Merge branch 'upstream' into tizen

[platform/upstream/libpng.git] / scripts / pnglibconf.dfa

diff --git a/scripts/pnglibconf.dfa b/scripts/pnglibconf.dfa
index adffd30..8451c77 100644 (file)
--- a/scripts/pnglibconf.dfa
+++ b/scripts/pnglibconf.dfa
@@ -8,7 +8,8 @@ com pnglibconf.h - library build configuration
 com
 version
 com
 com
 version
 com

-com Copyright (c) 1998-2016 Glenn Randers-Pehrson
+com Copyright (c) 2018-2023 Cosmin Truta
+com Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson

 com
 com This code is released under the libpng license.
 com For conditions of distribution and use, see the disclaimer
 com
 com This code is released under the libpng license.
 com For conditions of distribution and use, see the disclaimer


@@ -68,9 +69,9 @@ file pnglibconf.h scripts/pnglibconf.dfa PNGLCONF_H
 #
 # 1) Create 'pngusr.h', enter the required private build information
 # detailed below and #define PNG_NO_<option> for each option you
 #
 # 1) Create 'pngusr.h', enter the required private build information
 # detailed below and #define PNG_NO_<option> for each option you

-# don't want in that file in that file.  You can also turn on options
-# using PNG_<option>_SUPPORTED.  When you have finished rerun
-# configure and rebuild pnglibconf.h file with -DPNG_USER_CONFIG:
+# don't want in that file.  You can also turn on options using
+# PNG_<option>_SUPPORTED.  When you have finished, rerun configure
+# and rebuild pnglibconf.h file with -DPNG_USER_CONFIG:

 #
 #  make clean
 #  CPPFLAGS='-DPNG_USER_CONFIG' ./configure
 #
 #  make clean
 #  CPPFLAGS='-DPNG_USER_CONFIG' ./configure


@@ -189,7 +190,7 @@ setting USER_VERSIONINFO_LEGALTRADEMARKS
 
 setting API_RULE default 0
 
 
 setting API_RULE default 0
 

-# This allows a prefix to be added to the front of every API functon name (and
+# This allows a prefix to be added to the front of every API function name (and

 # therefore every symbol) by redefining all the function names with the prefix
 # at the end of pnglibconf.h.  It also turns on similar internal symbol renaming
 # by causing a similar build-time only file, pngprefix.h, to be generated.
 # therefore every symbol) by redefining all the function names with the prefix
 # at the end of pnglibconf.h.  It also turns on similar internal symbol renaming
 # by causing a similar build-time only file, pngprefix.h, to be generated.


@@ -229,6 +230,33 @@ option ARM_NEON_API disabled requires ALIGNED_MEMORY enables SET_OPTION,
 option ARM_NEON_CHECK disabled requires ALIGNED_MEMORY,
    sets ARM_NEON_OPT 1
 
 option ARM_NEON_CHECK disabled requires ALIGNED_MEMORY,
    sets ARM_NEON_OPT 1
 

+# These options are specific to the PowerPC VSX hardware optimizations.
+#
+# POWERPC_VSX_OPT: unset: check at compile time (__PPC64__,__ALTIVEC__,__VSX__
+#                      must be defined by the compiler, typically as a result
+#                      of specifying
+#                      "-mvsx -maltivec" compiler flags)
+#                   0: disable (even if the CPU supports VSX.)
+#                   1: check at run time (via POWERPC_VSX_{API,CHECK})
+#                   2: switch on unconditionally (inadvisable - instead pass
+#                      -mvsx -maltivec to compiler options)
+#           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 "-mvsx -maltivec" will achieve the same
+#           effect as well as applying VSX optimizations to the rest of the
+#           libpng code.
+# POWERPC_VSX_API:   (PNG_POWERPC_VSX == 1) allow the optimization to be switched on
+#                 with png_set_option
+# POWERPC_VSX_CHECK: (PNG_POWERPC_VSX == 1) compile a run-time check to see if VSX
+#                 extensions are supported. This is supported not for all OSes
+#                 (see contrib/powerpc/README)
+setting POWERPC_VSX_OPT
+option POWERPC_VSX_API disabled enables SET_OPTION,
+  sets POWERPC_VSX_OPT 1
+option POWERPC_VSX_CHECK disabled,
+  sets POWERPC_VSX_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
 # data and modifies the zlib parameters in an attempt to optimize the balance
 # These settings configure the default compression level (0-9) and 'strategy';
 # strategy is as defined by the implementors of zlib. It describes the input
 # data and modifies the zlib parameters in an attempt to optimize the balance


@@ -297,10 +325,10 @@ option WRITE_INT_FUNCTIONS disabled
 #     By default recoverable errors on write should just generate warnings,
 #     not generally safe because this allows the application to write invalid
 #     PNG files.  Applications should enable this themselves; it's useful
 #     By default recoverable errors on write should just generate warnings,
 #     not generally safe because this allows the application to write invalid
 #     PNG files.  Applications should enable this themselves; it's useful

