1. 10 May, 2013 1 commit
    • John Koleszar's avatar
      Subsampling aware allocs and bitstream · da58436f
      John Koleszar authored
      Make framebuffer allocations according to the chroma subsamping
      factors in use. A bit is placed in the raw part of the frame header for
      each of the two subsampling factors. This will be moved in a future
      commit to make them part of the TBD feature set bits, probably only set
      on keyframes, etc.
      
      Change-Id: I59ed38d3a3c0d4af3c7c277617de28d04a001853
      da58436f
  2. 14 Mar, 2013 1 commit
    • John Koleszar's avatar
      Fix pulsing issue with scaling · 9b7be888
      John Koleszar authored
      Updates the YV12_BUFFER_CONFIG structure to be crop-aware. The
      exiting width/height parameters are left unchanged, storing the
      width and height algined to a 16 byte boundary. The cropped
      dimensions are added as new fields.
      
      This fixes a nasty visual pulse when switching between scaled and
      unscaled frame dimensions due to a mismatch between the scaling
      ratio and the 16-byte aligned sizes.
      
      Change-Id: Id4a3f6aea6b9b9ae38bdfa1b87b7eb2cfcdd57b6
      9b7be888
  3. 12 Mar, 2013 1 commit
    • Dmitry Kovalev's avatar
      Code cleanup. · 2891d70b
      Dmitry Kovalev authored
      Removing redundant code, introducing new functions for better
      decomposition, adding 'clamp' function to vp9_common.h.
      
      Change-Id: Ic3b8ca13bbc38f60f0c9c43910b5802005e31aaf
      2891d70b
  4. 18 Jan, 2013 1 commit
  5. 28 Nov, 2012 1 commit
  6. 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
  7. 06 Nov, 2012 1 commit
    • Yaowu Xu's avatar
      silent a lot of MSVC compiler warnings · 8a336b0d
      Yaowu Xu authored
      there are still a couple type of warning left, which are related to
      double constants assigned to float type. As those would be addressed
      by the conversion of transforms into integer version. This commit
      has left those un-dealt with.
      
      Change-Id: I48fd9b489c0c27ad6b543f4177423419f929f2bb
      8a336b0d
  8. 02 Nov, 2012 1 commit
    • John Koleszar's avatar
      vpx_scale: sync from master · 06f3e51d
      John Koleszar authored
      Update vpx_scale from current code in master, run style transform, fix
      lint warnings.
      
      Change-Id: I47eadeb5b6881d448ea3728537f9b8a5b5aac78e
      06f3e51d
  9. 01 Nov, 2012 1 commit
  10. 31 Oct, 2012 2 commits
  11. 17 Jul, 2012 1 commit
  12. 11 Jun, 2012 1 commit
    • John Koleszar's avatar
      Fix pedantic compiler warnings · 0164a1cc
      John Koleszar authored
      Allows building the library with the gcc -pedantic option, for improved
      portabilty. In particular, this commit removes usage of C99/C++ style
      single-line comments and dynamic struct initializers. This is a
      continuation of the work done in commit 97b766a4, which removed most
      of these warnings for decode only builds.
      
      Change-Id: Id453d9c1d9f44cc0381b10c3869fabb0184d5966
      0164a1cc
  13. 16 Mar, 2012 1 commit
    • Yunqing Wang's avatar
      Add motion search skipping in first pass · 6a819ce4
      Yunqing Wang authored
      This change added a motion search skipping mechanism similar
      to what we did in second pass. For a macroblock that is very
      similar to the macroblock at same location on last frame,
      we can set its mv to be zero, and skip motion search. This
      improves first-pass performance for slide shows and video
      conferencing clips with a slight PSNR loss.
      
      Change-Id: Ic73f9ef5604270ddd6d433170091d20361dfe229
      6a819ce4
  14. 15 Mar, 2012 1 commit
    • Yaowu Xu's avatar
      WebM Experimental Codec Branch Snapshot · 6035da54
      Yaowu Xu authored
      This is a code snapshot of experimental work currently ongoing for a
      next-generation codec.
      
      The codebase has been cut down considerably from the libvpx baseline.
      For example, we are currently only supporting VBR 2-pass rate control
      and have removed most of the code relating to coding speed, threading,
      error resilience, partitions and various other features.  This is in
      part to make the codebase easier to work on and experiment with, but
      also because we want to have an open discussion about how the bitstream
      will be structured and partitioned and not have that conversation
      constrained by past work.
      
      Our basic working pattern has been to initially encapsulate experiments
      using configure options linked to #IF CONFIG_XXX statements in the
      code. Once experiments have matured and we are reasonably happy that
      they give benefit and can be merged without breaking other experiments,
      we remove the conditional compile statements and merge them in.
      
