[libpng15] Imported from libpng-1.5.18beta01.tar

filter is found.

ANNOUNCE

@@ -1,5 +1,5 @@
 
-Libpng 1.5.17rc01 - June 17, 2013
+Libpng 1.5.18beta01 - August 21, 2013
 
 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.
@@ -9,48 +9,26 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.5.17rc01.tar.xz (LZMA-compressed, recommended)
-   1.5.17rc01.tar.gz
-   1.5.17rc01.tar.bz2
+   1.5.18beta01.tar.xz (LZMA-compressed, recommended)
+   1.5.18beta01.tar.gz
+   1.5.18beta01.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp1517r01.7z  (LZMA-compressed, recommended)
-   lp1517r01.zip
+   lp1518b01.7z  (LZMA-compressed, recommended)
+   lp1518b01.zip
 
 Other information:
 
-   1.5.17rc01-README.txt
-   1.5.17rc01-LICENSE.txt
+   1.5.18beta01-README.txt
+   1.5.18beta01-LICENSE.txt
 
-Changes since the last public release (1.5.16):
+Changes since the last public release (1.5.17):
 
-Version 1.5.17beta01 [June 8, 2013]
-  Removed a redundant test from png_set_IHDR().
-  Added set(CMAKE_CONFIGURATION_TYPES ...) to CMakeLists.txt (Andrew Hundt)
-  Deleted set(CMAKE_BUILD_TYPE) block from CMakeLists.txt
-  Make ARM NEON support work at compile time (not just configure time).
-    This moves the test on __ARM_NEON__ into pngconf.h to avoid issues when
-    using a compiler that compiles for multiple architectures at one time.
-  Removed PNG_FILTER_OPTIMIZATIONS and PNG_ARM_NEON_SUPPORTED from
-    pnglibconf.h, allowing more of the decisions to be made internally
-    (pngpriv.h) during the compile.  Without this, symbol prefixing is broken
-    under certain circumstances on ARM platforms.  Now only the API parts of
-    the optimizations ('check' vs 'api') are exposed in the public header files
-    except that the new setting PNG_ARM_NEON_OPT documents how libpng makes the
-    decision about whether or not to use the optimizations.
-  Protect symbol prefixing against CC/CPPFLAGS/CFLAGS useage.
-    Previous iOS/Xcode fixes for the ARM NEON optimizations moved the test
-    on __ARM_NEON__ from configure time to compile time.  This breaks symbol
-    prefixing because the definition of the special png_init_filter_functions
-    call was hidden at configure time if the relevant compiler arguments are
-    passed in CFLAGS as opposed to CC.  This change attempts to avoid all
-    the confusion that would result by declaring the init function even when
-    it is not used, so that it will always get prefixed.
-
-Version 1.5.17rc01 [June 17, 2013]
-  No changes.
+Version 1.5.18beta01 [August 21, 2013]
+  Delay calling png_init_filter_functions() until a row with nonzero filter
+    is found.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit

CHANGES

@@ -4139,6 +4139,21 @@ Version 1.5.17beta01 [June 8, 2013]
 Version 1.5.17rc01 [June 17, 2013]
   No changes.
 
+Version 1.5.17rc02 [June 18, 2013]
+  Revised libpng.3 so that "doclifter" can process it.
+
+Version 1.5.17rc03 [June 25, 2013]
+  Revised example.c to illustrate use of PNG_DEFAULT_sRGB and PNG_GAMMA_MAC_18
+    as parameters for png_set_gamma().  These have been available since
+    libpng-1.5.4.
+
+Version 1.5.17 [June 27, 2013]
+  No changes.
+
+Version 1.5.18beta01 [August 21, 2013]
+  Delay calling png_init_filter_functions() until a row with nonzero filter
+    is found.
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement

CMakeLists.txt

@@ -16,7 +16,7 @@ enable_testing()
 
 set(PNGLIB_MAJOR 1)
 set(PNGLIB_MINOR 5)
-set(PNGLIB_RELEASE 17)
+set(PNGLIB_RELEASE 18)
 set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
 set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
 
@@ -217,7 +217,7 @@ endif(NOT WIN32 OR CYGWIN OR MINGW)
 # SET UP LINKS
 if(PNG_SHARED)
   set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#   VERSION 15.${PNGLIB_RELEASE}.1.5.17rc01
+#   VERSION 15.${PNGLIB_RELEASE}.1.5.18beta01
     VERSION 15.${PNGLIB_RELEASE}.0
     SOVERSION 15
     CLEAN_DIRECT_OUTPUT 1)

