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The bit to error transformation got doubled as a result of going from
8-bit to 9-bit costs (change d13385c).
Use defines to derive the scale numbers and comment some of the fields.
derf: -0.023 BDRATE
hevcmr: +0.067 BDRATE
stdhd: +0.098 BDRATE
(These are substantially smaller than than the original gains from 8 to
9 bit costing.)
Change-Id: I6a2b3b029b2f1415e4f90a05709b2333ec0eea9b
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If a superblock contains alot of "skin" then force split
of 64x64 partition, and make some adjustments in mode selection.
This helps to reduce artifacts on moving face/skin areas at low bitrates.
Little/no change in metrics: avgPSNR/SSIM down by ~0.12%.
Small encoding time increase < 1%.
Change-Id: Ic57f52148c3716f391419fab0530d916e4c1d186
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This change alters the nature and use of exhaustive motion search.
Firstly any exhaustive search is preceded by a normal step search.
The exhaustive search is only carried out if the distortion resulting
from the step search is above a threshold value.
Secondly the simple +/- 64 exhaustive search is replaced by a
multi stage mesh based search where each stage has a range
and step/interval size. Subsequent stages use the best position from
the previous stage as the center of the search but use a reduced range
and interval size.
For example:
stage 1: Range +/- 64 interval 4
stage 2: Range +/- 32 interval 2
stage 3: Range +/- 15 interval 1
This process, especially when it follows on from a normal step
search, has shown itself to be almost as effective as a full range
exhaustive search with step 1 but greatly lowers the computational
complexity such that it can be used in some cases for speeds 0-2.
This patch also removes a double exhaustive search for sub 8x8 blocks
which also contained a bug (the two searches used different distortion
metrics).
For best quality in my test animation sequence this patch has almost
no impact on quality but improves encode speed by more than 5X.
Restricted use in good quality speeds 0-2 yields significant quality gains
on the animation test of 0.2 - 0.5 db with only a small impact on encode
speed. On most clips though the quality gain and speed impact are small.
Change-Id: Id22967a840e996e1db273f6ac4ff03f4f52d49aa
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This is using a define instead of an enum to keep byte packing.
Change-Id: I3abb07c8bfe377e19be4531b624af7b7b4207792
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Change-Id: Iefc2eb78e71472ecf51802ec59ff32caef4bd0f4
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to MB_MODE_INFO_EXT. This saves 36 bytes per 8x8 area for
both the decoder and encoder. (encoder has two MODE_INFO
buffers)
Change-Id: If006abb2224acaf326df3c2be09e77e967662107
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This commit allows the encoder to account for additional chroma
plane costs in the mode decision process, if the current block
potentially contains significant color change. It improves the
visual quality at very low bit-rates.
The compression performance of dark720p is improved by 12.39% in
speed 6. For jimred at 150 kbps, the PSNR of V component (red)
increased by 0.2 dB, at the expense of about 5% increase in
encoding time. Note that for sequences where the chroma components
are fairly consistent, the encoding time increase is negligible.
On average the rtc set compression performance is improved by
1.172% in PSNR and 1.920% in SSIM.
Change-Id: Ia55b24ef23a25304f7ec9958fbf07fd6e658505c
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This reverts commit 9946ee23e0a4c158e26a505b162a072f81b8a3be.
Fix the ssse3 asm function.
Change-Id: I07f77a63aa98087626e45c4e87aa5dcafc0b0b07
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This reverts commit e9b586e21bb899e247346e82bccf5afb42604910.
Change-Id: I5b36e6727da6c05278d97e2c37b80c109f79bed4
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zbin extra / zbin_oq_value was widely passed around,
hence removal touches a lot of code.
Change-Id: Idc94359735b60c38a160e4385ae09d5ca8b6b8e5
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The max_partition_size and max_partition_size are set at the
beginning while setting speed features, and then adjusted at
SB level. Moving them to mb struct ensures there is a local
copy for each thread.
Change-Id: I7dd08dc918d9f772fcd718bbd6533e0787720ad4
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This commit removes the cyclic aq mode dependency on
in_static_area and reworks the corresponding cut-off thresholds.
It improves the compression performance of speed -5 by 1.47% in
PSNR and 2.07% in SSIM, and the compression performance of speed
-6 by 3.10% in PSNR and 5.25% in SSIM. Speed wise, about 1% faster
in both settings at high bit-rates.
Change-Id: I1ffc775afdc047964448d9dff5751491ba4ff4a9
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Uses highbd_ prefix convention consistently.
