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Imported from libpng-1.2.9beta1.tar

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This commit is contained in:
Glenn Randers-Pehrson
2006-02-20 22:09:05 -06:00
parent 917648ecb9
commit 9c3ab68145
76 changed files with 798 additions and 835 deletions
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34
pngwutil.c
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@@ -1,9 +1,9 @@
/* pngwutil.c - utilities to write a PNG file
*
* libpng version 1.2.8 - December 3, 2004
* libpng version 1.2.9beta1 - February 21, 2006
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2004 Glenn Randers-Pehrson
* Copyright (c) 1998-2006 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.)
*/
@@ -16,7 +16,7 @@
* with unsigned numbers for convenience, although one supported
* ancillary chunk uses signed (two's complement) numbers.
*/
void /* PRIVATE */
void PNGAPI
png_save_uint_32(png_bytep buf, png_uint_32 i)
{
buf[0] = (png_byte)((i >> 24) & 0xff);
@@ -30,7 +30,7 @@ png_save_uint_32(png_bytep buf, png_uint_32 i)
* complement format. If this isn't the case, then this routine needs to
* be modified to write data in two's complement format.
*/
void /* PRIVATE */
void PNGAPI
png_save_int_32(png_bytep buf, png_int_32 i)
{
buf[0] = (png_byte)((i >> 24) & 0xff);
@@ -44,7 +44,7 @@ png_save_int_32(png_bytep buf, png_int_32 i)
* The parameter is declared unsigned int, not png_uint_16,
* just to avoid potential problems on pre-ANSI C compilers.
*/
void /* PRIVATE */
void PNGAPI
png_save_uint_16(png_bytep buf, unsigned int i)
{
buf[0] = (png_byte)((i >> 8) & 0xff);
@@ -161,9 +161,11 @@ png_text_compress(png_structp png_ptr,
{
int ret;
comp->num_output_ptr = comp->max_output_ptr = 0;
comp->num_output_ptr = 0;
comp->max_output_ptr = 0;
comp->output_ptr = NULL;
comp->input = NULL;
comp->input_len = 0;
/* we may just want to pass the text right through */
if (compression == PNG_TEXT_COMPRESSION_NONE)
@@ -730,6 +732,13 @@ png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type,
compression_state comp;
png_debug(1, "in png_write_iCCP\n");
comp.num_output_ptr = 0;
comp.max_output_ptr = 0;
comp.output_ptr = NULL;
comp.input = NULL;
comp.input_len = 0;
if (name == NULL || (name_len = png_check_keyword(png_ptr, name,
&new_name)) == 0)
{
@@ -1344,6 +1353,12 @@ png_write_zTXt(png_structp png_ptr, png_charp key, png_charp text,
png_debug(1, "in png_write_zTXt\n");
comp.num_output_ptr = 0;
comp.max_output_ptr = 0;
comp.output_ptr = NULL;
comp.input = NULL;
comp.input_len = 0;
if (key == NULL || (key_len = png_check_keyword(png_ptr, key, &new_key))==0)
{
png_warning(png_ptr, "Empty keyword in zTXt chunk");
@@ -1397,6 +1412,11 @@ png_write_iTXt(png_structp png_ptr, int compression, png_charp key,
png_debug(1, "in png_write_iTXt\n");
comp.num_output_ptr = 0;
comp.max_output_ptr = 0;
comp.output_ptr = NULL;
comp.input = NULL;
if (key == NULL || (key_len = png_check_keyword(png_ptr, key, &new_key))==0)
{
png_warning(png_ptr, "Empty keyword in iTXt chunk");
@@ -1559,7 +1579,7 @@ png_write_sCAL(png_structp png_ptr, int unit, double width,double height)
#endif
png_size_t total_len;
char wbuf[32], hbuf[32];
png_byte bunit = unit;
png_byte bunit = (png_byte)unit;
png_debug(1, "in png_write_sCAL\n");