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path: root/vp8/common/findnearmv.h
AgeCommit message (Collapse)Author
2012-09-07MV reference changesPaul Wilkins
Extend experiment to use both vectors from MBs coded using compound prediction as candidates. In final sort only consider best 4 candidates for now but make sure 0,0 is always one of them. Other minor changes to new MV reference code. Pass in Mv list to vp8_find_best_ref_mvs(). Change-Id: Ib96220c33c6b80bd1d5e0fbe8b68121be7997095
2012-08-17Fix warnings.Christian Duvivier
Change-Id: I01dd96da18fe22450bb372b10ba90eab52e29bdf
2012-08-10Refactor RD to take same codepath for single and comp predDaniel Kang
Change-Id: Id38baf1b89648ef534e28be72f583137871f920c
2012-08-07a new way of determining reference motion vectorYaowu Xu
Using surrounding reconstructed pixels from left and above to select best matching mv to use as reference motion vector for mv encoding. Test results: AVGPSNR GLBPSNR VPXSSIM Derf: 1.107% 1.062% 0.992% Std-hd:1.209% 1.176% 1.029% Change-Id: I8f10e09ee6538c05df2fb9f069abcaf1edb3fca6
2012-07-17Restyle codeJohn Koleszar
Approximate the Google style guide[1] so that that there's a written document to follow and tools to check compliance[2]. [1]: http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml [2]: http://google-styleguide.googlecode.com/svn/trunk/cpplint/cpplint.py Change-Id: Idf40e3d8dddcc72150f6af127b13e5dab838685f
2012-04-18Compound prediction for splitmv macroblocks.Ronald S. Bultje
Change-Id: I0af3395500b1cb0ed629249eb6636a0c9322cb18
2012-02-28Compound intra prediction (b_pred/4x4 only, for now),Ronald S. Bultje
Also remove duplicate build_intra_predictors_mby/uv(). Change-Id: I78607e7304952a9b962a5b25af9bb9c48692187b
2012-02-06Merged NEWNEAR experimentPaul Wilkins
This commit merges the NEWNEAR experiment such that it is effectively always on. The fact that there were changes in the threading code again highlights the need to strip out such features during the bitstream development phase as trying to maintain this code (especially as it is not being tested) slows the development cycle. Change-Id: I8b34950a1333231ced9928aa11cd6d6459984b65
2011-12-07Removed #if CONFIG_I8X8Yaowu Xu
This commit removed the macro CONFIG_I8X8, which was used to indicate the 8x8 intra prediction experiment, made the change fully merged in. Change-Id: Iafa4443781ce6e83f5591c12ba615a0e92ce0ea0
2011-12-07made vp8_mode_context adaptiveYaowu Xu
vp8_mode_contexts[] is an entropy table used to code inter mode choices. It was a fixed constant table. This commit made the entropy context adaptive. Tests on derf set showed very good consistent gains on all metrics: avg psnr .47%, overall psnr .46% and ssim .40%. http://www.corp.google.com/~yaowu/no_crawl/newModeContext.html Change-Id: Ia62b14485c948e2b74586118619c5eb2068b43b2
2011-12-02enabled 8x8 intra prediction modes on inter framesYaowu Xu
This commit enabled the usage of 8x8 intra prediction modes on inter frames. There are a few TODO items related to this: 1)baseline entropy need be calibrated; 2)cost of UV need to be done more properly rather than using decision only relying on Y; 3)Threshold for allowing picking 8x8 intra prediction should be lowered to lower than the B_PRED. Even with all the TODOs, tests showed consistent gain on derf set ~0.1% (PSNR:0.08% and SSIM:0.14%). It is assumed that 8x8 intra prediction will help more on large resolution clips, especially with above TODOs addressed. Change-Id: I398ada49dfc32575cfab962a569c2885111ae3ba
2011-11-28changed find_near_mvs search to include a mb from last frameYaowu Xu
This is an experiment to include a mv contribution from last frame to nearest and near mv definition. Initial test showed some small though consistent gain. latest patch slightly better result ~.13%-~.18%. TODO: the entropy used to encode the mode choice, i.e. the mv counts based conditional distribution of modes should be re-collected to reflect this change, it is expected that there is some further gain from that. Change-Id: Ief1e284a36d8aa56b49ae5b360c91419ec494fa4
2011-09-16add 8x8 intra prediction modesYaowu Xu
Patch 1 to Patch 3 is an initial implementation of 8x8 intra prediction modes, here are with the following assumptions: a. 8x8 has 4 prediction modes DC, H, V and TM b. UV 4x4 block use the same mode as corresponding 8x8 area c. i8x8 modes are enabled for key frame only for now Patch 4: d. removed debug code from previous patches Patch 5: e. added stats code to collect entropy stats and further cleaned up Patch 6: f. changed mode stats code to collect finer stats of modes Patch 7: g. normalized i8x8 modes distribution to total at 256 (8bits). Patch 8: h. fixed a bug in decoder and removed debug printf output. Patch 9: i. more cleanups to address paul's comment Patch 10: j. messy rebase/merges to bring the commit up to date. Tests on HD clips encoded with all key frame showing consistent gain on all clips and all metrics:~0.5%(psnr) and 0.6%(ssim): http://www.corp.google.com/~yaowu/no_crawl/i8x8hd_allkey_fixedq.html To build and test, configure with: --enable-experimental --enable-i8x8 Change-Id: I9813fe07ae48cab5fdb5d904bca022514ad01e7f
2011-06-13Populate bmi for B_PRED onlyScott LaVarnway
Small decode performance gain (~1%) on keyframes. No noticeable gains on encode. Also changed pick_intra4x4mby_modes() to read the above and left block modes for keyframes only. Change-Id: I1f4885252f5b3e9caf04d4e01e643960f910aba5
2011-05-24MODE_INFO size reductionScott LaVarnway
Declared the bmi in MODE_INFO as a union instead of B_MODE_INFO. This reduced the memory footprint by 518,400 bytes for 1080 resolutions. The decoder performance improved by ~4% for the clip used and the encoder showed very small improvements. (0.5%) This reduction was first mentioned to me by John K. and in a later discussion by Yaowu. This is WIP. Change-Id: I8e175fdbc46d28c35277302a04bee4540efc8d29
2011-05-12Using int_mv instead of MVScott LaVarnway
The compiler produces better assembly when using int_mv for assignments. The compiler shifts and ors the two 16bit values when assigning MV. Change-Id: I52ce4bc2bfbfaf3f1151204b2f21e1e0654f960f
2011-03-17Increase static linkage, remove unused functionsJohn Koleszar
A large number of functions were defined with external linkage, even though they were only used from within one file. This patch changes their linkage to static and removes the vp8_ prefix from their names, which should make it more obvious to the reader that the function is contained within the current translation unit. Functions that were not referenced were removed. These symbols were identified by: $ nm -A libvpx.a | sort -k3 | uniq -c -f2 | grep ' [A-Z] ' \ | sort | grep '^ *1 ' Change-Id: I59609f58ab65312012c047036ae1e0634f795779
2011-01-26Remove copies of same functionsYunqing Wang
Reduce the code size. Change-Id: I2e1998557a3c8776e262c442fd758c25e17aff7a
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
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