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452 Commits

Author SHA1 Message Date
Reimar Döffinger
c9f6eab184 Detect byte-swapped AC-3 (aka DNET) and support decoding it directly. 
This allows the AC-3 decoder to be used directly with RealMedia
decoders that unlike the libavformat one do not byte-swap automatically.
Since the new code is only used in case we would fail directly otherwise
there should be no risk for regressions.
The "buf" pointer needs to be overwritten since otherwise the CRC check fails.
 2011-03-19 12:07:14 +01:00
Justin Ruggles
fe2ff6d247 Separate format conversion DSP functions from DSPContext. 
This will be beneficial for use with the audio conversion API without
requiring it to depend on all of dsputil.

Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit c73d99e672)
 2011-02-04 03:08:09 +01:00
Justin Ruggles
c73d99e672 Separate format conversion DSP functions from DSPContext. 
This will be beneficial for use with the audio conversion API without
requiring it to depend on all of dsputil.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-02-02 02:44:53 +00:00
Justin Ruggles
a8ae4e0e7b Remove unneeded add bias from 3 functions. 
DSPContext.vector_fmul_window()
DCADSPContext.lfe_fir()
SynthFilterContext.synth_filter_float()

Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 80ba1ddb58)
 2011-02-02 03:40:48 +01:00
Justin Ruggles
80ba1ddb58 Remove unneeded add bias from 3 functions. 
DSPContext.vector_fmul_window()
DCADSPContext.lfe_fir()
SynthFilterContext.synth_filter_float()

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-01-31 20:28:42 +00:00
Justin Ruggles
79ce107847 cosmetics: indentation and spacing 
(cherry picked from commit b5ec638343)
 2011-01-28 03:15:35 +01:00
Justin Ruggles
733dbe7d18 Remove the add bias hack for the C version of DSPContext.float_to_int16_*(). 
(cherry picked from commit 9d06d7bce3)
 2011-01-28 03:15:35 +01:00
Diego Elio Pettenò
e7e2df27f8 Add ff_ prefix to data symbols of encoders, decoders, hwaccel, parsers, bsf. 
None of these symbols should be accessed directly, so declare them as
hidden.

Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit d36beb3f69)
 2011-01-28 03:15:34 +01:00
Justin Ruggles
dff80041e3 Add ff_ prefix to ac3_common_init(). 
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 4c57cde942)
 2011-01-28 03:15:33 +01:00
Justin Ruggles
b5ec638343 cosmetics: indentation and spacing 2011-01-28 00:21:46 +00:00
Justin Ruggles
9d06d7bce3 Remove the add bias hack for the C version of DSPContext.float_to_int16_*(). 2011-01-28 00:07:35 +00:00
Diego Elio Pettenò
d36beb3f69 Add ff_ prefix to data symbols of encoders, decoders, hwaccel, parsers, bsf. 
None of these symbols should be accessed directly, so declare them as
hidden.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-01-26 16:08:45 +00:00
Justin Ruggles
4c57cde942 Add ff_ prefix to ac3_common_init(). 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-01-26 15:35:27 +00:00
Stefano Sabatini
5d6e4c160a Replace deprecated symbols SAMPLE_FMT_* with AV_SAMPLE_FMT_*, and enum 
SampleFormat with AVSampleFormat.

Originally committed as revision 25730 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-11-12 11:04:40 +00:00
Carl Eugen Hoyos
eb0a4d3222 Fix compilation of AC3 decoder if E-AC3 decoder was disabled. 
Originally committed as revision 23131 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-05-13 20:41:36 +00:00
Justin Ruggles
cc8538ff93 ac3dec: return smaller of buf_size and frame_size instead of always returning 
frame_size.

Originally committed as revision 22950 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-04-22 21:43:36 +00:00
Stefano Sabatini
2874c81cc8 Replace all remaining occurrences of AVERROR_NOMEM with 
AVERROR(ENOMEM).

AVERROR_NOMEM is deprecated and will be dropped at the next libavutil
major bump.

Originally committed as revision 22791 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-04-03 14:15:00 +00:00
Stefano Sabatini
72415b2adb Define AVMediaType enum, and use it instead of enum CodecType, which 
is deprecated and will be dropped at the next major bump.

Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-03-30 23:30:55 +00:00
Carl Eugen Hoyos
ca6e7708b4 Add spectral extension to the E-AC-3 decoder. 
Original patch by Justin, updated and resubmitted by
Christophe Gisquet, christophe D gisquet A gmail

Originally committed as revision 22734 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-03-30 22:09:14 +00:00
Justin Ruggles
2c2cdc0bfb Simplify error handling by processing header errors separate from CRC and 
buffer size vs. frame size errors.

Originally committed as revision 21519 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-01-28 23:19:33 +00:00
Justin Ruggles
008f872f61 Only check frame size if the header is valid. 
Originally committed as revision 21439 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-01-24 23:55:33 +00:00
Reimar Döffinger
1460c79097 Use MULH instead of 64x64 multiplication, around 5% overall speedup on Intel Atom. 
Patch by myself and Yuriy Kaminskiy [yumkam mail ru]

Originally committed as revision 21175 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-01-12 23:02:07 +00:00
Justin Ruggles
7934cbb3be ac3dec: apply dynamic range compression to correct channels in dual-mono mode. 
Originally committed as revision 20533 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-11-14 00:25:48 +00:00
Justin Ruggles
187bc061e4 ac3dec: revert r20089. The change was just wrong. 10l for me. 
Originally committed as revision 20473 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-11-08 03:06:05 +00:00
Justin Ruggles
535497f193 Change an error to a warning to support broken AC-3 files known to exist. 
Fixes Issue 1426.

Originally committed as revision 20110 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-10-01 00:06:54 +00:00
Justin Ruggles
3fdccca091 10l: wrong operation in stereo rematrixing 
Originally committed as revision 20106 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-30 21:51:02 +00:00
Justin Ruggles
2ed4439658 Simplify stereo rematrixing by only using one temporary variable. It is also 
about 1.8% faster on my system.

Originally committed as revision 20090 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-09-30 01:25:04 +00:00
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
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