1. 26 Jan, 2013 1 commit
    • Deb Mukherjee's avatar
      Adding a frame parallel decoding mode · dfd89f2e
      Deb Mukherjee authored
      Adds a flag to disable features that would inhibit frame parallel
      decoding. This includes backward adaptation and MV sorting based
      on search in ref frame buffer.
      
      Also includes some minor clean-ups.
      
      Change-Id: I434846717a47b7bcb244b37ea670c5cdf776f14d
      dfd89f2e
  2. 24 Jan, 2013 1 commit
    • Deb Mukherjee's avatar
      Adds an error-resilient mode with test · 01cafaab
      Deb Mukherjee authored
      Adds an error-resilient mode where frames can be continued
      to be decoded even when there are errors (due to network losses)
      on a prior frame. Specifically, backward updates are turned off
      and probabilities of various symbols are reset to defaults at
      the beginning of each frame. Further, the last frame's mvs are
      not used for the mv reference list, and the sorting of the
      initial list based on search on previous frames is turned off
      as well.
      
      Also adds a test where an arbitrary set of frames are skipped
      from decoding to simulate errors. The test verifies (1) that if
      the error frames are droppable - i.e. frame buffer updates have
      been turned off - there are no mismatch errors for the remaining
      frames after the error frames; and (2) if the error-frames are non
      droppable, there are not only no decoding errors but the mismatch
      PSNR between the decoder's version of the post-error frames and the
      encoder's version is at least 20 dB.
      
      Change-Id: Ie6e2bcd436b1e8643270356d3a930e8989ff52a5
      01cafaab
  3. 18 Dec, 2012 1 commit
  4. 17 Dec, 2012 1 commit
  5. 30 Nov, 2012 1 commit
  6. 28 Nov, 2012 1 commit
  7. 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
  8. 01 Nov, 2012 2 commits
  9. 31 Oct, 2012 3 commits
  10. 17 Jul, 2012 1 commit
  11. 29 Jun, 2012 1 commit
    • Hui Su's avatar
      Add lossless compression mode. · e44ee38a
      Hui Su authored
      This commit adds lossless compression capability to the experimental
      branch. The lossless experiment can be enabled using --enable-lossless
      in configure. When the experiment is enabled, the encoder will use
      lossless compression mode by command line option --lossless, and the
      decoder automatically recognizes a losslessly encoded clip and decodes
      accordingly.
      
      To achieve the lossless coding, this commit has changed the following:
          1. To encode at lossless mode, encoder forces the use of unit
      quantizer, i.e, Q 0, where effective quantization is 1. Encoder also
      disables the usage of 8x8 transform and allows only 4x4 transform;
          2. At Q 0, the first order 4x4  DCT/IDCT have been switched over
      to a pair of forward and inverse Walsh-Hadamard Transform
      (http://goo.gl/EIsfy),  with proper scaling applied to match the range
      of the original 4x4 DCT/IDCT pair;
          3. At Q 0, the second order remains to use the previous
      walsh-hadamard transform pair. However, to maintain the reversibility
      in second order transform at Q 0, scaling down is applied to first
      order DC coefficients prior to forward transform, and scaling up is
      applied to the second order output prior to quantization. Symmetric
      upscaling and downscaling are added around inverse second order
      transform;
          4. At lossless mode, encoder also disables a number of minor
      features to ensure no loss is introduced, these features includes:
              a. Trellis quantization optimization
              b. Loop filtering
              c. Aggressive zero-binning, rounding and zero-bin boosting
              d. Mode based zero-bin boosting
      
      Lossless coding test was performed on all clips within the derf set,
      to verify that the commit has achieved lossless compression for all
      clips. The average compression ratio is around 2.57 to 1.
      (http://goo.gl/dEShs)
      
