Commit Graph

1297 Commits

Author SHA1 Message Date
Yunqing Wang
943c6d7172 Optimize add_residual function
Optimized adding diff to predictor, which gave 0.8% decoder
performance gain.

Change-Id: Ic920f0baa8cbd13a73fa77b7f9da83b58749f0f8
2013-03-05 16:27:45 -08:00
Dmitry Kovalev
7f99c3c59a Code cleanup.
Removing redundant 'extern' keywords, fixing formatting and #include order,
code simplification.

Change-Id: I0e5fdc8009010f3f885f13b5d76859b9da511758
2013-03-05 14:12:16 -08:00
Ronald S. Bultje
4209bba462 Merge changes Ifacbf5a0,Ibad7c3dd into experimental
* changes:
  vpxenc: actually report mismatch on stderr.
  Make superblocks independent of macroblock code and data.
2013-03-05 11:17:14 -08:00
Ronald S. Bultje
111ca42133 Make superblocks independent of macroblock code and data.
Split macroblock and superblock tokenization and detokenization
functions and coefficient-related data structs so that the bitstream
layout and related code of superblock coefficients looks less like it's
a hack to fit macroblocks in superblocks.

In addition, unify chroma transform size selection from luma transform
size (i.e. always use the same size, as long as it fits the predictor);
in practice, this means 32x32 and 64x64 superblocks using the 16x16 luma
transform will now use the 16x16 (instead of the 8x8) chroma transform,
and 64x64 superblocks using the 32x32 luma transform will now use the
32x32 (instead of the 16x16) chroma transform.

Lastly, add a trellis optimize function for 32x32 transform blocks.

HD gains about 0.3%, STDHD about 0.15% and derf about 0.1%. There's
a few negative points here and there that I might want to analyze
a little closer.

Change-Id: Ibad7c3ddfe1acfc52771dfc27c03e9783e054430
2013-03-04 16:34:36 -08:00
Yunqing Wang
37932d9168 Merge "Optimize vp9_short_idct4x4llm function" into experimental 2013-03-04 14:13:31 -08:00
Yunqing Wang
e8bc9f4220 Optimize vp9_short_idct4x4llm function
Wrote a SSE2 vp9_short_idct4x4llm to improve the decoder
performance.

Change-Id: I90b9d48c4bf37aaf47995bffe7e584e6d4a2c000
2013-03-04 12:01:27 -08:00
Jingning Han
5957b2b514 Support 16K sequence coding
Fixed a couple of variable/function definitions, as well as header
handling to support 16K sequence coding at high bit-rates.

The width and height are each specified by two bytes in the header.
Use an extra byte to explicitly indicate the scaling factors in
both directions, each ranging from 0 to 15.

Tested coding up to 16400x16400 dimension.

Change-Id: Ibc2225c6036620270f2c0cf5172d1760aaec10ec
2013-03-04 11:08:41 -08:00
John Koleszar
69c67c9531 Merge master branch into experimental
Picks up some build system changes, compiler warning fixes, etc.

Change-Id: I2712f99e653502818a101a72696ad54018152d4e
2013-03-01 11:06:05 -08:00
Yunqing Wang
c550bb3b09 Add eob<=10 case in idct32x32
Simplified idct32x32 calculation when there are only 10 or less
non-zero coefficients in 32x32 block. This helps the decoder
performance.

Change-Id: If7f8893d27b64a9892b4b2621a37fdf4ac0c2a6d
2013-02-28 16:40:29 -08:00
Yunqing Wang
72b146690a Merge "Refactor vp9_dequant_idct_add function" into experimental 2013-02-28 14:34:27 -08:00
Yunqing Wang
6193bc3ba8 Refactor vp9_dequant_idct_add function
Provided a wrapper and removed duplicate code.

Change-Id: Iaef842226ec348422e459202793b001d0983ea30
2013-02-28 14:18:46 -08:00
Scott LaVarnway
aa8fb070b8 Removed vp9_dequantize_b
Change-Id: Ie89bd00d58e30bf4094cb748a282f1dfa81a31d8
2013-02-28 14:08:12 -08:00
Dmitry Kovalev
c43906e2e9 Dequantization code cleanup.
Removing redundant variables, using x *= y instead x = x * y, moving
variable declarations into inner blocks.

Change-Id: I884f95c755f55d51b7c1c6585f10296919063e41
2013-02-28 13:28:05 -08:00
Dmitry Kovalev
9d771f948f Merge "Motion vectors code cleanup." into experimental 2013-02-27 13:34:56 -08:00
Yunqing Wang
bbc7b6a86a Merge "Remove unused file" into experimental 2013-02-27 13:00:10 -08:00
Dmitry Kovalev
0c0de00217 Motion vectors code cleanup.
Fixing indentation, removing redundant parenthesis, deciphering single
letter variable names, better spacing.

Change-Id: I1d447a7d69eddbf1e94e0820423615f40ea2d591
2013-02-27 11:48:13 -08:00
Ronald S. Bultje
90932399b4 Merge "Move eob from BLOCKD to MACROBLOCKD." into experimental 2013-02-27 11:39:16 -08:00
Yunqing Wang
8092aaf9ec Merge "Optimize vp9_dc_only_idct_add_c function" into experimental 2013-02-27 11:38:45 -08:00
Yunqing Wang
bf6cca44ad Remove unused file
Removed vp9/decoder/x86/vp9_idct_blk_mmx.c

Change-Id: I07ab06382a394cf556fa5a8e3c98b91f6e4f9ce8
2013-02-27 11:13:19 -08:00
Ronald S. Bultje
e8c74e2b70 Move eob from BLOCKD to MACROBLOCKD.
Consistent with VP8.

