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[libpng17] Ported recent changes from libpng16 to libpng17

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Fixed 'minimal' builds. Various obviously useful minimal configurations
  don't build because of missing contrib/libtests test programs and overly
  complex dependencies in scripts/pnglibconf.dfa. This change adds
  contrib/conftest/*.dfa files that can be used in automatic build
  scripts to ensure that these configurations continue to build.
Enabled WRITE_INVERT and WRITE_PACK in contrib/pngminim/encoder.
This commit is contained in:
John Bowler
2013-11-22 17:41:20 -06:00
committed by Glenn Randers-Pehrson
parent 81824079b5
commit 7e2707e2af
35 changed files with 738 additions and 271 deletions
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23
pngerror.c
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@@ -382,6 +382,10 @@ png_benign_error(png_const_structrp png_ptr, png_const_charp error_message)
# endif
png_error(png_ptr, error_message);
}
# ifndef PNG_ERROR_TEXT_SUPPORTED
PNG_UNUSED(error_message)
# endif
}
void /* PRIVATE */
@@ -391,6 +395,10 @@ png_app_warning(png_const_structrp png_ptr, png_const_charp error_message)
png_warning(png_ptr, error_message);
else
png_error(png_ptr, error_message);
# ifndef PNG_ERROR_TEXT_SUPPORTED
PNG_UNUSED(error_message)
# endif
}
void /* PRIVATE */
@@ -400,6 +408,10 @@ png_app_error(png_const_structrp png_ptr, png_const_charp error_message)
png_warning(png_ptr, error_message);
else
png_error(png_ptr, error_message);
# ifndef PNG_ERROR_TEXT_SUPPORTED
PNG_UNUSED(error_message)
# endif
}
#endif /* BENIGN_ERRORS */
@@ -416,7 +428,8 @@ static PNG_CONST char png_digit[16] = {
};
#define PNG_MAX_ERROR_TEXT 196 /* Currently limited be profile_error in png.c */
#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED)
#if defined(PNG_WARNINGS_SUPPORTED) || \
(defined(PNG_READ_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED))
static void /* PRIVATE */
png_format_buffer(png_const_structrp png_ptr, png_charp buffer, png_const_charp
error_message)
@@ -506,6 +519,10 @@ png_chunk_benign_error(png_const_structrp png_ptr, png_const_charp
else
png_chunk_error(png_ptr, error_message);
# ifndef PNG_ERROR_TEXT_SUPPORTED
PNG_UNUSED(error_message)
# endif
}
#endif
#endif /* PNG_READ_SUPPORTED */
@@ -513,6 +530,10 @@ png_chunk_benign_error(png_const_structrp png_ptr, png_const_charp
void /* PRIVATE */
png_chunk_report(png_const_structrp png_ptr, png_const_charp message, int error)
{
# ifndef PNG_WARNINGS_SUPPORTED
PNG_UNUSED(message)
# endif
/* This is always supported, but for just read or just write it
* unconditionally does the right thing.
*/