1. 15 Feb, 2013 2 commits
  2. 10 Jan, 2013 1 commit
  3. 08 Jan, 2013 1 commit
  4. 18 Dec, 2012 1 commit
  5. 17 Dec, 2012 1 commit
  6. 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
  7. 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
  8. 30 Nov, 2012 1 commit
  9. 28 Nov, 2012 1 commit
  10. 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
  11. 02 Nov, 2012 1 commit
  12. 01 Nov, 2012 2 commits
  13. 31 Oct, 2012 2 commits
  14. 30 Oct, 2012 1 commit
  15. 14 Oct, 2012 1 commit
  16. 11 Oct, 2012 1 commit
  17. 12 Sep, 2012 1 commit
  18. 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
  19. 29 Aug, 2012 1 commit
  20. 15 Aug, 2012 1 commit
    • Paul Wilkins's avatar
      Code clean up. · 77dc5c65
      Paul Wilkins authored
      Further cases of inconsistent naming convention.
      
      Change-Id: Id3411ecec6f01a4c889268a00f0c9fd5a92ea143
      77dc5c65
  21. 13 Aug, 2012 1 commit
  22. 03 Aug, 2012 1 commit
    • 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
  23. 17 Jul, 2012 1 commit
  24. 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
  25. 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
  26. 30 Apr, 2012 1 commit
    • Deb Mukherjee's avatar
      Minor cleanup in tokenize.h · fc1a7bd8
      Deb Mukherjee authored
      Removes a set of spurious declarations that were inadvertently checked
      in.
      
      Change-Id: I2f80b6b66d2ec9ea667c810eaf1a6e7d52478c67
      fc1a7bd8
  27. 17 Apr, 2012 1 commit
    • Attila Nagy's avatar
      Makes all global data in tokenize.c const · b35a0db0
      Attila Nagy authored
      Removes all runtime initialization of global data in tokenize.c.
      DCT token and cost tabels are pre-generated.
      
      Second patch in a series to make sure code is reentrant.
      
      Change-Id: Iab48b5fe290129823947b669413101f22a1bcac0
      b35a0db0
  28. 21 Mar, 2012 1 commit
  29. 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
  30. 05 Mar, 2012 1 commit
    • Yaowu Xu's avatar
      Changed how UV r/d estimates are done for Intra Modes · 6898e8b7
      Yaowu Xu authored
      The commit changed to compute UV intra RD estimates for 4x4 and 8x8
      separately to be used in mode decision for MB modes associated with
      the appropriate transform size respectively. Now finally after many
      other changes related 8x8 quantizer zbin boost and zbin_mode_boost,
      this change overall helps the HD(with 8x8) by around ~.13%.
      (avg .13%  glb .13% ssim .17%)
      
      The commit also has a few changes for eliminating compiler warnings.
      
      Change-Id: Ibab35dad44820c87e6b44799c66f8d519cc37344
      6898e8b7
  31. 01 Mar, 2012 1 commit
  32. 21 Jul, 2011 1 commit
    • Yaowu Xu's avatar
      fix more merge issues · 8c31484e
      Yaowu Xu authored
      With this fix, the experimental branch now builds and encodes correctly
      with the following two configure options respectively:
      --enable-experimental --enable-t8x8
      --enable-experimental
      
      Change-Id: I3147c33c503fe713a85fd371e4f1a974805778bf
      8c31484e
  33. 20 Jul, 2011 1 commit
  34. 28 Jun, 2011 1 commit
    • John Koleszar's avatar
      Use MAX_ENTROPY_TOKENS and ENTROPY_NODES more consistently · b32da7c3
      John Koleszar authored
      There were many instances in the code of vp8_coef_tokens and
      vp8_coef_tokens-1, which was a preprocessor macro despite the naming
      convention. Replace these with MAX_ENTROPY_TOKENS and ENTROPY_NODES,
      respectively.
      
      Change-Id: I72c4f6c7634c94e1fa066cd511471e5592c748da
      b32da7c3
  35. 10 Feb, 2011 1 commit
    • John Koleszar's avatar
      Fix relative include paths · 02321de0
      John Koleszar authored
      Allow compiling without adding vp8/{common,encoder,decoder} to the
      include paths.
      
      Change-Id: Ifeb5dac351cdfadcd659736f5158b315a0030b6c
      02321de0
  36. 14 Dec, 2010 1 commit
    • Johann's avatar
      shrink TOKENEXTRA and vp8_extra_bit_struct · 825adc46
      Johann authored
      Per John's previous change, shrink TOKENEXTRA from 20 to 8 bytes
      original: b7b1e6fb
      reverted: 41f4458a
      
      Also drop unused field from vp8_extra_bit_struct
      
      Update ARM ASM to deal with this change. In particular, Extra is signed
      and needs to be sign-extended when loaded.
      
      Change-Id: Ibd0ddc058432bc7bb09222d6ce4ef77e93a30b41
      825adc46