Commit Graph

34 Commits

Author SHA1 Message Date
Niels Möller
217e4ff4d1 dca: Support for XLL (lossless extension)
Cleanup and integration by Diego Biurrun.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
2015-03-15 14:51:36 +01:00
Diego Biurrun
3a651f599a dca: Move data tables from a header to an object file
This allows sharing them with the DCA XLL extension w/o duplication.
2015-02-15 13:34:04 -08:00
Diego Biurrun
65df9904ce dca: Add array sizes to array declarations 2015-02-15 13:34:04 -08:00
Diego Biurrun
2a9c6fae92 dca: Move all tables into dcadata.h 2015-02-14 10:13:49 -08:00
Gabriel Dume
45ff7c93dd dca: K&R formatting cosmetics
Signed-off-by: Diego Biurrun <diego@biurrun.de>
2014-09-16 04:42:32 -07:00
Niels Möller
6b7b8585d7 dca: Convert dca_dmixtable to integers
Also include zero in the table, eliminating a special case in the
decoder.

Signed-off-by: Niels Möller <nisse@southpole.se>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
2014-05-23 15:07:05 +02:00
Christophe Gisquet
87ec849fe9 dcadec: remove scaling in lfe_interpolation_fir
The scaling factor is constant so it is faster to scale the
FIR coefficients in the tables during compilation.

Signed-off-by: Janne Grunau <janne-libav@jannau.net>
2014-02-28 13:00:47 +01:00
Tim Walker
aaa44d0299 dca: support mixing LFE in dca_downmix.
Embedded downmix coefficients can use this.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
2013-11-28 22:02:53 +01:00
Tim Walker
149438cfe5 dca: improve default stereo downmix coefficients.
Previous coefficients were producing a non-normalized, incorrect Lt/Rt downmix.

The new coefficients produce a standard Lo/Ro downmix with 3dB attenuation.

This should match the typical default coefficients used by DTS encoders.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
2013-11-28 22:02:53 +01:00
Tim Walker
44b17d794a dca: extract core substream's embedded downmix coeffcient codes, if present.
As per ETSI TS 102 114 V1.4.1 specification.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
2013-11-28 22:02:53 +01:00
Tim Walker
27245b4e1b dca: remove embedded downmix coefficient extraction.
It was based on an old, seemingly incorrect specification, so default
coefficients were always used anyway.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
2013-11-28 22:02:50 +01:00
Tim Walker
b6d5e6aa10 dca: convert dca_default_coeffs to float.
Easier to read, modify, and avoids relying on an outdated table.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
2013-11-28 21:38:22 +01:00
Diego Biurrun
9e4bca16f8 dca: Move tables used outside of dcadec.c to a separate file. 2012-08-01 00:17:17 +02:00
Ronald S. Bultje
e6ffd997cb dca: prevent accessing static arrays with invalid indexes.
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
2012-03-07 09:37:29 -08:00
Mans Rullgard
bf5d46d8e6 dca: NEON optimised high freq VQ decoding
Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-09-30 19:01:23 +01:00
Mans Rullgard
2912e87a6c Replace FFmpeg with Libav in licence headers
Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-03-19 13:33:20 +00:00
Mans Rullgard
2611e52088 dca: pretty-print some tables
Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-01-21 10:37:21 +00:00
Diego Biurrun
ba87f0801d Remove explicit filename from Doxygen @file commands.
Passing an explicit filename to this command is only necessary if the
documentation in the @file block refers to a file different from the
one the block resides in.

Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-04-20 14:45:34 +00:00
Måns Rullgård
e168a5567a DCA: 16-byte-align lfe_fir tables
Originally committed as revision 22862 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-04-12 20:45:29 +00:00
Måns Rullgård
766fefe8e2 DCA: simplify lfe_interpolation_fir()
This reorders the lfe_fir tables, and drops the mirrored half,
such that the loops in lfe_interpolation_fir() can be simplified.
The new loop structure should be easier to implement with SIMD.
Static data size is reduced by 2kB.
3% faster on Cortex-A8.

Originally committed as revision 22849 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-04-12 11:14:55 +00:00
Jai Menon
96561c12c5 DECLARE_ALIGNED usage requires #inclusion of 'mem.h'.
Originally committed as revision 22838 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-04-11 15:54:45 +00:00
Måns Rullgård
38d52f3ea3 DCA: align some arrays
Optimised implementations of the synth filter will require these
arrays 16-byte aligned.

Originally committed as revision 22826 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-04-10 16:27:47 +00:00
Diego Biurrun
bad5537e2c Use full internal pathname in doxygen @file directives.
Otherwise doxygen complains about ambiguous filenames when files exist
under the same name in different subdirectories.

Originally committed as revision 16912 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-02-01 02:00:19 +00:00
Diego Biurrun
99ed41a808 Fix filenames in Doxygen comments.
Originally committed as revision 16811 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-01-26 22:51:16 +00:00
Stefano Sabatini
987903826b Globally rename the header inclusion guard names.
Consistently apply this rule: the guard name is obtained from the
filename by stripping the leading "lib", converting '/' and '.'  to
'_' and uppercasing the resulting name. Guard names in the root
directory have to be prefixed by "FFMPEG_".

Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-31 07:39:47 +00:00
Alexander E. Patrakov
3fc45bdcf0 fir_32bands_perfect[] contents were mixed, restore original order
Patch by Alexander Patrakov ($lastname <whirlpool> gmail.com)
Thread: dcadata.h: fir_32bands_perfect[] is wrong

Originally committed as revision 14964 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-25 06:28:52 +00:00
Reimar Döffinger
77777f0dd8 Some spelling fixes in comments
Originally committed as revision 11138 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-02 22:04:21 +00:00
Diego Biurrun
5b21bdabe4 Add FFMPEG_ prefix to all multiple inclusion guards.
Originally committed as revision 10765 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-10-17 09:37:46 +00:00
Guillaume Poirier
efb775777f add a comment to indicate which #endif belong to which #define
Originally committed as revision 9356 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-06-17 18:59:28 +00:00
Måns Rullgård
699b3f99d0 add multiple inclusion guards to headers
Originally committed as revision 9345 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-06-17 00:01:30 +00:00
Måns Rullgård
99545457bf include all prerequisites in header files
Originally committed as revision 9344 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-06-16 22:59:13 +00:00
Justin Ruggles
c31a76e4ef use downmixing coefficients in dca decoder.
reference:
Subject: [Ffmpeg-devel] [PATCH] DTS multichannel
Date: Wed, 25 Apr 2007 16:25:18 -0400

Originally committed as revision 8875 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-05-02 20:33:32 +00:00
Diego Biurrun
bf925c056b Fix wrong license header.
Originally committed as revision 8144 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-02-27 09:56:09 +00:00
Kostya Shishkov
01ca9ac334 DCA decoder
Originally committed as revision 8141 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-02-27 06:30:40 +00:00