1. 15 Dec, 2011 2 commits
    • Adrian Grange's avatar
      Fixed stride bug in segmentation code · b3ade15a
      Adrian Grange authored
      mode_info_context is padded with an additional column of data, so
      mode_info_stride should be used to move between rows rather than
      mb_cols.
      
      Change-Id: I598559a2cd9df1c486d64aaeccf76b76a7ecf21c
      b3ade15a
    • Adrian Grange's avatar
      Fixed bug to use mode_info_stride rather than mb_cols · ae63ce24
      Adrian Grange authored
      Both encoder & decoder were using mb_cols to
      offset from one row of MODE_INFO structures to the next
      when they should have been using mode_info_stride.
      
      Fixing this in both encoder and decoder gives around
      a 3KB size saving and 0.025dB PSNR improvement on the one
      720P clip I tried.
      
      (Also removed "index" which was being updated but not used)
      
      Change-Id: I413bea802b142886bfcf8d8aa7f5a2f0c524fd4b
      ae63ce24
  2. 12 Dec, 2011 1 commit
    • Paul Wilkins's avatar
      QINDEX_RANGE fixed tables. · ae9023a3
      Paul Wilkins authored
      Removed a couple more fixed tables for the extended quantizer experiment
      that depend on QINDEX_RANGE.
      
      Change-Id: I2c15ffc7488c2a2b8d6504e2c4b6b2339799d117
      ae9023a3
  3. 09 Dec, 2011 5 commits
  4. 08 Dec, 2011 1 commit
    • Yaowu Xu's avatar
      fixed a crash caused invalid Q choice · ebcc6605
      Yaowu Xu authored
      The commit fixed a problem by capping cpi->active_best_quality to be
      smaller than cpi->worst_quality.  Also fixed a few line of code that
      was misplaced.
      
      Change-Id: Ie908264b72140c669122a0afde5d886619c33474
      ebcc6605
  5. 07 Dec, 2011 8 commits
    • Yaowu Xu's avatar
      Removed #if CONFIG_MULCONTEXT · b70f23ca
      Yaowu Xu authored
      This commit removed the macro CONFIG_MULCONTEXT, which was used to
      indicate the experiment code for using separate context for altref
      and normal frames. This commit made the change fully merged in.
      
      Change-Id: I525f927f68e2365d37b340ef23b836a136a4f70b
      b70f23ca
    • Yaowu Xu's avatar
      Removed #if CONFIG_I8X8 · d37cd976
      Yaowu Xu authored
      This commit removed the macro CONFIG_I8X8, which was used to indicate
      the 8x8 intra prediction experiment, made the change fully merged in.
      
      Change-Id: Iafa4443781ce6e83f5591c12ba615a0e92ce0ea0
      d37cd976
    • Yaowu Xu's avatar
      made vp8_mode_context adaptive · 76feb965
      Yaowu Xu authored
      vp8_mode_contexts[] is an entropy table used to code inter mode
      choices. It was a fixed constant table. This commit made the entropy
      context adaptive. Tests on derf set showed very good consistent gains
      on all metrics: avg psnr .47%, overall psnr .46% and ssim .40%.
      
      http://www.corp.google.com/~yaowu/no_crawl/newModeContext.html
      
      Change-Id: Ia62b14485c948e2b74586118619c5eb2068b43b2
      76feb965
    • Yaowu Xu's avatar
      fixed a crash when MODE_STATS is enabled · b1823a7d
      Yaowu Xu authored
      The MODE_STATS macro was used to #ifdef around code for mode entropy
      stats collection, this commit fixed a crash when MODE_STATS is on.
      The commit also changed a number of array definitions to use defined
      macros instead of hard-coded numbers.
      
      Change-Id: I114592f53a1e44e31e455f5725f036ae6168735a
      b1823a7d
    • Yaowu Xu's avatar
      Merge "Minor fixes:" into experimental · d0e3acf9
      Yaowu Xu authored
      d0e3acf9
    • Paul Wilkins's avatar
      Minor fixes: · 79774d10
      Paul Wilkins authored
      fixed issues caused by conflicts between two experiments.
      
