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