1. 24 Sep, 2013 1 commit
  2. 23 Sep, 2013 1 commit
    • Deb Mukherjee's avatar
      Improves constant qual, constrained qual turned on · d11221f4
      Deb Mukherjee authored
      Adds modeled functions to decide the qp for altref frames in constant q
      mode similar to other functions in use in bitrate mode.
      
      Also turns on the constrained quality mode (end-usage=2) option which
      was turned off before. Basic testing shows the mode works in principle,
      to cap bitrate to the target-bitrate specified, while allowing lower
      bitrate depending on the cq-level specified. The mode will need to be
      improved over time.
      
      Results for constant quality vs bitrate control mode:
      derfraw300/fullderfraw: +3.0% at constant quality over bitrate control.
      fullstdhdraw: +4.341%
      stdhdraw250: +5.361%
      
      Change-Id: If5027c9ec66c8e88d33e47062c6cb84a07b1cda9
      d11221f4
  3. 16 Sep, 2013 2 commits
    • Paul Wilkins's avatar
      Minor clean up. · cb50dc7f
      Paul Wilkins authored
      Removed some unused code and minor cleanup
      / reordering.
      
      Change-Id: I4083ae56aeb8edfe9b85aa2f42a16aa28d19da94
      cb50dc7f
    • Paul Wilkins's avatar
      Adjustment to mode_skip_start. · 3b017784
      Paul Wilkins authored
      Corrected values relating to modified mode order.
      
      Change-Id: I24fccba3af4bc16721d5e7e51888a66305bfa7fe
      3b017784
  4. 13 Sep, 2013 1 commit
    • Jingning Han's avatar
      Adaptive motion search control · c4826c59
      Jingning Han authored
      This commit enables adaptive constraint on motion search range for
      smaller partitions, given the motion vectors of collocated larger
      partition as a candidate initial search point.
      
      It makes speed 0 runtime of bus at CIF and 2000 kbps goes from
      167s down to 162s (3% speed-up), at 0.01dB performance gains. In
      the settings of speed 1, this makes the runtime goes from 33687 ms
      to 32142 ms (4.5% speed-up), at 0.03dB performance gains.
      
      Compression performance wise, it gains at speed 1:
      derf  0.118%
      yt    0.237%
      hd    0.203%
      stdhd 0.438%
      
      Change-Id: Ic8b34c67810d9504a9579bef2825d3fa54b69454
      c4826c59
  5. 11 Sep, 2013 3 commits
    • Deb Mukherjee's avatar
      Clean up of the search best filter speed feature · b9646467
      Deb Mukherjee authored
      Removes this speed feature since it is very slow and unlikely
      to be used in practice. This cleanup removes a bunch of unnecessary
      complications in the outer encode loop.
      
      Change-Id: I3c66ef1ca924fbfad7dadff297c9e7f652d308a1
      b9646467
    • Deb Mukherjee's avatar
      Changes in speed 2 settings · 69fe840e
      Deb Mukherjee authored
      Propose some changes to the speed 2 settings to improve quality.
      In particular, turns off the adjust_thresholds_by_speed feature
      which improves results by 6%. Also removes the code for
      adjust_thresholds_by_speed since it conflicts with the adaptive
      rd thresh feature.
      
      Overall, with this change speed 2 is -15.2% from speed 0 settings,
      on derf, which is significantly better than -21.6% down before.
      
      Change-Id: I6e90a563470979eb0c258ec32d6183ed7ce9a505
      69fe840e
    • Scott LaVarnway's avatar
      New mode_info_context storage -- undo revert · ac6093d1
      Scott LaVarnway authored
      mode_info_context was stored as a grid of MODE_INFO structs.
      The grid now constists of pointers to MODE_INFO structs.  The
      MODE_INFO structs are now stored as a stream (decoder only),
      eliminating unnecessary copies and is a little more cache
      friendly.
      
      Change-Id: I031d376284c6eb98a38ad5595b797f048a6cfc0d
      ac6093d1
  6. 10 Sep, 2013 3 commits
    • Deb Mukherjee's avatar
      Small tweaks on the constant quality mode · 09830aa0
      Deb Mukherjee authored
      Improves results a little.
      derf is now +1.078% over bitrate control.
      
      Change-Id: I4812136f3e67be21d14ec089419976a32a841785
      09830aa0
    • Yunqing Wang's avatar
      Modify encode breakout for static frames · 939791a1
      Yunqing Wang authored
      Thank Paul for the suggestions. While turning on static-thresh
      for static-image videos, a big jump on bitrate was seen. In this
      patch, we detected static frames in the video using first-pass
      stats. For different cases, disable encode breakout or reduce
      encode breakout threshold to limit the skipping.
      
