1. 10 Aug, 2017 1 commit
    • Jingning Han's avatar
      Refactor lv-map rate cost estimation · dfd72323
      Jingning Han authored
      Use the rate cost to replace the probability fetch. This improves
      the encoding speed of level map by 10%. No coding stats change.
      
      Change-Id: Iab0beac5da291eed50f657549667d4edffb4ead8
      dfd72323
  2. 03 Aug, 2017 2 commits
    • hui su's avatar
      Calculate coeff token cost before encoding each SB · bd57abe0
      hui su authored
      Compression gain:
      AWCY
      PSNR	PSNR HVS	SSIM	CIEDE 2000
      -0.42	-0.15   	-0.38	-0.62
      
      Google testsets
      lowres -0.18%
      midres -0.32%
      
      No obvious encoding speed changes observed.
      
      Change-Id: I888cf4b22b591d79d80b2d77c9eb10d84e5de722
      bd57abe0
    • hui su's avatar
      Calculate coeff token cost from CDF · c0cf71df
      hui su authored
      AWCY results:
      PSNR	PSNR HVS  SSIM	CIEDE 2000
      -0.09	-0.04	  -0.02	  -0.03
      
      On Google testsets:
      lowres  -0.18%
      midres  -0.20%
      
      Above results are obtained with
      --disable-ext-refs --disable-dual-filter --disable-loop-restoration
      --disable-global-motion --disable-warped-motion
      
      Change-Id: Iba58d5e5ec9a65d0afba29609aa2e379a80d7236
      c0cf71df
  3. 01 Aug, 2017 1 commit
    • Zoe Liu's avatar
      Add encoder support to ALTREF2 · e9b15e2b
      Zoe Liu authored
      This CL adds the use of ALTREF2_FRAME to both single / comp reference
      prediction at the encoder side. In particular, the encoder keeps the
      distant altref as ALTREF, and uses the internal extra altrefs to
      refresh ALTREF2.
      
      Compared with the baseline (ext_tx and global_motion disabled simply
      for speed concern):
      (a) lowres: avg_psnr -0.395% ovr_psnr -0.393% ssim -0.329%
      (b) midres: avg_psnr -0.419% ovr_psnr -0.431% ssim -0.444%
      (c) AWCY High Latency:
         PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
      -0.6661 | -0.5988 | -0.6669 |  -0.6993 | -0.6988 | -0.7303 | -0.6051
      (d) AWCY Low Latency:
        PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
      0.0720 | -0.0505 |  0.1501 |   0.0670 | 0.0842 |  0.0517 |     0.0158
      
      TODO list:
      (1) To have altref2 incorporated with ext-comp-refs;
      (2) To have altref2 fully work with new-multisymbol;
      (3) To re-collect the initial default probs/cdfs;
      (4) To tune the encoder gf group structure design for altref2.
      
      Change-Id: I6ad63fd65afa903d3bba20acdb68e3b67acf7fdf
      e9b15e2b
  4. 31 Jul, 2017 1 commit
    • Yue Chen's avatar
      Move mode costs that can be updated inside a frame to MACROBLOCK · b23d00a0
      Yue Chen authored
      It is a refactoring patch, which aims to make the code ready for
      implementation of in-frame mode cost update in RDO.
      Also add mode cost update per sb row, but it won't affect coding
      results because cdf update in RDO is not there.
      Mode cost arrays are moved to MACROBLOCK because in multi-thread
      coding, threads share the same AV1_COMP.
      
      This patch does not have impact on coding results.
      
      Change-Id: I2e8f7d7d066b23ebfbfc998269023781f359a6ff
      b23d00a0
  5. 28 Jul, 2017 1 commit
    • Jingning Han's avatar
      Conditionally skip inverse transform in transform block RD · 1a7f0a8c
      Jingning Han authored
      When the lower bound of a transform block rate-distortion cost is
      above the current best rd cost, the only possibility that this
      particular coding mode will be chosen is to fall back to all skip
      mode. Hence there is no need to estimate the transform block rate
      cost, distortion, etc. Obtain the sum of squared distance between
      the prediction and the source would be sufficient.
      
