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. 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
  4. 15 Nov, 2012 2 commits
    • John Koleszar's avatar
      Pack invisible frames without lengths · 64bcffc1
      John Koleszar authored
      Modify the decoder to return the ending position of the bool decoder and
      use that as the starting position for the next frame.
      
      The constant-space algorithm for parsing the appended frame lengths is
      O(n^2), which is a potential DoS concern if n is unbounded. Revisit
      the appended lengths for use as partition lengths when multipartition
      support is added.
      
      In addition, this allows decoding of raw streams outside of a container
      without additional framing information, though it's insufficient to
      be able to remux said stream into a container.
      
      Change-Id: I71e801a9c3e37abe559a56a597635b0cbae1934b
      64bcffc1
    • John Koleszar's avatar
      support building vp8 and vp9 into a single lib · a9c7597a
      John Koleszar authored
      Change-Id: Ib8f8a66c9fd31e508cdc9caa662192f38433aa3d
      a9c7597a
  5. 09 Nov, 2012 1 commit
    • Vignesh Venkatasubramanian's avatar
      Packing Altref along with succeeding frame and length encoding frames · bc9670ee
      Vignesh Venkatasubramanian authored
      The altref frame is packed along with the next P frame. So that
      outside of the codec there are now only two types of frames P and I.
      Also, now it is one frame in and one frame out with respect to the
      codec. Apart from that, all the frames are length encoded with the
      length of each frame appended to the frame itself. There are
      two categories of frames and each of them will look as follows:
      
        - Packed frames (an altref along with the succeeding p frame)
          - altref_frame_data | altref_lenngth | frame_data | length
        - Unpacked frames (all frames other than the above)
          - frame_data | length
      
      Change-Id: If1eabf5c473f7d46b3f2d026bd30c803588c5330
      bc9670ee
  6. 06 Nov, 2012 2 commits
    • John Koleszar's avatar
      vpx: merge with master · 83b1d907
      John Koleszar authored
      Change-Id: I44b3ad780cef6f448fa17ff8e28fea87ef9cd518
      83b1d907
    • 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
  7. 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
  8. 01 Nov, 2012 2 commits
  9. 31 Oct, 2012 3 commits
  10. 20 Aug, 2012 1 commit
  11. 08 Aug, 2012 1 commit
  12. 26 Jul, 2012 1 commit
    • Yunqing Wang's avatar
      multi-res: add drop_frame support · 4066c8b2
      Yunqing Wang authored
      Added drop_frame support in multi-resolution encoder.
      
      If one frame is dropped at a lower-resolution level, the next
      upper-resolution level encoder needs to encode that frame
      independently without any lower-resolution level motion
      information.
      
      Another issue is that if one frame is dropped at some but not all
      resolution levels, a frame after that one may use different set
      of reference frames at different resolution levels. This reference
      frame asynchronization could degrade motion search precision in
      upper-resolution level encoding, which uses lower-resolution level
      motion result. This change compares the lower-resolution and upper-
      resolution level's reference frames. If they are not the same, the
      upper-resolution level encoder can not use lower-resolution level
      motion result.
      
      Change-Id: I61afa4f313630e75b7cbdd5742e230e8724a988a
      4066c8b2
  13. 23 Jul, 2012 1 commit
  14. 17 Jul, 2012 1 commit
  15. 14 Jul, 2012 1 commit
    • Yunqing Wang's avatar
      multi-res: add parameter validity checking · 7f009975
      Yunqing Wang authored
      Added validity checking in multi-res encoder. Disable spatial
      resampling and frame dropping before we have those supports.
      Also, deallocate the memory for all resolution levels once error
      occurs.
      
      Change-Id: Ia5d65a645381cad1a49940ab3a19bb5696c39c09
      7f009975
  16. 13 Jul, 2012 1 commit
  17. 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
  18. 15 Jun, 2012 1 commit
    • John Koleszar's avatar
      Remove threading dependencies with --disable-multithread · 8df79e9d
      John Koleszar authored
      Avoid a pthreads dependency via pthread_once() when compiled with
      --disable-multithread.
      
      In addition, this synchronization is disabled for Win32 as well, even
      though we can be sure that the required primatives exist, so that the
      requirements on the application when built with --disable-multithread
      are consistent across platforms.
      