      Change-Id: I56a9bd69493e4850c121ea057a6233c55777c2a5
      79774d10
    • Ronald S. Bultje's avatar
      Rename use_dc_pred to use_16x16_pred. · 73bbdfe5
      Ronald S. Bultje authored
      Because the variable doesn't distinguish between DC and non-DC
      prediction, but rather between 16x16 or 4x4 prediction.
      
      Change-ID: Ia4e7dda2bd6230c91515072e3277be2d64e42629
      73bbdfe5
    • Yaowu Xu's avatar
      b1781b48
  6. 06 Dec, 2011 4 commits
    • Ronald S. Bultje's avatar
      Fix for RD thresholds if both I8X8 and DUALPRED are enabled. · 0072b8bc
      Ronald S. Bultje authored
      Change-Id: I5f9fc894e6a332d9be6d7336c7c5fe11e65b8498
      0072b8bc
    • Ronald S. Bultje's avatar
      Dual 16x16 inter prediction. · 60cb39da
      Ronald S. Bultje authored
      This patch introduces the concept of dual inter16x16 prediction. A
      16x16 inter-predicted macroblock can use 2 references instead of 1,
      where both references use the same mvmode (new, near/est, zero). In the
      case of newmv, this means that two MVs are coded instead of one. The
      frame can be encoded in 3 ways: all MBs single-prediction, all MBs dual
      prediction, or per-MB single/dual prediction selection ("hybrid"), in
      which case a single bit is coded per-MB to indicate whether the MB uses
      single or dual inter prediction.
      
      In the future, we can (maybe?) get further gains by mixing this with
      Adrian's 32x32 work, per-segment dual prediction settings, or adding
      support for dual splitmv/8x8mv inter prediction.
      
      Gain (on derf-set, CQ mode) is ~2.8% (SSIM) or ~3.6% (glb PSNR). Most
      gain is at medium/high bitrates, but there's minor gains at low bitrates
      also. Output was confirmed to match between encoder and decoder.
      
      Note for optimization people: this patch introduces a 2nd version of
      16x16/8x8 sixtap/bilin functions, which does an avg instead of a
      store. They may want to look and make sure this is implemented to
      their satisfaction so we can optimize it best in the future.
      
      Change-ID: I59dc84b07cbb3ccf073ac0f756d03d294cb19281
      60cb39da
    • Paul Wilkins's avatar
      Some further QIndex issues with extended Q · b4ad9b5d
      Paul Wilkins authored
      Resolved or factored out some further issues with Q index.
      Put in a 3rd order polynomial instead of less accurate power function
      as the best fit on gf and kf boost adjustment.
      Added avg_q value to use instead of ni_av_qi.
      Compute segment delta Q values based on avg_q.
      Fixed bug in adjust_maxq_qrange().
      
      The extended range Q on the derf set, using standard data rates
      (which do not extend high enough to get big benefits) still show
      a shortfall of between 0.5 and 1% though so there would appear to
      be further issues that need to be tracked down.
      
      Change-Id: Icfd49b9f401906ba487ef1bef7d397048295d959
      b4ad9b5d
    • Yaowu Xu's avatar
      corrected an enum name · 0404a5a7
      Yaowu Xu authored
      CNT_INTRA has been used for counting (0,0) motion vectos, this commit
      renames it to CNT_ZEROMV
      
      Change-Id: I8f67c5468370090525faf84ba5b3f780d302443f
      0404a5a7
  7. 05 Dec, 2011 1 commit
  8. 02 Dec, 2011 5 commits
    • Yaowu Xu's avatar
      changed configure script to enable new experimental options · 8a40d2f5
      Yaowu Xu authored
      Added two experimental options to the configure script:
      1. newnear:
         new scheme of doing mv encoding that include a motion vector from
         last frame in nearest and near mv search
      2. mulcontext:
         tracks entropy context separately for regular frames and alt ref
         frames.
      
