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[master] Reverted iTXt compatibility stuff 

from 1.2.41beta05, 1.2.41beta11, and 1.2.41beta12.
This commit is contained in:
Glenn Randers-Pehrson 2009-11-08 16:51:11 -06:00
parent 87480bf6d4
commit f748fda0ed
16 changed files with 35 additions and 434 deletions
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10
libpng-1.2.41beta14.txt
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@ -1,6 +1,6 @@
libpng.txt - A description on how to use and modify libpng
libpng version 1.2.41beta14 - November 3, 2009
libpng version 1.2.41beta14 - November 8, 2009
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@ -11,7 +11,7 @@ libpng.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.2.41beta14 - November 3, 2009
libpng versions 0.97, January 1998, through 1.2.41beta14 - November 8, 2009
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@ -3028,13 +3028,13 @@ They have been replaced, respectively, by:
PNG_MAX_UINT was replaced with PNG_UINT_31_MAX. It has been
deprecated since libpng-1.0.16 and libpng-1.2.6.
The function
The deprecated function
png_check_sig(sig, num)
was replaced with
!png_sig_cmp(sig, 0, num)
It has been deprecated since libpng-0.90.
The function
The deprecated function
png_set_gray_1_2_4_to_8()
which also expands tRNS to alpha was replaced with
png_set_expand_gray_1_2_4_to_8()
@ -3209,7 +3209,7 @@ source.
XIII. Y2K Compliance in libpng
November 3, 2009
November 8, 2009
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.

18
libpng.3
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@ -1,4 +1,4 @@
.TH LIBPNG 3 "November 3, 2009"
.TH LIBPNG 3 "November 8, 2009"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.41beta14
.SH SYNOPSIS
@ -821,7 +821,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
.SH LIBPNG.TXT
libpng.txt - A description on how to use and modify libpng
libpng version 1.2.41beta14 - November 3, 2009
libpng version 1.2.41beta14 - November 8, 2009
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@ -832,7 +832,7 @@ libpng.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.2.41beta14 - November 3, 2009
libpng versions 0.97, January 1998, through 1.2.41beta14 - November 8, 2009
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2009 Glenn Randers-Pehrson
@ -3849,13 +3849,13 @@ They have been replaced, respectively, by:
PNG_MAX_UINT was replaced with PNG_UINT_31_MAX. It has been
deprecated since libpng-1.0.16 and libpng-1.2.6.
The function
The deprecated function
png_check_sig(sig, num)
was replaced with
!png_sig_cmp(sig, 0, num)
It has been deprecated since libpng-0.90.
The function
The deprecated function
png_set_gray_1_2_4_to_8()
which also expands tRNS to alpha was replaced with
png_set_expand_gray_1_2_4_to_8()
@ -4030,7 +4030,7 @@ source.
.SH XIII. Y2K Compliance in libpng
November 3, 2009
November 8, 2009
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
@ -4376,7 +4376,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.2.41beta14 - November 3, 2009:
Libpng version 1.2.41beta14 - November 8, 2009:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@ -4399,7 +4399,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.2.6, August 15, 2004, through 1.2.41beta14, November 3, 2009, are
libpng versions 1.2.6, August 15, 2004, through 1.2.41beta14, November 8, 2009, are
Copyright (c) 2004,2006-2008 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
@ -4498,7 +4498,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
November 3, 2009
November 8, 2009
.\" end of man page

6
png.c
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@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)
@ -722,13 +722,13 @@ png_get_copyright(png_structp png_ptr)
#else
#ifdef __STDC__
return ((png_charp) PNG_STRING_NEWLINE \
"libpng version 1.2.41beta14 - November 3, 2009" PNG_STRING_NEWLINE \
"libpng version 1.2.41beta14 - November 8, 2009" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2009 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE);
#else
return ((png_charp) "libpng version 1.2.41beta14 - November 3, 2009\
return ((png_charp) "libpng version 1.2.41beta14 - November 8, 2009\
Copyright (c) 1998-2009 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");

