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98 Commits

Author SHA1 Message Date
Frank Barchard
cae07fb0e0 bump subsampling up 
BUG=455
TESTED=libyuvTest.ARGBToYUY2_Random
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/58419004.
 2015-06-12 15:25:03 -07:00
Frank Barchard
03da5420bc use SIMD for I420ToARGB odd widths in a temporary buffer instead of using C for remainder. 
Enter a description of the change.

use SIMD for I420ToARGB odd widths in a temporary buffer instead of using C for remainder.  Currently the C code does not exactly match the SIMD code, so an odd width produces different pixels than an even width, causing a subtle artifact.  By using SIMD consistently, there is no difference in even and odd widths.  Also the SIMD performance is faster, so even with overhead of memcpy, performance improves.

BUG=447
TESTED=out\release\libyuv_unittest.exe --gtest_filter=*I420ToARGB*
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/55579004.
 2015-06-11 16:38:52 -07:00
fbarchard@google.com
bd2d903e1b odd width support for ARGBSobel functions. Improves performance for images that are not a multiple of 8 pixels. 
BUG=444
TESTED=libyuvTest.ARGBSobel_Opt
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/54589004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1415 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-05-28 22:22:28 +00:00
fbarchard@google.com
cfce47efc8 Change Sobel to use JPeg Luma calculation instead of extracting G channel. Using luma produces a better sobel that respects all 3 channels of RGB. Historically the G channel was used to improve performance, and because the luma of I420 is a constrained range, hurting quality. Using the JPeg variation of YUV, the luma is more accurate, including cross platform, better optimized for AVX2 and odd widths, and full range. 
BUG=444
TESTED=ARGBSobelXY_Opt
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/57479004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1414 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-05-27 22:32:26 +00:00
fbarchard@google.com
bb5a009d11 ARGB4444ToARGB and ARGB1555ToARGB ported to AVX2. 
BUG=421
TESTED=out\release\libyuv_unittest --gtest_filter=*ARGB4444ToARGB*
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/48009004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1363 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-04-07 23:52:57 +00:00
fbarchard@google.com
2827277496 port RGB565ToARGB to AVX2. 
BUG=421
TESTED=out\release\libyuv_unittest --gtest_filter=*RGB565ToARGB*
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/49609004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1357 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-04-06 19:24:23 +00:00
fbarchard@google.com
0e4388aea3 I422ToRGB24 AVX2 and I422ToRAW 
BUG=none
TESTED=I422ToRGB24 unittest
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/46619004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1337 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-17 17:25:27 +00:00
yang.zhang@arm.com
e246e6c18f Add ARGBToRGB565DitherRow_NEON for ARM32/64 
ARM32/64 NEON versions of ARGBToRGB565DitherRow_NEON are implemented.

BUG=407
TESTED=libyuvTest.* on ARM32/64 with Android
R=fbarchard@google.com

Change-Id: Ia689170fb39db964392e5e1113801592ab0628bf

Review URL: https://webrtc-codereview.appspot.com/49409004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1335 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-17 02:22:25 +00:00
fbarchard@google.com
92f7f421fd rename I400 to J400 and I400 reference to I400. J400 is a simple replication of values to convert to RGB, which is what the old I400 was. I400 reference is the Y part of the YUV formula, so renaming that to I400. 
BUG=none
TESTED=libyuvTest (5925 ms total)
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/50369005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1333 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-17 00:01:18 +00:00
fbarchard@google.com
f2fad0faa5 Optimized J422ToARGB. 
BUG=414
TESTED=J422ToARGB unittest
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/42799004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1328 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-16 18:08:30 +00:00
fbarchard@google.com
685b92b0a6 I400ToARGB_AVX2 port from SSE2 to AVX2. 
BUG=403
TESTED=libyuv_unittest.exe --gtest_catch_exceptions=0 --gtest_filter=*I400ToARGB*
R=brucedawson@google.com

