
 {
-#  endif /* PNG_USER_MEM_SUPPORTED */
+#endif /* PNG_USER_MEM_SUPPORTED */
    if (struct_ptr != NULL)
    {
-#  ifdef PNG_USER_MEM_SUPPORTED
+#ifdef PNG_USER_MEM_SUPPORTED
-      if (free_fn != NULL)
+      if(free_fn != NULL)
       {
          png_struct dummy_struct;
          png_structp png_ptr = &dummy_struct;
@@ -449,182 +406,178 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
          (*(free_fn))(png_ptr, struct_ptr);
          return;
       }
-#  endif /* PNG_USER_MEM_SUPPORTED */
+#endif /* PNG_USER_MEM_SUPPORTED */
-#  if defined(__TURBOC__) && !defined(__FLAT__)
+#if defined(__TURBOC__) && !defined(__FLAT__)
       farfree(struct_ptr);
-
+#else
-#  else
+# if defined(_MSC_VER) && defined(MAXSEG_64K)
-#    if defined(_MSC_VER) && defined(MAXSEG_64K)
       hfree(struct_ptr);
-
+# else
-#    else
       free(struct_ptr);
-
+# endif
-#    endif
+#endif
-#  endif
    }
 }
 
 /* Allocate memory.  For reasonable files, size should never exceed
- * 64K.  However, zlib may allocate more then 64K if you don't tell
+   64K.  However, zlib may allocate more then 64K if you don't tell
- * it not to.  See zconf.h and png.h for more information.  zlib does
+   it not to.  See zconf.h and png.h for more information.  zlib does
- * need to allocate exactly 64K, so whatever you call here must
+   need to allocate exactly 64K, so whatever you call here must
- * have the ability to do that.
+   have the ability to do that. */
- */
 
-PNG_FUNCTION(png_voidp,PNGAPI
+png_voidp PNGAPI
-png_calloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
+png_malloc(png_structp png_ptr, png_uint_32 size)
 {
    png_voidp ret;
 
-   ret = (png_malloc(png_ptr, size));
+#ifdef PNG_USER_MEM_SUPPORTED
-
-   if (ret != NULL)
-      png_memset(ret,0,(png_size_t)size);
-
-   return (ret);
-}
-
-PNG_FUNCTION(png_voidp,PNGAPI
-png_malloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
-{
-   png_voidp ret;
-
-#  ifdef PNG_USER_MEM_SUPPORTED
    if (png_ptr == NULL || size == 0)
       return (NULL);
 
-   if (png_ptr->malloc_fn != NULL)
+   if(png_ptr->malloc_fn != NULL)
-      ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
+       ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
-
    else
-      ret = (png_malloc_default(png_ptr, size));
+       ret = (png_malloc_default(png_ptr, size));
-
    if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
-       png_error(png_ptr, "Out of Memory");
+       png_error(png_ptr, "Out of Memory!");
-
    return (ret);
 }
 
-PNG_FUNCTION(png_voidp,PNGAPI
+png_voidp PNGAPI
-png_malloc_default,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
+png_malloc_default(png_structp png_ptr, png_uint_32 size)
 {
    png_voidp ret;
-#  endif /* PNG_USER_MEM_SUPPORTED */
+#endif /* PNG_USER_MEM_SUPPORTED */
 
    if (png_ptr == NULL || size == 0)
       return (NULL);
 
-#  ifdef PNG_MAX_MALLOC_64K
+#ifdef PNG_MAX_MALLOC_64K
    if (size > (png_uint_32)65536L)
    {
-#    ifndef PNG_USER_MEM_SUPPORTED
+#ifndef PNG_USER_MEM_SUPPORTED
-      if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+      if(png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
          png_error(png_ptr, "Cannot Allocate > 64K");
-
       else
-#    endif
+#endif
          return NULL;
    }
-#  endif
+#endif
 
-   /* Check for overflow */
+ /* Check for overflow */
-#  if defined(__TURBOC__) && !defined(__FLAT__)
+#if defined(__TURBOC__) && !defined(__FLAT__)
+ if (size != (unsigned long)size)
+   ret = NULL;
+ else
+   ret = farmalloc(size);
+#else
+# if defined(_MSC_VER) && defined(MAXSEG_64K)
+ if (size != (unsigned long)size)
+   ret = NULL;
+ else
+   ret = halloc(size, 1);
+# else
+ if (size != (size_t)size)
+   ret = NULL;
+ else
+   ret = malloc((size_t)size);
+# endif
+#endif
 
-   if (size != (unsigned long)size)
+#ifndef PNG_USER_MEM_SUPPORTED
-      ret = NULL;
-
-   else
-      ret = farmalloc(size);
-
-#  else
-#    if defined(_MSC_VER) && defined(MAXSEG_64K)
-   if (size != (unsigned long)size)
-      ret = NULL;
-
-   else
-      ret = halloc(size, 1);
-
-#    else
-   if (size != (size_t)size)
-      ret = NULL;
-
-   else
-      ret = malloc((size_t)size);
-#    endif
-#  endif
-
-#  ifndef PNG_USER_MEM_SUPPORTED
    if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
       png_error(png_ptr, "Out of Memory");
-#  endif
+#endif
 
    return (ret);
 }
 
 /* Free a pointer allocated by png_malloc().  If ptr is NULL, return
- * without taking any action.
+   without taking any action. */
- */
 void PNGAPI
 png_free(png_structp png_ptr, png_voidp ptr)
 {
    if (png_ptr == NULL || ptr == NULL)
       return;
 
-#  ifdef PNG_USER_MEM_SUPPORTED
+#ifdef PNG_USER_MEM_SUPPORTED
    if (png_ptr->free_fn != NULL)
    {
       (*(png_ptr->free_fn))(png_ptr, ptr);
       return;
    }
-
+   else png_free_default(png_ptr, ptr);
-   else
-      png_free_default(png_ptr, ptr);
 }
-
 void PNGAPI
 png_free_default(png_structp png_ptr, png_voidp ptr)
 {
    if (png_ptr == NULL || ptr == NULL)
       return;
 
-#  endif /* PNG_USER_MEM_SUPPORTED */
+#endif /* PNG_USER_MEM_SUPPORTED */
 
-#  if defined(__TURBOC__) && !defined(__FLAT__)
+#if defined(__TURBOC__) && !defined(__FLAT__)
    farfree(ptr);
-
+#else
-#  else
+# if defined(_MSC_VER) && defined(MAXSEG_64K)
-#    if defined(_MSC_VER) && defined(MAXSEG_64K)
    hfree(ptr);
-
+# else
-#    else
    free(ptr);
-
+# endif
-#    endif
+#endif
-#  endif
 }
+
 #endif /* Not Borland DOS special memory handler */
 
+#if defined(PNG_1_0_X)
+#  define png_malloc_warn png_malloc
+#else
 /* This function was added at libpng version 1.2.3.  The png_malloc_warn()
  * function will set up png_malloc() to issue a png_warning and return NULL
  * instead of issuing a png_error, if it fails to allocate the requested
  * memory.
  */
-PNG_FUNCTION(png_voidp,PNGAPI
+png_voidp PNGAPI
-png_malloc_warn,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
+png_malloc_warn(png_structp png_ptr, png_uint_32 size)
 {
    png_voidp ptr;
    png_uint_32 save_flags;
-   if (png_ptr == NULL)
+   if(png_ptr == NULL) return (NULL);
-      return (NULL);
 
-   save_flags = png_ptr->flags;
+   save_flags=png_ptr->flags;
    png_ptr->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK;
    ptr = (png_voidp)png_malloc((png_structp)png_ptr, size);
    png_ptr->flags=save_flags;
    return(ptr);
 }
+#endif
 