      Users using libvpx built with --disable-multithread in a multithreaded
      context should provide their own synchronization. Updated the
      documentation to vpx_codec_enc_init_ver() and vpx_codec_dec_init_ver()
      to note this requirement. Moved the RTCD initialization call to match
      this description, as previously it didn't happen until the first
      frame.
      
      Change-Id: Id576f6bce2758362188278d3085051c218a56d4a
      8df79e9d
  19. 13 Jun, 2012 1 commit
    • James Zern's avatar
      disable lagged encoding in one-pass · 7b0b6a2c
      James Zern authored
      This currently has no effect and can create an artificial lag in e.g.,
      realtime.
      
      Change-Id: Ia1c7c6dbe7c6fe82a944f087f1b0d1dbbc0aa1b6
      7b0b6a2c
  20. 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
  21. 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
  22. 23 May, 2012 2 commits
    • John Koleszar's avatar
      Prevent external frame size changes in two-pass · 410ae576
      John Koleszar authored
      The two-pass code does not support the case where the application
      changes the frame size dynamically. Add this case to the validation
      checks in the vpx_codec_enc_config_set() path.
      
      Change-Id: Idadc42c7c3bd566ecdbce30d8dd720add097f992
      410ae576
    • Yunqing Wang's avatar
      multi-res: modify memory allocation code · ad479a9b
      Yunqing Wang authored
      Reverted part of change in memory alllocation code, which ensures
      that the function returns 0 and encoder works correctly when
      CONFIG_MULTI_RES_ENCODING isn't turned on.
      
      Change-Id: Id5d5e7f2c8bd9e961a6dca79d257e8185f0d592a
      ad479a9b
  23. 16 May, 2012 1 commit
    • Yunqing Wang's avatar
      multi-res: force Key frame sychronization · 65dd157c
      Yunqing Wang authored
      In multi-resolution encoding, frame_type decision for each frame
      is made by the lowest-resolution encoder. For all other higher-
      resolution encoders, kf_mode is always set to VPX_KF_DISABLED,
      and they are forced to use the same frame_type picked by the
      lowest-resolution encoder.
      
      Change-Id: Ic4d52ec65bbc012ca9c2d236210e28a295591eaf
      65dd157c
  24. 11 May, 2012 1 commit
  25. 08 May, 2012 1 commit
    • John Koleszar's avatar
      Use consistent range for VP8E_SET_NOISE_SENSITIVITY · c8f4c187
      John Koleszar authored
      Accept the same range of inputs for the VP8E_SET_NOISE_SENSITIVITY
      control, regardless of whether temporal denoising is enabled or not.
      This is important for maintaining compatibility with existing
      applications.
      
      Change-Id: I94cd4bb09bf7c803516701a394cf1a63bfec0097
      c8f4c187
  26. 04 May, 2012 2 commits
    • John Koleszar's avatar
      remove deprecated pre-v0.9.0 API · 2bf8fb58
      John Koleszar authored
      Remove a bunch of compatibility code dating back to before the initial
      libvpx release.
      
      Change-Id: Ie50b81e7d665955bec3d692cd6521c9583e85ca3
      2bf8fb58
    • Attila Nagy's avatar
      Make global data const · f039a85f
      Attila Nagy authored
      Removes all runtime initialization of global data. This commit is a
      squashed version of the following series cherry-picked from master.
      This is necessary because of a change that was merged to the tester
      that depends on the scaler being moved to the RTCD framework, which
      is a worthwhile thing to include in Eider anyway.
      
        - a91b42f0 Makes all global data in entropy.c const
        - b35a0db0 Makes all global data in tokenize.c const
        - 441cac8e Makes all mode token tables const
        - 5948a021 Ports vpx_xcaler to new RTCD method
        - 317d4244 Makes all mode token tables const part 2
      
      Change-Id: Ifeaea24df2b731e7c509fa6c6ef6891a374afc26
      f039a85f
  27. 03 May, 2012 1 commit
    • John Koleszar's avatar
      multi-res: restore v1.0.0 API · 25a36d6b
      John Koleszar authored
      Move the notion of 0 bitrate implying skip deeper into the codec,
      rather than doing it at the multi-encoder API level. This preserves
      v1.0.0 ABI compatibility, rather than forcing a bump to v2.0.0 over a
      minor change. Also, this allows the case where the application can
      selectively enable and disable the larger resolution(s) without having
      to reinitialize the codec instace (for instance, if no target is
      receiving the full resolution stream).
      
