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[libpng15] Added png_get_compression_buffer() API.
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Glenn Randers-Pehrson
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1
ANNOUNCE
1
ANNOUNCE
@ -72,6 +72,7 @@ Version 1.5.6beta05 [October 12, 2011]
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Version 1.5.6beta06 [October 13, 2011]
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Removed two redundant tests for unitialized row.
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Added png_get_compression_buffer() API.
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Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
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(subscription required; visit
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1
CHANGES
1
CHANGES
@ -3633,6 +3633,7 @@ Version 1.5.6beta05 [October 12, 2011]
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Version 1.5.6beta06 [October 13, 2011]
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Removed two redundant tests for unitialized row.
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Added png_get_compression_buffer() API.
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Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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(subscription required; visit
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@ -1,6 +1,6 @@
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libpng-manual.txt - A description on how to use and modify libpng
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libpng version 1.5.6beta06 - October 12, 2011
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libpng version 1.5.6beta06 - October 13, 2011
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Updated and distributed by Glenn Randers-Pehrson
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<glennrp at users.sourceforge.net>
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Copyright (c) 1998-2011 Glenn Randers-Pehrson
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@ -11,7 +11,7 @@ libpng-manual.txt - A description on how to use and modify libpng
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Based on:
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libpng versions 0.97, January 1998, through 1.5.6beta06 - October 12, 2011
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libpng versions 0.97, January 1998, through 1.5.6beta06 - October 13, 2011
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Updated and distributed by Glenn Randers-Pehrson
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Copyright (c) 1998-2011 Glenn Randers-Pehrson
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@ -3692,6 +3692,13 @@ compressed chunks such as zTXt, iTXt, and iCCP:
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png_set_text_compression_method(png_ptr, method);
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#endif
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As of libpng version 1.5.6, an API became available for
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retrieving a pointer to the compression buffer:
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#if PNG_GET_COMPRESSION_BUFFER_SUPPORTED
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png_bytep buffer = png_get_compression_buffer(png_ptr);
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#endif
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Controlling row filtering
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If you want to control whether libpng uses filtering or not, which
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@ -4563,7 +4570,7 @@ Other rules can be inferred by inspecting the libpng source.
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XIV. Y2K Compliance in libpng
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October 12, 2011
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October 13, 2011
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Since the PNG Development group is an ad-hoc body, we can't make
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an official declaration.
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25
libpng.3
25
libpng.3
@ -1,4 +1,4 @@
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.TH LIBPNG 3 "October 12, 2011"
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.TH LIBPNG 3 "October 13, 2011"
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.SH NAME
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libpng \- Portable Network Graphics (PNG) Reference Library 1.5.6beta06
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.SH SYNOPSIS
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@ -154,6 +154,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.5.6beta06
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\fI\fB
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\fBpng_bytep png_get_compression_buffer (png_const_structp \fIpng_ptr\fP\fB);\fP
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\fI\fB
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\fBpng_uint_32 png_get_compression_buffer_size (png_const_structp \fIpng_ptr\fP\fB);\fP
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\fI\fB
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@ -977,7 +981,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
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.SH LIBPNG.TXT
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libpng-manual.txt - A description on how to use and modify libpng
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libpng version 1.5.6beta06 - October 12, 2011
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libpng version 1.5.6beta06 - October 13, 2011
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Updated and distributed by Glenn Randers-Pehrson
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<glennrp at users.sourceforge.net>
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Copyright (c) 1998-2011 Glenn Randers-Pehrson
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@ -988,7 +992,7 @@ libpng-manual.txt - A description on how to use and modify libpng
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Based on:
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libpng versions 0.97, January 1998, through 1.5.6beta06 - October 12, 2011
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libpng versions 0.97, January 1998, through 1.5.6beta06 - October 13, 2011
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Updated and distributed by Glenn Randers-Pehrson
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Copyright (c) 1998-2011 Glenn Randers-Pehrson
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@ -4670,6 +4674,13 @@ compressed chunks such as zTXt, iTXt, and iCCP:
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png_set_text_compression_method(png_ptr, method);
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#endif
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As of libpng version 1.5.6, an API became available for
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retrieving a pointer to the compression buffer:
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#if PNG_GET_COMPRESSION_BUFFER_SUPPORTED
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png_bytep buffer = png_get_compression_buffer(png_ptr);
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#endif
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.SS Controlling row filtering
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If you want to control whether libpng uses filtering or not, which
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@ -5541,7 +5552,7 @@ Other rules can be inferred by inspecting the libpng source.
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.SH XIV. Y2K Compliance in libpng
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October 12, 2011
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October 13, 2011
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Since the PNG Development group is an ad-hoc body, we can't make
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an official declaration.
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@ -5803,7 +5814,7 @@ possible without all of you.
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Thanks to Frank J. T. Wojcik for helping with the documentation.
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Libpng version 1.5.6beta06 - October 12, 2011:
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Libpng version 1.5.6beta06 - October 13, 2011:
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Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
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Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
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@ -5826,7 +5837,7 @@ this sentence.
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This code is released under the libpng license.
