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[libpng15] Corrected Android builds and corrected libpng.vers with symbol

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prefixing This adds an API to set optimization options externally,
    providing an alternative and general solution for the non-portable
    run-time tests used by the ARM Neon code.  It also makes those tests
    compile and link on Android.
  The order of settings vs options in pnglibconf.h is reversed to allow
    settings to depend on options and options can now set (or override) the
    defaults for settings.
This commit is contained in:
John Bowler
2013-03-04 16:44:59 -06:00
committed by Glenn Randers-Pehrson
parent 85d027f3d0
commit c34143f615
16 changed files with 563 additions and 270 deletions
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25
png.c
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@@ -658,13 +658,13 @@ png_get_copyright(png_const_structp png_ptr)
#else
# ifdef __STDC__
return PNG_STRING_NEWLINE \
"libpng version 1.5.15beta08 - February 27, 2013" PNG_STRING_NEWLINE \
"libpng version 1.5.15beta08 - March 4, 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 1.5.15beta08 - February 27, 2013\
return "libpng version 1.5.15beta08 - March 4, 2013\
Copyright (c) 1998-2013 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
@@ -2878,3 +2878,24 @@ png_build_gamma_table(png_structp png_ptr, int bit_depth)
}
#endif /* READ_GAMMA */
#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
/* HARDWARE OPTION SUPPORT */
#ifdef PNG_SET_OPTION_SUPPORTED
int PNGAPI
png_set_option(png_structp png_ptr, int option, int onoff)
{
if (png_ptr != NULL && option >= 0 && option < PNG_OPTION_NEXT &&
(option & 1) == 0)
{
int mask = 3 << option;
int setting = (2 + (onoff != 0)) << option;
int current = png_ptr->options;
png_ptr->options = (png_byte)((current & ~mask) | setting);
return (current & mask) >> option;
}
return PNG_OPTION_INVALID;
}
#endif