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[devel] Update png_compress_chunk() rewrite.

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This commit is contained in:
Glenn Randers-Pehrson 2010-02-12 21:20:37 -06:00
parent ee4eb9a910
commit 288ea702f2
3 changed files with 48 additions and 72 deletions
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86
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.4.1beta11 - February 12, 2010 Libpng 1.5.0beta05 - February 13, 2010
This is not intended to be a public release. It will be replaced This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version. within a few weeks by a public version or by another test version.
@ -9,79 +9,45 @@ Files available for download:
Source files with LF line endings (for Unix/Linux) and with a Source files with LF line endings (for Unix/Linux) and with a
"configure" script "configure" script
1.4.1beta11.tar.xz (LZMA-compressed, recommended) 1.5.0beta05.tar.xz (LZMA-compressed, recommended)
1.4.1beta11.tar.gz 1.5.0beta05.tar.gz
1.4.1beta11.tar.bz2 1.5.0beta05.tar.bz2
Source files with CRLF line endings (for Windows), without the Source files with CRLF line endings (for Windows), without the
"configure" script "configure" script
lp141b11.zip lp150b05.zip
lp141b11.7z lp150b05.7z
Other information: Other information:
1.4.1beta11-README.txt 1.5.0beta05-README.txt
1.4.1beta11-LICENSE.txt 1.5.0beta05-LICENSE.txt
Changes since the last public release (1.4.0): Changes since the last public release (1.4.1):
version 1.4.1beta01 [January 10, 2010] version 1.5.0beta01 [February 7, 2010]
Updated CMakeLists.txt for consistent indentation and to avoid an Moved declaration of png_struct into private pngstruct.h and png_info
unclosed if-statement warning (Philip Lowman). into pnginfo.h
Revised Makefile.am and Makefile.in to remove references to Y2KINFO,
KNOWNBUG, and libpng.la (Robert Schwebel).
Revised the makefiles to install the same files and symbolic
links as configure, except for libpng.la and libpng14.la.
Make png_set|get_compression_buffer_size() available even when
PNG_WRITE_SUPPORTED is not enabled.
Revised Makefile.am and Makefile.in to simplify their maintenance.
Revised scripts/makefile.linux to install a link to libpng14.so.14.1
version 1.4.1beta02 [January 9, 2010] version 1.5.0beta02 [February 7, 2010]
Revised the rest of the makefiles to install a link to libpng14.so.14.1
version 1.4.1beta03 [January 10, 2010]
Removed png_set_premultiply_alpha() from scripts/*.def
version 1.4.1rc01 [January 16, 2010]
No changes.
version 1.4.1beta04 [January 23, 2010]
Revised png_decompress_chunk() to improve speed and memory usage when
decoding large chunks.
Added png_set|get_chunk_malloc_max() functions.
version 1.4.1beta05 [January 26, 2010]
Relocated "int k" declaration in pngtest.c to minimize its scope.
version 1.4.1beta06 [January 28, 2010]
Revised png_decompress_chunk() to use a two-pass method suggested by
John Bowler.
version 1.4.1beta07 [February 6, 2010]
Folded some long lines in the source files.
Added defineable PNG_USER_CHUNK_CACHE_MAX and PNG_USER_CHUNK_MALLOC_MAX
Eliminated use of png_ptr->irowbytes and reused the slot in png_ptr as
png_ptr->png_user_chunk_malloc_max.
Revised png_push_save_buffer() to do fewer but larger png_malloc() calls.
version 1.4.1beta08 [February 6, 2010]
Minor cleanup and updating of dates and copyright year.
version 1.4.1beta09 [February 7, 2010]
Reverted to original png_push_save_buffer() code. Reverted to original png_push_save_buffer() code.
version 1.4.1beta10 [February 9, 2010] version 1.5.0beta03 [February 8, 2010]
Return allocated "old_buffer" in png_push_save_buffer() before calling Return allocated "old_buffer" in png_push_save_buffer() before
png_error(), to avoid a potential memory leak. calling png_error().
