Commit Graph

545 Commits

Author SHA1 Message Date
Adrian Grange
4ee671a15c Merge "Initial addition of multiple ARF frames" into experimental 2013-04-15 09:46:16 -07:00
Adrian Grange
c2876cf0fd Initial addition of multiple ARF frames
This is work-in-progress, it implements multiple ARF
encoding behind an experimental flag.

It adds the ability to insert multiple ARF frames into a
single ARF group. This patch implements the reordering
of the coded frames, and implements a fixed-length coding
pattern. It applies a fixed quantizer strategy based on
where the frame is in the coding sequence.

Further work to modify the rate control strategy is
ongoing and will be submitted via a set of future patches.

In this first step, each ARF group is recursively
bisected and an ARF frame added at that position in the
sequence. The recursion continues until ARF frames are
within MIN_GF_INTERVAL frames.

The code sits behind the "multiple-arf" experimental
flag ("CONFIG_MULTIPLE_ARF"). The experimental flag
"oneshotq" ("CONFIG_ONESHOTQ") also needs to be enabled
for this patch to work correctly.

Change-Id: Ie473b05ebb43ac473c0cfb659b2b8042823085e2
2013-04-15 09:11:39 -07:00
Dmitry Kovalev
8ae091823d Merge "Encoder code cleanup." into experimental 2013-04-14 10:58:44 -07:00
Dmitry Kovalev
399a6cbcde Merge "Renaming vp9_token_struct to vp9_token and removing previous typedef." into experimental 2013-04-14 04:31:39 -07:00
Jingning Han
3ba9dd4165 Enable inter predictor for rectangular block size
Combine superblock inter predictors into a unified function that
allows configurable block width and height. The inter predictions
of block sizes smaller than 16x16 are handled differently. To be
continued on merging them later.

Change-Id: I14075959dd5e221f00c205c99ca35c1c31ef728e
2013-04-12 11:51:58 -07:00
Jingning Han
840a910b65 Merge changes I196814c0,I896fdfa0 into experimental
* changes:
  Move prediction hit counting to update_state().
  Merge loop over all macroblock modes into encode_sb_row().
2013-04-12 10:51:06 -07:00
Yaowu Xu
7de5edd14a Rename B_PRED to I4X4_PRED
So it is consistent with I8x8_PRED.

Change-Id: Iefa65124b2419690d83e526c611129c0ede29d11
2013-04-12 09:23:58 -07:00
Ronald S. Bultje
79fd8c29d6 Move prediction hit counting to update_state().
The probabilities derived from these statistics are used in bitstream
writing; therefore, we should only do this when we actually decide to
use macroblock coding (over superblock coding). Derf gains +0.15%.

Change-Id: I196814c070a7c79889590658ce10a6eb07454389
2013-04-11 17:13:02 -07:00
Jingning Han
815e95fbeb Make intra predictor support rectangular blocks
The intra predictor supports configurable block sizes. It can handle
intra prediction down to 4x4 sizes, when enabled in BLOCK_SIZE_TYPE.

Change-Id: I7399ec2512393aa98aadda9813ca0c83e19af854
2013-04-11 16:45:57 -07:00
Ronald S. Bultje
d415d28717 Merge loop over all macroblock modes into encode_sb_row().
Rename pick_mb_modes to pick_mb_mode, since it now handles only a
single macroblock. This is consistent with pick_sb_mode handling a
single non-macroblock.

Change-Id: I896fdfa06436b2d8c24d6474718cc74420df6b3b
2013-04-11 15:56:39 -07:00
Ronald S. Bultje
deeef42b77 Merge "Remove subtract_mb* functions." into experimental 2013-04-11 15:50:40 -07:00
Scott LaVarnway
cff266bbef Merge "WIP: removing predictor buffer usage from decoder" into experimental 2013-04-11 15:24:33 -07:00
Ronald S. Bultje
56d01ee0a6 Merge "Remove unused macroblock versions of reconstruction functions." into experimental 2013-04-11 15:19:08 -07:00
Ronald S. Bultje
44dc18064e Merge "Remove "tplist" from VP9_COMP." into experimental 2013-04-11 15:17:03 -07:00
Ronald S. Bultje
69902c6bf0 Merge "Merge pick_sb_modes and pick_sb64_modes." into experimental 2013-04-11 15:06:37 -07:00
Deb Mukherjee
7a97959f13 Merge "Turning model-based updates on with modelcoefprob" into experimental 2013-04-11 14:54:53 -07:00
Deb Mukherjee
66f413af4f Turning model-based updates on with modelcoefprob
This patch changes the default with the modecoefprob expt
to use mode-based forward updates with one-node pegged
modeling.

