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Imported from libpng-1.4.0beta14.tar

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This commit is contained in:
Glenn Randers-Pehrson
2006-11-14 10:53:30 -06:00
parent 3779c69674
commit 6b12c08bfc
56 changed files with 1112 additions and 130 deletions
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19
pngtrans.c
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@@ -18,6 +18,7 @@ void PNGAPI
png_set_bgr(png_structp png_ptr)
{
png_debug(1, "in png_set_bgr\n");
if(png_ptr == NULL) return;
png_ptr->transformations |= PNG_BGR;
}
#endif
@@ -28,6 +29,7 @@ void PNGAPI
png_set_swap(png_structp png_ptr)
{
png_debug(1, "in png_set_swap\n");
if(png_ptr == NULL) return;
if (png_ptr->bit_depth == 16)
png_ptr->transformations |= PNG_SWAP_BYTES;
}
@@ -39,6 +41,7 @@ void PNGAPI
png_set_packing(png_structp png_ptr)
{
png_debug(1, "in png_set_packing\n");
if(png_ptr == NULL) return;
if (png_ptr->bit_depth < 8)
{
png_ptr->transformations |= PNG_PACK;
@@ -53,6 +56,7 @@ void PNGAPI
png_set_packswap(png_structp png_ptr)
{
png_debug(1, "in png_set_packswap\n");
if(png_ptr == NULL) return;
if (png_ptr->bit_depth < 8)
png_ptr->transformations |= PNG_PACKSWAP;
}
@@ -63,6 +67,7 @@ void PNGAPI
png_set_shift(png_structp png_ptr, png_color_8p true_bits)
{
png_debug(1, "in png_set_shift\n");
if(png_ptr == NULL) return;
png_ptr->transformations |= PNG_SHIFT;
png_ptr->shift = *true_bits;
}
@@ -74,7 +79,7 @@ int PNGAPI
png_set_interlace_handling(png_structp png_ptr)
{
png_debug(1, "in png_set_interlace handling\n");
if (png_ptr->interlaced)
if (png_ptr && png_ptr->interlaced)
{
png_ptr->transformations |= PNG_INTERLACE;
return (7);
@@ -94,6 +99,7 @@ void PNGAPI
png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
{
png_debug(1, "in png_set_filler\n");
if(png_ptr == NULL) return;
png_ptr->transformations |= PNG_FILLER;
png_ptr->filler = (png_byte)filler;
if (filler_loc == PNG_FILLER_AFTER)
@@ -125,6 +131,7 @@ void PNGAPI
png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
{
png_debug(1, "in png_set_add_alpha\n");
if(png_ptr == NULL) return;
png_set_filler(png_ptr, filler, filler_loc);
png_ptr->transformations |= PNG_ADD_ALPHA;
}
@@ -137,6 +144,7 @@ void PNGAPI
png_set_swap_alpha(png_structp png_ptr)
{
png_debug(1, "in png_set_swap_alpha\n");
if(png_ptr == NULL) return;
png_ptr->transformations |= PNG_SWAP_ALPHA;
}
#endif
@@ -147,6 +155,7 @@ void PNGAPI
png_set_invert_alpha(png_structp png_ptr)
{
png_debug(1, "in png_set_invert_alpha\n");
if(png_ptr == NULL) return;
png_ptr->transformations |= PNG_INVERT_ALPHA;
}
#endif
@@ -156,6 +165,7 @@ void PNGAPI
png_set_invert_mono(png_structp png_ptr)
{
png_debug(1, "in png_set_invert_mono\n");
if(png_ptr == NULL) return;
png_ptr->transformations |= PNG_INVERT_MONO;
}
@@ -619,6 +629,7 @@ png_set_user_transform_info(png_structp png_ptr, png_voidp
user_transform_ptr, int user_transform_depth, int user_transform_channels)
{
png_debug(1, "in png_set_user_transform_info\n");
if(png_ptr == NULL) return;
#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
png_ptr->user_transform_ptr = user_transform_ptr;
png_ptr->user_transform_depth = (png_byte)user_transform_depth;
@@ -639,12 +650,10 @@ png_set_user_transform_info(png_structp png_ptr, png_voidp
png_voidp PNGAPI
png_get_user_transform_ptr(png_structp png_ptr)
{
if (png_ptr == NULL) return (NULL);
#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
return ((png_voidp)png_ptr->user_transform_ptr);
#else
if(png_ptr)
return (NULL);
return (NULL);
#endif
return (NULL);
}
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */