1. 07 Nov, 2016 1 commit
    • Yushin Cho's avatar
      New experiment: Perceptual Vector Quantization from Daala · 77bba8d3
      Yushin Cho authored
      PVQ replaces the scalar quantizer and coefficient coding with a new
      design originally developed in Daala. It currently depends on the
      Daala entropy coder although it could be adapted to work with another
      entropy coder if needed:
      ./configure --enable-experimental --enable-daala_ec --enable-pvq
      
      The version of PVQ in this commit is adapted from the following
      revision of Daala:
      https://github.com/xiph/daala/commit/fb51c1ade6a31b668a0157d89de8f0a4493162a8
      
      More information about PVQ:
      - https://people.xiph.org/~jm/daala/pvq_demo/
      - https://jmvalin.ca/papers/spie_pvq.pdf
      
      The following files are copied as-is from Daala with minimal
      adaptations, therefore we disable clang-format on those files
      to make it easier to synchronize the AV1 and Daala codebases in the future:
       av1/common/generic_code.c
       av1/common/generic_code.h
       av1/common/laplace_tables.c
       av1/common/partition.c
       av1/common/partition.h
       av1/common/pvq.c
       av1/common/pvq.h
       av1/common/state.c
       av1/common/state.h
       av1/common/zigzag.h
       av1/common/zigzag16.c
       av1/common/zigzag32.c
       av1/common/zigzag4.c
       av1/common/zigzag64.c
       av1/common/zigzag8.c
       av1/decoder/decint.h
       av1/decoder/generic_decoder.c
       av1/decoder/laplace_decoder.c
       av1/decoder/pvq_decoder.c
       av1/decoder/pvq_decoder.h
       av1/encoder/daala_compat_enc.c
       av1/encoder/encint.h
       av1/encoder/generic_encoder.c
       av1/encoder/laplace_encoder.c
       av1/encoder/pvq_encoder.c
       av1/encoder/pvq_encoder.h
      
      Known issues:
      - Lossless mode is not supported, '--lossless=1' will give the same result as
      '--end-usage=q --cq-level=1'.
      - High bit depth is not supported by PVQ.
      
      Change-Id: I1ae0d6517b87f4c1ccea944b2e12dc906979f25e
      77bba8d3
  2. 21 Oct, 2016 1 commit
    • Nathan E. Egge's avatar
      Decoder performance improvement with daala_ec. · 5357dcaf
      Nathan E. Egge authored
      Cherry-pick Daala b5020bee:
       Remove redundant test in od_ec_decode_bool_q15().
      Using a test that decodes 100M random binary symbols, making this change
       produced a speed up of 8.81% with gcc-4.9.3 and 3.71% with clang-3.7.1,
       both compiled with -O2.
      
      Change-Id: If6d0077a56121a575ae53bcd4d1d9b7d800a317d
      5357dcaf
  3. 18 Oct, 2016 1 commit
  4. 17 Oct, 2016 1 commit
    • Nathan E. Egge's avatar
      Fix warning when discarding const qualifier. · 19698a70
      Nathan E. Egge authored
      Cherry-pick Daala 211c2a41: Clean up EC tell() and tell_frac() functions.
      Add a const qualifier to the od_ec_enc and od_ec_dec parameters of
       the od_ec_enc_tell(), od_ec_enc_tell_frac(), od_ec_dec_tell(), and
       od_ec_dec_tell_frac() functions.
      Add an OD_WARN_UNUSED_RESULT to od_ec_enc_tell_frac().
      
      Change-Id: Ia50e2fd75e98d8a03d993449d658b695cf56e6fb
      19698a70
  5. 14 Oct, 2016 2 commits