The maximum difference with fully trained tables is now
less that 0.1%.

Change-Id: I06b44322e10c6703f93f3c1d48d973b1136a0618
2013-04-11 14:45:26 -07:00
John Koleszar
4ba74ae81a Merge "Remove unused vp9 ppc files" into experimental 2013-04-11 14:39:18 -07:00
Scott LaVarnway
6189f2bcb1 WIP: removing predictor buffer usage from decoder
This patch will use the dest buffer instead of the
predictor buffer.  This will allow us in future commits
to remove the extra mem copy that occurs in the dequant
functions when eob == 0.  We should also be able to remove
extra params that are passed into the dequant functions.

Change-Id: I7241bc1ab797a430418b1f3a95b5476db7455f6a
2013-04-11 13:55:18 -07:00
John Koleszar
8bf6de725c Merge changes I6721e42f,Iaffb1ae8 into experimental
* changes:
  tokenize: convert skippable functions
  Add foreach_transformed_block
2013-04-11 13:36:25 -07:00
John Koleszar
633d9e7b4f Remove unused vp9 ppc files
Change-Id: I3fe8c529ddec658cfa2376cfc05d9c8a5366e978
2013-04-11 13:29:37 -07:00
Dmitry Kovalev
24f18e1c34 Renaming vp9_token_struct to vp9_token and removing previous typedef.
Change-Id: If69c3d795f87af5cc7bfdfe70ef733c41b4d55c8
2013-04-11 13:01:52 -07:00
John Koleszar
c2bd46bf45 tokenize: convert skippable functions
Use the common block walker to calculate skippability.

Change-Id: I6721e42f065df237426c91c1d871ec226ba7cdcb
2013-04-11 12:27:37 -07:00
Ronald S. Bultje
340bc46f49 Remove subtract_mb* functions.
Use subtract_sb* instead.

Change-Id: I3f34140ab97061063a4452945347ef1fe37e13d1
2013-04-11 12:27:15 -07:00
Ronald S. Bultje
13e41ba440 Remove unused macroblock versions of reconstruction functions.
More specifically, remove vp9_quantize_mb*, vp9_optimize_mb*,
vp9_inverse_transform_mb* and vp9_transform_mb*. Instead, use the
generic _sb* functions that take a size argument, and call them with
BLOCK_SIZE_MB16X16.

Change-Id: I33024afea95d3a23ffbc1df7da426e4645110f29
2013-04-11 12:27:15 -07:00
Ronald S. Bultje
2e2b8a53cc Remove "tplist" from VP9_COMP.
It is write-only.

Change-Id: I2412344688d96593cc01c038e7f51410d0f85ed0
2013-04-11 12:27:14 -07:00
John Koleszar
c18b2617a4 Remove vp9_reset_mb_tokens_context
Use sb-common version instead.

Change-Id: If2552b5a39fd2e5272f66a41c5667dda85fd3939
2013-04-11 11:39:19 -07:00
Dmitry Kovalev
ec299e2092 Encoder code cleanup.
Removing duplicated code from vp9_encodemv.c and reusing ROUND_POWER_OF_TWO
macro definitions.

Change-Id: I9caf0c17f761ada7905cb99a3e2a31f871fef0f9
2013-04-11 11:08:00 -07:00
Ronald S. Bultje
605ff051f7 Merge pick_sb_modes and pick_sb64_modes.
Change-Id: Iad69e7a3b7e470acf6094f6a52e7da69066fd552
2013-04-11 09:33:49 -07:00
Ronald S. Bultje
38d7945345 Slight simplification of SB RD loop recursion conditions.
Change-Id: I87a406fcd18ab043253ca0c009d1182fdc5c3046
2013-04-11 09:14:55 -07:00
Ronald S. Bultje
4eb537c0e6 A few more cases where sb_type was used arithmetically.
With these fixed, the codec produces identical results regardless of
what literal values are used for the enum members in BLOCK_SIZE_*.

Change-Id: I26db8e08019b58ba432af1f0950ebe6b0eb4ad8c
2013-04-10 18:04:57 -07:00
Ronald S. Bultje
33d94a843f Remove copying of coefficients and predictor in i8x8 RD loop.
The resulting values are never used.

