52dc3fc83d
cosmetics: indentation after last commit
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Originally committed as revision 18750 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-05-05 23:39:10 +00:00
13ec942869
ac3dec: move channel remapping to outside of block loop
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Originally committed as revision 18749 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-05-05 23:38:12 +00:00
bfeca7beb6
Add channel layout support to the AC-3 decoder and AC-3 parser.
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Originally committed as revision 18622 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-04-19 15:05:32 +00:00
95f3019a51
ac3dec: reorder output channels to SMPTE channel order
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Originally committed as revision 18542 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-04-17 08:43:04 +00:00
7a00bbad21
Implement avcodec_decode_video2(), _audio3() and _subtitle2() which takes an
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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
406792e7b0
cosmetics: Remove pointless period after copyright statement non-sentences.
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Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-19 15:46:40 +00:00
11d6f38cc9
Factorise enum of AC3 error types to be usable by AAC in the ADTS patch that
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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
dbbec0c2f2
Make av_log_missing_feature an internal function, and change its name
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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
20e047262f
cosmetics: alignment after last commit
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Originally committed as revision 16035 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-08 03:15:10 +00:00
72a6244b5d
ac3: detect dba errors and prevent writing past end of array
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Originally committed as revision 16034 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-08 03:13:20 +00:00
2ceccf045c
ac3dec: simplify exponent bounds checking
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Originally committed as revision 16022 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-06 16:33:16 +00:00
96f229d6c0
ac3dec: unroll inner loop in exponent decoding. 46% faster decode_exponents().
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Originally committed as revision 16018 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-06 15:46:23 +00:00
806703243e
cosmetics: vertical alignment
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Originally committed as revision 16017 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-06 15:38:21 +00:00
1cdd567f31
cosmetics: reindent after last commit
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Originally committed as revision 16016 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-06 15:37:04 +00:00
ce7d842fa6
ac3dec: detect out-of-range exponents
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Originally committed as revision 16015 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-06 15:36:23 +00:00
f23dc1e1f9
silence gcc warning: ‘n_bands’ may be used uninitialized
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Originally committed as revision 15999 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-04 02:56:25 +00:00
75b53b2123
ac3dec: use uint8_t for band sizes
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Originally committed as revision 15998 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-04 02:51:39 +00:00
af2272b209
ac3dec: skip decoding and use error concealment for remaining blocks in
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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
e202cc2580
revert r15812 (E-AC-3 Spectral Extension) pending further review
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Originally committed as revision 15818 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-11-13 22:38:38 +00:00
3f3ca7ac07
cosmetics: vertical alignment
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Originally committed as revision 15815 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-11-13 03:18:28 +00:00
c763f86728
silence a gcc warning about using an uninitialized variable
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Originally committed as revision 15814 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-11-13 03:18:24 +00:00
66561189a1
cosmetics: indentation
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Originally committed as revision 15813 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-11-13 03:18:18 +00:00
0cc51734b2
add support for spectral extension
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Originally committed as revision 15812 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-11-13 03:18:13 +00:00
0c5d750df9
add a generic function to decode banding structure for coupling, spectral
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extension, or enhanced coupling
Originally committed as revision 15811 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-11-13 03:18:07 +00:00
6c6f927289
add a line break in error message text
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Originally committed as revision 15810 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-11-13 03:18:01 +00:00
6ee6d068f7
simplify decoding of coupling frequency range
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Originally committed as revision 15809 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-11-13 03:17:56 +00:00
24834c1928
cosmetics: rename two variables
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Originally committed as revision 15808 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-11-13 03:17:50 +00:00
047599a4ba
Rename error_resilience to error_recognition.
