1. 29 Jun, 2014 1 commit
  2. 26 Jun, 2014 2 commits
    • Jingning Han's avatar
      Adaptive txfm size selection depending on residual sse/variance · 5a3e3c6d
      Jingning Han authored
      This commit enables an adaptive transform size selection method
      for speed -6. It uses largest transform size when the sse is more
      than 4 times of variance, i.e., most energy is compacted in the
      DC coefficient. Otherwise, use the default TX_8X8. It improves
      the compression efficiency for rtc set of speed -6 by 0.8%, no
      speed change observed.
      Change-Id: Ie6ed1e728ff7bf88ebe940a60811361cdd19969c
    • Pengchong Jin's avatar
      Skip the partition search for the frame with no motion · 12861260
      Pengchong Jin authored
      This patch allows the encoder to skip the partition search for the
      frame if it is an inter frame and only zero motion vectors have
      been detected in the first pass. The partition size is directly
      assigned according to the difference variance.
      Borg tests show overall little performance changes in term of PSNR
      (derf -0.027%, yt 0.152%, hd 0.078%, stdhd 0%). The worst case of
      PSNR loss is -0.514% from yt. The best PSNR gain is 4.293% from yt.
      The second pass encoding speedup for slideshow clips is 15%-40%.
      Change-Id: I881f347d286553ee5594a9ea09ba1a61ac684045
  3. 24 Jun, 2014 2 commits
    • Yunqing Wang's avatar
      Reuse inter prediction result in real-time speed 6 · 0aae1000
      Yunqing Wang authored
      In real-time speed 6, no partition search is done. The inter
      prediction results got from picking mode can be reused in the
      following encoding process. A speed feature reuse_inter_pred_sby
      is added to only enable the resue in speed 6.
      This patch doesn't change encoding result. RTC set tests showed
      that the encoding speed gain is 2% - 5%.
      Change-Id: I3884780f64ef95dd8be10562926542528713b92c
    • Paul Wilkins's avatar
      Fix some bugs in multi-arf · 8160a26f
      Paul Wilkins authored
      Fix some bugs relating to the use of buffers
      in the overlay frames.
      Fix bug where a mid sequence overlay was
      propagating large partition and transform sizes into
      the subsequent frame because of :-
        sf->last_partitioning_redo_frequency  > 1 and
        sf->tx_size_search_method == USE_LARGESTALL
      Change-Id: Ibf9ef39a5a5150f8cbdd2c9275abb0316c67873a
  4. 20 Jun, 2014 3 commits
  5. 12 Jun, 2014 3 commits
    • Dmitry Kovalev's avatar
      Replacing txfm_size with tx_size. · 4345d12d
      Dmitry Kovalev authored
      Change-Id: Ifa6374e9db5919322733b656e0865f5f19ee6f2c
    • Jingning Han's avatar
      Fast computation path for forward transform and quantization · ccba289f
      Jingning Han authored
      This commit enables a fast path computational flow for forward
      transformation. It checks the sse and variance of prediction
      residuals and decides if the quantized coefficients are all
      zero, dc only, or more. It then selects the corresponding coding
      path in the forward transformation and quantization stage.
      It is currently enabled in rtc coding mode. Will do it for rd
      coding mode next.
      In speed -6, the runtime for pedestrian_area 1080p at 1000 kbps
      goes down from 14234 ms to 13704 ms, i.e., about 4% speed-up.
      Overall coding performance for rtc set is changed by -0.18%.
      Change-Id: I0452da1786d59bc8bcbe0a35fdae9f623d1d44e1
    • Alex Converse's avatar
      Fix SEG_LVL_SKIP in non-RD inter mode selection. · 6c3f311b
      Alex Converse authored
      Add a set_mode_info_seg_skip function that fills the requisite mode info.
      Change-Id: I460b1b6845d720d9b09ed5b64df0ea0aac443f62
  6. 09 Jun, 2014 1 commit
    • Yunqing Wang's avatar
      Use small transform size in non-rd real-time mode · b04d7668
      Yunqing Wang authored
      In non-rd real-time mode, choosing smaller transform size in
      encoding gives better video quality and good speed gain than
      choosing larger transform size. This patch set tx size search
      method to ALLOW_8X8, which is better than using 4x4 or other
      larger sizes.
      Borg tests on rtc set at speed 6 showed significant gain on quality.
      PSNR gain: 11.034% and SSIM gain: 15.466%.
      The speed gain is 5% - 12% for <720p clips, and 2% - 7% for
      720p clips.
