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[libpng17] Update CHANGES and ANNOUNCE, fix typo in png.h

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Glenn Randers-Pehrson 2016-01-10 19:34:16 -06:00
parent fc322f6d48
commit 2fce16e5c4
3 changed files with 37 additions and 9 deletions
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18
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.7.0beta77 - January 10, 2016 Libpng 1.7.0beta77 - January 11, 2016
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.
@ -1172,7 +1172,7 @@ Version 1.7.0beta76 [January 7, 2016]
Fixed new Coverity defect, potential NULL dereference of "ps" in pngwutil.c Fixed new Coverity defect, potential NULL dereference of "ps" in pngwutil.c
Added temporary workaround for Coverity "Dead code" defect. Added temporary workaround for Coverity "Dead code" defect.
Version 1.7.0beta77 [January 10, 2016] Version 1.7.0beta77 [January 11, 2016]
Fixed new Coverity defect, another NULL dereference of "ps" in pngwutil.c Fixed new Coverity defect, another NULL dereference of "ps" in pngwutil.c
Prevent the CMINFO optimization code from running twice on any PNG IDAT Prevent the CMINFO optimization code from running twice on any PNG IDAT
stream longer than 2048 bytes; the second time could overwrite bytes stream longer than 2048 bytes; the second time could overwrite bytes
@ -1186,6 +1186,20 @@ Version 1.7.0beta77 [January 10, 2016]
IDAT that libpng can produce with those settings.) It also contains IDAT that libpng can produce with those settings.) It also contains
a "--search" command line option that attempts to optimize this by a "--search" command line option that attempts to optimize this by
skipping pointless tests; it is close, most of the time, but not perfect. skipping pointless tests; it is close, most of the time, but not perfect.
Fixed write problem with reduced size IDAT chunks.
png_set_compression_buffer_size would result in a spurious debug assert
if the compression buffer size was set to something other than a multiple
of PNG_ROW_BUFFER_SIZE; the debug test failed to add the buffer 'start'
The sequential read code failed to read to the end of the IDAT stream in
about 1 of 820 cases, resulting in a spurious warning. The
png_set_compression_buffer_size API also would not work (or do bad things)
if the size of a zlib uInt was less than 32 bits.
Added pngcp IDAT size test and changed the order of the 'level'
and 'windowBits' searches to seach windowBits first; this favors
windowBits optimizations over compression level ones on the basis
that the latter should only affect the write code. This includes a
quiet API change to alter png_set_compression_buffer_size to use
a png_alloc_size_t, not png_size_t and implement the correct checks.
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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16
CHANGES
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@ -5471,7 +5471,7 @@ Version 1.7.0beta76 [January 7, 2016]
Fixed new Coverity defect, potential NULL dereference of "ps" in pngwutil.c Fixed new Coverity defect, potential NULL dereference of "ps" in pngwutil.c
Added temporary workaround for Coverity "Dead code" defect. Added temporary workaround for Coverity "Dead code" defect.
Version 1.7.0beta77 [January 10, 2016] Version 1.7.0beta77 [January 11, 2016]
Fixed new Coverity defect, another NULL dereference of "ps" in pngwutil.c Fixed new Coverity defect, another NULL dereference of "ps" in pngwutil.c
Prevent the CMINFO optimization code from running twice on any PNG IDAT Prevent the CMINFO optimization code from running twice on any PNG IDAT
stream longer than 2048 bytes; the second time could overwrite bytes stream longer than 2048 bytes; the second time could overwrite bytes
@ -5485,6 +5485,20 @@ Version 1.7.0beta77 [January 10, 2016]
IDAT that libpng can produce with those settings.) It also contains IDAT that libpng can produce with those settings.) It also contains
a "--search" command line option that attempts to optimize this by a "--search" command line option that attempts to optimize this by
skipping pointless tests; it is close, most of the time, but not perfect. skipping pointless tests; it is close, most of the time, but not perfect.
Fixed write problem with reduced size IDAT chunks.
png_set_compression_buffer_size would result in a spurious debug assert
if the compression buffer size was set to something other than a multiple
of PNG_ROW_BUFFER_SIZE; the debug test failed to add the buffer 'start'
The sequential read code failed to read to the end of the IDAT stream in
about 1 of 820 cases, resulting in a spurious warning. The
png_set_compression_buffer_size API also would not work (or do bad things)
if the size of a zlib uInt was less than 32 bits.
Added pngcp IDAT size test and changed the order of the 'level'
and 'windowBits' searches to seach windowBits first; this favors
windowBits optimizations over compression level ones on the basis
that the latter should only affect the write code. This includes a
quiet API change to alter png_set_compression_buffer_size to use
a png_alloc_size_t, not png_size_t and implement the correct checks.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit (subscription required; visit

12
png.h
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@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library /* png.h - header file for PNG reference library
* *
* libpng version 1.7.0beta77, January 7, 2016 * libpng version 1.7.0beta77, January 11, 2016
* *
* Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -12,7 +12,7 @@
* Authors and maintainers: * Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
* libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger * libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.7.0beta77, January 7, 2016: * libpng versions 0.97, January 1998, through 1.7.0beta77, January 11, 2016:
* Glenn Randers-Pehrson. * Glenn Randers-Pehrson.
* See also "Contributing Authors", below. * See also "Contributing Authors", below.
*/ */
@ -25,7 +25,7 @@
* *
* This code is released under the libpng license. * This code is released under the libpng license.
* *
* libpng versions 1.0.7, July 1, 2000, through 1.7.0beta77, January 7, 2016, are * libpng versions 1.0.7, July 1, 2000, through 1.7.0beta77, January 11, 2016, are
* Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are * Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
* derived from libpng-1.0.6, and are distributed according to the same * derived from libpng-1.0.6, and are distributed according to the same
* disclaimer and license as libpng-1.0.6 with the following individuals * disclaimer and license as libpng-1.0.6 with the following individuals
@ -218,7 +218,7 @@
* Y2K compliance in libpng: * Y2K compliance in libpng:
* ========================= * =========================
* *
* January 7, 2016 * January 11, 2016
* *
* Since the PNG Development group is an ad-hoc body, we can't make * Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration. * an official declaration.
@ -288,7 +288,7 @@
/* Version information for png.h - this should match the version in png.c */ /* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.7.0beta77" #define PNG_LIBPNG_VER_STRING "1.7.0beta77"
#define PNG_HEADER_VERSION_STRING \ #define PNG_HEADER_VERSION_STRING \
" libpng version 1.7.0beta77 - January 7, 2016\n" " libpng version 1.7.0beta77 - January 11, 2016\n"
#define PNG_LIBPNG_VER_SONUM 17 #define PNG_LIBPNG_VER_SONUM 17
#define PNG_LIBPNG_VER_DLLNUM 17 #define PNG_LIBPNG_VER_DLLNUM 17
@ -1113,7 +1113,7 @@ PNG_EXPORTA(5, png_structp, png_create_write_struct,
png_error_ptr warn_fn), png_error_ptr warn_fn),
PNG_ALLOCATED); PNG_ALLOCATED);
/* These APIs control the sie of the buffer used when reading IDAT chunks in the /* These APIs control the size of the buffer used for reading IDAT chunks in the
* sequential read code and the size of the IDAT chunks produced when writing. * sequential read code and the size of the IDAT chunks produced when writing.
* They have no effect on the progressive read code. In both read and write * They have no effect on the progressive read code. In both read and write
* cases it will be necessary to allocate at least this amount of buffer space. * cases it will be necessary to allocate at least this amount of buffer space.