      Change-Id: If6e0d5d593351707b497a26eb6a763e080f77e6f
      8a40d2f5
    • Yaowu Xu's avatar
      added separate entropy context for alt_ref · acf5d20c
      Yaowu Xu authored
      This commit added code to keep track of separate entropy contexts for
      normal frames and alt ref frames. The underly assumption was that the
      two type of frames have different entropy characteristics given they
      typically have quite different quantization levels. By keeping entropy
      contexts separate, it helps the entropy context distribution to be more
      closely adapted to each frame type.
      
      Tests on derf set showed a good and very consistent gain on all clips
      on all metrics, avg psnr: 0.89%, overall psnr: 0.84% and ssim 0.93%.
      
      http://www.corp.google.com/~yaowu/no_crawl/mulcontext.html
      
      Change-Id: I15bc9697f6ff7829042911fe0c62930585d7e65d
      acf5d20c
    • Yaowu Xu's avatar
      enabled 8x8 intra prediction modes on inter frames · a8fbab86
      Yaowu Xu authored
      This commit enabled the usage of 8x8 intra prediction modes on inter
      frames. There are a few TODO items related to this: 1)baseline entropy
      need be calibrated; 2)cost of UV need to be done more properly rather
      than using decision only relying on Y; 3)Threshold for allowing picking
      8x8 intra prediction should be lowered to lower than the B_PRED.
      
      Even with all the TODOs, tests showed consistent gain on derf set ~0.1%
      (PSNR:0.08% and SSIM:0.14%). It is assumed that 8x8 intra prediction
      will help more on large resolution clips, especially with above TODOs
      addressed.
      
      Change-Id: I398ada49dfc32575cfab962a569c2885111ae3ba
      a8fbab86
    • Paul Wilkins's avatar
      Further work on extended Q range. · 8487a68b
      Paul Wilkins authored
      Fixed some further QIndex related issues and replaced some tables
      (eg zbin and rounding)
      
      Also Added function (currently disabled by default) to populate the
      main AC and DC quantizer tables. Using the original AC range the
      resulting computed DC values give behavior broadly comparable
      on the DERF set. That is not to say that the equations will hold good
      over a more extended range. The purpose of this code is to make it
      easier to experiment with further alterations to the Q range and distribution
      of Q values plus the relative weights given to AC and DC.
      
      The function find_fp_qindex() ensures that changes to the Q tables
      are reflected in the value passed in to the first pass code.
      
      Slight experimental adjustment to static segment Q offset.
      
      Change-Id: I36186267d55dfc2a3d565d0cff7218ef300d1cd5
      8487a68b
    • Paul Wilkins's avatar
      CR/LF issue. · 2b307b38
      Paul Wilkins authored
      Change-Id: I95fab6f51967008acf1bc9e98fdb7bb56974807f
      2b307b38
  9. 01 Dec, 2011 1 commit
    • Yaowu Xu's avatar
      added transform type to MB_MODE_INFO · bba710fc
      Yaowu Xu authored
      this commit is to add an variable in the macroblock level mode
      info structure to track the transform size used in each MB, so
      the information can be used later in the loop filter to change
      how loop filter works on MBs with different transform sizes.
      
      Change-Id: Id0eeaba6cc854c6d1be00ed8d237b3d9e250e447
      bba710fc
  10. 29 Nov, 2011 3 commits
    • Paul Wilkins's avatar
      MinQ equations. · a917afab
      Paul Wilkins authored
      Slight tweaks to the new minq equations to bring results more into line with
      original lookup tables.
      
      Change-Id: I969fc87d95912df549b6775e83ee2345e84d4da0
      a917afab
    • Paul Wilkins's avatar
      Extended Q Range: · b9ce9bcb
      Paul Wilkins authored
      Addressed a couple of other QIndex dependencies.
      
      Change-Id: I15b224bffd0210d3c7065cb6905156f2ca8e9ea9
      b9ce9bcb
    • Paul Wilkins's avatar
      Further work on extended Q range. · 99df6bb6
      Paul Wilkins authored
      Fixed bug in firspass.c call to vp8_initialize_rd_consts()
      
      This was passing in vp8_dc_quant(cm->base_qindex, cm->y1dc_delta_q)
       instead of (cm->base_qindex + cm->y1dc_delta_q).
      