      More modification need be done to break incorrect partition
      picking pattern for static frames while skipping happens.
      
      Change-Id: Ia25f47041af0f04e229c70a0185e12b0ffa6047f
      939791a1
    • Paul Wilkins's avatar
      Modified mode skip functionality. · 4f660cc0
      Paul Wilkins authored
      A previous speed feature skipped modes not used in earlier
      partitions but this not longer worked as intended following
      changes to the partition coding order and in conjunction
      with some other speed features (Especially speed 2 and above).
      
      This modified mode skip feature sets a mask after the first X
      modes have been tested in each partition depending on the
      reference frame of the current best case.
      
      This patch also makes some changes to the order modes are
      tested to fit better with this skip functionality.
      
      Initial testing suggests speed and rd hit count improvements
      of up to 20% at speed 1. Quality results. (derf -1.9%, std hd  +0.23%).
      
      Change-Id: Idd8efa656cbc0c28f06d09690984c1f18b1115e1
      4f660cc0
  7. 09 Sep, 2013 2 commits
    • Ivan Maltz's avatar
      API extensions and sample app for spacial scalable encoder · 01b35c3c
      Ivan Maltz authored
      Sample app: vp9_spatial_scalable_encoder
      vpx_codec_control extensions:
        VP9E_SET_SVC
        VP9E_SET_WIDTH, VP9E_SET_HEIGHT, VP9E_SET_LAYER
        VP9E_SET_MIN_Q, VP9E_SET_MAX_Q
      expanded buffer size for vp9_convolve
      
      modified setting of initial width in vp9_onyx_if.c so that layer size
      can be set prior to initial encode
      
      Default number of layers set to 3 (VPX_SS_DEFAULT_LAYERS)
      Number of layers set explicitly in vpx_codec_enc_cfg.ss_number_layers
      
      Change-Id: I2c7a6fe6d665113671337032f7ad032430ac4197
      01b35c3c
    • James Zern's avatar
      Revert "New mode_info_context storage" · 54a03e20
      James Zern authored
      This reverts commit dae17734
      
      Encode crashes, leaks and increases integer overflow errors.
      
      Change-Id: I595aa2649bb8d0b6552ff91652837a74c103fda2
      54a03e20
  8. 06 Sep, 2013 3 commits
    • Paul Wilkins's avatar
      Enable kf restrictions at speed 4 · f15cdc74
      Paul Wilkins authored
      Change-Id: I453409d3be3f5fe118b15affde45cb52184aef20
      f15cdc74
    • Deb Mukherjee's avatar
      Support a constant quality mode in VP9 · e378a89b
      Deb Mukherjee authored
      Adds a new end-usage option for constant quality encoding in vpx. This
      first version implemented for VP9, encodes all regular inter frames
      using the quality specified in the --cq-level= option, while encoding
      all key frames and golden/altref frames at a quality better than that.
      
      The current performance on derfraw300 is +0.910% up from bitrate control,
      but achieved without multiple recode loops per frame.
      
      The decision for qp for each altref/golden/key frame will be improved
      in subsequent patches based on better use of stats from the first pass.
      Further, the qp for regular inter frames may also be varied around the
      provided cq-level.
      
      Change-Id: I6c4a2a68563679d60e0616ebcb11698578615fb3
      e378a89b
    • Scott LaVarnway's avatar
      New mode_info_context storage · dae17734
      Scott LaVarnway authored
      mode_info_context was stored as a grid of MODE_INFO structs.
      The grid now constists of a pointer to a MODE_INFO struct and
      a "in the image" flag.  The MODE_INFO structs are now stored
      as a stream, eliminating unnecessary copies and is a little
      more cache friendly.
      
      For the test clips used, the decoder performance improved
      by ~4.3% (1080p) and ~9.7% (720p).
      
      Patch Set 2: Re-encoded clips with latest. Now ~1.7% (1080p)
      and 5.9% (720p).
      
      Change-Id: I846f29e88610fce2523ca697a9a9ef2a182e9256
      dae17734
  9. 04 Sep, 2013 1 commit
    • Jim Bankoski's avatar
      make vp9 postproc a config option · 79401542
      Jim Bankoski authored
      Vp9 postproc is disabled for now as its not been shown to help and
      may be merged with vp8.
      
      Change-Id: I25620d6cd34c6e10331b18c7b5ef7482e39c6057
      79401542
  10. 29 Aug, 2013 1 commit
    • Paul Wilkins's avatar
      Added per pixel inter rd hit count stats · 1f4bf79d
      Paul Wilkins authored
      Added some code to output normalized rd hit count stats.
      In effect this approximates to the average number of rd
      operations/tests per pixel for the sequence.
      
