1. 18 Dec, 2012 1 commit
  2. 17 Dec, 2012 1 commit
  3. 13 Dec, 2012 3 commits
    • Yaowu Xu's avatar
      fixed an encoder/decoder mismatch · 2b9ec585
      Yaowu Xu authored
      The mismatch was caused by an improper merge of cleanup code around
      tokenize_b() and stuff_b() with TX32X32 experiment.
      
      Change-Id: I225ae62f015983751f017386548d9c988c30664c
      2b9ec585
    • Deb Mukherjee's avatar
      Build fixes with teh super blcoks and 32x32 expts · 7fa3deb1
      Deb Mukherjee authored
      Change-Id: I3c751f8d57ac7d3b754476dc6ce144d162534e6d
      7fa3deb1
    • Ronald S. Bultje's avatar
      New default coefficient/band probabilities. · 5a5df19d
      Ronald S. Bultje authored
      Gives 0.5-0.6% improvement on derf and stdhd, and 1.1% on hd. The
      old tables basically derive from times that we had only 4x4 or
      only 4x4 and 8x8 DCTs.
      
      Note that some values are filled with 128, because e.g. ADST ever
      only occurs as Y-with-DC, as does 32x32; 16x16 ever only occurs
      as Y-with-DC or as UV (as complement of 32x32 Y); and 8x8 Y2 ever
      only has 4 coefficients max. If preferred, I can add values of
      other tables in their place (e.g. use 4x4 2nd order high-frequency
      probabilities for 8x8 2nd order), so that they make at least some
      sense if we ever implement a larger 2nd order transform for the
      8x8 DCT (etc.), please let me know
      
      Change-Id: I917db356f2aff8865f528eb873c56ef43aa5ce22
      5a5df19d
  4. 12 Dec, 2012 1 commit
    • Ronald S. Bultje's avatar
      Consistently use get_prob(), clip_prob() and newly added clip_pixel(). · 4d0ec7aa
      Ronald S. Bultje authored
      Add a function clip_pixel() to clip a pixel value to the [0,255] range
      of allowed values, and use this where-ever appropriate (e.g. prediction,
      reconstruction). Likewise, consistently use the recently added function
      clip_prob(), which calculates a binary probability in the [1,255] range.
      If possible, try to use get_prob() or its sister get_binary_prob() to
      calculate binary probabilities, for consistency.
      
      Since in some places, this means that binary probability calculations
      are changed (we use {255,256}*count0/(total) in a range of places,
      and all of these are now changed to use 256*count0+(total>>1)/total),
      this changes the encoding result, so this patch warrants some extensive
      testing.
      
      Change-Id: Ibeeff8d886496839b8e0c0ace9ccc552351f7628
      4d0ec7aa
  5. 11 Dec, 2012 1 commit
  6. 08 Dec, 2012 2 commits
    • Yaowu Xu's avatar
      experiment with CONTEXT conversion · ab480ced
      Yaowu Xu authored
      This commit changed the ENTROPY_CONTEXT conversion between MBs that
      have different transform sizes.
      
      In additioin, this commit also did a number of cleanup/bug fix:
      1. removed duplicate function vp9_fix_contexts() and changed to use
      vp8_reset_mb_token_contexts() for both encoder and decoder
      2. fixed a bug in stuff_mb_16x16 where wrong context was used for
      the UV.
      3. changed reset all context to 0 if a MB is skipped to simplify the
      logic.
      
      Change-Id: I7bc57a5fb6dbf1f85eac1543daaeb3a61633275c
      ab480ced
    • Ronald S. Bultje's avatar
      Introduce vp9_coeff_probs/counts/stats/accum types. · 885cf816
      Ronald S. Bultje authored
      Use these, instead of the 4/5-dimensional arrays, to hold statistics,
      counts, accumulations and probabilities for coefficient tokens. This
      commit also re-allows ENTROPY_STATS to compile.
      
