1. 09 Feb, 2016 2 commits
    • Debargha Mukherjee's avatar
      A variety of fixes for supertx/var-tx rd costing · e2c1ea94
      Debargha Mukherjee authored
      Change-Id: I8a3d59378abb1dfa4e614b2975c2db05d4224bd5
    • Debargha Mukherjee's avatar
      Explicitly set tx_type for sub8x8 blocks · d46c1f23
      Debargha Mukherjee authored
      Fixes an issue where the tx_type was not set correctly for
      sub8x8 inter and intra blocks. In the current syntax, for
      sub8x8 blocks, there is still a single tx_type that is
      transmitted. Ideally, this should be searched for the best
      rd performance, albeit at the expense of encode speed.
      For now, we just set it to DCT_DCT. Previously it was left
      incorrectly as what was used for the previous non sub8x8
      derflr: BDRATE -0.277%
      Change-Id: If76ba903bfbfd4d374cf1ac7d1daee50e92f0edd
  2. 08 Feb, 2016 4 commits
  3. 05 Feb, 2016 1 commit
  4. 04 Feb, 2016 2 commits
  5. 03 Feb, 2016 6 commits
    • hui su's avatar
      Add a speed feature for intra filter search · 5b618b7c
      hui su authored
      Seperate the prediction angle search and fitler search.
      It can reduce the computation overhead of filter search by as much
      as 85%, while keeping more than 50% of the coding gain.
      Change-Id: Id152f71e20ebcaca8b429bdd4ca1fbeb646fc6bf
    • hui su's avatar
      Add 8-tap interpolation filter options for intra prediction · 3b1c7668
      hui su authored
      BD-rate performance improvement (on top of ext-intra):
      derflr  0.22%
      hevclr  0.36%
      hevcmr  0.48%
      hevchr  0.37%
      stdhd   0.19%
      Average speed impact on some derf clips is about 40% slower (on
      top of ext-intra). Speed improvment is a to-do.
      Change-Id: I8fe3fe8c5e4f60d0462778adbcc15c84dfbe7a25
    • Jingning Han's avatar
      Generalize the dynamic reference motion vector coding mode · 4fb8b217
      Jingning Han authored
      This commit generalizes dynamic reference motion vector coding mode
      to support multiple candidate modes in the rate-distortion
      optimization scheme and to support the selection in the bit-stream
      syntax. The maximum number of modes allowed is currently limited to
      4. The syntax elements for the dynamic reference motion vector
      modes are using binary codes. The scheme supports single reference
      It improves the compression performance
      derf   0.135%
      hevcmr 0.098%
      Change-Id: Id053d6ce76e8365e52727bd0d12d28ce3de2e0e8
    • Jingning Han's avatar
      Account for zero-forcing operation in selective ref mv mode · 590265ea
      Jingning Han authored
      It makes the encoder accounts for the block zero-forcing operation
      when optimizing the mode decisions.
      Change-Id: I2c8e243756080b446b8a53a9679f75c4c47148cf
    • Geza Lore's avatar
      Fix for supertx: ignore skip_txfm optimization · 17a3d31d
      Geza Lore authored
      Change-Id: I80eedb548c449ec43c6b5b88c5493b665606906e
    • Julia Robson's avatar
      Supertx fix for 422 colour subsampling · 4fbd678f
      Julia Robson authored
      Fixes assertion for football_422_4sif.y4m when supertx, var_tx and
      ext_tx are all enabled. Problem was after subsampling, the u and v
      blocks being encoded were no longer square.
      Change-Id: Ie626f30a2e64538d33343a26d5124a79a6f2b985
  6. 02 Feb, 2016 3 commits
    • Jingning Han's avatar
      Enable adaptive motion vector referencing mode · 67cf8908
      Jingning Han authored
      This commit allows an adaptive motion vector referencing mode
      approach. It checks the available reference motion vector candidate
      list and decides the amount of motion vector referencing modes. The
      current implementation assumes simple binary coding for the syntax.
      The compression performance is improved by
      derf   0.11%
      hevcmr 0.38%
      stdhd  0.09%
      hevchr 0.23%
      The coding gains due to the new reference motion vector system are
      derf   1.0%
      hevcmr 1.7%
      stdhd  1.4%
      hevchr 1.3%
      Change-Id: Idf932fc373546fe59c8741f1b933ff656e8dbc3f
    • James Zern's avatar
      vp10: remove unused (read|write)_uniform · ebf25868
      James Zern authored
      dead code since:
      5d3327e8 Remove palette from VP10
      Change-Id: I4a36575706ea6fffefe5bc778595112ef6ff37d8
    • Angie Chiang's avatar
      Pass filter type instead of filter array · 10ad97bc
      Angie Chiang authored
      Change-Id: I25f2149ddaa332722f7ab82e8f832a253c4b6ab3
  7. 29 Jan, 2016 4 commits
  8. 28 Jan, 2016 2 commits
  9. 27 Jan, 2016 1 commit
    • Debargha Mukherjee's avatar
      Fixes ext-interp experiment · eef57c1e
      Debargha Mukherjee authored
      Fixes integer pel MV usage for the sub8x8 case, which fixes a
      rare mismatch issue.
      Also adds some other minor missing code related to filter threshes.