Change-Id: I688caf30da9aab87aa280cce913eda4f33172293
2013-04-10 17:39:03 -07:00
Ronald S. Bultje
8fb5be48a6 Make usage of sb_type independent of literal values.
Change-Id: I0d12f9ef9d960df0172a1377f8e5236eb6d90492
2013-04-10 17:38:57 -07:00
Ronald S. Bultje
b4f6098ef7 Make RD superblock mode search size-agnostic.
Merge various super_block_yrd and super_block_uvrd versions into one
common function that works for all sizes. Make transform size selection
size-agnostic also. This fixes a slight bug in the intra UV superblock
code where it used the wrong transform size for txsz > 8x8, and stores
the txsz selection for superblocks properly (instead of forgetting it).
Lastly, it removes the trellis search that was done for 16x16 intra
predictors, since trellis is relatively expensive and should thus only
be done after RD mode selection.

Gives basically identical results on derf (+0.009%).

Change-Id: If4485c6f0a0fe4038b3172f7a238477c35a6f8d3
2013-04-10 16:50:30 -07:00
Yaowu Xu
8e9819230d Merge "Remove obselete code" into experimental 2013-04-10 14:56:28 -07:00
Yaowu Xu
2da90fddc2 Remove obselete code
The strategy to run fast loop filter picking for encoder speed-up
should be revisited at a later stage.

Change-Id: I3b75e06d767cff41be952a42e63b3292f4eab996
2013-04-10 13:45:22 -07:00
Dmitry Kovalev
0cef7234e1 Merge "Fixing upper case names." into experimental 2013-04-10 13:29:38 -07:00
Dmitry Kovalev
1c6df34c06 Merge "Code cleanup in bitstream code." into experimental 2013-04-10 10:18:50 -07:00
Ronald S. Bultje
1932828d19 Merge "Make SB coding size-independent." into experimental 2013-04-10 08:51:58 -07:00
Ronald S. Bultje
a3874850dd Make SB coding size-independent.
Merge sb32x32 and sb64x64 functions; allow for rectangular sizes. Code
gives identical encoder results before and after. There are a few
macros for rectangular block sizes under the sbsegment experiment; this
experiment is not yet functional and should not yet be used.

Change-Id: I71f93b5d2a1596e99a6f01f29c3f0a456694d728
2013-04-09 21:28:27 -07:00
Dmitry Kovalev
c34f6fcb54 Fixing upper case names.
Renaming Y1dequant to y_dequant, UVdequant to uv_dequant, QIndex to qindex.

Change-Id: I1c356e5f886deb3f8807dc212de9799b55b09d58
2013-04-09 10:46:57 -07:00
Dmitry Kovalev
d1cff2deb1 Code cleanup in bitstream code.
Lower case variable names, less code.

Change-Id: I1abc8f592ad2343ab5c76fe2d16262741a4a894a
2013-04-08 19:07:29 -07:00
Jingning Han
12bf0796e6 Clamp inferred motion vectors only
Clamp only the motion vectors inferred from neighboring reference
macroblocks. The motion vectors obtained through motion search in
NEWMV mode are constrained during the search process, which allows
a relatively larger referencing region than the inferred mvs.
Hence further clamping the best mv provided by the motion search may
affect the efficacy of NEWMV mode.

Synchronized the decoding process. The decoded mvs in NEWMV modes
should be guaranteed to fit in the effective range. Put a mv range
clamping function there for security purpose.

This improves the coding performance of high motion sequences, e.g.,
derf set:
foreman 0.233%
husky   0.175%
icd     0.135%
mother_daughter 0.337%
pamphlet        0.561%

stdhd set:
blue_sky 0.408%
city     0.455%
also saw sunflower goes down by -0.469%.

Change-Id: I3fcbba669e56dab779857a8126a91b926e899cb5
2013-04-08 11:37:03 -07:00
John Koleszar
fa135d7b9e Merge changes Ibbfa68d6,Idb76a0e2 into experimental
* changes:
  Move EOB to per-plane data
  Move qcoeff, dqcoeff from BLOCKD to per-plane data
2013-04-05 15:56:50 -07:00
Ronald S. Bultje
9161127ee9 Merge "Remove full-pixel-related code." into experimental 2013-04-05 13:46:07 -07:00
Ronald S. Bultje
36c3a67c20 Remove full-pixel-related code.
This is a VP8-only feature (part of profile 3) that is unsupported in
VP9.

