1. 03 Dec, 2012 1 commit
    • Frank Galligan's avatar
      vp9: Remove superfluous command. · 3e0ea7f6
      Frank Galligan authored
      - vpx_calloc is called on arf_not_zz above.
      - Note The removed vpx_memset call had an issue with sizeof.
      
      Change-Id: I86fd7a167d0a042e581e613e2a6c0b5e63073fc6
      3e0ea7f6
  2. 28 Nov, 2012 1 commit
    • Jim Bankoski's avatar
      remove postproc invokes · 85cba19e
      Jim Bankoski authored
      and some miscellaneous invoke left overs
      
      Change-Id: I63191b1bfd3bea4ce30cceaeb686ec850570fc43
      85cba19e
  3. 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
  4. 08 Nov, 2012 1 commit
  5. 06 Nov, 2012 1 commit
    • 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
  6. 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
  7. 01 Nov, 2012 3 commits
  8. 31 Oct, 2012 3 commits
  9. 30 Oct, 2012 1 commit
  10. 22 Oct, 2012 1 commit
  11. 16 Oct, 2012 1 commit
  12. 14 Oct, 2012 2 commits
  13. 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
  14. 16 Aug, 2012 1 commit
  15. 09 Aug, 2012 1 commit
  16. 07 Aug, 2012 1 commit
  17. 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
  18. 17 Jul, 2012 1 commit
  19. 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
  20. 15 May, 2012 1 commit
    • 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
  21. 12 Apr, 2012 1 commit
    • Yaowu Xu's avatar
      a set of minor fixes · 636b2f38
      Yaowu Xu authored
      This commit tries to address an issue related to the oddity shown on
      HD _mobcal clip, where some rather ugly blocks shown in the second
      frame at low-mid bit rates if the third frame is not made a key frame
      by he encoder. The fixes include: 1)  made calls to sad_16x16 to be
      consistent with function prototype. 2) remove the error bias to intra
      and golden in mbgraph search. 3) changed the error accumulation on
      inter_segment encoding to avoid potential out-of-range. 1) has no
      effect on encoding results.
      
      Encoding test show that the overall effect of the commit helps about
      .2%(HD) to .3%(cif)
      
      Change-Id: I930975a2d0c06252f01c39e0a02351529774e30b
      636b2f38
  22. 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
  23. 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
  24. 01 Mar, 2012 1 commit
  25. 28 Feb, 2012 1 commit
    • Deb Mukherjee's avatar
      Initial refactoring of high_precision mv code. · 3e1cad9c
      Deb Mukherjee authored
      This is the first patch for refactoring of the code related to
      high-precision mv, so that 1/4 and 1/8 pel motion vectors can
      co-exist in the same bit-stream by use of a frame level flag.
      The current patch works fine for only use of 1/4th and
      only use of 1/8th pel mv, but there are some issues with the
      mode switching in between. Subsequent patches on this change Id
      will fix the remaining issues.
      
      Patch 2: Adds fixes to make sure that multiple mv precisions can
      co-exist in the bit-stream. Frame level switching has been tested
      to work correctly.
      
      Patch 3: Fixes lines exceeding 80 char
      
      Patch 4:
      http://www.corp.google.com/~debargha/vp8_results/enhinterp.html
      
      Results on derf after ssse3 bugfix, compared to everything
      enabled but the 8-tap, 1/8-subpel and 1/16-subpel uv. Overall the
      gains are about 3% now. Hopefully there are no more bugs lingering.
      Apparently the sse3 bug affected the quartel subpel results more than
      the eighth pel ones (which is understandabale because one bad predictor
      due to the bug, matters less if there are a lot more subpel options
      available as in the 1/8 subpel case).
      The results in the 4th column correspond to the current settings.
      The first two columns correspond to two settings of adaptive switching
      of the 1/4 or 1/8 subpel mode based on initial Q estimate. These
      do not work as good as just using 1/8 all the time yet.
      
      Change-Id: I3ef392ad338329f4d68a85257a49f2b14f3af472
      3e1cad9c
  26. 03 Feb, 2012 1 commit
    • Paul Wilkins's avatar
      Reference frame prediction: · f0459549
      Paul Wilkins authored
      Extended prediction and coding of reference frame where
      a subset of options are flagged as available at the segment level.
      