      This speeds up the encoding process by 5% - 10%.
      
      Change-Id: I728728c3a42aafefd34641f0be69b3e2a9b9bbb2
      1a7f0a8c
  6. 26 Jul, 2017 1 commit
    • Jingning Han's avatar
      Optimize transform block rate-distortion search · 3bce7547
      Jingning Han authored
      The soft coefficient optimization process would monotonically
      increase the transform block distortion and decrease the
      coefficient rate cost. Such observation provides a lower bound
      on the rate-distortion cost for the given transform block. This
      commit compares this lower bound against the best available
      rate-distortion cost value and skips unnecessary optimization
      process. It speeds up the baseline encoding process by 15%.
      
      Change-Id: Ida8098a2820cef60d59ec1e72f0bbb1acbd98165
      3bce7547
  7. 20 Jul, 2017 1 commit
    • Yushin Cho's avatar
      New experiment DIST_8x8 · b7b60c57
      Yushin Cho authored
      A framework for computing a distortion at 8x8 luma block level
      during RDO-based mode decision search. New 8x8 distortion metric can
      be plugged in by way of this tool.
      
      Existing daala_dist now uses this experiment as well.
      Other possible applications that can make use of this experiment would be
      a distortion meric, which should apply at 8x8 pixels such as PSNR-HVS, SSIM, or etc.
      
      A rd_cost for final coding mode decision for a super block is
      computed for a partition size 8x8 or larger. For a block larger than 8x8,
      a distortion of each 8x8 block is independently computed then summed up.
      
      The rd_cost for 8x8 block with new 8x8 distortion metric is computed
      only when the mode decision of its sub8x8 blocks are completed.
      However, MSE distortion metric is used with sub8x8 mode decision. Thus,
      early termination is also determined with the MSE based rd_cost.
      Because the best rd_cost (i.e. the reference rd_cost) during sub8x8 prediction
      or sub8x8 tx is based on new 8x8 distortion while each sub8x8 uses MSE,
      the existing early termination cannot be used (And this can be the one of possible reason
      for the BD-Rate change with this revision).
      
      For a sub8x8 prediction, prediction mode for each sub8x8 block of a 8x8 block is
      decided with existing MSE and then av1_dist_8x8() is applied to the 8x8 pixels.
      (There is also av1_dist_8x8_diff, which can input diff signal directly)
      
      For a sub8x8 tx in a block larger than 8x8, instead of computing MSE distortion for
      each sub8x8 tx block, we wait until all sub8x8 tx blocks are encoded before av1_dist_8x8()
      is applied to 8x8 pixels.
      
      Sub8x8 prediction and transformas were most of tricky parts in this change.
      Two kind of distortions, for a) predicted pixels and b) decoded pixels
      (i.e. predicted + possible reconstructed residue), are always computed during RDO.
      In order to access those two signals a) and b) for a 8x8 block after
      its sub8x8 mode decision is finished, a) and b) need be properly stored for later retrieval.
      
      The CB4X4 makes the task of accessing a) and b) signals for sub8x8 block further difficult,
      since the intermediate data (i.e. a and/or b) for sub8x8 block
      are not easily accessible outside of current partition unless reconstruced
      with decided coding modes.
      
      Change-Id: If60301a890c0674a3de1d8206965bbd6a6495bb7
      b7b60c57
  8. 12 Jul, 2017 2 commits
    • Rupert Swarbrick's avatar
      ext-partition-types: Add 4:1 partitions · 93c39e91
      Rupert Swarbrick authored
      This patch adds support for 4:1 rectangular blocks to various common
      data arrays, and adds new partition types to the EXT_PARTITION_TYPES
      experiment which will use them.
      
