1. 09 Feb, 2013 1 commit
    • John Koleszar's avatar
      Replace as_mv struct with array · 7ca517f7
      John Koleszar authored
      Replace as_mv.{first, second} with a two element array, so that they
      can easily be processed with an index variable.
      
      Change-Id: I1e429155544d2a94a5b72a5b467c53d8b8728190
      7ca517f7
  2. 08 Jan, 2013 1 commit
  3. 06 Jan, 2013 1 commit
  4. 26 Dec, 2012 1 commit
  5. 18 Dec, 2012 1 commit
  6. 12 Dec, 2012 1 commit
    • Ronald S. Bultje's avatar
      Consistently use get_prob(), clip_prob() and newly added clip_pixel(). · 4d0ec7aa
      Ronald S. Bultje authored
      Add a function clip_pixel() to clip a pixel value to the [0,255] range
      of allowed values, and use this where-ever appropriate (e.g. prediction,
      reconstruction). Likewise, consistently use the recently added function
      clip_prob(), which calculates a binary probability in the [1,255] range.
      If possible, try to use get_prob() or its sister get_binary_prob() to
      calculate binary probabilities, for consistency.
      
      Since in some places, this means that binary probability calculations
      are changed (we use {255,256}*count0/(total) in a range of places,
      and all of these are now changed to use 256*count0+(total>>1)/total),
      this changes the encoding result, so this patch warrants some extensive
      testing.
      
      Change-Id: Ibeeff8d886496839b8e0c0ace9ccc552351f7628
      4d0ec7aa
  7. 28 Nov, 2012 1 commit
  8. 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
  9. 21 Nov, 2012 1 commit
  10. 18 Nov, 2012 1 commit
    • Jim Bankoski's avatar
      clean out some of the rtcd code. · f4871b6a
      Jim Bankoski authored
      This removes functions that are no longer needed and cleans up some warnings.
      
      Change-Id: I292a4c3694e9c1d68ce99cea390905b198434719
      f4871b6a
  11. 08 Nov, 2012 1 commit
  12. 06 Nov, 2012 2 commits
    • Yaowu Xu's avatar
      silent a lot of MSVC compiler warnings · 8a336b0d
      Yaowu Xu authored
      there are still a couple type of warning left, which are related to
      double constants assigned to float type. As those would be addressed
      by the conversion of transforms into integer version. This commit
      has left those un-dealt with.
      
      Change-Id: I48fd9b489c0c27ad6b543f4177423419f929f2bb
      8a336b0d
    • Jim Bankoski's avatar
      remove invoke_search macro · 7849aa20
      Jim Bankoski authored
      Removed invoke search from encoder
      
      Change-Id: I3d809b795abe6df0e71366edfe94026aaede14fb
      7849aa20
  13. 02 Nov, 2012 1 commit
    • John Koleszar's avatar
      vpx_scale: sync from master · 06f3e51d
      John Koleszar authored
      Update vpx_scale from current code in master, run style transform, fix
      lint warnings.
      
      Change-Id: I47eadeb5b6881d448ea3728537f9b8a5b5aac78e
      06f3e51d
  14. 01 Nov, 2012 2 commits
  15. 31 Oct, 2012 3 commits
  16. 22 Oct, 2012 2 commits
  17. 12 Sep, 2012 1 commit
    • Deb Mukherjee's avatar
      Adds feature for companded MV encoding · 2b26cf17
      Deb Mukherjee authored
      The high-precision (1/8) pel bit is turned off if the reference
      MV is larger than a threshold. The motivation for this patch is
      the intuition that if motion is likely large (as indicated by
      the reference), there is likley to be more motion blur, and as
      a result 1/8 pel precision would be wasteful both in rd sense
      as well as computationally.
      
      The feature is incorporated as part of the newmventropy experiment.
      There is a modest RD improvement with the patch. Overall the
      results with the newmventropy experiment with the threshold being
      16 integer pels are:
      
      derf: +0.279%
      std-hd: +0.617%
      hd: +1.299%
      yt: +0.822%
      
      With threshold 8 integer pels are:
      
      derf: +0.295%
      std-hd: +0.623%
      hd: +1.365%
      yt: +0.847%
      
      Patch: rebased
      Patch: rebase fixes
      
      Change-Id: I4ed14600df3c457944e6541ed407cb6e91fe428b
      2b26cf17
  18. 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
  19. 28 Aug, 2012 1 commit
  20. 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
  21. 09 Aug, 2012 1 commit
  22. 08 Aug, 2012 2 commits
  23. 07 Aug, 2012 1 commit
  24. 03 Aug, 2012 1 commit
    • 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
  25. 31 Jul, 2012 1 commit
    • Deb Mukherjee's avatar
      Merging and bug-fix in enhanced_interp experiment · 0ebf548c
      Deb Mukherjee authored
      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
      0ebf548c
  26. 27 Jul, 2012 1 commit
    • Johann's avatar
      Be consistent with SAD values · 11610551
      Johann authored
      SAD returns unsigned values. Make all the declarations the same.
      
      Remove bestsad initialization and check. It is always set to the
      result of a SAD call so it will never remain UINT_MAX
      
      Use ja instead of jg to test unsigned comparison instead of signed.
      
      Update test.
      
      Change-Id: I46336ab45f4e60fc37caf20bd36bc5782079c7a5
      11610551
  27. 26 Jul, 2012 1 commit
  28. 17 Jul, 2012 1 commit
  29. 11 Jun, 2012 1 commit
    • John Koleszar's avatar
      Fix pedantic compiler warnings · 0164a1cc
      John Koleszar authored
      Allows building the library with the gcc -pedantic option, for improved
      portabilty. In particular, this commit removes usage of C99/C++ style
      single-line comments and dynamic struct initializers. This is a
      continuation of the work done in commit 97b766a4, which removed most
      of these warnings for decode only builds.
      