      Change-Id: If441ffac936f52a3af91d8f2922ea8a0ceabdaa5
      885cf816
  7. 07 Dec, 2012 1 commit
    • Ronald S. Bultje's avatar
      32x32 transform for superblocks. · c456b35f
      Ronald S. Bultje authored
      This adds Debargha's DCT/DWT hybrid and a regular 32x32 DCT, and adds
      code all over the place to wrap that in the bitstream/encoder/decoder/RD.
      
      Some implementation notes (these probably need careful review):
      - token range is extended by 1 bit, since the value range out of this
        transform is [-16384,16383].
      - the coefficients coming out of the FDCT are manually scaled back by
        1 bit, or else they won't fit in int16_t (they are 17 bits). Because
        of this, the RD error scoring does not right-shift the MSE score by
        two (unlike for 4x4/8x8/16x16).
      - to compensate for this loss in precision, the quantizer is halved
        also. This is currently a little hacky.
      - FDCT and IDCT is double-only right now. Needs a fixed-point impl.
      - There are no default probabilities for the 32x32 transform yet; I'm
        simply using the 16x16 luma ones. A future commit will add newly
        generated probabilities for all transforms.
      - No ADST version. I don't think we'll add one for this level; if an
        ADST is desired, transform-size selection can scale back to 16x16
        or lower, and use an ADST at that level.
      
      Additional notes specific to Debargha's DWT/DCT hybrid:
      - coefficient scale is different for the top/left 16x16 (DCT-over-DWT)
        block than for the rest (DWT pixel differences) of the block. Therefore,
        RD error scoring isn't easily scalable between coefficient and pixel
        domain. Thus, unfortunately, we need to compute the RD distortion in
        the pixel domain until we figure out how to scale these appropriately.
      
      Change-Id: I00386f20f35d7fabb19aba94c8162f8aee64ef2b
      c456b35f
  8. 29 Nov, 2012 2 commits
    • Yaowu Xu's avatar
      minor fix to eob check for setting CONTEXT · 7ab1d3e4
      Yaowu Xu authored
      Previously, the "!=" check is logically incorrect when eob is at 0 and
      effective coefficient starting position is 1. This commit should have
      no effect on bitstream.
      
      Change-Id: I6ce3a847c7e72bfbe4f7c74f88e3310c6b9b6d30
      7ab1d3e4
    • Deb Mukherjee's avatar
      Fixing 8x8/4x4 ADST for intra modes with tx select · 0742b1e4
      Deb Mukherjee authored
      This patch allows use of 8x8 and 4x4 ADST correctly for Intra
      16x16 modes and Intra 8x8 modes when the block size selected
      is smaller than the prediction mode. Also includes some cleanups
      and refactoring.
      
      Rebase.
      
      Change-Id: Ie3257bdf07bdb9c6e9476915e3a80183c8fa005a
      0742b1e4
  9. 28 Nov, 2012 2 commits
  10. 27 Nov, 2012 1 commit
    • John Koleszar's avatar
      Add vp9_ prefix to all vp9 files · fcccbcbb
      John Koleszar authored
      Support for gyp which doesn't support multiple objects in the same
      static library having the same basename.
      
      Change-Id: Ib947eefbaf68f8b177a796d23f875ccdfa6bc9dc
      fcccbcbb
  11. 02 Nov, 2012 1 commit
  12. 01 Nov, 2012 2 commits
  13. 31 Oct, 2012 4 commits
  14. 30 Oct, 2012 2 commits
  15. 29 Oct, 2012 1 commit
    • Paul Wilkins's avatar
      Name space clean up. · a99a2c36
      Paul Wilkins authored
      Preparation for project restructuring.
      Added vp9_ prefix on some function names that have global scope.
      Added static declaration on some that dont.
      
