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77 Commits

Author SHA1 Message Date
Justin Ruggles 3357ff338b use table for converting dynamic range codes to scale factors 
Originally committed as revision 9889 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 03:27:05 +00:00
Justin Ruggles 5aefe3ebef use floating-point mantissa dequantization tables 
Originally committed as revision 9888 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 03:21:17 +00:00
Justin Ruggles 04ac5cada1 cosmetics: indentation 
Originally committed as revision 9887 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 01:14:14 +00:00
Justin Ruggles 60f07fadd3 dither zero-bit mantissas by default. remove dithering only if it's explicitly turned off. 
Originally committed as revision 9886 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 01:13:08 +00:00
Justin Ruggles d63f6fea50 simplify coefficient decoding 
Originally committed as revision 9884 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 00:12:23 +00:00
Justin Ruggles 285bf28c67 merge decoding of coupling channel coefficients and regular channel coefficients 
Originally committed as revision 9883 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 00:04:17 +00:00
Justin Ruggles d7dc7ad05c split out coupling coefficient reconstruction into a separate function 
Originally committed as revision 9882 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-03 23:53:53 +00:00
Justin Ruggles dfd57c366f align array used in mdct. fixes segfault. 
Originally committed as revision 9848 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-01 01:13:58 +00:00
Justin Ruggles 8b60bbbf5b simplify stereo rematrixing 
Originally committed as revision 9824 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-29 00:58:32 +00:00
Justin Ruggles b6acc57f88 change 2 fields from context to local variables 
Originally committed as revision 9823 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-29 00:35:30 +00:00
Justin Ruggles 8fbb368d2c BLOCK_SIZE is not used properly, just use numbers instead to avoid confusion 
Originally committed as revision 9822 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-28 20:50:25 +00:00
Justin Ruggles 7bfd22f25a remove broken downmixing. will add new implementation later. 
Originally committed as revision 9821 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-28 19:33:19 +00:00
Justin Ruggles 4611b64ec1 simplify snr offset and bit allocation 
Originally committed as revision 9784 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-24 02:08:27 +00:00
Justin Ruggles e9a3824880 only use sized data types when necessary 
Originally committed as revision 9783 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-24 01:43:47 +00:00
Justin Ruggles 8f58a4c943 set bit allocation parameters directly instead of copying 
Originally committed as revision 9782 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-24 01:35:25 +00:00
Justin Ruggles e2cd6686fa use enum value instead of numerical value for acmod 
Originally committed as revision 9781 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-23 22:47:49 +00:00
Justin Ruggles bc8edb7e53 use consistent data type for exponents. needs to be int8_t to pass to bit allocation. 
Originally committed as revision 9780 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-23 22:23:37 +00:00
Justin Ruggles 878c40a137 change some bit masks to arrays 
Originally committed as revision 9779 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-23 22:16:15 +00:00
Justin Ruggles bec37145da cosmetics: indentation 
Originally committed as revision 9774 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-21 17:03:30 +00:00
Justin Ruggles 9fc1ab722e Use shared AC-3 header parsing. Move some initializations to block parsing function. 
Originally committed as revision 9773 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-21 16:28:12 +00:00
Justin Ruggles 9ef6039043 don't need to synchronize in the decoder. the parser does that already. 
Originally committed as revision 9772 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-21 13:56:04 +00:00
Justin Ruggles de34875c75 get rid of an ugly macro 
Originally committed as revision 9771 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-21 11:54:19 +00:00
Justin Ruggles 614e9b2424 don't need to define ALT_BITSTREAM_READER 
Originally committed as revision 9752 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-19 02:21:14 +00:00
Justin Ruggles 362664215d update license header. add copyright for myself. correct and complete the statement about liba52. 
Originally committed as revision 9751 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-19 02:16:20 +00:00
Justin Ruggles 3bb004fcda revise comment for exponent decoding function 
Originally committed as revision 9750 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-19 02:09:58 +00:00
Justin Ruggles 4415076f55 new implementation of exponent decoding 
Originally committed as revision 9749 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-19 02:04:05 +00:00
Justin Ruggles d699d38393 cosmetics: indentation 
Originally committed as revision 9748 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-19 00:51:19 +00:00
Justin Ruggles 0ce668015f remove portions of bit allocation which are no longer needed since they are shared with the encoder 
Originally committed as revision 9747 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-19 00:50:31 +00:00
Justin Ruggles 0de73a46ff fix the 256-point MDCT 
Originally committed as revision 9685 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-15 14:47:39 +00:00
Justin Ruggles 623b79435d use shared ac3 bit allocation function 
Originally committed as revision 9684 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-15 13:53:42 +00:00
Justin Ruggles fa67992dea no need for the decoder to have the license as a prefix 
Originally committed as revision 9682 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-15 01:38:13 +00:00
Justin Ruggles 76d357fd23 remove a debugging function and variable, and remove the commented-out code which uses them. 
Originally committed as revision 9681 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-15 01:35:46 +00:00
Justin Ruggles a39532b0d9 ABS -> FFABS 
Originally committed as revision 9680 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-15 01:32:04 +00:00
Justin Ruggles cc2a8443eb move some common values to ac3.h and utilize them 
Originally committed as revision 9679 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-15 01:31:09 +00:00
Justin Ruggles cb503702ee use random number generator from libavutil 
Originally committed as revision 9678 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 23:57:05 +00:00
Justin Ruggles 9d10960194 10l to me. I accidentally removed a word. 
Originally committed as revision 9677 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 22:17:23 +00:00
Justin Ruggles 0ec2cc35f7 revise license header for simplicity and consistency 
Originally committed as revision 9676 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 18:53:56 +00:00
Justin Ruggles 283614b5fc make ac3dec.c GPL until violations are fixed 
Originally committed as revision 9674 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 16:07:56 +00:00
Justin Ruggles 967d397a6c AC-3 decoder, soc revision 402, Jul 14 13:45:14 2007 UTC by jbr 
merge ac3_decoder.h into ac3_decoder.c

