This commit makes the bit-stream syntax support fast selective tile
decoding in a large scale tile array. It reduces the computational
complexity of computing the target tile offset in the bit-stream
from quadratic to linear scale, while maintaining relatively small
stack space requirement (in the order of 1024 bytes instead of 1M
bytes). The overhead cost due to tile separation remains identical.
Change-Id: Id60c6915733d33a627f49e167c57d2534e70aa96
Now this is an on-going work on the re-work on the motion vector
references for all Inter coding modes. Currently implementation on
sub8x8 and BLOCK_8X8 is done. More work will be added along the way.
Essetial ideas include:
(1) Added new nearestmv algorithm through adaptive median search, out of
the four nearest neighbors: TOP, LEFT, TOPLEFT, and TOPRIGHT;
(2) Added new sheme for sub8x8 to obtain the mv ref candidates,
specially, mv ref candidates are obtained depending on the sub8x8 mode
of the current block as well as the sub8x8 mode of the neighboring
block;
(3) Added top right corner mv ref candidate whenever it is available;
The adding of the top right mv ref has showed potential in helping such
video clips as bridge_far_cif.
Change-Id: I573c04cd346ed7010f4ad87a6eaa6bab6e2caf9c
Adding a high bit depth version of the function loop_bilateral_filter()
and ensuring the appropriate version of this function is called when
vp9_highbitdepth is enabled.
Change-Id: I7a78029c733a9a79b3b2f39af0de0824239ad5a3
If a non-skipped block has all transform blocks with only 0 data, then
decoder infers skip flag. This affects the loopfilter. No real encoder
would do this though, so it is pointless. Also, it causes headaches in
HW implmentations as the loop filter cannot proceed until all TX blocks
in the block have been checked. There could be up to 768 of them in
64x64 4:4:4 with 4x4 transform.
Change-Id: I45a021d1f27ca7feefed2242605777e70ce7cabd
This commit allows the encoder to process tile coding per 64x64
block. The supported upper limit of tile resolution is the minimum
of frame size and 4096 in each dimension. To turn on, set
--experiment --row-tile
and compile.
It overwrite the old --tile-columns and --tile-rows configurations.
These two parameters now tell the encoder the width and height of
tile in the unit of 64x64 block. For example,
--tile-columns=1 --tile-rows=1
will make a tile contains a single 64x64 block.
Change-Id: Id515749a05cfeb9e9d008291b76bdfb720de0948
This commit allows the internal codec handle arbitrary tile size
in the unit of 64x64 pixel blocks.
Change-Id: I3ad24de392064645bebab887c94e1db957794916
Move the 2D tile info arrays as global variables. This resolves
the local function stack overflow issue due to excessively large
tile info variables. This allows the internal operation to support
up to 1024 row and column tiles.
Change-Id: I6644cc929e5d3a778a5c03a712ebfc0b8729f576
This commit allows the codec to use up to row tiles (optionally
in combination with up to 64 column tiles per row tile). The
minimum tile size is set to be 256x256 pixel block.
Change-Id: I811ca93f0c5eba41e190f6c7c0f064d1083f530f
The max and min tile number reference should be used to support
both row and column tiles. This commit renames the previous col
prefix to avoid confusion.
Change-Id: I487bea43701af946b79023597a9a9a0516480380
Runborgs results on derflr show consistent results between NEW_INTER
and the previous combination of NEWMVREF and COMPOUND_MODES.
Change-Id: Ieba239c4faa7f93bc5c05ad656a7a3b818b4fbfc
Test VP9/EndToEndTestLarge.EndtoEndPSNRTest/1 (422 stream) failed when
supertx enabled. This was because 4x8 and 8x4 blocks were not being
split into 4x4s during tokenization in the encoder. This patch
uses vp9_foreach_transformed_block() to fix this.
Change-Id: I1f1cb27474eb9e04347067f5c4aff1942bbea8d9
Fix the row tile boundary detection issues. This allows to use
more resources for parallel encoding/decoding when avaiable.
Change-Id: Ifda9f66d1d7c2567dd4e0a572a99a83f179b55f9
Besides code cleaning, this patch contains 3 fixes:
(1) Fixed the COMPOUND_MODES for the NEW_NEWMV mode;
(2) Fixed the joint search when the NEAR_FORNEWMV mode (in NEWMVREF)
is being evaluated;
(3) Fixed the WEDGE_PARTITION when the NEAR_FORNEWMV mode (in NEWMVREF)
is being evaluated.
(4) Adjusted the entropy probability value for NEAR_FORNEW mode.
On derflr turning on all 14 experiments (except for global-motion), the
average gain w.r.t. PSNR is +0.07%:
Maximum on bridge_far_cif: +1.02%
Minimum on hallmonitor_cif: -0.16%
Change-Id: I4c9c6ee24a981af7e655a629580641d9f9745f91
Use separate token probabilities and counters for non-transform
blocks (pixel domain) . Initial probabilities are trained with screen_content
clips. On screen_content, it improves coding performance by about
2% (from +16.4% to +18.45%).
The initial probabilities are not optimized for natural videos. So it should
not be used for natural videos. Set FOR_SCREEN_CONTENT as 0/1 to specify
whether or not to enable this patch.
Change-Id: Ifa361c94bb62aa4b783cbfa50de08c3fecae0984