+png_voidp PNGAPI
+png_memcpy_check (png_structp png_ptr, png_voidp s1, png_voidp s2,
+   png_uint_32 length)
+{
+   png_size_t size;
+
+   size = (png_size_t)length;
+   if ((png_uint_32)size != length)
+      png_error(png_ptr,"Overflow in png_memcpy_check.");
+
+   return(png_memcpy (s1, s2, size));
+}
+
+png_voidp PNGAPI
+png_memset_check (png_structp png_ptr, png_voidp s1, int value,
+   png_uint_32 length)
+{
+   png_size_t size;
+
+   size = (png_size_t)length;
+   if ((png_uint_32)size != length)
+      png_error(png_ptr,"Overflow in png_memset_check.");
+
+   return (png_memset (s1, value, size));
+
+}
 
 #ifdef PNG_USER_MEM_SUPPORTED
 /* This function is called when the application wants to use another method
@@ -634,11 +587,10 @@ void PNGAPI
 png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr
   malloc_fn, png_free_ptr free_fn)
 {
-   if (png_ptr != NULL)
+   if(png_ptr != NULL) {
-   {
+   png_ptr->mem_ptr = mem_ptr;
-      png_ptr->mem_ptr = mem_ptr;
+   png_ptr->malloc_fn = malloc_fn;
-      png_ptr->malloc_fn = malloc_fn;
+   png_ptr->free_fn = free_fn;
-      png_ptr->free_fn = free_fn;
    }
 }
 
@@ -647,11 +599,9 @@ png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr
  * pointer before png_write_destroy and png_read_destroy are called.
  */
 png_voidp PNGAPI
-png_get_mem_ptr(png_const_structp png_ptr)
+png_get_mem_ptr(png_structp png_ptr)
 {
-   if (png_ptr == NULL)
+   if(png_ptr == NULL) return (NULL);
-      return (NULL);
-
    return ((png_voidp)png_ptr->mem_ptr);
 }
 #endif /* PNG_USER_MEM_SUPPORTED */

pngrio.c

@@ -1,15 +1,12 @@
 
 /* pngrio.c - functions for data input
  *
- * Last changed in libpng 1.5.0 [January 6, 2011]
+ * Last changed in libpng 1.2.13 November 13, 2006
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2006 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
  * This file provides a location for all input.  Users who need
  * special handling are expected to write a function that has the same
  * arguments as this and performs a similar function, but that possibly
@@ -18,53 +15,54 @@
  * libpng use it at run time with png_set_read_fn(...).
  */
 
-#include "pngpriv.h"
+#define PNG_INTERNAL
+#include "png.h"
 
-#ifdef PNG_READ_SUPPORTED
+#if defined(PNG_READ_SUPPORTED)
 
 /* Read the data from whatever input you are using.  The default routine
- * reads from a file pointer.  Note that this routine sometimes gets called
+   reads from a file pointer.  Note that this routine sometimes gets called
- * with very small lengths, so you should implement some kind of simple
+   with very small lengths, so you should implement some kind of simple
- * buffering if you are using unbuffered reads.  This should never be asked
+   buffering if you are using unbuffered reads.  This should never be asked
- * to read more then 64K on a 16 bit machine.
+   to read more then 64K on a 16 bit machine. */
- */
 void /* PRIVATE */
 png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
-   png_debug1(4, "reading %d bytes", (int)length);
+   png_debug1(4,"reading %d bytes\n", (int)length);
-
    if (png_ptr->read_data_fn != NULL)
       (*(png_ptr->read_data_fn))(png_ptr, data, length);
-
    else
       png_error(png_ptr, "Call to NULL read function");
 }
 
-#ifdef PNG_STDIO_SUPPORTED
+#if !defined(PNG_NO_STDIO)
 /* This is the function that does the actual reading of data.  If you are
- * not reading from a standard C stream, you should create a replacement
+   not reading from a standard C stream, you should create a replacement
- * read_data function and use it at run time with png_set_read_fn(), rather
+   read_data function and use it at run time with png_set_read_fn(), rather
- * than changing the library.
+   than changing the library. */
- */
+#ifndef USE_FAR_KEYWORD
-#  ifndef USE_FAR_KEYWORD
+void PNGAPI
-void PNGCBAPI
 png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
    png_size_t check;
 
-   if (png_ptr == NULL)
+   if(png_ptr == NULL) return;
-      return;
-
    /* fread() returns 0 on error, so it is OK to store this in a png_size_t
     * instead of an int, which is what fread() actually returns.
     */
-   check = fread(data, 1, length, (png_FILE_p)png_ptr->io_ptr);
+#if defined(_WIN32_WCE)
+   if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
+      check = 0;
+#else
+   check = (png_size_t)fread(data, (png_size_t)1, length,
+      (png_FILE_p)png_ptr->io_ptr);
+#endif
 
    if (check != length)
       png_error(png_ptr, "Read Error");
 }
-#  else
+#else
-/* This is the model-independent version. Since the standard I/O library
+/* this is the model-independent version. Since the standard I/O library
    can't handle far buffers in the medium and small models, we have to copy
    the data.
 */
@@ -72,88 +70,80 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
 #define NEAR_BUF_SIZE 1024
 #define MIN(a,b) (a <= b ? a : b)
 
-static void PNGCBAPI
+static void PNGAPI
 png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
-   png_size_t check;
+   int check;
    png_byte *n_data;
    png_FILE_p io_ptr;
 
-   if (png_ptr == NULL)
+   if(png_ptr == NULL) return;
-      return;
-
    /* Check if data really is near. If so, use usual code. */
    n_data = (png_byte *)CVT_PTR_NOCHECK(data);
    io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
-
    if ((png_bytep)n_data == data)
    {
+#if defined(_WIN32_WCE)
+      if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
+         check = 0;
+#else
       check = fread(n_data, 1, length, io_ptr);
+#endif
    }
-
    else
    {
       png_byte buf[NEAR_BUF_SIZE];
       png_size_t read, remaining, err;
       check = 0;
       remaining = length;
-
       do
       {
          read = MIN(NEAR_BUF_SIZE, remaining);
-         err = fread(buf, 1, read, io_ptr);
+#if defined(_WIN32_WCE)
+         if ( !ReadFile((HANDLE)(io_ptr), buf, read, &err, NULL) )
+            err = 0;
+#else
+         err = fread(buf, (png_size_t)1, read, io_ptr);
+#endif
          png_memcpy(data, buf, read); /* copy far buffer to near buffer */
-
+         if(err != read)
-         if (err != read)
             break;
-
          else
             check += err;
-
          data += read;
          remaining -= read;
       }
       while (remaining != 0);
    }
-
    if ((png_uint_32)check != (png_uint_32)length)
       png_error(png_ptr, "read Error");
 }
-#  endif
+#endif
 #endif
 
 /* This function allows the application to supply a new input function
- * for libpng if standard C streams aren't being used.
+   for libpng if standard C streams aren't being used.
- *
+
- * This function takes as its arguments:
+   This function takes as its arguments:
- *
+   png_ptr      - pointer to a png input data structure
- * png_ptr      - pointer to a png input data structure
+   io_ptr       - pointer to user supplied structure containing info about
- *
+                  the input functions.  May be NULL.
- * io_ptr       - pointer to user supplied structure containing info about
+   read_data_fn - pointer to a new input function that takes as its
- *                the input functions.  May be NULL.
+                  arguments a pointer to a png_struct, a pointer to
- *
+                  a location where input data can be stored, and a 32-bit
- * read_data_fn - pointer to a new input function that takes as its
+                  unsigned int that is the number of bytes to be read.
- *                arguments a pointer to a png_struct, a pointer to
+                  To exit and output any fatal error messages the new write
- *                a location where input data can be stored, and a 32-bit
+                  function should call png_error(png_ptr, "Error msg"). */
- *                unsigned int that is the number of bytes to be read.
- *                To exit and output any fatal error messages the new write
- *                function should call png_error(png_ptr, "Error msg").
- *                May be NULL, in which case libpng's default function will
- *                be used.
- */
 void PNGAPI
 png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
    png_rw_ptr read_data_fn)
 {
-   if (png_ptr == NULL)
+   if(png_ptr == NULL) return;
-      return;
-
    png_ptr->io_ptr = io_ptr;
 
