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Imported from libpng-1.4.0beta30.tar

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This commit is contained in:
Glenn Randers-Pehrson
2008-08-14 13:44:49 -05:00
parent e0784c72f4
commit 1916f6ae42
63 changed files with 279 additions and 146 deletions
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15
pngtrans.c
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@@ -1,7 +1,7 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
* Last changed in libpng 1.4.0 [August 9, 2008]
* Last changed in libpng 1.4.0 [August 14, 2008]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2008 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -162,6 +162,19 @@ png_set_invert_alpha(png_structp png_ptr)
}
#endif
#if defined(PNG_READ_PREMULTIPLY_ALPHA_SUPPORTED)
void PNGAPI
png_set_premultiply_alpha(png_structp png_ptr)
{
png_debug(1, "in png_set_premultiply_alpha\n");
if(png_ptr == NULL) return;
png_ptr->transformations |= PNG_PREMULTIPLY_ALPHA;
png_set_palette_to_rgb(png_ptr);
png_set_expand_gray_1_2_4_to_8(png_ptr);
png_set_tRNS_to_alpha(png_ptr);
}
#endif
#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
void PNGAPI
png_set_invert_mono(png_structp png_ptr)