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38 Commits

Author SHA1 Message Date
Vittorio Giovara
60e0ee7ca2 lpc: always initialize ref and err 
CC: libav-stable@libav.org
Bug-Id: CID 29585 / CID 700759
 2014-11-14 20:25:52 +01:00
Loren Merritt
1221bb6239 x86: lpc: fix a segfault in av_evaluate_lls_sse2() 2013-06-30 23:11:19 +00:00
Loren Merritt
c93ccf5a4c lpc: use levinson for the first pass of multipass cholesky 
Levinson is faster, and cholesky is only needed if we want to apply different
weights to different samples, which doesn't happen on the first pass.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
 2013-06-29 13:26:52 +02:00
Loren Merritt
502ab21af0 x86: lpc: simd av_update_lls 
4x-6x faster on sandybridge

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
 2013-06-29 13:23:57 +02:00
Loren Merritt
41578f70cf lpc: use function pointers, in preparation for asm 
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
 2013-06-29 13:23:57 +02:00
Loren Merritt
cc6714bb16 lpc: remove "decay" argument 
We never used the rolling-average mode, and this makes av_update_lls 15% faster.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
 2013-06-29 13:23:57 +02:00
Luca Barbato
9d4da474f5 lls: move to the private namespace 
The functions are private.
 2013-02-28 17:39:24 +01:00
Martin Storsjö
8b25a20efb lpc: Add a function for calculating reflection coefficients from samples 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-10-29 21:53:16 +02:00
Janne Grunau
f101eab1be x86: call most of the x86 dsp init functions under if (ARCH_X86) 
Rename the called dsp init functions to *_init_x86.
 2012-10-08 11:54:05 +02:00
Justin Ruggles
4b0e0f31bf lpc: fix alignment of windowed samples for odd maximum LPC order 
Fixes crash on x86 due to alignment requirements for w_data in
lpc_apply_welch_window_sse2().
 2012-08-22 16:41:50 -04:00
Martin Storsjö
1d9c2dc89a Don't include common.h from avutil.h 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-08-15 22:32:06 +03:00
Diego Biurrun
32f3c541bc doxygen: Do not include license boilerplates in Doxygen comment blocks. 2012-02-06 19:39:24 +01:00
Diego Biurrun
c18365402b Replace Subversion revisions in comments by Git hashes. 2011-12-21 09:04:25 +01:00
Diego Biurrun
96c1e6d40d doxygen: Make sure parameter names match between .c and .h files. 2011-07-14 04:09:49 +02:00
Diego Biurrun
24c9babaaf doxygen: Fix parameter names to match the function prototypes. 2011-07-03 18:30:02 +02:00
Anton Khirnov
188dea1dbf lavc: move some flac-specific options to its private context. 2011-05-10 07:42:33 +02:00
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
Justin Ruggles
1c189fc533 cosmetics related to LPC changes. 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-01-21 19:59:08 +00:00
Justin Ruggles
77a78e9bdc Separate window function from autocorrelation. 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-01-21 19:59:08 +00:00
Justin Ruggles
56f8952b25 Move lpc_compute_autocorr() from DSPContext to a new struct LPCContext. 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-01-21 19:58:59 +00:00
Justin Ruggles
23940f1405 Add AVCodecContext.lpc_type and Add AVCodecContext.lpc_passes fields. 
Add AVLPCType enum.
Deprecate AVCodecContext.use_lpc.

Originally committed as revision 24199 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-07-11 16:56:20 +00:00
Måns Rullgård
49bd8e4b84 Fix grammar errors in documentation 
Originally committed as revision 23904 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-06-30 15:38:06 +00:00
Justin Ruggles
fde82ca7e4 Move autocorrelation function from flacenc.c to lpc.c. Also rename the 
corresponding dsputil functions and remove their dependency on the FLAC
encoder.
Fixes Issue1486.

Originally committed as revision 20266 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-10-17 21:00:39 +00:00
Patrik Kullman
3cfe88194a lpc: Remove false positive compilation warning about weight being 
uninitialized. Patch by Patrik Kullman (patrik A yes D nu).

Originally committed as revision 17218 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-02-13 22:05:55 +00:00
Patrik Kullman
eabe8c7033 Assert that ff_lpc_calc_coefs() is called with a valid LPC method. 
Patch by Patrik Kullman (patrik A yes D nu).

Originally committed as revision 17217 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-02-13 22:03:11 +00:00
Patrik Kullman
83f63ffb22 lpc: Document the use_lpc parameter to ff_lpc_calc_coefs(). 
Patch by Patrik Kullman (patrik A yes D nu).

Originally committed as revision 17216 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-02-13 22:01:46 +00:00
Vitor Sessak
1be0fc2909 Avoid duplicating compute_lpc_coefs() function in both the RA288 and AAC decoders. 
Originally committed as revision 15193 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-04 11:03:14 +00:00
Vitor Sessak
f6a1ca1dad Misc cosmetics in compute_lpc_coefs(): braces removal and empty lines 
Originally committed as revision 15093 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-31 02:39:55 +00:00
Vitor Sessak
fc324cd523 Remove useless var in compute_lpc_coefs() 
Originally committed as revision 15091 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-31 02:37:04 +00:00
Vitor Sessak
5d2dd90848 Merge declaration and initialization of a few vars in compute_lpc_coefs() 
Originally committed as revision 15088 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-31 02:31:05 +00:00
Vitor Sessak
f991d423d2 Remove useless zeroing of a buffer 
Originally committed as revision 15038 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-29 21:12:30 +00:00
Diego Biurrun
8e84913db4 cosmetics: Fix incorrect indentation. 
Originally committed as revision 14878 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-21 10:31:08 +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
Justin Ruggles
81fc8a63c5 use range of lpc orders in ORDER_METHOD_EST 
Originally committed as revision 14796 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-16 21:39:09 +00:00
Justin Ruggles
9045f5e72d cosmetics: adjust line breaks and vertical alignment 
Originally committed as revision 14795 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-16 21:32:03 +00:00
Justin Ruggles
56c07e2989 use limited range of lpc orders when quantizing coefficients 
Originally committed as revision 14794 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-16 21:24:06 +00:00
Ramiro Polla
e9e3c9801e lpc: cosmetics: vertically align declarations and definitions. 
Originally committed as revision 14792 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-16 17:28:29 +00:00
Ramiro Polla
c50da3ad6c flacenc, lpc: Move LPC code from flacenc.c to new lpc.[ch] files. 
Originally committed as revision 14790 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-16 17:18:20 +00:00