LICENSE

@@ -10,8 +10,8 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.17rc01, June 17, 2013, are
-Copyright (c) 2004, 2006-2012 Glenn Randers-Pehrson, and are
+libpng versions 1.2.6, August 15, 2004, through 1.5.18beta01, August 21, 2013, are
+Copyright (c) 2004, 2006-2013 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 +108,4 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-June 17, 2013
+August 21, 2013

README

@@ -1,4 +1,4 @@
-README for libpng version 1.5.17rc01 - June 17, 2013 (shared library 15.0)
+README for libpng version 1.5.18beta01 - August 21, 2013 (shared library 15.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.

arm/arm_init.c

@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2013 Glenn Randers-Pehrson
  * Written by Mans Rullgard, 2011.
- * Last changed in libpng 1.5.17 [$RDATE%]
+ * Last changed in libpng 1.5.17 [June 27, 2013]
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer

arm/filter_neon.S

@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2013 Glenn Randers-Pehrson
  * Written by Mans Rullgard, 2011.
- * Last changed in libpng 1.5.17 [$RDATE%]
+ * Last changed in libpng 1.5.17 [June 27, 2013]
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for libpng 1.5.17rc01.
+# Generated by GNU Autoconf 2.69 for libpng 1.5.18beta01.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -590,8 +590,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.5.17rc01'
-PACKAGE_STRING='libpng 1.5.17rc01'
+PACKAGE_VERSION='1.5.18beta01'
+PACKAGE_STRING='libpng 1.5.18beta01'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 PACKAGE_URL=''
 
@@ -1342,7 +1342,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures libpng 1.5.17rc01 to adapt to many kinds of systems.
+\`configure' configures libpng 1.5.18beta01 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1412,7 +1412,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.5.17rc01:";;
+     short | recursive ) echo "Configuration of libpng 1.5.18beta01:";;
    esac
   cat <<\_ACEOF
 
@@ -1534,7 +1534,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.5.17rc01
+libpng configure 1.5.18beta01
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1957,7 +1957,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by libpng $as_me 1.5.17rc01, which was
+It was created by libpng $as_me 1.5.18beta01, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -2820,7 +2820,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.5.17rc01'
+ VERSION='1.5.18beta01'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -2890,10 +2890,10 @@ fi
 
 
 
-PNGLIB_VERSION=1.5.17rc01
+PNGLIB_VERSION=1.5.18beta01
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=5
-PNGLIB_RELEASE=17
+PNGLIB_RELEASE=18
 
 
 
@@ -13426,7 +13426,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libpng $as_me 1.5.17rc01, which was
+This file was extended by libpng $as_me 1.5.18beta01, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -13492,7 +13492,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-libpng config.status 1.5.17rc01
+libpng config.status 1.5.18beta01
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 

configure.ac

@@ -18,15 +18,15 @@ AC_PREREQ(2.59)
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.5.17rc01], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.5.18beta01], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE([serial-tests])
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.5.17rc01
+PNGLIB_VERSION=1.5.18beta01
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=5
-PNGLIB_RELEASE=17
+PNGLIB_RELEASE=18
 
 dnl End of version number stuff
 

example.c

@@ -2,8 +2,8 @@
 #if 0 /* in case someone actually tries to compile this */
 
 /* example.c - an example of using libpng
- * Last changed in libpng 1.5.10 [March 8, 2012]
- * Maintained 1998-2012 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.17 [June 27, 2013]
+ * Maintained 1998-2013 Glenn Randers-Pehrson
  * Maintained 1996, 1997 Andreas Dilger
  * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  */
@@ -259,9 +259,9 @@ 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
-                              lit room */
-      screen_gamma = 1.7 or 1.0;  /* A good guess for Mac systems */
+      screen_gamma = PNG_DEFAULT_sRGB;  /* A good guess for a PC monitor
+                                           in a dimly lit room */
+      screen_gamma = PNG_GAMMA_MAC_18 or 1.0; /* Good guesses for Mac systems */
    }
 
    /* Tell libpng to handle the gamma conversion for you.  The final call
@@ -273,7 +273,7 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
    int intent;
 
    if (png_get_sRGB(png_ptr, info_ptr, &intent))
-      png_set_gamma(png_ptr, screen_gamma, 0.45455);
+      png_set_gamma(png_ptr, screen_gamma, PNG_DEFAULT_sRGB);
    else
    {
       double image_gamma;

libpng-manual.txt

@@ -1,6 +1,6 @@
 Libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.17rc01 - June 17, 2013
+ libpng version 1.5.18beta01 - August 21, 2013
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2013 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@ Libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.17rc01 - June 17, 2013
+ libpng versions 0.97, January 1998, through 1.5.18beta01 - August 21, 2013
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2013 Glenn Randers-Pehrson
 
@@ -707,7 +707,7 @@ situations:
                      system expects data with no gamma encoding.
 
