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25 commits

Author SHA1 Message Date
Jean-Marc Valin
18335e8e4d Removed a float operation that sneaked in in the fixed-point code 2016-08-15 19:50:45 -04:00
Jean-Marc Valin
b7c7653941 Speeding up PVQ search by allocating even more pulses in the projection. 2016-08-15 17:30:00 -04:00
Jean-Marc Valin
2ff6556f1f Making stereo_itheta() use the same atan2() approximation as tonality_analysis() 2016-08-11 11:05:51 -04:00
Jean-Marc Valin
76674feae2 SSE2 implementation of the PVQ search 
We used the SSE reciprocal square root instruction to vectorize the serch rather
than compare one at a time with multiplies. Speeds up the entire encoder by 8-10%.
 2016-08-09 23:22:27 -04:00
Jean-Marc Valin
e806d6a741 Making signx[] an int in alg_quant() and removes unnecessary sign copying 
No measurable speed change.
 2016-08-06 15:49:55 -04:00
Jean-Marc Valin
c7bbc3e31f Speeding up PVQ using unlikely() and moving first position out of the loop 
Speeds up encoding by another ~1-2%
 2016-08-06 15:09:39 -04:00
Jean-Marc Valin
09b5352928 Getting gcc to use cmovs rather than branches in alg_quant() 
Speeds up CELT encoding by around 5% on x86
 2016-08-06 00:06:48 -04:00
Jean-Marc Valin
9eee106214 cleanup: putting resynth flag in the context 2016-07-28 15:16:13 -04:00
Jean-Marc Valin
b66080a879 Fixes minor code quality issues in CELT 
Reported by Durandal.
 2016-06-20 12:11:05 -04:00
Rhishikesh Agashe
c9c2035355 Fixes compile problems for MIPS 
Brings MIPS in sync with the ARM/SSE optimizations that added "arch" parameters.

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>
 2015-10-07 13:55:12 -04:00
xiangmingzhu
c95c9a048f Cisco optimization for x86 & fixed point 
1. Only for fixed point on x86 platform (32bit and 64bit, uses SIMD
   intrinsics up to SSE4.2)
2. Use "configure --enable-fixed-point --enable-intrinsics" to enable
   optimization, default is disabled.
3. Official test cases are verified and passed.

Signed-off-by: Timothy B. Terriberry <tterribe@xiph.org>
 2014-10-03 21:16:00 -04:00
Rhishikesh Agashe
f133bac6f9 MIPS optimizations 
Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>
 2014-06-19 04:04:51 -04:00
Jean-Marc Valin
c543ec1bd3 Speeding up extract_collapse_mask() slightly 2014-01-23 00:02:12 -05:00
Jean-Marc Valin
6218cba258 Making decode_pulses() compute the L2-norm on the fly 2014-01-21 15:17:01 -05:00
Jean-Marc Valin
29354ff6e0 Save more integer divisions on ARM when we know the operands are positive 2014-01-21 10:39:33 -05:00
Jean-Marc Valin
ed01a596dc Making exp_rotation1() use MAC16_16(), which saves a few cycles on ARM 2014-01-04 21:06:24 -05:00
Jean-Marc Valin
e0f26246b0 fixed-point: adds rounding to some shifts to eliminate bias 
This reduces the peak decoding error by removing small (inaudible) spikes in
the error at the frame boundaries. These were due to the frequency-domain bias
ending up as a small pulse in the middle of the IMDCT overlap. None of this
was ever audible, but fixing it is still cleaner.
 2013-12-14 11:07:13 -05:00
Jean-Marc Valin
5607d5d1c8 Annotating pointer arguments with OPUS_RESTRICT and const 2013-12-10 22:09:29 -05:00
Jean-Marc Valin
57cd849cf7 Defining celt_inner_prod() and using it instead of explicit loops. 
Also adds an SSE-optimized celt_inner_prod().
 2013-12-09 15:26:58 -05:00
Gregory Maxwell
de0b5324b6 Replace C99 restrict keyword with OPUS_RESTRICT. 
We had previously advised people to -Drestrict on
non-C99 compilers, but this creates problems for
some of the MSVC headers. Instead this just
uses a macro and defines it sanely.
 2012-07-18 12:12:35 -04:00
Jean-Marc Valin
cb05e7cd96 s/FOUNDATION/COPYRIGHT OWNER/ in CELT code and "glue code" 
Also added 3rd clause to "master" COPYING file
 2012-04-20 16:41:42 -04:00
Jean-Marc Valin
72273000ec Misc changes to address Robert Sparks' comments 
See http://www.ietf.org/mail-archive/web/codec/current/msg02833.html
Still more changes to come
 2012-04-20 10:26:08 -04:00
Koen Vos
43a0de4af1 Optimization of the CBR loop 
Also some comment/warning fixes
 2011-10-24 09:10:58 -04:00
Jean-Marc Valin
0da4f238e0 Avoiding more left shifts of negative values 2011-09-25 00:11:46 -04:00
Jean-Marc Valin
c37499090b renames the libcelt/ directory to celt/ 2011-09-13 18:21:18 -07:00
Renamed from libcelt/vq.c (Browse further)