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[master] Ported functions from libpng-1.4.0rc01:

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png_calloc(), png_get_io_state(),
    png_get_io_chunk_name(), png_set_premultiply_alpha, and
    png_do_read_premultiply_alpha().
This commit is contained in:
Glenn Randers-Pehrson
2009-10-29 23:47:05 -05:00
parent bc2ab12f99
commit 4b14b35208
17 changed files with 626 additions and 48 deletions
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20
pngmem.c
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@@ -114,6 +114,16 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
* result, we would be truncating potentially larger memory requests
* (which should cause a fatal error) and introducing major problems.
*/
png_voidp PNGAPI
png_calloc(png_structp png_ptr, png_uint_32 size)
{
png_voidp ret;
ret = (png_malloc(png_ptr, size));
if (ret != NULL)
png_memset(ret,0,(png_size_t)size);
return (ret);
}
png_voidp PNGAPI
png_malloc(png_structp png_ptr, png_uint_32 size)
@@ -431,6 +441,16 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
* have the ability to do that.
*/
png_voidp PNGAPI
png_calloc(png_structp png_ptr, png_uint_32 size)
{
png_voidp ret;
ret = (png_malloc(png_ptr, size));
if (ret != NULL)
png_memset(ret,0,(png_size_t)size);
return (ret);
}
png_voidp PNGAPI
png_malloc(png_structp png_ptr, png_uint_32 size)