 You would use the linear (unencoded) value if you need to process the pixel
-values further because this avoids the need to decode and reencode each
+values further because this avoids the need to decode and re-encode each
 component value whenever arithmetic is performed.  A lot of graphics software
 uses linear values for this reason, often with higher precision component values
 to preserve overall accuracy.
@@ -2248,7 +2248,7 @@ For a more compact example of reading a PNG image, see the file example.c.
 
 Reading PNG files progressively
 
-The progressive reader is slightly different then the non-progressive
+The progressive reader is slightly different from the non-progressive
 reader.  Instead of calling png_read_info(), png_read_rows(), and
 png_read_end(), you make one call to png_process_data(), which calls
 callbacks when it has the info, a row, or the end of the image.  You
@@ -3875,7 +3875,7 @@ the message, "message" is the formatted string to be printed,
 and p1 and p2 are parameters that are to be embedded in the string
 according to printf-style formatting directives.  For example,
 
-   png_debug1(2, "foo=%d\n", foo);
+   png_debug1(2, "foo=%d", foo);
 
 is expanded to
 
@@ -4171,7 +4171,7 @@ it has not been well tested and doesn't actually "dither".
 The code was not
 removed, however, and could be enabled by building libpng with
 PNG_READ_DITHER_SUPPORTED defined.  In libpng-1.4.2, this support
-was reenabled, but the function was renamed png_set_quantize() to
+was re-enabled, but the function was renamed png_set_quantize() to
 reflect more accurately what it actually does.  At the same time,
 the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros were also renamed to
 PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS, and PNG_READ_DITHER_SUPPORTED
@@ -4305,7 +4305,7 @@ did not exist.)
 Applications can now choose whether to use these macros or to call the
 corresponding function by defining PNG_USE_READ_MACROS or
 PNG_NO_USE_READ_MACROS before including png.h.  Notice that this is
-only supported from 1.5.0 -defining PNG_NO_USE_READ_MACROS prior to 1.5.0
+only supported from 1.5.0; defining PNG_NO_USE_READ_MACROS prior to 1.5.0
 will lead to a link failure.
 
 Prior to libpng-1.5.4, the zlib compressor used the same set of parameters
@@ -4341,6 +4341,9 @@ limits are now
    png_user_chunk_cache_max  0 (unlimited)   128
    png_user_chunk_malloc_max 0 (unlimited) 8,000,000
 
+The png_set_option() function (and the "options" member of the png struct) was
+added to libpng-1.5.15.
+
 B. Changes to the build and configuration of libpng
 
 Details of internal changes to the library code can be found in the CHANGES
@@ -4655,13 +4658,13 @@ Other rules can be inferred by inspecting the libpng source.
 
 XIV. Y2K Compliance in libpng
 
-June 17, 2013
+August 21, 2013
 
 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 1.5.17rc01 are Y2K compliant.  It is my belief that earlier
+upward through 1.5.18beta01 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has two year fields.  One is a 2-byte unsigned integer that

libpng.3

@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "June 17, 2013"
+.TH LIBPNG 3 "August 21, 2013"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.5.17rc01
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.18beta01
 .SH SYNOPSIS
 \fB
 #include <png.h>\fP
@@ -492,7 +492,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 Libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.17rc01 - June 17, 2013
+ libpng version 1.5.18beta01 - August 21, 2013
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
  Copyright (c) 1998-2013 Glenn Randers-Pehrson
@@ -503,7 +503,7 @@ Libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.17rc01 - June 17, 2013
+ libpng versions 0.97, January 1998, through 1.5.18beta01 - August 21, 2013
  Updated and distributed by Glenn Randers-Pehrson
  Copyright (c) 1998-2013 Glenn Randers-Pehrson
 
@@ -641,7 +641,7 @@ All APIs that take (double) arguments also have a matching API that
 takes the corresponding fixed point integer arguments.  The fixed point
 API has the same name as the floating point one with "_fixed" appended.
 The actual range of values permitted in the APIs is frequently less than
-the full range of (png_fixed_point) (-21474 to +21474).  When APIs require
+the full range of (png_fixed_point) (\-21474 to +21474).  When APIs require
 a non-negative argument the type is recorded as png_uint_32 above.  Consult
 the header file and the text below for more information.
 
