1. 12 Nov, 2012 1 commit
    • Paul Wilkins's avatar
      New inter mode context · 2669f42b
      Paul Wilkins authored
      This change is a fix / extension of the newbestrefmv
      experiment. As such it is presented without IFDEF.
      
      The change creates a new context for coding inter modes
      in vp9_find_mv_refs(). This replaces the context that
      was previously calculated in vp9_find_near_mvs().
      The new context is unoptimized and not necessarily
      any better at this stage (results pending), but eliminates
      the need for a legacy call to vp9_find_near_mvs().
      Based on numbers from Scott, this could help decode
      speed by several %.
      
      In a later patch I will add support for forward update of
      context (assuming this helps) and refine the context as
      necessary.
      
      Change-Id: I1cd991b82c8df86cc02237a34185e6d67510698a
      2669f42b
  2. 10 Nov, 2012 1 commit
    • Deb Mukherjee's avatar
      New b-intra mode where direction is contextual · d01357bb
      Deb Mukherjee authored
      Preliminary patch on a new 4x4 intra mode B_CONTEXT_PRED where the
      dominant direction from the context is used to encode. Various decoder
      changes are needed to support decoding of B_CONTEXT_PRED in conjunction
      with hybrid transforms since the scan order and tokenization depends on
      the actual direction of prediction obtained from the context. Currently
      the traditional directional modes are used in conjunction with the
      B_CONTEXT_PRED, which also seems to provide the best results.
      
      The gains are small - in the 0.1% range.
      
      Change-Id: I5a7ea80b5218f42a9c0dfb42d3f79a68c7f0cdc2
      d01357bb
  3. 01 Nov, 2012 2 commits
  4. 31 Oct, 2012 2 commits
  5. 23 Oct, 2012 1 commit
    • Deb Mukherjee's avatar
      Merging in the Switchable interp experiment · 53731197
      Deb Mukherjee authored
      There is a macro DEFAULT_INTERP_FILTER defined in encoder/onyx_if.c that
      is set as EIGHTTAP for now - so SWITCHABLE is not really used. Ideally,
      this should be SWITCHABLE but that would make the encoder quite a bit slower.
      We will change the default filter to SWITCHABLE once we find a faster way to
      search for switchable filters.
      
      Change-Id: Iee91832cdc07e6e14108d9b543130fdd12fc9874
      53731197
  6. 22 Oct, 2012 3 commits
  7. 16 Oct, 2012 2 commits
  8. 14 Oct, 2012 2 commits
  9. 11 Oct, 2012 2 commits
  10. 10 Oct, 2012 1 commit
    • Jim Bankoski's avatar
      convert copy16x16 to rtcd · 89f060e8
      Jim Bankoski authored
      Convert copy16x16 from invoke to rtcd.  The first in a long
      string of converts.
      
      Change-Id: I296b0aa32f40e9fb649f7a3cb914a4e5300cad63
      89f060e8
  11. 09 Oct, 2012 1 commit
    • Ronald S. Bultje's avatar
      Selectable transform size try 2. · 9ca3c8b2
      Ronald S. Bultje authored
      Results: derf (vanilla or +hybridtx) +0.2% and (+hybrid16x16
      or +tx16x16) +0.7%-0.8%; HD (vanilla or +hybridtx) +0.1-0.2%
      and (+hybrid16x16 or +tx16x16) +1.4%, STD/HD (vanilla or +hybridtx)
      about even, and (+hybrid16x16 or +tx16x16) +0.8-1.0%.
      
      Change-Id: I03899e2f7a64e725a863f32e55366035ba77aa62
      9ca3c8b2
  12. 27 Sep, 2012 1 commit
    • Deb Mukherjee's avatar
      Entropy coding for hybrid transform · 3f5d60b3
      Deb Mukherjee authored
      Separates the entropy coding context models for 4x4, 8x8 and 16x16
      ADST variants.
      
      There is a small improvement for HD (hd/std-hd) by about 0.1-0.2%.
      Results on derf/yt are about the same, probably because there is not
      enough statistics.
      
      Results may improve somewhat once the initial probability tables are
      updated for the hybrid transforms which is coming soon.
      