Change-Id: I8c316ee49f072e15abbb033a80e9c36617891f07
2013-02-27 11:00:55 -08:00
John Koleszar
77f88e97fa Combined motion compensation with scaled predictors
This patch extends the previous support for using references of a
different resolution in ZEROMV mode to all inter prediction modes.
Subpixel based best-mv scoring is disabled when the reference frame
differs in resolution from the current frame.

Change-Id: Id4dc3e5e6692de98d9857fd56bfad3ac57e944ac
2013-02-27 08:22:39 -08:00
John Koleszar
eb939f45b8 Spatial resamping of ZEROMV predictors
This patch allows coding frames using references of different
resolution, in ZEROMV mode. For compound prediction, either
reference may be scaled.

To test, I use the resize_test and enable WRITE_RECON_BUFFER
in vp9_onyxd_if.c. It's also useful to apply this patch to
test/i420_video_source.h:

  --- a/test/i420_video_source.h
  +++ b/test/i420_video_source.h
  @@ -93,6 +93,7 @@ class I420VideoSource : public VideoSource {

     virtual void FillFrame() {
       // Read a frame from input_file.
  +    if (frame_ != 3)
       if (fread(img_->img_data, raw_sz_, 1, input_file_) == 0) {
         limit_ = frame_;
       }

This forces the frame that the resolution changes on to be coded
with no motion, only scaling, and improves the quality of the
result.

Change-Id: I1ee75d19a437ff801192f767fd02a36bcbd1d496
2013-02-26 23:54:23 -08:00
Ronald S. Bultje
96d260515a Merge "Merge cnvcontext experiment." into experimental 2013-02-26 19:39:39 -08:00
Yunqing Wang
35bc02c6eb Optimize vp9_dc_only_idct_add_c function
Wrote SSE2 version of vp9_dc_only_idct_add_c function. In order to
improve performance, clipped the absolute diff values to [0, 255].
This allowed us to keep the additions/subtractions in 8 bits.
Test showed an over 2% decoder performance increase.

Change-Id: Ie1a236d23d207e4ffcd1fc9f3d77462a9c7fe09d
2013-02-26 17:16:13 -08:00
John Koleszar
25686fc22d Merge "Refactor inter recon functions to support scaling" into experimental 2013-02-26 11:45:28 -08:00
Ronald S. Bultje
b1641150b1 Merge cnvcontext experiment.
Change-Id: I35e64998b25694a3bb4a62164bba3c03c1db4bc7
2013-02-26 10:40:15 -08:00
John Koleszar
6a4f708c25 Refactor inter recon functions to support scaling
Ensure that all inter prediction goes through a common code path
that takes scaling into account. Removes a bunch of duplicate
1st/2nd predictor code. Also introduces a 16x8 mode for 8x8
MVs, similar to the 8x4 trick we were doing before. This has an
unexpected effect with EIGHTTAP_SMOOTH, so it's disabled in that
case for now.

Change-Id: Ia053e823a8bc616a988a0af30452e1e75a739cba
2013-02-26 10:03:29 -08:00
Dmitry Kovalev
9bf3f75168 Changing pitch value meaning for fht and iht transforms.
Pitch now means the number of elements, not the number of bytes.

Change-Id: Idb9f2f012e39b09d596a3cc1802305a80b7c13af
2013-02-25 18:19:55 -08:00
Dmitry Kovalev
ab196b7e9b Code cleanup.
Lower case names of variables. Removing redundant spaces, parentheses,
casts, and variables.

Change-Id: I55b80c55b7d5adca44c1e8adb40a124c0680f229
2013-02-25 13:33:56 -08:00
Jingning Han
77a3becf92 clean up forward and inverse hybrid transform
Rebased.

Remove the old matrix multiplication transform computation. The 16x16
ADST/DCT can be switched on/off and evaluated by setting ACTIVE_HT16
300/0 in vp9/common/vp9_blockd.h.

Change-Id: Icab2dbd18538987e1dc4e88c45abfc4cfc6e133f
2013-02-25 09:16:12 -08:00
Ronald S. Bultje
0c9e2e9a1d Split coefficient token tables intra vs. inter.
Change-Id: I5416455f8f129ca0f450d00e48358d2012605072
2013-02-23 07:33:46 -08:00
Paul Wilkins
c17672a33d Further changes to coefficient contexts.
This patch alters the balance of context between the
coefficient bands (reflecting the position of coefficients
within a transform blocks) and the energy of the previous
token (or tokens) within a block.

In this case the number of coefficient bands is reduced
but more previous token energy bands are supported.

Some initial rebalancing of the default tables has been
by running multiple derf clips at multiple data rates using
the ENTOPY_STATS macro. Further balancing needs to be
done using larger image formatsd especially in regard to
the bigger transform sizes which are not as well represented
in encodings of smaller image formats.

Change-Id: If9736e95c391e711b04aef6393d26f60f36e1f8a
2013-02-23 07:29:09 -08:00
Dmitry Kovalev
548b4dd5f2 Code cleanup.
Removing redundant 'extern' keywords and parentheses, fixing indentation,
making variable names lower case, using short expressions x *= c
instead of x = x * c, minor code simplifications.

Change-Id: If6a25fcf306d1db26e90d27e3c24a32735c607de
2013-02-22 11:03:14 -08:00
Dmitry Kovalev
5a18106fb7 Code cleanup.
Removing redundant 'extern' keywords. Moving VP9DX_BOOL_DECODER from .h
to .c file.