      The results are not quite accurate and I have not bothered
      to account for partial SB64s at frame edges and for key frames
      However they do give some idea of the number of modes /
      prediction methods being tested for each pixel across the
      different partition sizes. This indicates how much scope their
      is for further gains either by reducing the number of partitions
      examined or the modes per partition through heuristics.
      
      Patch 3 moved place where count incremented so partial rd
      tests that are aborted with INT_MAX return are also counted.
      
      Example numbers for first 50 frames of Akiyo.
      Speed 0 ~84.4 rd operations / pixel
      Speed 1 ~28.8
      Speed 2 ~11.9
      
      Change-Id: Ib956e787e12f7fa8b12d3a1a2f6cda19a65a6cb8
      1f4bf79d
  11. 28 Aug, 2013 1 commit
    • Deb Mukherjee's avatar
      Adds a speed feature for fast 1-loop forw updates · e02dc84c
      Deb Mukherjee authored
      Incorporates a speed feature for fast forward updates of
      coefficients. This feature takes 3 values:
      0 - use standard 2-loop version
      1 - use a 1-loop version
      2 - use a 1-loop version with reduced updates
      
      Results: derfraw300 +0.007% (on speed 0) at feature value = 1
                          -0.160% (on speed 0) at feature value = 2
      
      There is substantial speed up at speeds 2 and above for low
      resolution sequences where the entropy updates are a big part
      of the overall computations.
      
      Change-Id: Ie96fc50777088a5bd441288bca6111e43d03bcae
      e02dc84c
  12. 24 Aug, 2013 2 commits
  13. 23 Aug, 2013 3 commits
    • Yaowu Xu's avatar
      Added border extension · 656632b7
      Yaowu Xu authored
      To the source buffer to be encoded as an alt ref frame. This is to fix
      the problem of using uninitialized memory in encoder.
      
      See https://code.google.com/p/webm/issues/detail?id=605
      
      Change-Id: I97618a2fc207e08abcf5301b734aa9e3ad695e2c
      656632b7
    • Paul Wilkins's avatar
      Changes to adaptive inter rd thresholds. · aa5b67ad
      Paul Wilkins authored
      Values now carried over frame to frame.
      Change to algorithm for decreasing threshold after
      a hit and to max threshold (now based on speed)
      
      Removed some old commented out code relating to
      VP8 adaptive thresholds.
      
      The impact of these changes tested on Akiyo (50 frames)
      and measured in terms of unit rd hits is as follows:
      
      Speed 0 84.36 -> 84.67
      Speed 1 29.48 -> 22.22
      Speed 2 11.76 -> 8.21
      Speed 3 12.32 -> 7.21
      
      Encode speed impact is broadly in line with these.
      
      Change-Id: I5b886efee3077a11553fa950d796fd6d00c8cb19
      aa5b67ad
    • Paul Wilkins's avatar
      Limit Key frame Intra modes checks. · f76f52df
      Paul Wilkins authored
      Most of the focus so far has been on inter frames.
      
      At high speed settings the key frame is now taking a high %
      of the cycles.
      
      This patch puts in some masking to reduce the number
      of INTRA modes searched during key frame coding (as already
      happens for inter frames) at higher speed settings
      
      TODO: Develop this further with either adaptive rd thresholds
      when choosing which intra modes to consider or some other
      heuristic.
      
      Impact.
      At high speed settings on some clips the key frame was starting
      to dominate. In a coding of the first 50 frames of AKIYO at speed
      2 limiting the key frame intra modes to DC or TM_PRED resulted in
      ~30% overall speedup. For Bus the number was lower at ~4-5%.
      
      Change-Id: I7bde68aee04995f9d9beb13a1902143112e341e2
      f76f52df
  14. 22 Aug, 2013 3 commits
    • James Zern's avatar
      vp9/encoder: fix last_frame_seg_map mem leak · a5726ac4
      James Zern authored
      remove duplicate allocation from vp9_create_compressor, it was added to
      vp9_alloc_frame_buffers in:
      
      d5bec522 Added resizing & initialization of last frame segment map
      
      Change-Id: I996723226a16a62aff8f9a52ac74e0b73cc98fdf
      a5726ac4
    • Jingning Han's avatar
      Refactor rd_pick_partition for parameter control · 01a37177
      Jingning Han authored
      This commit changes the partition search order of superblocks from
      {SPLIT, NONE, HORZ, VERT} to {NONE, SPLIT, HORZ, VERT} for
      consistency with that of sub8x8 partition search. It enable the use
      of early termination in partition search for all block sizes.
      
      For ped_area_1080p 50 frames coded at 4000 kbps, it makes the runtime
      goes down from 844305ms -> 818003ms (3% speed-up) at speed 0.
      
      This will further move towards making the in-search partition types
      configurable, hence unifying various speed-up approaches.
      