Change-Id: I78016eede8d9c834d44d4c517f3e8b8fc2a378b1
2013-04-05 12:50:19 -07:00
Yaowu Xu
e79a3ff5f3 Removed a speed feature no longer used
Change-Id: Id0c2e44daa936f1d6fb76469fd1bd72a4d7c19fd
2013-04-05 10:43:20 -07:00
John Koleszar
05a79f2fbf Move EOB to per-plane data
Continue migrating data from BLOCKD/MACROBLOCKD to the per-plane
structures.

Change-Id: Ibbfa68d6da438d32dcbe8df68245ee28b0a2fa2c
2013-04-04 21:30:23 -07:00
John Koleszar
4c05a051ab Move qcoeff, dqcoeff from BLOCKD to per-plane data
Start grouping data per-plane, as part of refactoring to support
additional planes, and chroma planes with other-than 4:2:0
subsampling.

Change-Id: Idb76a0e23ab239180c818025bae1f36f1608bb23
2013-04-04 16:30:57 -07:00
Yaowu Xu
9780d58e94 make one_shot_q an experiment
so it is configurable to faciliate testings

Change-Id: I247b62736c3a08ec2934793959d1ae605a05efa3
2013-04-04 14:14:51 -07:00
Deb Mukherjee
73031aaa7d Bugfix in encode_inter_mb_segment_8x8
Fixes an indexing bug. Looks like the bug has been there for a while.

Change-Id: I9fc04b0c30754bcb47366ad94a08112925600c4d
2013-04-04 11:07:19 -07:00
Paul Wilkins
9b9136f8a2 Fixed incorrect use of compute_qdelta()
This function expects real Q values as inputs
not index values.

The use-age her impacts the Q chosen for force key
frames. Though this is a bug fix I have not yet verified
whether following the bug fix the q multiplier value used is
correct.

Change-Id: I49f6da894d90baeb1e86c820c335f02dc80d3b66
2013-04-04 10:19:16 +01:00
Yunqing Wang
4ca882f32f Modify vp9_setup_interp_filters function
Took vp9_setup_scale_factors_for_frame() out from
vp9_setup_interp_filters(), so that it is only called once per
frame instead of per macroblock. Decoder tests showed a 1.5%
performance gain.

Change-Id: I770cb09eb2140ab85132f82aed388ac0bdd3a0aa
2013-04-03 13:49:55 -07:00
John Koleszar
8b71b8a6de Merge "Renaming sb32_coded and sb64_coded fields." into experimental 2013-04-02 21:49:03 -07:00
John Koleszar
ede03dfa48 Merge "Code cleanup in vp9_onyx_if.c." into experimental 2013-04-02 20:16:56 -07:00
Dmitry Kovalev
dca8ad178c Renaming sb32_coded and sb64_coded fields.
Renaming sb32_coded to prob_sb32_coded and sb64_coded to prob_sb64_coded.

Change-Id: I6de5cad00a57c3e066d53467f8c38cb6073dce11
2013-04-02 18:21:55 -07:00
Dmitry Kovalev
6f53eee531 Code cleanup in vp9_onyx_if.c.
Using clamp and MIN/MAX functions instead of plain C code. Lower case
variable names. Removing redundant parenthesis.

Change-Id: Ibf7cc5fbe4fbdb5029049a599af71534176e6f42
2013-04-02 10:24:56 -07:00
John Koleszar
49bc402a94 Merge "Code cleanup." into experimental 2013-04-01 21:12:56 -07:00
John Koleszar
a417a6e32c Merge "Removing redundant function arguments." into experimental 2013-04-01 21:09:48 -07:00
Dmitry Kovalev
50e54c112d Code cleanup.
Adding multiple16 function, removing redundant code, better formatting.

Change-Id: I50195b78ac8ab803e3d05c8fb05a7ca134fab386
2013-04-01 18:23:04 -07:00
Ronald S. Bultje
cdac4ad4e6 Merge "Calculate SSIM over both reconstruction as well as postproc buffer." into experimental 2013-04-01 17:22:29 -07:00
Ronald S. Bultje
6dd6ffb0bb Calculate SSIM over both reconstruction as well as postproc buffer.
We used to calculate SSIM only over the postproc buffer, whereas we
calculate PSNR for both. Compared to postproc-SSIM, this is about 0.3%
higher for derf, 1.4% lower for hd and 0.5% lower for stdhd, although
it is highly variable on a per-clip basis.