      Change-Id: Ic7c0c62dacc68ef551054fdb575be8b8507d32a8
      3f5d60b3
  13. 13 Sep, 2012 1 commit
  14. 06 Sep, 2012 1 commit
    • Deb Mukherjee's avatar
      New motion vector entropy coding · 00f9eb65
      Deb Mukherjee authored
      Adds a new experiment with redesigned/refactored motion vector entropy
      coding. The patch also takes a first step towards separating the
      integer and fractional pel components of a MV. However the fractional
      pel encoding still depends on the integer pel part and so they are
      not fully independent. Further experiments are in progress to see
      how much they can be decoupled without affecting performance.
      All components including entropy coding/decoding, costing for MV
      search, forward updates and backward updates to probability tables,
      have been implemented.
      
      Results so far:
      derf: +0.19%
      std-hd: +0.28%
      yt: +0.80%
      hd: +1.15%
      
      Patch: Simplifies the fractional pel models:
      derf: +0.284%
      std-hd: +0.289%
      yt: +0.849%
      hd: +1.254%
      
      Patch: Some changes in the models, rebased.
      derf: +0.330%
      std-hd: +0.306%
      yt: +0.816%
      hd: +1.225%
      
      Change-Id: I646b3c48f3587f4cc909639b78c3798da6402678
      00f9eb65
  15. 30 Aug, 2012 1 commit
    • Jingning Han's avatar
      hybrid transform of 16x16 dimension · de6dfa6b
      Jingning Han authored
      Enable ADST/DCT of dimension 16x16 for I16X16 modes. This change provides
      benefits mostly for hd sequences.
      
      Set up the framework for selectable transform dimension.
      
      Also allowing quantization parameter threshold to control the use
      of hybrid transform (This is currently disabled by setting threshold
      always above the quantization parameter. Adaptive thresholding can
      be built upon this, which will further improve the coding performance.)
      
      The coding performance gains (with respect to the codec that has all
      other configuration settings turned on) are
      
      derf:   0.013
      yt:     0.086
      hd:     0.198
      std-hd: 0.501
      
      Change-Id: Ibb4263a61fc74e0b3c345f54d73e8c73552bf926
      de6dfa6b
  16. 20 Aug, 2012 1 commit
    • Ronald S. Bultje's avatar
      Superblock coding. · 5d4cffb3
      Ronald S. Bultje authored
      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
      5d4cffb3
  17. 03 Aug, 2012 2 commits
    • Deb Mukherjee's avatar
      Merging in high_precision_mv experiment · 2af5473a
      Deb Mukherjee authored
      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
      2af5473a
    • Daniel Kang's avatar
      16x16 DCT blocks. · fed8a183
      Daniel Kang authored
      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
      fed8a183
  18. 02 Aug, 2012 1 commit
  19. 30 Jul, 2012 1 commit
    • Deb Mukherjee's avatar
      Adds support for switchable interpolation filters. · 52597441
      Deb Mukherjee authored
      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
      52597441
  20. 27 Jul, 2012 1 commit
    • Deb Mukherjee's avatar
      Merges several experiments · 9984a155
      Deb Mukherjee authored
      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
      9984a155
  21. 17 Jul, 2012 1 commit
  22. 27 Jun, 2012 1 commit
    • Adrian Grange's avatar
      Added Prediction Filter to Mode Selection · bbc926dc
      Adrian Grange authored
      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
      bbc926dc
  23. 26 Jun, 2012 1 commit
    • Deb Mukherjee's avatar
      Continued adaptive entropy coding · f3dff402
      Deb Mukherjee authored
      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
      f3dff402
  24. 15 Jun, 2012 1 commit
    • Deb Mukherjee's avatar
      Adaptive entropy coding of coefficients, modes, mv. · 1fe85a35
      Deb Mukherjee authored
      This patch incorporates adaptive entropy coding of coefficient tokens,
      and mode/mv information based on distributions encountered in a frame.
      Specifically, there is an initial forward update to the probabilities
      in the bitstream as before for coding the symbols in the frame, however
      at the end of decoding each frame, the forward update to the
      probabilities is reverted and instead the probabilities are updated
      towards the actual distributions encountered within the frame.
      The amount of update is weighted by the number of hits within each
      context.
      