@@ -682,7 +682,7 @@ The easiest way to make minor changes to the libpng configuration when
 auto-configuration is supported is to add definitions to the command line
 using (typically) CPPFLAGS.  For example:
 
-CPPFLAGS=-DPNG_NO_FLOATING_ARITHMETIC
+CPPFLAGS=\-DPNG_NO_FLOATING_ARITHMETIC
 
 will change the internal libpng math implementation for gamma correction and
 other arithmetic calculations to fixed point, avoiding the need for fast
@@ -690,7 +690,7 @@ floating point support.  The result can be seen in the generated pnglibconf.h -
 make sure it contains the changed feature macro setting.
 
 If you need to make more extensive configuration changes - more than one or two
-feature macro settings - you can either add -DPNG_USER_CONFIG to the build
+feature macro settings - you can either add \-DPNG_USER_CONFIG to the build
 command line and put a list of feature macro settings in pngusr.h or you can set
 DFA_XTRA (a makefile variable) to a file containing the same information in the
 form of 'option' settings.
@@ -749,7 +749,7 @@ pngusr.dfa in these directories.
 
 C. Configuration using PNG_USR_CONFIG
 
-If -DPNG_USR_CONFIG is added to the CFLAGS when pnglibconf.h is built the file
+If \-DPNG_USR_CONFIG is added to the CFLAGS when pnglibconf.h is built the file
 pngusr.h will automatically be included before the options in
 scripts/pnglibconf.dfa are processed.  Your pngusr.h file should contain only
 macro definitions turning features on or off or setting settings.
@@ -979,7 +979,7 @@ input stream. You must supply the function
           unknown chunk structure, process it, and return one
           of the following: */
 
-       return (-n); /* chunk had an error */
+       return (\-n); /* chunk had an error */
        return (0); /* did not recognize */
        return (n); /* success */
     }
@@ -1024,7 +1024,7 @@ non-interlaced case the row that was just handled is simply one less than the
 passed in row number, and pass will always be 0.  For the interlaced case the
 same applies unless the row value is 0, in which case the row just handled was
 the last one from one of the preceding passes.  Because interlacing may skip a
-pass you cannot be sure that the preceding pass is just 'pass-1', if you really
+pass you cannot be sure that the preceding pass is just 'pass\-1', if you really
 need to know what the last pass is record (row,pass) from the callback and use
 the last recorded value each time.
 
@@ -1110,7 +1110,7 @@ callback function:
 .SS User limits
 
 The PNG specification allows the width and height of an image to be as
-large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns.
+large as 2^(31\-1 (0x7fffffff), or about 2.147 billion rows and columns.
 Since very few applications really need to process such large images,
 we have imposed an arbitrary 1-million limit on rows and columns.
 Larger images will be rejected immediately with a png_error() call. If
@@ -1199,7 +1199,7 @@ situations:
                      system expects data with no gamma encoding.
 
 You would use the linear (unencoded) value if you need to process the pixel
-values further because this avoids the need to decode and reencode each
+values further because this avoids the need to decode and re-encode each
 component value whenever arithmetic is performed.  A lot of graphics software
 uses linear values for this reason, often with higher precision component values
 to preserve overall accuracy.
@@ -2670,13 +2670,13 @@ point to libpng-allocated storage with the following function:
            or simply PNG_FREE_ALL
 
     seq  - sequence number of item to be freed
-           (-1 for all items)
+           (\-1 for all items)
 
 This function may be safely called when the relevant storage has
 already been freed, or has not yet been allocated, or was allocated
 by the user and not by libpng,  and will in those cases do nothing.
 The "seq" parameter is ignored if only one item of the selected data
-type, such as PLTE, is allowed.  If "seq" is not -1, and multiple items
+type, such as PLTE, is allowed.  If "seq" is not \-1, and multiple items
 are allowed for the data type identified in the mask, such as text or
 sPLT, only the n'th item in the structure is freed, where n is "seq".
 
@@ -2740,7 +2740,7 @@ For a more compact example of reading a PNG image, see the file example.c.
 