      Some speed 1 and 2 features are turned off during the refactoring
      process, including:
      disable_split_var_thresh
      using_small_partition_info
      
      Stricter constraints are applied to use_square_partition_only for
      right/bottom boundary blocks. Will bring back/refine these features
      subsequently. At this point, it makes derf set at speed 1 about
      0.45% higher in compression performance, and 9% down in run-time.
      
      Change-Id: I3db9f9d1d1a0d6cbe2e50e49bd9eda1cf705f37c
      01a37177
    • Deb Mukherjee's avatar
      Fixes on feature disabling split based on variance · 8b810c7a
      Deb Mukherjee authored
      Adds a couple of minor fixes, which may be absorbed in Jingning's
      patch. Thanks to Guillaume for pointing these out.
      Also adjusts the thresholds for speed 1 and 2 to 16 and 32
      respectively, to keep quality drops small.
      
      Results:
      --------
      derfraw300:  threshold = 16, psnr -0.082%, speedup 2-3%
                   threshold = 32, psnr -0.218%, speedup 5-6%
      stdhdraw250: threshold = 16, psnr -0.031%, speedup 2-3%
                   threshold = 32, psnr -0.273%, speedup 5-6%
      
      Change-Id: I4b11ae8296cca6c2a9f644be7e40de7c423b8330
      8b810c7a
  15. 20 Aug, 2013 2 commits
    • Deb Mukherjee's avatar
      Cleanup/enhancements of switchable filter search · 2ffe64ad
      Deb Mukherjee authored
      Cleans up the switchable filter search logic. Also adds a
      speed feature - a variance threshold - to disable filter search
      if source variance is lower than this value.
      
      Results: derfraw300
      threshold = 16, psnr -0.238%, 4-5% speedup (tested on football)
      threshold = 32, psnr -0.381%, 8-9% speedup (tested on football)
      threshold = 64, psnr -0.611%, 12-13% speedup (tested on football)
      threshold = 96, psnr -0.804%, 16-17% speedup (tested on football)
      
      Based on these results, the threshold is chosen as 16 for speed 1,
      32 for speed 2, 64 for speed 3 and 96 for speed 4.
      
      Change-Id: Ib630d39192773b1983d3d349b97973768e170c04
      2ffe64ad
    • Paul Wilkins's avatar
      Changes to auto partition size selection. · e8923fe4
      Paul Wilkins authored
      Changes to code to auto select a partition size range
      based on data from spatial neighbors.
      
      Now looks at the sb_type in each 8x8 block of above
      and left SB64.
      
      The effect on speed 1 is now weaker giving better
      quality but less speed gain. Now also used in speed 2.
      
      Change-Id: Iace33a97d5c3498dd2a9a8a4067351941abcbabc
      e8923fe4
  16. 16 Aug, 2013 1 commit
  17. 15 Aug, 2013 2 commits
    • Dmitry Kovalev's avatar
      Moving segmentation struct from MACROBLOCKD to VP9_COMMON. · b7616e38
      Dmitry Kovalev authored
      VP9_COMMON is the right place to segmentatation struct because it has
      global segmentation parameters, not something specific to macroblock
      processing.
      
      Change-Id: Ib9ada0c06c253996eb3b5f6cccf6a323fbbba708
      b7616e38
    • Deb Mukherjee's avatar
      Speed feature to skip split partition based on var · 24856b6a
      Deb Mukherjee authored
      Adds a speed feature to disable split partition search based on a
      given threshold on the source variance. A tighter threshold derived
      from the threshold provided is used to also disable horizontal and
      vertical partitions.
      
      Results on derfraw300:
      threshold = 16, psnr = -0.057%, speedup ~1% (football)
      threshold = 32, psnr = -0.150%, speedup ~4-5% (football)
      threshold = 64, psnr = -0.570%, speedup ~10-12% (football)
      
      Results on stdhdraw250:
      threshold = 32, psnr = -0.18%, speedup is somewhat more than derf
      because of a larger number of smoother blocks at higher resolution.
      
      Based on these results, a threshold of 32 is chosen for speed 1,
      and a threshold of 64 is chosen for speeds 2 and above.
      
      Change-Id: If08912fb6c67fd4242d12a0d094783a99f52f6c6
      24856b6a
  18. 13 Aug, 2013 1 commit
    • Paul Wilkins's avatar
      Trivial clean up. · 5459f68d
      Paul Wilkins authored
      Delete unused / commented out  variable references.
      
      Change-Id: Iaf20c0c3744f89adb296d153b516b5ea41b4f3b4
      5459f68d
  19. 12 Aug, 2013 2 commits
  20. 10 Aug, 2013 2 commits
  21. 09 Aug, 2013 3 commits