Add the ability to pick between 3 quantization profiles.
The profile is chosen based on the entropy context at the
block level.
Change-Id: Iaea0485798441b7d635962c2563f3a477f582dac
This commit refactors the transform and quantization process for
sub8x8 blocks and unifies the related functions.
Change-Id: I005f61f3eb49eec44f947b906c4e308cab9935a2
Replace the expanded zero-bin quantizer with uniform quantizer in
the recursive transform block partitioning scheme. This improves
the compression performance by 0.4% for lowres.
Change-Id: I1c32ce9ebba0f0760e36a2c5bd20f2f5887ea5b4
- Apply 8-pixel vertical filtering direction parallelism.
- Add unit tests to verify bit exact.
- Encoder speed improves ~29% (enable EXT_INTERP) on Xeon E5-2680.
- Combinational cycle count of vp10_convolve() drops from 26.06%
to 6.73%.
Change-Id: Ic1ae48f8fb1909991577947a8c00d07832737e57
This fixes the unit test failure in the 1-pass settings of
EndToEndTestLarge.EndtoEndPSNRTest
bug=webm:1243
Change-Id: I7667c341f7c063f7ffb83786446bbbd1e498c1aa
Move the reference frame type definitions to common/enums.h file.
Replace hard coded numbers.
Combine repeated definitions.
Change-Id: I288e079a03e448014cc181bcdb3f88ee8ec8d139
Due to rounding used computation, HDB variance computation may produce
slightly negative values. This commit adds clamping to make sure
output variance values for 10 and 12 to be non-negative.
Change-Id: Id679aa55a4c201958c4c7d28cd8733b9246a71c8
This commit fixes the use of uninitialized context values in the
combination of supertx and var-tx.
Change-Id: I2d36badf5c9806ea402ce3e19515cc299e6b79e8
This commit refactors the reference frame structure used in the
dynamic motion vector referencing system, and makes it support
the bi-directional reference frames. This resolves unit test
failure (enc/dec mismatch) when both are turned on.
The compression performance (ref-mv + ext-refs) is improved by
0.2% for lowres.
Change-Id: I233624d8fccc1f69e82295f94de984ff056365dc
This reinstates commit efda2831e5f758b4f350679b5c55c0b9282449b0
without the tests and with fixes for 32 bit x86 builds.
Change-Id: I34be4fe1e8a67686d26ba256fd7efe0eb6a569e8
This commit adds an encoder workaround to support better
compatibility with a non-compliant hardware vp9 profile 2 decoder.
The known issue with this decoder is:
The decoder assumes a wrong value, 127 instead of the correct
value of 511 and 2047, for any assumed top-left corner pixel in
UV planes for 10 and 12 bit, respectively. Such assumed
top-left corner pixel is used for INTRA prediction when a real
decoded/reconstructed pixel is not avalable, e.g. when it is
located inside the row above the top row or inside the column
left to the leftest column of a video image.
Change-Id: Ic15a938a3107e1b85e96cb7903a5c4220986b99d
The tile boundaries should now be respected even between tile rows.
regardless of whether ext-tile is used or not.
Change-Id: I5a39fd274451114a4264215f97f12be2c908016d
