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2012-08-20Superblock coding.Ronald S. Bultje
This commit adds a pick_sb_mode() function which selects the best 32x32 superblock coding mode. Then it selects the best per-MB modes, compares the two and encodes that in the bitstream. The bitstream coding is rather simplistic right now. At the SB level, we code a bit to indicate whether this block uses SB-coding (32x32 prediction) or MB-coding (anything else), and then we follow with the actual modes. This could and should be modified in the future, but is omitted from this commit because it will likely involve reorganizing much more code rather than just adding SB coding, so it's better to let that be judged on its own merits. Gains on derf: about even, YT/HD: +0.75%, STD/HD: +1.5%. Change-Id: Iae313a7cbd8f75b3c66d04a68b991cb096eaaba6
2012-08-16Set a default mv entropy if no tokens are coded.Ronald S. Bultje
This doesn't affect the result, since there are no MVs coded using this entropy. It does, however, silence valgrind warnings about uninitialized variables. Change-Id: I6e21ba92df6ce5381bf58b8c349ef4373294a0b6
2012-08-15Merge "First partial snapshot of vectorized 8-tap filtering." into experimentalChristian Duvivier
2012-08-15First partial snapshot of vectorized 8-tap filtering.Christian Duvivier
About 3.5x faster, 30% overall encoder speedup. Rest of optimizations will come soon (see TODO section in filter_sse4.c). Change-Id: If18108048bfd5345fc942e8574e4c7f58e0e86e0
2012-08-15Code clean up.Paul Wilkins
Further cases of inconsistent naming convention. Change-Id: Id3411ecec6f01a4c889268a00f0c9fd5a92ea143
2012-08-14Fix warnings.Christian Duvivier
Change-Id: I4b911e4173da30c164bde7ea50bc80a70fbbb745
2012-08-14Fix build.Christian Duvivier
Change-Id: I27729a8631cffd54dfbae3ec0f07df7c883f7510
2012-08-14Shut up warnings added by -WundefDaniel Kang
Change-Id: I9c7ef4a75c37aa0e10df75e165e3066614c955ef
2012-08-14Merge "Some build fixes" into experimentalDeb Mukherjee
2012-08-14Merge "Changed to use reference mv as nearest mv" into experimentalYaowu Xu
2012-08-14Changed to use reference mv as nearest mvYaowu Xu
The reference motion vector selected by surrounding pixels that has the best matching score is used as nearest motion vector. The change has shown consistent gain on all test sets, compression gains range from .2% to .6%. The variation is largely dependent on various other experiments on or off. Change-Id: I5552e1c2f6fc57c3e8818a5ee41ffda89af05e75
2012-08-14Some build fixesDeb Mukherjee
Fixes two typos that breaks the build introduced in recent check-ins. Change-Id: I3f15f3c088c48a63fede8941c9a4ba05dd0403c2
2012-08-14Code clean up.Paul Wilkins
References to MACROBLOCKD that use "x" changed to "xd" to comply with convention elsewhere that x = MACROBLOCK and xd = MACROBLOCKD. Simplify some repeat references using local variables. Change-Id: I0ba2e79536add08140a6c8b19698fcf5077246bc
2012-08-13Combine optimize_b and optimize_b_8x8Daniel Kang
The 16x16 has not been done yet for speed reasons. Change-Id: I066e369a065674d58986e937344c9303fed19450
2012-08-10fix build problem for newbestrefmv experimentYaowu Xu
Change-Id: I7f531d55f076254c84402fed34af93fe3685fbdf
2012-08-10Refactor RD to take same codepath for single and comp predDaniel Kang
Change-Id: Id38baf1b89648ef534e28be72f583137871f920c
2012-08-09Refactor vp8_build_inter16x16_predictor functionsDaniel Kang
Change-Id: I4fceefe76b14bd38a358dc4356708f7981bab339
2012-08-09Merge "Merging in the sixteenth subpel uv experiment" into experimentalDeb Mukherjee
2012-08-08Merging in the sixteenth subpel uv experimentDeb Mukherjee
Merges this experiment in to make it easier to run tests on filter precision, vectorized implementation etc. Also removes an experimental filter. Change-Id: I1e8706bb6d4fc469815123939e9c6e0b5ae945cd
2012-08-08Merge "Partial import of "New RTCD implementation" from master branch." into ↵Christian Duvivier
experimental
2012-08-08Partial import of "New RTCD implementation" from master branch.Christian Duvivier
Latest version of all scripts/makefile but rtcd_defs.sh is empty, all existing functions are still selected using the old/current way. Change-Id: Ib92946a48a31d6c8d1d7359eca524bc1d3e66174
2012-08-08a tiny fix for MSVC buildYaowu Xu
Change-Id: Ib23b0711a4690e1edff3131ce48527b6805877fb
2012-08-08Cleanup and commenting of the sub-pixel interpolation functions. MostlyChristian Duvivier
as a preparation for the upcoming vectorized implementation. Change-Id: I0d1629943cee68fcb0ea8b6dd8aef265d050cc7a
2012-08-07A bit of temporary relief on encoder slownessYaowu Xu