      This patch has the following restrictions, which can be lifted in
      future patches:
      
        * ext-partition-types is incompatible with fp_mb_stats and supertx
          for the moment
      
        * Currently only 32x32 superblocks can use the new partition types
      
      There's a slightly odd restriction about when we allow
      PARTITION_HORZ_4 or PARTITION_VERT_4. Since these both live in the
      EXT_PARTITION_TYPES CDF, read_partition() can only return them if both
      has_rows and has_cols is true. This means that at least half of the
      width and height of the block must be visible. It might be nice to
      relax that restriction but that would imply a change to how we encode
      partition types, which seems already to be in a state of flux, so
      maybe it's better to wait until that has settled down.
      
      Change-Id: Id7fc3fd0f762f35f63b3d3e3bf4e07c245c7b4fa
      93c39e91
    • Zoe Liu's avatar
      Further work on ext-comp-refs for ref frame coding · fcf5fa27
      Zoe Liu authored
      (1) Work with var-refs to remove redundant bits in ref frame
          coding;
      (2) Add a new uni-directional compound reference pair:
          (LAST_FRAME, LAST3_FRAME);
      (3) Redesign the contexts for encoding uni-directional reference frame
          pairs;
      (4) Use aom_entropy_optimizer to collect stats for all the default
          probability setups related to the coding of reference frames.
      
      Compared against the baseline (default enabled tools excluding ext-tx
      and global-motion for encoder speed concern) with one-sided-compound,
      the coding gain of ext-comp-refs + var-refs - one-sided-compound is:
      
      lowres: avg_psnr -0.385%; ovr_psnr -0.378% ssim -0.344%
      midres: avg_psnr -0.466%; ovr_psnr -0.447% ssim -0.513%
      
      AWCY - High Latency:
         PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
      -0.2758 | -0.1526 | -0.0965 |  -0.2581 | -0.2492 | -0.2534 |    -0.2118
      
      AWCY - Low Latency:
         PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
      -1.0467 | -1.4500 | -0.9732 |  -0.9928 | -1.0407 | -1.0180 |    -1.0049
      
      Compared against the baseline (default enabled tools excluding ext-tx
      and global-motion for encoder speed concern) without
      one-sided-compound, the coding gain of
      ext-comp-refs + var-refs - one-sided-compound is:
      
      lowres: avg_psnr -0.875%; ovr_psnr -0.877% ssim -0.895%
      midres: avg_psnr -0.824%; ovr_psnr -0.802% ssim -0.843%
      
      Change-Id: I8de774c9a74c20632ea93ccb0c17779fa94431cb
      fcf5fa27
  9. 19 Jun, 2017 1 commit
    • Zoe Liu's avatar
      Add new coding tool of ext-comp-refs · c082bbcb
      Zoe Liu authored
      The tool of ext-comp-refs adds the uni-directional compound reference
      prediction. In details, 3 pairs of uni-direcitonal compound references
      are added for the comp ref prediction:
      (LAST_FRAME, LAST2_FRAME),
      (LAST_FRAME, GOLDEN_FRAME), and
      (BWDREF_FRAME, ALTREF_FRAME).
      
      This new tool of ext-comp-refs will eventually overwrite
      one-side-compound and have the two coding tools to merge to one.
      
      It achieves -0.35 ~ -0.55% coding gains in BDRate, compared against
      AV1 baseline with the default experiments on, but without
      one-sided-compound. It achieves -0.2% ~ -0.3% coding gains when
      one-sided-compound is on. It achieves larger gains on higher
      resolution.
      
      Change-Id: Icbdb16e97b96aaebaf2213f5f72d5331e2e358eb
      c082bbcb
  10. 15 Jun, 2017 1 commit
    • Urvang Joshi's avatar
      Remove 'rddiv' member from various structs. · 70006e46
      Urvang Joshi authored
      This was initialized from a const and never modified. But was still
      passed around and stored in multiple structs.
      
