1. 29 May, 2012 1 commit
    • Paul Wilkins's avatar
      Remove "est_max_qcorrection_factor" · f66747fe
      Paul Wilkins authored
      Removed the local scaling factor est_max_qcorrection_factor
      and related code to simplify estimateq calculation (little effect
      anyway)
      
      Cap range of total correction factor.
      
      Slight change to break out case to turn off arf.
      
      Change-Id: I748187737ba93cfadf016f3dfdf8d2741934067f
      f66747fe
  2. 25 May, 2012 2 commits
  3. 23 May, 2012 1 commit
    • Yaowu Xu's avatar
      changed the way that default probs for 8x8 is set. · e9818bb6
      Yaowu Xu authored
      The commit changed how baseline 8x8 coefficient probabilities are
      initialized, to be consistent with the initialization of baseline
      4x4 coefficient probabilities.
      
      The commit does not have any effect on compression.
      
      Change-Id: Ifb3902b5dc0b0c2e6dc3aa5d4a6589d528e58355
      e9818bb6
  4. 18 May, 2012 1 commit
  5. 17 May, 2012 2 commits
  6. 15 May, 2012 10 commits
    • Ronald S. Bultje's avatar
      Rewrite reference frame costing in the RD loop. · 0b8a95a0
      Ronald S. Bultje authored
      I now see I didn't write a very long description, so let's do it
      here then. We took a pretty big quality hit (0.1-0.2%) from my
      recent fix of the inversion of arguments to vp8_cost_bit() in the
      RD reference frame costing. I looked into it and basically the
      costing prevented us from switching reference frames. This is of
      course silly, since each frame codes its own prob_intra_coded, so
      using last frame cost indications as a limiting factor can never
      be right.
      
      Here, I've rewritten that code to estimate costings based partially
      on statistics from progress on current frame encoding. Overall,
      this gives us a ~0.2%-0.3% improvement over what we had previously
      before my argument-inversion-fix, and thus about ~0.4% over current
      git (on derf-set), and a little more (0.5-1.0%) on HD/STD-HD/YT.
      
      Change-Id: I79ebd4ccec4d6edbf0e152d9590d103ba2747775
      0b8a95a0
    • Paul Wilkins's avatar
      Further firstpass.c changes. · acf3c729
      Paul Wilkins authored
      base the static image test off a measure of 0,0 motion
      instead of the decay accumulator value.
      
      Change "transition to still detection" to compare the
      decay rate from successive frames.
      
      Minor tweak to the arf extra boost given based on the
      number of frames affected.
      
      Removed unused variable mod_err_per_mb_accumulator.
      
      Change-Id: Idd8360083ad409e45f133ce97dd2488259003e64
      acf3c729
    • Deb Mukherjee's avatar
      Adds new Directional Intra prediction modes. · c5ddb7f0
      Deb Mukherjee authored
      Adds 6 directional intra predictiom modes for 16x16 and 8x8 blocks.
      
      Change-Id: I25eccc0836f28d8d74922e4e9231568a648b47d1
      c5ddb7f0
    • Paul Wilkins's avatar
      520a7a25
    • Paul Wilkins's avatar
      545bc721
    • Paul Wilkins's avatar
      a1680ad3
    • Yaowu Xu's avatar
      Changed to use integer 8x8 dct · b22cc559
      Yaowu Xu authored
      The commit added an integer version of 8x8 forward DCT, based on the
      orginal forward DCT from VP6. The constants, roundings, and shifts
      were adjusted to improve the accuracy. The latest patch has a very
      similar accuracy in term of round trip error against the floating
      point version.
      
      It should be noted here that the purpose of the patch is to help
      encoding speed and facilitate all other experiments. There will be
      futher review in combination with inverse DCT before finalization.
      
      configure with "--enable--int_8x8fdct" to use the integer version
      
      Change-Id: I5a4f80507429f0e07cf02a13768ec81cbfddc5bc
      b22cc559
    • Paul Wilkins's avatar
      Move / re-factor some of boost calculation code. · ae989ae8
      Paul Wilkins authored
      Some marginal impact due to the fact that it makes use of
      arf more likely / stable even in hard sections.
      
      Change-Id: Ic72fda0f63eefc9433914b5d9cd374d515810129
      ae989ae8
    • Paul Wilkins's avatar
      Firstpass.c refactoring · 0529320a
      Paul Wilkins authored
      Removed unused function.
      