 .SS Reading PNG files progressively
 
-The progressive reader is slightly different then the non-progressive
+The progressive reader is slightly different from the non-progressive
 reader.  Instead of calling png_read_info(), png_read_rows(), and
 png_read_end(), you make one call to png_process_data(), which calls
 callbacks when it has the info, a row, or the end of the image.  You
@@ -3063,7 +3063,7 @@ non-interlaced case the row that was just handled is simply one less than the
 passed in row number, and pass will always be 0.  For the interlaced case the
 same applies unless the row value is 0, in which case the row just handled was
 the last one from one of the preceding passes.  Because interlacing may skip a
-pass you cannot be sure that the preceding pass is just 'pass-1', if you really
+pass you cannot be sure that the preceding pass is just 'pass\-1', if you really
 need to know what the last pass is record (row,pass) from the callback and use
 the last recorded value each time.
 
@@ -3900,13 +3900,13 @@ point to libpng-allocated storage with the following function:
             or simply PNG_FREE_ALL
 
     seq   - sequence number of item to be freed
-            (-1 for all items)
+            (\-1 for all items)
 
 This function may be safely called when the relevant storage has
 already been freed, or has not yet been allocated, or was allocated
 by the user  and not by libpng,  and will in those cases do nothing.
 The "seq" parameter is ignored if only one item of the selected data
-type, such as PLTE, is allowed.  If "seq" is not -1, and multiple items
+type, such as PLTE, is allowed.  If "seq" is not \-1, and multiple items
 are allowed for the data type identified in the mask, such as text or
 sPLT, only the n'th item in the structure is freed, where n is "seq".
 
@@ -4368,12 +4368,12 @@ the message, "message" is the formatted string to be printed,
 and p1 and p2 are parameters that are to be embedded in the string
 according to printf-style formatting directives.  For example,
 
-   png_debug1(2, "foo=%d\n", foo);
+   png_debug1(2, "foo=%d", foo);
 
 is expanded to
 
    if (PNG_DEBUG > 2)
-      fprintf(PNG_DEBUG_FILE, "foo=%d\n", foo);
+      fprintf(PNG_DEBUG_FILE, "foo=%d\en", foo);
 
 When PNG_DEBUG is defined but is zero, the macros aren't defined, but you
 can still use PNG_DEBUG to control your own debugging:
@@ -4664,7 +4664,7 @@ it has not been well tested and doesn't actually "dither".
 The code was not
 removed, however, and could be enabled by building libpng with
 PNG_READ_DITHER_SUPPORTED defined.  In libpng-1.4.2, this support
-was reenabled, but the function was renamed png_set_quantize() to
+was re-enabled, but the function was renamed png_set_quantize() to
 reflect more accurately what it actually does.  At the same time,
 the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros were also renamed to
 PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS, and PNG_READ_DITHER_SUPPORTED
@@ -4693,7 +4693,7 @@ reading, and after png_write_png() or png_write_image() while writing.
 
    int max_palette = png_get_palette_max(png_ptr, info_ptr);
 
-This will return the maximum palette index found in the image, or "-1" if
+This will return the maximum palette index found in the image, or "\-1" if
 the palette was not checked, or "0" if no palette was found.  Note that this
 does not account for any palette index used by ancillary chunks such as the
 bKGD chunk; you must check those separately to determine the maximum
@@ -4798,7 +4798,7 @@ did not exist.)
 Applications can now choose whether to use these macros or to call the
 corresponding function by defining PNG_USE_READ_MACROS or
 PNG_NO_USE_READ_MACROS before including png.h.  Notice that this is
-only supported from 1.5.0 -defining PNG_NO_USE_READ_MACROS prior to 1.5.0
+only supported from 1.5.0; defining PNG_NO_USE_READ_MACROS prior to 1.5.0
 will lead to a link failure.
 
 Prior to libpng-1.5.4, the zlib compressor used the same set of parameters
@@ -4834,6 +4834,9 @@ limits are now
    png_user_chunk_cache_max  0 (unlimited)   128
    png_user_chunk_malloc_max 0 (unlimited) 8,000,000
 
+The png_set_option() function (and the "options" member of the png struct) was
+added to libpng-1.5.15.
+
 B. Changes to the build and configuration of libpng
 
 Details of internal changes to the library code can be found in the CHANGES
@@ -5130,7 +5133,7 @@ C binary operator and after "for" or "while", and before
 being cast, nor do we put one between a function name and the
 left parenthesis that follows it:
 
-    for (i = 2; i > 0; --i)
+    for (i = 2; i > 0; \-\-i)
        y[i] = a(x) + (int)b;
 
 We prefer #ifdef and #ifndef to #if defined() and #if !defined()
@@ -5148,13 +5151,13 @@ Other rules can be inferred by inspecting the libpng source.
 