      Removed these 'rddiv' member variables and now RDOPT() and RDOPT_DBL()
      always use the const RDDIV_BITS directly.
      
      Change-Id: I1a8dfd2c8fa857d466ad1207b4f0dd6ec07eafb8
      70006e46
  11. 13 Jun, 2017 1 commit
    • Zoe Liu's avatar
      Add encoder/decoder pipeline to support single ref comp modes · 85b66463
      Zoe Liu authored
      Now the single ref comp mode should work with WEDGE and
      COMPOUND_SEGMENT. For motion_var, the OBMC_CAUSAL mode uses the 2nd
      predictor if the neighboring block is single ref comp mode predicted.
      
      This patch removes the mode of SR_NEAREST_NEWMV and leaves four
      single ref comp modes in total:
      
      SR_NEAREST_NEARMV
      SR_NEAR_NEWMV
      SR_ZERO_NEWMV
      SR_NEW_NEWMV
      
      Change-Id: If6140455771f0f1a3b947766eccf82f23cc6b67a
      85b66463
  12. 12 Jun, 2017 1 commit
  13. 01 Jun, 2017 1 commit
    • Yushin Cho's avatar
      Fix daala-dist for cb4x4 · 63927c43
      Yushin Cho authored
      The place where av1_daala_dist() is applied for sub8x8 partition is
      moved from sub8x8 mode decision functions to rd_pick_partition().
      
      BD-Rate change by daala-dist with '--disable-var-tx' is:
      (AWCY, objective-1-fast, high delay mode)
      
         PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
      15.1558 | 12.9585 | 14.4662 |  -3.8651 | -1.7102 | -9.2956 |    10.8686
      
      In MSE probe mode:
      
        PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
      0.0429 |  0.0435 |  0.1651 |  -0.0415 | 0.0850 |  0.0122 |     0.0546
      
      Change-Id: I3b2ea916d41c48e433eb641adf44552e4725c198
      63927c43
  14. 08 May, 2017 1 commit
    • Urvang Joshi's avatar
      Add a new experiment SMOOTH_HV. · e6ca8e83
      Urvang Joshi authored
      This experiment extends ALT_INTRA by adding two new modes:
      smooth horizontal and smooth vertical.
      
      Improvement on *intra frames* in BDRate (PSNR):
      ===============================================
      
      AWCY (high latency): -0.46%
      (Also, -1.0% or more on PSNR Cb,Cr and APSNR Cb,Cr).
      
      AWCY (low latency): -0.43%
      (Also, -0.88% to -0.94% on PSNR Cb,Cr and APSNR Cb,Cr).
      
      Google sets:
      lowres: -0.454
      midres: -0.484
      hdres:  -0.525
      
      Improvement on *video overall* in BDRate (PSNR):
      ================================================
      
      AWCY (high latency): -0.15%
      
      Google sets:
      lowres: -0.085
      midres: -0.079
      
      Change-Id: I9f4e7c1b8ded1fe244c72838f336103ccc715d50
      e6ca8e83
  15. 05 May, 2017 1 commit
  16. 26 Apr, 2017 1 commit
  17. 11 Apr, 2017 1 commit
  18. 28 Nov, 2016 1 commit
    • Urvang Joshi's avatar
      Add a new intra prediction mode "smooth". · 6be4a54b
      Urvang Joshi authored
      This is added as part of ALT_INTRA experiment.
      
      This uses interpolation between top row and estimated bottom row; as
      well as left column and estimated right column to generate the
      predicted block.The interpolation is done using a predefined weight
      array.
      
      Based on experiments, the currently chosen weight array was created
      to represent a quadratic curve, but can be tuned further if needed.
      