      Change-Id: Id453d9c1d9f44cc0381b10c3869fabb0184d5966
      0164a1cc
  30. 27 Apr, 2012 2 commits
    • 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
    • Adrian Grange's avatar
      Removed MV costing from ARNR filtering · f0605f4b
      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 so that
      the mv costing is ignored without the requirement for
      dummy tables.
      
      Change-Id: I4196aa5c24da63f858ff54fbaa5fc85ae1f1957f
      f0605f4b
  31. 18 Apr, 2012 1 commit
  32. 11 Apr, 2012 1 commit
    • Adrian Grange's avatar
      Superblock encoding order · 9daf3154
      Adrian Grange authored
      This is the first patch to add superblock (32x32) coding
      order capabilities. It does not yet do any mode selection
      at the SB level, that will follow in a further patch.
      
      This patch encodes rows of SBs rather than
      MBs, each SB contains 2x2 MBs.
      
      Two intra prediction modes have been disabled since they
      require reconstructed data for the above-right MB which
      may not have been encoded yet (e.g. for the bottom right
      MB in each SB).
      
      Results on the one test clip I have tried (720p GIPS clip)
      suggest that it is somewhere around 0.2dB worse than the
      baseline version, so there may be bugs.
      
      It has been tested with no experiments enabled and with
      the following 3 experiments enabled:
        --enable-enhanced_interp
        --enable-high_precision_mv
        --enable-sixteenth_subpel_uv
      in each case the decode buffer matches the recon buffer
      (using "cmp" to compare the dumped/decoded frames).
      Note: Testing these experiments individually created
      errors.
      
      Some problems were found with other experiments but it
      is unclear what state these experiments are in:
        --enable-comp_intra_pred
        --enable-newentropy
        --enable-uvintra
      
      This code has not been extensively tested yet, so there
      is every likelihood that further bugs remain. I also
      intend to do some code cleanup & refactoring in tandem
      with the next patch that adds the 32x32 modes.
      
      Change-Id: I1eba7f740a70b3510df58db53464535ef881b4d9
      9daf3154
  33. 15 Mar, 2012 1 commit
    • Yaowu Xu's avatar
      WebM Experimental Codec Branch Snapshot · 6035da54
      Yaowu Xu authored
      This is a code snapshot of experimental work currently ongoing for a
      next-generation codec.
      
      The codebase has been cut down considerably from the libvpx baseline.
      For example, we are currently only supporting VBR 2-pass rate control
      and have removed most of the code relating to coding speed, threading,
      error resilience, partitions and various other features.  This is in
      part to make the codebase easier to work on and experiment with, but
      also because we want to have an open discussion about how the bitstream
      will be structured and partitioned and not have that conversation
      constrained by past work.
      
      Our basic working pattern has been to initially encapsulate experiments
      using configure options linked to #IF CONFIG_XXX statements in the
      code. Once experiments have matured and we are reasonably happy that
      they give benefit and can be merged without breaking other experiments,
      we remove the conditional compile statements and merge them in.
      
      Current changes include:
      * Temporal coding experiment for segments (though still only 4 max, it
        will likely be increased).
      * Segment feature experiment - to allow various bits of information to
        be coded at the segment level. Features tested so far include mode
        and reference frame information, limiting end of block offset and
        transform size, alongside Q and loop filter parameters, but this set
        is very fluid.
      * Support for 8x8 transform - 8x8 dct with 2nd order 2x2 haar is used
        in MBs using 16x16 prediction modes within inter frames.
      * Compound prediction (combination of signals from existing predictors
        to create a new predictor).
      * 8 tap interpolation filters and 1/8th pel motion vectors.
      * Loop filter modifications.
      * Various entropy modifications and changes to how entropy contexts and
        updates are handled.
      * Extended quantizer range matched to transform precision improvements.
      
      There are also ongoing further experiments that we hope to merge in the
      near future: For example, coding of motion and other aspects of the
      prediction signal to better support larger image formats, use of larger
      block sizes (e.g. 32x32 and up) and lossless non-transform based coding
      options (especially for key frames). It is our hope that we will be
      able to make regular updates and we will warmly welcome community
      contributions.
      
      Please be warned that, at this stage, the codebase is currently slower
      than VP8 stable branch as most new code has not been optimized, and
      even the 'C' has been deliberately written to be simple and obvious,
      not fast.
      
      The following graphs have the initial test results, numbers in the
      tables measure the compression improvement in terms of percentage. The
      build has  the following optional experiments configured:
      --enable-experimental --enable-enhanced_interp --enable-uvintra
      --enable-high_precision_mv --enable-sixteenth_subpel_uv
      
      CIF Size clips:
      http://getwebm.org/tmp/cif/
      HD size clips:
      http://getwebm.org/tmp/hd/
      (stable_20120309 represents encoding results of WebM master branch
      build as of commit#7a159071)
      
      They were encoded using the following encode parameters:
      --good --cpu-used=0 -t 0 --lag-in-frames=25 --min-q=0 --max-q=63
      --end-usage=0 --auto-alt-ref=1 -p 2 --pass=2 --kf-max-dist=9999
      --kf-min-dist=0 --drop-frame=0 --static-thresh=0 --bias-pct=50
      --minsection-pct=0 --maxsection-pct=800 --sharpness=0
      --arnr-maxframes=7 --arnr-strength=3(for HD,6 for CIF)
      --arnr-type=3
      
      Change-Id: I5c62ed09cfff5815a2bb34e7820d6a810c23183c
      6035da54