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295 Commits

Author SHA1 Message Date
Loren Merritt
557ac0c448 optimize ac3_downmix. 
1.3x faster 5.1->stereo, 1.9x faster 5.1->mono.

Originally committed as revision 14719 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-12 23:45:46 +00:00
Loren Merritt
72745cff20 use float_to_int16_interleave in ac3 
Originally committed as revision 14706 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-12 03:01:17 +00:00
Loren Merritt
916d5d6c32 use imdct_half in ac3 
Originally committed as revision 14705 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-12 01:30:24 +00:00
Loren Merritt
d46ac5bfde mdct wrapper function to match fft 
Originally committed as revision 14703 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-12 00:38:30 +00:00
Loren Merritt
0a570e826d remove mdct tmp buffer 
Originally committed as revision 14702 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-12 00:36:36 +00:00
Justin Ruggles
5e3e40756e cosmetics: use a better function name than uncouple_channels() 
Originally committed as revision 14614 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-05 01:49:01 +00:00
Justin Ruggles
022845ed05 cosmetics: change function name and comments to refer to block decoding 
instead of block parsing

Originally committed as revision 14613 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-05 01:31:40 +00:00
Justin Ruggles
ba7f712c21 remove unneeded local variable 
Originally committed as revision 14547 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-05 00:32:27 +00:00
Justin Ruggles
55aff0d901 Read bitstream parameters for E-AC-3 streams before returning an error. 
Originally committed as revision 14528 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-03 22:29:06 +00:00
Justin Ruggles
602116df9b Hardcode the table for ungrouping 3 values in 5 bits. It will be reused by 
the E-AC-3 decoder.

Originally committed as revision 14527 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-03 21:42:43 +00:00
Justin Ruggles
7417120b6f use the same table for ungrouping exponents and bap=2 mantissas 
Originally committed as revision 14525 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-03 19:24:04 +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
Peter Ross
fd76c37fd9 Modify all codecs to report their supported input and output sample format(s). 
Originally committed as revision 14482 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-31 10:47:31 +00:00
Justin Ruggles
4760aec6a0 read 'coupling in use' parameter from bitstream into decoder context first, 
then copy to the local variable.

