1. 14 Mar, 2013 1 commit
    • John Koleszar's avatar
      Add VP9_GET_REFERENCE control · b3c350a1
      John Koleszar authored
      This is like VP8_COPY_REFERENCE, but returns a pointer to the reference
      frame rather than a copy of it. This is useful when the application
      doesn't know what the size of the reference is, as is the case when
      scaling is in effect.
      
      Change-Id: I63667109f65510364d0e397ebe56217140772085
      b3c350a1
  2. 13 Mar, 2013 1 commit
    • John Koleszar's avatar
      fix superframe index marker masks · bd9cd9a1
      John Koleszar authored
      The superframe index marker byte carries data in the lower 5 bits. Only the
      upper 3 should be used as part of the mask to detect it. By masking with
      0xf0, the previous code was incorrect for frames over 65k bytes.
      
      Change-Id: I6248889f5af227457f359a56b2348ef6db87a3b4
      bd9cd9a1
  3. 12 Mar, 2013 12 commits
  4. 11 Mar, 2013 10 commits
  5. 10 Mar, 2013 1 commit
    • John Koleszar's avatar
      Optimize vp9_tree_probs_from_distribution · bd84685f
      John Koleszar authored
      The previous implementation visited each node in the tree multiple times
      because it used each symbol's encoding to revisit the branches taken and
      increment its count. Instead, we can traverse the tree depth first and
      calculate the probabilities and branch counts as we walk back up. The
      complexity goes from somewhere between O(nlogn) and O(n^2) (depending on
      how balanced the tree is) to O(n).
      
      Only tested one clip (256kbps, CIF), saw 13% decoding perf improvement.
      
      Note that this optimization should port trivially to VP8 as well. In VP8,
      the decoder doesn't use this function, but it does routinely show up
      on the profile for realtime encoding.
      
      Change-Id: I4f2848e4f41dc9a7694f73f3e75034bce08d1b12
      bd84685f
  6. 09 Mar, 2013 2 commits
  7. 08 Mar, 2013 6 commits
  8. 07 Mar, 2013 7 commits