1. 16 Jan, 2013 1 commit
    • John Koleszar's avatar
      Start to anonymize reference frames · da832a80
      John Koleszar authored
      Remove lst_fb_idx, gld_fb_idx, alt_fb_idx, refresh_last_frame,
      refresh_golden_frame, refresh_alt_ref_frame from common. Gold/Alt are
      encode side conventions. From the decoder's perspective, we want to be
      dealing with numbered references.
      
      Updates to active_ref 2 signal mode context switches, vestigial from
      refresh_alt_ref_frame. This needs some clean up to make sense with
      increased numbers of reference frames, as well as reimplementing the
      swapping of alt/golden which was previously done using the
      buffer-to-buffer copy mechanism removed in an earlier commit.
      
      Change-Id: I7334445158b7666f9295d2a2dd22aa03f4485f58
      da832a80
  2. 14 Jan, 2013 1 commit
    • Yaowu Xu's avatar
      Fix compiler warnings · 113005b1
      Yaowu Xu authored
      The warnings caused verify failure with gerrit for several  commits
      
      Change-Id: I030df8638bd69b8783a3ac58e720ff9f0bfd546c
      113005b1
  3. 10 Jan, 2013 2 commits
  4. 09 Jan, 2013 1 commit
    • Adrian Grange's avatar
      New prediction filter · 7d6b5425
      Adrian Grange authored
      This patch removes the old pred-filter experiment and replaces it
      with one that is implemented using the switchable filter framework.
      
      If the pred-filter experiment is enabled, three interopolation
      filters are tested during mode selection; the standard 8-tap
      interpolation filter, a sharp 8-tap filter and a (new) 8-tap
      smoothing filter.
      
      The 6-tap filter code has been preserved for now and if the
      enable-6tap experiment is enabled (in addition to the pred-filter
      experiment) the original 6-tap filter replaces the new 8-tap smooth
      filter in the switchable mode.
      
      The new experiment applies the prediction filter in cases of a
      fractional-pel motion vector. Future patches will apply the filter
      where the mv is pel-aligned and also to intra predicted blocks.
      
      Change-Id: I08e8cba978f2bbf3019f8413f376b8e2cd85eba4
      7d6b5425
  5. 08 Jan, 2013 1 commit
  6. 07 Jan, 2013 2 commits
  7. 06 Jan, 2013 1 commit
  8. 03 Jan, 2013 1 commit
    • Adrian Grange's avatar
      New interpolation filter selection algorithm · 259b8008
      Adrian Grange authored
      Old Scheme:
      When SWITCHABLE filter selection is enabled the encoder
      evaluates the use of each interpolation filter type and
      selects the best one to use at the MB level. A frame-
      level flag can be set to force the use of a particular
      filter type for all MBs in a frame if it is more efficient
      to encode that way. The logic here involved a Q dependent
      threshold that assumed that the second 8-tap filter was
      a high-pass filter. However, this requires a trip around
      the recode loop. If the frame-level flag indicates use
      of a particular filter, the other filters are not
      evaluated in the pick_mode loop.
      
      New Scheme:
      Each filter type is evaluated at the MB level and a record
      of the best filter is kept, irrespective of what filter
      is signaled at the frame-level. Once all MBs have been
      encoded, a decision is made as to what frame-level mode
      to set for the *next* frame. If one filter is used by 80%
      or more of the MBs, then this filter is forced since it
      is assumed that this will be more efficient if the
      next frame has similar characteristics. i.e. there is a
      one-frame lag between measuring the filter selection and
      setting the frame-level mode to use.
      
      Change-Id: I6a7e7ced8f27e120fafb99db2dc9c6293f8d20f7
      259b8008
  9. 02 Jan, 2013 1 commit
  10. 26 Dec, 2012 1 commit
  11. 18 Dec, 2012 1 commit
  12. 10 Dec, 2012 2 commits
    • Deb Mukherjee's avatar
      A bug fix related to switchable filters · 14a38a87
      Deb Mukherjee authored
      The switchable count update was mistakenly inside a macro.
      
      Change-Id: Iec04c52ad57034b88312dbaf05eee1f47ce265b3
      14a38a87
    • Paul Wilkins's avatar
      Further changes to mv reference code. · d1244659
      Paul Wilkins authored
      Some further changes and refactoring of mv
      reference code and selection of center point for
      searches. Mainly relates to not passing so many
      different local copies of things around.
      
      Some place holder comments.
      