Originally committed as revision 14311 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-19 22:01:46 +00:00
Justin Ruggles
7645da9194 cosmetic: use hex value instead of decimal to show relation to 0x7FFFFF 
Originally committed as revision 14290 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-19 02:54:54 +00:00
Stefano Sabatini
fe4bf37455 Make AVCodec long_names definition conditional depending on CONFIG_SMALL. 
Originally committed as revision 13759 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-12 21:50:13 +00:00
Justin Ruggles
227322b837 move rematrixing band table to ac3dec_data.c 
Originally committed as revision 13716 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-08 21:09:02 +00:00
Justin Ruggles
4397d95ce0 split up header parsing function 
Originally committed as revision 13705 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-07 22:30:51 +00:00
Justin Ruggles
da04be10a2 store exp_strategy for all blocks in decode context 
Originally committed as revision 13704 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-07 22:30:47 +00:00
Justin Ruggles
54624396fc store cpl_in_use for all blocks in decode context 
Originally committed as revision 13703 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-07 22:30:43 +00:00
Justin Ruggles
58ce349f0a move the decode context and some macro constants to a new file, ac3dec.h 
Originally committed as revision 13697 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-07 22:30:16 +00:00
Justin Ruggles
30f71adc46 move mix level tables from parser to decoder. have parser read bitstream value instead of using an index to a table in the decoder. 
Originally committed as revision 13696 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-07 22:30:09 +00:00
Justin Ruggles
caf0fbc889 add more gain levels and adjust mix level tables accordingly. 
Originally committed as revision 13695 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-07 22:30:03 +00:00
Justin Ruggles
687671f03b pass bap table to ff_ac3_bit_alloc_calc_bap() 
Originally committed as revision 13694 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-07 22:29:54 +00:00
Justin Ruggles
4921bbbae5 cosmetics: indent 
Originally committed as revision 13692 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-07 22:29:38 +00:00
Justin Ruggles
aa5d6be8df skip unsupported frame types and substream id's 
Originally committed as revision 13691 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-07 22:29:27 +00:00
Justin Ruggles
be5f17b96b read frame type from header info into decode context 
Originally committed as revision 13690 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-07 22:29:19 +00:00
Justin Ruggles
3596aa6fe6 get substreamid from ac3 parser 
Originally committed as revision 13689 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-07 22:29:11 +00:00
Justin Ruggles
6730e9f300 get the number of blocks from the ac3 parser and use in the ac3 decoder. 
Originally committed as revision 13688 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-07 22:29:03 +00:00
Justin Ruggles
7af26d14ac return error on frame sync error 
Originally committed as revision 13654 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-06-04 00:31:20 +00:00
Justin Ruggles
fb2b88a816 cosmetics: add a comment, remove a comment 
Originally committed as revision 13590 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-31 22:12:49 +00:00
Justin Ruggles
9b57545934 simplify 
Originally committed as revision 13589 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-31 22:12:01 +00:00
Justin Ruggles
6e74513a48 set lfe params at frame init instead of in every block 
Originally committed as revision 13588 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-31 21:57:45 +00:00
Justin Ruggles
b85a15fe73 only calculate number of exponent groups when exponents are not reused. 
Originally committed as revision 13587 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-31 21:53:31 +00:00
Justin Ruggles
aa148649a4 cosmetics: remove unneeded braces 
Originally committed as revision 13586 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-31 21:37:28 +00:00
Justin Ruggles
7e13b31c19 10l: cosmetics 
Originally committed as revision 13585 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-31 19:59:10 +00:00
Justin Ruggles
e25973a1fd new dba values requires running last 2 bit allocation stages 
Originally committed as revision 13584 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-31 19:56:54 +00:00
Justin Ruggles
ff5d419e2f get_transform_coeffs() never returns an error, so make the function and its children return void. 
Originally committed as revision 13582 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-31 16:04:41 +00:00
Justin Ruggles
fbe52e4188 use enum value for CRC error 
Originally committed as revision 13580 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-31 15:31:57 +00:00
Justin Ruggles
c78c6d6c58 move header error logging to after CRC check 
Originally committed as revision 13579 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-31 15:30:55 +00:00
Justin Ruggles
bd98e9e230 zero the upper frequencies of the correct coefficients 
Originally committed as revision 13452 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-27 00:43:39 +00:00
Justin Ruggles
eccba2bc4b safer solution for setting audio parameters 
Originally committed as revision 13402 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-25 20:02:24 +00:00
Justin Ruggles
cf03a8173a set audio parameters if frame header is ok, even if crc fails 
Originally committed as revision 13399 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-25 18:54:17 +00:00
Justin Ruggles
3336110acf cosmetics: indent 
Originally committed as revision 13398 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-25 18:06:01 +00:00
Justin Ruggles
ecfe94b294 add error concealment 
Originally committed as revision 13397 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-25 18:05:15 +00:00
Justin Ruggles
93a2c8c14f cosmetics: indent 
Originally committed as revision 13385 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-25 16:20:06 +00:00
Justin Ruggles
43ad93a4f1 10l: fix error in commit r13382 
Originally committed as revision 13384 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-25 16:19:44 +00:00
Justin Ruggles
82a591d8d1 add checks for missing information in the first block 
Originally committed as revision 13382 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-25 15:34:48 +00:00
Justin Ruggles
3af9131398 add check for invalid channel mode when coupling is used 
Originally committed as revision 13381 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-25 15:23:03 +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
Stefano Sabatini
162d4fc99d Add long names to AVCodec declarations. 
patch by Stefano Sabatini, stefano.sabatini-lala poste it

Originally committed as revision 13009 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-27 22:39:51 +00:00
Bartlomiej Wolowiec
55736cfbd2 change ff_ac3_parse_header() to take a GetBitContext instead of const char* 
Originally committed as revision 12922 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-22 11:14:01 +00:00
Bartlomiej Wolowiec
79b25a27b8 change name from stream type to frame type in AC3 code 
Originally committed as revision 12623 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-28 20:42:55 +00:00
Justin Ruggles
509fdb0b7e only allocate context input buffer if AVCodecContext.error_reslience is greater than 0. 
Originally committed as revision 12600 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-26 22:36:41 +00:00
Justin Ruggles
984ff38a2b cosmetics: indentation after last commit 
Originally committed as revision 12594 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-25 23:34:49 +00:00
Justin Ruggles
c33a196716 additional protection from segmentation faults and memory access errors by 
copying the input buffer to a local context buffer which is large enough to
hold the largest possible AC3 frame.

