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Imported from libpng-0.98.tar

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This commit is contained in:
Glenn Randers-Pehrson
1998-01-16 22:06:18 -06:00
parent 2687fcc7b5
commit c4a2ae6cac
26 changed files with 687 additions and 240 deletions
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27
pngmem.c
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@@ -1,12 +1,11 @@
/* pngmem.c - stub functions for memory allocation
*
* libpng 0.97
* libpng 0.98
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson
* January 7, 1998
* January 16, 1998
*
* This file provides a location for all memory allocation. Users which
* need special memory handling are expected to modify the code in this file
@@ -16,6 +15,16 @@
#define PNG_INTERNAL
#include "png.h"
/* The following "hides" PNG_MALLOC and PNG_FREE thus allowing the pngtest
application to put a wrapper on top of them. */
#ifdef PNGTEST_MEMORY_DEBUG
#define PNG_MALLOC png_debug_malloc
#define PNG_FREE png_debug_free
#else
#define PNG_MALLOC png_malloc
#define PNG_FREE png_free
#endif
/* Borland DOS special memory handler */
#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
/* if you change this, be sure to change the one in png.h also */
@@ -72,7 +81,7 @@ png_destroy_struct(png_voidp struct_ptr)
* (which should cause a fatal error) and introducing major problems.
*/
png_voidp
png_malloc(png_structp png_ptr, png_uint_32 size)
PNG_MALLOC(png_structp png_ptr, png_uint_32 size)
{
png_voidp ret;
if (png_ptr == NULL || size == 0)
@@ -166,11 +175,11 @@ png_malloc(png_structp png_ptr, png_uint_32 size)
return ret;
}
/* free a pointer allocated by png_malloc(). In the default
/* free a pointer allocated by PNG_MALLOC(). In the default
configuration, png_ptr is not used, but is passed in case it
is needed. If ptr is NULL, return without taking any action. */
void
png_free(png_structp png_ptr, png_voidp ptr)
PNG_FREE(png_structp png_ptr, png_voidp ptr)
{
if (png_ptr == NULL || ptr == NULL)
return;
@@ -260,7 +269,7 @@ png_destroy_struct(png_voidp struct_ptr)
have the ability to do that. */
png_voidp
png_malloc(png_structp png_ptr, png_uint_32 size)
PNG_MALLOC(png_structp png_ptr, png_uint_32 size)
{
png_voidp ret;
if (png_ptr == NULL || size == 0)
@@ -289,11 +298,11 @@ png_malloc(png_structp png_ptr, png_uint_32 size)
return ret;
}
/* Free a pointer allocated by png_malloc(). In the default
/* Free a pointer allocated by PNG_MALLOC(). In the default
configuration, png_ptr is not used, but is passed in case it
is needed. If ptr is NULL, return without taking any action. */
void
png_free(png_structp png_ptr, png_voidp ptr)
PNG_FREE(png_structp png_ptr, png_voidp ptr)
{
if (png_ptr == NULL || ptr == NULL)
return;