Review URL: https://webrtc-codereview.appspot.com/46569004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1322 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-11 18:12:17 +00:00
fbarchard@google.com
f5a7b2b48a I411ToARGB AVX2 version 
BUG=403
TESTED=I411ToARGB unittest
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/42689004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1321 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-11 00:08:56 +00:00
fbarchard@google.com
cdd80e04c9 Port I444ToARGB to AVX2. 
BUG=403
TESTED=I444ToARGB unittests
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/45589004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1314 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-09 21:56:48 +00:00
fbarchard@google.com
bdeb9ac584 switch from 8x8 to 4x4 matrix for dithering 
BUG=407
TESTED=Dither unittests
R=brucedawson@google.com

Review URL: https://webrtc-codereview.appspot.com/46459004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1310 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-06 18:28:00 +00:00
fbarchard@google.com
0fe4abbc5c ARGBToRGB565 AVX2 with dithering 
BUG=407
TESTED=ARGBToRGB565Dither unittest
R=brucedawson@google.com, harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/44519004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1309 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-04 22:31:43 +00:00
fbarchard@google.com
9245317e16 ARGBToRGB565 SSE2 port. 
BUG=407
TESTED=ARGBToRGB565Dither unittest
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/41039004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1308 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-03-04 00:00:50 +00:00
fbarchard@google.com
933bd40c3c port ARGBToRGB565 and ARGB1555 to AVX2. Enable functions that use ARGBToRGB565 AVX2 code. Add ARGBToRGB565Dither function. 
BUG=403
TESTED=local windows build
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/42109004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1302 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-02-27 21:15:28 +00:00
fbarchard@google.com
bffd326f74 AVX2 version of ARGBToARGB4444 
BUG=403
TESTED=local build on windows
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/43429004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1297 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-02-25 17:26:28 +00:00
fbarchard@google.com
d96047761e AVX2 version of NV12ToARGB 
BUG=403
TESTED=untested
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/40089004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1295 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-02-24 23:45:08 +00:00
fbarchard@google.com
446fa95587 I422ToRGB565, ARGB4444 and ARGB1555 for AVX2 
BUG=403
TESTED=avx2 emulator

Review URL: https://webrtc-codereview.appspot.com/34359004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1293 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-02-24 23:14:46 +00:00
fbarchard@google.com
e2f1a75474 move mask to last parameter of any functions for consistency. 
BUG=none
TESTED=local libyuv unittest passes
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/43419004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1292 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-02-24 21:18:30 +00:00
fbarchard@google.com
239962fa00 YUY2 and UYVY to ARGB AVX2 versions via wrappers. 
BUG=403
TESTED=UNTESTED
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/34339004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1291 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-02-24 18:58:51 +00:00
kjellander@google.com
28d1a582ba Revert "YUY2ToARGB and UYVYToARGB AVX with C wrapper to call lower level conversions." 
This reverts r1288 due to breaking compilation on bots:
http://build.chromium.org/p/client.libyuv/builders/Mac64%20Debug/builds/365
http://build.chromium.org/p/client.libyuv/builders/Linux64%20Debug/builds/667

TBR=fbarchard@google.com
TESTED=Reverted locally and all built fine again.

Review URL: https://webrtc-codereview.appspot.com/40879004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1289 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-02-23 09:22:22 +00:00
fbarchard@google.com
b52606c024 YUY2ToARGB and UYVYToARGB AVX with C wrapper to call lower level conversions. 
BUG=403
TESTED=convert unittest
R=brucedawson@google.com

Review URL: https://webrtc-codereview.appspot.com/40839004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1288 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-02-21 00:49:35 +00:00
fbarchard@google.com
0887315390 Remove bayer format support from libyuv. This format is very rare and used on legacy hardware. Its not well optimized and has bugs related to odd widths. Removing the format will allow tests to pass under more circumstances, run faster and allow focus on higher priority quality and performance issues. 
BUG=301
TESTED=local unittests build/pass on windows gyp build.
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/38059004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1270 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-02-09 19:58:19 +00:00
fbarchard@google.com
3982998c7c YToARGB AVX2 port from SSE2 
BUG=393
TESTED=YToARGB unittest
R=brucedawson@google.com, harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/41679004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1258 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-02-03 01:35:11 +00:00
fbarchard@google.com
63882a356f Disable YToARGB assembly which is off by 1 
BUG=392
TESTED=libyuvTest.YToARGB_Opt

