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[libpng10] Imported from libpng-1.0.32.tar

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This commit is contained in:
Glenn Randers-Pehrson
2008-04-02 12:26:15 -05:00
parent 80d4e25c9d
commit 4f66bef47f
58 changed files with 466 additions and 304 deletions
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23
pngwutil.c
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@@ -1,9 +1,9 @@
/* pngwutil.c - utilities to write a PNG file
*
* Last changed in libpng 1.2.20 Septhember 3, 2007
* Last changed in libpng 1.2.26 [April 2, 2008]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2007 Glenn Randers-Pehrson
* Copyright (c) 1998-2008 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.)
*/
@@ -380,6 +380,8 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
#ifdef PNG_USE_LOCAL_ARRAYS
PNG_IHDR;
#endif
int ret;
png_byte buf[13]; /* buffer to store the IHDR info */
png_debug(1, "in png_write_IHDR\n");
@@ -523,10 +525,19 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
png_ptr->zlib_window_bits = 15;
if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_METHOD))
png_ptr->zlib_method = 8;
if (deflateInit2(&png_ptr->zstream, png_ptr->zlib_level,
png_ptr->zlib_method, png_ptr->zlib_window_bits,
png_ptr->zlib_mem_level, png_ptr->zlib_strategy) != Z_OK)
png_error(png_ptr, "zlib failed to initialize compressor");
ret = deflateInit2(&png_ptr->zstream, png_ptr->zlib_level,
png_ptr->zlib_method, png_ptr->zlib_window_bits,
png_ptr->zlib_mem_level, png_ptr->zlib_strategy);
if (ret != Z_OK)
{
if (ret == Z_VERSION_ERROR) png_error(png_ptr,
"zlib failed to initialize compressor -- version error");
if (ret == Z_STREAM_ERROR) png_error(png_ptr,
"zlib failed to initialize compressor -- stream error");
if (ret == Z_MEM_ERROR) png_error(png_ptr,
"zlib failed to initialize compressor -- mem error");
png_error(png_ptr, "zlib failed to initialize compressor");
}
png_ptr->zstream.next_out = png_ptr->zbuf;
png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
/* libpng is not interested in zstream.data_type */