-#ifdef PNG_STDIO_SUPPORTED
+#if !defined(PNG_NO_STDIO)
    if (read_data_fn != NULL)
       png_ptr->read_data_fn = read_data_fn;
-
    else
       png_ptr->read_data_fn = png_default_read_data;
 #else
@@ -165,11 +155,12 @@ png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
    {
       png_ptr->write_data_fn = NULL;
       png_warning(png_ptr,
-          "Can't set both read_data_fn and write_data_fn in the"
+         "It's an error to set both read_data_fn and write_data_fn in the ");
-          " same structure");
+      png_warning(png_ptr,
+         "same structure.  Resetting write_data_fn to NULL.");
    }
 
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
+#if defined(PNG_WRITE_FLUSH_SUPPORTED)
    png_ptr->output_flush_fn = NULL;
 #endif
 }

pngstruct.h

@@ -1,308 +0,0 @@
-
-/* pngstruct.h - header file for PNG reference library
- *
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * Last changed in libpng 1.5.0 [January 6, 2011]
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-/* The structure that holds the information to read and write PNG files.
- * The only people who need to care about what is inside of this are the
- * people who will be modifying the library for their own special needs.
- * It should NOT be accessed directly by an application.
- */
-
-#ifndef PNGSTRUCT_H
-#define PNGSTRUCT_H
-/* zlib.h defines the structure z_stream, an instance of which is included
- * in this structure and is required for decompressing the LZ compressed
- * data in PNG files.
- */
-#include "zlib.h"
-
-struct png_struct_def
-{
-#ifdef PNG_SETJMP_SUPPORTED
-   jmp_buf png_jmpbuf;            /* used in png_error */
-   png_longjmp_ptr longjmp_fn;/* setjmp non-local goto function. */
-#endif
-   png_error_ptr error_fn;    /* function for printing errors and aborting */
-   png_error_ptr warning_fn;  /* function for printing warnings */
-   png_voidp error_ptr;       /* user supplied struct for error functions */
-   png_rw_ptr write_data_fn;  /* function for writing output data */
-   png_rw_ptr read_data_fn;   /* function for reading input data */
-   png_voidp io_ptr;          /* ptr to application struct for I/O functions */
-
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
-   png_user_transform_ptr read_user_transform_fn; /* user read transform */
-#endif
-
-#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
-   png_user_transform_ptr write_user_transform_fn; /* user write transform */
-#endif
-
-/* These were added in libpng-1.0.2 */
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
-    defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
-   png_voidp user_transform_ptr; /* user supplied struct for user transform */
-   png_byte user_transform_depth;    /* bit depth of user transformed pixels */
-   png_byte user_transform_channels; /* channels in user transformed pixels */
-#endif
-#endif
-
-   png_uint_32 mode;          /* tells us where we are in the PNG file */
-   png_uint_32 flags;         /* flags indicating various things to libpng */
-   png_uint_32 transformations; /* which transformations to perform */
-
-   z_stream zstream;          /* pointer to decompression structure (below) */
-   png_bytep zbuf;            /* buffer for zlib */
-   uInt zbuf_size;            /* size of zbuf (typically 65536) */
-   int zlib_level;            /* holds zlib compression level */
-   int zlib_method;           /* holds zlib compression method */
-   int zlib_window_bits;      /* holds zlib compression window bits */
-   int zlib_mem_level;        /* holds zlib compression memory level */
-   int zlib_strategy;         /* holds zlib compression strategy */
-
-   png_uint_32 width;         /* width of image in pixels */
-   png_uint_32 height;        /* height of image in pixels */
-   png_uint_32 num_rows;      /* number of rows in current pass */
-   png_uint_32 usr_width;     /* width of row at start of write */
-   png_size_t rowbytes;       /* size of row in bytes */
-   png_uint_32 iwidth;        /* width of current interlaced row in pixels */
-   png_uint_32 row_number;    /* current row in interlace pass */
-   png_bytep prev_row;        /* buffer to save previous (unfiltered) row */
-   png_bytep row_buf;         /* buffer to save current (unfiltered) row */
-   png_bytep sub_row;         /* buffer to save "sub" row when filtering */
-   png_bytep up_row;          /* buffer to save "up" row when filtering */
-   png_bytep avg_row;         /* buffer to save "avg" row when filtering */
-   png_bytep paeth_row;       /* buffer to save "Paeth" row when filtering */
-   png_row_info row_info;     /* used for transformation routines */
-
-   png_uint_32 idat_size;     /* current IDAT size for read */
-   png_uint_32 crc;           /* current chunk CRC value */
-   png_colorp palette;        /* palette from the input file */
-   png_uint_16 num_palette;   /* number of color entries in palette */
-   png_uint_16 num_trans;     /* number of transparency values */
-   png_byte chunk_name[5];    /* null-terminated name of current chunk */
-   png_byte compression;      /* file compression type (always 0) */
-   png_byte filter;           /* file filter type (always 0) */
-   png_byte interlaced;       /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
-   png_byte pass;             /* current interlace pass (0 - 6) */
-   png_byte do_filter;        /* row filter flags (see PNG_FILTER_ below ) */
-   png_byte color_type;       /* color type of file */
-   png_byte bit_depth;        /* bit depth of file */
-   png_byte usr_bit_depth;    /* bit depth of users row */
-   png_byte pixel_depth;      /* number of bits per pixel */
-   png_byte channels;         /* number of channels in file */
-   png_byte usr_channels;     /* channels at start of write */
-   png_byte sig_bytes;        /* magic bytes read/written from start of file */
-
-#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
-   png_uint_16 filler;           /* filler bytes for pixel expansion */
-#endif
-
-#ifdef PNG_bKGD_SUPPORTED
-   png_byte background_gamma_type;
-   png_fixed_point background_gamma;
-   png_color_16 background;   /* background color in screen gamma space */
-#ifdef PNG_READ_GAMMA_SUPPORTED
-   png_color_16 background_1; /* background normalized to gamma 1.0 */
-#endif
-#endif /* PNG_bKGD_SUPPORTED */
-
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
-   png_flush_ptr output_flush_fn; /* Function for flushing output */
-   png_uint_32 flush_dist;    /* how many rows apart to flush, 0 - no flush */
-   png_uint_32 flush_rows;    /* number of rows written since last flush */
-#endif
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
-   int gamma_shift;      /* number of "insignificant" bits in 16-bit gamma */
-   png_fixed_point gamma;        /* file gamma value */
-   png_fixed_point screen_gamma; /* screen gamma value (display_exponent) */
-#endif
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
-   png_bytep gamma_table;     /* gamma table for 8-bit depth files */
-   png_bytep gamma_from_1;    /* converts from 1.0 to screen */
-   png_bytep gamma_to_1;      /* converts from file to 1.0 */
-   png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */
-   png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */
-   png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */
-#endif
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED)
-   png_color_8 sig_bit;       /* significant bits in each available channel */
-#endif
-
-#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
-   png_color_8 shift;         /* shift for significant bit tranformation */
-#endif
-
-#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \
- || defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
-   png_bytep trans_alpha;           /* alpha values for paletted files */
-   png_color_16 trans_color;  /* transparent color for non-paletted files */
-#endif
-
-   png_read_status_ptr read_row_fn;   /* called after each row is decoded */
-   png_write_status_ptr write_row_fn; /* called after each row is encoded */
-#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-   png_progressive_info_ptr info_fn; /* called after header data fully read */
-   png_progressive_row_ptr row_fn;   /* called after a prog. row is decoded */
-   png_progressive_end_ptr end_fn;   /* called after image is complete */
-   png_bytep save_buffer_ptr;        /* current location in save_buffer */
-   png_bytep save_buffer;            /* buffer for previously read data */
-   png_bytep current_buffer_ptr;     /* current location in current_buffer */
-   png_bytep current_buffer;         /* buffer for recently used data */
-   png_uint_32 push_length;          /* size of current input chunk */
-   png_uint_32 skip_length;          /* bytes to skip in input data */
-   png_size_t save_buffer_size;      /* amount of data now in save_buffer */
-   png_size_t save_buffer_max;       /* total size of save_buffer */
-   png_size_t buffer_size;           /* total amount of available input data */
-   png_size_t current_buffer_size;   /* amount of data now in current_buffer */
-   int process_mode;                 /* what push library is currently doing */
-   int cur_palette;                  /* current push library palette index */
-
-#  ifdef PNG_TEXT_SUPPORTED
-     png_size_t current_text_size;   /* current size of text input data */
-     png_size_t current_text_left;   /* how much text left to read in input */
-     png_charp current_text;         /* current text chunk buffer */
-     png_charp current_text_ptr;     /* current location in current_text */
-#  endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */
-
-#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
-
-#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
-/* For the Borland special 64K segment handler */
-   png_bytepp offset_table_ptr;
-   png_bytep offset_table;
-   png_uint_16 offset_table_number;
-   png_uint_16 offset_table_count;
-   png_uint_16 offset_table_count_free;
-#endif
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-   png_bytep palette_lookup; /* lookup table for quantizing */
-   png_bytep quantize_index; /* index translation for palette files */
-#endif
-
-#if defined(PNG_READ_QUANTIZE_SUPPORTED) || defined(PNG_hIST_SUPPORTED)
-   png_uint_16p hist;                /* histogram */
-#endif
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
-   png_byte heuristic_method;        /* heuristic for row filter selection */
-   png_byte num_prev_filters;        /* number of weights for previous rows */
-   png_bytep prev_filters;           /* filter type(s) of previous row(s) */
-   png_uint_16p filter_weights;      /* weight(s) for previous line(s) */
-   png_uint_16p inv_filter_weights;  /* 1/weight(s) for previous line(s) */
-   png_uint_16p filter_costs;        /* relative filter calculation cost */
-   png_uint_16p inv_filter_costs;    /* 1/relative filter calculation cost */
-#endif
-
-#ifdef PNG_TIME_RFC1123_SUPPORTED
-   png_charp time_buffer; /* String to hold RFC 1123 time text */
-#endif
-
-/* New members added in libpng-1.0.6 */
-
-   png_uint_32 free_me;    /* flags items libpng is responsible for freeing */
-
-#ifdef PNG_USER_CHUNKS_SUPPORTED
-   png_voidp user_chunk_ptr;
-   png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */
-#endif
-
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-   int num_chunk_list;
-   png_bytep chunk_list;
-#endif
-
-/* New members added in libpng-1.0.3 */
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-   png_byte rgb_to_gray_status;
-   /* These were changed from png_byte in libpng-1.0.6 */
-   png_uint_16 rgb_to_gray_red_coeff;
-   png_uint_16 rgb_to_gray_green_coeff;
-   png_uint_16 rgb_to_gray_blue_coeff;
-#endif
-
-/* New member added in libpng-1.0.4 (renamed in 1.0.9) */
-#if defined(PNG_MNG_FEATURES_SUPPORTED) || \
-    defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
-    defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
-/* Changed from png_byte to png_uint_32 at version 1.2.0 */
-   png_uint_32 mng_features_permitted;
-#endif
-
-/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */
-#ifdef PNG_MNG_FEATURES_SUPPORTED
-   png_byte filter_type;
-#endif
-
-/* New members added in libpng-1.2.0 */
-
-/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
-#ifdef PNG_USER_MEM_SUPPORTED
-   png_voidp mem_ptr;             /* user supplied struct for mem functions */
-   png_malloc_ptr malloc_fn;      /* function for allocating memory */
-   png_free_ptr free_fn;          /* function for freeing memory */
-#endif
-
-/* New member added in libpng-1.0.13 and 1.2.0 */
-   png_bytep big_row_buf;         /* buffer to save current (unfiltered) row */
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-/* The following three members were added at version 1.0.14 and 1.2.4 */
-   png_bytep quantize_sort;          /* working sort array */
-   png_bytep index_to_palette;       /* where the original index currently is
-                                        in the palette */
-   png_bytep palette_to_index;       /* which original index points to this
-                                         palette color */
-#endif
-
-/* New members added in libpng-1.0.16 and 1.2.6 */
-   png_byte compression_type;
-
-#ifdef PNG_USER_LIMITS_SUPPORTED
-   png_uint_32 user_width_max;
-   png_uint_32 user_height_max;
-
-   /* Added in libpng-1.4.0: Total number of sPLT, text, and unknown
-    * chunks that can be stored (0 means unlimited).
-    */
-   png_uint_32 user_chunk_cache_max;
-
-   /* Total memory that a zTXt, sPLT, iTXt, iCCP, or unknown chunk
-    * can occupy when decompressed.  0 means unlimited.
-    */
-   png_alloc_size_t user_chunk_malloc_max;
-#endif
-
-/* New member added in libpng-1.0.25 and 1.2.17 */
-#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
-   /* Storage for unknown chunk that the library doesn't recognize. */
-   png_unknown_chunk unknown_chunk;
-#endif
-
-/* New members added in libpng-1.2.26 */
-  png_size_t old_big_row_buf_size;
-  png_size_t old_prev_row_size;
-
-/* New member added in libpng-1.2.30 */
-  png_charp chunkdata;  /* buffer for reading chunk data */
-
-#ifdef PNG_IO_STATE_SUPPORTED
-/* New member added in libpng-1.4.0 */
-   png_uint_32 io_state;
-#endif
-};
-#endif /* PNGSTRUCT_H */