Change-Id: I8dd491f0f5b4201dedfb15d288c854d5d4caa10f
2013-04-01 09:10:27 -07:00
Deb Mukherjee
e3955007df Merge "Framework changes in nzc to allow more flexibility" into experimental 2013-03-29 15:57:27 -07:00
John Koleszar
2e181c2d0b Merge "General code cleanup." into experimental 2013-03-29 10:40:34 -07:00
Paul Wilkins
0b4deea896 Merge "Adjust mv_ratio_accumulator threshold." into experimental 2013-03-28 12:53:23 -07:00
Ronald S. Bultje
6cb2fcf601 Merge "Fix mix-up in pt token indexing." into experimental 2013-03-28 12:53:00 -07:00
Yaowu Xu
e071fe15b2 Merge "Fix crash when --tune=ssim is selected." into experimental 2013-03-28 11:23:44 -07:00
Ronald S. Bultje
ed78d1439f Merge "Save nzcstats." into experimental 2013-03-28 09:36:58 -07:00
Deb Mukherjee
fe9b5143ba Framework changes in nzc to allow more flexibility
The patch adds the flexibility to use standard EOB based coding
on smaller block sizes and nzc based coding on larger blocksizes.
The tx-sizes that use nzc based coding and those that use EOB based
coding are controlled by a function get_nzc_used().
By default, this function uses nzc based coding for 16x16 and 32x32
transform blocks, which seem to bridge the performance gap
substantially.

All sets are now lower by 0.5% to 0.7%, as opposed to ~1.8% before.

Change-Id: I06abed3df57b52d241ea1f51b0d571c71e38fd0b
2013-03-28 09:33:50 -07:00
Ronald S. Bultje
9eea9fa206 Fix mix-up in pt token indexing.
This fixes uninitialized reads in the trellis, and probably makes the
trellis do something again.

Change-Id: Ifac8dae9aa77574bde0954a71d4571c5c556df3c
2013-03-28 09:24:29 -07:00
Paul Wilkins
17ef6a8dfd Adjust mv_ratio_accumulator threshold.
This threshold effectively limits the amount of motion
from one end of a GF/ARF group to the other.
This patch makes the threshold depend on image size.

Change-Id: Id45d1d7bced815f86ddd037be53164894b00b82f
2013-03-28 12:49:02 +00:00
Paul Wilkins
befb0393c5 Fix crash when --tune=ssim is selected.
Crash fix only. No functional change or testing.

Change-Id: I0c6d114d024c29fc11ae61666f5938f11b01dd6a
2013-03-28 12:48:30 +00:00
Dmitry Kovalev
17cddb4e26 Removing redundant function arguments.
Almost all arguments for vp9_build_inter32x32_predictors_sb and
vp9_build_inter64x64_predictors_sb can be deduced from the first macroblock
argument.

Change-Id: I5d477a607586d05698d5b3b9b9bc03891dd3fe83
2013-03-27 16:19:27 -07:00
Dmitry Kovalev
180cd5faa5 General code cleanup.
Removing redundant code, lower case variable names, better indentation,
better parameter names, adding const to readonly parameters.

Change-Id: Ibfdee00f60316fdc5b3f024028c7aaa76a627483
2013-03-27 14:22:30 -07:00
John Koleszar
28d9202ed4 Merge "Cleaning up rate control code." into experimental 2013-03-27 12:29:00 -07:00
Ronald S. Bultje
35dc9f5546 Save nzcstats.
Change-Id: I4a3a9eb9f9d17218a0f0d7e148123d34dae879c2
2013-03-27 09:44:47 -07:00
Ronald S. Bultje
7c70145914 Merge "Add col/row-based coefficient scanning patterns for 1D 8x8/16x16 ADSTs." into experimental 2013-03-26 19:17:08 -07:00
Ronald S. Bultje
3c77ab4c0f Merge "Redo banding for all transforms." into experimental 2013-03-26 19:16:44 -07:00
Ronald S. Bultje
c6efbbcfe4 Merge "Use above/left (instead of previous in scan-order) as token context." into experimental 2013-03-26 19:16:24 -07:00
Deb Mukherjee
23144d2345 Implicit weighted prediction experiment
Adds an experiment to use a weighted prediction of two INTER
predictors, where the weight is one of (1/4, 3/4), (3/8, 5/8),
(1/2, 1/2), (5/8, 3/8) or (3/4, 1/4), and is chosen implicitly
based on consistency of the predictors to the already
reconstructed pixels to the top and left of the current macroblock
or superblock.