Change-Id: I5a3056cb3d33db7ed3c3f4629675aa8e21014e66
2013-02-21 13:50:15 -08:00
Ronald S. Bultje
35524e2231 Remove "eobs" array in MACROBLOCKD.
The information is a duplicate of "eob" in BLOCKD.

Change-Id: Ia6416273bd004611da801e4bfa6e2d328d6f02a3
2013-02-21 10:07:36 -08:00
Yaowu Xu
d262e26cc7 Merge lossless experiment
Change-Id: I7b7b8d4fda3a23699e0c920d727f8c15d37d43aa
2013-02-20 07:54:28 -08:00
Yaowu Xu
6b1b341774 Merge "fixed an enc/dec mis-match issue" into experimental 2013-02-19 16:53:30 -08:00
Yaowu Xu
b13f38d4b3 fixed an enc/dec mis-match issue
The issue was caused by a out-of-order merge, which leads to wrong
functions are called at lossless mode.

Change-Id: If157729abab62954c729e0377e7f53edb7db22ca
2013-02-19 16:26:27 -08:00
Jingning Han
cd907b1601 16x16 butterfly inverse ADST/DCT hybrid transform
rebased.

This patch includes 16x16 butterfly inverse ADST/DCT hybrid
transform. It uses the variant ADST of kernel
    sin((2k+1)*(2n+1)/4N),
which allows a butterfly implementation.

The coding gains as compared to DCT 16x16 are about 0.1% for
both derf and std-hd. It is noteworthy that for std-hd sets
many sequences gains about 0.5%, some 0.2%. There are also few
points that provides -1% to -3% performance. Hence the average
goes to about 0.1%.

Change-Id: Ie80ac84cf403390f6e5d282caa58723739e5ec17
2013-02-19 09:07:00 -08:00
Ronald S. Bultje
6cde1c58d7 Remove some unused structs and members from the decoder.
Change-Id: Ie309cb1f683a51c5dfac405fb32e8e2d6ee143ed
2013-02-15 14:06:30 -08:00
Ronald S. Bultje
3af36ea8cc Remove Y2 and Y-no-DC token types from the bitstream.
Change-Id: I7a5314daca993d46b8666ba1ec2ff3766c1e5042
2013-02-15 14:06:30 -08:00
Ronald S. Bultje
48598e30b1 Remove y2dc/ac Q delta values from the bitstream.
Since there is no Y2, these values are always zero. This changes the
bitstream results slightly, hence a separate commit.

Change-Id: I2f838f184341868f35113ec77ca89da53c4644e0
2013-02-15 14:06:30 -08:00
Ronald S. Bultje
46dff5d233 Remove some Y2-related code.
Change-Id: I4f46d142c2a8d1e8a880cfac63702dcbfb999b78
2013-02-15 14:06:25 -08:00
Scott LaVarnway
ae886d6bff Moved vp9_get_coef_band to header file
allowing the compiler to inline.

Change-Id: I66e5caf5e7fefa68a223ff0603aa3f9e11e35dbb
2013-02-14 12:27:25 -08:00
Paul Wilkins
45712dc8c8 Merge "Abstract selection of coef band." into experimental 2013-02-14 03:23:31 -08:00
Ronald S. Bultje
51afedbe28 Merge "Remove 2nd-order transform for first-order DC coefficients." into experimental 2013-02-13 13:58:02 -08:00
Ronald S. Bultje
89a206ef2f Add support for tile rows.
These allow sending partial bitstream packets over the network before
encoding a complete frame is completed, thus lowering end-to-end
latency. The tile-rows are not independent.

Change-Id: I99986595cbcbff9153e2a14f49b4aa7dee4768e2
2013-02-13 12:31:00 -08:00
Ronald S. Bultje
42d6be8080 Remove 2nd-order transform for first-order DC coefficients.
Since addition of the larger-scale transforms (16x16, 32x32), these
don't give a benefit at macroblock-sizes anymore. At superblock-sizes,
2nd-order transform was never used over the larger transforms. Future
work should test whether there is a benefit for that use case.

Change-Id: I90cadfc42befaf201de3eb0c4f7330c56e33330a
2013-02-13 12:28:19 -08:00
Paul Wilkins
9255ad107f Abstract selection of coef band.
This patch abstracts the selection of the coefficient band
context into a function as a precursor to further experiments
with the coefficient context.

It also removes the large per TX size coefficient band structures
and uses a single matrix for all block sizes within the test function.

This may have an impact on quality (results to follow) but is only an
intermediate step in the process of redefining the context. Also the
quality impact will be larger initially because the default tables will
be out of step with the new banding.

In particular the 4x4 will in this case only use 7 bands. If needed we
can add back block size dependency localized within the function, but
this can follow on after the other changes to the definition of the
context.

Change-Id: Id7009c2f4f9bb1d02b861af85fd8223d4285bde5
2013-02-13 19:01:25 +00:00
Paul Wilkins
0d284ffed1 Abstract the selection of coefficient context.
This is an initial step to facilitate experimentation
with changes to the prior token context used to code
coefficients to take better account of the energy of
preceding tokens.

This patch merely abstracts the selection of context into
two functions and does not alter the output.

