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325 Commits

Author SHA1 Message Date
Justin Ruggles
16c91d2b23 remove unneeded assignment in inner loop. rematrixing bands are contiguous. 
Originally committed as revision 20089 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-30 01:09:57 +00:00
Justin Ruggles
8b11b44ea7 Rearrange loop structure for approx. 35-50% faster calc_transform_coeffs_cpl() 
depending on content.

Originally committed as revision 20055 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-27 07:16:51 +00:00
Justin Ruggles
3b6c5ad2f6 Move variable declaration to inside of loop. 
Originally committed as revision 20053 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-27 06:38:57 +00:00
Justin Ruggles
025873738f Cosmetics: Rename some variables. 
Originally committed as revision 20052 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-27 06:38:13 +00:00
Justin Ruggles
b5f4639b13 Simplify coupling band loop. 
Originally committed as revision 20051 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-27 06:33:23 +00:00
Justin Ruggles
a521aadfe8 cosmetics: reindent after last commit 
Originally committed as revision 19589 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-08-05 02:31:13 +00:00
Justin Ruggles
25dcd1823c ac3dec: simplify zero-bit mantissa dithering by calculating it 
conditionally during mantissa decoding, then only removing it from the
coupling range for coupled channels which do not use dithering.

Originally committed as revision 19588 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-08-05 02:30:34 +00:00
Justin Ruggles
b972c06a8f cosmetics: indentation and line wrap 
Originally committed as revision 19587 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-08-05 01:58:28 +00:00
Justin Ruggles
c36ea0600c cosmetics after last commit 
Originally committed as revision 19586 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-08-05 01:14:28 +00:00
Justin Ruggles
3f93716809 Modify decode_band_structure() so that the actual band structure is only 
used within the function.  This removes the need to have the coupling band
structure stored in the AC3DecodeContext.

Originally committed as revision 19585 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-08-05 01:13:42 +00:00
Justin Ruggles
603139022d Use coupling band sizes instead of coupling band structure when 
calculating coupling transform coefficients.

Originally committed as revision 19584 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-08-05 01:00:41 +00:00
Justin Ruggles
eb98cdfa8d cosmetics: add more detailed information to the documentation for 
decode_band_structure().

Originally committed as revision 19577 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-08-03 22:05:31 +00:00
Diego Biurrun
d15153244f refactoring: properly separate AC-3 and E-AC-3 code 
Originally committed as revision 19501 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-07-23 02:33:25 +00:00
Diego Biurrun
89547cfb36 Make sure that eac3_decoder only gets enabled when CONFIG_EAC3_DECODER is set. 
Originally committed as revision 19500 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-07-23 00:15:23 +00:00
Ronald S. Bultje
ce863d7f36 Rename ff_log_missing_feature() to av_log_missing_feature(). 
Originally committed as revision 19294 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-06-29 19:07:04 +00:00
Justin Ruggles
ae04de316f eac3dec: revert commit r18860. keep the AHT IDCT 24-bit. will make AHT GAQ 
dequantization 24-bit in a separate commit.

Originally committed as revision 18887 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-21 00:09:23 +00:00
Diego Biurrun
1754fe4d30 The AC-3 decoder is now LGPL. Exchange the license header and change references 
in the build system and documentation that mark it as GPL.

Originally committed as revision 18876 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-19 22:58:09 +00:00
Jason Garrett-Glaser
d869a460db LGPL version of ac3_decode_transform_coeffs_ch, ~12.4% faster. 
Originally committed as revision 18875 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-19 21:29:21 +00:00
Justin Ruggles
9a7a71ed4c eac3dec: use 16-bit pre-mantissas instead of 24-bit in AHT decoding. it is 
simpler and also fixes a bug in GAQ dequantization.

Originally committed as revision 18860 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-17 06:53:24 +00:00
Justin Ruggles
1ac7d1ac50 ac3dec: fix coupling range check. the start subband must be less than 
the end subband.

Originally committed as revision 18857 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-16 17:02:44 +00:00
Siarhei Siamashka
7d485f165f Support for getting (i)MDCT output multiplied by a constant scaling factor. 
Scaling (i)MDCT output has no runtime overhead and can be used to improve
performance of audio codecs. All the changes are only needed in
'ff_mdct_init' function and slow down initialization a bit.

Originally committed as revision 18855 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-16 14:17:08 +00:00
Justin Ruggles
778bc09bbe cosmetics: line wrap and vertical alignment 
Originally committed as revision 18752 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-06 01:48:14 +00:00
Justin Ruggles
396b73c7f7 ac3dec: Remove unneeded context variable, num_cpl_subbands. It is also 
not needed for spectral extension or enhanced coupling since it is
redundant information, so I am removing it from decode_band_structure()
as well.

