mewin/libpng
1
0
Fork 0
mirror of https://git.code.sf.net/p/libpng/code.git synced 2025-07-10 18:04:09 +02:00
Code Issues Projects Releases Wiki Activity

[libpng17] Update CHANGES and ANNOUNCE

Browse Source
This commit is contained in:
Glenn Randers-Pehrson 2016-06-07 14:46:42 -05:00
parent 2b711a751c
commit b70b51ba17
2 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
ANNOUNCE
View File

@ -1356,6 +1356,22 @@ Version 1.7.0beta81 [June 7, 2016]
appropriate debug() assert if a fill for 0 bytes occurs. appropriate debug() assert if a fill for 0 bytes occurs.
Most PNG_FLAG_ values for png_struct::flags have been eliminated (as a Most PNG_FLAG_ values for png_struct::flags have been eliminated (as a
result of the benign error handling changes). Only one remains. result of the benign error handling changes). Only one remains.
The LOW_MEMORY PNG_COMPRESSION option should not be setting HUFFMAN_ONLY or
using a low deflate 'level'; according to the comments in zconf.h only
windowBits and memLevel affect the memory. pngwutil.c has been changed
to use the same values as HIGH compression.
The COMPAT option turned on the old optimize_cmf code (now in fix_cinfo),
however there was a serious bug in that code; it put the wrong value in
z_cmf. The setting was also not handled correctly in
pz_compression_settings.
pngtest now verifies the operation of COMPAT and, as a result, pngtest.png
has been reverted to the libpng 1.6 (etc) version.
IDAT size handling has been improved; if not explicitly set values
appropriate to png_level are now chosen (in addition to the handling for
the COMPAT setting). HIGH and HIGH_READ_SPEED now create unlimited
(up to the PNG chunk-size limit of 2^31-1 bytes) size IDAT chunks,
which requires buffering the whole of the IDAT data in memory but
reflects what other programs and optimizers do.
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

16
CHANGES
View File

@ -5656,6 +5656,22 @@ Version 1.7.0beta81 [June 7, 2016]
appropriate debug() assert if a fill for 0 bytes occurs. appropriate debug() assert if a fill for 0 bytes occurs.
Most PNG_FLAG_ values for png_struct::flags have been eliminated (as a Most PNG_FLAG_ values for png_struct::flags have been eliminated (as a
result of the benign error handling changes). Only one remains. result of the benign error handling changes). Only one remains.
The LOW_MEMORY PNG_COMPRESSION option should not be setting HUFFMAN_ONLY or
using a low deflate 'level'; according to the comments in zconf.h only
windowBits and memLevel affect the memory. pngwutil.c has been changed
to use the same values as HIGH compression.
The COMPAT option turned on the old optimize_cmf code (now in fix_cinfo),
however there was a serious bug in that code; it put the wrong value in
z_cmf. The setting was also not handled correctly in
pz_compression_settings.
pngtest now verifies the operation of COMPAT and, as a result, pngtest.png
has been reverted to the libpng 1.6 (etc) version.
IDAT size handling has been improved; if not explicitly set values
appropriate to png_level are now chosen (in addition to the handling for
the COMPAT setting). HIGH and HIGH_READ_SPEED now create unlimited
(up to the PNG chunk-size limit of 2^31-1 bytes) size IDAT chunks,
which requires buffering the whole of the IDAT data in memory but
reflects what other programs and optimizers do.
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