      It's not clear how deep to push this check. It may be valuable to
      allow the framerate adaptation code to run, for example. Currently put
      the check as early as possible for simplicity, should reevaluate this
      as this feature gains real use.
      
      Change-Id: I371709b8c6b52185a1c71a166a131ecc244582f0
      25a36d6b
  28. 20 Apr, 2012 1 commit
    • John Koleszar's avatar
      multi-res: restore v1.0.0 API · d72c536e
      John Koleszar authored
      Move the notion of 0 bitrate implying skip deeper into the codec,
      rather than doing it at the multi-encoder API level. This preserves
      v1.0.0 ABI compatibility, rather than forcing a bump to v2.0.0 over a
      minor change. Also, this allows the case where the application can
      selectively enable and disable the larger resolution(s) without having
      to reinitialize the codec instace (for instance, if no target is
      receiving the full resolution stream).
      
      It's not clear how deep to push this check. It may be valuable to
      allow the framerate adaptation code to run, for example. Currently put
      the check as early as possible for simplicity, should reevaluate this
      as this feature gains real use.
      
      Change-Id: I371709b8c6b52185a1c71a166a131ecc244582f0
      d72c536e
  29. 19 Apr, 2012 1 commit
    • Attila Nagy's avatar
      Ports vpx_xcaler to new RTCD method · 5948a021
      Attila Nagy authored
      We can get rid of all remaining global initializers now:
       vp8_scale_machine_specific_config()
       vp8_initialize()
       vp8dx_initialize()
      
      Change-Id: I2825cea5d1c01ad9f6c45df49a0f86d803bfeb69
      5948a021
  30. 11 Apr, 2012 1 commit
    • Paul Wilkins's avatar
      Refactoring of encode loop and bitstream packing · 13c6d1a8
      Paul Wilkins authored
      Some code re-factored / moved to allow the main
      pack operation inside the recode loop so  that the
      size estimate is accurate.
      
      Deletion of some redundant code relating to one pass.
      
      Aproximate improvement over March 27 code base:
      Derf 0.0%, YT 0.5%, YThd 0.3% Std_hd 0.25%
      
      Change-Id: Id2d071794ab44f0b52935f6fcdb5733d09a6bb86
      13c6d1a8
  31. 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
  32. 13 Mar, 2012 1 commit
  33. 29 Feb, 2012 1 commit
    • Attila Nagy's avatar
      Packing bitstream on-the-fly with delayed context updates · 52cf4dca
      Attila Nagy authored
      Produce the token partitions on-the-fly, while processing each MB.
      Context is updated at the beginning of each frame based on the
      previoud frame's counters. Optimally encoder outputs partitions in
      separate buffers. For frame based output, partitions are concatenated
      internally.
      
      Limitations:
          - enabled just in combination with realtime-only mode
          - number of encoding threads has to be equal or less than the
          number of token partitions. For this reason, by default the encoder
          will do 8 token partitions.
          - vpxenc supports partition output (-P) just in combination with
          IVF output format (--ivf)
      
      Performance:
          - Realtime encoder can be up to 13% faster (ARM) depending on the number
          of threads and bitrate settings. Constant gain over the 5-16 speed
          range.
          - Token buffer reduced from one frame to 8 MBs
      
      Quality:
          - quality is affected by the delayed context updates. This again
          dependents on input material, speed and bitrate settings. For VC
          style input the loss seen is up to 0.2dB. If error-resilient=2
          mode is used than the effect of this change is negligible.
      
      Example:
      ./configure --enable-realtime-only --enable-onthefly-bitpacking
      ./vpxenc --rt --end-usage=1 --fps=30000/1000 -w 640 -h 480
      --target-bitrate=1000 --token-parts=3 --static-thresh=2000
      --ivf -P -t 4 -o strm.ivf tanya_640x480.yuv
      
      Change-Id: I127295cb85b835fc287e1c0201a67e378d025d76
      52cf4dca