Originally committed as revision 18751 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-06 01:47:34 +00:00
Justin Ruggles
52dc3fc83d cosmetics: indentation after last commit 
Originally committed as revision 18750 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-05 23:39:10 +00:00
Justin Ruggles
13ec942869 ac3dec: move channel remapping to outside of block loop 
Originally committed as revision 18749 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-05 23:38:12 +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
Thilo Borgmann
7a00bbad21 Implement avcodec_decode_video2(), _audio3() and _subtitle2() which takes an 
AVPacket argument rather than a const uint8_t *buf + int buf_size. This allows
passing of packet-specific flags from demuxer to decoder, such as the keyframe
flag, which appears necessary to playback corePNG P-frames.

Patch by Thilo Borgmann thilo.borgmann googlemail com, see also the thread
"Google Summer of Code participation" on the mailinglist.

Originally committed as revision 18351 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-04-07 15:59:50 +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
Alex Converse
11d6f38cc9 Factorise enum of AC3 error types to be usable by AAC in the ADTS patch that 
will follow

Patch by Alex Converse ( alex converse gmail com )

Originally committed as revision 16479 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-07 18:10:10 +00:00
Stefano Sabatini
dbbec0c2f2 Make av_log_missing_feature an internal function, and change its name 
to ff_log_missing_feature.

Originally committed as revision 16037 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-08 21:21:38 +00:00
Justin Ruggles
20e047262f cosmetics: alignment after last commit 
Originally committed as revision 16035 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-08 03:15:10 +00:00
Justin Ruggles
72a6244b5d ac3: detect dba errors and prevent writing past end of array 
Originally committed as revision 16034 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-08 03:13:20 +00:00
Justin Ruggles
2ceccf045c ac3dec: simplify exponent bounds checking 
Originally committed as revision 16022 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-06 16:33:16 +00:00
Justin Ruggles
96f229d6c0 ac3dec: unroll inner loop in exponent decoding. 46% faster decode_exponents(). 
Originally committed as revision 16018 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-06 15:46:23 +00:00
Justin Ruggles
806703243e cosmetics: vertical alignment 
Originally committed as revision 16017 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-06 15:38:21 +00:00
Justin Ruggles
1cdd567f31 cosmetics: reindent after last commit 
Originally committed as revision 16016 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-06 15:37:04 +00:00
Justin Ruggles
ce7d842fa6 ac3dec: detect out-of-range exponents 
Originally committed as revision 16015 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-06 15:36:23 +00:00
Justin Ruggles
f23dc1e1f9 silence gcc warning: ‘n_bands’ may be used uninitialized 
Originally committed as revision 15999 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-04 02:56:25 +00:00
Justin Ruggles
75b53b2123 ac3dec: use uint8_t for band sizes 
Originally committed as revision 15998 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-04 02:51:39 +00:00
Justin Ruggles
af2272b209 ac3dec: skip decoding and use error concealment for remaining blocks in 
the frame after an error occurs.

Originally committed as revision 15987 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-03 03:34:31 +00:00
Justin Ruggles
e202cc2580 revert r15812 (E-AC-3 Spectral Extension) pending further review 
Originally committed as revision 15818 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 22:38:38 +00:00
Justin Ruggles
3f3ca7ac07 cosmetics: vertical alignment 
Originally committed as revision 15815 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:18:28 +00:00
Justin Ruggles
c763f86728 silence a gcc warning about using an uninitialized variable 
Originally committed as revision 15814 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:18:24 +00:00
Justin Ruggles
66561189a1 cosmetics: indentation 
Originally committed as revision 15813 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:18:18 +00:00
Justin Ruggles
0cc51734b2 add support for spectral extension 
Originally committed as revision 15812 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:18:13 +00:00
Justin Ruggles
0c5d750df9 add a generic function to decode banding structure for coupling, spectral 
extension, or enhanced coupling