Change-Id: I117fff0b49c61da83aed641e36620442f86def86
2013-02-13 18:56:30 +00:00
Paul Wilkins
afa57bfc97 Merge "Remove NEWCOEFCONTEXT experiment." into experimental 2013-02-13 10:41:13 -08:00
Yaowu Xu
f01b08c96c Merge "enable bitstream lossless support" into experimental 2013-02-13 10:26:58 -08:00
Yaowu Xu
d3de97794f Merge "fix the lossless experiment" into experimental 2013-02-13 09:54:35 -08:00
Yaowu Xu
17db5d00be enable bitstream lossless support
1. Added a bit in frame header to  to indicate if a frame is encoded
in lossless mode, so decoder does not make the decision based on Q0
2. Minor changes to make sure that lossy coding works same as when
the lossless experiment is not enabled.
3. Renamed function pointers for transforms to be consistent, using
prefix fwd_txm and inv_txm for forward and inverse respectively

To encode in lossless mode, using "--lossless=1 --min-q=0 --max-q=0"
with vpxenc.

Change-Id: Ifae53b26d2ffbe378d707e29d96817b8a5e6c068
2013-02-13 09:24:39 -08:00
Yaowu Xu
16f25f9dc8 fix the lossless experiment
Change-Id: I95acfc1417634b52d344586ab97f0abaa9a4b256
2013-02-13 09:20:26 -08:00
Paul Wilkins
6a9f0c61a4 Remove NEWCOEFCONTEXT experiment.
Removal of the  NEWCOEFCONTEXT experiment to
reduce code clutter and make it easier to experiment with
some other changes to the coefficient coding context.

Change-Id: Icd17b421384c354df6117cc714747647c5eb7e98
2013-02-13 15:12:17 +00:00
Paul Wilkins
649be94cf0 Removal of Hybrid DWT/DCT experiment.
Removal of experiment to simplify code base for other
changes.

Change-Id: If0a33952504558511926ad212bc311fc2bffb19a
2013-02-13 15:08:48 +00:00
John Koleszar
1d60b6bcb5 Merge "Replace as_mv struct with array" into experimental 2013-02-12 13:59:04 -08:00
Ronald S. Bultje
f496f601fb Add tile column size limits (256 pixels min, 4096 pixels max).
This is after discussion with the hardware team. Update the unit test
to take these sizes into account. Split out some duplicate code into
a separate file so it can be shared.

Change-Id: I8311d11b0191d8bb37e8eb4ac962beb217e1bff5
2013-02-12 10:33:34 -08:00
Ronald S. Bultje
491d095214 Clean up detokenize contextualization to be like tokenizer.
Change-Id: I47174f797df2103da8913c6fb4f4e741817bae82
2013-02-11 17:21:37 -08:00
Jingning Han
57e995ff9c butterfly inverse 4x4 ADST
fixed format issues.

Implement the inverse 4x4 ADST using 9 multiplications. For this
particular dimension, the original ADST transform can be
factorized into simpler operations, hence is retained.

Change-Id: Ie5d9749942468df299ab74e90d92cd899569e960
2013-02-11 10:42:39 -08:00
Paul Wilkins
e4f949b55a Merge "Nearest / Zero Mv default entropy tweak." into experimental 2013-02-09 04:21:08 -08:00
John Koleszar
7ca517f755 Replace as_mv struct with array
Replace as_mv.{first, second} with a two element array, so that they
can easily be processed with an index variable.

Change-Id: I1e429155544d2a94a5b72a5b467c53d8b8728190
2013-02-08 20:23:35 -08:00
John Koleszar
6dfc95fe63 Merge changes Icd1a2a5a,I204d17a1,I3ed92117 into experimental
* changes:
  Initial support for resolution changes on P-frames
  Avoid allocating memory when resizing frames
  Adds a test for the VP8E_SET_SCALEMODE control
2013-02-08 14:20:05 -08:00
John Koleszar
393b485627 Initial support for resolution changes on P-frames
Allows inter-frames to change resolution. Currently these are
almost equivalent to keyframes, as only intra prediction modes
are allowed, but without the other context resets that occur on
keyframes.

Change-Id: Icd1a2a5af0d9462cc792588427b0a1f5b12e40d3
2013-02-08 12:20:30 -08:00
Paul Wilkins
bbede82f24 Nearest / Zero Mv default entropy tweak.
Tweak to default mode context to account for the fact
that when there are no non zero motion candidates
Nearest is now the preferred mode for coding a 0,0
vector.

Also resolve duplicate function name and typos.

Change-Id: I76802788d46c84e3d1c771be216a537ab7b12817
2013-02-08 10:16:13 +00:00
Jingning Han
d15e1da494 Butterfly ADST based hybrid transform
Refactor the 8x8 inverse hybrid transform. It is now consistent
with the new inverse DCT. Overall performance loss (due to the
use of this variant ADST, and the rounding errors in the butterfly
implementation) for std-hd is -0.02.

Fixed BUILD warning.

Devise a variant of the original ADST, which allows butterfly
computation structure. This new transform has kernel of the
form: sin((2k+1)*(2n+1) / (4N)). One of its butterfly structures
using floating-point multiplications was reported in Z. Wang,
"Fast algorithms for the discrete W transform and for the discrete
Fourier transform", IEEE Trans. on ASSP, 1984.

This patch includes the butterfly implementation of the inverse
ADST/DCT hybrid transform of dimension 8x8.

Change-Id: I3533cb715f749343a80b9087ce34b3e776d1581d
2013-02-07 10:07:46 -08:00
Ronald S. Bultje
1407bdc243 [WIP] Add column-based tiling.
This patch adds column-based tiling. The idea is to make each tile
independently decodable (after reading the common frame header) and
also independendly encodable (minus within-frame cost adjustments in
the RD loop) to speed-up hardware & software en/decoders if they used
multi-threading. Column-based tiling has the added advantage (over
other tiling methods) that it minimizes realtime use-case latency,
since all threads can start encoding data as soon as the first SB-row
worth of data is available to the encoder.