6
pngerror.c
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@ -1,7 +1,7 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)
@ -285,9 +285,9 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
longjmp(png_ptr->jmpbuf, 1);
# endif
}
#else
PNG_ABORT();
#endif
/* Here if not setjmp support or if png_ptr is null. */
PNG_ABORT();
#ifndef PNG_CONSOLE_IO_SUPPORTED
error_message = error_message; /* Make compiler happy */
#endif

23
pngget.c
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@ -1,7 +1,7 @@
/* pngget.c - retrieval of values from info struct
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)
@ -939,27 +939,6 @@ png_get_user_height_max (png_structp png_ptr)
{
return (png_ptr? png_ptr->user_height_max : 0);
}
/* This function was added to libpng 1.2.41 */
png_uint_32 PNGAPI
png_get_chunk_cache_max (png_structp png_ptr)
{
return (png_ptr? png_ptr->user_chunk_cache_max? 0x7fffffffL :
png_ptr->user_chunk_cache_max - 1 : 0);
}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
#ifdef PNG_IO_STATE_SUPPORTED
png_uint_32 PNGAPI
png_get_io_state (png_structp png_ptr)
{
return png_ptr->io_state;
}
png_bytep PNGAPI
png_get_io_chunk_name (png_structp png_ptr)
{
return png_ptr->chunk_name;
}
#endif /* ?PNG_IO_STATE_SUPPORTED */
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */

39
pngread.c
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@ -1,7 +1,7 @@
/* pngread.c - read a PNG file
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)
@ -66,8 +66,6 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
/* Added at libpng-1.2.41 */
png_ptr->user_chunk_cache_max = PNG_USER_CHUNK_CACHE_MAX;
#endif
#ifdef PNG_SETJMP_SUPPORTED
@ -118,10 +116,6 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
* For versions after libpng 1.0, we will be compatible, so we need
* only check the first digit.
*/
#ifdef PNG_iTXt_SUPPORTED
png_size_t length;
#endif
if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
(user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
(user_png_ver[0] == '0' && user_png_ver[2] < '9'))
@ -146,26 +140,6 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
png_error(png_ptr,
"Incompatible libpng version in application and library");
}
#ifdef PNG_iTXt_SUPPORTED
/* Any library mismatch is trouble for png_set_read() in
* libpng-1.2.41 and later 1.2.x, so we store the caller's
* library version string.
*/
length = (png_size_t)png_strlen(user_png_ver) + 1;
png_debug1(3, "allocating user_png_ver for png_ptr (%lu bytes)",
(unsigned long)length);
png_ptr->user_png_ver = (png_charp)png_malloc_warn(png_ptr,
(png_uint_32)length);
if (png_ptr->user_png_ver == NULL)
png_warning(png_ptr, "Could not store png_ptr->user_png_ver");
else
png_memcpy(png_ptr->user_png_ver, user_png_ver, length);
#endif /* PNG_iTXt_SUPPORTED */
}
/* Initialize zbuf - compression buffer */
@ -327,8 +301,6 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
/* Added at libpng-1.2.41 */
png_ptr->user_chunk_cache_max = PNG_USER_CHUNK_CACHE_MAX;
#endif
/* Initialize zbuf - compression buffer */
@ -377,10 +349,6 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
png_size_t num_checked = png_ptr->sig_bytes,
num_to_check = 8 - num_checked;
#ifdef PNG_IO_STATE_SUPPORTED
png_ptr->io_state = PNG_IO_READING | PNG_IO_SIGNATURE;
#endif
png_read_data(png_ptr, &(info_ptr->signature[num_checked]), num_to_check);
png_ptr->sig_bytes = 8;
@ -1325,11 +1293,6 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
#endif /* PNG_TEXT_SUPPORTED */
#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
/* New member added in libpng-1.2.41, will be removed from 1.4.0 */
#ifdef PNG_iTXt_SUPPORTED
png_free(png_ptr, png_ptr->user_png_ver);
#endif
/* Save the important info out of the png_struct, in case it is
* being used again.
*/