      Results on derf/hd/std-hd are all up by 1.6%.
      
      On derf, the most of the gains come from coefficients, however for the
      hd and std-hd sets, the most of the gains come from the mode/mv
      information updates.
      
      Change-Id: I708c0e11fdacafee04940fe7ae159ba6844005fd
      1fe85a35
  25. 08 May, 2012 1 commit
    • Yaowu Xu's avatar
      a number of fixes to entropy stats collection · 54cf1d9a
      Yaowu Xu authored
      1. block types
      There are only three types of blocks for 8x8 transformed MBs, i.e. Y
      block with DC does not exist for 8x8 transformed MBs as all MB using
      8x8 transform have 2nd order haar transform. This commit introduced
      a new macro BLOCK_TYPES_8X8 to reflect such fact.
      
      2. context counters
      This commit also fixed the mixed of context_counters between 4x4 and
      8x8 transformed MBs. The mixed use of the counters leads me to think
      the existing the context probabilities were not properly generated
      from 8x8 transformed MBs.
      
      3. redundant collecting in recoding
      The commit also corrected the code that accumulates entropy stats by
      making sure stats only collected for final packing, not during the
      recode loop
      
      Change-Id: I029f09f8f60bd0c3240cc392ff5c6d05435e322c
      54cf1d9a
  26. 04 May, 2012 1 commit
    • Attila Nagy's avatar
      Make global data const · f039a85f
      Attila Nagy authored
      Removes all runtime initialization of global data. This commit is a
      squashed version of the following series cherry-picked from master.
      This is necessary because of a change that was merged to the tester
      that depends on the scaler being moved to the RTCD framework, which
      is a worthwhile thing to include in Eider anyway.
      
        - a91b42f0 Makes all global data in entropy.c const
        - b35a0db0 Makes all global data in tokenize.c const
        - 441cac8e Makes all mode token tables const
        - 5948a021 Ports vpx_xcaler to new RTCD method
        - 317d4244 Makes all mode token tables const part 2
      
      Change-Id: Ifeaea24df2b731e7c509fa6c6ef6891a374afc26
      f039a85f
  27. 26 Apr, 2012 1 commit
    • Attila Nagy's avatar
      Moves error concealment allocations from common parts to decoder · 24e7b1b9
      Attila Nagy authored
      The backup MODE_INFO buffer used in the error concealment was
      allocated in the codec common parts allocation even though this is a
      decoder only resource. Moved the allocation to the decoder side.
      No need to update_mode_info_border as mode_info buffers are zero
      allocated.
      
      This fixes also a potential memory leak as the EC overlaps buffer was not
      properly released before reallocation after a frame size change.
      
      Change-Id: I12803d3e012308d95669069980b1c95973fb775f
      24e7b1b9
  28. 25 Apr, 2012 2 commits
    • Yaowu Xu's avatar
      Merge QIMODE experiment · a16608ab
      Yaowu Xu authored
      This commit merge the QI mode experiment. As the experiment affects
      the encoding of intra coding modes on key frame only, the overall
      effect of the experiment on encoding tests is insignificant.
      
      Change-Id: I9e4e3933adface88867ad429cee3986e529c511d
      a16608ab
    • Yaowu Xu's avatar
      Merge UVINTRA experiment · c1814d26
      Yaowu Xu authored
      The commit merges the UVINTRA experiment and removed the related
      macros. The overall effect of the experiment is a small gain (.1%
      on derf)
      
      Change-Id: Ia34b3312fb9b5b34c9ba111bf0fa78c6f78ac80b
      c1814d26
  29. 23 Apr, 2012 2 commits
  30. 19 Apr, 2012 1 commit
    • Attila Nagy's avatar
      Makes all mode token tables const · 441cac8e
      Attila Nagy authored
      Mode token tabels precalculated in entropymode.c.
      Removes vp8_initialize_common()as all common global data
      is precalculated const now.
      
      Change-Id: I9b2ccc883e4f618069e1bc180dad3a823394eb73
      441cac8e