98 lines
3.8 KiB
Text
98 lines
3.8 KiB
Text
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a52dec-0.7.4 Sat Jul 27 20:44:00 PDT 2002
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-The library is now fully reentrant.
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-Added win32 output module, al file output, gain control.
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-A few additional portability enhancements.
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a52dec-0.7.3 Wed Feb 20 23:38:22 PST 2002
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-rewrite of the imdct code, making a52dec 40% to 80% faster than version 0.7.2
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-fixed one memory corruption problem in parse.c
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-small liba52 portability fixes
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-byte order and CRLF bugfixes in wav file output
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-aif file output
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-IRIX al sound output (untested, tell us if it works)
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a52dec-0.7.2 Sun Dec 16 14:39:56 PST 2001
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-demuxer improvements, with support for TS streams.
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-smaller demux buffer, making it easier to use a52dec as a pipe
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-wav output
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-avoid -fPIC when possible (-prefer-non-pic)
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-support for vc++ and TenDRA
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-portability fixes
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a52dec-0.7.1b Fri Aug 31 02:37:23 PDT 2001
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-removed an #include <stdint.h> that was only breaking libc5 builds
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a52dec-0.7.1 Thu Aug 30 02:13:23 PDT 2001
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-gcc 3.0 fixes
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-mlib fixes (now passes the test suite)
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-in a52dec.c, made sample_data and flags static
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-removed a few statics in liba52/parse.c (still not reentrant, but closer)
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a52dec-0.7.0 Thu Aug 23 23:18:00 PDT 2001
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-Downmix to arbitrary speaker configurations
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-Dynamic range compression
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-Major speedups: 2x for 2.0 streams with 2.0 output,
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3x for 5.1 streams with 2.0 output.
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-New library interface
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-Rematrixing bugfix
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-Higher precision
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ac3dec-0.6.1 Mon Mar 27 20:27:06 EST 2000
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-Fix another 2.0 problem (rematrix was wrong).
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-Fix the never resync on a bad crc bug.
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ac3dec-0.6.0 Sat Mar 18 19:43:25 EST 2000
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-New library interface
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-Fix bug wrt coupling channels that was causing sound quality problems.
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-Fix 2.0 mode problems (aka the I forgot to implement the phase flags bug).
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-All around speed improvements (almost twice as fast)
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-Improved robustness when fed bad data. The entire frame is checksummed before playback.
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ac3dec-0.5.6 Tue Nov 16 00:37:34 EST 1999
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-Irix support
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-Alpha fixes
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-Minor performance enhancements to downmix and imdct
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-OpenBSD fixes
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-extract_ac3 can now read from stdin
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-Change output_linux to block on write instead of using the
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ring buffer. Let me know if this causes/fixes any problems
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ac3dec-0.5.5 Wed Aug 25 15:36:44 EDT 1999
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-Fixed a cut and paste bug (argh!) in parse.c which potentially
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screwed up delta bit allocation info.
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-Martin Mueller <mamueller@topmail.de> informed me that I was missing
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some corrections from the AC-3 errata document. It turns out that
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I used an earlier version of the errata when I initially wrote ac3dec.
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Fortunately the errata fix the outstanding bugs that I was pulling
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my hair out on for a long time. Woohoo! Thanks Martin. Kudos to Dolby
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Labs for keeping their documentation up to date as well.
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-stereo downmixing (downmix.c) is now in. Matrix encoded surround
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(Dolby Prologic Surround) should work too.
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-clipping due to high level signals has been fixed. We normalize a
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block of samples by its maximum absolute value if the max exceeds
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the %100 digital level. This shouldn't be a problem, but for some
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reason some channels have a dynamic range that exceeds [-1.0,1.0].
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I blame the encoder :)
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-Multiple track support in extract_ac3. Simply just give it the track
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number you want [1,8] after the filename.
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ac3dec-0.5.4 Thu Jul 29 16:55:10 PDT 1999
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-Fixed a stupid bug with the coupling channel that was causing
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high frequencies to be attenuated.
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-Re-wrote the extract_ac3 tool.
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-Added to a tool to verify the checksums on a given AC3 stream.
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(tools/verify_ac3)
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ac3dec-0.5.3 Mon Jul 12 10:45:56 PDT 1999
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-Fixed problems related to streams with coupling channel enabled.
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-Minor performance enhancements
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ac3dec-0.5.2 Sun Jul 4 12:00:25 PDT 1999
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-output_linux.c patch provided by Michael Holzt <kju@flummi.de>
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ac3dec-0.5.1 Wed Jun 30 17:48:52 PDT 1999
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-Compiles and dies gracefully under Linux now.
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ac3dec-0.5.0 Wed Jun 23 11:06:06 EDT 1999
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-First public release of ac3dec.
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