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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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11
pngmem.c
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@@ -1,7 +1,7 @@
/* pngmem.c - stub functions for memory allocation
*
* Last changed in libpng 1.4.0 July 13, 2006
* Last changed in libpng 1.4.0 November 14, 2006
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2006 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -137,6 +137,9 @@ png_malloc_default(png_structp png_ptr, png_alloc_size_t size)
png_voidp ret;
#endif /* PNG_USER_MEM_SUPPORTED */
if (png_ptr == NULL || size == 0)
return (NULL);
#ifdef PNG_MAX_MALLOC_64K
if (size > (png_alloc_size_t)65536L)
{
@@ -293,6 +296,8 @@ png_free_default(png_structp png_ptr, png_voidp ptr)
{
#endif /* PNG_USER_MEM_SUPPORTED */
if(png_ptr == NULL) return;
if (png_ptr->offset_table != NULL)
{
int i;
@@ -493,6 +498,7 @@ png_voidp PNGAPI
png_malloc_warn(png_structp png_ptr, png_alloc_size_t size)
{
png_voidp ptr;
if(png_ptr == NULL) return (NULL);
png_uint_32 save_flags=png_ptr->flags;
png_ptr->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK;
@@ -509,9 +515,11 @@ void PNGAPI
png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr
malloc_fn, png_free_ptr free_fn)
{
if(png_ptr != NULL) {
png_ptr->mem_ptr = mem_ptr;
png_ptr->malloc_fn = malloc_fn;
png_ptr->free_fn = free_fn;
}
}
/* This function returns a pointer to the mem_ptr associated with the user
@@ -521,6 +529,7 @@ png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr
png_voidp PNGAPI
png_get_mem_ptr(png_structp png_ptr)
{
if(png_ptr == NULL) return (NULL);
return ((png_voidp)png_ptr->mem_ptr);
}
#endif /* PNG_USER_MEM_SUPPORTED */