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33 Commits

Author SHA1 Message Date
Justin Ruggles
7f3a7b5c40 ac3enc: add channel coupling support 
Channel coupling is an optional AC-3 feature that increases quality by
combining high frequency information from multiple channels into a
single channel. The per-channel high frequency information is sent with
less accuracy in both the frequency and time domains. This allows more
bits to be used for lower frequencies while preserving enough
information to reconstruct the high frequencies.
 2011-05-24 07:52:31 +02:00
Mans Rullgard
6d9f52b2cd ac3: move ff_ac3_bit_alloc_calc_bap to ac3dsp 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-29 19:31:45 +01:00
Mans Rullgard
2912e87a6c Replace FFmpeg with Libav in licence headers 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-19 13:33:20 +00:00
Mans Rullgard
21c900129c ac3: remove ff_ac3_critical_band_size_tab[] external declaration 
This fixes compilation broken by 6ed3b504f9

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-01-25 15:50:51 +00:00
Justin Ruggles
dc7e07ac1f Add stereo rematrixing support to the AC-3 encoders. 
This improves the audio quality significantly for stereo source with both the
fixed-point and floating-point AC-3 encoders.
Update acodec-ac3_fixed and seek-ac3_rm test references.

Originally committed as revision 26271 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2011-01-08 23:21:17 +00:00
Justin Ruggles
e0b9f94b39 cosmetics: use some size macros in ac3tab.c/h 
Originally committed as revision 25969 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-14 14:51:47 +00:00
Justin Ruggles
bfeca7beb6 Add channel layout support to the AC-3 decoder and AC-3 parser. 
Originally committed as revision 18622 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-04-19 15:05:32 +00:00
Justin Ruggles
95f3019a51 ac3dec: reorder output channels to SMPTE channel order 
Originally committed as revision 18542 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-04-17 08:43:04 +00:00
Justin Ruggles
a7c6e1171b ac3enc: reorder input channels to AC-3 channel order 
Originally committed as revision 18540 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-04-17 08:39:11 +00:00
Diego Biurrun
406792e7b0 cosmetics: Remove pointless period after copyright statement non-sentences. 
Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-19 15:46:40 +00:00
Stefano Sabatini
987903826b Globally rename the header inclusion guard names. 
Consistently apply this rule: the guard name is obtained from the
filename by stripping the leading "lib", converting '/' and '.'  to
'_' and uppercasing the resulting name. Guard names in the root
directory have to be prefixed by "FFMPEG_".

Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-31 07:39:47 +00:00
Justin Ruggles
14b7062829 cosmetics: make all references to AC-3 capitalized and hyphenated 
Originally committed as revision 14523 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-03 16:42:32 +00:00
Diego Biurrun
245976da2a Use full path for #includes from another directory. 
Originally committed as revision 13098 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-09 11:56:36 +00:00
Bartlomiej Wolowiec
0c79b1402a add a ff_ac3_parse_header_full() which calls ff_ac3_parse_header() 
and then reads the channel_map stuff

Originally committed as revision 12944 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-24 22:27:13 +00:00
Justin Ruggles
66ecf18e38 cosmetics: rename ac3 tables 
Originally committed as revision 11193 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-09 03:21:33 +00:00
Diego Biurrun
5b21bdabe4 Add FFMPEG_ prefix to all multiple inclusion guards. 
Originally committed as revision 10765 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-10-17 09:37:46 +00:00
Aurelien Jacobs
cd53ae3a65 cosmetics: align 
Originally committed as revision 8817 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-04-25 22:16:50 +00:00
Aurelien Jacobs
7adb10bedf move ac3 tables from a .h to a .c 
Originally committed as revision 8816 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-04-25 22:12:51 +00:00
Justin Ruggles
495529f7df hardcode ff_ac3_frame_sizes table 
Originally committed as revision 8435 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-18 04:53:21 +00:00
Justin Ruggles
050aa8b9bc remove redundancy in AC-3 parser by using common tables from ac3tab.h 
Originally committed as revision 8318 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-11 02:13:05 +00:00
Justin Ruggles
4258a0a32a Remove common code from AC-3 encoder and utilize ac3.c. 
Originally committed as revision 8306 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-03-09 13:57:42 +00:00
Diego Biurrun
b78e7197a8 Change license headers to say 'FFmpeg' instead of 'this program/this library' 
and fix GPL/LGPL version mismatches.

Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-10-07 15:30:46 +00:00
Diego Biurrun
04d7f60143 Add official LGPL license headers to the files that were missing them. 
Originally committed as revision 6219 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-09-10 14:02:42 +00:00
Justin Ruggles
1df051e197 Fix 2 bit allocation bugs. One fix enables using a higher bandwidth code. The other fixes an issue with floorcod=7. 
Originally committed as revision 6156 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-09-03 15:59:08 +00:00
Benjamin Larsson
6eb1427f0f Revert bad ac3enc commit, the commited code was bigger and slower. 
Originally committed as revision 5327 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-04-28 14:19:11 +00:00
Benjamin Larsson
176c142abc Patch to generate the ac3 window, based on code by Justin Ruggles. 
Originally committed as revision 5310 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-04-22 21:21:16 +00:00
Michael Niedermayer
e027d0a81e switch ac3enc to av_crc 
Originally committed as revision 5116 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2006-03-06 14:53:13 +00:00
Diego Biurrun
115329f160 COSMETICS: Remove all trailing whitespace. 
Originally committed as revision 4749 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2005-12-17 18:14:38 +00:00
Alex Beregszaszi
0c2a9d56d4 make the tables static 
Originally committed as revision 3255 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2004-06-26 10:08:49 +00:00
Michael Niedermayer
983e3246b7 per file doxy 
Originally committed as revision 1634 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2003-03-06 11:32:04 +00:00
Zdenek Kabelac
0c1a9edad4 * UINTX -> uintx_t INTX -> intx_t 
Originally committed as revision 1578 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2003-02-11 16:35:48 +00:00
Fabrice Bellard
6107fa87b4 preparing integration of new AC3 decoder 
Originally committed as revision 1089 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-10-28 00:39:05 +00:00
Fabrice Bellard
de6d9b6404 Initial revision 
Originally committed as revision 5 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2001-07-22 14:18:56 +00:00