      Improvement from baseline on Derf set:
      ALL Keyframes: 1.279%
      
      Improvement from existing ALT_INTRA:
      ALL Keyframes: 1.146%
      
      Change-Id: I12637fa1b91bd836f1c59b27d6caee2004acbdd4
      6be4a54b
  19. 19 Oct, 2016 1 commit
    • Urvang Joshi's avatar
      Code cleanup: mainly rd_pick_partition and methods called from there. · 52648448
      Urvang Joshi authored
      - Const correctness
      - Refactoring
      - Make variables local when possible etc
      - Remove -Wcast-qual to allow explicitly casting away const.
      
      Cherry-picked from aomedia/master: c27fcccc
      And then a number of more const correctness changes to make sure other
      experiments build OK.
      
      Change-Id: I77c18d99d21218fbdc9b186d7ed3792dc401a0a0
      52648448
  20. 12 Oct, 2016 1 commit
  21. 29 Sep, 2016 1 commit
  22. 19 Sep, 2016 1 commit
    • Alex Converse's avatar
      Move ANS to aom_dsp. · 1ac1ae73
      Alex Converse authored
      That's where it lives in aom/master.
      
      Change-Id: I38f405827d9c2d0b06ef5f3bfd7cadc35d5991ef
      1ac1ae73
  23. 02 Sep, 2016 1 commit
  24. 01 Sep, 2016 2 commits
  25. 25 Aug, 2016 1 commit
  26. 12 Aug, 2016 1 commit
  27. 10 Aug, 2016 1 commit
    • Yaowu Xu's avatar
      Change to use proper types · d67a8feb
      Yaowu Xu authored
      block: from int64_t to int as it is a block index.
      sse: from unsigned int to int64_t to reduce type conversion. 
      
      Change-Id: Iec8104ff8a3fd3a77d4e451c12918bd869966c2f
      d67a8feb
  28. 04 Aug, 2016 1 commit
    • Zoe Liu's avatar
      Code refactoring on Macros related to ref frame numbers · 1af28f02
      Zoe Liu authored
      We have renamed following Macros to avoid name confusion:
      
      REFS_PER_FRAME --> INTER_REFS_PER_FRAME
      (= ALTREF_FRAME - LAST_FRAME + 1)
      MAX_REF_FRAMES --> TOTAL_REFS_PER_FRAME
      (= ALTREF_FRAME - INTRA_FRAME + 1)
      
      INTER_REFS_PER_FRAME specifies the maximum number of reference frames
      that each Inter frame may use.
      TOTAL_REFS_PER_FRAME is equal to INTER_REFS_PER_FRAME + 1, which
      counts the INTRA_FRAME.
      
      Further, at the encoder side, since REF_FRAMES specifies the maximum
      number of the reference frames that the encoder may store, REF_FRAMES
      is usually larger than INTER_REFS_PER_FRAME. For example, in the
      ext-refs experiment, REF_FRAMES == 8, which allows the encoder to
      store maximum 8 reference frames in the buffer, but
      INTER_REFS_PER_FRAME equals to 6, which allows each Inter frame may
      use up to 6 frames out of the 8 buffered frames as its references.
      Hence, in order to explore the possibility to store more reference
      frames in future patches, we modified a couple of array sizes to
      accomodate the case that the number of buffered reference frames is
      not always equal to the number of the references that are being used
      by each Inter frame.
      
      Change-Id: I19e42ef608946cc76ebfd3e965a05f4b9b93a0b3
      1af28f02
  29. 17 Jun, 2016 1 commit
    • Zoe Liu's avatar
      Merge bi-predictive frames to EXT_REFS · 5805a14c
      Zoe Liu authored
      This patch removed the experiment of BIDIR_PRED and merged the feature
      into the experiment of EXT_REFS:
      
      (1) Each frame now has up to 6 reference frames, namely
          LAST_FRAME, LAST2_FRAME, LAST3_FRAME, GOLDEN_FRAME, (forward) and
          BWDREF_FRAME, ALTREF_FRAME (backward);
          LAST4_FRAME has been removed;
      (2) First pass still keeps the 8 updates:
          KF_UPDATE, LF_UPDATE, GF_UPDATE, ARF_UPDATE, OVERLAY_UPDATE, and
          BRF_UPDATE, LAST_BIPRED_UPDATE, BI_PRED_UPDATE;
      (3) show_existing_frame==1 is supported in the experiment of EXT_REFS;
      (4) New encoding modes are added for both single-ref and compound cases,
          through the use of the 2 extra forward references (LAST2 & LAST3)
          and the 1 extra backward reference (BWDREF).
      