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Originally committed as revision 15270 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-09-08 18:18:49 +00:00
2988c93d94
create a separate codec_id for E-AC-3
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Originally committed as revision 15143 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-09-01 14:33:54 +00:00
1f6a594de4
turn on E-AC-3 decoding support and update the Changelog
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Originally committed as revision 15103 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-31 03:08:18 +00:00
f2e4eb62dc
cosmetics: indentation
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Originally committed as revision 15089 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-31 02:32:08 +00:00
8dfc56ec32
commit more OKed parts of the E-AC-3 decoder
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Originally committed as revision 15087 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-31 02:30:09 +00:00
225c30429d
commit more OKed parts of the E-AC-3 decoder
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Originally committed as revision 15068 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-30 23:19:23 +00:00
ea364c74a0
cosmetics: update comment about dithering
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Originally committed as revision 15051 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-30 17:51:03 +00:00
e522bd49c8
cosmetics: change another "get" to "decode"
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Originally committed as revision 15014 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-29 00:09:47 +00:00
164e169fef
cosmetics: change "get" to "decode"
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Originally committed as revision 15013 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-29 00:06:43 +00:00
86662b1c89
cosmetics: indentation
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Originally committed as revision 15012 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-28 23:16:21 +00:00
260e09305b
remove unneeded variable, dither_all
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Originally committed as revision 15011 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-28 23:04:15 +00:00
aec0407faf
cosmetics: indent after last commit
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Originally committed as revision 15001 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-27 23:23:54 +00:00
6b4bfed965
do not read exponent strategies from each block for E-AC-3 since they are in the header
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Originally committed as revision 15000 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-27 23:11:05 +00:00
0ffea2439b
copy default coupling band structure from table to decoding context (used for E-AC-3)
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Originally committed as revision 14990 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-27 01:40:46 +00:00
e43b29ab26
add more OKed parts of the E-AC-3 decoder: structural changes to support AHT mode mantissa decoding
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Originally committed as revision 14989 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-27 01:36:20 +00:00
6a68105e2b
cosmetics: rename some functions from *get_* to *decode_*
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Originally committed as revision 14988 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-27 01:24:43 +00:00
63d72fb167
fix decoding of coupling leak info for normal AC-3
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Originally committed as revision 14913 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-23 03:30:08 +00:00
0569993ea4
cosmetics: indentation
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Originally committed as revision 14911 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-23 01:55:52 +00:00
6fafb0202a
add some approved parts of the E-AC-3 decoder
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Originally committed as revision 14910 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-23 01:51:42 +00:00
ab2a942ad8
cosmetics: indentation
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Originally committed as revision 14863 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-20 01:02:32 +00:00
bf09b550e6
commit the OKed parts of the E-AC-3 decoder
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Originally committed as revision 14860 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-20 00:32:17 +00:00
e630027686
get data size based on the actual data array instead of coding-in the calculation
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Originally committed as revision 14859 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-20 00:15:27 +00:00
8e33132bab
rename AC3_MAX_FRAME_SIZE to AC3_FRAME_BUFFER_SIZE and increase the size
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Originally committed as revision 14858 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-20 00:08:59 +00:00
46dd2738ae
remove some unneeded header includes
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Originally committed as revision 14819 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-17 19:56:28 +00:00
ec0350c983
use LFG instead of Mersenne Twister for AC-3 PRNG
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Originally committed as revision 14815 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-17 17:41:48 +00:00
38c1a5c4d9
update my email address to one which does not depend on my service provider
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Originally committed as revision 14797 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-16 22:42:59 +00:00
911e21a306
simd int->float
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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
ac2e556456
simd downmix
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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
45d9d61889
don't mark the delayed samples for upmixing if they haven't been downmixed
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Originally committed as revision 14741 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-13 23:30:53 +00:00
3b6516f7e7
oops, non-normalized downmix to mono contaminated add_bias for non-simd float-to-int.
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Originally committed as revision 14740 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-13 23:30:28 +00:00
557ac0c448
optimize ac3_downmix.
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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
72745cff20
use float_to_int16_interleave in ac3
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Originally committed as revision 14706 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-12 03:01:17 +00:00
916d5d6c32
use imdct_half in ac3
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Originally committed as revision 14705 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-12 01:30:24 +00:00
d46ac5bfde
mdct wrapper function to match fft
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Originally committed as revision 14703 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-12 00:38:30 +00:00
0a570e826d
remove mdct tmp buffer
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Originally committed as revision 14702 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-12 00:36:36 +00:00
5e3e40756e
cosmetics: use a better function name than uncouple_channels()
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Originally committed as revision 14614 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-05 01:49:01 +00:00
022845ed05
cosmetics: change function name and comments to refer to block decoding
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instead of block parsing
Originally committed as revision 14613 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-05 01:31:40 +00:00
ba7f712c21
remove unneeded local variable
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Originally committed as revision 14547 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-05 00:32:27 +00:00
55aff0d901
Read bitstream parameters for E-AC-3 streams before returning an error.