      Change-Id: I6b07e6cf9b287ba4b5bd6599af4a7412e50b3bdc
  10. 26 Jan, 2016 6 commits
    • Geza Lore's avatar
      Reintroduce VAR_TX fix · 5aa655f7
      Geza Lore authored
      Reintroduce part of
      Which was later reverted in
      Change-Id: If3e5610ba3985ae7b4d952d8e616982465ac667a
    • Geza Lore's avatar
      Always recode SUPERTX blocks. · f33755ef
      Geza Lore authored
      There is still an assertion failure when tokenizing transform
      coefficients for a supertx block, due to the eob not being set
      consistently with the coefficients, so we always recode supertx blocks
      for now. Also added further PICK_MODE_CONTEXT instances to avoid
      potential clash between horizontal/vertical/split partition SUPERTX
      Change-Id: I5f3da1fa0d8d20fc21face170487e1a285fd1cc6
    • Geza Lore's avatar
      Update VAR_TX related context when using SUPERTX. · 22cfc841
      Geza Lore authored
      The encoder did not update left_txfm_context and above_txfm_context in
      MACROBLOCKD (used for choosing the probability context for the vartx
      split bits) when the supertx bit was set for a block. The deoder on the
      other hand did update these for supertx blocks. The encoder used these
      to compute the context counts, which the packer then uses to adapt it's
      probabilities. This results in the packer and the decoder using
      different probabilities.
      This patch harmonizes the encoder and the decoder by making the encoder
      update the mentioned context for supertx coded blocks.
      Change-Id: I3a22132124b1bce2ee501d640ceab374b19e3ca1
    • Geza Lore's avatar
      Initalize mbmi->tx_size during rdopt. · 56686b45
      Geza Lore authored
      This is necessary when using SUPERTX, as the bitstream packer relies on
      tx_size being set correctly to decide whether to output the block using
      supertx or not.
      Change-Id: I79e776b3b810f4a15b9dbc6afdd6fc90c73c8934
    • Geza Lore's avatar
      Set inter_tx_size for supertx coded blocks. · e7c0e157
      Geza Lore authored
      The loop filter relies on inter_tx_size in MB_MODE_INFO being set
      properly when VAR_TX is enabled. Supertx coded blocks did not set this
      previously at all, and the differing garbage values eventually resulted
      in in a YUV mismatch between encoder and decoder after loop filtering.
      This patch fixes this by setting inter_tx_size to the proper supertx
      size in both the encoder and the decoder. This should also mean that
      loop filtering is done at the proper transform boundaries, even when
      supertx or vartx is being used.
      Change-Id: I41a564cd6d34ce4a8313ad4efa89d905f5ead731
    • Debargha Mukherjee's avatar
      A minor assert fix for supertx · a8122bb9
      Debargha Mukherjee authored
      Change-Id: I532fff64ccaa1f38240ba7ca5ce2f7e1eb531771
  11. 25 Jan, 2016 2 commits
  12. 22 Jan, 2016 4 commits
    • Yue Chen's avatar
      Adding new compound modes to EXT_INTER experiment · 968bbc7b
      Yue Chen authored
      Combinations of different mv modes for two reference frames
      are allowed in compound inter modes. 9 options are enabled,
      and NEW_NEWMV.
      This experiment is mostly deported from the nextgen branch.
      It is made compatible with other experiments
      Coding gain of EXT_INTER(derflr/hevcmr/hevchd): 0.533%/0.728%/0.639%
      Change-Id: Id47e97284e6481b186870afbad33204b7a33dbb0
    • Debargha Mukherjee's avatar
      A fix for a missing tx_type · 4e406f70
      Debargha Mukherjee authored
      Change-Id: I165cd06256175edb7739020379ba3098251f4a7c
    • Julia Robson's avatar
      Fixes for var_tx when ext_tx is not enabled · 9fe188e4
      Julia Robson authored
      This patch fixes a couple of issues caused by change-id:
      Changes to the code for when the ext_tx experiment is not enabled
      were merged from master but as var_tx does not exist on master
      the changes had not been applied to the case when var_tx experiment
      is enabled
      Change-Id: Iaf2b717e6b8626b2b6a03226127221b776b49884
    • Debargha Mukherjee's avatar
      Some fixes on tx size/type selection · 8d69a6e8
      Debargha Mukherjee authored
      For ext_tx experiment.
      Change-Id: Ie37b9b456b09bde8b606fb978fee4cca8d0326b7
  13. 21 Jan, 2016 1 commit
    • Debargha Mukherjee's avatar
      Loop restoration filter · 84ca7a9f
      Debargha Mukherjee authored
      Current implementation is a bilateral filter whose
      parameters are transmitted in the bitstream.
      derflr: -0.647% BDRATE
      hevcmr: -0.794% BDRATE
      This is a prelimary patch. Various other variations are to
      be investigated next, that will hopefully be less expensive
      on the decoder side.
      Change-Id: I50634ae8f5014ad0bf7432306348908a349d81e1
  14. 20 Jan, 2016 1 commit
    • Julia Robson's avatar
      Making the forward transform consistent with high bit depth · c178b2d1
      Julia Robson authored
      This patch changes the code for 16bit buffers to use the same
      optimisation as is used for 8bit buffers. (See change-Id:
      I0452da1786d59bc8bcbe0a35fdae9f623d1d44e1 for more information
      about the optimisation)
      Change-Id: I5f327a13a7b01fc356114a2aa9d1261bf76d8d69
  15. 19 Jan, 2016 1 commit