Currently the weighting is not applied to SPLITMV modes, which
default to the usual (1/2, 1/2) weighting. However the code is in
place controlled by a macro. The same weighting is used for Y and
UV components, where the weight is derived from analyzing the Y
component only.

Results (over compound inter-intra experiment)
derf: +0.18%
yt: +0.34%
hd: +0.49%
stdhd: +0.23%

The experiment suggests bigger benefit for explicitly signaled weights.

Change-Id: I5438539ff4485c5752874cd1eb078ff14bf5235a
2013-03-26 16:58:56 -07:00
Ronald S. Bultje
d9094d8fd3 Add col/row-based coefficient scanning patterns for 1D 8x8/16x16 ADSTs.
These are mostly just for experimental purposes. I saw small gains (in
the 0.1% range) when playing with this on derf.

Change-Id: Ib21eed477bbb46bddcd73b21c5c708a5b46abedc
2013-03-26 16:46:13 -07:00
Ronald S. Bultje
3120dbddb1 Redo banding for all transforms.
Now that the first AC coefficient in both directions use the same DC
as their context, there no longer is a purpose in letting both have
their own band. Merging these two bands allows us to split bands for
some of the very high-frequency AC bands.

In addition, I'm redoing the banding for the 1D-ADST col/row scans. I
don't think the old banding made any sense at all (it merged the last
coefficient of the first row/col in the same band as the first two of
the second row/col), which was clearly an oversight from the band being
applied in scan-order (rather than in their actual position). Now,
coefficients at the same position will be in the same band, regardless
what scan order is used. I think this makes most sense for the purpose
of banding, which is basically "predict energy for this coefficient
depending on the energy of context coefficients" (i.e. pt).

After full re-training, together with previous patch, derf gains about
1.2-1.3%, and hd/stdhd gain about 0.9-1.0%.

Change-Id: I7a0cc12ba724e88b278034113cb4adaaebf87e0c
2013-03-26 16:46:13 -07:00
Ronald S. Bultje
790fb13215 Use above/left (instead of previous in scan-order) as token context.
Pearson correlation for above or left is significantly higher than for
previous-in-scan-order (absolute values depend on position in scan, but
in general, we gain about 0.1-0.2 by using either above or left; using
both basically just makes this even better). For eob branch skipping,
we continue to use the previous token in scan order.

This helps about 0.9% on derf after re-training on a limited data set.
Full re-training and results on larger-resolution clips are pending.

Note that this commit breaks trellis, so we can probably get further
gains out of it by fixing trellis at some later point.

Change-Id: Iead68e296fc3a105cca746b5e3da9555d6010cfe
2013-03-26 16:46:09 -07:00
Dmitry Kovalev
77c664ade3 Cleaning up rate control code.
Lower case variable names, declaration and initialization on the same line,
removing redundant casts to double.

Change-Id: I7ea3905bed827aa6faac11a78401b85e448b57f9
2013-03-26 11:25:58 -07:00
John Koleszar
441e2eab1b Add an in-loop deringing experiment
Adds a per-frame, strength adjustable, in loop deringing filter. Uses
the existing vp9_post_proc_down_and_across 5 tap thresholded blur
code, with a brute force search for the threshold.

Results almost strictly positive on the YT HD set, either having no
effect or helping PSNR in the range of 1-3% (overall average 0.8%).
Results more mixed for the CIF set, (-0.5 min, 1.4 max, 0.1 avg).
This has an almost strictly negative impact to SSIM, so examining a
different filter or a more balanced search heuristic is in order.

Other test set results pending.

Change-Id: I5ca6ee8fe292dfa3f2eab7f65332423fa1710b58
2013-03-26 08:23:24 -07:00
Deb Mukherjee
49dcc71493 Merge "Modeling default coef probs with distribution" into experimental 2013-03-26 07:13:13 -07:00
Deb Mukherjee
fd18d5dffe Modeling default coef probs with distribution
Replaces the default tables for single coefficient magnitudes with
those obtained from an appropriate distribution. The EOB node
is left unchanged. The model is represeted as a 256-size codebook
where the index corresponds to the probability of the Zero or the
One node. Two variations are implemented corresponding to whether
the Zero node or the One-node is used as the peg. The main advantage
is that the default prob tables will become considerably smaller and
manageable. Besides there is substantially less risk of over-fitting
for a training set.

