Scott LaVarnway [Wed, 15 May 2013 17:16:02 +0000 (13:16 -0400)]
WIP: 16x16 idct/recon merge
This patch eliminates the intermediate diff buffer usage by
combining the short idct and the add residual into one function.
The encoder can use the same code as well.
Scott LaVarnway [Tue, 14 May 2013 15:58:13 +0000 (11:58 -0400)]
WIP: 32x32 idct/recon merge
This patch eliminates the intermediate diff buffer usage by
combining the short idct and the add residual into one function.
The encoder can use the same code as well.
Jingning Han [Sat, 11 May 2013 00:06:37 +0000 (17:06 -0700)]
Enable recursive partition down to 4x4
This commit allows the rate-distortion optimization recursion
at encoder to go down to 4x4 block size. It deprecates the use
of I4X4_PRED and SPLITMV syntax elements from bit-stream
writing/reading. Will remove the unused probability models in
the next patch.
The partition type search and bit-stream are now capable of
supporting the rectangular partition of 8x8 block, i.e., 8x4
and 4x8. Need to revise the rate-distortion parts to get these
two partition tested in the rd loop.
Yunqing Wang [Sat, 11 May 2013 01:46:43 +0000 (18:46 -0700)]
Do joint motion search iteratively
Allow motion search multiple times iteratively, and break out
the loop if this search couldn't find better motion vectors.
Limit the maximum number of search to 2.
Tests results:
1. stdhd set: 0.311%(overall psnr); 0.346%(ssim).
positive gain on 10 out of 16 clips(best: 2.746% on sunflower;
worst: -0.434% on old_town_cross).
2. derf set: 0.016%(overall psnr); 0.062%(ssim).
positive gain on half of the clips(best: 0.499% on bowing;
worst: -0.387 on city).
Jingning Han [Sat, 11 May 2013 20:33:13 +0000 (13:33 -0700)]
Force bsize for UV in I4X4 and SPLITMV
Use 4x4 block coding for UV components arbitrarily in I4X4_PRED and
SPLITMV coding modes. This is a temporary solution to enable
bit-stream support for recursive partition down to 4x4 block size.
Will separate the functionalities of 4x4 block coding rate-distortion
out from those of superblocks.
Yunqing Wang [Tue, 7 May 2013 16:45:28 +0000 (09:45 -0700)]
Add joint motion search in comp_inter_inter mode(experiment)
In current code, motion vectors got from single prediction mode are used
in compound prediction mode directly. These motion vectors may not give
accurate prediction since they are searched independently. In this patch,
we took Pascal's suggestion, and did joint motion search in compound
prediction mode to find better motion vectors in this situation.
Test results:
Overall PSNR: 0.570%(derf), 0.918%(stdhd);
SSIM: 0.572%(derf), 1.009%(stdhd);
The encoder is a little slower. This can be improved since some c
code is used in motion search.
Jingning Han [Wed, 8 May 2013 21:24:43 +0000 (14:24 -0700)]
Enable recursive partition type search
This commit enables the search for the optimal superblock
partition types in the recursion form. The intention is to
make the optimization process more concise and ready to
support partition down to 4x4 block size next.
John Koleszar [Wed, 8 May 2013 23:14:14 +0000 (16:14 -0700)]
Fix non-4:2:0 chroma MV calculation for SPLITMV
The previous code was somewhat vestigial for 16x16 MI units, but was
incorrect when called with chroma blocks larger than 4x4 because the
block index caused a reference to a non-existent BMI. This patch uses
the same MV for all chroma subblocks in SPLITMV mode, which is
suboptimal for non-4:2:0 subsamplings, but as SPLITMV may be removed
in the near future, will use this as a stop gap.
John Koleszar [Mon, 6 May 2013 22:52:06 +0000 (15:52 -0700)]
Subsampling aware allocs and bitstream
Make framebuffer allocations according to the chroma subsamping
factors in use. A bit is placed in the raw part of the frame header for
each of the two subsampling factors. This will be moved in a future
commit to make them part of the TBD feature set bits, probably only set
on keyframes, etc.
John Koleszar [Thu, 9 May 2013 17:40:59 +0000 (10:40 -0700)]
Make firstpass encode Y-only
The chroma planes are not used during the first pass encode,
but the vp9_encode_sb() function was operating on them anyway.
This was causing the use of uninitialized memory.
Jingning Han [Tue, 7 May 2013 22:36:30 +0000 (15:36 -0700)]
Extend left/above partition context to per mi(8x8)
Update and buffer left/above partition information context per 8x8
block. This allows to further enable recursive partition down to
4x4 block size, and hence deprecating I4X4_PRED and SPLITMV.
This commit also fixes a context buffer swap/restore issue in 32x32
partition type search. This gives 0.1% performance gain for derf/yt.
Will refactor the superblock partition type search into recursion
form.
John Koleszar [Tue, 7 May 2013 20:02:45 +0000 (13:02 -0700)]
Partially disable error resilience test
Disables the part of the error-resilient test that tests the
quality after dropping undroppable frames. It's not clear how
to set the threshold for this correctly at the moment.
John Koleszar [Tue, 7 May 2013 19:58:32 +0000 (12:58 -0700)]
Revert "Adjust error resilience test data rate."
This reverts commit b24735c622cefe3a03633edd69dff65d2a6ee0dd
since the adjusted threshold doesn't allow the existing tests
to pass. Will disable the failing test in a separate commit.
projects / libvpx / log