Originally committed as revision 9673 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 16:06:14 +00:00
Loren Merritt afb46fc092 AC-3 decoder, soc revision 148, Sep 28 18:38:27 2006 UTC by banan 
Enable sse imdct, patch by Loren Merrit.

Originally committed as revision 9672 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 16:05:39 +00:00
Justin Ruggles de17eee70f AC-3 decoder, soc revision 109, Sep 22 22:42:54 2006 UTC by banan 
Cosmetics.

Originally committed as revision 9671 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 16:05:13 +00:00
Justin Ruggles 1ea76064b4 AC-3 decoder, soc revision 72, Sep 7 04:20:00 2006 UTC by cloud9 
fix short block imdct.

Originally committed as revision 9670 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 16:04:40 +00:00
Justin Ruggles c7cfc48f37 AC-3 decoder, soc revision 71, Sep 4 09:47:12 2006 UTC by cloud9 
Redundant code cleanup.
Optimized dither generation.
Minor optimization in bit allocation.
Comments.

Originally committed as revision 9669 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 16:04:17 +00:00
Justin Ruggles 860fe8c908 AC-3 decoder, soc revision 70, Aug 31 18:04:23 2006 UTC by banan 
Cosmetics, white space removal.

Originally committed as revision 9668 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 16:03:47 +00:00
Justin Ruggles 6dc5d71f97 AC-3 decoder, soc revision 69, Aug 31 07:12:56 2006 UTC by cloud9 
Fix the bugs:
1. The quality of output because of incorrect windowing coefficients.
New code for window generation.

2. Dynrng values were reset where dynrng value is present in the first block,
but not in the subsequent block.

Originally committed as revision 9667 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 16:03:14 +00:00
Justin Ruggles d7bcc4adcf AC-3 decoder, soc revision 58, Aug 19 14:20:45 2006 UTC by cloud9 
Further optimizations.

Originally committed as revision 9666 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 16:02:32 +00:00
Justin Ruggles 1d0a6f5209 AC-3 decoder, soc revision 57, Aug 19 12:44:38 2006 UTC by cloud9 
Optimization as suggested by Benjamin.

Originally committed as revision 9665 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 16:02:08 +00:00
Justin Ruggles 032732d49d AC-3 decoder, soc revision 56, Aug 17 14:21:58 2006 UTC by cloud9 
Acknowledgements.

Originally committed as revision 9664 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 16:01:44 +00:00
Justin Ruggles e6bca37c81 AC-3 decoder, soc revision 55, Aug 17 12:25:24 2006 UTC by cloud9 
Remove more unnecessary headers.
Codec initialization changed to use name => argument notation.

Originally committed as revision 9663 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 16:01:14 +00:00
Justin Ruggles 3ff88ff45a AC-3 decoder, soc revision 54, Aug 17 09:13:08 2006 UTC by cloud9 
Remove unnecessary header files.

Originally committed as revision 9662 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-07-14 16:00:38 +00:00