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Originally committed as revision 14528 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-03 22:29:06 +00:00
602116df9b
Hardcode the table for ungrouping 3 values in 5 bits. It will be reused by
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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
7417120b6f
use the same table for ungrouping exponents and bap=2 mantissas
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Originally committed as revision 14525 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-03 19:24:04 +00:00
14b7062829
cosmetics: make all references to AC-3 capitalized and hyphenated
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Originally committed as revision 14523 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-03 16:42:32 +00:00
fd76c37fd9
Modify all codecs to report their supported input and output sample format(s).
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Originally committed as revision 14482 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-07-31 10:47:31 +00:00
4760aec6a0
read 'coupling in use' parameter from bitstream into decoder context first,
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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
7645da9194
cosmetic: use hex value instead of decimal to show relation to 0x7FFFFF
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Originally committed as revision 14290 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-07-19 02:54:54 +00:00
fe4bf37455
Make AVCodec long_names definition conditional depending on CONFIG_SMALL.
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Originally committed as revision 13759 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-12 21:50:13 +00:00
227322b837
move rematrixing band table to ac3dec_data.c
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Originally committed as revision 13716 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-08 21:09:02 +00:00
4397d95ce0
split up header parsing function
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Originally committed as revision 13705 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-07 22:30:51 +00:00
da04be10a2
store exp_strategy for all blocks in decode context
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Originally committed as revision 13704 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-07 22:30:47 +00:00
54624396fc
store cpl_in_use for all blocks in decode context
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Originally committed as revision 13703 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-07 22:30:43 +00:00
58ce349f0a
move the decode context and some macro constants to a new file, ac3dec.h
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Originally committed as revision 13697 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-07 22:30:16 +00:00
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.
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Originally committed as revision 13696 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-07 22:30:09 +00:00
caf0fbc889
add more gain levels and adjust mix level tables accordingly.
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Originally committed as revision 13695 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-07 22:30:03 +00:00
687671f03b
pass bap table to ff_ac3_bit_alloc_calc_bap()
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Originally committed as revision 13694 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-07 22:29:54 +00:00
4921bbbae5
cosmetics: indent
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Originally committed as revision 13692 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-07 22:29:38 +00:00
aa5d6be8df
skip unsupported frame types and substream id's
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Originally committed as revision 13691 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-07 22:29:27 +00:00
be5f17b96b
read frame type from header info into decode context
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Originally committed as revision 13690 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-07 22:29:19 +00:00
3596aa6fe6
get substreamid from ac3 parser
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Originally committed as revision 13689 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-07 22:29:11 +00:00
6730e9f300
get the number of blocks from the ac3 parser and use in the ac3 decoder.
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Originally committed as revision 13688 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-07 22:29:03 +00:00
7af26d14ac
return error on frame sync error
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Originally committed as revision 13654 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-06-04 00:31:20 +00:00
fb2b88a816
cosmetics: add a comment, remove a comment
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Originally committed as revision 13590 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-31 22:12:49 +00:00
9b57545934
simplify
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Originally committed as revision 13589 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-31 22:12:01 +00:00
6e74513a48
set lfe params at frame init instead of in every block
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Originally committed as revision 13588 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-31 21:57:45 +00:00
b85a15fe73
only calculate number of exponent groups when exponents are not reused.
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Originally committed as revision 13587 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-31 21:53:31 +00:00
aa148649a4
cosmetics: remove unneeded braces
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Originally committed as revision 13586 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-31 21:37:28 +00:00
7e13b31c19
10l: cosmetics
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Originally committed as revision 13585 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-31 19:59:10 +00:00
e25973a1fd
new dba values requires running last 2 bit allocation stages
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Originally committed as revision 13584 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-31 19:56:54 +00:00
ff5d419e2f
get_transform_coeffs() never returns an error, so make the function and its children return void.
