a52dec-0.7.4 Sat Jul 27 20:44:00 PDT 2002

-The library is now fully reentrant.

-Added win32 output module, al file output, gain control.

-A few additional portability enhancements.

a52dec-0.7.3 Wed Feb 20 23:38:22 PST 2002

-rewrite of the imdct code, making a52dec 40% to 80% faster than version 0.7.2

-fixed one memory corruption problem in parse.c

-small liba52 portability fixes

-byte order and CRLF bugfixes in wav file output

-aif file output

-IRIX al sound output (untested, tell us if it works)

a52dec-0.7.2 Sun Dec 16 14:39:56 PST 2001

-demuxer improvements, with support for TS streams.

-smaller demux buffer, making it easier to use a52dec as a pipe

-wav output

-avoid -fPIC when possible (-prefer-non-pic)

-support for vc++ and TenDRA

-portability fixes

a52dec-0.7.1b Fri Aug 31 02:37:23 PDT 2001

-removed an #include <stdint.h> that was only breaking libc5 builds

a52dec-0.7.1 Thu Aug 30 02:13:23 PDT 2001

-gcc 3.0 fixes

-mlib fixes (now passes the test suite)

-in a52dec.c, made sample_data and flags static

-removed a few statics in liba52/parse.c (still not reentrant, but closer)

a52dec-0.7.0 Thu Aug 23 23:18:00 PDT 2001

-Downmix to arbitrary speaker configurations

-Dynamic range compression

-Major speedups: 2x for 2.0 streams with 2.0 output,

                 3x for 5.1 streams with 2.0 output.

-New library interface

-Rematrixing bugfix

-Higher precision

ac3dec-0.6.1 Mon Mar 27 20:27:06 EST 2000

-Fix another 2.0 problem (rematrix was wrong).

-Fix the never resync on a bad crc bug.

ac3dec-0.6.0 Sat Mar 18 19:43:25 EST 2000

-New library interface 

-Fix bug wrt coupling channels that was causing sound quality problems. 

-Fix 2.0 mode problems (aka the I forgot to implement the phase flags bug). 

-All around speed improvements (almost twice as fast) 

-Improved robustness when fed bad data. The entire frame is checksummed before playback.

ac3dec-0.5.6 Tue Nov 16 00:37:34 EST 1999

-Irix support 

-Alpha fixes 

-Minor performance enhancements to downmix and imdct

-OpenBSD fixes 

-extract_ac3 can now read from stdin

-Change output_linux to block on write instead of using the

 ring buffer. Let me know if this causes/fixes any problems

ac3dec-0.5.5 Wed Aug 25 15:36:44 EDT 1999

-Fixed a cut and paste bug (argh!) in parse.c which potentially 

 screwed up delta bit allocation info.

-Martin Mueller <mamueller@topmail.de> informed me that I was missing

 some corrections from the AC-3 errata document. It turns out that 

 I used an earlier version of the errata when I initially wrote ac3dec.

 Fortunately the errata fix the outstanding bugs that I was pulling

 my hair out on for a long time. Woohoo! Thanks Martin. Kudos to Dolby

 Labs for keeping their documentation up to date as well.

-stereo downmixing (downmix.c) is now in. Matrix encoded surround 

 (Dolby Prologic Surround) should work too.

-clipping due to high level signals has been fixed. We normalize a

 block of samples by its maximum absolute value if the max exceeds 

 the %100 digital level. This shouldn't be a problem, but for some 

 reason some channels have a dynamic range that exceeds [-1.0,1.0].

 I blame the encoder :)

-Multiple track support in extract_ac3. Simply just give it the track

 number you want [1,8] after the filename.

ac3dec-0.5.4 Thu Jul 29 16:55:10 PDT 1999

-Fixed a stupid bug with the coupling channel that was causing

 high frequencies to be attenuated.

-Re-wrote the extract_ac3 tool.

-Added to a tool to verify the checksums on a given AC3 stream. 

 (tools/verify_ac3)

ac3dec-0.5.3  Mon Jul 12 10:45:56 PDT 1999

-Fixed problems related to streams with coupling channel enabled.

-Minor performance enhancements

ac3dec-0.5.2  Sun Jul  4 12:00:25 PDT 1999

-output_linux.c patch provided by Michael Holzt <kju@flummi.de>

ac3dec-0.5.1  Wed Jun 30 17:48:52 PDT 1999

-Compiles and dies gracefully under Linux now.

ac3dec-0.5.0  Wed Jun 23 11:06:06 EDT 1999

-First public release of ac3dec.