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Imported from libpng-1.0.9beta10.tar

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This commit is contained in:
Glenn Randers-Pehrson
2001-01-15 22:01:20 -06:00
parent 5e5c1e1f56
commit fbbb5ecb52
100 changed files with 2541 additions and 1279 deletions
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69
pngset.c
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@@ -1,9 +1,9 @@
/* pngset.c - storage of image information into info struct
*
* libpng 1.0.9beta1 - November 10, 2000
* libpng 1.0.9beta10 - January 16, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@@ -133,12 +133,31 @@ png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
void PNGAPI
png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
{
int i;
png_debug1(1, "in %s storage function\n", "hIST");
if (png_ptr == NULL || info_ptr == NULL)
return;
if (info_ptr->num_palette == 0)
png_warning(png_ptr,
"Palette size 0, hIST allocation skipped.");
info_ptr->hist = hist;
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
#endif
png_ptr->hist = (png_uint_16p)png_malloc(png_ptr,
(png_uint_32)(info_ptr->num_palette * sizeof (png_uint_16)));
for (i = 0; i < info_ptr->num_palette; i++)
png_ptr->hist[i] = hist[i];
info_ptr->hist = png_ptr->hist;
info_ptr->valid |= PNG_INFO_hIST;
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_HIST;
#else
png_ptr->flags |= PNG_FLAG_FREE_HIST;
#endif
}
#endif
@@ -320,9 +339,26 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
if (png_ptr == NULL || info_ptr == NULL)
return;
info_ptr->palette = palette;
/*
* It may not actually be necessary to set png_ptr->palette here;
* we do it for backward compatibility with the way the png_handle_tRNS
* function used to do the allocation.
*/
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
#endif
png_ptr->palette = (png_colorp)png_zalloc(png_ptr, (uInt)num_palette,
sizeof (png_color));
memcpy(png_ptr->palette, palette, num_palette * sizeof (png_color));
info_ptr->palette = png_ptr->palette;
info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_PLTE;
#else
png_ptr->flags |= PNG_FLAG_FREE_PLTE;
#endif
info_ptr->num_palette = (png_uint_16)num_palette;
info_ptr->valid |= PNG_INFO_PLTE;
}
@@ -631,7 +667,23 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
return;
if (trans != NULL)
info_ptr->trans = trans;
{
/*
* It may not actually be necessary to set png_ptr->trans here;
* we do it for backward compatibility with the way the png_handle_tRNS
* function used to do the allocation.
*/
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
#endif
png_ptr->trans = info_ptr->trans = png_malloc(png_ptr, num_trans);
memcpy(info_ptr->trans, trans, num_trans);
#ifdef PNG_FREE_ME_SUPPORTED
info_ptr->free_me |= PNG_FREE_TRNS;
#else
png_ptr->flags |= PNG_FLAG_FREE_TRNS;
#endif
}
if (trans_values != NULL)
{
@@ -730,7 +782,7 @@ void PNGAPI
png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr,
int chunk, int location)
{
if(png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk <
if(png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk <
(int)info_ptr->unknown_chunks_num)
info_ptr->unknown_chunks[chunk].location = (png_byte)location;
}
@@ -842,6 +894,8 @@ png_set_compression_buffer_size(png_structp png_ptr, png_uint_32 size)
png_free(png_ptr, png_ptr->zbuf);
png_ptr->zbuf_size = (png_size_t)size;
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size);
if(!png_ptr->zbuf)
png_error(png_ptr,"Unable to malloc zbuf");
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
}
@@ -852,3 +906,4 @@ png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask)
if (png_ptr && info_ptr)
info_ptr->valid &= ~(mask);
}