1. 05 Aug, 2013 1 commit
    • James Zern's avatar
      vp9/decoder: add thread worker · 183b77d5
      James Zern authored
      vp9/decoder/vp9_thread.[hc]
      Original source:
       http://git.chromium.org/webm/libwebp.git
       100644 blob b1615d0fb8d311666b2fa4561076c62d72c2e3ff  src/utils/thread.c
       100644 blob 13a61a4c84194c3374080cbf03d881d3cd6af40d  src/utils/thread.h
      
      Local modifications:
       - s/WebP/VP9/g
       - camelcase functions -> lower with _'s
      
      Change-Id: Ib6932640ee34f8b4782c6fbd15864a59d5d4c5fe
      183b77d5
  2. 13 Jul, 2013 1 commit
  3. 09 Jul, 2013 1 commit
    • Yaowu Xu's avatar
      Added a lossless test · 9ce6de19
      Yaowu Xu authored
      It does encodings with min and max q set at 0, and check to make sure
      output PSNR at MAX_PSNR (100).
      
      Change-Id: Ia2418353cccf6e487204ea4ff874a7e71e55cb3e
      9ce6de19
  4. 08 Jul, 2013 1 commit
    • John Koleszar's avatar
      Fix loopfilter bug · 527fc5ca
      John Koleszar authored
      In the rare case were 4x4 interior filtering was called for but no
      8x8 or larger filtering takes place, the previous code was skipping
      the filtering. This patch fixes the issue by including the interior
      mask in the overall mask for the filter application loops.
      
      Change-Id: I4a0b65056c64f97478827c2ff41e0914fc7779d0
      527fc5ca
  5. 02 Jul, 2013 1 commit
    • Jim Bankoski's avatar
      new unit test for cpu-speed · b0520b61
      Jim Bankoski authored
      Tests q0 ( lossless),  very high bitrate and low bitrates at cpu speed
      0, 1 and 2.
      
      Change-Id: I0c5cdca00acd8d01e7b13f124b3b08d4b1ae9f6d
      b0520b61
  6. 24 Jun, 2013 1 commit
    • John Koleszar's avatar
      Fix loopfilter of leftmost 4x4 edges in SB · 858475a0
      John Koleszar authored
      For cases where there's no transform set in bit 0 (the left edge of
      the SB) but bit 0 of mask_4x4_int is set (the edge 4 pixels from the
      left edge needs filtering), it was incorrectly being skipped before.
      This situation only happens on the leftmost edge of the image, as
      the edge at column 0 is intentionally skipped since there aren't
      pixels to the left to read.
      
      Change-Id: Ib2fbbcb40166e90af31b1a0e13b85b68c226cbd3
      858475a0
  7. 21 Jun, 2013 1 commit
  8. 19 Jun, 2013 1 commit
    • John Koleszar's avatar
      Add some unaligned test vectors · 639db571
      John Koleszar authored
      Tests resolutions of 8, 10, 16, 18, 32, 34, 64, 66 to exercise the
      border conditions, as well as non-SB aligned sizes.
      
      Change-Id: Ie7c2b7860ac3727e23202042f2e86792652912f8
      639db571
  9. 18 Jun, 2013 1 commit
  10. 13 Jun, 2013 1 commit
    • John Koleszar's avatar
      Add vp9 test vectors unit test · 119c9812
      John Koleszar authored
      These files can stand in until we get proper syntax vectors. They
      should provide some additional assurance against inadvertant
      bitstream changes.
      
      Change-Id: I12f6c9a5f054e30df40a7ff1f33145abf7e1d59d
      119c9812
  11. 06 Jun, 2013 1 commit
  12. 16 Mar, 2013 1 commit
  13. 13 Mar, 2013 1 commit
    • Yaowu Xu's avatar
      removed reference to "LLM" and "x8" · 00555263
      Yaowu Xu authored
      The commit changed the name of files and function to remove obselete
      reference to LLM and x8.
      
      Change-Id: I973b20fc1a55149ed68b5408b3874768e6f88516
      00555263
  14. 05 Mar, 2013 1 commit
    • John Koleszar's avatar
      Add 'superframe' index · 522d4bf8
      John Koleszar authored
      A 'superframe' is a group of frames that share the same PTS, but have a
      defined decoding order. This commit adds the ability to append an index
      to such a group of frames, allowing for random access to the constituent
      frames. This could be useful for frame-level parallelism or partial
      decoding in a multilayer scenario.
      
      Decoding the stream serially without such an index should work as a
      fallback, and VP9/TestSuperframeIndexIsOptional verifies that.
      