      Change-Id: I309f10ffe9a9cde7663e7eae19eb594371c8d055
      d1244659
  13. 08 Dec, 2012 2 commits
    • Yaowu Xu's avatar
      experiment with CONTEXT conversion · ab480ced
      Yaowu Xu authored
      This commit changed the ENTROPY_CONTEXT conversion between MBs that
      have different transform sizes.
      
      In additioin, this commit also did a number of cleanup/bug fix:
      1. removed duplicate function vp9_fix_contexts() and changed to use
      vp8_reset_mb_token_contexts() for both encoder and decoder
      2. fixed a bug in stuff_mb_16x16 where wrong context was used for
      the UV.
      3. changed reset all context to 0 if a MB is skipped to simplify the
      logic.
      
      Change-Id: I7bc57a5fb6dbf1f85eac1543daaeb3a61633275c
      ab480ced
    • Ronald S. Bultje's avatar
      Introduce vp9_coeff_probs/counts/stats/accum types. · 885cf816
      Ronald S. Bultje authored
      Use these, instead of the 4/5-dimensional arrays, to hold statistics,
      counts, accumulations and probabilities for coefficient tokens. This
      commit also re-allows ENTROPY_STATS to compile.
      
      Change-Id: If441ffac936f52a3af91d8f2922ea8a0ceabdaa5
      885cf816
  14. 07 Dec, 2012 1 commit
    • Ronald S. Bultje's avatar
      32x32 transform for superblocks. · c456b35f
      Ronald S. Bultje authored
      This adds Debargha's DCT/DWT hybrid and a regular 32x32 DCT, and adds
      code all over the place to wrap that in the bitstream/encoder/decoder/RD.
      
      Some implementation notes (these probably need careful review):
      - token range is extended by 1 bit, since the value range out of this
        transform is [-16384,16383].
      - the coefficients coming out of the FDCT are manually scaled back by
        1 bit, or else they won't fit in int16_t (they are 17 bits). Because
        of this, the RD error scoring does not right-shift the MSE score by
        two (unlike for 4x4/8x8/16x16).
      - to compensate for this loss in precision, the quantizer is halved
        also. This is currently a little hacky.
      - FDCT and IDCT is double-only right now. Needs a fixed-point impl.
      - There are no default probabilities for the 32x32 transform yet; I'm
        simply using the 16x16 luma ones. A future commit will add newly
        generated probabilities for all transforms.
      - No ADST version. I don't think we'll add one for this level; if an
        ADST is desired, transform-size selection can scale back to 16x16
        or lower, and use an ADST at that level.
      
      Additional notes specific to Debargha's DWT/DCT hybrid:
      - coefficient scale is different for the top/left 16x16 (DCT-over-DWT)
        block than for the rest (DWT pixel differences) of the block. Therefore,
        RD error scoring isn't easily scalable between coefficient and pixel
        domain. Thus, unfortunately, we need to compute the RD distortion in
        the pixel domain until we figure out how to scale these appropriately.
      
      Change-Id: I00386f20f35d7fabb19aba94c8162f8aee64ef2b
      c456b35f
  15. 05 Dec, 2012 1 commit
    • Paul Wilkins's avatar
      Change to MV reference search. · 4cc657ec
      Paul Wilkins authored
      This patch reduces the cpu cost of the MV ref
      search by only allowing insert for candidates
      that would be in the current top 4.
      
      This could alter the outcome and slightly favors
      near candidates which are tested first but also
      limits the worst case loop count to 4 and means in
      many cases it will drop out and not happen.
      
      Change-Id: Idd795a825f9fd681f30f4fcd550c34c38939e113
      4cc657ec
  16. 03 Dec, 2012 1 commit
  17. 30 Nov, 2012 2 commits
    • Deb Mukherjee's avatar
      Adds switchable filters with superblocks · 66323307
      Deb Mukherjee authored
      Allows switchbale filters to be used without mismatch when the
      superblock experiment is on.
      
      Also removes a spurious clamping code in decodemv.c which causes
      rare encode/decode mismatches.
      
      Change-Id: I809d9ee0b2859552b613500b539a615515b863ae
      66323307
    • Jim Bankoski's avatar
      warnings in various experiments · 9f937042
      Jim Bankoski authored
      Change-Id: Ib5106d4772450f8026f823dd743f162ab833b1d6
      9f937042
  18. 29 Nov, 2012 3 commits
    • Jim Bankoski's avatar
      more unused variables. · cf671e27
      Jim Bankoski authored
      Change-Id: Ibe11e9275949b26a77fa9c8ac2e7c356ae533d5d
      cf671e27
    • Jim Bankoski's avatar
      more rtcd cleanup · 13dbf1fb
      Jim Bankoski authored
      Change-Id: Ieefd76e164ca4aa87597da0412977614ddfbacb7
      13dbf1fb
    • Deb Mukherjee's avatar
      Fixing 8x8/4x4 ADST for intra modes with tx select · 0742b1e4
      Deb Mukherjee authored
      This patch allows use of 8x8 and 4x4 ADST correctly for Intra
      16x16 modes and Intra 8x8 modes when the block size selected
      is smaller than the prediction mode. Also includes some cleanups
      and refactoring.
      