pngtrans.c

@@ -1,59 +1,47 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * Last changed in libpng 1.5.2 [March 31, 2011]
+ * Last changed in libpng 1.2.17 May 15, 2007
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
  */
 
-#include "pngpriv.h"
+#define PNG_INTERNAL
+#include "png.h"
 
 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-
 #if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
-/* Turn on BGR-to-RGB mapping */
+/* turn on BGR-to-RGB mapping */
 void PNGAPI
 png_set_bgr(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_bgr");
+   png_debug(1, "in png_set_bgr\n");
-
+   if(png_ptr == NULL) return;
-   if (png_ptr == NULL)
-      return;
-
    png_ptr->transformations |= PNG_BGR;
 }
 #endif
 
 #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
-/* Turn on 16 bit byte swapping */
+/* turn on 16 bit byte swapping */
 void PNGAPI
 png_set_swap(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_swap");
+   png_debug(1, "in png_set_swap\n");
-
+   if(png_ptr == NULL) return;
-   if (png_ptr == NULL)
-      return;
-
    if (png_ptr->bit_depth == 16)
       png_ptr->transformations |= PNG_SWAP_BYTES;
 }
 #endif
 
 #if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
-/* Turn on pixel packing */
+/* turn on pixel packing */
 void PNGAPI
 png_set_packing(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_packing");
+   png_debug(1, "in png_set_packing\n");
-
+   if(png_ptr == NULL) return;
-   if (png_ptr == NULL)
-      return;
-
    if (png_ptr->bit_depth < 8)
    {
       png_ptr->transformations |= PNG_PACK;
@@ -63,15 +51,12 @@ png_set_packing(png_structp png_ptr)
 #endif
 