2
pngrio.c
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@ -1,7 +1,7 @@
/* pngrio.c - functions for data input
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)

108
pngrtran.c
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@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)
@ -140,22 +140,6 @@ png_set_strip_alpha(png_structp png_ptr)
}
#endif
#ifdef PNG_READ_PREMULTIPLY_ALPHA_SUPPORTED
void PNGAPI
png_set_premultiply_alpha(png_structp png_ptr)
{
png_debug(1, "in png_set_premultiply_alpha");
if(png_ptr == NULL)
return;
png_ptr->transformations |=
(PNG_PREMULTIPLY_ALPHA | PNG_EXPAND_tRNS);
png_ptr->transformations |=
PNG_EXPAND; /* This shouldn't be necessary */
png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
}
#endif
#ifdef PNG_READ_DITHER_SUPPORTED
/* Dither file to 8 bit. Supply a palette, the current number
* of elements in the palette, the maximum number of elements
@ -607,8 +591,9 @@ png_set_expand(png_structp png_ptr)
* More to the point, these functions make it obvious what libpng will be
* doing, whereas "expand" can (and does) mean any number of things.
*
* GRP 20060307: In libpng-1.4.0, png_set_gray_1_2_4_to_8() was modified
* to expand only the sample depth but not to expand the tRNS to alpha.
* GRP 20060307: In libpng-1.2.9, png_set_gray_1_2_4_to_8() was modified
* to expand only the sample depth but not to expand the tRNS to alpha
* and its name was changed to png_set_expand_gray_1_2_4_to_8().
*/
/* Expand paletted images to RGB. */
@ -1534,12 +1519,6 @@ png_do_read_transformations(png_structp png_ptr)
(png_uint_32)png_ptr->filler, png_ptr->flags);
#endif
#ifdef PNG_READ_PREMULTIPLY_ALPHA_SUPPORTED
if (png_ptr->transformations & PNG_PREMULTIPLY_ALPHA)
png_do_read_premultiply_alpha(&(png_ptr->row_info),
png_ptr->row_buf + 1);
#endif
#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
if (png_ptr->transformations & PNG_INVERT_ALPHA)
png_do_read_invert_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
@ -2043,85 +2022,6 @@ png_do_read_invert_alpha(png_row_infop row_info, png_bytep row)
}
#endif
#ifdef PNG_READ_PREMULTIPLY_ALPHA_SUPPORTED
void /* PRIVATE */
png_do_read_premultiply_alpha(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_read_premultiply_alpha");
{
png_uint_32 row_width = row_info->width;
if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
/* This premultiplies the pixels with the alpha channel in RGBA */
if (row_info->bit_depth == 8)
{
png_bytep sp = row + row_info->rowbytes;
png_bytep dp = sp;
png_uint_16 a = 0;
png_uint_32 i;
for (i = 0; i < row_width; i++)
{
a = *(--sp); --dp;
*(--dp) = (*(--sp) * a) / 255;
*(--dp) = (*(--sp) * a) / 255;
*(--dp) = (*(--sp) * a) / 255;
}
}
/* This premultiplies the pixels with the alpha channel in RRGGBBAA */
else
{
png_uint_16p sp = (png_uint_16p)(row + row_info->rowbytes);
png_uint_16p dp = sp;
png_uint_32 a = 0;
png_uint_32 i;
for (i = 0; i < row_width; i++)
{
a = *(--sp); --dp;
*(--dp) = (png_uint_16) ((*(--sp) * a) / 65535);
*(--dp) = (png_uint_16) ((*(--sp) * a) / 65535);
*(--dp) = (png_uint_16) ((*(--sp) * a) / 65535);
}
}
}
else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
{
/* This premultiplies the pixels with the alpha channel in GA */
if (row_info->bit_depth == 8)
{
png_bytep sp = row + row_info->rowbytes;
png_bytep dp = sp;
png_uint_16 a = 0;
png_uint_32 i;
for (i = 0; i < row_width; i++)
{
a = *(--sp); --dp;
*(--dp) = (*(--sp) * a) / 255;
}
}
/* This premultiplies the pixels with the alpha channel in GGAA */
else
{
png_uint_16p sp = (png_uint_16p) (row + row_info->rowbytes);
png_uint_16p dp = sp;
png_uint_32 a = 0;
png_uint_32 i;
for (i = 0; i < row_width; i++)
{
a = *(--sp); --dp;
*(--dp) = (png_uint_16) ((*(--sp) * a) / 65535);
}
}
}
}
}
#endif
#ifdef PNG_READ_FILLER_SUPPORTED
/* Add filler channel if we have RGB color */
void /* PRIVATE */

