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21 Commits

Author SHA1 Message Date
Vittorio Giovara
f52b871761 celp_filters: don't use filter lenght as loop bound 
CC: libav-stable@libav.org
Bug-Id: CID 717906 / CID 717907 / CID 717916 /
        CID 717917 / CID 717919 / CID 732259
 2014-11-03 12:45:42 -05:00
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
Mans Rullgard
fddc5b9bea celp: optimise ff_celp_lp_synthesis_filter() 
Adding instead of subtracting the products in the loop allows the
compiler to generate more efficient multiply-accumulate instructions
when 16-bit multiply-subtract is not available. ARM has only
multiply-accumulate for 16-bit operands.  In general, if only one
variant exists, it is usually accumulate rather than subtract.

In the same spirit, using the dedicated saturation function enables
use of any special optimised versions of this.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2012-08-13 01:03:25 +01:00
Mohamed Naufal Basheer
8aac5585fa Add a shift parameter to celp_lp_synthesis_filter() 
This is intended for reuse by the G.723.1 decoder

Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>
 2012-07-22 07:58:53 +02:00
Alex Converse
37ddd38332 celp filters: Do not read earlier than the start of the 'out' vector. 
CC: libav-stable@libav.org
 2012-05-04 10:55:31 -07:00
Mans Rullgard
e65ab9d94f Remove unused variables 2011-06-02 20:06:00 +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
Vitor Sessak
fe89ccd162 Fix spelling in comment 
Originally committed as revision 22137 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-03-01 20:42:13 +00:00
Vitor Sessak
efb0102fef Add commented-out unoptimized code to improve readability 
Originally committed as revision 22136 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-03-01 19:56:51 +00:00
Vitor Sessak
5c910fcad8 Cosmetics: make celp_filters.* formatting more consistent with the rest of 
FFmpeg

Originally committed as revision 20885 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-12-16 17:15:57 +00:00
Vitor Sessak
6ef607c2d5 Optimize ff_celp_lp_synthesis_filterf(). 50% faster in my tests. 
Originally committed as revision 20884 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-12-16 17:09:33 +00:00
Ronald S. Bultje
b1ade3d182 And on the sixth day, God gave us the <= operand, which makes the loop 
"for (i = 1; i < num + 1; i++)" look like "for (i = 1; i <= num; i++)".
Programmers worldwide rejoiced and used the operand, e.g. in the thread
"[PATCH] remove ugliness in cel_filters.c", and He saw that it was good.

Originally committed as revision 20489 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-11-09 22:04:03 +00:00
Colin McQuillan
d4d6ae1603 Add ff_celp_circ_addf() function to be used for sparse vector circular 
convolution in the upcoming AMR-NB floating point decoder. The function scales
and adds a vector, that is lagged by some offset, to another vector with the
same number of elements.

Patch by Colin McQuillan ( m.niloc googlemail com )

Originally committed as revision 19634 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-08-12 19:54:28 +00:00
Colin McQuillan
d5652f38fb Correct the sign of the arithmetic in ff_celp_lp_zero_synthesis_filterf() 
Patch by Colin McQuillan ( m.niloc googlemail com )

Originally committed as revision 19574 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-08-03 17:15:01 +00:00
Diego Biurrun
954489244e cosmetics: K&R coding style 
Originally committed as revision 19561 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-08-02 10:34:30 +00:00
Kenan Gillet
d1bf60771c Add LP zero synthesis filter. Patch by Kenan Gillet. 
Originally committed as revision 18616 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-04-18 22:53:37 +00:00
Reynaldo H. Verdejo Pinochet
e223a3bd38 [COSMETIC] Correct a minor nit. Should be clearer now. 
Originally committed as revision 18529 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-04-15 19:37:35 +00:00
Kenan Gillet
807c4c7875 Fix possibly harmful outbound addressing. Patch by Kenan Gillet. 
Originally committed as revision 18528 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-04-15 19:28:28 +00:00
Kenan Gillet
cacb82134e Change sign in ff_celp_lp_synthesis_filterf(). This makes this function 
useful for AMR and RA144.

Patch by Kenan Gillet

Originally committed as revision 17546 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-02-23 22:19:16 +00:00
Kenan Gillet
1fb0d4b8a6 Add a LPC filter 
Part of the QCELP patch by Kenan Gillet, kenan.gillet gmail com

Originally committed as revision 15754 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-10-30 21:05:37 +00:00
Kenan Gillet
4599d22c0c Split off celp_filters.[ch] from acelp_filters.[ch] for the QCELP decoder. 
patch by Kenan Gillet, kenan.gillet gmail com

Originally committed as revision 15680 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-10-24 21:29:23 +00:00