Review URL: https://webrtc-codereview.appspot.com/40549004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1250 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-01-26 17:16:44 +00:00
fbarchard@google.com
b2a6af1be6 Change rectangle low level functions to use more conventional row functions including 'any' variations. Previously the yuv function SetPlane stored 32 bit values. Now a more conventional memset() style function is used for YUV that stores bytes. On Haswell a rep stosb is used for YUV. Overall benefit of this CL is improved performance for 'any' width, and simpler row assembly instead of full image assembly. Previously ARGBRect used a low level function that supported a rectangle in assembly. Now it uses a row function, and relies on row coalesce to combine into a single low level call. 
BUG=371
TESTED=untested
R=brucedawson@google.com, harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/35689004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1222 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2015-01-12 03:58:24 +00:00
fbarchard@google.com
966233e5eb Remove sub 16 from yuv conversions and change bias to include it. 
BUG=388
TESTED=out\release\libyuv_unittest --gtest_catch_exceptions=0 --gtest_filter=*420ToARGB_Opt  | sortms
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/34609004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1216 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-12-31 01:07:02 +00:00
fbarchard@google.com
40e3457574 J420ToARGB jpeg variation of YUV color space to ARGB. 
BUG=241
TESTED=J420ToARGB unittest
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/32929004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1212 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-12-29 19:17:53 +00:00
fbarchard@google.com
ada2a3eb12 Fix for ARGBToY on AVX 
BUG=269
TESTED=local build on osx
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/29229005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1198 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-12-13 01:44:33 +00:00
fbarchard@google.com
ef67597b48 ARGBMirror use SSE2 pshufd instruction instead of SSSE3 pshufb. 
BUG=269
TESTED=local benchmark for ARGBMirror
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/32509004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1176 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-11-21 19:25:14 +00:00
fbarchard@google.com
91f240c5db Move sub before branch for loops. 
Remove CopyRow_x86
Add CopyRow_Any versions for AVX, SSE2 and Neon.
BUG=269
TESTED=local build
R=harryjin@google.com, tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/26209004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1175 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-11-20 21:14:27 +00:00
fbarchard@google.com
9dd083a512 ARGBMirror Any 
BUG=none
TESTED=mirror and rotate unittests
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/30159004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1172 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-11-19 00:46:51 +00:00
fbarchard@google.com
59ed448685 MirrorAny functions so assembly can always be used. 
BUG=none
TESTED=untested
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/29069004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1170 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-11-18 01:03:47 +00:00
fbarchard@google.com
bb3a4b41e9 vextractf128 requuires a constant argument for which dqword to extract, so add a new macro. 
BUG=none
TESTED=local build on clang for osx
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/30869004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1153 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-11-04 21:05:55 +00:00
fbarchard@google.com
067892c5a1 Port YUY2ToYRow_AVX2 and UYVYToYRow_AVX2 to gcc/NaCL from Windows AVX code. 
BUG=269
TESTED=ncval
R=brucedawson@google.com, harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/25039004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1151 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-11-03 18:30:17 +00:00
fbarchard@google.com
88ac01aed0 Change YAny functions to share, and use mask for how many bytes at a time for simd vs C. 
BUG=373
TESTED=libyuv_unittest passes
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/31819004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1142 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-10-24 22:58:38 +00:00
fbarchard@google.com
78a3a6b345 Change Any functions that convert 1 to 1 formats, memcpy style, so use C for remainder to allow a minimum width of 1. This has some advantages - allows function to be used even with SIMD that only allows aligned memory. Fewer macros, used by more functions. SIMD is not used unaligned avoiding page/cache split. No overlap so it can be used in place. Disadvantage is it will be slower if close to the maximum number of non-SIMD pixels. 
BUG=373
TESTED=libyuv_unittest still passes
R=brucedawson@google.com, tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/23209004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1141 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-10-24 22:17:59 +00:00
fbarchard@google.com
1f151f62a9 add a check that the simd function should be called. allows any functions to support any width, simplifing and speeding up the calling code. 
BUG=373
TESTED=try bots
R=brucedawson@chromium.org, harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/25949004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1140 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-10-24 00:45:27 +00:00
fbarchard@google.com
f2fa453b94 Port I422ToABGR to AVX2. 
BUG=269
TESTED=intelsde on I422ToABGR
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/23149004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1138 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-10-23 17:20:22 +00:00
fbarchard@google.com
c000955bc0 Port I422ToRGBA to AVX. 
BUG=269
TESTED=intelsde on I422ToRGBA
R=brucedawson@google.com

