1 a52dec-0.7.4 Sat Jul 27 20:44:00 PDT 2002
2 -The library is now fully reentrant.
3 -Added win32 output module, al file output, gain control.
4 -A few additional portability enhancements.
6 a52dec-0.7.3 Wed Feb 20 23:38:22 PST 2002
7 -rewrite of the imdct code, making a52dec 40% to 80% faster than version 0.7.2
8 -fixed one memory corruption problem in parse.c
9 -small liba52 portability fixes
10 -byte order and CRLF bugfixes in wav file output
12 -IRIX al sound output (untested, tell us if it works)
14 a52dec-0.7.2 Sun Dec 16 14:39:56 PST 2001
15 -demuxer improvements, with support for TS streams.
16 -smaller demux buffer, making it easier to use a52dec as a pipe
18 -avoid -fPIC when possible (-prefer-non-pic)
19 -support for vc++ and TenDRA
22 a52dec-0.7.1b Fri Aug 31 02:37:23 PDT 2001
23 -removed an #include <stdint.h> that was only breaking libc5 builds
25 a52dec-0.7.1 Thu Aug 30 02:13:23 PDT 2001
27 -mlib fixes (now passes the test suite)
28 -in a52dec.c, made sample_data and flags static
29 -removed a few statics in liba52/parse.c (still not reentrant, but closer)
31 a52dec-0.7.0 Thu Aug 23 23:18:00 PDT 2001
32 -Downmix to arbitrary speaker configurations
33 -Dynamic range compression
34 -Major speedups: 2x for 2.0 streams with 2.0 output,
35 3x for 5.1 streams with 2.0 output.
36 -New library interface
40 ac3dec-0.6.1 Mon Mar 27 20:27:06 EST 2000
41 -Fix another 2.0 problem (rematrix was wrong).
42 -Fix the never resync on a bad crc bug.
44 ac3dec-0.6.0 Sat Mar 18 19:43:25 EST 2000
45 -New library interface
46 -Fix bug wrt coupling channels that was causing sound quality problems.
47 -Fix 2.0 mode problems (aka the I forgot to implement the phase flags bug).
48 -All around speed improvements (almost twice as fast)
49 -Improved robustness when fed bad data. The entire frame is checksummed before playback.
51 ac3dec-0.5.6 Tue Nov 16 00:37:34 EST 1999
54 -Minor performance enhancements to downmix and imdct
56 -extract_ac3 can now read from stdin
57 -Change output_linux to block on write instead of using the
58 ring buffer. Let me know if this causes/fixes any problems
60 ac3dec-0.5.5 Wed Aug 25 15:36:44 EDT 1999
61 -Fixed a cut and paste bug (argh!) in parse.c which potentially
62 screwed up delta bit allocation info.
63 -Martin Mueller <mamueller@topmail.de> informed me that I was missing
64 some corrections from the AC-3 errata document. It turns out that
65 I used an earlier version of the errata when I initially wrote ac3dec.
66 Fortunately the errata fix the outstanding bugs that I was pulling
67 my hair out on for a long time. Woohoo! Thanks Martin. Kudos to Dolby
68 Labs for keeping their documentation up to date as well.
69 -stereo downmixing (downmix.c) is now in. Matrix encoded surround
70 (Dolby Prologic Surround) should work too.
71 -clipping due to high level signals has been fixed. We normalize a
72 block of samples by its maximum absolute value if the max exceeds
73 the %100 digital level. This shouldn't be a problem, but for some
74 reason some channels have a dynamic range that exceeds [-1.0,1.0].
75 I blame the encoder :)
76 -Multiple track support in extract_ac3. Simply just give it the track
77 number you want [1,8] after the filename.
79 ac3dec-0.5.4 Thu Jul 29 16:55:10 PDT 1999
80 -Fixed a stupid bug with the coupling channel that was causing
81 high frequencies to be attenuated.
82 -Re-wrote the extract_ac3 tool.
83 -Added to a tool to verify the checksums on a given AC3 stream.
86 ac3dec-0.5.3 Mon Jul 12 10:45:56 PDT 1999
87 -Fixed problems related to streams with coupling channel enabled.
88 -Minor performance enhancements
90 ac3dec-0.5.2 Sun Jul 4 12:00:25 PDT 1999
91 -output_linux.c patch provided by Michael Holzt <kju@flummi.de>
93 ac3dec-0.5.1 Wed Jun 30 17:48:52 PDT 1999
94 -Compiles and dies gracefully under Linux now.
96 ac3dec-0.5.0 Wed Jun 23 11:06:06 EDT 1999
97 -First public release of ac3dec.