Updated configure script to use SO number 15.
version 1.4.1beta11 [February 12, 2010] version 1.5.0beta04 [February 9, 2010]
Removed malformed "incomplete struct declaration" of png_info from png.h
version 1.5.0beta05 [February 13, 2010]
Removed PNG_DEPSTRUCT markup in pngstruct.h and pnginfo.h, and undid the
linewrapping that it entailed.
Revised comments in pngstruct.h and pnginfo.h and added pointers to
the libpng license.
Changed PNG_INTERNAL to PNG_EXPOSE_INTERNAL_STRUCTURES
Removed the cbuilder5 project, which has not been updated to 1.4.0. Removed the cbuilder5 project, which has not been updated to 1.4.0.
Removed unused "buffer_size" variable from png_decompress_chunk().
Relocated misplaced closing curley bracket in png_decompress_chunk().
Reverted to original png_decompress_chunk() plus counting pass.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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33
CHANGES
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@ -2412,8 +2412,8 @@ version 1.4.0beta107 [December 4, 2009]
Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco
to put png.h and pngconf.h in $prefix/include, like the other scripts, to put png.h and pngconf.h in $prefix/include, like the other scripts,
instead of in $prefix/include/libpng. Also revised makefile.sco instead of in $prefix/include/libpng. Also revised makefile.sco
to put them in $prefix/include/libpng14 instead of in to put them in $prefix/include/libpng15 instead of in
$prefix/include/libpng/libpng14. $prefix/include/libpng/libpng15.
version 1.4.0beta108 [December 11, 2009] version 1.4.0beta108 [December 11, 2009]
Removed leftover "-DPNG_CONFIGURE_LIBPNG" from contrib/pngminim/*/makefile Removed leftover "-DPNG_CONFIGURE_LIBPNG" from contrib/pngminim/*/makefile
@ -2502,20 +2502,29 @@ version 1.4.1beta07 [February 6, 2010]
version 1.4.1beta08 [February 6, 2010] version 1.4.1beta08 [February 6, 2010]
Minor cleanup and updating of dates and copyright year. Minor cleanup and updating of dates and copyright year.
version 1.4.1beta09 [February 7, 2010]
version 1.5.0beta01 [February 7, 2010]
Moved declaration of png_struct into private pngstruct.h and png_info
into pnginfo.h
version 1.4.1beta09 and 1.5.0beta02 [February 7, 2010]
Reverted to original png_push_save_buffer() code. Reverted to original png_push_save_buffer() code.
version 1.4.1beta10 [February 9, 2010] version 1.4.1beta10 and 1.5.0beta03 [February 8, 2010]
Return allocated "old_buffer" in png_push_save_buffer() before calling Return allocated "old_buffer" in png_push_save_buffer() before
png_error(), to avoid a potential memory leak. calling png_error(), to avoid a potential memory leak.
Updated configure script to use SO number 15.
version 1.4.1beta11 [February 12, 2010] version 1.5.0beta04 [February 9, 2010]
Relocated misplaced closing curley bracket in png_decompress_chunk(). Removed malformed "incomplete struct declaration" of png_info from png.h
Removed unused "buffer_size" variable from png_decompress_chunk().
version 1.5.0beta05 [February 13, 2010]
Removed PNG_DEPSTRUCT markup in pngstruct.h and pnginfo.h, and undid the
linewrapping that it entailed.
Revised comments in pngstruct.h and pnginfo.h and added pointers to
the libpng license.
Changed PNG_INTERNAL to PNG_EXPOSE_INTERNAL_STRUCTURES
Removed the cbuilder5 project, which has not been updated to 1.4.0. Removed the cbuilder5 project, which has not been updated to 1.4.0.
Reverted to original png_decompress_chunk() plus counting pass.
version 1.4.1rc02 [February 12, 2010]
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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1
pngrutil.c
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@ -14,6 +14,7 @@
* libpng itself during the course of reading an image. * libpng itself during the course of reading an image.
*/ */
#define PNG_EXPOSE_INTERNAL_STRUCTURES
#define PNG_NO_PEDANTIC_WARNINGS #define PNG_NO_PEDANTIC_WARNINGS
#include "png.h" #include "png.h"
#ifdef PNG_READ_SUPPORTED #ifdef PNG_READ_SUPPORTED