mewin/libpng
1
0
Fork 0
mirror of https://git.code.sf.net/p/libpng/code.git synced 2025-07-10 18:04:09 +02:00
Code Issues Projects Releases Wiki Activity

[master] Imported from libpng-1.6.3.tar

Browse Source
This commit is contained in:
Glenn Randers-Pehrson
2013-07-17 19:03:02 -05:00
parent a4f7ea0d11
commit fca68966b2
46 changed files with 4869 additions and 378 deletions
Download Patch File Download Diff File Expand all files Collapse all files

53
scripts/pnglibconf.dfa
View File

@@ -119,7 +119,7 @@ logunsupported = 1
#
# If you create a private DLL you need to define the following
# macros in the file 'pngusr.h' and set -DPNG_USER_CONFIG for
# compilation (i.e. in CFLAGS.)
# compilation (i.e. in CPPFLAGS.)
# #define PNG_USER_PRIVATEBUILD \
# <Describes by whom and why this version of the DLL was built>
# e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
@@ -158,12 +158,6 @@ logunsupported = 1
@# endif
@#endif
# This changes the default for the ARM NEON optimizations according to
# __ARM_NEON__
@#ifdef __ARM_NEON__
@# define PNG_ARM_NEON_SUPPORTED
@#endif
# IN DEVELOPMENT
# These are currently experimental features; define them if you want (NOTE:
# experimental options must be disabled before they are defined in this file!)
@@ -199,28 +193,38 @@ setting PREFIX
setting DEFAULT_READ_MACROS default 1
# This setting allows a hardware or configuration specific filter optimization
# function to be specified, the argument is the name of the filter initializaion
# function to use.
setting FILTER_OPTIMIZATIONS
# Implementation specific control of the optimizations, enabled by those
# hardware or software options that need it (typically when run-time choices
# must be made by the user)
option SET_OPTION disabled
# These options are specific to the ARM NEON hardware optimizations:
# These options are specific to the ARM NEON hardware optimizations. At present
# these optimizations depend on GCC specific pre-processing of an assembler (.S)
# file so they probably won't work with other compilers.
#
# ARM_NEON: the optimization itself
# ARM_NEON_API: allow the optimization to be switched on with png_set_hardware
# ARM_NEON_CHECK: compile a run-time check to see if Neon extensions are
# supported, this is poorly supported and deprectated - use the
# png_set_hardware API.
option ARM_NEON disabled,
sets FILTER_OPTIMIZATIONS png_init_filter_functions_neon
option ARM_NEON_API disabled enables SET_OPTION ARM_NEON
option ARM_NEON_CHECK disabled enables ARM_NEON
# ARM_NEON_OPT: unset: check at compile time (__ARM_NEON__ must be defined by
# the compiler, typically as a result of specifying
# CC="gcc -mfpu=neon".)
# 0: disable (even if the CPU has a NEON FPU.)
# 1: check at run time (via ARM_NEON_{API,CHECK})
# 2: switch on unconditionally (inadvisable - instead pass
# -mfpu=neon to GCC in CC)
# When building libpng avoid using any setting other than '0'; '1' is
# set automatically when either 'API' or 'CHECK' are configured in,
# '2' should not be necessary as -mfpu=neon will achieve the same
# effect as well as applying NEON optimizations to the rest of the
# libpng code.
# NOTE: any setting other than '0' requires ALIGNED_MEMORY
# ARM_NEON_API: (PNG_ARM_NEON == 1) allow the optimization to be switched on
# with png_set_option
# ARM_NEON_CHECK: (PNG_ARM_NEON == 1) compile a run-time check to see if Neon
# extensions are supported, this is poorly supported and
# deprectated - use the png_set_option API.
setting ARM_NEON_OPT
option ARM_NEON_API disabled requires ALIGNED_MEMORY enables SET_OPTION,
sets ARM_NEON_OPT 1
option ARM_NEON_CHECK disabled requires ALIGNED_MEMORY,
sets ARM_NEON_OPT 1
# These settings configure the default compression level (0-9) and 'strategy';
# strategy is as defined by the implementors of zlib, it describes the input
@@ -238,6 +242,7 @@ option ARM_NEON_CHECK disabled enables ARM_NEON
setting Z_DEFAULT_COMPRESSION default @Z_DEFAULT_COMPRESSION
setting Z_DEFAULT_STRATEGY default @Z_FILTERED
setting Z_DEFAULT_NOFILTER_STRATEGY default @Z_DEFAULT_STRATEGY
setting ZLIB_VERNUM default @ZLIB_VERNUM
setting TEXT_Z_DEFAULT_COMPRESSION default @Z_DEFAULT_COMPRESSION
setting TEXT_Z_DEFAULT_STRATEGY default @Z_DEFAULT_STRATEGY
@@ -399,7 +404,7 @@ option SAFE_LIMITS enables USER_LIMITS disabled
# to libpng 1.6; the new interfaces in 1.6 will take several years to become
# popular.
option READ enables READ_INTERLACING
option READ enables READ_INTERLACING SET_OPTION
# Disabling READ_16BIT does not disable reading 16-bit PNG files, but it
# forces them to be chopped down to 8-bit, and disables any 16-bit