-#     because it means that a failure to write an ancilliary chunk can often be
+#     because it means that a failure to write an ancillary chunk can often be

 #     ignored.
 
 #     ignored.
 

-option WARNINGS
+option WARNINGS disabled

 option ERROR_TEXT
 option ERROR_NUMBERS disabled
 
 option ERROR_TEXT
 option ERROR_NUMBERS disabled
 


@@ -368,7 +396,7 @@ option IO_STATE
 option USER_LIMITS requires READ
 
 # The default settings given below for the limits mean that libpng will
 option USER_LIMITS requires READ
 
 # The default settings given below for the limits mean that libpng will

-# limit the size of images or the size of data in ancilliary chunks to less
+# limit the size of images or the size of data in ancillary chunks to less

 # than the specification or implementation limits. Settings have the
 # following interpretations:
 #
 # than the specification or implementation limits. Settings have the
 # following interpretations:
 #


@@ -532,7 +560,7 @@ option WRITE_CUSTOMIZE_ZTXT_COMPRESSION requires WRITE
 option WRITE_CUSTOMIZE_COMPRESSION requires WRITE
 
 # Any chunks you are not interested in, you can undef here.  The
 option WRITE_CUSTOMIZE_COMPRESSION requires WRITE
 
 # Any chunks you are not interested in, you can undef here.  The

-# ones that allocate memory may be expecially important (hIST,
+# ones that allocate memory may be especially important (hIST,

 # tEXt, zTXt, tRNS, pCAL).  Others will just save time and make png_info
 # a bit smaller.
 
 # tEXt, zTXt, tRNS, pCAL).  Others will just save time and make png_info
 # a bit smaller.
 


@@ -552,6 +580,7 @@ option WRITE_ANCILLARY_CHUNKS requires WRITE
 
 # These options disable *all* the text chunks if turned off
 
 
 # These options disable *all* the text chunks if turned off
 

+option TEXT disabled

 option READ_TEXT requires READ_ANCILLARY_CHUNKS enables TEXT
 option WRITE_TEXT requires WRITE_ANCILLARY_CHUNKS enables TEXT
 
 option READ_TEXT requires READ_ANCILLARY_CHUNKS enables TEXT
 option WRITE_TEXT requires WRITE_ANCILLARY_CHUNKS enables TEXT
 


@@ -687,7 +716,7 @@ setting sCAL_PRECISION default 5
 setting ZBUF_SIZE default 8192
 
 # This is the size of the decompression buffer used when counting or checking
 setting ZBUF_SIZE default 8192
 
 # This is the size of the decompression buffer used when counting or checking

-# the decompressed size of an LZ stream from a compressed ancilliary chunk; the
+# the decompressed size of an LZ stream from a compressed ancillary chunk; the

 # decompressed data is never used so a different size may be optimal.  This size
 # was determined using contrib/libtests/timepng.c with compressed zTXt data
 # around 11MByte in size.  Slight speed improvements (up to about 14% in
 # decompressed data is never used so a different size may be optimal.  This size
 # was determined using contrib/libtests/timepng.c with compressed zTXt data
 # around 11MByte in size.  Slight speed improvements (up to about 14% in


@@ -713,6 +742,7 @@ setting IDAT_READ_SIZE default PNG_ZBUF_SIZE
 # Ancillary chunks
 chunk bKGD
 chunk cHRM enables COLORSPACE
 # Ancillary chunks
 chunk bKGD
 chunk cHRM enables COLORSPACE

+chunk eXIf

 chunk gAMA enables GAMMA
 chunk hIST
 chunk iCCP enables COLORSPACE, GAMMA
 chunk gAMA enables GAMMA
 chunk hIST
 chunk iCCP enables COLORSPACE, GAMMA


@@ -873,9 +903,12 @@ option SIMPLIFIED_READ_BGR enables FORMAT_BGR,
 
 # Write:
 option SIMPLIFIED_WRITE,
 
 # Write:
 option SIMPLIFIED_WRITE,

-   requires WRITE STDIO, SETJMP, WRITE_SWAP, WRITE_PACK,
+   requires WRITE, SETJMP, WRITE_SWAP, WRITE_PACK,

       WRITE_tRNS, WRITE_gAMA, WRITE_sRGB, WRITE_cHRM
 
       WRITE_tRNS, WRITE_gAMA, WRITE_sRGB, WRITE_cHRM
 

+# 1.6.22: allow simplified write without stdio support:
+option SIMPLIFIED_WRITE_STDIO requires SIMPLIFIED_WRITE STDIO
+

 option SIMPLIFIED_WRITE_AFIRST enables FORMAT_AFIRST,
    requires SIMPLIFIED_WRITE WRITE_SWAP_ALPHA
 
 option SIMPLIFIED_WRITE_AFIRST enables FORMAT_AFIRST,
    requires SIMPLIFIED_WRITE WRITE_SWAP_ALPHA