      Added tentative code to take error score of an older frame
      into account when calculating Q range. However, for now
      it is disabled pending merging other changes and testing.
      
      Change-Id: Ie89955e70319dac31b79e3b833e3352712a061ec
      0529320a
    • Paul Wilkins's avatar
  7. 14 May, 2012 4 commits
  8. 12 May, 2012 1 commit
    • Ronald S. Bultje's avatar
      Don't use compound prediction for golden frames based on alt-ref frames. · 959b296a
      Ronald S. Bultje authored
      These frames can force reference frame (arf), mode (zeromv) and skip,
      which means that if we use compound prediction (i.e. arf+last), we
      might use a blend of a perfect (arf) and an imperfect (last) predictor,
      leading to semi-garbage display and thus a huge drop in SSIM/PSNR (up
      to 10dB for some frames I analyzed).
      
      Gives a +0.2% gain on YT.
      
      Change-Id: If1f2b7899ad165684af3808fd379295e82558cbb
      959b296a
  9. 11 May, 2012 4 commits
  10. 10 May, 2012 1 commit
    • Yaowu Xu's avatar
      Reversible WHT pair · 7968d29f
      Yaowu Xu authored
      This commit changed the forward and the inverse 4x4 Walsh Hadamard
      transform to a new pair, where the inverse transform can pefectly
      reconstuct the input to forward transform. It also does so without
      changing the input and output value range. Even more, it does not
      change the complexity of the transforms.
      
      While it was not expected to improve the results of our current test,
      it does improve std-hd set by 0.2% on all metrics. No change on derf.
      
      Change-Id: Ie4f23ddd3a0f3c5fbe97fb58399f860031f99337
      7968d29f
  11. 09 May, 2012 1 commit
  12. 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
  13. 04 May, 2012 1 commit
  14. 02 May, 2012 2 commits
    • Yaowu Xu's avatar
      chagned the decoder band to match the encoder · 3b909a6f
      Yaowu Xu authored
      missed the decoder side in last commit
      
      Change-Id: Ie97f35189e93f78783e3d8072a36eea768beed27
      3b909a6f
    • Yaowu Xu's avatar
      slight adjustment to coef band definition · bd69b7d4
      Yaowu Xu authored
      This commit adjusted slightly the 4x4 coefficents band definition to
      better classify coefficients with similar distributions and usages.
      It helps derf set about .1%, it is alos slightly positive for std-hd
      set, where 4x4 blocks are used less frequently.
      
      The commit also removed a const array not in use.
      
      Change-Id: I78d16905d4036641ec905b0c32c190c1def5b249
      bd69b7d4
  15. 01 May, 2012 1 commit
  16. 30 Apr, 2012 3 commits
  17. 27 Apr, 2012 2 commits
    • Adrian Grange's avatar
    • Adrian Grange's avatar
      Removed MV costing from ARNR filtering · 393440db
      Adrian Grange authored
      The ARNR filter uses a motion compensated temporal filter,
      but the motion estimation implementation accounts for the
      cost of the mv in its decision making process. The ARNR
      filter uses a dummy cost table initialized to 0 as a way
      to ignore the mv costs (which are irrelevant to the filter).
      
      This CL modifies the ARNR filter implementation to so that
      the mv costing is ignored without the requirement for
      dummy tables.
      
      Change-Id: I0dd9620c3b70682f938b2a70912c11d4d7c9284c
      393440db
  18. 26 Apr, 2012 1 commit
    • Deb Mukherjee's avatar
      Adds search option for best interpolation filter. · acdda50a
      Deb Mukherjee authored
      Adds a speed feature to conduct a brute force search among a set of
      available interpolation filters for the best one in an RD sense.
      
      There is a gain of 0.4% on derf, 1.0% on Std-HD.
      
      Patch 2: A macro added to determine if the encoder state is reset
      for each new filter tried.
      
      Patch 3: rebase, also fixes a bug (decodframe.c) introduced by a
      couple of missing function pointer assignements.
      
      Patch 4: rebase.
      
      Change-Id: Ic9ccca9d8c35c6af557449ae867391a2f996cc29
      acdda50a
  19. 25 Apr, 2012 1 commit
    • 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