 #if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
-/* Turn on packed pixel swapping */
+/* turn on packed pixel swapping */
 void PNGAPI
 png_set_packswap(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_packswap");
+   png_debug(1, "in png_set_packswap\n");
-
+   if(png_ptr == NULL) return;
-   if (png_ptr == NULL)
-      return;
-
    if (png_ptr->bit_depth < 8)
       png_ptr->transformations |= PNG_PACKSWAP;
 }
@@ -79,13 +64,10 @@ png_set_packswap(png_structp png_ptr)
 
 #if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
 void PNGAPI
-png_set_shift(png_structp png_ptr, png_const_color_8p true_bits)
+png_set_shift(png_structp png_ptr, png_color_8p true_bits)
 {
-   png_debug(1, "in png_set_shift");
+   png_debug(1, "in png_set_shift\n");
-
+   if(png_ptr == NULL) return;
-   if (png_ptr == NULL)
-      return;
-
    png_ptr->transformations |= PNG_SHIFT;
    png_ptr->shift = *true_bits;
 }
@@ -96,8 +78,7 @@ png_set_shift(png_structp png_ptr, png_const_color_8p true_bits)
 int PNGAPI
 png_set_interlace_handling(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_interlace handling");
+   png_debug(1, "in png_set_interlace handling\n");
-
    if (png_ptr && png_ptr->interlaced)
    {
       png_ptr->transformations |= PNG_INTERLACE;
@@ -117,17 +98,12 @@ png_set_interlace_handling(png_structp png_ptr)
 void PNGAPI
 png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
 {
-   png_debug(1, "in png_set_filler");
+   png_debug(1, "in png_set_filler\n");
-
+   if(png_ptr == NULL) return;
-   if (png_ptr == NULL)
-      return;
-
    png_ptr->transformations |= PNG_FILLER;
-   png_ptr->filler = (png_uint_16)filler;
+   png_ptr->filler = (png_byte)filler;
-
    if (filler_loc == PNG_FILLER_AFTER)
       png_ptr->flags |= PNG_FLAG_FILLER_AFTER;
-
    else
       png_ptr->flags &= ~PNG_FLAG_FILLER_AFTER;
 
@@ -142,7 +118,7 @@ png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
    }
 
    /* Also I added this in libpng-1.0.2a (what happens when we expand
-    * a less-than-8-bit grayscale to GA?) */
+    * a less-than-8-bit grayscale to GA? */
 
    if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY && png_ptr->bit_depth >= 8)
    {
@@ -150,18 +126,17 @@ png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
    }
 }
 
+#if !defined(PNG_1_0_X)
 /* Added to libpng-1.2.7 */
 void PNGAPI
 png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
 {
-   png_debug(1, "in png_set_add_alpha");
+   png_debug(1, "in png_set_add_alpha\n");
-
+   if(png_ptr == NULL) return;
-   if (png_ptr == NULL)
-      return;
-
    png_set_filler(png_ptr, filler, filler_loc);
    png_ptr->transformations |= PNG_ADD_ALPHA;
 }
+#endif
 
 #endif
 
@@ -170,11 +145,8 @@ png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
 void PNGAPI
 png_set_swap_alpha(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_swap_alpha");
+   png_debug(1, "in png_set_swap_alpha\n");
-
+   if(png_ptr == NULL) return;
-   if (png_ptr == NULL)
-      return;
-
    png_ptr->transformations |= PNG_SWAP_ALPHA;
 }
 #endif
@@ -184,11 +156,8 @@ png_set_swap_alpha(png_structp png_ptr)
 void PNGAPI
 png_set_invert_alpha(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_invert_alpha");
+   png_debug(1, "in png_set_invert_alpha\n");
-
+   if(png_ptr == NULL) return;
-   if (png_ptr == NULL)
-      return;
-
    png_ptr->transformations |= PNG_INVERT_ALPHA;
 }
 #endif
@@ -197,28 +166,28 @@ png_set_invert_alpha(png_structp png_ptr)
 void PNGAPI
 png_set_invert_mono(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_invert_mono");
+   png_debug(1, "in png_set_invert_mono\n");
-
+   if(png_ptr == NULL) return;
-   if (png_ptr == NULL)
-      return;
-
    png_ptr->transformations |= PNG_INVERT_MONO;
 }
 
-/* Invert monochrome grayscale data */
+/* invert monochrome grayscale data */
 void /* PRIVATE */
 png_do_invert(png_row_infop row_info, png_bytep row)
 {
-   png_debug(1, "in png_do_invert");
+   png_debug(1, "in png_do_invert\n");
-
   /* This test removed from libpng version 1.0.13 and 1.2.0:
    *   if (row_info->bit_depth == 1 &&
    */
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
+   if (row == NULL || row_info == NULL)
+     return;
+#endif
    if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
    {
       png_bytep rp = row;
-      png_size_t i;
+      png_uint_32 i;
-      png_size_t istop = row_info->rowbytes;
+      png_uint_32 istop = row_info->rowbytes;
 
       for (i = 0; i < istop; i++)
       {
@@ -226,49 +195,47 @@ png_do_invert(png_row_infop row_info, png_bytep row)
          rp++;
       }
    }
-
    else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
       row_info->bit_depth == 8)
    {
       png_bytep rp = row;
-      png_size_t i;
+      png_uint_32 i;
-      png_size_t istop = row_info->rowbytes;
+      png_uint_32 istop = row_info->rowbytes;
 
-      for (i = 0; i < istop; i += 2)
+      for (i = 0; i < istop; i+=2)
       {
          *rp = (png_byte)(~(*rp));
-         rp += 2;
+         rp+=2;
       }
    }
-
-#ifdef PNG_16BIT_SUPPORTED
    else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
       row_info->bit_depth == 16)
    {
       png_bytep rp = row;
-      png_size_t i;
+      png_uint_32 i;
-      png_size_t istop = row_info->rowbytes;
+      png_uint_32 istop = row_info->rowbytes;
 
-      for (i = 0; i < istop; i += 4)
+      for (i = 0; i < istop; i+=4)
       {
          *rp = (png_byte)(~(*rp));
-         *(rp + 1) = (png_byte)(~(*(rp + 1)));
+         *(rp+1) = (png_byte)(~(*(rp+1)));
-         rp += 4;
+         rp+=4;
       }
    }
-#endif
 }
 #endif
 
-#ifdef PNG_16BIT_SUPPORTED
 #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
-/* Swaps byte order on 16 bit depth images */
+/* swaps byte order on 16 bit depth images */
 void /* PRIVATE */
 png_do_swap(png_row_infop row_info, png_bytep row)
 {
-   png_debug(1, "in png_do_swap");
+   png_debug(1, "in png_do_swap\n");
-
+   if (
-   if (row_info->bit_depth == 16)
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
+       row != NULL && row_info != NULL &&
+#endif
+       row_info->bit_depth == 16)
    {
       png_bytep rp = row;
       png_uint_32 i;
@@ -283,7 +250,6 @@ png_do_swap(png_row_infop row_info, png_bytep row)
    }
 }
 #endif
-#endif
 
 #if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
 static PNG_CONST png_byte onebppswaptable[256] = {
@@ -391,28 +357,27 @@ static PNG_CONST png_byte fourbppswaptable[256] = {
    0x8F, 0x9F, 0xAF, 0xBF, 0xCF, 0xDF, 0xEF, 0xFF
 };
 
