The commit changes the border pixel extension from 160 pixel each side
to what is necessary in arnr filter or motion estimation portion, i.e.
16 pixel on top and left side. For right or bottom side, the extension
is changed to either round up image size to multiple of 64 or at least
16 pixels.
Change-Id: Ic05e19b94368c1ab4df568723aae5734e6c3d2c5
The 16x16 transform unit test suggested that the peak coefficient
value can reach 32639. This could cause potential overflow issue
in the SSSE3 implmentation of 16x16 block quantization. This commit
fixes this issue by replacing addition with saturated addition.
Change-Id: I6d5bb7c5faad4a927be53292324bd2728690717e
Adds a new end-usage option for constant quality encoding in vpx. This
first version implemented for VP9, encodes all regular inter frames
using the quality specified in the --cq-level= option, while encoding
all key frames and golden/altref frames at a quality better than that.
The current performance on derfraw300 is +0.910% up from bitrate control,
but achieved without multiple recode loops per frame.
The decision for qp for each altref/golden/key frame will be improved
in subsequent patches based on better use of stats from the first pass.
Further, the qp for regular inter frames may also be varied around the
provided cq-level.
Change-Id: I6c4a2a68563679d60e0616ebcb11698578615fb3
mode_info_context was stored as a grid of MODE_INFO structs.
The grid now constists of a pointer to a MODE_INFO struct and
a "in the image" flag. The MODE_INFO structs are now stored
as a stream, eliminating unnecessary copies and is a little
more cache friendly.
For the test clips used, the decoder performance improved
by ~4.3% (1080p) and ~9.7% (720p).
Patch Set 2: Re-encoded clips with latest. Now ~1.7% (1080p)
and 5.9% (720p).
Change-Id: I846f29e88610fce2523ca697a9a9ef2a182e9256
The 32x32 forward transform can potentially reach peak coefficient
value close to 32700, while the rounding factor can go upto 610.
This could cause overflow issue in the SSSE3 implementation of 32x32
quantization process.
This commit resolves this issue by replacing the addition operations
with saturated addition operations in 32x32 block quantization.
Change-Id: Id6b98996458e16c5b6241338ca113c332bef6e70
The segment feature SEG_LVL_SKIP requires the prediction unit size
to be at least BLOCK_8X8. This commit makes the requirement to be
explicit. This is to prevent future encoder implementations from
making wrong choices.
Change-Id: I0127f0bd4c66e130b81f0cb0a8d3dbfe3b2da5c2
Moves counting of mv branches to where we have a new mv, instead of after
the whole frame is summed.
Change-Id: I945d9f6d9199ba2443fe816c92d5849340d17bbd
Speed 4 fixed partition size. Use fixed size unless it does not
fit inside image, in which case use the largest size that does.
Change-Id: I250f7a80506750dd82ab355721624a1344247223
This commit fixed the potential overflow issue in the SSE2
implementation of 32x32 forward DCT. It resolved the corrupted
coded frames in the border of scenes.
Change-Id: If87eef2d46209269f74ef27e7295b6707fbf56f9
While static-thresh is on, we only need to transmit skip
flag if skip = 1. The cost of skip bit is added to the
total rate cost.
Change-Id: I64e73e482bc297eba22907026298a15fa8cc3920
- Intermediate height was not correct i.e. when block size is 4 and
y_step_q4 is 6. In this case intermediate height was
(4*6) >> 4 = 1 and vertical interpolation needs two source pixels
plus 7 extra pixels for taps.
- Also if the current output block is 16x16 and we are using 4x upscaling
we need only 12 rows after horizontal filtering instead of 16.
Patch Set 2: Intermediate_height updated after CL 66723
"Fix bug in convolution functions (filter selection)"
Change-Id: I5a1a1bc2ac9d5edb3a6e0818de618bf318fdd589
Added some code to output normalized rd hit count stats.
In effect this approximates to the average number of rd
operations/tests per pixel for the sequence.
The results are not quite accurate and I have not bothered
to account for partial SB64s at frame edges and for key frames
However they do give some idea of the number of modes /
prediction methods being tested for each pixel across the
different partition sizes. This indicates how much scope their
is for further gains either by reducing the number of partitions
examined or the modes per partition through heuristics.
Patch 3 moved place where count incremented so partial rd
tests that are aborted with INT_MAX return are also counted.
Example numbers for first 50 frames of Akiyo.
Speed 0 ~84.4 rd operations / pixel
Speed 1 ~28.8
Speed 2 ~11.9
Change-Id: Ib956e787e12f7fa8b12d3a1a2f6cda19a65a6cb8
The 32x32 quantization process can potentially have the intermediate
stacks over 16-bit range, thereby causing enc/dec mismatch. This commit
fixes this overflow issue in the SSSE3 implementation, as well as the
prototype, of 32x32 quantization.
This fixes issue 607 from webm@googlecode.
Change-Id: I85635e6ca236b90c3dcfc40d449215c7b9caa806
The two arrays are typically initialized to INT64_MAX, if they are not
filled with valid values before the addition, the values can overflow
and lead to wrong results.
Change-Id: I515de22cf3e8f55af4b74bdb2c8eb821a02d3059
This patch is a reformatted version of optimizations done by
engineers at Intel (Erik/Tamar) who have been providing
performance feedback for VP9. For the test clips used (720p, 1080p),
up to 1.2% performance improvement was seen.
Change-Id: Ic1a7149098740079d5453b564da6fbfdd0b2f3d2
Switching from mi_{width, height}_log2 and b_{width, height}_log2 to
num_8x8_blocks_{wide, high} and num_4x4_blocks_{wide, high}. Removing
redundant code, adding const.
Change-Id: Iaab2207590fd24d0b76999071778d1395dc5cd5d
Incorporates a speed feature for fast forward updates of
coefficients. This feature takes 3 values:
0 - use standard 2-loop version
1 - use a 1-loop version
2 - use a 1-loop version with reduced updates
Results: derfraw300 +0.007% (on speed 0) at feature value = 1
-0.160% (on speed 0) at feature value = 2
There is substantial speed up at speeds 2 and above for low
resolution sequences where the entropy updates are a big part
of the overall computations.
Change-Id: Ie96fc50777088a5bd441288bca6111e43d03bcae
This commit resolved a mis-alignment issue in compound inter-inter
prediction of sub8x8. This patch follows solution from dkovalev@.
Change-Id: I3cc0cf7e55b84110e0c42ef4b2e6ca7ac3f8f932
In subpel_avg_variance functions, code similar to the following
punpkldq m2, [addr]
actually reads 8 bytes. For functions that are supposed to work on
buffers only have less 8 bytes a line, this caused valgrind error
of reading uninitialized memory.
Change-Id: I2a4c079dbdbc747829bd9e2ed85f0018ad2a3a34
vp9_setup_interp_filters before each inter block decoding, it is not
necessary to call it just before the whole frame decoding.
Change-Id: Id1b0ee62f987474e27eafba0013a4896b492c400
Removing references to plane_block_width and plane_block_height (we are
going to delete the latter ones).
Change-Id: I7982da4d373aebb54d2209dc8886f6192df4d287
Make the current head working properly, while working on fixing an
issue in the SSSE3 implementation of 32x32 quantization.
Change-Id: Ic029da3fd7f1f5e58bc641341cbd226ec49a16bc