      Rebase.
      
      Change-Id: Ie3257bdf07bdb9c6e9476915e3a80183c8fa005a
      0742b1e4
  19. 28 Nov, 2012 1 commit
  20. 27 Nov, 2012 1 commit
    • John Koleszar's avatar
      Add vp9_ prefix to all vp9 files · fcccbcbb
      John Koleszar authored
      Support for gyp which doesn't support multiple objects in the same
      static library having the same basename.
      
      Change-Id: Ib947eefbaf68f8b177a796d23f875ccdfa6bc9dc
      fcccbcbb
  21. 25 Nov, 2012 1 commit
  22. 21 Nov, 2012 1 commit
  23. 16 Nov, 2012 3 commits
    • Ronald S. Bultje's avatar
      Support 32x32 intra modes in non-keyframe superblocks. · 5b11052a
      Ronald S. Bultje authored
      Change-Id: Icf8ad313c543462e523bff89690e5daa8d49bcc0
      5b11052a
    • Paul Wilkins's avatar
      Further experimentation with the mode context · a57dbd95
      Paul Wilkins authored
      Experiments with a larger set of contexts and some
      clean up to replace magic numbers regarding the
      number of contexts.
      
      The starting values and rate of backwards adaption
      are still suspect and based on a small set of tests.
      Added forwards adjustment of probabilities.
      
      The net result of adding the new context and forward
      update is small compared to the old context from the
      legacy find_near function.  (down a little on derf but
      up by a similar amount for HD)
      
      HOWEVER.... with the new context and forward update
      the impact of disabling the reverse update (which may be
      necessary in some use cases to facilitate parallel decoding)
      is hugely reduced.
      
      For the old context without forward update, the impact of
      turning off reverse update (Experiment was with SB off) was
      Derf - 0.9, Yt -1.89, ythd -2.75 and sthd -8.35. The impact was
      mainly at low data rates.
      
      With the new context and forward update enabled the impact
      for all the test sets was no more than 0.5-1% (again most at
      the low end).
      
      Change-Id: Ic751b414c8ce7f7f3ebc6f19a741d774d2b4b556
      a57dbd95
    • Deb Mukherjee's avatar
      Compound inter-intra experiment · 0c917fc9
      Deb Mukherjee authored
      A patch on compound inter-intra prediction.
      
      In compound inter-intra prediction, a new predictor for
      16x16 inter coded MBs are obtained by combining a single
      inter predictor with a 16x16 intra predictor, in a manner
      that the weight varies with distance from the top/left
      boundary. The current search strategy is to combine the best
      inter mode with the best intra mode obtained independently.
      
      Results so far:
      
      derf +0.31%
      yt +0.32%
      std-hd +0.35%
      hd +0.42%
      
      It is conceivable that the results would improve somewhat
      with a more thorough search strategy where all intra modes
      are searched given the best mv, or even a joint search for
      the best mv and the best intra mode.
      
      Change-Id: I7951f1ed0d6eb31ca32ac24d120f1585bcd8d79b
      0c917fc9
  24. 15 Nov, 2012 1 commit
  25. 14 Nov, 2012 2 commits
  26. 13 Nov, 2012 2 commits
  27. 10 Nov, 2012 3 commits
    • Ronald S. Bultje's avatar
      Fix data type for eobs[] array in SB 4x4 IDCT code. · dd9d4f9e
      Ronald S. Bultje authored
      This fixes encoder/decoder mismatches with the superblock experiment
      turned on whenever a superblock is encoded using the 4x4 transform.
      
      Change-Id: Iefec7055e8d25f8efdbba66c4261bbd322d335a3
      dd9d4f9e
    • Ronald S. Bultje's avatar
      Remove 'thismb' data pointer when superblock experiment is on. · 73987d14
      Ronald S. Bultje authored
      This should prevent inconsistent results between identical encodes with
      the superblock experiment turned on.
      
      Change-Id: I41a005fae53f2eb59736cc70041185fb7d63cfca
      73987d14
    • 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