There is some test code that does random tile ordering in the decoder,
to confirm that each tile is indeed independently decodable from other
tiles in the same frame. At tile edges, all contexts assume default
values (i.e. 0, 0 motion vector, no coefficients, DC intra4x4 mode),
and motion vector search and ordering do not cross tiles in the same
frame.
t log

Tile independence is not maintained between frames ATM, i.e. tile 0 of
frame 1 is free to use motion vectors that point into any tile of frame
0. We support 1 (i.e. no tiling), 2 or 4 column-tiles.

The loopfilter crosses tile boundaries. I discussed this briefly with Aki
and he says that's OK. An in-loop loopfilter would need to do some sync
between tile threads, but that shouldn't be a big issue.

Resuls: with tiling disabled, we go up slightly because of improved edge
use in the intra4x4 prediction. With 2 tiles, we lose about ~1% on derf,
~0.35% on HD and ~0.55% on STD/HD. With 4 tiles, we lose another ~1.5%
on derf ~0.77% on HD and ~0.85% on STD/HD. Most of this loss is
concentrated in the low-bitrate end of clips, and most of it is because
of the loss of edges at tile boundaries and the resulting loss of intra
predictors.

TODO:
- more tiles (perhaps allow row-based tiling also, and max. 8 tiles)?
- maybe optionally (for EC purposes), motion vectors themselves
  should not cross tile edges, or we should emulate such borders as
  if they were off-frame, to limit error propagation to within one
  tile only. This doesn't have to be the default behaviour but could
  be an optional bitstream flag.

Change-Id: I5951c3a0742a767b20bc9fb5af685d9892c2c96f
2013-02-05 15:43:03 -08:00
Scott LaVarnway
5780c4cbd5 Added vp9_short_idct1_32x32_c
and called this function in vp9_dequant_idct_add_32x32_c when
eob == 1.  For the test clip used, the decoder performance improved
by 21+%.  Based on Yaowu's 16 point idct work.

Change-Id: Ib579a90fed531d45777980e04bf0c9b23c093c43
2013-02-04 16:49:17 -08:00
Yaowu Xu
1eb79dc1dc re-write 8 point idct
to be consistent with idct16 and idct32.

Change-Id: Ie89dbd32b65c33274b7fecb4b41160fcf1962204
2013-02-04 07:31:25 -08:00
Yaowu Xu
af4c9d2f88 Merge "Changes 16 point idct" into experimental 2013-02-01 08:22:20 -08:00
Yaowu Xu
91e0e80142 Changes 16 point idct
This commit changes the inverse 16 point dct to use the same algorithm
as the one for 32 point idct. In fact, now 16 point dct uses the exact
version of the souce code for even portion of the 32 point idct.

Tests showed current implementation has significant better accuracy
than the previous version. With this implementation and the minor bug
fix on forward 16 point dct, encoding tests showed about 0.2% better
compression of CIF set, test results on std-hd setting pending.

Change-Id: I68224b60c816ba03434e9f08bee147c7e344fb63
2013-01-31 19:52:18 -08:00
Deb Mukherjee
a53be60904 Merge "Adding a frame parallel decoding mode" into experimental 2013-01-30 12:03:45 -08:00
Ronald S. Bultje
3a4b18bc67 don't code the branch for the predicted seg_id if that flag is false.
Change-Id: Icb6e21dc0c2d9918faa33c8bf70943660df7ad88
2013-01-30 09:30:46 -08:00
Ronald S. Bultje
2f6fce3e5a Write only visible area (for better comparison with rec.yuv).
Change-Id: I32bf4ee532a15af78619cbcd8a193224029fab50
2013-01-29 16:58:52 -08:00
Paul Wilkins
5d1c62c639 Merge "Segment Skip Flag" into experimental 2013-01-29 09:29:26 -08:00
Paul Wilkins
0ff9b033b0 Segment Skip Flag
First step in simplifying the segment mode and
segment EOB flags into a simpler segment skip
flag that implies 0,0 mv and EOB at position 0.

Change-Id: Ib750cac31a7a02dc21082580498efd9f7d8d72a5
2013-01-28 17:28:04 +00:00
Deb Mukherjee
dfd89f2eab Adding a frame parallel decoding mode
Adds a flag to disable features that would inhibit frame parallel
decoding. This includes backward adaptation and MV sorting based
on search in ref frame buffer.

Also includes some minor clean-ups.

Change-Id: I434846717a47b7bcb244b37ea670c5cdf776f14d
2013-01-25 17:16:19 -08:00
Scott LaVarnway
9d4c26531b Added eob == 0 check to vp9_dequant_idct_add_32x32_c
Added a quick eob == 0 check.  Once the integer version of the dct32x32 is
complete, we can check for other eob cases.

For the 1080p clip used, the decoder performance improved by 4%.

Change-Id: I9390b6ed3c8be0c0c0a0c44c578d9a031d6e026e
2013-01-24 17:09:56 -08:00
Deb Mukherjee
01cafaab1d Adds an error-resilient mode with test
Adds an error-resilient mode where frames can be continued
to be decoded even when there are errors (due to network losses)
on a prior frame. Specifically, backward updates are turned off
and probabilities of various symbols are reset to defaults at
the beginning of each frame. Further, the last frame's mvs are
not used for the mv reference list, and the sorting of the
initial list based on search on previous frames is turned off
as well.