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Originally committed as revision 13582 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-31 16:04:41 +00:00
fbe52e4188
use enum value for CRC error
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Originally committed as revision 13580 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-31 15:31:57 +00:00
c78c6d6c58
move header error logging to after CRC check
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Originally committed as revision 13579 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-31 15:30:55 +00:00
bd98e9e230
zero the upper frequencies of the correct coefficients
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Originally committed as revision 13452 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-27 00:43:39 +00:00
eccba2bc4b
safer solution for setting audio parameters
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Originally committed as revision 13402 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-25 20:02:24 +00:00
cf03a8173a
set audio parameters if frame header is ok, even if crc fails
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Originally committed as revision 13399 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-25 18:54:17 +00:00
3336110acf
cosmetics: indent
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Originally committed as revision 13398 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-25 18:06:01 +00:00
ecfe94b294
add error concealment
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Originally committed as revision 13397 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-25 18:05:15 +00:00
93a2c8c14f
cosmetics: indent
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Originally committed as revision 13385 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-25 16:20:06 +00:00
43ad93a4f1
10l: fix error in commit r13382
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Originally committed as revision 13384 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-25 16:19:44 +00:00
82a591d8d1
add checks for missing information in the first block
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Originally committed as revision 13382 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-25 15:34:48 +00:00
3af9131398
add check for invalid channel mode when coupling is used
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Originally committed as revision 13381 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-25 15:23:03 +00:00
245976da2a
Use full path for #includes from another directory.
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Originally committed as revision 13098 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-05-09 11:56:36 +00:00
162d4fc99d
Add long names to AVCodec declarations.
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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
55736cfbd2
change ff_ac3_parse_header() to take a GetBitContext instead of const char*
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Originally committed as revision 12922 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-04-22 11:14:01 +00:00
79b25a27b8
change name from stream type to frame type in AC3 code
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Originally committed as revision 12623 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-28 20:42:55 +00:00
509fdb0b7e
only allocate context input buffer if AVCodecContext.error_reslience is greater than 0.
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Originally committed as revision 12600 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-26 22:36:41 +00:00
984ff38a2b
cosmetics: indentation after last commit
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Originally committed as revision 12594 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-25 23:34:49 +00:00
c33a196716
additional protection from segmentation faults and memory access errors by
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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
4e6eeaf019
using stream type in eac3 parser
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Originally committed as revision 12570 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-24 21:25:49 +00:00
98a6fff98c
Apply 'cold' attribute to init/uninit functions in libavcodec
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Originally committed as revision 12525 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-21 03:11:20 +00:00
98f6dfa653
make input buffer const, as it should be. fixes a warning.
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Originally committed as revision 12418 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-10 21:59:30 +00:00
38dae9c3a6
downmix before imdct unless different size transforms are used. about 20%
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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
d8870f120e
use scale factor instead of sum for downmix level adjustment. avoids division
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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
9d10e6e6c0
pre-calculate downmix coefficient sums. 2% faster 5.1-to-stereo downmixing.
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Originally committed as revision 12286 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-03-01 15:48:18 +00:00
a4de6dd2c1
Use 24-bit fixed-point transform coefficients until just before MDCT. This
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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
3ed546fe52
Add variable alpha and size of half window for Kaiser-Bessel Derived window
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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
4eb7a735cb
Make the Kaiser-Bessel window generator a common function
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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
f34b221bd2
used defined name for testing error resilience level
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Originally committed as revision 11478 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-08 23:44:48 +00:00
f0b3a7ba12
split out init of downmix coeffs into a separate function that can be called
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only when needed
Originally committed as revision 11441 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-07 00:18:02 +00:00
82a6c4811a
remove unneeded variable from AC3DecodeContext
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Originally committed as revision 11439 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-06 23:56:19 +00:00
4bc829bb8f
make sure that the last coupling band stops at the end of the coupling range
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Originally committed as revision 11438 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-06 23:33:30 +00:00
b02fbf7536
fix phase flag processing for the case when coupling coordinates are reused
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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
646800f79c
move E-AC3 header parsing to ff_ac3_parse_header()
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Originally committed as revision 11420 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-05 18:39:55 +00:00
86ad4c7e1b
remove unneeded variables from AC3HeaderInfo
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Originally committed as revision 11419 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-05 17:04:57 +00:00
2816d32310
cosmetics: indentation
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Originally committed as revision 11416 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-05 15:23:39 +00:00
95283c1701
check for request_channels at codec init
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Originally committed as revision 11415 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-05 15:22:53 +00:00
3abe5fbdc4
improve CRC API
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- 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
