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  1. 10 Jan, 2018 15 commits
    • Andrey Norkin's avatar
      CICP colorspace signaling · 9e69463f
      Andrey Norkin authored 
      Change-Id: I0f0cdf479091c308594a0288a0546dbdb76e4450
      9e69463f
    • Sebastien Alaiwan's avatar
      Clamp inverse transform coefficients · 80b437ce
      Sebastien Alaiwan authored 
      When --enable-coefficient-range-checking isn't specified,
clamp the coefficient at each stage.

The decoder behaviour is unchanged for valid existing AV1 streams.
However, some AV1 bitstreams that would have been rejected by the
decoder as illegal (range check failure) are now legal bitstreams.

There is no impact on video quality for valid bitstreams,
only bitstreams that would have been considered invalid are affected,
and are now considered as valid ones.

BUG=aomedia:30

Change-Id: Ie72ceeb3cb0561e8d3259767b209a4ef3be90438
      80b437ce
    • Yaowu Xu's avatar
      Disable an obsolete test when OBU is enabled · 3fcce0bb
      Yaowu Xu authored 
      The OBU experiment has removed the parsing of super frame indices, so
the test is obsolete when OBU is enabled.

BUG=aomedia:1213

Change-Id: If7d1873f3f41fa9146f9451687eda92b39b035a5
      3fcce0bb
    • Sarah Parker's avatar
      Remove variable widths for bins 1 and 2 in new-quant · 54127da3
      Sarah Parker authored 
      This is the first phase of a new-quant cleanup. We are now only
using a variable width zero bin, so we can simplify the
implementation.

Change-Id: I4da6c663a9d40b4fd08c14818cf7d7fe9b75844c
      54127da3
    • Michelle Findlay-Olynyk's avatar
      hash_based_trellis speed feature · fbab0621
      Michelle Findlay-Olynyk authored 
      Add speed feature that uses hash tables to
reuse previously found optimized coefficients
in av1_optimize_txb. This skips some expensive
optimize_txb calls.

Currently shows no significant quality
degredation or speed improvement, and set to off
by default. Requires hash_me, lv_map and
lv_map_multi. Adding to speed features required
changing AV1_COMMON *cm to AV1_COMP *cpi in a
chain of functions.

Variations that have been tried:
-varying the maximum eob on which the feature
activates: 16, 32, 64. 16 currently used. 64
has best hit rate but longer execution time.
-varying the data hashed and the length of hashes
(first hash is 16 bit and based on context data,
while second hash is 16 bit and based only on
pre-optimized qcoeff values.)
-softening the data used for the hashes: ideally
this would raise the number of hits, without
compromising quality too much.

Change-Id: I94f22be82f3a46637c0489d512f2e334a307575f
      fbab0621
    • Cheng Chen's avatar
      Skip unnecessary computation in trellis · 37d88736
      Cheng Chen authored 
      When current coeff is found to be set as eob, nz_rd is not needed
in the computation of rdcost. Skip it.

Similarly, when has_nz_tail >= 2, computation for nz_rd should be
skipped.

Local runs show ~3% speed up.

Change-Id: I176abf1d1043cab40788934b70558b816af72732
      37d88736
    • Hui Su's avatar
      Move sum_intra_stats into update_stats() · ea7320e1
      Hui Su authored 
      Change-Id: Ied3252c3075e84252d8268a13d3f50066b3418e1
      ea7320e1
    • Hui Su's avatar
      intrabc: correctly store blk_skip[] · 29bd5895
      Hui Su authored 
      BUG=aomedia:1203

Change-Id: I03ca925734535c31a1ed6bdeb7f29b5b5d5f476c
      29bd5895
    • Sebastien Alaiwan's avatar
      Prevent warp if global_motion_params are invalid · 742f646f
      Sebastien Alaiwan authored 
      BUG=aomedia:1195

Change-Id: Ib643ed9d3a23b83e91d908940f5777f6d13b8b19
      742f646f
    • Jingning Han's avatar
      Check error resilient flag for use_ref_frame_mvs · 2830fd9f
      Jingning Han authored 
      BUG=aomedia:1209

Change-Id: If4ba99d6784c55768af57cac2b197db62ea2317e
      2830fd9f
    • Sebastien Alaiwan's avatar
      warped_motion.c: use 'clamp' function · 7ed89449
      Sebastien Alaiwan authored 
      Change-Id: I31a6a66753e1e06a26ad798415c5994920bf22b7
      7ed89449
    • Hui Su's avatar
      Terminate decoding at corrupted frame data · b4d6b1c1
      Hui Su authored 
      BUG=aomedia:1154

Change-Id: I0c856564dc1eadd9e22be4de6fca5c2b0344dcb5
      b4d6b1c1
    • Urvang Joshi's avatar
      joint_motion_search: Make assumption explicit. · 48d3e633
      Urvang Joshi authored 
      Use assert to test the assumption noted in the comment.

Ran some encodes with varying per-frame resolutions (using
SUPERRES_RANDOM and RESIZE_RANDOM modes) to ensure that these
asserts are indeed valid.

Change-Id: I30021fff05f9793f80e42c5319bed02b0ae04cbd
      48d3e633
    • Tom Finegan's avatar
      Add LEB128 encode/decode/tests. · 10fea49b
      Tom Finegan authored 
      BUG=aomedia:1125

Change-Id: I383c752cdd010001e8226ca510097ef693e486bb
      10fea49b
    • Jingning Han's avatar
      Fix 8X32 iscan table · 696a7c80
      Jingning Han authored 
      Add the last scan position in the 8x32 iscan table. This point
would cause the encoder to ignore the last non-zero coefficient
at scan index 255, hence causing enc/dec mismatch. This commit
fixes and solves this issue.

BUG=aomedia:1193

Change-Id: Ia41ba31ef8549f8809cea3d76ecd91da77e130cf
      696a7c80
  3. 09 Jan, 2018 14 commits
  5. 08 Jan, 2018 11 commits