Originally committed as revision 15811 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:18:07 +00:00
Justin Ruggles
6c6f927289 add a line break in error message text 
Originally committed as revision 15810 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:18:01 +00:00
Justin Ruggles
6ee6d068f7 simplify decoding of coupling frequency range 
Originally committed as revision 15809 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:17:56 +00:00
Justin Ruggles
24834c1928 cosmetics: rename two variables 
Originally committed as revision 15808 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:17:50 +00:00
Michael Niedermayer
047599a4ba Rename error_resilience to error_recognition. 
Originally committed as revision 15270 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-08 18:18:49 +00:00
Justin Ruggles
2988c93d94 create a separate codec_id for E-AC-3 
Originally committed as revision 15143 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-01 14:33:54 +00:00
Justin Ruggles
1f6a594de4 turn on E-AC-3 decoding support and update the Changelog 
Originally committed as revision 15103 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-31 03:08:18 +00:00
Justin Ruggles
f2e4eb62dc cosmetics: indentation 
Originally committed as revision 15089 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-31 02:32:08 +00:00
Justin Ruggles
8dfc56ec32 commit more OKed parts of the E-AC-3 decoder 
Originally committed as revision 15087 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-31 02:30:09 +00:00
Justin Ruggles
225c30429d commit more OKed parts of the E-AC-3 decoder 
Originally committed as revision 15068 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-30 23:19:23 +00:00
Justin Ruggles
ea364c74a0 cosmetics: update comment about dithering 
Originally committed as revision 15051 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-30 17:51:03 +00:00
Justin Ruggles
e522bd49c8 cosmetics: change another "get" to "decode" 
Originally committed as revision 15014 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-29 00:09:47 +00:00
Justin Ruggles
164e169fef cosmetics: change "get" to "decode" 
Originally committed as revision 15013 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-29 00:06:43 +00:00
Justin Ruggles
86662b1c89 cosmetics: indentation 
Originally committed as revision 15012 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-28 23:16:21 +00:00
Justin Ruggles
260e09305b remove unneeded variable, dither_all 
Originally committed as revision 15011 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-28 23:04:15 +00:00
Justin Ruggles
aec0407faf cosmetics: indent after last commit 
Originally committed as revision 15001 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-27 23:23:54 +00:00
Justin Ruggles
6b4bfed965 do not read exponent strategies from each block for E-AC-3 since they are in the header 
Originally committed as revision 15000 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-27 23:11:05 +00:00
Justin Ruggles
0ffea2439b copy default coupling band structure from table to decoding context (used for E-AC-3) 
Originally committed as revision 14990 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-27 01:40:46 +00:00
Justin Ruggles
e43b29ab26 add more OKed parts of the E-AC-3 decoder: structural changes to support AHT mode mantissa decoding 
Originally committed as revision 14989 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-27 01:36:20 +00:00
Justin Ruggles
6a68105e2b cosmetics: rename some functions from *get_* to *decode_* 
Originally committed as revision 14988 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-27 01:24:43 +00:00
Justin Ruggles
63d72fb167 fix decoding of coupling leak info for normal AC-3 
Originally committed as revision 14913 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-23 03:30:08 +00:00
Justin Ruggles
0569993ea4 cosmetics: indentation 
Originally committed as revision 14911 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-23 01:55:52 +00:00
Justin Ruggles
6fafb0202a add some approved parts of the E-AC-3 decoder 
Originally committed as revision 14910 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-23 01:51:42 +00:00
Justin Ruggles
ab2a942ad8 cosmetics: indentation 
Originally committed as revision 14863 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-20 01:02:32 +00:00
Justin Ruggles
bf09b550e6 commit the OKed parts of the E-AC-3 decoder 
Originally committed as revision 14860 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-20 00:32:17 +00:00
Justin Ruggles
e630027686 get data size based on the actual data array instead of coding-in the calculation 
Originally committed as revision 14859 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-20 00:15:27 +00:00
Justin Ruggles
8e33132bab rename AC3_MAX_FRAME_SIZE to AC3_FRAME_BUFFER_SIZE and increase the size 
Originally committed as revision 14858 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-20 00:08:59 +00:00
Justin Ruggles
46dd2738ae remove some unneeded header includes 
Originally committed as revision 14819 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-17 19:56:28 +00:00
Justin Ruggles
ec0350c983 use LFG instead of Mersenne Twister for AC-3 PRNG 
Originally committed as revision 14815 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-17 17:41:48 +00:00
Justin Ruggles
38c1a5c4d9 update my email address to one which does not depend on my service provider 
Originally committed as revision 14797 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-16 22:42:59 +00:00
Loren Merritt
911e21a306 simd int->float 
20% faster ac3 if downmixing, 15% if not

Originally committed as revision 14743 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-13 23:35:40 +00:00
Loren Merritt
ac2e556456 simd downmix 
13% faster ac3 if downmixing

Originally committed as revision 14742 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-13 23:33:48 +00:00
Loren Merritt
45d9d61889 don't mark the delayed samples for upmixing if they haven't been downmixed 
Originally committed as revision 14741 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-13 23:30:53 +00:00
Loren Merritt
3b6516f7e7 oops, non-normalized downmix to mono contaminated add_bias for non-simd float-to-int. 
Originally committed as revision 14740 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-13 23:30:28 +00:00
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