7564658bbc
cosmetics: indentation and add a TODO comment
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Originally committed as revision 11389 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-04 00:39:03 +00:00
471db688c6
only check ac3 crc if AVCodecContext.error_resilience > 0
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Originally committed as revision 11388 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-03 23:05:53 +00:00
d6939960d5
add crc check to ac3 decoder
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Originally committed as revision 11379 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-03 02:26:29 +00:00
12eaa3b760
simplify
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Originally committed as revision 11360 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-30 22:58:20 +00:00
b35c67e58b
pass an AC3DecodeContext to ac3_downmix() instead of multiple arguments
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Originally committed as revision 11359 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-30 22:28:17 +00:00
866181e5e8
cosmetics: rename sampling_rate to sample_rate
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Originally committed as revision 11358 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-30 21:26:30 +00:00
0345fade94
do not need to cast a (void *)
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Originally committed as revision 11357 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-30 21:24:49 +00:00
1b70d88b7a
cosmetics: vertical realignment after last commit
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Originally committed as revision 11356 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-30 21:09:08 +00:00
d802d7ca12
cosmetics: rename all AC3DecodeContext variables from ctx to s
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Originally committed as revision 11355 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-30 20:58:50 +00:00
23c8cb89c9
cosmetics: rename GetBitContext gb to gbc
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Originally committed as revision 11354 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-30 20:47:22 +00:00
005ab694ae
remove unused context variable
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Originally committed as revision 11353 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-30 03:10:18 +00:00
1408352ada
Add option for user to scale the amount of dynamic range compression which is
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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
03726b7042
Skip dialog normalization. It shouldn't be used by the decoder, and there is
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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
224bc440b2
Revert commit made in revision 11228. I'm getting some strange results in the
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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
b40211ff67
downmix before the IMDCT if no block switching is used
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Originally committed as revision 11228 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-16 04:25:50 +00:00
6708eefe55
Make AC3 decoder honor avctx->request_channels
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Originally committed as revision 11220 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-15 07:00:19 +00:00
e2270b4e1e
cosmetics: rename ac3 decoder variables
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Originally committed as revision 11197 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-09 03:28:10 +00:00
e59cc20593
cosmetics: rename common ac3 variables
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Originally committed as revision 11196 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-09 03:27:14 +00:00
5ce2134258
cosmetics: rename ac3 bit allocation variables
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Originally committed as revision 11194 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-09 03:23:04 +00:00
66ecf18e38
cosmetics: rename ac3 tables
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Originally committed as revision 11193 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-09 03:21:33 +00:00
56cc85a068
Misc spelling fixes, prefer American over British English.
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Originally committed as revision 11126 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-02 15:43:08 +00:00
a135bea507
skip incomplete frames
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Originally committed as revision 10497 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-09-15 02:44:28 +00:00
3df880934e
better AC3 header error reporting
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Originally committed as revision 10496 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-09-15 02:41:24 +00:00
d5b7144e1f
fix random dithering of zero-bit mantissas
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Originally committed as revision 10495 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-09-15 00:43:40 +00:00
bfcf690c68
cosmetics: rename variables. tbl->tab for consistency with other AC3 tables
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Originally committed as revision 10494 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-09-15 00:19:21 +00:00
396a6ee50e
fix decoding of DolbyNet AC3
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Originally committed as revision 10493 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-09-15 00:00:57 +00:00
222ae64c3d
cosmetics: vertical alignment
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Originally committed as revision 10002 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-09 00:39:35 +00:00
5066f51502
comments modification: add, clean up, Doxygenize, and reword
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Originally committed as revision 10001 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-09 00:36:49 +00:00
f5cefb21d5
cosmetics: blank lines, remove some comments
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Originally committed as revision 9955 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-05 21:48:46 +00:00
82758fd690
add pointer to the parent context for use with av_log()
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Originally committed as revision 9954 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-05 21:34:33 +00:00
77416325cb
use array for dynamic range scaling factors
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Originally committed as revision 9953 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-05 21:10:09 +00:00
01f354531d
add dialogue normalization
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Originally committed as revision 9948 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-05 19:36:35 +00:00
3bbb0bf82c
add support for downmixing to stereo or mono
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Originally committed as revision 9916 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 22:32:17 +00:00
4e09232070
use dsputil for float to signed 16-bit sample conversion
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Originally committed as revision 9914 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 20:59:22 +00:00
775369e028
cosmetics: indentation
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Originally committed as revision 9911 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 20:32:57 +00:00
7b4076a777
consolidate decoding of lfe and coupling channels with decoding of full-bandwidth channels.
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Originally committed as revision 9910 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 19:19:48 +00:00
5e61de0cc1
there are only 4 rematrixing bands
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Originally committed as revision 9908 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 15:01:21 +00:00
75b9b0369b
cosmetics: use more appropriate names for iterator variables.