Also adds a test where an arbitrary set of frames are skipped
from decoding to simulate errors. The test verifies (1) that if
the error frames are droppable - i.e. frame buffer updates have
been turned off - there are no mismatch errors for the remaining
frames after the error frames; and (2) if the error-frames are non
droppable, there are not only no decoding errors but the mismatch
PSNR between the decoder's version of the post-error frames and the
encoder's version is at least 20 dB.

Change-Id: Ie6e2bcd436b1e8643270356d3a930e8989ff52a5
2013-01-23 21:56:15 -08:00
Frank Galligan
9ca907b53e libvpx: Fix some warnings.
Change-Id: If8be8b9d28a29631f29c46daea8a226ab3580610
2013-01-18 09:51:57 -08:00
John Koleszar
26bd81b955 Preserve the previous golden frame on golden updates
This commit restores the quality lost when the buffer-to-buffer copy
logic was removed. Note that this is specific to the current use of
golden frames and will need rework when RTC functionality is added.

Change-Id: I7324a75acd96eafd9e0f9b8633d782e390d5dc21
2013-01-16 15:57:02 -08:00
John Koleszar
4b65837bc6 Generalize and increase frame coding contexts
Previously there were two frame coding contexts tracked, one for normal
frames and one for alt-ref frames. Generalize this by signalling the
context to use in the bitstream, rather than tieing it to the alt ref
refresh bit. Also increase the number of contexts available to 4, which
may be useful for temporal scalability.

Change-Id: I7b66daaddd55c535c20cd16713541fab182b1662
2013-01-16 14:07:27 -08:00
John Koleszar
da832a80e4 Start to anonymize reference frames
Remove lst_fb_idx, gld_fb_idx, alt_fb_idx, refresh_last_frame,
refresh_golden_frame, refresh_alt_ref_frame from common. Gold/Alt are
encode side conventions. From the decoder's perspective, we want to be
dealing with numbered references.

Updates to active_ref 2 signal mode context switches, vestigial from
refresh_alt_ref_frame. This needs some clean up to make sense with
increased numbers of reference frames, as well as reimplementing the
swapping of alt/golden which was previously done using the
buffer-to-buffer copy mechanism removed in an earlier commit.

Change-Id: I7334445158b7666f9295d2a2dd22aa03f4485f58
2013-01-16 14:06:23 -08:00
John Koleszar
394b0a6a30 Update encoder to use fb_idx_ref_cnt
Do reference counting the same way on the encoder as the decoder does,
rather than maintaining the 'flags' member of YV12_BUFFER_CONFIG.

Change-Id: I91dc210ffca081acaf9d5c09a06e7461b3c3139c
2013-01-15 17:36:39 -08:00
John Koleszar
b8e027989f Remove buffer-to-buffer copy logic
This is the first in a series of commits to add additional reference
frames to the codec. Each frame will be able to update any of the
available references, but copying between references is not
supported.

Change-Id: I5945b5ce6cc3582c495102b4e7eed4f08c44d5a1
2013-01-15 17:36:39 -08:00
Ronald S. Bultje
c9071601a2 Remove compound intra-intra experiment.
This experiment gives little gains and adds relatively much code
complexity (and it hinders other experiments), so let's get rid of
it.

Change-Id: Id25e79a137a1b8a01138aa27a1fa0ba4a2df274a
2013-01-14 15:47:25 -08:00
Ronald S. Bultje
aa2effa954 Merge tx32x32 experiment.
Change-Id: I615651e4c7b09e576a341ad425cf80c393637833
2013-01-10 08:23:59 -08:00
Ronald S. Bultje
6884a83f06 Merge superblocks64 experiment.
Change-Id: If6c88752dffdb566f8d4322f135145270716fb8e
2013-01-09 17:21:40 -08:00
Adrian Grange
7d6b5425d7 New prediction filter
This patch removes the old pred-filter experiment and replaces it
with one that is implemented using the switchable filter framework.

If the pred-filter experiment is enabled, three interopolation
filters are tested during mode selection; the standard 8-tap
interpolation filter, a sharp 8-tap filter and a (new) 8-tap
smoothing filter.

The 6-tap filter code has been preserved for now and if the
enable-6tap experiment is enabled (in addition to the pred-filter
experiment) the original 6-tap filter replaces the new 8-tap smooth
filter in the switchable mode.

The new experiment applies the prediction filter in cases of a
fractional-pel motion vector. Future patches will apply the filter
where the mv is pel-aligned and also to intra predicted blocks.

Change-Id: I08e8cba978f2bbf3019f8413f376b8e2cd85eba4
2013-01-09 12:00:39 -08:00
Ronald S. Bultje
4455036cfc Merge superblocks (32x32) experiment.
Change-Id: I0df99742029834a85c4933652b0587cf5b6b2587
2013-01-08 12:54:45 -08:00
John Koleszar
879cb7d962 Merge vp9-preview changes into experimental branch
Incorportate vp9-preview changes by merging master branch into experimental.