-/* Swaps pixel packing order within bytes */
+/* swaps pixel packing order within bytes */
 void /* PRIVATE */
 png_do_packswap(png_row_infop row_info, png_bytep row)
 {
-   png_debug(1, "in png_do_packswap");
+   png_debug(1, "in png_do_packswap\n");
-
+   if (
-   if (row_info->bit_depth < 8)
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
+       row != NULL && row_info != NULL &&
+#endif
+       row_info->bit_depth < 8)
    {
-      png_bytep rp;
+      png_bytep rp, end, table;
-      png_const_bytep end, table;
 
       end = row + row_info->rowbytes;
 
       if (row_info->bit_depth == 1)
-         table = onebppswaptable;
+         table = (png_bytep)onebppswaptable;
-
       else if (row_info->bit_depth == 2)
-         table = twobppswaptable;
+         table = (png_bytep)twobppswaptable;
-
       else if (row_info->bit_depth == 4)
-         table = fourbppswaptable;
+         table = (png_bytep)fourbppswaptable;
-
       else
          return;
 
@@ -424,126 +389,174 @@ png_do_packswap(png_row_infop row_info, png_bytep row)
 
 #if defined(PNG_WRITE_FILLER_SUPPORTED) || \
     defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
-/* Remove a channel - this used to be 'png_do_strip_filler' but it used a
+/* remove filler or alpha byte(s) */
- * somewhat weird combination of flags to determine what to do.  All the calls
- * to png_do_strip_filler are changed in 1.5.2 to call this instead with the
- * correct arguments.
- *
- * The routine isn't general - the channel must be the channel at the start or
- * end (not in the middle) of each pixel.
- */
 void /* PRIVATE */
-png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
+png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
 {
-   png_bytep sp = row; /* source pointer */
+   png_debug(1, "in png_do_strip_filler\n");
-   png_bytep dp = row; /* destination pointer */
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
-   png_bytep ep = row + row_info->rowbytes; /* One beyond end of row */
+   if (row != NULL && row_info != NULL)
-
+#endif
-   /* At the start sp will point to the first byte to copy and dp to where
-    * it is copied to.  ep always points just beyond the end of the row, so
-    * the loop simply copies (channels-1) channels until sp reaches ep.
-    */
-   /* GA, GX, XG cases */
-   if (row_info->channels == 2)
    {
-      if (row_info->bit_depth == 8)
+      png_bytep sp=row;
+      png_bytep dp=row;
+      png_uint_32 row_width=row_info->width;
+      png_uint_32 i;
+
+      if ((row_info->color_type == PNG_COLOR_TYPE_RGB ||
+         (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
+         (flags & PNG_FLAG_STRIP_ALPHA))) &&
+         row_info->channels == 4)
       {
-         if (at_start) /* Skip initial filler */
+         if (row_info->bit_depth == 8)
-            ++sp;
-         else          /* Skip initial channels and, for sp, the filler */
-            sp += 2, ++dp;
-
-         /* For a 1 pixel wide image there is nothing to do */
-         while (sp < ep)
-            *dp++ = *sp, sp += 2;
-
-         row_info->pixel_depth = 8;
-      }
-
-      else if (row_info->bit_depth == 16)
-      {
-         if (at_start)
-            sp += 2;
-         else
-            sp += 4, dp += 2;
-
-         while (sp < ep)
-            *dp++ = *sp++, *dp++ = *sp, sp += 3;
-
-         row_info->pixel_depth = 16;
-      }
-
-      else
-         return; /* bad bit depth */
-
-      row_info->channels = 1;
-
-      /* Finally fix the color type if it records an alpha channel */
-      if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
-         row_info->color_type = PNG_COLOR_TYPE_GRAY;
-   }
-
-   /* RGBA, RGBX, XRGB cases */
-   else if (row_info->channels == 4)
-   {
-      if (row_info->bit_depth == 8)
-      {
-         if (at_start) /* Skip initial filler */
-            ++sp;
-         else          /* Skip initial channels and, for sp, the filler */
-            sp += 4, dp += 3;
-
-         /* Note that the loop adds 3 to dp and 4 to sp each time. */
-         while (sp < ep)
-            *dp++ = *sp++, *dp++ = *sp++, *dp++ = *sp, sp += 2;
-
-         row_info->pixel_depth = 24;
-      }
-
-      else if (row_info->bit_depth == 16)
-      {
-         if (at_start)
-            sp += 2;
-         else
-            sp += 8, dp += 6;
-
-         while (sp < ep)
          {
-            /* Copy 6 bytes, skip 2 */
+            /* This converts from RGBX or RGBA to RGB */
-            *dp++ = *sp++, *dp++ = *sp++;
+            if (flags & PNG_FLAG_FILLER_AFTER)
-            *dp++ = *sp++, *dp++ = *sp++;
+            {
-            *dp++ = *sp++, *dp++ = *sp, sp += 3;
+               dp+=3; sp+=4;
+               for (i = 1; i < row_width; i++)
+               {
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+                  sp++;
+               }
+            }
+            /* This converts from XRGB or ARGB to RGB */
+            else
+            {
+               for (i = 0; i < row_width; i++)
+               {
+                  sp++;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+               }
+            }
+            row_info->pixel_depth = 24;
+            row_info->rowbytes = row_width * 3;
          }
+         else /* if (row_info->bit_depth == 16) */
+         {
+            if (flags & PNG_FLAG_FILLER_AFTER)
+            {
+               /* This converts from RRGGBBXX or RRGGBBAA to RRGGBB */
+               sp += 8; dp += 6;
+               for (i = 1; i < row_width; i++)
+               {
+                  /* This could be (although png_memcpy is probably slower):
+                  png_memcpy(dp, sp, 6);
+                  sp += 8;
+                  dp += 6;
+                  */
 
-         row_info->pixel_depth = 48;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+                  sp += 2;
+               }
+            }
+            else
+            {
+               /* This converts from XXRRGGBB or AARRGGBB to RRGGBB */
+               for (i = 0; i < row_width; i++)
+               {
+                  /* This could be (although png_memcpy is probably slower):
+                  png_memcpy(dp, sp, 6);
+                  sp += 8;
+                  dp += 6;
+                  */
+
+                  sp+=2;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+               }
+            }
+            row_info->pixel_depth = 48;
+            row_info->rowbytes = row_width * 6;
+         }
+         row_info->channels = 3;
       }
-
+      else if ((row_info->color_type == PNG_COLOR_TYPE_GRAY ||
-      else
+         (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
-         return; /* bad bit depth */
+         (flags & PNG_FLAG_STRIP_ALPHA))) &&
-
+          row_info->channels == 2)
-      row_info->channels = 3;
+      {
-
+         if (row_info->bit_depth == 8)
-      /* Finally fix the color type if it records an alpha channel */
+         {
-      if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
+            /* This converts from GX or GA to G */
-         row_info->color_type = PNG_COLOR_TYPE_RGB;
+            if (flags & PNG_FLAG_FILLER_AFTER)
+            {
+               for (i = 0; i < row_width; i++)
+               {
+                  *dp++ = *sp++;
+                  sp++;
+               }
+            }
+            /* This converts from XG or AG to G */
+            else
+            {
+               for (i = 0; i < row_width; i++)
+               {
+                  sp++;
+                  *dp++ = *sp++;
+               }
+            }
+            row_info->pixel_depth = 8;
+            row_info->rowbytes = row_width;
+         }
+         else /* if (row_info->bit_depth == 16) */
+         {
+            if (flags & PNG_FLAG_FILLER_AFTER)
+            {
+               /* This converts from GGXX or GGAA to GG */
+               sp += 4; dp += 2;
+               for (i = 1; i < row_width; i++)
+               {
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+                  sp += 2;
+               }
+            }
+            else
+            {
+               /* This converts from XXGG or AAGG to GG */
+               for (i = 0; i < row_width; i++)
+               {
+                  sp += 2;
+                  *dp++ = *sp++;
+                  *dp++ = *sp++;
+               }
+            }
+            row_info->pixel_depth = 16;
+            row_info->rowbytes = row_width * 2;
+         }
+         row_info->channels = 1;
+      }
+      if (flags & PNG_FLAG_STRIP_ALPHA)
+        row_info->color_type &= ~PNG_COLOR_MASK_ALPHA;
    }
-
-   else
-      return; /* The filler channel has gone already */
-
-   /* Fix the rowbytes value. */
-   row_info->rowbytes = dp-row;
 }
 #endif
 