122
pngrutil.c
View File

@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)
@ -112,13 +112,6 @@ png_read_chunk_header(png_structp png_ptr)
png_byte buf[8];
png_uint_32 length;
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that the chunk header is being read.
* PNG_IO_CHUNK_HDR requires a single I/O call.
*/
png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_HDR;
#endif
/* Read the length and the chunk name */
png_read_data(png_ptr, buf, 8);
length = png_get_uint_31(png_ptr, buf);
@ -136,13 +129,6 @@ png_read_chunk_header(png_structp png_ptr)
/* Check to see if chunk name is valid */
png_check_chunk_name(png_ptr, png_ptr->chunk_name);
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that chunk data will (possibly) be read.
* PNG_IO_CHUNK_DATA does NOT require a specific number of I/O calls.
*/
png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_DATA;
#endif
return length;
}
@ -217,12 +203,6 @@ png_crc_error(png_structp png_ptr)
need_crc = 0;
}
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that the chunk CRC is being read */
/* PNG_IO_CHUNK_CRC requires the I/O to be done at once */
png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_CRC;
#endif
png_read_data(png_ptr, crc_bytes, 4);
if (need_crc)
@ -322,23 +302,9 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
png_charp tmp;
tmp = text;
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if ((png_ptr->user_chunk_cache_max != 0) &&
(--png_ptr->user_chunk_cache_max == 0))
{
png_warning(png_ptr, "No space in chunk cache");
text = NULL;
}
else
{
#endif
text = (png_charp)png_malloc_warn(png_ptr,
(png_uint_32)(text_size +
png_ptr->zbuf_size - png_ptr->zstream.avail_out + 1));
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
}
#endif
if (text == NULL)
{
png_free(png_ptr, tmp);
@ -1170,24 +1136,6 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_sPLT");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
{
png_crc_finish(png_ptr, length);
return;
}
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for sPLT");
png_crc_finish(png_ptr, length);
return;
}
}
#endif
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before sPLT");
else if (png_ptr->mode & PNG_HAVE_IDAT)
@ -1974,23 +1922,6 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_tEXt");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
{
png_crc_finish(png_ptr, length);
return;
}
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for tEXt");
png_crc_finish(png_ptr, length);
return;
}
}
#endif
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before tEXt");
@ -2076,23 +2007,6 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_zTXt");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
{
png_crc_finish(png_ptr, length);
return;
}
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for zTXt");
png_crc_finish(png_ptr, length);
return;
}
}
#endif
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before zTXt");
@ -2197,23 +2111,6 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_iTXt");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
{
png_crc_finish(png_ptr, length);
return;
}
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for iTXt");
png_crc_finish(png_ptr, length);
return;
}
}
#endif
if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before iTXt");
@ -2341,23 +2238,6 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_debug(1, "in png_handle_unknown");
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_cache_max != 0)
{
if (png_ptr->user_chunk_cache_max == 1)
{
png_crc_finish(png_ptr, length);
return;
}
if (--png_ptr->user_chunk_cache_max == 1)
{
png_warning(png_ptr, "No space in chunk cache for unknown chunk");
png_crc_finish(png_ptr, length);
return;
}
}
#endif
if (png_ptr->mode & PNG_HAVE_IDAT)
{
#ifdef PNG_USE_LOCAL_ARRAYS

