summaryrefslogtreecommitdiff
path: root/vp8/encoder/variance.h
AgeCommit message (Collapse)Author
2011-06-09remove one set of 16x16 variance funcationsYaowu Xu
call to this set of functions are replaced by var16x16. Change-Id: I5ff1effc6c1358ea06cda1517b88ec28ef551b0d
2011-06-06remove redundant functionsYaowu Xu
The encoder defined about 4 set of similar functions to calculate sum, variance or sse or a combination of them. This commit removed one set of these functions, get8x8var and get16x16var, where calls to the later function are replaced with var16x16 by using the fact on a 16x16 MB: variance == sse - sum*sum/256 Change-Id: I803eabd1fb3ab177780a40338cbd596dffaed267
2011-05-25Return sse value in vp8_variance SSE2 functionsYunqing Wang
Minor modification. Change-Id: I09511d38fd1451d5c4106a48acdb3f766ce59cb7
2011-04-29changed configure option name to reduce confusionYaowu Xu
Renamed configure option "enable-psnr" to "enable-internal-stats" to better reflect the purpose of the option and eliminate the confusion reported in http://code.google.com/p/webm/issues/detail?id=35 Change-Id: If72df6fdb9f1e33dab1329240ba4d8911d2f1f7a
2011-03-11vp8cx- alternate ssim function with optimizationsJim Bankoski
Change-Id: I91921b0a90dbaddc7010380b038955be347964b3
2010-10-27Full search SAD function optimization in SSE4.1Yunqing Wang
Use mpsadbw, and calculate 8 sad at once. Function list: vp8_sad16x16x8_sse4 vp8_sad16x8x8_sse4 vp8_sad8x16x8_sse4 vp8_sad8x8x8_sse4 vp8_sad4x4x8_sse4 (test clip: tulip) For best quality mode, this gave encoder a 5% performance boost. For good quality mode with speed=1, this gave encoder a 3% performance boost. Change-Id: I083b5a39d39144f88dcbccbef95da6498e490134
2010-10-27Fix half-pixel variance RTCD functionsJohn Koleszar
This patch fixes the system dependent entries for the half-pixel variance functions in both the RTCD and non-RTCD cases: - The generic C versions of these functions are now correct. Before all three cases called the hv code. - Wire up the ARM functions in RTCD mode - Created stubs for x86 to call the optimized subpixel functions with the correct parameters, rather than falling back to C code. Change-Id: I1d937d074d929e0eb93aacb1232cc5e0ad1c6184
2010-10-26Add half-pixel variance RTCD functionsJohn Koleszar
NEON has optimized 16x16 half-pixel variance functions, but they were not part of the RTCD framework. Add these functions to RTCD, so that other platforms can make use of this optimization in the future and special-case ARM code can be removed. A number of functions were taking two variance functions as parameters. These functions were changed to take a single parameter, a pointer to a struct containing all the variance functions for that block size. This provides additional flexibility for calling additional variance functions (the half-pixel special case, for example) and by initializing the table for all block sizes, we don't have to construct this function pointer table for each macroblock. Change-Id: I78289ff36b2715f9a7aa04d5f6fbe3d23acdc29c
2010-10-12Add const qualifiers to variance/SAD functions.Timothy B. Terriberry
These functions should never change their input, and there's no reason not to declare that. This allows them to be passed static const data. Change-Id: Ia49fe4b01e80e9afcb24b4844817694d4da5995c
2010-09-09Use WebM in copyright notice for consistencyJohn Koleszar
Changes 'The VP8 project' to 'The WebM project', for consistency with other webmproject.org repositories. Fixes issue #97. Change-Id: I37c13ed5fbdb9d334ceef71c6350e9febed9bbba
2010-06-18cosmetics: trim trailing whitespaceJohn Koleszar
When the license headers were updated, they accidentally contained trailing whitespace, so unfortunately we have to touch all the files again. Change-Id: I236c05fade06589e417179c0444cb39b09e4200d
2010-06-04LICENSE: update with latest textJohn Koleszar
Change-Id: Ieebea089095d9073b3a94932791099f614ce120c
2010-05-18Initial WebM releaseJohn Koleszar