Change-Id: I58f7f799a7ff8e32701bcd71c955bcf1cdd4581e
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This commit removes unused header file vp9_onyxc_int.h and repeatedly
included file vpx_ports/mem.h from vp9_block.h
Change-Id: I400b210bd1da48f1880bd50a8f4a6e2c690e15a1
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Adds various high bitdepth transform functions and tests.
Much of the changes are related to using typedefs tran_low_t
and tran_high_t for the final transform cofficients and intermediate
stages of the transform computation respectively rather than fixed
types int16_t/int. When vp9_highbitdepth configure flag is off,
these map tp int16_t/int32_t, but when the flag is on, they map
to int32_t/int64_t to make space for needed extra precision.
Change-Id: I3c56de79e15b904d6f655b62ffae170729befdd8
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This commit allows the encoder to store outcomes of single reference
frame modes and compares them to decide if the inter prediction
filter, forward transform, and quantization can be skipped.
The compression performance of speed 3 is down
derf -0.364%
stdhd -0.198%
For test sequences, the speed 3 runtime is reduced
highway CIF 100 kbps, 51976 ms -> 45033 ms, 13% speed-up
stockholm 720p 1000 kbps, 71826 ms -> 67838 ms, 5.5% speed-up
pedestrian 1080p 2000 kbps, 154924 ms -> 150702 ms, 2.6% speed-up
Change-Id: I5aa26f918d2b4b5197a2c0afa2779319f1c88e44
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This commit extends the sse and forward transform computation flag
to support the case 64x64 blocks where there are 4 32x32 2D-DCT
blocks.
Change-Id: I86a3e805dfaa0f3abd812f590520c71aa0e40473
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The mv cost table set is maintained at frame level, hence moved to
VP9_COMP.
Change-Id: Icb3d0185d47443590bd11357de729aa4ba5c5e5e
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This commit enables encoder to select fast forward transform and
quantization path according to the prediction residual sse/variance,
in the rate-distortion optimization scheme.
Change-Id: Ief9fc3844fd4107166d401970e800c6e5ce2b5fe
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Change-Id: Ieae182d72d625d0d3fd4ed7c7d24cb521a0f21b0
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Change-Id: Idd1327852f0df0eab0ea3b33959f2b8292b77301
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This commit re-designs the quantization process for transform
coefficient blocks of size 4x4 to 16x16. It improves compression
performance for speed 7 by 3.85%. The SSSE3 version for the
new quantization process is included.
The average runtime of the 8x8 block quantization is reduced
from 285 cycles -> 255 cycles, i.e., over 10% faster.
Change-Id: I61278aa02efc70599b962d3314671db5b0446a50
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Before encoding a frame, calculate and store each 16x16 block's
variance of source difference between last and current frame.
Find partitioning threshold T for the frame from its variance
histogram, and then use T to make partition decisions.
Comparing with fixed 16x16 partitioning, rtc set test showed an
overall psnr gain of 3.242%, and ssim gain of 3.751%. The best
psnr gain is 8.653%.
The overall encoding speed didn't change much. It got faster for
some clips(for example, 12% speedup for vidyo1), and a little
slower for others.
Also, a minor modification was made in datarate unit test.
Change-Id: Ie290743aa3814e83607b93831b667a2a49d0932c
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Change-Id: Ibb841a1fa4d08d164cf5461246ec290f582b1f80
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Change-Id: Ifa6374e9db5919322733b656e0865f5f19ee6f2c
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This commit enables a fast path computational flow for forward
transformation. It checks the sse and variance of prediction
residuals and decides if the quantized coefficients are all
zero, dc only, or more. It then selects the corresponding coding
path in the forward transformation and quantization stage.
It is currently enabled in rtc coding mode. Will do it for rd
coding mode next.
In speed -6, the runtime for pedestrian_area 1080p at 1000 kbps
goes down from 14234 ms to 13704 ms, i.e., about 4% speed-up.
Overall coding performance for rtc set is changed by -0.18%.
Change-Id: I0452da1786d59bc8bcbe0a35fdae9f623d1d44e1
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The final goal is eventually to get rid of both itxm_add and fwd_txm4x4.
This patch does it in the decoder.
Change-Id: Ibb3db57efbcbb1ac387c6742538a9fcf2c6f24a5
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Change-Id: Icd7eea20e944e3e28e5eb20cdc088866a54d53b4
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Because PC_TREE is encoder-level data, not MACROBLOCK-level data.