      RD performance wise, using Overall PSNR: Avg/BDRate
              Bipred only      Prev EXT_REFS    Current EXT_REFS with bipred
      lowres: -3.474/-3.324    -1.748/-1.586    -4.613/-4.387
      derflr: -2.097/-1.353    -1.439/-1.215    -3.120/-2.252
      midres: -2.129/-1.901    -1.345/-1.185    -2.898/-2.636
      
      If in vp10/encoder/firstpass.h, change BFG_INTERVAL from 2 to 3, i.e. to
      use 2 bi-predictive frames than 1, a further improvement may be
      obtained:
                       Current EXT_REFS with bipred
              1 bi-predictive frame    2 bi-predictive frames
      lowres: -4.613/-4.387            -4.675/-4.465
      derflr: -3.120/-2.252            -3.333/-2.516
      midres: -2.898/-2.636            -3.406/-3.095
      
      Change-Id: Ib06fe9ea0a5cfd7418a1d79b978ee9d80bf191cb
      5805a14c
  30. 14 Jun, 2016 1 commit
  31. 24 May, 2016 1 commit
    • Zoe Liu's avatar
      Added an experiment "bidir_pred" for backward prediction · cf5083d4
      Zoe Liu authored
      Major parts have been implemented as follows:
      (1) Added BRF_UPDATE, LASTNRF_UPDATE, and NRF_UPDATE in firstpass.c;
      (2) Added the handling for the scenario of
      "cpi->common.show_existing_frame == 1" at the encoder;
      (3) Added a new reference frame of BWDREF_FRAME;
      (4) Have bwd-ref work with upsampled references.
      
      Note that when the experiment of "ext_refs" turned on, this experiment
      will be turned off automatically currently.
      
      RD performance in Overall PSNR has been improved, compared against the
      VP10 baseline:
      
      lowres: Avg -3.312; BDRate -3.154
      derflr: Avg -1.927; BDRate -1.176
      midres: Avg -2.149; BDRate -2.001
      hdres : Avg -0.567; BDRate -0.588
      
      Change-Id: I4c06ff51cc20194bffbd4d2346e57ba3dcf6b62c
      cf5083d4
  32. 28 Apr, 2016 1 commit
  33. 19 Apr, 2016 1 commit
  34. 12 Apr, 2016 1 commit
  35. 07 Apr, 2016 1 commit
    • Geza Lore's avatar
      Make superblock size variable at the frame level. · 454989ff
      Geza Lore authored
      The uncompressed frame header contains a bit to signal whether the
      frame is encoded using 64x64 or 128x128 superblocks. This can vary
      between any 2 frames.
      
      vpxenc gained the --sb-size={64,128,dynamic} option, which allows the
      configuration of the superblock size used (default is dynamic). 64/128
      will force the encoder to always use the specified superblock size.
      Dynamic would enable the encoder to choose the sb size for each
      frame, but this is not implemented yet (dynamic does the same as 128
      for now).
      
      Constraints on tile sizes depend on the superblock size, the following
      is a summary of the current bitstream syntax and semantics:
      
      If both --enable-ext-tile is OFF and --enable-ext-partition is OFF:
           The tile coding in this case is the same as VP9. In particular,
           tiles have a minimum width of 256 pixels and a maximum width of
           4096 pixels. The tile width must be multiples of 64 pixels
           (except for the rightmost tile column). There can be a maximum
           of 64 tile columns and 4 tile rows.
      
      If --enable-ext-tile is OFF and --enable-ext-partition is ON:
           Same constraints as above, except that tile width must be
           multiples of 128 pixels (except for the rightmost tile column).
      