      Change-Id: If4dc74ed2df359346b059f47fb73b4a0193ec548
  7. 06 Jun, 2014 2 commits
  8. 05 Jun, 2014 2 commits
  9. 03 Jun, 2014 1 commit
  10. 02 Jun, 2014 1 commit
  11. 01 Jun, 2014 1 commit
  12. 29 May, 2014 2 commits
  13. 27 May, 2014 1 commit
  14. 23 May, 2014 1 commit
  15. 22 May, 2014 1 commit
    • Alex Converse's avatar
      Use offset mode info when filling pc tree. · 80e5326c
      Alex Converse authored
      Use the appropriate subblock offset mode info rather than the parent
      block base, when filling mbmi in the pc tree in nonrd_use_partition.
      This mimics what is done in the vertical case and what is done for
      both cases in nonrd_pick_partition.
      This change has little practical effect at the moment since in speed 5
      rt horizontal and vertical partitions are currently only used unpaired
      at edges of the picture.
      Change-Id: I4632f66ca84086dac56c7d36b45ddbe38a06f42a
  16. 21 May, 2014 2 commits
    • Yaowu Xu's avatar
      Enable various thresholds of motion detection · 3bda7ec1
      Yaowu Xu authored
      This commit changed to enable the encoder to adjust motion dection
      speed threshold based on picture size. In addition, cpu-used 1 now
      does a partition search every other frame instead of every third
      frame for low resolution inputs.
      The change has no quality/speed impact for 720p and above. Test
      showed the change increase encoding time by between 3% to 6% for
      cpu-used 2 encodiong of 360p sequences. It also has a compression
      gain about .3%.
      For cpu-used 2, the change resolved some very disturbing visual
      artifacts in certain sequences when large block partitionings and
      transforms are used as a result of copying the partition from a
      previous frame.
      Change-Id: Ic7fd22508cdb811d4ca935655adbf20109286cfa
    • Dmitry Kovalev's avatar
      Moving itxm_add pointer from MACROBLOCKD to MACROBLOCK. · 35a83677
      Dmitry Kovalev authored
      The final goal is eventually to get rid of both itxm_add and fwd_txm4x4.
      This patch does it in the decoder.
      Change-Id: Ibb3db57efbcbb1ac387c6742538a9fcf2c6f24a5
  17. 19 May, 2014 1 commit
  18. 16 May, 2014 2 commits
  19. 15 May, 2014 2 commits
  20. 14 May, 2014 1 commit
    • Deb Mukherjee's avatar
      Remove Wextra warnings from vp9_sad.c · 7ab9a958
      Deb Mukherjee authored
      As a side-effect, the max_sad check is removed from the
      C-implementation of VP8, for consistency with VP9, and to
      ensure that the SAD tests common to VP8/VP9 pass.
      That will make the VP8 C implementation of sad a little slower
      but given that is rarely used in practice, the impact will be
      Change-Id: I7f43089fdea047fbf1862e40c21e4715c30f07ca
  21. 12 May, 2014 1 commit
    • Yaowu Xu's avatar
      Cleanup unused parameters · d22faee9
      Yaowu Xu authored
      Remove unused function parameters from:
      Change-Id: I07725e5099cf98486e70c9c70babb0cd785c58a9
  22. 10 May, 2014 1 commit
    • Jingning Han's avatar
      Apply constrained partition search range to non-RD mode decision · 734c5ffa
      Jingning Han authored
      This commit enables a chessboard pattern for partition search. All
      the black blocks run regular partition search ranging from 8x8 to
      32x32. The rest white blocks take the nearby blocks' information
      to adaptively decide the effective search range.
      The compression performance for rtc set at speed -5 is down by 1.5%.
      For pedestrian 1080p at speed -5, the runtime goes from 41594 ms to
      39697 ms, i.e., about 5% faster.
      Change-Id: Ia4b96e237abfaada487c743bca08fe1afd298685
  23. 06 May, 2014 1 commit
  24. 01 May, 2014 1 commit
  25. 29 Apr, 2014 1 commit
  26. 23 Apr, 2014 1 commit
  27. 21 Apr, 2014 1 commit
    • Jingning Han's avatar
      Enable background detection for adaptive quantizer control · 80a4f559
      Jingning Han authored
      This commit enables a background detection approach for adaptive
      quantizer control. It combines the cyclic refresh pattern and the
      background information to determine the segment id for adaptive
      quantizer selection, prior to the non-RD mode decision process.
      It hence allows proper quantization information update for a more
      precise rate-distortion modeling in the non-RD mode decision.
      The compression performance of speed -5 for rtc set is improved
      by 2.5%, at no speed change.
      Change-Id: Ic3713e8ed9185b403b5b1679d19dabd57506d452
  28. 17 Apr, 2014 1 commit