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libpng versions 1.2.6, August 15, 2004, through 1.5.6beta06, October 12, 2011, are
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libpng versions 1.2.6, August 15, 2004, through 1.5.6beta06, October 13, 2011, are
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Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
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distributed according to the same disclaimer and license as libpng-1.2.5
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with the following individual added to the list of Contributing Authors
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@ -5925,7 +5936,7 @@ certification mark of the Open Source Initiative.
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Glenn Randers-Pehrson
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glennrp at users.sourceforge.net
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October 12, 2011
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October 13, 2011
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.\" end of man page
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18
png.h
18
png.h
@ -1,7 +1,7 @@
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/* png.h - header file for PNG reference library
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*
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* libpng version 1.5.6beta06 - October 12, 2011
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* libpng version 1.5.6beta06 - October 13, 2011
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* Copyright (c) 1998-2011 Glenn Randers-Pehrson
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
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@ -11,7 +11,7 @@
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* Authors and maintainers:
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* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
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* libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
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* libpng versions 0.97, January 1998, through 1.5.6beta06 - October 12, 2011: Glenn
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* libpng versions 0.97, January 1998, through 1.5.6beta06 - October 13, 2011: Glenn
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* See also "Contributing Authors", below.
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*
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* Note about libpng version numbers:
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@ -192,7 +192,7 @@
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*
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* This code is released under the libpng license.
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*
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* libpng versions 1.2.6, August 15, 2004, through 1.5.6beta06, October 12, 2011, are
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* libpng versions 1.2.6, August 15, 2004, through 1.5.6beta06, October 13, 2011, are
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* Copyright (c) 2004, 2006-2011 Glenn Randers-Pehrson, and are
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* distributed according to the same disclaimer and license as libpng-1.2.5
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* with the following individual added to the list of Contributing Authors:
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@ -304,7 +304,7 @@
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* Y2K compliance in libpng:
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* =========================
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*
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* October 12, 2011
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* October 13, 2011
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*
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* Since the PNG Development group is an ad-hoc body, we can't make
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* an official declaration.
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@ -367,7 +367,7 @@
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/* Version information for png.h - this should match the version in png.c */
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#define PNG_LIBPNG_VER_STRING "1.5.6beta06"
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#define PNG_HEADER_VERSION_STRING \
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" libpng version 1.5.6beta06 - October 12, 2011\n"
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" libpng version 1.5.6beta06 - October 13, 2011\n"
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#define PNG_LIBPNG_VER_SONUM 15
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#define PNG_LIBPNG_VER_DLLNUM 15
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@ -995,6 +995,12 @@ PNG_EXPORT(6, png_size_t, png_get_compression_buffer_size,
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PNG_EXPORT(7, void, png_set_compression_buffer_size, (png_structp png_ptr,
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png_size_t size));
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#ifdef PNG_GET_COMPRESSION_BUFFER_SUPPORTED
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/* New in libpng-1.5.6 */
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PNG_EXPORT(234, png_bytep, png_get_compression_buffer, (png_const_structp
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png_ptr));
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#endif
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/* Moved from pngconf.h in 1.4.0 and modified to ensure setjmp/longjmp
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* match up.
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*/
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@ -2617,7 +2623,7 @@ PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i));
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* scripts/symbols.def as well.
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*/
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#ifdef PNG_EXPORT_LAST_ORDINAL
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PNG_EXPORT_LAST_ORDINAL(233);
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PNG_EXPORT_LAST_ORDINAL(234);
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#endif
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#ifdef __cplusplus
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9
pngget.c
9
pngget.c
@ -1068,6 +1068,15 @@ png_get_compression_buffer_size(png_const_structp png_ptr)
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return (png_ptr ? png_ptr->zbuf_size : 0);
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}
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#ifdef PNG_GET_COMPRESSION_BUFFER_SUPPORTED
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/* New in libpng-1.5.6 */
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png_bytep PNGAPI
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png_get_compression_buffer(png_const_structp png_ptr)
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{
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return (png_ptr ? png_ptr->zbuf : 0);
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}
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#endif
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#ifdef PNG_SET_USER_LIMITS_SUPPORTED
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/* These functions were added to libpng 1.2.6 and were enabled
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@ -557,6 +557,9 @@ option SAVE_INT_32 requires WRITE
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option WRITE_OPTIMIZE_CMF requires WRITE
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# Added at libpng-1.5.6
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option GET_COMPRESSION_BUFFER
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option READ_COMPRESSED_TEXT disabled
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option READ_iCCP enables READ_COMPRESSED_TEXT
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option READ_iTXt enables READ_COMPRESSED_TEXT
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@ -55,6 +55,7 @@
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#define PNG_FLOATING_ARITHMETIC_SUPPORTED
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#define PNG_FLOATING_POINT_SUPPORTED
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#define PNG_gAMA_SUPPORTED
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#define PNG_GET_COMPRESSION_BUFFER_SUPPORTED
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#define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
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#define PNG_hIST_SUPPORTED
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#define PNG_iCCP_SUPPORTED
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@ -239,3 +239,4 @@ EXPORTS
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png_get_cHRM_XYZ_fixed @231
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png_set_cHRM_XYZ @232
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png_set_cHRM_XYZ_fixed @233
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png_get_compression_buffer @234
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