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Originally committed as revision 9907 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 13:52:56 +00:00
8e2eb3b674
move some variables to a more local scope.
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Originally committed as revision 9905 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 13:30:37 +00:00
0bff58a59a
make exponent decoding consistent (prepare for merging coupling and lfe code with normal channel code).
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Originally committed as revision 9904 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 13:26:46 +00:00
eaf84d970f
cosmetics: use braces when it makes the code easier to read.
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Originally committed as revision 9893 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 12:04:41 +00:00
fc59010bbf
change AC3DecodeContext variable to local variable
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Originally committed as revision 9892 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 11:55:10 +00:00
6d96d626c6
use array instead of bitmask
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Originally committed as revision 9891 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 11:39:47 +00:00
3357ff338b
use table for converting dynamic range codes to scale factors
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Originally committed as revision 9889 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 03:27:05 +00:00
5aefe3ebef
use floating-point mantissa dequantization tables
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Originally committed as revision 9888 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 03:21:17 +00:00
04ac5cada1
cosmetics: indentation
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Originally committed as revision 9887 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 01:14:14 +00:00
60f07fadd3
dither zero-bit mantissas by default. remove dithering only if it's explicitly turned off.
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Originally committed as revision 9886 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 01:13:08 +00:00
d63f6fea50
simplify coefficient decoding
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Originally committed as revision 9884 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 00:12:23 +00:00
285bf28c67
merge decoding of coupling channel coefficients and regular channel coefficients
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Originally committed as revision 9883 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 00:04:17 +00:00
d7dc7ad05c
split out coupling coefficient reconstruction into a separate function
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Originally committed as revision 9882 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-03 23:53:53 +00:00
dfd57c366f
align array used in mdct. fixes segfault.
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Originally committed as revision 9848 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-01 01:13:58 +00:00
8b60bbbf5b
simplify stereo rematrixing
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Originally committed as revision 9824 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-29 00:58:32 +00:00
b6acc57f88
change 2 fields from context to local variables
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Originally committed as revision 9823 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-29 00:35:30 +00:00
8fbb368d2c
BLOCK_SIZE is not used properly, just use numbers instead to avoid confusion
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Originally committed as revision 9822 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-28 20:50:25 +00:00
7bfd22f25a
remove broken downmixing. will add new implementation later.
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Originally committed as revision 9821 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-28 19:33:19 +00:00
4611b64ec1
simplify snr offset and bit allocation
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Originally committed as revision 9784 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-24 02:08:27 +00:00
e9a3824880
only use sized data types when necessary
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Originally committed as revision 9783 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-24 01:43:47 +00:00
8f58a4c943
set bit allocation parameters directly instead of copying
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Originally committed as revision 9782 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-24 01:35:25 +00:00
e2cd6686fa
use enum value instead of numerical value for acmod
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Originally committed as revision 9781 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-23 22:47:49 +00:00
bc8edb7e53
use consistent data type for exponents. needs to be int8_t to pass to bit allocation.
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Originally committed as revision 9780 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-23 22:23:37 +00:00
878c40a137
change some bit masks to arrays
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Originally committed as revision 9779 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-23 22:16:15 +00:00
bec37145da
cosmetics: indentation
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Originally committed as revision 9774 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-21 17:03:30 +00:00
9fc1ab722e
Use shared AC-3 header parsing. Move some initializations to block parsing function.
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Originally committed as revision 9773 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-21 16:28:12 +00:00
9ef6039043
don't need to synchronize in the decoder. the parser does that already.
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Originally committed as revision 9772 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-21 13:56:04 +00:00
de34875c75
get rid of an ugly macro
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Originally committed as revision 9771 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-21 11:54:19 +00:00
614e9b2424
don't need to define ALT_BITSTREAM_READER
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Originally committed as revision 9752 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-19 02:21:14 +00:00
362664215d
update license header. add copyright for myself. correct and complete the statement about liba52.
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Originally committed as revision 9751 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-19 02:16:20 +00:00
3bb004fcda
revise comment for exponent decoding function
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Originally committed as revision 9750 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-19 02:09:58 +00:00
Justin Ruggles
Thilo Borgmann
Diego Biurrun
Alex Converse
Stefano Sabatini
Michael Niedermayer
Loren Merritt
Peter Ross
Bartlomiej Wolowiec
Zuxy Meng
Robert Swain
Aurelien Jacobs
Andreas Öman