      There is no change in the bitstream syntax used for coding the tile
      configuration if --enable-ext-tile is OFF.
      
      If --enable-ext-tile is ON and --enable-ext-partition is ON:
           This is the new large scale tile coding configuration. The
           minimum/maximum tile width and height are 64/4096 pixels. Tile
           width and height must be multiples of 64 pixels. The uncompressed
           header contains two 6 bit fields that hold the tile width/heigh
           in units of 64 pixels. The maximum number of tile rows/columns
           is only limited by the maximum frame size of 65536x65536 pixels
           that can be coded in the bitstream. This yields a maximum of
           1024x1024 tile rows and columns (of 64x64 tiles in a 65536x65536
           frame).
      
      If both --enable-ext-tile is ON and --enable-ext-partition is ON:
           Same applies as above, except that in the bitstream the 2 fields
           containing the tile width/height are in units of the superblock
           size, and the superblock size itself is also coded in the bitstream.
           If the uncompressed header signals the use of 64x64 superblocks,
           then the tile width/height fields are 6 bits wide and are in units
           of 64 pixels. If the uncompressed header signals the use of 128x128
           superblocks, then the tile width/height fields are 5 bits wide and
           are in units of 128 pixels.
      
      The above is a summary of the bitstream. The user interface to vpxenc
      (and the equivalent encoder API) behaves a follows:
      
      If --enable-ext-tile is OFF:
           No change in the user interface. --tile-columns and --tile-rows
           specify the base 2 logarithm of the desired number of tile columns
           and tile rows. The actual number of tile rows and tile columns,
           and the particular tile width and tile height are computed by the
           codec ensuring all of the above constraints are respected.
      
      If --enable-ext-tile is ON, but --enable-ext-partition is OFF:
           No change in the user interface. --tile-columns and --tile-rows
           specify the WIDTH and HEIGHT of the tiles in unit of 64 pixels.
           The valid values are in the range [1, 64] (which corresponds to
           [64, 4096] pixels in increments of 64.
      
      If both --enable-ext-tile is ON and --enable-ext-partition is ON:
           If --sb-size=64 (default):
               The user interface is the same as in the previous point.
               --tile-columns and --tile-rows specify tile WIDTH and HEIGHT,
               in units of 64 pixels, in the range [1, 64] (which corresponds
               to [64, 4096] pixels in increments of 64).
           If --sb-size=128 or --sb-size=dynamic:
               --tile-columns and --tile-rows specify tile WIDTH and HEIGHT,
               in units of 128 pixels in the range [1, 32] (which corresponds
               to [128, 4096] pixels in increments of 128).
      
      Change-Id: Idc9beee1ad12ff1634e83671985d14c680f9179a
      454989ff
  36. 31 Mar, 2016 1 commit
    • Geza Lore's avatar
      Rename MI_BLOCK_SIZE and MI_MASK macros. · 511da8cb
      Geza Lore authored
      Rename MI_BLOCK_SIZE.* -> MAX_MIB_SIZE.* (MIB is for MI Block).
      Rename MI_MASK.* -> MAX_MIB_MASK.*
      
      There are no functional changes.
      
      This is in preparation for coding the superblock size at the frame
      level, which will require some of these constants to become variables.
      The new names better reflect future semantics, and hence make the code
      clearer.
      
      Change-Id: Iee08d97554cf4cc16a5dc166a3ffd1ab91529992
      511da8cb
  37. 30 Mar, 2016 1 commit
    • Geza Lore's avatar
      Extend superblock size fo 128x128 pixels. · 552d5cd7
      Geza Lore authored
      If --enable-ext-partition is used at build time, the superblock size
      (sometimes also referred to as coding unit (CU) size) is extended to
      128x128 pixels.
      
      Change-Id: Ie09cec6b7e8d765b7555ff5d80974aab60803f3a
      552d5cd7