      Change-Id: Ia3aba7dd09df40dd590f93b9aba134defbc64e34
      e44ee38a
  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. 04 Jun, 2012 1 commit
    • Johann's avatar
      Remove extra enum · 965d8686
      Johann authored
      VP8_REFFRAME is the same as vpx_ref_frame_type
      
      Change-Id: I63c2ddfb39f6ec87d1e5eb6a8852846464552b1b
      965d8686
  14. 11 May, 2012 1 commit
  15. 02 May, 2012 3 commits
  16. 21 Mar, 2012 1 commit
  17. 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
  18. 28 Feb, 2012 1 commit
    • Paul Wilkins's avatar
      Code Simplification · b6f02c85
      Paul Wilkins authored
      Removal of code relating to token partitioning
      
      Change-Id: Iaf3c88d6758639a55bd92c3be5c51e6bed407a3c
      b6f02c85
  19. 26 Feb, 2012 1 commit
    • Paul Wilkins's avatar
      Code Cleanup. · 646e6221
      Paul Wilkins authored
      Removal of error_resilient_mode features.
      The interface has been left in place but does nothing.
      
      Change-Id: I2407863bd0d3c98407354507423ca48d29f63b17
      646e6221
  20. 25 Feb, 2012 1 commit
    • Paul Wilkins's avatar
      Removal of temporal re sampling code. · 80b873e3
      Paul Wilkins authored
      For now the interface elements have been left in place
      to make sure existing parameter files work but parameters
      relating to drop frame wont do anything.
      
      Change-Id: I579ee614726387381c546845dac4bc03c74c6a07
      80b873e3
  21. 24 Feb, 2012 2 commits
  22. 14 Jan, 2012 1 commit
    • Adrian Grange's avatar
      Fixed bugs in multi-layer code related to changing params · e479379a
      Adrian Grange authored
      When running multi-layer (ML) encodes and dynamically
      changing coding parameters on the fly (e.g. frame
      duration/rate, bandwidths allocated to each layer)
      the encoder would not produce sensible output.
      
      In certain cases the rate targeting would be
      hideously inaccurate.
      
      These fixes make it possible to change these coding
      parameters correctly and to maintain accurate control
      of the rate targeting.
      
      I also added the specification of the input timebase
      into the test program, vp8_scalable_patterns.c.
      
      Patch 2: Moved declaration to appease MS compiler)
      
      Change-Id: Ic8bb5a16daa924bb64974e740696e040d07ae363
      e479379a
  23. 22 Dec, 2011 1 commit
    • John Koleszar's avatar
      Remove legacy integer types · f56918ba
      John Koleszar authored
      Remove BOOL, INTn, UINTn, etc, in favor of C99-style fixed width
      types.
      
      Change-Id: I396636212fb5edd6b347d43cc940186d8cd1e7b5
      f56918ba
  24. 21 Dec, 2011 1 commit
    • John Koleszar's avatar
      Remove opaque pointer VP8_PTR · b0056c3b
      John Koleszar authored
      Use an opaque struct rather than typecasting through VP8_PTR, an int*.
      
      Change-Id: I5ed4d9238ba2e8d51bfa07a8da87a2eb4c8fa43a
      b0056c3b
  25. 05 Dec, 2011 1 commit
    • Yunqing Wang's avatar
      Multiple-resolution encoder · aa7335e6
      Yunqing Wang authored
      The example encoder down-samples the input video frames a number of
      times with a down-sampling factor, and then encodes and outputs
      bitstreams with different resolutions.
      
      Support arbitrary down-sampling factor, and down-sampling factor
      can be different for each encoding level.
      