 .SH XIV. Y2K Compliance in libpng
 
-June 17, 2013
+August 21, 2013
 
 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 1.5.17rc01 are Y2K compliant.  It is my belief that earlier
+upward through 1.5.18beta01 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.
 
 Libpng only has two year fields.  One is a 2-byte unsigned integer that
@@ -5384,7 +5387,9 @@ the first widely used release:
  1.5.16rc01          15    10516  15.so.15.16[.0]
  1.5.16              15    10516  15.so.15.16[.0]
  1.5.17beta01        15    10517  15.so.15.17[.0]
- 1.5.17rc01          15    10517  15.so.15.17[.0]
+ 1.5.17rc01-03       15    10517  15.so.15.17[.0]
+ 1.5.17              15    10517  15.so.15.17[.0]
+ 1.5.18beta01        15    10518  15.so.15.18[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -5441,7 +5446,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.5.17rc01 - June 17, 2013:
+Libpng version 1.5.18beta01 - August 21, 2013:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -5464,7 +5469,7 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.17rc01, June 17, 2013, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.18beta01, August 21, 2013, are
 Copyright (c) 2004,2006-2007 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
@@ -5563,7 +5568,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-June 17, 2013
+August 21, 2013
 
 .\" end of man page
 

libpngpf.3

@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "June 17, 2013"
+.TH LIBPNGPF 3 "August 21, 2013"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.5.17rc01
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.18beta01
 (private functions)
 .SH SYNOPSIS
 \fB#include \fI"pngpriv.h"

png.5

@@ -1,4 +1,4 @@
-.TH PNG 5 "June 17, 2013"
+.TH PNG 5 "August 21, 2013"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION

png.c

@@ -14,7 +14,7 @@
 #include "pngpriv.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_5_17rc01 Your_png_h_is_not_version_1_5_17rc01;
+typedef png_libpng_version_1_5_18beta01 Your_png_h_is_not_version_1_5_18beta01;
 
 /* Tells libpng that we have already handled the first "num_bytes" bytes
  * of the PNG file signature.  If the PNG data is embedded into another
@@ -658,13 +658,13 @@ png_get_copyright(png_const_structp png_ptr)
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.5.17rc01 - June 17, 2013" PNG_STRING_NEWLINE \
+     "libpng version 1.5.18beta01 - August 21, 2013" PNG_STRING_NEWLINE \
      "Copyright (c) 1998-2013 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
      "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
      "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
      PNG_STRING_NEWLINE;
 #  else
-      return "libpng version 1.5.17rc01 - June 17, 2013\
+      return "libpng version 1.5.18beta01 - August 21, 2013\
       Copyright (c) 1998-2013 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";

png.h

@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.5.17rc01 - June 17, 2013
+ * libpng version 1.5.18beta01 - August 21, 2013
  * Copyright (c) 1998-2013 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.)
@@ -11,7 +11,7 @@
  * Authors and maintainers:
  *   libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
  *   libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *   libpng versions 0.97, January 1998, through 1.5.17rc01 - June 17, 2013: Glenn
+ *   libpng versions 0.97, January 1998, through 1.5.18beta01 - August 21, 2013: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -191,7 +191,9 @@
  *    1.5.16rc01              15    10516  15.so.15.16[.0]
  *    1.5.16                  15    10516  15.so.15.16[.0]
  *    1.5.17beta01            15    10517  15.so.15.17[.0]
- *    1.5.17rc01              15    10517  15.so.15.17[.0]
+ *    1.5.17rc01-03           15    10517  15.so.15.17[.0]
+ *    1.5.17                  15    10517  15.so.15.17[.0]
+ *    1.5.18beta01            15    10518  15.so.15.18[.0]
  *
  *   Henceforth the source version will match the shared-library major
  *   and minor numbers; the shared-library major version number will be
@@ -223,7 +225,7 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.5.17rc01, June 17, 2013, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.18beta01, August 21, 2013, are
  * Copyright (c) 2004, 2006-2013 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:
@@ -335,13 +337,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    June 17, 2013
+ *    August 21, 2013
  *
  *    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 1.5.17rc01 are Y2K compliant.  It is my belief that
+ *    upward through 1.5.18beta01 are Y2K compliant.  It is my belief that
  *    earlier versions were also Y2K compliant.
  *
  *    Libpng only has two year fields.  One is a 2-byte unsigned integer
@@ -400,9 +402,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.5.17rc01"
+#define PNG_LIBPNG_VER_STRING "1.5.18beta01"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.5.17rc01 - June 17, 2013\n"
+     " libpng version 1.5.18beta01 - August 21, 2013\n"
 
