4c64c8e95a
ac3dec: fix processing of delta bit allocation information.
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The number of dba segments is the coded value + 1.
The coupling dba offset starts at the first coupling band, not at zero.
2011-04-17 12:33:41 -04:00
6d9f52b2cd
ac3: move ff_ac3_bit_alloc_calc_bap to ac3dsp
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Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-03-29 19:31:45 +01:00
991f3de1bb
ac3enc: Add codec-specific options for writing AC-3 metadata.
2011-03-27 11:30:09 -04:00
be18738801
Get audio_service_type for AC-3 based on bitstream mode in the AC-3 parser
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and decoder, and vice-versa for the AC-3 encoder.
2011-03-25 16:59:00 -04:00
4c886d613d
Detect byte-swapped AC-3 and support decoding it directly.
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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.
2011-03-22 15:36:47 -04:00
40728b5169
cosmetics: indentation
2011-03-22 15:36:47 -04:00
67fc8652b9
Always copy input data for AC3 decoder.
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Depending on error_recognition is not correct, low values do
certainly not mean it is ok to crash.
Based on a patch by Reimar Döffinger <Reimar.Doeffinger@gmx.de>
2011-03-22 15:36:47 -04:00
a45fbda994
Move ff_kbd_window_init() to a separate file
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This function is not tightly coupled to mdct, and it's in the way
of making a fixed-point mdct implementation.
Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-03-19 19:49:27 +00:00
26f548bb59
fft: remove inline wrappers for function pointers
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This removes the rather pointless wrappers (one not even inline)
for calling the fft_calc and related function pointers.
Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-03-19 19:49:18 +00:00
2912e87a6c
Replace FFmpeg with Libav in licence headers
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Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-03-19 13:33:20 +00:00
c73d99e672
Separate format conversion DSP functions from DSPContext.
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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
80ba1ddb58
Remove unneeded add bias from 3 functions.
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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
b5ec638343
cosmetics: indentation and spacing
2011-01-28 00:21:46 +00:00
9d06d7bce3
Remove the add bias hack for the C version of DSPContext.float_to_int16_*().
2011-01-28 00:07:35 +00:00
d36beb3f69
Add ff_ prefix to data symbols of encoders, decoders, hwaccel, parsers, bsf.
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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
4c57cde942
Add ff_ prefix to ac3_common_init().
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Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-01-26 15:35:27 +00:00
5d6e4c160a
Replace deprecated symbols SAMPLE_FMT_* with AV_SAMPLE_FMT_*, and enum
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SampleFormat with AVSampleFormat.
Originally committed as revision 25730 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-11-12 11:04:40 +00:00
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
Justin Ruggles
Mans Rullgard
Reimar Döffinger
Diego Elio Pettenò
Stefano Sabatini
Carl Eugen Hoyos
Diego Biurrun
Ronald S. Bultje
Jason Garrett-Glaser