1. 21 Feb, 2013 2 commits
  2. 20 Feb, 2013 8 commits
  3. 19 Feb, 2013 5 commits
  4. 16 Feb, 2013 4 commits
  5. 15 Feb, 2013 7 commits
  6. 14 Feb, 2013 4 commits
  7. 13 Feb, 2013 10 commits
    • Ronald S. Bultje's avatar
    • Ronald S. Bultje's avatar
      Add support for tile rows. · 89a206ef
      Ronald S. Bultje authored
      These allow sending partial bitstream packets over the network before
      encoding a complete frame is completed, thus lowering end-to-end
      latency. The tile-rows are not independent.
      
      Change-Id: I99986595cbcbff9153e2a14f49b4aa7dee4768e2
      89a206ef
    • Ronald S. Bultje's avatar
      Remove 2nd-order transform for first-order DC coefficients. · 42d6be80
      Ronald S. Bultje authored
      Since addition of the larger-scale transforms (16x16, 32x32), these
      don't give a benefit at macroblock-sizes anymore. At superblock-sizes,
      2nd-order transform was never used over the larger transforms. Future
      work should test whether there is a benefit for that use case.
      
      Change-Id: I90cadfc42befaf201de3eb0c4f7330c56e33330a
      42d6be80
    • Paul Wilkins's avatar
      Abstract selection of coef band. · 9255ad10
      Paul Wilkins authored
      This patch abstracts the selection of the coefficient band
      context into a function as a precursor to further experiments
      with the coefficient context.
      
      It also removes the large per TX size coefficient band structures
      and uses a single matrix for all block sizes within the test function.
      
      This may have an impact on quality (results to follow) but is only an
      intermediate step in the process of redefining the context. Also the
      quality impact will be larger initially because the default tables will
      be out of step with the new banding.
      
      In particular the 4x4 will in this case only use 7 bands. If needed we
      can add back block size dependency localized within the function, but
      this can follow on after the other changes to the definition of the
      context.
      
      Change-Id: Id7009c2f4f9bb1d02b861af85fd8223d4285bde5
      9255ad10
    • Paul Wilkins's avatar
      Fixed encoder decoder mismatch. · 56049d94
      Paul Wilkins authored
      Reverted part of change
      I19981d1ef0b33e4e5732739574f367fe82771a84
      
      That gives rise to an enc/dec mismatch.
      As things stand the memsets are still needed.
      
      Change-Id: I9fa076a703909aa0c4da0059ac6ae19aa530db30
      56049d94
    • Paul Wilkins's avatar
      Abstract the selection of coefficient context. · 0d284ffe
      Paul Wilkins authored
      This is an initial step to facilitate experimentation
      with changes to the prior token context used to code
      coefficients to take better account of the energy of
      preceding tokens.
      
      This patch merely abstracts the selection of context into
      two functions and does not alter the output.
      
      Change-Id: I117fff0b49c61da83aed641e36620442f86def86
      0d284ffe
    • Paul Wilkins's avatar
    • Yaowu Xu's avatar
      f01b08c9
    • Yaowu Xu's avatar
      d3de9779
    • Yaowu Xu's avatar
      enable bitstream lossless support · 17db5d00
      Yaowu Xu authored
      1. Added a bit in frame header to  to indicate if a frame is encoded
      in lossless mode, so decoder does not make the decision based on Q0
      2. Minor changes to make sure that lossy coding works same as when
      the lossless experiment is not enabled.
      3. Renamed function pointers for transforms to be consistent, using
      prefix fwd_txm and inv_txm for forward and inverse respectively
      
      To encode in lossless mode, using "--lossless=1 --min-q=0 --max-q=0"
      with vpxenc.
      
      Change-Id: Ifae53b26d2ffbe378d707e29d96817b8a5e6c068
      17db5d00