Various distributions are tried and the one that gives the best
results is the family of Generalized Gaussian distributions with
shape parameter 0.75. The results are within about 0.2% of fully
trained tables for the Zero peg variant, and within 0.1% of the
One peg variant.

The forward updates are optionally (controlled by a macro)
model-based, i.e. restricted to only convey probabilities from the
codebook. Backward updates can also be optionally (controlled by
another macro) model-based, but is turned off by default. Currently
model-based forward updates work about the same as unconstrained
updates, but there is a drop in performance with backward-updates
being model based.

The model based approach also allows the probabilities for the key
frames to be adjusted from the defaults based on the base_qindex of
the frame. Currently the adjustment function is a placeholder that
adjusts the prob of EOB and Zero node from the nominal one at higher
quality (lower qindex) or lower quality (higher qindex) ends of the
range. The rest of the probabilities are then derived based on the
model from the adjusted prob of zero.

Change-Id: Iae050f3cbcc6d8b3f204e8dc395ae47b3b2192c9
2013-03-25 23:43:38 -07:00
Paul Wilkins
99a4939ec3 Merge "Disable zero bin mode boost." into experimental 2013-03-22 10:59:43 -07:00
Paul Wilkins
bfe7666142 Merge "Minor code clean up" into experimental 2013-03-22 10:53:12 -07:00
Paul Wilkins
ec080fa9de Disable zero bin mode boost.
As things stand the zero bin mode boost is hurting somewhat.
In part this seems to be because the boost applied as is
interferes with the rd mode selection loop.

Average gains (derf 0.072, yt 0.243, ythd 0.179 std-hd 0.212%)

Change-Id: Icaecea3908d9a7352370e49b8fa822f2c2c49dc1
2013-03-22 17:43:43 +00:00
Paul Wilkins
815734e5fb Minor code clean up
Change-Id: Ifa864e0acb253b238b03cdeed0fe5d6ee30a45d8
2013-03-22 17:42:45 +00:00
Dmitry Kovalev
56f3a2c663 Code cleanup: lower case variable names.
Renaming Width to width, Height to height and Version to version in
several structs and function signatures.

Change-Id: I084c3f7e747cb2ce3345aff27a3dff9b13a87543
2013-03-20 16:41:30 -07:00
Paul Wilkins
d8ffee4526 Changes to rd error_per_bit calculation.
Specifically changes to retain more precision
especially at low Q through to the point of use.

Change-Id: Ief5f010f2ca4daaabef49520e7edb46c35daf397
2013-03-18 23:07:51 +00:00
Ronald S. Bultje
a5b54d73e4 Merge "Fix ENTROPY_STATS code in vp9_tokenize.c." into experimental 2013-03-18 15:58:33 -07:00
Ronald S. Bultje
b99dce6881 Fix ENTROPY_STATS code in vp9_tokenize.c.
Change-Id: I9b4cb1e2ce6c6a99cffd473ff2fa7579bd318fcd
2013-03-18 15:39:04 -07:00
Yunqing Wang
6344c84c82 Optimize 8x8 idct function
Wrote sse2 functions of vp9_short_idct8x8 and vp9_short_idct10_8x8.
Compared to c version, the sse2 version is 2X faster. The decoder
test didn't show noticeable gain since 8x8 idct doesn't take much
of decoding time (less than 1% in my test).

Change-Id: I56313e18cd481700b3b52c4eda5ca204ca6365f3
2013-03-18 15:34:14 -07:00
John Koleszar
93529bd7c1 Merge "Replace scaling byte with explicit display size" into experimental 2013-03-18 13:02:07 -07:00
John Koleszar
8a3f55f2d4 Replace scaling byte with explicit display size
If the intended display size is different than the size the frame is
coded at, then send that size explicitly in the bitstream. Adds a new
bit to the frame header to indicate whether the extra size fields
are present.

Change-Id: I525c66f22d207efaf1e5f903c6a2a91b80245854
2013-03-18 12:02:20 -07:00
Paul Wilkins
ef179bce61 Merge "Adapt ARNR filter length and strength." into experimental 2013-03-18 12:00:39 -07:00
John Koleszar
c5b317057b Merge "Fix pulsing issue with scaling" into experimental 2013-03-18 11:57:36 -07:00