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2013-09-17fix vp8-only buildJames Zern
Change-Id: Id9ce44f3364dd57b30ea491d956a2a0d6186be05
2013-09-06cleanup cpplint warningsYaowu Xu
Suggested by James Zern to clear out cpplint warnings for all unit test code. Change-Id: I731a3fa4d2a257eb9ef733426ba84286fbd7ea34
2013-08-06variance x86inc guardsJim Bankoski
also fixed bug in sad calcs Change-Id: I6571fcbe37556c16ae32be66dc0fd879852aac1d
2013-06-26variance_test: add missing ClearSystemState...James Zern
...to recently added SubpelVarianceTest Change-Id: I8775e39fd5dbfba81ad42b79b47bf6dd6ca8cc0e
2013-06-21Allocate memory using appropriate expected alignment in unit tests.Ronald S. Bultje
Fixes crashes of test_libvpx on 32-bit Linux. Change-Id: If94e7628a86b788ca26c004861dee2f162e47ed6
2013-06-21variance_test: use REGISTER_STATE_CHECKJames Zern
Change-Id: Id54ad9a781634f075e990d5bade5be8490959975
2013-06-20SSE2/SSSE3 optimizations and unit test for sub_pixel_avg_variance().Ronald S. Bultje
Encoding of bus @ 1500kbps (first 50 frames) goes from 3min57 to 3min35, i.e. approximately a 10.5% speedup. Note that the SIMD versions which use a bilinear filter (x_offset & 7 || y_offset & 7) aren't perfectly interleaved, and can probably be improved further in the future. I've marked this with a few TODOs/FIXMEs in the code. Change-Id: I5c9e900c0f0d32e431a50fecae213b510b2549f9
2013-06-20Implement sse2 and ssse3 versions for all sub_pixel_variance sizes.Ronald S. Bultje
Overall speedup around 5% (bus @ 1500kbps first 50 frames 4min10 -> 3min58). Specific changes to timings for each function compared to original assembly-optimized versions (or just new version timings if no previous assembly-optimized version was available): sse2 4x4: 99 -> 82 cycles sse2 4x8: 128 cycles sse2 8x4: 121 cycles sse2 8x8: 149 -> 129 cycles sse2 8x16: 235 -> 245 cycles (?) sse2 16x8: 269 -> 203 cycles sse2 16x16: 441 -> 349 cycles sse2 16x32: 641 cycles sse2 32x16: 643 cycles sse2 32x32: 1733 -> 1154 cycles sse2 32x64: 2247 cycles sse2 64x32: 2323 cycles sse2 64x64: 6984 -> 4442 cycles ssse3 4x4: 100 cycles (?) ssse3 4x8: 103 cycles ssse3 8x4: 71 cycles ssse3 8x8: 147 cycles ssse3 8x16: 158 cycles ssse3 16x8: 188 -> 162 cycles ssse3 16x16: 316 -> 273 cycles ssse3 16x32: 535 cycles ssse3 32x16: 564 cycles ssse3 32x32: 973 cycles ssse3 32x64: 1930 cycles ssse3 64x32: 1922 cycles ssse3 64x64: 3760 cycles Change-Id: I81ff6fe51daf35a40d19785167004664d7e0c59d
2013-06-18tests: clear system state after non-API callsJames Zern
add ClearSystemState() to reset MMX registers avoiding corrupting subsequent tests. Change-Id: I668deb09aa7aa467709776e5819f936910698bc0
2013-05-22Optimize variance functionsYunqing Wang
Added SSE2 version of variance functions for super blocks. Change-Id: Ibeaae8771ca21c99d41dd74067574a51e97b412d
2013-02-22add vp8 variance testJames Zern
Change-Id: I4e94ee2c4e2360d6a11a454c323f2899c1bb6f72
2012-11-27Add vp9_ prefix to all vp9 filesJohn Koleszar
Support for gyp which doesn't support multiple objects in the same static library having the same basename. Change-Id: Ib947eefbaf68f8b177a796d23f875ccdfa6bc9dc
2012-11-15support building vp8 and vp9 into a single libJohn Koleszar
Change-Id: Ib8f8a66c9fd31e508cdc9caa662192f38433aa3d
2012-11-06Fix variance (signed integer) overflowJames Zern
In the variance calculations the difference is summed and later squared. When the sum exceeds sqrt(2^31) the value is treated as a negative when it is shifted which gives incorrect results. To fix this we force the multiplication to be unsigned. The alternative fix is to shift sum down by 4 before multiplying. However that will reduce precision. For 16x16 blocks the maximum sum is 65280 and sqrt(2^31) is 46340 (and change). This change is based on: 1698234 Missed some variance casts fea3556 Fix variance overflow Change-Id: I2c61856cca9db54b9b81de83b4505ea81a050a0f
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