eb0a4d3222
Fix compilation of AC3 decoder if E-AC3 decoder was disabled.
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Originally committed as revision 23131 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-05-13 20:41:36 +00:00
cc8538ff93
ac3dec: return smaller of buf_size and frame_size instead of always returning
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frame_size.
Originally committed as revision 22950 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-04-22 21:43:36 +00:00
2874c81cc8
Replace all remaining occurrences of AVERROR_NOMEM with
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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
72415b2adb
Define AVMediaType enum, and use it instead of enum CodecType, which
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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
ca6e7708b4
Add spectral extension to the E-AC-3 decoder.
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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
2c2cdc0bfb
Simplify error handling by processing header errors separate from CRC and
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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
008f872f61
Only check frame size if the header is valid.
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Originally committed as revision 21439 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-01-24 23:55:33 +00:00
1460c79097
Use MULH instead of 64x64 multiplication, around 5% overall speedup on Intel Atom.
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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
7934cbb3be
ac3dec: apply dynamic range compression to correct channels in dual-mono mode.
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Originally committed as revision 20533 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-11-14 00:25:48 +00:00
187bc061e4
ac3dec: revert r20089. The change was just wrong. 10l for me.
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Originally committed as revision 20473 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-11-08 03:06:05 +00:00
535497f193
Change an error to a warning to support broken AC-3 files known to exist.
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Fixes Issue 1426.
Originally committed as revision 20110 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-10-01 00:06:54 +00:00
3fdccca091
10l: wrong operation in stereo rematrixing
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Originally committed as revision 20106 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-09-30 21:51:02 +00:00
2ed4439658
Simplify stereo rematrixing by only using one temporary variable. It is also
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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
16c91d2b23
remove unneeded assignment in inner loop. rematrixing bands are contiguous.
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Originally committed as revision 20089 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-09-30 01:09:57 +00:00
8b11b44ea7
Rearrange loop structure for approx. 35-50% faster calc_transform_coeffs_cpl()
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depending on content.
Originally committed as revision 20055 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-09-27 07:16:51 +00:00
3b6c5ad2f6
Move variable declaration to inside of loop.
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Originally committed as revision 20053 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-09-27 06:38:57 +00:00
025873738f
Cosmetics: Rename some variables.
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Originally committed as revision 20052 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-09-27 06:38:13 +00:00
b5f4639b13
Simplify coupling band loop.
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Originally committed as revision 20051 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-09-27 06:33:23 +00:00
a521aadfe8
cosmetics: reindent after last commit
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Originally committed as revision 19589 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-08-05 02:31:13 +00:00
25dcd1823c
ac3dec: simplify zero-bit mantissa dithering by calculating it
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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
b972c06a8f
cosmetics: indentation and line wrap
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Originally committed as revision 19587 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-08-05 01:58:28 +00:00
c36ea0600c
cosmetics after last commit
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Originally committed as revision 19586 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-08-05 01:14:28 +00:00
3f93716809
Modify decode_band_structure() so that the actual band structure is only
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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
603139022d
Use coupling band sizes instead of coupling band structure when
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calculating coupling transform coefficients.
Originally committed as revision 19584 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-08-05 01:00:41 +00:00
eb98cdfa8d
cosmetics: add more detailed information to the documentation for
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decode_band_structure().
Originally committed as revision 19577 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-08-03 22:05:31 +00:00
d15153244f
refactoring: properly separate AC-3 and E-AC-3 code
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Originally committed as revision 19501 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-07-23 02:33:25 +00:00
89547cfb36
Make sure that eac3_decoder only gets enabled when CONFIG_EAC3_DECODER is set.
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Originally committed as revision 19500 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-07-23 00:15:23 +00:00
ce863d7f36
Rename ff_log_missing_feature() to av_log_missing_feature().
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Originally committed as revision 19294 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-06-29 19:07:04 +00:00
ae04de316f
eac3dec: revert commit r18860. keep the AHT IDCT 24-bit. will make AHT GAQ
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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
1754fe4d30
The AC-3 decoder is now LGPL. Exchange the license header and change references
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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
d869a460db
LGPL version of ac3_decode_transform_coeffs_ch, ~12.4% faster.
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Originally committed as revision 18875 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-05-19 21:29:21 +00:00
9a7a71ed4c
eac3dec: use 16-bit pre-mantissas instead of 24-bit in AHT decoding. it is
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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
1ac7d1ac50
ac3dec: fix coupling range check. the start subband must be less than
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the end subband.
Originally committed as revision 18857 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-05-16 17:02:44 +00:00
7d485f165f
Support for getting (i)MDCT output multiplied by a constant scaling factor.
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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
778bc09bbe
cosmetics: line wrap and vertical alignment
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Originally committed as revision 18752 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-05-06 01:48:14 +00:00
396b73c7f7
ac3dec: Remove unneeded context variable, num_cpl_subbands. It is also
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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
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
Carl Eugen Hoyos
Justin Ruggles
Stefano Sabatini
Reimar Döffinger
Diego Biurrun
Ronald S. Bultje
Jason Garrett-Glaser
Siarhei Siamashka
Thilo Borgmann
Alex Converse