68
pngset.c
View File

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)
@ -653,9 +653,6 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
int num_text)
{
int i;
#ifdef PNG_iTXt_SUPPORTED
int caller_no_itxt = 0;
#endif
png_debug1(1, "in %s storage function", ((png_ptr == NULL ||
png_ptr->chunk_name[0] == '\0') ?
@ -664,45 +661,6 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
if (png_ptr == NULL || info_ptr == NULL || num_text == 0)
return(0);
#ifdef PNG_iTXt_SUPPORTED
/* If an earlier version of the library was used to build the
* application, it might be using a png_textp structure that
* does not contain the lang or lang_key elements. Even if you build
* this library with PNG_iTXt_SUPPORTED explicitly defined,
* and your older library was also built with PNG_iTXt_SUPPORTED
* defined, the complete png_textp structure probably has not existed
* all along and it's not safe to access them, due to a bug in
* pngconf.h from version 1.2.9 to 1.2.40.
*/
if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
{
int j;
png_byte c[12];
j = 0;
for (j = 0; j < 12; j++)
c[j] = 0;
for (j = 0; c[j] && j < 12; j++)
c[j] = png_ptr->user_png_ver[j];
if ((c[5] == '\0') /* 1.2.N */ ||
(c[5] == 'b') /* 1.2.NbetaNN */ ||
(c[5] == 'r') /* 1.2.NrcNN */ ||
(c[4] == '1') /* 1.2.1x */ ||
(c[4] == '2') /* 1.2.2x */ ||
(c[4] == '3') /* 1.2.3x */ ||
((c[4] == '4') /* 1.2.4x */ &&
(((c[5] == '0')) /* 1.2.40 */ ||
((c[5] == '1') /* 1.2.41x */ &&
(((c[6] == 'b') /* 1.2.41betax */ &&
((c[10] == '0'))) /* 1.2.41beta0x */ ||
((c[10] == '1') /* 1.2.41beta1x */ &&
(c[11] == '0'))))))) /* 1.2.41beta10 */
caller_no_itxt = 1;
}
#endif /* PNG_iTXt_SUPPORTED */
/* Make sure we have enough space in the "text" array in info_struct
* to hold all of the incoming text_ptr objects.
*/
@ -764,8 +722,6 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
{
/* Set iTXt data */
if (caller_no_itxt == 0)
{
if (text_ptr[i].lang != NULL)
lang_len = png_strlen(text_ptr[i].lang);
else
@ -774,15 +730,6 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
lang_key_len = png_strlen(text_ptr[i].lang_key);
else
lang_key_len = 0;
}
else /* Caller does not support iTXt */
{
lang_len = 0;
lang_key_len = 0;
png_warning(png_ptr,
"iTXt lang and lang_key not available from application");
}
}
#else /* PNG_iTXt_SUPPORTED */
{
@ -1262,19 +1209,6 @@ png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max,
png_ptr->user_width_max = user_width_max;
png_ptr->user_height_max = user_height_max;
}
/* This function was added to libpng 1.2.41 */
void PNGAPI
png_set_chunk_cache_max (png_structp png_ptr,
png_uint_32 user_chunk_cache_max)
{
if (png_ptr == NULL)
return;
png_ptr->user_chunk_cache_max = user_chunk_cache_max;
if (user_chunk_cache_max == 0x7fffffffL) /* Unlimited */
png_ptr->user_chunk_cache_max = 0;
else
png_ptr->user_chunk_cache_max = user_chunk_cache_max + 1;
}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */

2
pngtest.c
View File

@ -1,7 +1,7 @@
/* pngtest.c - a simple test program to test libpng
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)