Originally committed as revision 12593 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-25 23:34:00 +00:00
Bartlomiej Wolowiec
4e6eeaf019 using stream type in eac3 parser 
Originally committed as revision 12570 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-24 21:25:49 +00:00
Zuxy Meng
98a6fff98c Apply 'cold' attribute to init/uninit functions in libavcodec 
Originally committed as revision 12525 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-21 03:11:20 +00:00
Justin Ruggles
98f6dfa653 make input buffer const, as it should be. fixes a warning. 
Originally committed as revision 12418 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-10 21:59:30 +00:00
Justin Ruggles
38dae9c3a6 downmix before imdct unless different size transforms are used. about 20% 
faster 5.1-to-stereo downmixing.

Originally committed as revision 12397 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-09 17:05:19 +00:00
Justin Ruggles
d8870f120e use scale factor instead of sum for downmix level adjustment. avoids division 
inside downmix loop. 7% faster 5.1-to-stereo downmixing.

Originally committed as revision 12287 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-01 16:10:19 +00:00
Justin Ruggles
9d10e6e6c0 pre-calculate downmix coefficient sums. 2% faster 5.1-to-stereo downmixing. 
Originally committed as revision 12286 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-01 15:48:18 +00:00
Justin Ruggles
a4de6dd2c1 Use 24-bit fixed-point transform coefficients until just before MDCT. This 
gives 7% faster decoding on average.

Originally committed as revision 12284 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-03-01 04:39:39 +00:00
Robert Swain
3ed546fe52 Add variable alpha and size of half window for Kaiser-Bessel Derived window 
generation. Hard code Bessel I0 approximation iterations to 50.

See thread for discussion:
[FFmpeg-devel] [PATCH] Move Kaiser-Bessel Derived window to mdct.c
Started on the 2008/01/10

Originally committed as revision 11520 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-13 11:02:08 +00:00
Robert Swain
4eb7a735cb Make the Kaiser-Bessel window generator a common function 
Patch by Robert Swain, robert d swain a gmail d com

Originally committed as revision 11514 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-12 11:11:19 +00:00
Justin Ruggles
f34b221bd2 used defined name for testing error resilience level 
Originally committed as revision 11478 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-08 23:44:48 +00:00
Justin Ruggles
f0b3a7ba12 split out init of downmix coeffs into a separate function that can be called 
only when needed

Originally committed as revision 11441 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-07 00:18:02 +00:00
Justin Ruggles
82a6c4811a remove unneeded variable from AC3DecodeContext 
Originally committed as revision 11439 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-06 23:56:19 +00:00
Justin Ruggles
4bc829bb8f make sure that the last coupling band stops at the end of the coupling range 
Originally committed as revision 11438 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-06 23:33:30 +00:00
Justin Ruggles
b02fbf7536 fix phase flag processing for the case when coupling coordinates are reused 
for the right channel, but new for the left channel

Originally committed as revision 11436 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-06 20:15:24 +00:00
Justin Ruggles
646800f79c move E-AC3 header parsing to ff_ac3_parse_header() 
Originally committed as revision 11420 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-05 18:39:55 +00:00
Justin Ruggles
86ad4c7e1b remove unneeded variables from AC3HeaderInfo 
Originally committed as revision 11419 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-05 17:04:57 +00:00
Justin Ruggles
2816d32310 cosmetics: indentation 
Originally committed as revision 11416 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-05 15:23:39 +00:00
Justin Ruggles
95283c1701 check for request_channels at codec init 
Originally committed as revision 11415 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-01-05 15:22:53 +00:00
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
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