1. 02 Aug, 2012 3 commits
    • Ronald S. Bultje's avatar
      A few more conversions from 32-bit to 64-bit RD calculations. · d15b07d8
      Ronald S. Bultje authored
      Change-Id: Ida01bb8f4b35fde24b0f096329d326833f1fdc7e
      d15b07d8
    • Ronald S. Bultje's avatar
      Make RDCOST() results 64-bit. · a4ad3809
      Ronald S. Bultje authored
      This prevents various integer overflows that several of us have been
      seeing in the past few days.
      
      Change-Id: If0020613a608e13d311b7838796c7ad53cb97255
      a4ad3809
    • Jingning Han's avatar
      Use 8x8 DCT transform for I8X8 prediction mode · c7846ebc
      Jingning Han authored
      Apply 2D-DCT transform of dimension 8x8 to encode prediction
      residuals of I8X8 mode.
      Brought back block type 3 probability context model for 8x8 tokens,
      which is used for the coefficients of Y blocks in I8x8 modes. The
      coefficient costs estimate of I8X8 mode in rate-distortion is also
      changed appropriately.
      Performance results:
      derf:   0.246
      yt:     0.114
      std-hd: 0.730
      hd:     0.670
      
      Change-Id: If1d970eeb4e1827c9f0d2c5b27d33089b347ea27
      c7846ebc
  2. 31 Jul, 2012 1 commit
  3. 30 Jul, 2012 1 commit
    • Deb Mukherjee's avatar
      Adds support for switchable interpolation filters. · 52597441
      Deb Mukherjee authored
      Allows for swtiching/setting interpolation filters at the MB
      level. A frame level flag indicates whether to use a specifc
      filter for the entire frame or to signal the interpolation
      filter for each MB. When switchable filters are used, the
      encoder chooses between 8-tap and 8-tap sharp filters. The
      code currently has options to explore other variations as well,
      which will be cleaned up subsequently.
      
      One issue with the framework is that encoding is slow. I
      tried to do some tricks to speed things up but it is still slow.
      Decoding speed should not be affected since the number of
      filter taps remain unchanged.
      
      With the current version, we are up 0.5% on derf on average but
      some videos city/mobile improve by close to 4 and 2% respectively.
      If we did a full-search by turning the SEARCH_BEST_FILTER flag
      on, the results are somewhat better.
      
      The framework can be combined with filtered prediction, and I
      seek feedback regarding that.
      
      Rebased.
      
      Change-Id: I8f632cb2c111e76284140a2bd480945d6d42b77a
      52597441
  4. 27 Jul, 2012 3 commits
  5. 26 Jul, 2012 1 commit
  6. 25 Jul, 2012 2 commits
  7. 24 Jul, 2012 5 commits
  8. 23 Jul, 2012 2 commits
  9. 19 Jul, 2012 2 commits
    • Yaowu Xu's avatar
      fixed a compiling issue · 6f685683
      Yaowu Xu authored
      Change-Id: I9ccbea76eaeb81ce7b833dd92216734725796e84
      6f685683
    • Jingning Han's avatar
      Adds hybrid transform · 9824230f
      Jingning Han authored
      Adds ADST/DCT hybrid transform coding for Intra4x4 mode.
      The ADST is applied to directions in which the boundary
      pixels are used for prediction, while DCT applied to
      directions without corresponding boundary prediction.
      
      Adds enum TX_TYPE in b_mode_infor to indicate the transform
      type used.
      
      Make coding style consistent with google style.
      Fixed the commented issues.
      
      Experimental results in terms of bit-rate reduction:
      derf:   0.731%
      yt:     0.982%
      std-hd: 0.459%
      hd:     0.725%
      
      Will be looking at 8x8 transforms next.
      
      Change-Id: I46dbd7b80dbb3e8856e9c34fbc58cb3764a12fcf
      9824230f
  10. 18 Jul, 2012 5 commits
  11. 17 Jul, 2012 4 commits
  12. 16 Jul, 2012 5 commits
  13. 12 Jul, 2012 2 commits
  14. 09 Jul, 2012 1 commit
    • Yaowu Xu's avatar
      change to enable encoder to clamp UV motion vector · a81baae7
      Yaowu Xu authored
      This is to avoid a rare encoder/decoder mismatch for MB using SPLITMV
      mode. In decoder, the UV mv can be determined to need clamp, but the
      flag is never set in encoder motion vector selection process, and the
      clamp is not done in encoding in encoder.
      
      Change-Id: I60520d3f790354c7855dadf03f0978ea9b77e2c0
      a81baae7
  15. 30 Jun, 2012 1 commit
  16. 29 Jun, 2012 2 commits