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Imported from libpng-0.99.tar

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This commit is contained in:
Glenn Randers-Pehrson
1998-01-30 21:45:12 -06:00
parent c4a2ae6cac
commit 46f61e2398
25 changed files with 856 additions and 187 deletions
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30
pngmem.c
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@@ -1,11 +1,11 @@
/* pngmem.c - stub functions for memory allocation
*
* libpng 0.98
* libpng 0.99
* 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 16, 1998
* January 30, 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
@@ -58,7 +58,10 @@ void
png_destroy_struct(png_voidp struct_ptr)
{
if (struct_ptr != NULL)
{
farfree (struct_ptr);
struct_ptr = NULL;
}
}
/* Allocate memory. For reasonable files, size should never exceed
@@ -107,8 +110,10 @@ PNG_MALLOC(png_structp png_ptr, png_uint_32 size)
png_byte huge * hptr;
if (ret != NULL)
{
farfree(ret);
ret = NULL;
ret = NULL;
}
num_blocks = (int)(1 << (png_ptr->zlib_window_bits - 14));
if (num_blocks < 1)
@@ -124,7 +129,7 @@ PNG_MALLOC(png_structp png_ptr, png_uint_32 size)
if (table == NULL)
{
png_error(png_ptr, "Out of Memory");
png_error(png_ptr, "Out Of Memory."); /* Note "O" and "M" */
}
if ((png_size_t)table & 0xfff0)
@@ -138,7 +143,7 @@ PNG_MALLOC(png_structp png_ptr, png_uint_32 size)
if (png_ptr->offset_table_ptr == NULL)
{
png_error(png_ptr, "Out of memory");
png_error(png_ptr, "Out Of memory.");
}
hptr = (png_byte huge *)table;
@@ -160,7 +165,7 @@ PNG_MALLOC(png_structp png_ptr, png_uint_32 size)
}
if (png_ptr->offset_table_count >= png_ptr->offset_table_number)
png_error(png_ptr, "Out of Memory");
png_error(png_ptr, "Out of Memory.");
ret = png_ptr->offset_table_ptr[png_ptr->offset_table_count++];
}
@@ -169,7 +174,7 @@ PNG_MALLOC(png_structp png_ptr, png_uint_32 size)
if (ret == NULL)
{
png_error(png_ptr, "Out of Memory");
png_error(png_ptr, "Out of memory."); /* Note "o" and "m" */
}
return ret;
@@ -207,7 +212,10 @@ PNG_FREE(png_structp png_ptr, png_voidp ptr)
}
if (ptr != NULL)
{
farfree(ptr);
ptr = NULL;
}
}
#else /* Not the Borland DOS special memory handler */
@@ -250,15 +258,20 @@ void
png_destroy_struct(png_voidp struct_ptr)
{
if (struct_ptr != NULL)
{
#if defined(__TURBOC__) && !defined(__FLAT__)
farfree(struct_ptr);
struct_ptr = NULL;
#else
# if defined(_MSC_VER) && defined(MAXSEG_64K)
hfree(struct_ptr);
struct_ptr = NULL;
# else
free(struct_ptr);
struct_ptr = NULL;
# endif
#endif
}
}
@@ -309,11 +322,14 @@ PNG_FREE(png_structp png_ptr, png_voidp ptr)
#if defined(__TURBOC__) && !defined(__FLAT__)
farfree(ptr);
ptr = NULL;
#else
# if defined(_MSC_VER) && defined(MAXSEG_64K)
hfree(ptr);
ptr = NULL;
# else
free(ptr);
ptr = NULL;
# endif
#endif
}