      It just so happens that for the value 26 used for cm->base_qindex in the
      unextended Q case,  the two give similar results. However, when using
      the extended Q range the two are very different.
      
      Also added more stats output and partly disabled another broken feature.
      
      Change-Id: Iddf6cf5ea8467c44b7c133f38e629f6ba6f2581e
      99df6bb6
  11. 28 Nov, 2011 2 commits
  12. 23 Nov, 2011 2 commits
    • Paul Wilkins's avatar
      Two pass rate control code changes. · ee2051f6
      Paul Wilkins authored
      This comitt brings accross changes from the public branch
      commit number Icf74d13af77437c08602571dc7a97e747cce5066.
      
      The main puurpose of this comit relates to CQ mode but it
      also includes some refactoring of the two pass code which
      I hope will make tuning the experimental branch for the new
      quantizer range a little less painfull.
      
      Change-Id: I278e989436a928fc1fe7761068960048f9d7a376
      ee2051f6
    • Paul Wilkins's avatar
      Further resolution of QIndex LUTS; · a0b7db22
      Paul Wilkins authored
      This commit resolves further QIndex look up tables to facilitate
      experimentation with the quantizer range.
      
      In some cases  rather than remove the look up tables completely
      I have created functions that are called once  to populate them
      using a formulaic approach base on the actual quantizer.
      
      The use of these functions based on best fit of data from the original
      tables does affect the results on some clips but across the derf test
      set the effect was broadly neutral.
      
      Change-Id: I8baa61c97ce87dc09a6340d56fdeb681b9345793
      a0b7db22
  13. 22 Nov, 2011 2 commits
    • Adrian Grange's avatar
      Remove redundant code (lf_or_gf and frame_lf_or_gf) · 08491b86
      Adrian Grange authored
      Removed unused variables lf_or_gf and frame_lf_or_gf.
      
      Change-Id: I88692cd7d53e532d303c4525ee4667c1ecea3026
      08491b86
    • Paul Wilkins's avatar
      Removal of Qindex LUTS. · d39b5d05
      Paul Wilkins authored
      One of the problems arising when tweaking or adjusting the quantizer
      tables is that there are a lot of look up tables that depend on the QINDEX.
      Any adjustment to the link between QINDEX and real quantizer therefore tends
      to break aspects of for example the rate control.
      
      In this check in I have replaced several of the look up tables with functions that
      approximate the same results as the old Q luts but use a formulaic approach
      based on real Q values rather than QIndex. This should hopefully make it easier
      to experiment with changes to the Q tables without always having to go through
      and hand optimize a set of look up tables. Once things stabilize we may choose
      to re-instate luts for the sake of performance.
      
      Patch 2:
          Addressed Ronald's comments.
          vp8_init_me_luts() Added so luts only initialized once.
      
      Change-Id: Ic80db2212d2fd01e08e8cb5c7dca1fda1102be57
      d39b5d05
  14. 21 Nov, 2011 3 commits
    • Paul Wilkins's avatar
      Extended Q range Experiment. · 9bac509a
      Paul Wilkins authored
      Corrected dc lookup table to maintain ac/dc balance
      close to what it was previously.
      
      Firstpass not being passed the adjusted Q index for
      the extended range.
      
      Change-Id: Ic0200dabda445fea03bf81067999cb2670e99b77
      9bac509a
    • Paul Wilkins's avatar
      Cosmetic clean up. · 54f090b1
      Paul Wilkins authored
      Clean up of vp8_kfread_modes().
      Remove unnecessary indentation and enforce line length.
      
      Change-Id: I0864d1aff55368126db01bb23efa815786b5245d
      54f090b1
    • Paul Wilkins's avatar
      Decoder segmentation bug. · 19d87e8e
      Paul Wilkins authored
      Fix decoder segmentation bug for temporal coding where the segment map
      was first initialized on a key frame.
      
      in vp8_kfread_modes() after reading the segment id it must be written to
      the  pbi->segmentation_map[] for use in temporal coding on subsequent frames.
      
      Change-Id: I1489305efc376564e734a216f69c2844646ee3d3
      19d87e8e