Review URL: https://webrtc-codereview.appspot.com/28769004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1136 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-10-22 22:41:39 +00:00
fbarchard@google.com
af6f25245e Reenable AVX2 scaling with bug fix for any width 
BUG=376
TESTED=unittest on scale functions
R=brucedawson@google.com, harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/30759004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1135 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-10-22 01:15:20 +00:00
fbarchard@google.com
d81dddd3d0 port I420ToBGRA to AVX2. 
BUG=269
TESTED=c:\intelsde\sde -ast -hsw -- out\release\libyuv_unittest.exe --gtest_filter=*I420ToBGRA*
R=brucedawson@google.com, harryjin@google.com, magjed@chromium.org

Review URL: https://webrtc-codereview.appspot.com/26869004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1127 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-10-20 19:35:55 +00:00
fbarchard@google.com
008ce53ac4 pavgb with memory op requires alignment. This CL disables conversions that use pavgb, and resolves scale by 3/8 unittest for checking alignment works. The 3/8 code used a pavgb with a memory operand. tests are added for scaling and allow unaligning on purpose. 
BUG=365
TESTED=local change to force unaligned memory fails on some conversions and scaling code.
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/29699004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1114 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-10-07 01:57:34 +00:00
fbarchard@google.com
ca308327d2 Remove unaligned functions, since most function support unaligned memory now. This reduces complexity and improves performance for unaligned cases because C code can be avoided, and overhead is less. Downside is old cpus (core2 and earlier) will be slower for aligned memory case. Except mips, which has alignment requirement, but remove unaligned variant. 
BUG=365
TESTED=unittest builds and passes locally
R=harryjin@google.com

Review URL: https://webrtc-codereview.appspot.com/24839004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1113 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-10-07 00:59:31 +00:00
fbarchard@google.com
044f914c29 Change scale to unaligned movdqu. 
BUG=365
TESTED=scale unittests
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/22879004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1101 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-10-01 01:16:04 +00:00
ashok.bhat@gmail.com
2df5743bd4 Row AArch64 Neon implementation - Part 6 
BUG=319
TESTED=libyuv_unittest
R=fbarchard@google.com

Change-Id: I5d93eb184ba873d5e7637a3b5a830be39a967c6f
Signed-off-by: Ashok Bhat <ashok.bhat@arm.com>

Review URL: https://webrtc-codereview.appspot.com/15239004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1069 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-08-29 08:12:51 +00:00
ashok.bhat@gmail.com
cb8be2fb2b Row AArch64 Neon implementation - Part 4 
BUG=319
TESTED=libyuv_unittest
R=fbarchard@chromium.org, fbarchard@google.com

Change-Id: If145660d999e95246efeedb64a45ba70bf0fe23e
Signed-off-by: Ashok Bhat <ashok.bhat@arm.com>

Review URL: https://webrtc-codereview.appspot.com/13199004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1054 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-08-21 09:55:58 +00:00
fbarchard@google.com
e6dd1fa024 Port I420ToARGB to intrinsics for win64 
BUG=336
TESTED=out\release_x64\libyuv_unittest --gunit_also_run_disabled_tests --gtest_filter=*I420To*B*
R=bryan.bernhart@intel.com, tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/15809005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1018 16f28f9a-4ce2-e073-06de-1de4eb20be90
 2014-06-24 20:45:45 +00:00