Conflicts:
	test/test.mk
	vp9/common/vp9_filter.c
	vp9/common/vp9_idctllm.c
	vp9/common/vp9_invtrans.h
	vp9/common/vp9_mbpitch.c
	vp9/common/vp9_rtcd_defs.sh
	vp9/common/vp9_systemdependent.h
	vp9/common/vp9_type_aliases.h
	vp9/common/x86/vp9_asm_stubs.c
	vp9/common/x86/vp9_subpixel_mmx.asm
	vp9/decoder/vp9_decodframe.c
	vp9/decoder/vp9_dequantize.c
	vp9/decoder/vp9_dequantize.h
	vp9/decoder/vp9_onyxd_int.h
	vp9/encoder/vp9_bitstream.c
	vp9/encoder/vp9_encodeframe.c
	vp9/encoder/vp9_rdopt.c

Change-Id: I17f51c3666d1b59cf1a699f87607cbc5d30a87c5
2013-01-08 10:19:59 -08:00
Yaowu Xu
c14439c3d3 reset segement map on key frame
This is to fix a decoder crash when decoder skips a number of frame to
continue decoding from a later key frame.

Change-Id: I3ba116eba6c3440e0528a21f53745f694302e4ad
2013-01-08 08:54:45 -08:00
Yaowu Xu
d278d01836 minor loop filter refactoring and cleanup
This commit did a couple of minor cleanup/refactoring to prepare for
futher loop filter experiments. It merged y_only version of loop filter
function into the regular one, which makes sure that same logic is used
for functions for picking level and for actual loop filtering.

Change-Id: Id10c94dccd45f58e5310bacfdf6ee63cbb60b86f
2013-01-07 16:23:58 -08:00
Ronald S. Bultje
c3941665e9 64x64 blocksize support.
3.2% gains on std/hd, 1.0% gains on hd.

Change-Id: I481d5df23d8a4fc650a5bcba956554490b2bd200
2013-01-05 18:20:25 -08:00
Yunqing Wang
e9c69ab102 Merge "Skip finding best ref_mvs when the mode is ZEROMV" into experimental 2013-01-02 11:45:19 -08:00
Paul Wilkins
313d1100af Added update-able mv-ref probabilities.
Part of NEW_MVREF experiment.
Added update-able probabilities.

Change-Id: I5a4fcf4aaed1d0d1dac980f69d535639a3d59401
2013-01-02 14:22:11 +00:00
Yunqing Wang
0f4de1573a Skip finding best ref_mvs when the mode is ZEROMV
Read mode before calling vp9_find_best_ref_mvs(). If the mode is
ZEROMV, the best ref_mvs are not needed. Then, we can skip calling
vp9_find_best_ref_mvs().

Change-Id: I5baa3658dd3f1c7107211cbbbcf919b4584be2e2
2012-12-27 16:18:53 -08:00
John Koleszar
5ebe94f9f1 Build fixes to merge vp9-preview into master
Various fixups to resolve issues when building vp9-preview under the more stringent
checks placed on the experimental branch.

Change-Id: I21749de83552e1e75c799003f849e6a0f1a35b07
2012-12-26 11:21:09 -08:00
Deb Mukherjee
08f0c7cc9c New previous coef context experiment
Adds an experiment to derive the previous context of a coefficient
not just from the previous coefficient in the scan order but from a
combination of several neighboring coefficients previously encountered
in scan order.  A precomputed table of neighbors for each location
for each scan type and block size is used. Currently 5 neighbors are
used.

Results are about 0.2% positive using a strategy where the max coef
magnitude from the 5 neigbors is used to derive the context.

Change-Id: Ie708b54d8e1898af742846ce2d1e2b0d89fd4ad5
2012-12-19 18:49:39 -08:00
John Koleszar
05ec800ea4 Use boolcoder API instead of inlining
This patch changes the token packing to call the bool encoder API rather
than inlining it into the token packing function, and similarly removes
a special get_signed case from the detokenizer. This allows easier
experimentation with changing the bool coder as a whole.

Change-Id: I52c3625bbe4960b68cfb873b0e39ade0c82f9e91
2012-12-19 12:52:41 -08:00
Ronald S. Bultje
4cca47b538 Use standard integer types for pixel values and coefficients.
For coefficients, use int16_t (instead of short); for pixel values in
16-bit intermediates, use uint16_t (instead of unsigned short); for all
others, use uint8_t (instead of unsigned char).

Change-Id: I3619cd9abf106c3742eccc2e2f5e89a62774f7da
2012-12-18 15:31:19 -08:00
Yaowu Xu
b41c3583ac Merge "correct logic in cnvcontext experiment for tx32x32" into experimental 2012-12-18 14:23:39 -08:00
Yaowu Xu
de269c8a62 correct logic in cnvcontext experiment for tx32x32
Change-Id: I004ded11983b7fda85793912ebc5c6f266dc5eb5
2012-12-18 13:53:17 -08:00
Ronald S. Bultje
8986eb5c26 Give 4x4 scan and coef_band tables a _4x4 suffix.
This matches the names of tables for all other transform sizes.

Change-Id: Ia7681b7f8d34c97c27b0eb0e34d490cd0f8d02c6
2012-12-18 10:49:10 -08:00
John Koleszar
1306ba7659 Remove vp9_type_aliases.h
Prefer the standard fixed-size integer typedefs.

Change-Id: Iad75582350669e49a8da3b7facb9c259e9514a5b
2012-12-17 11:32:37 -08:00
Yaowu Xu
6247b239bc reset segement map on key frame
This is to fix a decoder crash when decoder skips a number of frame to
continue decoding from a later key frame.

Change-Id: I3ba116eba6c3440e0528a21f53745f694302e4ad
2012-12-14 06:35:32 -08:00
Deb Mukherjee
7fa3deb1f5 Build fixes with teh super blcoks and 32x32 expts
Change-Id: I3c751f8d57ac7d3b754476dc6ce144d162534e6d
2012-12-13 12:18:38 -08:00
Scott LaVarnway
b575394e21 Improved vp9_ihtllm_c
As suggested by Yaowu, we can use eob to reduce the complexity
of the vp9_ihtllm_c function.  For the 1080p test clip used, the decoder
performance improved by 17%.