 #define PNG_LIBPNG_VER_SONUM   15
 #define PNG_LIBPNG_VER_DLLNUM  15
@@ -410,7 +412,7 @@
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
 #define PNG_LIBPNG_VER_MINOR   5
-#define PNG_LIBPNG_VER_RELEASE 17
+#define PNG_LIBPNG_VER_RELEASE 18
 
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero:
@@ -433,7 +435,7 @@
 #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
                                        PNG_LIBPNG_BUILD_PRIVATE */
 
-#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_RC
+#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_BETA
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
@@ -441,7 +443,7 @@
  * version 1.0.0 was mis-numbered 100 instead of 10000).  From
  * version 1.0.1 it's    xxyyzz, where x=major, y=minor, z=release
  */
-#define PNG_LIBPNG_VER 10517 /* 1.5.17 */
+#define PNG_LIBPNG_VER 10518 /* 1.5.18 */
 
 /* Library configuration: these options cannot be changed after
  * the library has been built.
@@ -563,7 +565,7 @@ extern "C" {
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef char* png_libpng_version_1_5_17rc01;
+typedef char* png_libpng_version_1_5_18beta01;
 
 /* Three color definitions.  The order of the red, green, and blue, (and the
  * exact size) is not important, although the size of the fields need to

pngconf.h

@@ -1,7 +1,7 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.5.17rc01 - June 17, 2013
+ * libpng version 1.5.18beta01 - August 21, 2013
  *
  * Copyright (c) 1998-2013 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

pngpread.c

@@ -151,7 +151,7 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr)
 void /* PRIVATE */
 png_push_read_sig(png_structp png_ptr, png_infop info_ptr)
 {
-   png_size_t num_checked = png_ptr->sig_bytes,
+   png_size_t num_checked = png_ptr->sig_bytes, /* SAFE, does not exceed 8 */ 
        num_to_check = 8 - num_checked;
 
    if (png_ptr->buffer_size < num_to_check)

pngrtran.c

@@ -1,7 +1,7 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * Last changed in libpng 1.5.16 [May 23, 2013]
+ * Last changed in libpng 1.5.18 [(PENDING RELEASE)]
  * Copyright (c) 1998-2013 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.)
@@ -1095,12 +1095,18 @@ png_init_palette_transformations(png_structp png_ptr)
 
       /* Ignore if all the entries are opaque (unlikely!) */
       for (i=0; i<png_ptr->num_trans; ++i)
+      {
          if (png_ptr->trans_alpha[i] == 255)
             continue;
          else if (png_ptr->trans_alpha[i] == 0)
             input_has_transparency = 1;
          else
+         {
+            input_has_transparency = 1;
             input_has_alpha = 1;
+            break;
+         }
+      }
    }
 
    /* If no alpha we can optimize. */

pngrutil.c

@@ -1,7 +1,7 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * Last changed in libpng 1.5.16 [May 23, 2013]
+ * Last changed in libpng 1.5.18 [(PENDING RELEASE)]
  * Copyright (c) 1998-2013 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.)
@@ -3484,7 +3484,7 @@ png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
 
             for (i = 0; i < row_info->width; i++)
             {
-               png_byte v[8];
+               png_byte v[8]; /* SAFE; pixel_depth does not exceed 64 */
                int j;
 
                png_memcpy(v, sp, pixel_bytes);
@@ -3700,10 +3700,13 @@ void /* PRIVATE */
 png_read_filter_row(png_structp pp, png_row_infop row_info, png_bytep row,
    png_const_bytep prev_row, int filter)
 {
-   if (pp->read_filter[0] == NULL)
-      png_init_filter_functions(pp);
    if (filter > PNG_FILTER_VALUE_NONE && filter < PNG_FILTER_VALUE_LAST)
+   {
+      if (pp->read_filter[0] == NULL)
+         png_init_filter_functions(pp);
+
       pp->read_filter[filter-1](row_info, row, prev_row);
+   }
 }
 
 #ifdef PNG_SEQUENTIAL_READ_SUPPORTED

pngset.c

@@ -1,7 +1,7 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.5.17 [(PENDING RELEASE)]
+ * Last changed in libpng 1.5.17 [June 27, 2013]
  * Copyright (c) 1998-2013 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.)

