generic-library/vpx
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6 Commits

Author SHA1 Message Date
Johann
9fa24f03b5 re-enable vpx_comp_avg_pred_sse2 
Buffers on 32 bit x86 builds only guaranteed 8 byte alignment. Fixed
with "AvgPred test: use aligned buffers" and "sad avg: align
intermediate buffer"

Also re-enable asserts on the C version.

BUG=webm:1390

Change-Id: I93081f1b0002a352bb0a3371ac35452417fa8514
 2017-04-17 08:40:43 -07:00
Johann Koenig
9e19102972 Merge "AvgPred test: use aligned buffers" 2017-04-17 15:36:41 +00:00
Johann
e3b2710b04 AvgPred test: use aligned buffers 
BUG=webm:1390

Change-Id: Idb6d1ce119a09c5e7c9f3c58bbbae3de63463d1d
 2017-04-14 12:49:56 -07:00
Johann
eaa7cdf05d Disable vpx_comp_avg_pred_sse2 
Failures on windows:
unknown file: error: SEH exception with code 0xc0000005 thrown in the
test body.

Alignment check errors on linux:
test_libvpx: ../libvpx/vpx_dsp/variance.c:230: void
vpx_comp_avg_pred_c(uint8_t *, const uint8_t *, int, int, const uint8_t
*, int): Assertion `((intptr_t)comp_pred & 0xf) == 0' failed.

BUG=webm:1390

Change-Id: I5eed5381c0f1a8fe594a128eb415e77232f544ea
 2017-04-14 08:43:06 -07:00
Johann
28a8622143 vpx_comp_avg_pred: sse2 optimization 
Provides over 15x speedup for width > 8.

Due to smaller loads and shifting for width == 8 it gets about 8x
speedup.

For width == 4 it's only about 4x speedup because there is a lot of
shuffling and shifting to get the data properly situated.

BUG=webm:1390

Change-Id: Ice0b3dbbf007be3d9509786a61e7f35e94bdffa8
 2017-04-13 08:44:52 -07:00
Johann
6e99ed72a5 vpx_comp_avg_pred: add test 
BUG=webm:1389

Change-Id: I23cd65f1939db026958ccb5d70b8c5cc9aa5bc51
 2017-03-28 14:11:14 -07:00