 #if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
-/* Swaps red and blue bytes within a pixel */
+/* swaps red and blue bytes within a pixel */
 void /* PRIVATE */
 png_do_bgr(png_row_infop row_info, png_bytep row)
 {
-   png_debug(1, "in png_do_bgr");
+   png_debug(1, "in png_do_bgr\n");
-
+   if (
-   if ((row_info->color_type & PNG_COLOR_MASK_COLOR))
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
+       row != NULL && row_info != NULL &&
+#endif
+       (row_info->color_type & PNG_COLOR_MASK_COLOR))
    {
       png_uint_32 row_width = row_info->width;
       if (row_info->bit_depth == 8)
@@ -560,7 +573,6 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
                *(rp + 2) = save;
             }
          }
-
          else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
          {
             png_bytep rp;
@@ -574,8 +586,6 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
             }
          }
       }
-
-#ifdef PNG_16BIT_SUPPORTED
       else if (row_info->bit_depth == 16)
       {
          if (row_info->color_type == PNG_COLOR_TYPE_RGB)
@@ -593,7 +603,6 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
                *(rp + 5) = save;
             }
          }
-
          else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
          {
             png_bytep rp;
@@ -610,25 +619,28 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
             }
          }
       }
-#endif
    }
 }
 #endif /* PNG_READ_BGR_SUPPORTED or PNG_WRITE_BGR_SUPPORTED */
 
 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
-    defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+    defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+    defined(PNG_LEGACY_SUPPORTED)
 void PNGAPI
 png_set_user_transform_info(png_structp png_ptr, png_voidp
    user_transform_ptr, int user_transform_depth, int user_transform_channels)
 {
-   png_debug(1, "in png_set_user_transform_info");
+   png_debug(1, "in png_set_user_transform_info\n");
-
+   if(png_ptr == NULL) return;
-   if (png_ptr == NULL)
+#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
-      return;
    png_ptr->user_transform_ptr = user_transform_ptr;
    png_ptr->user_transform_depth = (png_byte)user_transform_depth;
    png_ptr->user_transform_channels = (png_byte)user_transform_channels;
+#else
+   if(user_transform_ptr || user_transform_depth || user_transform_channels)
+      png_warning(png_ptr,
+        "This version of libpng does not support user transform info");
+#endif
 }
 #endif
 
@@ -637,38 +649,14 @@ png_set_user_transform_info(png_structp png_ptr, png_voidp
  * associated with this pointer before png_write_destroy and png_read_destroy
  * are called.
  */
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
 png_voidp PNGAPI
-png_get_user_transform_ptr(png_const_structp png_ptr)
+png_get_user_transform_ptr(png_structp png_ptr)
 {
-   if (png_ptr == NULL)
+#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
-      return (NULL);
+   if (png_ptr == NULL) return (NULL);
-
    return ((png_voidp)png_ptr->user_transform_ptr);
-}
+#else
+   return (NULL);
 #endif
-
-#ifdef PNG_USER_TRANSFORM_INFO_SUPPORTED
-png_uint_32 PNGAPI
-png_get_current_row_number(png_const_structp png_ptr)
-{
-   /* See the comments in png.h - this is the sub-image row when reading and
-    * interlaced image.
-    */
-   if (png_ptr != NULL)
-      return png_ptr->row_number;
-
-   return PNG_UINT_32_MAX; /* help the app not to fail silently */
 }
-
-png_byte PNGAPI
-png_get_current_pass_number(png_const_structp png_ptr)
-{
-   if (png_ptr != NULL)
-      return png_ptr->pass;
-   return 8; /* invalid */
-}
-#endif /* PNG_USER_TRANSFORM_INFO_SUPPORTED */
-#endif /* PNG_READ_USER_TRANSFORM_SUPPORTED ||
-          PNG_WRITE_USER_TRANSFORM_SUPPORTED */
 #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */

pngvcrd.c

@@ -0,0 +1 @@
+/* pnggvrd.c was removed from libpng-1.2.20. */

pngwio.c

@@ -1,15 +1,12 @@
 
 /* pngwio.c - functions for data output
  *
- * Last changed in libpng 1.5.0 [January 6, 2011]
+ * Last changed in libpng 1.2.13 November 13, 2006
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2006 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
  * This file provides a location for all output.  Users who need
  * special handling are expected to write functions that have the same
  * arguments as these and perform similar functions, but that possibly
@@ -18,101 +15,100 @@
  * them at run time with png_set_write_fn(...).
  */
 
-#include "pngpriv.h"
+#define PNG_INTERNAL
-
+#include "png.h"
 #ifdef PNG_WRITE_SUPPORTED
 
 /* Write the data to whatever output you are using.  The default routine
- * writes to a file pointer.  Note that this routine sometimes gets called
+   writes to a file pointer.  Note that this routine sometimes gets called
- * with very small lengths, so you should implement some kind of simple
+   with very small lengths, so you should implement some kind of simple
- * buffering if you are using unbuffered writes.  This should never be asked
+   buffering if you are using unbuffered writes.  This should never be asked
- * to write more than 64K on a 16 bit machine.
+   to write more than 64K on a 16 bit machine.  */
- */
 
 void /* PRIVATE */
-png_write_data(png_structp png_ptr, png_const_bytep data, png_size_t length)
+png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
-   /* NOTE: write_data_fn must not change the buffer! */
    if (png_ptr->write_data_fn != NULL )
-      (*(png_ptr->write_data_fn))(png_ptr, (png_bytep)data, length);
+      (*(png_ptr->write_data_fn))(png_ptr, data, length);
-
    else
       png_error(png_ptr, "Call to NULL write function");
 }
 
-#ifdef PNG_STDIO_SUPPORTED
+#if !defined(PNG_NO_STDIO)
 /* This is the function that does the actual writing of data.  If you are
- * not writing to a standard C stream, you should create a replacement
+   not writing to a standard C stream, you should create a replacement
- * write_data function and use it at run time with png_set_write_fn(), rather
+   write_data function and use it at run time with png_set_write_fn(), rather
- * than changing the library.
+   than changing the library. */
- */
 #ifndef USE_FAR_KEYWORD
-void PNGCBAPI
+void PNGAPI
 png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
-   png_size_t check;
+   png_uint_32 check;
-
-   if (png_ptr == NULL)
-      return;
 
+   if(png_ptr == NULL) return;
+#if defined(_WIN32_WCE)
+   if ( !WriteFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
+      check = 0;
+#else
    check = fwrite(data, 1, length, (png_FILE_p)(png_ptr->io_ptr));
-
+#endif
    if (check != length)
       png_error(png_ptr, "Write Error");
 }
 #else
-/* This is the model-independent version. Since the standard I/O library
+/* this is the model-independent version. Since the standard I/O library
- * can't handle far buffers in the medium and small models, we have to copy
+   can't handle far buffers in the medium and small models, we have to copy
- * the data.
+   the data.
- */
+*/
 
 #define NEAR_BUF_SIZE 1024
 #define MIN(a,b) (a <= b ? a : b)
 
-void PNGCBAPI
+void PNGAPI
 png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
    png_uint_32 check;
    png_byte *near_data;  /* Needs to be "png_byte *" instead of "png_bytep" */
    png_FILE_p io_ptr;
 