      Change-Id: Idff83b7560e1a7077d8fb067bfbc45b567e78b1c
      522d4bf8
  15. 02 Mar, 2013 1 commit
  16. 26 Feb, 2013 1 commit
    • Yaowu Xu's avatar
      Enable 32x32 dct tests · 3dbc78b1
      Yaowu Xu authored
      Also
      1. Removed the test code for fDCT from the iDCT test.
      2. changed the criteria of round trip error to be below 1/block, this
      is quite strict comparing to smaller transforms when size differences
      are accounted for.
      
      Change-Id: Idb46a6380b04c93fc8e2845c75f5a850366b0090
      3dbc78b1
  17. 25 Feb, 2013 1 commit
    • Yaowu Xu's avatar
      optimize forward 16x16 DCT for accuracy · 499fe05d
      Yaowu Xu authored
      This commit added pre/post scaling for first half of fDCT16x16 to
      reduce error, by simulation of 100,000 blocks for random inputs,
      the average sse reduced from 2.1/block to 0.0498/block.
      
      also enabled tests for 16x16 fDCT and iDCT
      
      Change-Id: Id2a95f0464c6dd4118797d456237ae90274c0f02
      499fe05d
  18. 23 Feb, 2013 2 commits
    • Yaowu Xu's avatar
      optimize 8x8 fdct rounding for accuracy · 22012ee9
      Yaowu Xu authored
      The commit added a final rounding choice for 8x8 forward dct to get
      rid of a sign bias at DC position and improve the accuracry in term
      of round trip error for 8x8 fDCT/iDCT.
      
      This commit also enabled forward 8x8 dct test.
      
      Change-Id: Ib67f99b0a24d513e230c7812bc04569d472fdc50
      22012ee9
    • James Zern's avatar
      add vp8 variance test · 1711cf2d
      James Zern authored
      Change-Id: I4e94ee2c4e2360d6a11a454c323f2899c1bb6f72
      1711cf2d
  19. 22 Feb, 2013 1 commit
    • Yaowu Xu's avatar
      changes related fdct/idct tests · 4e2697f5
      Yaowu Xu authored
      1. changed 4x4 test name to Vp9Fdct4x4Test to be consistent
      2. remove forward 8x8 dct test code from idct8x8_test.cc
      3. temporarily disable other forward dct tests to allow fdct work in
      progress
      
      Change-Id: I566aeed9c7c34da5a206190aa7d0e847a4008b36
      4e2697f5
  20. 05 Feb, 2013 2 commits
    • Ronald S. Bultje's avatar
      [WIP] Add column-based tiling. · 1407bdc2
      Ronald S. Bultje authored
      This patch adds column-based tiling. The idea is to make each tile
      independently decodable (after reading the common frame header) and
      also independendly encodable (minus within-frame cost adjustments in
      the RD loop) to speed-up hardware & software en/decoders if they used
      multi-threading. Column-based tiling has the added advantage (over
      other tiling methods) that it minimizes realtime use-case latency,
      since all threads can start encoding data as soon as the first SB-row
      worth of data is available to the encoder.
      
      There is some test code that does random tile ordering in the decoder,
      to confirm that each tile is indeed independently decodable from other
      tiles in the same frame. At tile edges, all contexts assume default
      values (i.e. 0, 0 motion vector, no coefficients, DC intra4x4 mode),
      and motion vector search and ordering do not cross tiles in the same
      frame.
      t log
      
      Tile independence is not maintained between frames ATM, i.e. tile 0 of
      frame 1 is free to use motion vectors that point into any tile of frame
      0. We support 1 (i.e. no tiling), 2 or 4 column-tiles.
      
      The loopfilter crosses tile boundaries. I discussed this briefly with Aki
      and he says that's OK. An in-loop loopfilter would need to do some sync
      between tile threads, but that shouldn't be a big issue.
      
      Resuls: with tiling disabled, we go up slightly because of improved edge
      use in the intra4x4 prediction. With 2 tiles, we lose about ~1% on derf,
      ~0.35% on HD and ~0.55% on STD/HD. With 4 tiles, we lose another ~1.5%
      on derf ~0.77% on HD and ~0.85% on STD/HD. Most of this loss is
      concentrated in the low-bitrate end of clips, and most of it is because
      of the loss of edges at tile boundaries and the resulting loss of intra
      predictors.
      
      TODO:
      - more tiles (perhaps allow row-based tiling also, and max. 8 tiles)?
      - maybe optionally (for EC purposes), motion vectors themselves
        should not cross tile edges, or we should emulate such borders as
        if they were off-frame, to limit error propagation to within one
        tile only. This doesn't have to be the default behaviour but could
        be an optional bitstream flag.
      