Change-Id: I4f620c0781acd3a2744860610117e74948e0b2b5
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Change-Id: I61471dd0f77d1547abec13cbf9670e1c4eb9131a
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Change-Id: I2ad333553e673dbabcdc0f0366aea311e90849bf
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This commit enables a background detection approach for adaptive
quantizer control. It combines the cyclic refresh pattern and the
background information to determine the segment id for adaptive
quantizer selection, prior to the non-RD mode decision process.
It hence allows proper quantization information update for a more
precise rate-distortion modeling in the non-RD mode decision.
The compression performance of speed -5 for rtc set is improved
by 2.5%, at no speed change.
Change-Id: Ic3713e8ed9185b403b5b1679d19dabd57506d452
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This patch sets up a quad_tree structure (pc_tree) for holding all of
pick_mode_context data we use at any square block size during encoding
or picking modes. That includes contexts for 2 horizontal and 2 vertical
splits, one none, and pointers to 4 sub pc_tree nodes corresponding
to split. It also includes a pointer to the current chosen partitioning.
This replaces code that held an index for every level in the pick
modes array including: sb_index, mb_index,
b_index, ab_index.
These were used as stateful indexes that pointed to the current pick mode
contexts you had at each level stored in the following arrays
array ab4x4_context[][][],
sb8x4_context[][][], sb4x8_context[][][], sb8x8_context[][][],
sb8x16_context[][][], sb16x8_context[][][], mb_context[][], sb32x16[][],
sb16x32[], sb32_context[], sb32x64_context[], sb64x32_context[],
sb64_context
and the partitioning that had been stored in the following:
b_partitioning, mb_partitioning, sb_partitioning, and sb64_partitioning.
Prior to this patch before doing an encode you had to set the appropriate
index for your block size ( switch statement), update it ( up to 3
lookups for the index array value) and then make your call into a recursive
function at which point you'd have to call get_context which then
had to do a switch statement based on the blocksize, and then up to 3
lookups based upon the block size to find the context to use.
With the new code the context for the block size is passed around directly
avoiding the extraneous switch statements and multi dimensional array
look ups that were listed above. At any level in the search all of the
contexts are local to the pc_tree you are working on (in?).
In addition in most places code that used to call sub functions and
then check if the block size was 4x4 and index was > 0 and return
now don't preferring instead to call the right none function on the inside.
Change-Id: I06e39318269d9af2ce37961b3f95e181b57f5ed9
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Delete code relating to the old VP8_TUNE_SSIM flag
as this code does not currently work and is largely made
redundant in VP9 by the various AQ modes.
Change-Id: I71f28e1f680573d296422254489000678552b17b
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Change-Id: I0e7d2815839d8a64250116a5486570d03659a4c0
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We use local variable for token_cache in the decoder.
Change-Id: I032763fa7894313cffe73e3f14863ae1d0527665
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Removed mode_sad.
Change-Id: I230b42ac9b617ae2c375e297057aa0756bd355fe
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Change-Id: I47b3c38aadfd8f3ea08515a18a5948aa1375c650
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Change-Id: I03451c88536bc498edddbe0cd9773ff79da085c2
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Change-Id: If175d97990454b171b6abeddb76d142497484487
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* Reduce the number of short cirtcuit checks by pre-computing and combining like checks.
* Postpone non-trivial initializations until after the shortcircuits are evaluated.
* Add some consts and const pointers.
No change to the actual results of the call or output of the encoder.
Change-Id: Ie44c4702aec6e08cfe0b8b0ba3cd6b57206478d1
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Change-Id: Ic5692af975fe6bd2d8ec82bbae103c6f7c2fc13e
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* Avoid unnecessary type erasure
* Prune unused/duplicate fields from struct rdcost_block_args
* Make struct rdcost_block_args a local
Change-Id: I4f1fd4837ccd028bbfe727191ee8d69f0463b7e5
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Corresponding renames:
subpel_kernel => interp_kernel
vp9_get_filter_kernel() => vp9_get_interp_kernel()
pred_filter_type => pred_interp_filter
adaptive_pred_filter_type => adaptive_pred_interp_filter
mcomp_filter_type => interp_filter
read_interp_filter_type() => read_interp_filter()
write_interp_filter_type() => write_interp_filter()
fix_mcomp_filter_type() => fix_interp_filter()
Change-Id: I1fa61fa1dc81ebbf043457c3ee2d8d4515bee6d3
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Change-Id: I4f51ce859a97bf1b8fd2b37ac585b7c643232b69
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This commit setups a test framework for real-time coding. It enables
a light motion search for non-RD mode decision purpose.
Change-Id: I8bec656331539e963c2b685a70e43e0ae32a6e9d
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