pngtest.c

@@ -1962,4 +1962,4 @@ main(void)
 #endif
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_5_17rc01 Your_png_h_is_not_version_1_5_17rc01;
+typedef png_libpng_version_1_5_18beta01 Your_png_h_is_not_version_1_5_18beta01;

projects/vstudio/readme.txt

@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.5.17rc01 - June 17, 2013
+libpng version 1.5.18beta01 - August 21, 2013
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 

projects/vstudio/zlib.props

@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.5.17rc01 - June 17, 2013
+ * libpng version 1.5.18beta01 - August 21, 2013
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *

scripts/README.txt

@@ -1,9 +1,9 @@
 
-Makefiles for  libpng version 1.5.17rc01 - June 17, 2013
+Makefiles for  libpng version 1.5.18beta01 - August 21, 2013
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng15.so.15.1.5.17rc01)
+                       (gcc, creates libpng15.so.15.1.5.18beta01)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
                        ansi2knr (Requires ansi2knr.c from
@@ -21,7 +21,7 @@ pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.dec      =>  DEC Alpha UNIX makefile
  makefile.dj2      =>  DJGPP 2 makefile
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       (gcc, creates libpng15.so.15.1.5.17rc01)
+                       (gcc, creates libpng15.so.15.1.5.18beta01)
  makefile.freebsd  =>  FreeBSD makefile
  makefile.gcc      =>  Generic gcc makefile
  makefile.hpgcc    =>  HPUX makefile using gcc
@@ -36,12 +36,12 @@ pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.os2      =>  OS/2 Makefile (gcc and emx, requires libpng.def)
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng15.so.15.1.5.17rc01)
+                       creates libpng15.so.15.1.5.18beta01)
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng15.so.15.1.5.17rc01)
+                       creates libpng15.so.15.1.5.18beta01)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng15.so.15.1.5.17rc01)
+                       creates libpng15.so.15.1.5.18beta01)
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.sunos    =>  Sun makefile
  makefile.32sunu   =>  Sun Ultra 32-bit makefile

scripts/libpng-config-head.in

@@ -11,7 +11,7 @@
 
 # Modeled after libxml-config.
 
-version=1.5.17rc01
+version=1.5.18beta01
 prefix=""
 libdir=""
 libs=""

scripts/libpng.pc.in

@@ -5,6 +5,6 @@ includedir=@includedir@/libpng15
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.5.17rc01
+Version: 1.5.18beta01
 Libs: -L${libdir} -lpng15
 Cflags: -I${includedir}

scripts/makefile.cegcc

@@ -23,7 +23,7 @@
 
 VERMAJ = 1
 VERMIN = 5
-VERMIC = 17
+VERMIC = 18
 VER = $(VERMAJ).$(VERMIN).$(VERMIC)
 NAME = libpng
 PACKAGE = $(NAME)-$(VER)

scripts/makefile.linux

@@ -10,7 +10,7 @@
 # Library name:
 LIBNAME = libpng15
 PNGMAJ = 15
-RELEASE = 17
+RELEASE = 18
 
 # Shared library names:
 LIBSO=$(LIBNAME).so

scripts/makefile.msys

@@ -18,7 +18,7 @@ exec_prefix=$(prefix)
 # Library name:
 LIBNAME = libpng15
 PNGMAJ = 15
-RELEASE = 17
+RELEASE = 18
 
 # Shared library names:
 LIBSO=$(LIBNAME).dll

scripts/makefile.ne12bsd

@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng15
 
 LIB=	png15
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.5.17rc01
+SHLIB_MINOR=	1.5.18beta01
 SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c

scripts/makefile.netbsd

@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include
 
 LIB=	png
 SHLIB_MAJOR=	15
-SHLIB_MINOR=	1.5.17rc01
+SHLIB_MINOR=	1.5.18beta01
 SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c

scripts/makefile.openbsd

@@ -11,7 +11,7 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	15
-SHLIB_MINOR=	1.5.17rc01
+SHLIB_MINOR=	1.5.18beta01
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \

scripts/pnglibconf.h.prebuilt

@@ -1,7 +1,7 @@
-/* 1.5.17rc01 STANDARD API DEFINITION */
+/* 1.5.18beta01 STANDARD API DEFINITION */
 /* pnglibconf.h - library build configuration */
 
-/* libpng version 1.5.17rc01 - June 17, 2013 */
+/* libpng version 1.5.18beta01 - August 21, 2013 */
 
 /* Copyright (c) 1998-2013 Glenn Randers-Pehrson */
 

scripts/symbols.def

@@ -1,4 +1,4 @@
-;Version 1.5.17rc01
+;Version 1.5.18beta01
 ;--------------------------------------------------------------
 ; LIBPNG symbol list as a Win32 DEF file
 ; Contains all the symbols that can be exported from libpng