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mus/play/ac3dec.lha

Mirror:Random
Showing:i386-arosgeneric
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Short:AC3 (Dolby Digital) audio decoder
Author:Aaron Holtzman, Sebastian Jedruszkiewicz (Amiga port)
Uploader:Sebastian Jedruszkiewicz <elf frogger rules pl>
Type:mus/play
Version:0.82
Architecture:m68k-amigaos; ppc-powerup
Www:http://frogger.rules.pl/
Date:2000-12-05
Download:http://aminet.net/mus/play/ac3dec.lha - View contents
Readme:http://aminet.net/mus/play/ac3dec.readme
Downloads:3368
Short:
------

AC3dec can decode and play a3c files. AC3 compression is used in DVD,
for example.
ac3dec if compiled for PowerUP, but should also work with ppc.lib
emulation under WOS.
68k version is also available now. You wont be able to listen ac3 streams in
realtime even on 060, but there is AIFF save mode, so at least audio can be
decoded, and you can listen it with other tools, like play16.
Oh - ac3_extract is not available anymore. Use Splitter (you can find
it on Frogger home page) - it is better/faster.

Usage:
------
ac3dec FILE,MODE/K,AHIUNIT/N:

FILE - AC3 stream to play.

MODE - output mode. right now only 4 exists:
       ahi   - audio is played using ahi.device
       raw   - decoded audio is saved as RAW to specified file.
               ASL pops up, and lets you select output file name.
       aiff  - output sample to AIFF file. sndfile.library required. 
       speed - test decoder speed. it gives info of decoding time
               and (hipotetic) playing time. And a play/decoding ratio.
               if ratio is >= 1, ac3 stream may/will be decoded in
               realtime. if not - sorry, go and buy faster machine.

       Deafult mode is AHI.

AHIUNIT - specify ahi unit to play audio on. Default 0.


Version History:
----------------
v0.62 - initial release

v0.7  - fixed all problems with quality.
      - added FILE output.
      - added standard Amiga ReadArgs options handling.
      - some PPC specific optimizations.

v0.71 - Fied bug which caused crash if no file was given.
      - Added AHIUNIT parameter.
      - Another sets of optimizations. Speedup > 80%.
        And thats not all of the optimizations I got in my head...
      - Added SPEED output mode.

v0.8  - Another huge sets of optimizations. About 40% faster.

v0.81 - Fixed problems with broken ac3 streams (neverending CRC errors...)
v0.82 - Added CPU % usage in speed mode.
      - Added AIFF output (sndfile.library required)
      - Small speedup (1-2%)
      - 68k version available.


Contents of mus/play/ac3dec.lha
 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                44380   98900  44.9% -lh5- b99a Dec  5  2000 ac3dec
[generic]                28752   60416  47.6% -lh5- 5da2 Dec  5  2000 ac3dec.68k
[generic]                 1125    2236  50.3% -lh5- f426 Dec  5  2000 ac3dec.readme
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         3 files   74257  161552  46.0%            Dec  5  2000

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