-   if (png_ptr == NULL)
+   if(png_ptr == NULL) return;
-      return;
-
    /* Check if data really is near. If so, use usual code. */
    near_data = (png_byte *)CVT_PTR_NOCHECK(data);
    io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
-
    if ((png_bytep)near_data == data)
    {
+#if defined(_WIN32_WCE)
+      if ( !WriteFile(io_ptr, near_data, length, &check, NULL) )
+         check = 0;
+#else
       check = fwrite(near_data, 1, length, io_ptr);
+#endif
    }
-
    else
    {
       png_byte buf[NEAR_BUF_SIZE];
       png_size_t written, remaining, err;
       check = 0;
       remaining = length;
-
       do
       {
          written = MIN(NEAR_BUF_SIZE, remaining);
-         png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
+         png_memcpy(buf, data, written); /* copy far buffer to near buffer */
+#if defined(_WIN32_WCE)
+         if ( !WriteFile(io_ptr, buf, written, &err, NULL) )
+            err = 0;
+#else
          err = fwrite(buf, 1, written, io_ptr);
-
+#endif
          if (err != written)
             break;
-
          else
             check += err;
-
          data += written;
          remaining -= written;
       }
       while (remaining != 0);
    }
-
    if (check != length)
       png_error(png_ptr, "Write Error");
 }
@@ -121,10 +117,9 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
 #endif
 
 /* This function is called to output any data pending writing (normally
- * to disk).  After png_flush is called, there should be no data pending
+   to disk).  After png_flush is called, there should be no data pending
- * writing in any buffers.
+   writing in any buffers. */
- */
+#if defined(PNG_WRITE_FLUSH_SUPPORTED)
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
 void /* PRIVATE */
 png_flush(png_structp png_ptr)
 {
@@ -132,123 +127,108 @@ png_flush(png_structp png_ptr)
       (*(png_ptr->output_flush_fn))(png_ptr);
 }
 
-#  ifdef PNG_STDIO_SUPPORTED
+#if !defined(PNG_NO_STDIO)
-void PNGCBAPI
+void PNGAPI
 png_default_flush(png_structp png_ptr)
 {
+#if !defined(_WIN32_WCE)
    png_FILE_p io_ptr;
-
+#endif
-   if (png_ptr == NULL)
+   if(png_ptr == NULL) return;
-      return;
+#if !defined(_WIN32_WCE)
-
    io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr));
-   fflush(io_ptr);
+   if (io_ptr != NULL)
+      fflush(io_ptr);
+#endif
 }
-#  endif
+#endif
 #endif
 
 /* This function allows the application to supply new output functions for
- * libpng if standard C streams aren't being used.
+   libpng if standard C streams aren't being used.
- *
+
- * This function takes as its arguments:
+   This function takes as its arguments:
- * png_ptr       - pointer to a png output data structure
+   png_ptr       - pointer to a png output data structure
- * io_ptr        - pointer to user supplied structure containing info about
+   io_ptr        - pointer to user supplied structure containing info about
- *                 the output functions.  May be NULL.
+                   the output functions.  May be NULL.
- * write_data_fn - pointer to a new output function that takes as its
+   write_data_fn - pointer to a new output function that takes as its
- *                 arguments a pointer to a png_struct, a pointer to
+                   arguments a pointer to a png_struct, a pointer to
- *                 data to be written, and a 32-bit unsigned int that is
+                   data to be written, and a 32-bit unsigned int that is
- *                 the number of bytes to be written.  The new write
+                   the number of bytes to be written.  The new write
- *                 function should call png_error(png_ptr, "Error msg")
+                   function should call png_error(png_ptr, "Error msg")
- *                 to exit and output any fatal error messages.  May be
+                   to exit and output any fatal error messages.
- *                 NULL, in which case libpng's default function will
+   flush_data_fn - pointer to a new flush function that takes as its
- *                 be used.
+                   arguments a pointer to a png_struct.  After a call to
- * flush_data_fn - pointer to a new flush function that takes as its
+                   the flush function, there should be no data in any buffers
- *                 arguments a pointer to a png_struct.  After a call to
+                   or pending transmission.  If the output method doesn't do
- *                 the flush function, there should be no data in any buffers
+                   any buffering of ouput, a function prototype must still be
- *                 or pending transmission.  If the output method doesn't do
+                   supplied although it doesn't have to do anything.  If
- *                 any buffering of output, a function prototype must still be
+                   PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile
- *                 supplied although it doesn't have to do anything.  If
+                   time, output_flush_fn will be ignored, although it must be
- *                 PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile
+                   supplied for compatibility. */
- *                 time, output_flush_fn will be ignored, although it must be
- *                 supplied for compatibility.  May be NULL, in which case
- *                 libpng's default function will be used, if
- *                 PNG_WRITE_FLUSH_SUPPORTED is defined.  This is not
- *                 a good idea if io_ptr does not point to a standard
- *                 *FILE structure.
- */
 void PNGAPI
 png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
-    png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)
+   png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)
 {
-   if (png_ptr == NULL)
+   if(png_ptr == NULL) return;
-      return;
-
    png_ptr->io_ptr = io_ptr;
 
-#ifdef PNG_STDIO_SUPPORTED
+#if !defined(PNG_NO_STDIO)
    if (write_data_fn != NULL)
       png_ptr->write_data_fn = write_data_fn;
-
    else
       png_ptr->write_data_fn = png_default_write_data;
 #else
    png_ptr->write_data_fn = write_data_fn;
 #endif
 
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
+#if defined(PNG_WRITE_FLUSH_SUPPORTED)
-#  ifdef PNG_STDIO_SUPPORTED
+#if !defined(PNG_NO_STDIO)
-
    if (output_flush_fn != NULL)
       png_ptr->output_flush_fn = output_flush_fn;
-
    else
       png_ptr->output_flush_fn = png_default_flush;
-
+#else
-#  else
    png_ptr->output_flush_fn = output_flush_fn;
-#  endif
+#endif
 #endif /* PNG_WRITE_FLUSH_SUPPORTED */
 
    /* It is an error to read while writing a png file */
    if (png_ptr->read_data_fn != NULL)
    {
       png_ptr->read_data_fn = NULL;
-
       png_warning(png_ptr,
-          "Can't set both read_data_fn and write_data_fn in the"
+         "Attempted to set both read_data_fn and write_data_fn in");
-          " same structure");
+      png_warning(png_ptr,
+         "the same structure.  Resetting read_data_fn to NULL.");
    }
 }
 
-#ifdef USE_FAR_KEYWORD
+#if defined(USE_FAR_KEYWORD)
-#  ifdef _MSC_VER
+#if defined(_MSC_VER)
-void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check)
+void *png_far_to_near(png_structp png_ptr,png_voidp ptr, int check)
 {
    void *near_ptr;
    void FAR *far_ptr;
    FP_OFF(near_ptr) = FP_OFF(ptr);
    far_ptr = (void FAR *)near_ptr;
-
+   if(check != 0)
-   if (check != 0)
+      if(FP_SEG(ptr) != FP_SEG(far_ptr))
-      if (FP_SEG(ptr) != FP_SEG(far_ptr))
+         png_error(png_ptr,"segment lost in conversion");
-         png_error(png_ptr, "segment lost in conversion");
-
    return(near_ptr);
 }
 #  else
-void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check)
+void *png_far_to_near(png_structp png_ptr,png_voidp ptr, int check)
 {
    void *near_ptr;
    void FAR *far_ptr;
    near_ptr = (void FAR *)ptr;
    far_ptr = (void FAR *)near_ptr;
-
+   if(check != 0)
-   if (check != 0)
+      if(far_ptr != ptr)
-      if (far_ptr != ptr)
+         png_error(png_ptr,"segment lost in conversion");
-         png_error(png_ptr, "segment lost in conversion");
-
    return(near_ptr);
 }
-#  endif
+#   endif
-#endif
+#   endif
 #endif /* PNG_WRITE_SUPPORTED */