      Change-Id: I5951c3a0742a767b20bc9fb5af685d9892c2c96f
      1407bdc2
    • John Koleszar's avatar
      Add 8-tap generic convolver · 5ca6a366
      John Koleszar authored
      This commit introduces a new convolution function which will be used to
      replace the existing subpixel interpolation functions. It is much the
      same as the existing functions, but allows for changing the filter
      kernel on a per-pixel basis, and doesn't bake in knowledge of the
      filter to be applied or the size of the resulting block into the
      function name.
      
      Replacing the existing subpel filters will come in a later commit.
      
      Change-Id: Ic9a5615f2f456cb77f96741856fc650d6d78bb91
      5ca6a366
  21. 04 Feb, 2013 1 commit
    • Yaowu Xu's avatar
      enable 16x16 iDCT unit test · ebd58089
      Yaowu Xu authored
      test for forward transform will be enabled later after re-do forward
      transform
      
      Change-Id: Ie7c7cf88baf7ecbebbe52fe027e1c3b33d3b9d49
      ebd58089
  22. 24 Jan, 2013 1 commit
    • Deb Mukherjee's avatar
      Adds an error-resilient mode with test · 01cafaab
      Deb Mukherjee authored
      Adds an error-resilient mode where frames can be continued
      to be decoded even when there are errors (due to network losses)
      on a prior frame. Specifically, backward updates are turned off
      and probabilities of various symbols are reset to defaults at
      the beginning of each frame. Further, the last frame's mvs are
      not used for the mv reference list, and the sorting of the
      initial list based on search on previous frames is turned off
      as well.
      
      Also adds a test where an arbitrary set of frames are skipped
      from decoding to simulate errors. The test verifies (1) that if
      the error frames are droppable - i.e. frame buffer updates have
      been turned off - there are no mismatch errors for the remaining
      frames after the error frames; and (2) if the error-frames are non
      droppable, there are not only no decoding errors but the mismatch
      PSNR between the decoder's version of the post-error frames and the
      encoder's version is at least 20 dB.
      
      Change-Id: Ie6e2bcd436b1e8643270356d3a930e8989ff52a5
      01cafaab
  23. 23 Jan, 2013 1 commit
    • John Koleszar's avatar
      Support multiple codecs in test infrastructure · 706cafe3
      John Koleszar authored
      This commit starts to convert the tests to a system where the codec
      to be used is provided by a factory object. Currently no tests are
      instantiated for VP9 since they all fail for various reasons, but it
      was verified that they're called and the correct codec is
      instantiated.
      
      Change-Id: Ia7506df2ca3a7651218ba3ca560634f08c9fbdeb
      706cafe3
  24. 10 Jan, 2013 1 commit
  25. 26 Dec, 2012 1 commit
  26. 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
  27. 28 Nov, 2012 2 commits
  28. 15 Nov, 2012 1 commit
    • John Koleszar's avatar
      make: flatten object file directories · b72373de
      John Koleszar authored
      Rather than building an object file directory heirarchy matching the
      source tree's layout, rename the object files so that the object
      file name contains the path in the source file tree. The intent here
      is to allow two files in different parts of the source tree to have
      the same name and still not collide when put into an ar archive.
      
      Change-Id: Id627737dc95ffc65b738501215f34a995148c5a2
      b72373de
  29. 07 Nov, 2012 1 commit
    • James Zern's avatar
      Fix variance (signed integer) overflow · 98473443
      James Zern authored
      In the variance calculations the difference is summed and later squared.
      When the sum exceeds sqrt(2^31) the value is treated as a negative when
      it is shifted which gives incorrect results.
      
      To fix this we force the multiplication to be unsigned.
      
      The alternative fix is to shift sum down by 4 before multiplying.
      However that will reduce precision.
      
      For 16x16 blocks the maximum sum is 65280 and sqrt(2^31) is 46340 (and
      change).
      
      This change is based on:
      16982342 Missed some variance casts
      fea3556e Fix variance overflow
      
      Change-Id: I2c61856cca9db54b9b81de83b4505ea81a050a0f
      98473443
  30. 30 Oct, 2012 1 commit
  31. 22 Oct, 2012 1 commit
  32. 11 Oct, 2012 1 commit
  33. 04 Oct, 2012 1 commit
  34. 03 Oct, 2012 1 commit
    • Adrian Grange's avatar
      Unit Test for Error Resilience Mode · cc017ca8
      Adrian Grange authored
      This unit test compares the difference in quality with
      error resilience enabled and disabled. The test runs
      for all of the one-pass encoding modes.
      
      The test ensures that the effect of turning on error
      resilience makes less than a 10% difference in PSNR.
      
      Further cases should be added to do a more comprehensive
      test.
      
      Change-Id: I1fc747fc78c9459bc6c74494f4b38308dbed0c32
      cc017ca8
  35. 26 Sep, 2012 1 commit
  36. 31 Aug, 2012 1 commit
  37. 08 Aug, 2012 1 commit