The commit replaces run-time initialization of cosine constants with static constant values, which provides ~30% relief on slow speed. The real solution, however will be to implement integer versions of those functions that current use float/double. Change-Id: Ie3ff1793509653d78dd1aeaf88cc6737da1bc55f
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
2012-08-06Refactoring hybrid transform codingJingning Han
The forward and inverse hybrid transforms are now performed using single function modules, where the dimension is sent as argument. Added an inline function clip8b to clip the reconstruction pixels into range of 0-255. Change-Id: Id7d870b3e1aefc092721c80c0af6f641eb5f3747
2012-08-06Merge "fix msvc build" into experimentalYaowu Xu
2012-08-03Merging in high_precision_mv experimentDeb Mukherjee
Merged in the high_precision_mv experiment to make it easier to work on new mv encoding strategies. Also removed coef_update_probs3(). Change-Id: I82d3b0bb642419fe05dba82528bc9ba010e90924
2012-08-03Replacing the 8x8 DCT with 8x8 ADST/DCT for I8x8Jingning Han
Fixed the code review comments. Under the htrans8x8 experiment the 8X8 DCT in the I8X8 mode is replaced with a combination of 8X8 ADST and DCT. Overall coding gains with the htrans8x8 experiment are: derf: 0.486 std-hd: 1.040 hd: 1.063 yt: 0.506 Note that part of the gain comes from bigger transforms (8x8 instead of 4x4) and part comes from replacing the DCT wth the ADST. Change-Id: I92ca6bbfce11b4165d612b81d9adfad4d010c775
2012-08-03fix msvc buildYaowu Xu
Change-Id: I377d50cb347f50341ab6f5f456a6a64438bcb667
2012-08-03Merge "16x16 DCT blocks." into experimentalDaniel Kang
2012-08-03Merge "Merging and bug-fix in enhanced_interp experiment" into experimentalDeb Mukherjee
2012-08-0216x16 DCT blocks.Daniel Kang
Set on all 16x16 intra/inter modes Features: - Butterfly fDCT/iDCT - Loop filter does not filter internal edges with 16x16 - Optimize coefficient function - Update coefficient probability function - RD - Entropy stats - 16x16 is a config option Have not tested with experiments. hd: 2.60% std-hd: 2.43% yt: 1.32% derf: 0.60% Change-Id: I96fb090517c30c5da84bad4fae602c3ec0c58b1c
2012-08-02Define INT64_MAX for msvc to buildYaowu Xu
Change-Id: I6cb88d87b7549ded1de6ff9ef65ff958ad448999
2012-08-02Use 8x8 DCT transform for I8X8 prediction modeJingning Han
Apply 2D-DCT transform of dimension 8x8 to encode prediction residuals of I8X8 mode. Brought back block type 3 probability context model for 8x8 tokens, which is used for the coefficients of Y blocks in I8x8 modes. The coefficient costs estimate of I8X8 mode in rate-distortion is also changed appropriately. Performance results: derf: 0.246 yt: 0.114 std-hd: 0.730 hd: 0.670 Change-Id: If1d970eeb4e1827c9f0d2c5b27d33089b347ea27
2012-07-31Removed macros for merged experimentsAdrian Grange
Removed two macros corresponding to experiments that were merged into the main code. Change-Id: I894e8b509a2bb88557f9aba6f226ed7807745065
2012-07-31Merging and bug-fix in enhanced_interp experimentDeb Mukherjee
Merged the enhanced_interp experiment. Found and fixed a bug in the include files framework, whereby certain encoder files were still using the old INTERP_EXTEND value of 3 instead of 4. The thresholds for mv range mcomp.c need a small adjustment to prevent crashes. The results are more or less unchanged. Change-Id: Iac5008390f1efc97ce1102fbb5f8989c847fb579
2012-07-30Adds support for switchable interpolation filters.Deb Mukherjee
Allows for swtiching/setting interpolation filters at the MB level. A frame level flag indicates whether to use a specifc filter for the entire frame or to signal the interpolation filter for each MB. When switchable filters are used, the encoder chooses between 8-tap and 8-tap sharp filters. The code currently has options to explore other variations as well, which will be cleaned up subsequently. One issue with the framework is that encoding is slow. I tried to do some tricks to speed things up but it is still slow. Decoding speed should not be affected since the number of filter taps remain unchanged. With the current version, we are up 0.5% on derf on average but some videos city/mobile improve by close to 4 and 2% respectively. If we did a full-search by turning the SEARCH_BEST_FILTER flag on, the results are somewhat better. The framework can be combined with filtered prediction, and I seek feedback regarding that. Rebased. Change-Id: I8f632cb2c111e76284140a2bd480945d6d42b77a
2012-07-27Merges several experimentsDeb Mukherjee
