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 <email@example.com> 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 <firstname.lastname@example.org> 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.