2
pngtrans.c
View File

@ -1,7 +1,7 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)

2
pngwio.c
View File

@ -1,7 +1,7 @@
/* pngwio.c - functions for data output
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)

32
pngwrite.c
View File

@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)
@ -534,10 +534,6 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
{
#ifdef PNG_iTXt_SUPPORTED
png_size_t length;
#endif
/* Libpng 0.90 and later are binary incompatible with libpng 0.89, so
* we must recompile any applications that use any older library version.
* For versions after libpng 1.0, we will be compatible, so we need
@ -567,27 +563,6 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
png_error(png_ptr,
"Incompatible libpng version in application and library");
}
#ifdef PNG_iTXt_SUPPORTED
/* Any library mismatch is trouble for png_set_read() in
* libpng-1.2.41 and later 1.2.x, so we store the caller's
* library version string.
*/
length = (png_size_t)png_strlen(user_png_ver) + 1;
png_debug1(3, "allocating user_png_ver for png_ptr (%lu bytes)",
(unsigned long)length);
png_ptr->user_png_ver = (png_charp)png_malloc_warn(png_ptr,
(png_uint_32)length);
if (png_ptr->user_png_ver == NULL)
png_warning(png_ptr, "Could not store png_ptr->user_png_ver");
else
png_memcpy(png_ptr->user_png_ver, user_png_ver, length);
#endif /* PNG_iTXt_SUPPORTED */
}
/* Initialize zbuf - compression buffer */
@ -1177,11 +1152,6 @@ png_write_destroy(png_structp png_ptr)
free_fn = png_ptr->free_fn;
#endif
/* New member added in libpng-1.2.41, will be removed from 1.4.0 */
#ifdef PNG_iTXt_SUPPORTED
png_free(png_ptr, png_ptr->user_png_ver);
#endif
png_memset(png_ptr, 0, png_sizeof(png_struct));
png_ptr->error_fn = error_fn;

2
pngwtran.c
View File

@ -1,7 +1,7 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)

27
pngwutil.c
View File

@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
* Last changed in libpng 1.2.41 [November 3, 2009]
* Last changed in libpng 1.2.41 [November 8, 2009]
* Copyright (c) 1998-2009 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.)
@ -63,11 +63,6 @@ png_write_sig(png_structp png_ptr)
{
png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that the signature is being written */
png_ptr->io_state = PNG_IO_WRITING | PNG_IO_SIGNATURE;
#endif
/* Write the rest of the 8 byte signature */
png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes],
(png_size_t)(8 - png_ptr->sig_bytes));
@ -111,12 +106,6 @@ png_write_chunk_start(png_structp png_ptr, png_bytep chunk_name,
if (png_ptr == NULL)
return;
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that the chunk header is being written.
* PNG_IO_CHUNK_HDR requires a single I/O call.
*/
png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_HDR;
#endif
/* Write the length and the chunk name */
png_save_uint_32(buf, length);
@ -127,13 +116,6 @@ png_write_chunk_start(png_structp png_ptr, png_bytep chunk_name,
/* Reset the crc and run it over the chunk name */
png_reset_crc(png_ptr);
png_calculate_crc(png_ptr, chunk_name, (png_size_t)4);
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that chunk data will (possibly) be written.
* PNG_IO_CHUNK_DATA does NOT require a specific number of I/O calls.
*/
png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_DATA;
#endif
}
/* Write the data of a PNG chunk started with png_write_chunk_start().
@ -165,13 +147,6 @@ png_write_chunk_end(png_structp png_ptr)
if (png_ptr == NULL) return;
#ifdef PNG_IO_STATE_SUPPORTED
/* Inform the I/O callback that the chunk CRC is being written.
* PNG_IO_CHUNK_CRC requires a single I/O function call.
*/
png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_CRC;
#endif
/* Write the crc in a single operation */
png_save_uint_32(buf, png_ptr->crc);