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121 Commits

Author SHA1 Message Date
Aurelien Jacobs 3abe5fbdc4 improve CRC API 
- don't export any global var
 - provide either generated or hardcoded tables

Originally committed as revision 11409 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-04 23:09:58 +00:00
Justin Ruggles 7564658bbc cosmetics: indentation and add a TODO comment 
Originally committed as revision 11389 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-04 00:39:03 +00:00
Justin Ruggles 471db688c6 only check ac3 crc if AVCodecContext.error_resilience > 0 
Originally committed as revision 11388 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-03 23:05:53 +00:00
Justin Ruggles d6939960d5 add crc check to ac3 decoder 
Originally committed as revision 11379 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-03 02:26:29 +00:00
Justin Ruggles 12eaa3b760 simplify 
Originally committed as revision 11360 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-30 22:58:20 +00:00
Justin Ruggles b35c67e58b pass an AC3DecodeContext to ac3_downmix() instead of multiple arguments 
Originally committed as revision 11359 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-30 22:28:17 +00:00
Justin Ruggles 866181e5e8 cosmetics: rename sampling_rate to sample_rate 
Originally committed as revision 11358 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-30 21:26:30 +00:00
Justin Ruggles 0345fade94 do not need to cast a (void *) 
Originally committed as revision 11357 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-30 21:24:49 +00:00
Justin Ruggles 1b70d88b7a cosmetics: vertical realignment after last commit 
Originally committed as revision 11356 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-30 21:09:08 +00:00
Justin Ruggles d802d7ca12 cosmetics: rename all AC3DecodeContext variables from ctx to s 
Originally committed as revision 11355 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-30 20:58:50 +00:00
Justin Ruggles 23c8cb89c9 cosmetics: rename GetBitContext gb to gbc 
Originally committed as revision 11354 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-30 20:47:22 +00:00
Justin Ruggles 005ab694ae remove unused context variable 
Originally committed as revision 11353 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-30 03:10:18 +00:00
Justin Ruggles 1408352ada Add option for user to scale the amount of dynamic range compression which is 
applied by the audio decoder, and use that option in the AC3 decoder.

Originally committed as revision 11280 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-20 00:55:08 +00:00
Justin Ruggles 03726b7042 Skip dialog normalization. It shouldn't be used by the decoder, and there is 
not currently a clean way to pass the value to the user.

Originally committed as revision 11246 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-17 01:09:00 +00:00
Justin Ruggles 224bc440b2 Revert commit made in revision 11228. I'm getting some strange results in the 
downmixed output that I can't quite figure out.

Originally committed as revision 11245 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-17 01:03:19 +00:00
Justin Ruggles b40211ff67 downmix before the IMDCT if no block switching is used 
Originally committed as revision 11228 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-16 04:25:50 +00:00
Andreas Öman 6708eefe55 Make AC3 decoder honor avctx->request_channels 
Originally committed as revision 11220 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-15 07:00:19 +00:00
Justin Ruggles e2270b4e1e cosmetics: rename ac3 decoder variables 
Originally committed as revision 11197 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-09 03:28:10 +00:00
Justin Ruggles e59cc20593 cosmetics: rename common ac3 variables 
Originally committed as revision 11196 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-09 03:27:14 +00:00
Justin Ruggles 5ce2134258 cosmetics: rename ac3 bit allocation variables 
Originally committed as revision 11194 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-09 03:23:04 +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 56cc85a068 Misc spelling fixes, prefer American over British English. 
Originally committed as revision 11126 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-12-02 15:43:08 +00:00
Justin Ruggles a135bea507 skip incomplete frames 
Originally committed as revision 10497 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-15 02:44:28 +00:00
Justin Ruggles 3df880934e better AC3 header error reporting 
Originally committed as revision 10496 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-15 02:41:24 +00:00
Justin Ruggles d5b7144e1f fix random dithering of zero-bit mantissas 
Originally committed as revision 10495 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-15 00:43:40 +00:00
Justin Ruggles bfcf690c68 cosmetics: rename variables. tbl->tab for consistency with other AC3 tables 
Originally committed as revision 10494 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-15 00:19:21 +00:00
Justin Ruggles 396a6ee50e fix decoding of DolbyNet AC3 
Originally committed as revision 10493 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-15 00:00:57 +00:00
Justin Ruggles 222ae64c3d cosmetics: vertical alignment 
Originally committed as revision 10002 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-09 00:39:35 +00:00
Justin Ruggles 5066f51502 comments modification: add, clean up, Doxygenize, and reword 
Originally committed as revision 10001 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-09 00:36:49 +00:00
Justin Ruggles f5cefb21d5 cosmetics: blank lines, remove some comments 
Originally committed as revision 9955 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-05 21:48:46 +00:00
Justin Ruggles 82758fd690 add pointer to the parent context for use with av_log() 
Originally committed as revision 9954 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-05 21:34:33 +00:00
Justin Ruggles 77416325cb use array for dynamic range scaling factors 
Originally committed as revision 9953 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-05 21:10:09 +00:00
Justin Ruggles 01f354531d add dialogue normalization 
Originally committed as revision 9948 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-05 19:36:35 +00:00
Justin Ruggles 3bbb0bf82c add support for downmixing to stereo or mono 
Originally committed as revision 9916 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 22:32:17 +00:00
Justin Ruggles 4e09232070 use dsputil for float to signed 16-bit sample conversion 
Originally committed as revision 9914 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 20:59:22 +00:00
Justin Ruggles 775369e028 cosmetics: indentation 
Originally committed as revision 9911 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 20:32:57 +00:00
Justin Ruggles 7b4076a777 consolidate decoding of lfe and coupling channels with decoding of full-bandwidth channels. 
Originally committed as revision 9910 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 19:19:48 +00:00
Justin Ruggles 5e61de0cc1 there are only 4 rematrixing bands 
Originally committed as revision 9908 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 15:01:21 +00:00
Justin Ruggles 75b9b0369b cosmetics: use more appropriate names for iterator variables. 
Originally committed as revision 9907 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 13:52:56 +00:00
Justin Ruggles 8e2eb3b674 move some variables to a more local scope. 
Originally committed as revision 9905 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 13:30:37 +00:00
Justin Ruggles 0bff58a59a make exponent decoding consistent (prepare for merging coupling and lfe code with normal channel code). 
Originally committed as revision 9904 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 13:26:46 +00:00
Justin Ruggles eaf84d970f cosmetics: use braces when it makes the code easier to read. 
Originally committed as revision 9893 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 12:04:41 +00:00
Justin Ruggles fc59010bbf change AC3DecodeContext variable to local variable 
Originally committed as revision 9892 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 11:55:10 +00:00
Justin Ruggles 6d96d626c6 use array instead of bitmask 
Originally committed as revision 9891 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-08-04 11:39:47 +00:00
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