      Updated copyright notices.
      
      Switch to SAD in mbgraph code as SATD problematic for the
      foreground and background separation as it can ignore large DC shifts.
      
      Change-Id: I661dbbb2f94f3ec0f96bb928c1655e5e415a7de1
      f0459549
  27. 26 Jan, 2012 1 commit
  28. 18 Jan, 2012 1 commit
  29. 17 Jan, 2012 1 commit
    • Paul Wilkins's avatar
      Rate control on static scenes plus Y2dc delta Q fix. · cf561bad
      Paul Wilkins authored
      A problem can arise on static clips with force key frames where
      attempts to avoid popping lead to a progressive reduction in key
      frame Q that ultimately may lead to unexpected overspend against
      the  rate target.
      
      The changes in this patch help to insure that in such clips the
      quality of the key frames across the clip is more uniform (rather
      than starting bad and getting better - especially at low target rates).
      
      This patch also includes a fix that removes a delta on the Y2DC
      when the baseline q index < 4 as this is no longer needed.
      
      There is also a fix to try and prevent repeat single step Q adjustment in
      the recode loop leading to lots of recodes, especially where the use
      of forced skips as part of segmentation has made the impact of Q on
      the number of bits generated much smaller.
      
      Patch 2: Amend "last_boosted_qindex" calculation for arf overlay frames.
      
      Change-Id: Ia1feeb79ed8ed014e4239994fcf5e58e68fd9459
      cf561bad
  30. 23 Dec, 2011 1 commit
  31. 09 Dec, 2011 1 commit
    • Adrian Grange's avatar
      Fix out of bounds read in update_mbgraph_frame_stats · 95b4cf05
      Adrian Grange authored
      update_mbgraph_frame_stats used xd->mode_info_context
      before it had been setup, resulting in potentially
      random accesses of uninitialized memory.
      
      This fix allocates a local MODE_INFO structure to hold
      the data generated in the function.
      
      Change-Id: Ic9e75610008ce0e2d690e8e583c21582fee6fc45
      95b4cf05
  32. 28 Nov, 2011 1 commit
  33. 24 Oct, 2011 2 commits
    • Paul Wilkins's avatar
      Segmentation Features; · 23701f4f
      Paul Wilkins authored
      Only encode sign bit for feature data that can have a sign.
      
      Tweaks to the test segmentation rules so that it now actually gives
      a net benefit on the derf set of about 0.4% though much higher
      on some clips at the low end.
      
      Change-Id: I8e61f1aebf41c9037db7e67e2f8975aa18a0c986
      23701f4f
    • Paul Wilkins's avatar
      Further segment feature extensions. · 01ce04bc
      Paul Wilkins authored
      This quite large check in includes the following:
      
      Merge in some code from Ronald (mbgraph.c) that scans a Gf/arf group.
      This is used as a basis for a simple segmentation for the normal frames
      in a gf/arf group. This code also uses satd functions from Yaowu.
      
      Adds functionality for coding the latest possible position of an EOB for
      blocks in the segment. (Currently 0-15 only, hence just for 4x4 dct).
      Where the EOB position is 0 this acts like "skip" and the normal coding
      of skip at the per mb level is disabled.
      
      Added functions (seg_common.c) for setting and reading segment feature
      elements. These may want to be optimized away at some point but while the
      mecahnism is in a state of flux they provide a single location for making
      changes and keep things a bit cleaner.
      
      This is still proof of concept code. Currently the tested feature set:-
      
      Quantizer,
      Loop Filter level,
      Reference frame,
      Prediction Mode,
      EOB end stop.
      
      TBD:-
      
      Add functions for setting and reading the feature data with range
      and validity checking.
      
      Handling of signed and unsigned feature data. At the moment all is assumed
      to be signed and a sign bit is coded but many cannot be negative.
      
      Correct handling of EOB feature with intra coded blocks.
      
      Testing/trapping of legal/illegal ref frame and mode combinations.
      
      Transform size switch plus merge and test with 8c8 DCT work
      
      Merge and test with Sumans Segmenation coding optimizations
      
      Change-Id: Iee12e83661c7abbd1e0ce6810915eb4ec35e2d8e
      01ce04bc