James Zern
d5e07a8451
variance_test: add NEON functions
...
note not all functions have NEON implementations:
- variance4x4_neon
Change-Id: I03c1ba21f3b02aa2482d7ca8feedc3ef74b5947f
2014-02-26 19:25:02 -08:00
James Zern
002ad40897
test/: remove unnecessary extern "C"s
...
Change-Id: I826655a708010149de231ca31a2e3ba4f1842c0c
2014-01-23 19:42:59 -08:00
James Zern
a0fcbcfa5f
fix vp8-only build
...
Change-Id: Id9ce44f3364dd57b30ea491d956a2a0d6186be05
2013-09-17 18:47:25 -07:00
Yaowu Xu
afffa3d9b0
cleanup cpplint warnings
...
Suggested by James Zern to clear out cpplint warnings for all unit
test code.
Change-Id: I731a3fa4d2a257eb9ef733426ba84286fbd7ea34
2013-09-06 10:13:49 -07:00
Jim Bankoski
5b307886fb
variance x86inc guards
...
also fixed bug in sad calcs
Change-Id: I6571fcbe37556c16ae32be66dc0fd879852aac1d
2013-08-06 14:17:13 -07:00
James Zern
e247ab09a6
variance_test: add missing ClearSystemState...
...
...to recently added SubpelVarianceTest
Change-Id: I8775e39fd5dbfba81ad42b79b47bf6dd6ca8cc0e
2013-06-26 18:32:21 -07:00
Ronald S. Bultje
ac6ea2ab91
Allocate memory using appropriate expected alignment in unit tests.
...
Fixes crashes of test_libvpx on 32-bit Linux.
Change-Id: If94e7628a86b788ca26c004861dee2f162e47ed6
2013-06-21 17:03:57 -07:00
James Zern
cc774c8bb0
variance_test: use REGISTER_STATE_CHECK
...
Change-Id: Id54ad9a781634f075e990d5bade5be8490959975
2013-06-21 14:30:08 -07:00
Ronald S. Bultje
1e6a32f1af
SSE2/SSSE3 optimizations and unit test for sub_pixel_avg_variance().
...
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
2013-06-20 15:59:48 -07:00
Ronald S. Bultje
8fb6c58191
Implement sse2 and ssse3 versions for all sub_pixel_variance sizes.
...
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
2013-06-20 09:34:25 -07:00
James Zern
5b756748fd
tests: clear system state after non-API calls
...
add ClearSystemState() to reset MMX registers avoiding corrupting
subsequent tests.
Change-Id: I668deb09aa7aa467709776e5819f936910698bc0
2013-06-18 11:32:27 -07:00
Yunqing Wang
f4fcfe3075
Optimize variance functions
...
Added SSE2 version of variance functions for super blocks.
Change-Id: Ibeaae8771ca21c99d41dd74067574a51e97b412d
2013-05-22 10:29:38 -07:00
James Zern
1711cf2dbb
add vp8 variance test
...
Change-Id: I4e94ee2c4e2360d6a11a454c323f2899c1bb6f72
2013-02-22 16:25:14 -08:00
John Koleszar
fcccbcbb39
Add vp9_ prefix to all vp9 files
...
Support for gyp which doesn't support multiple objects in the same
static library having the same basename.
Change-Id: Ib947eefbaf68f8b177a796d23f875ccdfa6bc9dc
2012-11-27 14:12:30 -08:00
John Koleszar
a9c7597adc
support building vp8 and vp9 into a single lib
...
Change-Id: Ib8f8a66c9fd31e508cdc9caa662192f38433aa3d
2012-11-15 10:46:17 -08:00
James Zern
984734436d
Fix variance (signed integer) overflow
...
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:
1698234fea3556
2012-11-06 23:06:44 -08:00