      Current changes include:
      * Temporal coding experiment for segments (though still only 4 max, it
        will likely be increased).
      * Segment feature experiment - to allow various bits of information to
        be coded at the segment level. Features tested so far include mode
        and reference frame information, limiting end of block offset and
        transform size, alongside Q and loop filter parameters, but this set
        is very fluid.
      * Support for 8x8 transform - 8x8 dct with 2nd order 2x2 haar is used
        in MBs using 16x16 prediction modes within inter frames.
      * Compound prediction (combination of signals from existing predictors
        to create a new predictor).
      * 8 tap interpolation filters and 1/8th pel motion vectors.
      * Loop filter modifications.
      * Various entropy modifications and changes to how entropy contexts and
        updates are handled.
      * Extended quantizer range matched to transform precision improvements.
      
      There are also ongoing further experiments that we hope to merge in the
      near future: For example, coding of motion and other aspects of the
      prediction signal to better support larger image formats, use of larger
      block sizes (e.g. 32x32 and up) and lossless non-transform based coding
      options (especially for key frames). It is our hope that we will be
      able to make regular updates and we will warmly welcome community
      contributions.
      
      Please be warned that, at this stage, the codebase is currently slower
      than VP8 stable branch as most new code has not been optimized, and
      even the 'C' has been deliberately written to be simple and obvious,
      not fast.
      
      The following graphs have the initial test results, numbers in the
      tables measure the compression improvement in terms of percentage. The
      build has  the following optional experiments configured:
      --enable-experimental --enable-enhanced_interp --enable-uvintra
      --enable-high_precision_mv --enable-sixteenth_subpel_uv
      
      CIF Size clips:
      http://getwebm.org/tmp/cif/
      HD size clips:
      http://getwebm.org/tmp/hd/
      (stable_20120309 represents encoding results of WebM master branch
      build as of commit#7a159071)
      
      They were encoded using the following encode parameters:
      --good --cpu-used=0 -t 0 --lag-in-frames=25 --min-q=0 --max-q=63
      --end-usage=0 --auto-alt-ref=1 -p 2 --pass=2 --kf-max-dist=9999
      --kf-min-dist=0 --drop-frame=0 --static-thresh=0 --bias-pct=50
      --minsection-pct=0 --maxsection-pct=800 --sharpness=0
      --arnr-maxframes=7 --arnr-strength=3(for HD,6 for CIF)
      --arnr-type=3
      
      Change-Id: I5c62ed09cfff5815a2bb34e7820d6a810c23183c
      6035da54
  15. 14 Feb, 2012 1 commit
  16. 21 Dec, 2011 1 commit
  17. 19 Aug, 2011 1 commit
    • Alpha Lam's avatar
      Copy less when active map is in use · 4e8d35a4
      Alpha Lam authored
      When active map is specified and the current frame is not a key frame,
      golden frame nor a altref frame then copy only those active regions.
      
      This significantly reduces encoding time by as much as 19% on the test
      system where realtime encoding is used. This is particularly useful
      when the frame size is large (e.g. 2560x1600) and there's only a few
      action macroblocks.
      
      Change-Id: If394a813ec2df5a0201745d1348dbde4278f7ad4
      4e8d35a4
  18. 20 Jul, 2011 1 commit
    • Timothy B. Terriberry's avatar
      Increase chrow row alignment to 16 bytes. · 7d1b37cd
      Timothy B. Terriberry authored
      This is done by expanding luma row to 32-byte alignment, since
       there is currently a bunch of code that assumes that
       uv_stride == y_stride/2 (see, for example, vp8/common/postproc.c,
       common/reconinter.c, common/arm/neon/recon16x16mb_neon.asm,
       encoder/temporal_filter.c, and possibly others; I haven't done a
       full audit).
      It also uses replaces the hardcoded border of 16 in a number of
       encoder buffers with VP8BORDERINPIXELS (currently 32), as the
       chroma rows start at an offset of border/2.
      Together, these two changes have the nice advantage that simply
       dumping the frame memory as a contiguous blob produces a valid,
       if padded, image.
      
      Change-Id: Iaf5ea722ae5c82d5daa50f6e2dade9de753f1003
      7d1b37cd
  19. 13 Apr, 2011 1 commit
    • John Koleszar's avatar
      Refactor lookahead ring buffer · 88841f10
      John Koleszar authored
      This patch cleans up the source buffer storage and copy mechanism to
      allow access through a standard push/pop/peek interface. This approach
      also avoids an extra copy in the case where the source is not a
      multiple of 16, fixing issue #102.
      
      Change-Id: I05808c39f5743625cb4c7af54cc841b9b10fdbd9
      88841f10