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https://github.com/alsa-project/alsa-tools.git
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59 lines
2.5 KiB
Text
59 lines
2.5 KiB
Text
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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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