      Change-Id: If072f78b4300e8c17cfeed82c5d17b59946dcc5e
      a99a2c36
  16. 25 Oct, 2012 1 commit
  17. 24 Oct, 2012 1 commit
  18. 22 Oct, 2012 3 commits
  19. 19 Oct, 2012 1 commit
    • Deb Mukherjee's avatar
      Some cleanups and fixes. · f3208f36
      Deb Mukherjee authored
      Separates the logic on transform type selection previously spread out
      over a number of files into a separate function. Currently the tx_type
      field in b_mode_info is not used, but still left in there to eventually
      use for signaling the transform type in the bitstream.
      
      Also, now for tx_type = DCT_DCT, the regular integer DCT is used, as
      opposed to the floating point DCT used in conjuction with hybrid
      transform.
      
      Results change somewhat due to the transform change, but are within
      reasonable limits. The hd/std-hd sets are slightly up, while derf/yt
      are slightly down.
      
      Change-Id: I5776840c2239ca2da31ca6cfd7fd1148dc5f9e0f
      f3208f36
  20. 15 Oct, 2012 3 commits
    • Ronald S. Bultje's avatar
      Add a new token stuffing function vp8_stuff_mb(). · e7881462
      Ronald S. Bultje authored
      This way a caller doesn't need to implement the logic for which (and how
      many) tokens to write out to stuff one macroblock worth of EOBs. Make
      the actual function implementations static, since they are now only used
      in tokenize.c; also do some minor stylistic changes so it follows the
      style guide a little more closely; use PLANE_TYPE where appropriate,
      remove old (stale) frame_type function arguments; hardcode plane type
      where only a single one is possible (2nd order DC or U/V EOB stuffing);
      support stuffing 8x8/4x4 transform EOBs with no 2nd order DC.
      
      Change-Id: Ia448e251d19a4e3182eddeb9edd034bd7dc16fa3
      e7881462
    • Ronald S. Bultje's avatar
      Add and consistently use PLANE_TYPE. · 41e3a9ef
      Ronald S. Bultje authored
      Change the macros PLANE_TYPE_{Y_NO_DC,Y2,UV,Y_WITH_DC} to a typed enum,
      and use this typed enum consistently across all places where relevant.
      In places where the type is implied (e.g. in functions that only handle
      second order planes or chroma planes), remove it as a function argument
      and instead hardcode the proper enum in the code directly.
      
      Change-Id: I93652b4a36aa43163d49c732b0bf5c4442738c47
      41e3a9ef
    • Ronald S. Bultje's avatar
      Merge duplicate loops in tokenization code. · 5cfff7ce
      Ronald S. Bultje authored
      Also merge the three occurrences of 4x4 chroma block writing into a
      single function, and call that function instead of duplicating the
      4x4 chroma tokenization code in 3 places.
      
      Change-Id: I7913538d1029f709b0e3ae49fff1148d3be9eeb9
      5cfff7ce
  21. 14 Oct, 2012 1 commit
  22. 11 Oct, 2012 1 commit
  23. 05 Oct, 2012 1 commit
  24. 27 Sep, 2012 1 commit
    • Deb Mukherjee's avatar
      Entropy coding for hybrid transform · 3f5d60b3
      Deb Mukherjee authored
      Separates the entropy coding context models for 4x4, 8x8 and 16x16
      ADST variants.
      
      There is a small improvement for HD (hd/std-hd) by about 0.1-0.2%.
      Results on derf/yt are about the same, probably because there is not
      enough statistics.
      
      Results may improve somewhat once the initial probability tables are
      updated for the hybrid transforms which is coming soon.
      
      Change-Id: Ic7c0c62dacc68ef551054fdb575be8b8507d32a8
      3f5d60b3
  25. 21 Sep, 2012 1 commit
    • Deb Mukherjee's avatar
      Separating 8x8DCT use from hybridtransform8x8 · 70e21afb
      Deb Mukherjee authored
      With this change, even if hybridtransform8x8 experiment is off,
      8x8 dct is used for the I8x8 mode. However note that the gains
      observed with the hybridtransform8x8 experiment will now be less,
      since part of the gain is now merged in.
      
      Change-Id: I9afb3880906fd0a1368a374041fc08efcf060c54
      70e21afb
  26. 12 Sep, 2012 1 commit