The following five experiments are merged: newentropy newupdate adaptive_entropy (also includes a couple of parameter changes that improves results a little in common/entropymode.c and encoder/modecosts.c that were not merged from the internal branch) newintramodes expanded_coef_context Change-Id: I8a142a831786ee9dc936f22be1d42a8bced7d270
2012-07-24Use macro for filter extension lengthAdrian Grange
Replaced local definitions of the extension required by the filters with the globally defined value. Change-Id: If9e590a1f2e5b0bdc2d3e3c3f04aacbd3b09bfee
2012-07-19Adds hybrid transformJingning Han
Adds ADST/DCT hybrid transform coding for Intra4x4 mode. The ADST is applied to directions in which the boundary pixels are used for prediction, while DCT applied to directions without corresponding boundary prediction. Adds enum TX_TYPE in b_mode_infor to indicate the transform type used. Make coding style consistent with google style. Fixed the commented issues. Experimental results in terms of bit-rate reduction: derf: 0.731% yt: 0.982% std-hd: 0.459% hd: 0.725% Will be looking at 8x8 transforms next. Change-Id: I46dbd7b80dbb3e8856e9c34fbc58cb3764a12fcf
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
2012-07-09change to enable encoder to clamp UV motion vectorYaowu Xu
This is to avoid a rare encoder/decoder mismatch for MB using SPLITMV mode. In decoder, the UV mv can be determined to need clamp, but the flag is never set in encoder motion vector selection process, and the clamp is not done in encoding in encoder. Change-Id: I60520d3f790354c7855dadf03f0978ea9b77e2c0
2012-06-28Add lossless compression mode.Hui Su
This commit adds lossless compression capability to the experimental branch. The lossless experiment can be enabled using --enable-lossless in configure. When the experiment is enabled, the encoder will use lossless compression mode by command line option --lossless, and the decoder automatically recognizes a losslessly encoded clip and decodes accordingly. To achieve the lossless coding, this commit has changed the following: 1. To encode at lossless mode, encoder forces the use of unit quantizer, i.e, Q 0, where effective quantization is 1. Encoder also disables the usage of 8x8 transform and allows only 4x4 transform; 2. At Q 0, the first order 4x4 DCT/IDCT have been switched over to a pair of forward and inverse Walsh-Hadamard Transform (http://goo.gl/EIsfy), with proper scaling applied to match the range of the original 4x4 DCT/IDCT pair; 3. At Q 0, the second order remains to use the previous walsh-hadamard transform pair. However, to maintain the reversibility in second order transform at Q 0, scaling down is applied to first order DC coefficients prior to forward transform, and scaling up is applied to the second order output prior to quantization. Symmetric upscaling and downscaling are added around inverse second order transform; 4. At lossless mode, encoder also disables a number of minor features to ensure no loss is introduced, these features includes: a. Trellis quantization optimization b. Loop filtering c. Aggressive zero-binning, rounding and zero-bin boosting d. Mode based zero-bin boosting Lossless coding test was performed on all clips within the derf set, to verify that the commit has achieved lossless compression for all clips. The average compression ratio is around 2.57 to 1. (http://goo.gl/dEShs) Change-Id: Ia3aba7dd09df40dd590f93b9aba134defbc64e34
2012-06-27Added Prediction Filter to Mode SelectionAdrian Grange
Added the ability to optionally filter the prediction data when inter modes are selected (excludes SPLITMV, for now). The mode selection loop considers both the filtered and non-filtered prediction data when choosing mode. The filter can be turned on/off at the frame-level, or signaled for each MB. Change-Id: I1b783c71d95a361ab36c761b07e8a6b06bc36822
2012-06-25Continued adaptive entropy codingDeb Mukherjee
Incorporates mv_ref, mbsplit and second_mv into the adaptive entropy framework. The mv_ref framework has been modified from before. Adds some clean-ups and fixes. Results with the adaptive entropy experiment are currently up by +1.93% on derf; +2.33% std-hd and +1.87% yt-hd. Fixed a nasty intermittent bug. Change-Id: I4b1ac9f9483b48432597595195bfec05f31d1e39
2012-06-25Sign-extend input argument so it can be used in pointer arithmetic.Ronald S. Bultje
Change-Id: I6cbd4de96f9dcc783cef170bfd7652f6cbee36a2
2012-06-19Merge "Add comments to intra prediction probability tables." into experimentalRonald S. Bultje
2012-06-18Fix a bunch of warnings.Christian Duvivier
Change-Id: I883b4f63559c1cf66a25016e946b1b1ae98a20da
2012-06-18x86inc: Move x86inc to the correct location.Daniel Kang
Change-Id: I6802731a4d15feef5ce62993dc505ded55c40f7e
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