      For example, the encoder can be tested as follows.
      1. Configure with multi-resolution encoding enabled:
      ../libvpx/configure --target=x86-linux-gcc --disable-codecs
      --enable-vp8 --enable-runtime_cpu_detect --enable-debug
      --disable-install-docs --enable-error-concealment
      --enable-multi-res-encoding
      2. Run make
      3. Encode:
      If input video is 1280x720, run:
      ./vp8_multi_resolution_encoder 1280 720 input.yuv 1.ivf 2.ivf 3.ivf 1
      (output: 1.ivf(1280x720); 2.ivf(640x360); 3.ivf(320x180).
      The last parameter is set to 1/0 to show/not show PSNR.)
      4. Decode:
      ./simple_decoder 1.ivf 1.yuv
      ./simple_decoder 2.ivf 2.yuv
      ./simple_decoder 3.ivf 3.yuv
      5. View video:
      mplayer 1.yuv -demuxer rawvideo -rawvideo w=1280:h=720 -loop 0 -fps 30
      mplayer 2.yuv -demuxer rawvideo -rawvideo w=640:h=360 -loop 0 -fps 30
      mplayer 3.yuv -demuxer rawvideo -rawvideo w=320:h=180 -loop 0 -fps 30
      
      The encoding parameters can be modified in vp8_multi_resolution_encoder.c,
      for example, target bitrate, frame rate...
      
      Modified API. John helped a lot with that. Thanks!
      
      Change-Id: I03be9a51167eddf94399f92d269599fb3f3d54f5
      aa7335e6
  26. 11 Nov, 2011 1 commit
    • John Koleszar's avatar
      avoid resetting framerate during vpx_codec_enc_config_set() · bdd35c13
      John Koleszar authored
      The calculated frame_rate is a state variable in the codec, and
      shouldn't be maintained in the configuration struct. Move it to the
      main part of cpi so that it isn't clobbered when the configuration
      struct is updated. The initial framerate estimate is moved from the
      vp8_cx_iface.c wrapper into the body of init_config() in onyx_if.c, so
      that it is only called once and not reset on every call to
      vp8_change_config().
      
      Change-Id: I8d9a3d1283330d1ee297d07e9d78d1f2875f2465
      bdd35c13
  27. 20 Oct, 2011 1 commit
    • James Berry's avatar
      Fix: check cx_data buffer prior to write · bc715113
      James Berry authored
      check to make sure that cx_data buffer has enough room before
      writting to it, prior behavior did not which could result in a crash.
      
      Change-Id: I3fab6f2bc4a96d7c675ea81acd39ece121738b28
      bc715113
  28. 11 Oct, 2011 1 commit
    • Adrian Grange's avatar
      Added rate-targeted temporal scalability · 217591fd
      Adrian Grange authored
      Added the ability to create rate-targeted, temporally
      scalable, VP8 compatible bitstreams.
      
      The application vp8_scalable_patterns.c demonstrates how
      to use this capability. Users can create output bitstreams
      containing upto 5 temporally separable streams encoded
      as a single VP8 bitstream.
      (previously abandoned as:
      I92d1483e887adb274d07ce9e567e4d0314881b0a)
      
      Change-Id: I156250a3fe930be57c069d508c41b6a7a4ea8d6a
      217591fd
  29. 10 Oct, 2011 1 commit
  30. 26 Jul, 2011 1 commit
  31. 21 Jul, 2011 1 commit
    • Yaowu Xu's avatar
      fix more merge issues · 8c31484e
      Yaowu Xu authored
      With this fix, the experimental branch now builds and encodes correctly
      with the following two configure options respectively:
      --enable-experimental --enable-t8x8
      --enable-experimental
      
      Change-Id: I3147c33c503fe713a85fd371e4f1a974805778bf
      8c31484e
  32. 20 Jul, 2011 1 commit
  33. 28 Jun, 2011 1 commit
    • Stefan Holmer's avatar
      Adding support for independent partitions · 4cb0ebe5
      Stefan Holmer authored
      Adding support in the encoder for generating
      independent residual partitions by forcing
      equal probabilities over the prev coef entropy
      contexts.
      
      Change-Id: I402f5c353255f3ca20eae2620af739f6a498cd21
      4cb0ebe5
  34. 25 Apr, 2011 1 commit