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Imported from libpng-1.2.2beta2.tar

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This commit is contained in:
Glenn Randers-Pehrson
2002-02-23 18:55:25 -06:00
parent 9c0f094b21
commit c6de22da1d
56 changed files with 530 additions and 337 deletions
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17
pngread.c
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@@ -1,9 +1,9 @@
/* pngread.c - read a PNG file
*
* libpng 1.2.2beta1 - February 22, 2002
* libpng 1.2.2beta2 - February 24, 2002
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* Copyright (c) 1998-2002 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.)
*
@@ -374,6 +374,9 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
png_debug2(0, "Reading %s chunk, length=%lu.\n", png_ptr->chunk_name,
length);
if (length > PNG_MAX_UINT)
png_error(png_ptr, "Invalid chunk length.");
/* This should be a binary subdivision search or a hash for
* matching the chunk name rather than a linear search.
*/
@@ -657,6 +660,9 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
png_read_data(png_ptr, chunk_length, 4);
png_ptr->idat_size = png_get_uint_32(chunk_length);
if (png_ptr->idat_size > PNG_MAX_UINT)
png_error(png_ptr, "Invalid chunk length.");
png_reset_crc(png_ptr);
png_crc_read(png_ptr, png_ptr->chunk_name, 4);
if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
@@ -768,7 +774,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
* not called png_set_interlace_handling(), the display_row buffer will
* be ignored, so pass NULL to it.
*
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.2beta1
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.2beta2
*/
void PNGAPI
@@ -817,7 +823,7 @@ png_read_rows(png_structp png_ptr, png_bytepp row,
* only call this function once. If you desire to have an image for
* each pass of a interlaced image, use png_read_rows() instead.
*
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.2beta1
* [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.2beta2
*/
void PNGAPI
png_read_image(png_structp png_ptr, png_bytepp image)
@@ -935,6 +941,9 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
png_debug1(0, "Reading %s chunk.\n", png_ptr->chunk_name);
if (length > PNG_MAX_UINT)
png_error(png_ptr, "Invalid chunk length.");
if (!png_memcmp(png_ptr->chunk_name, png_IHDR, 4))
png_handle_IHDR(png_ptr, info_ptr, length);
else if (!png_memcmp(png_ptr->chunk_name, png_IEND, 4))