Change-Id: I32486f2f06f9b8f60467d2a574209aa3a3daa435
2012-12-12 15:49:39 -08:00
Ronald S. Bultje
39de1e14ed Merge "Consistently use get_prob(), clip_prob() and newly added clip_pixel()." into experimental 2012-12-12 10:34:14 -08:00
Ronald S. Bultje
4d0ec7aacd Consistently use get_prob(), clip_prob() and newly added clip_pixel().
Add a function clip_pixel() to clip a pixel value to the [0,255] range
of allowed values, and use this where-ever appropriate (e.g. prediction,
reconstruction). Likewise, consistently use the recently added function
clip_prob(), which calculates a binary probability in the [1,255] range.
If possible, try to use get_prob() or its sister get_binary_prob() to
calculate binary probabilities, for consistency.

Since in some places, this means that binary probability calculations
are changed (we use {255,256}*count0/(total) in a range of places,
and all of these are now changed to use 256*count0+(total>>1)/total),
this changes the encoding result, so this patch warrants some extensive
testing.

Change-Id: Ibeeff8d886496839b8e0c0ace9ccc552351f7628
2012-12-12 10:01:19 -08:00
Yaowu Xu
0c35b27689 Merge "clean up tokenize_b() and stuff_b()" into experimental 2012-12-11 13:51:56 -08:00
Yaowu Xu
899f0fc126 clean up tokenize_b() and stuff_b()
Change-Id: I0c1be01aae933243311ad321b6c456adaec1a0f5
2012-12-11 13:32:16 -08:00
Yaowu Xu
6b380c0cfa Merge "experiment with CONTEXT conversion" into experimental 2012-12-11 09:46:36 -08:00
Paul Wilkins
d124465975 Further changes to mv reference code.
Some further changes and refactoring of mv
reference code and selection of center point for
searches. Mainly relates to not passing so many
different local copies of things around.

Some place holder comments.

Change-Id: I309f10ffe9a9cde7663e7eae19eb594371c8d055
2012-12-10 17:31:51 +00:00
John Koleszar
d1356faeb8 Merge remote-tracking branch 'origin/vp9-preview' into experimental 2012-12-07 17:26:31 -08:00
Yaowu Xu
ab480cede5 experiment with CONTEXT conversion
This commit changed the ENTROPY_CONTEXT conversion between MBs that
have different transform sizes.

In additioin, this commit also did a number of cleanup/bug fix:
1. removed duplicate function vp9_fix_contexts() and changed to use
vp8_reset_mb_token_contexts() for both encoder and decoder
2. fixed a bug in stuff_mb_16x16 where wrong context was used for
the UV.
3. changed reset all context to 0 if a MB is skipped to simplify the
logic.

Change-Id: I7bc57a5fb6dbf1f85eac1543daaeb3a61633275c
2012-12-07 17:25:45 -08:00
Ronald S. Bultje
fbf052df42 Clean up 4x4 coefficient decoding code.
Don't use vp9_decode_coefs_4x4() for 2nd order DC or luma blocks. The
code introduces some overhead which is unnecessary for these cases.
Also, remove variable declarations that are only used once, remove
magic offsets into the coefficient buffer (use xd->block[i].qcoeff
instead of xd->qcoeff + magic_offset), and fix a few Google Style
Guide violations.

Change-Id: I0ae653fd80ca7f1e4bccd87ecef95ddfff8f28b4
2012-12-07 16:27:07 -08:00
Ronald S. Bultje
885cf816eb Introduce vp9_coeff_probs/counts/stats/accum types.
Use these, instead of the 4/5-dimensional arrays, to hold statistics,
counts, accumulations and probabilities for coefficient tokens. This
commit also re-allows ENTROPY_STATS to compile.

Change-Id: If441ffac936f52a3af91d8f2922ea8a0ceabdaa5
2012-12-07 16:09:59 -08:00
Frank Galligan
8d449ce0a9 Remove unused symbols from vp9 asm offsets C files.
Change-Id: I366e6d175da3012f1c8607fd7fad99fbbb616091
2012-12-07 15:38:40 -08:00
Ronald S. Bultje
c456b35fdf 32x32 transform for superblocks.
This adds Debargha's DCT/DWT hybrid and a regular 32x32 DCT, and adds
code all over the place to wrap that in the bitstream/encoder/decoder/RD.

Some implementation notes (these probably need careful review):
- token range is extended by 1 bit, since the value range out of this
  transform is [-16384,16383].
- the coefficients coming out of the FDCT are manually scaled back by
  1 bit, or else they won't fit in int16_t (they are 17 bits). Because
  of this, the RD error scoring does not right-shift the MSE score by
  two (unlike for 4x4/8x8/16x16).
- to compensate for this loss in precision, the quantizer is halved
  also. This is currently a little hacky.
- FDCT and IDCT is double-only right now. Needs a fixed-point impl.
- There are no default probabilities for the 32x32 transform yet; I'm
  simply using the 16x16 luma ones. A future commit will add newly
  generated probabilities for all transforms.
- No ADST version. I don't think we'll add one for this level; if an
  ADST is desired, transform-size selection can scale back to 16x16
  or lower, and use an ADST at that level.

Additional notes specific to Debargha's DWT/DCT hybrid:
- coefficient scale is different for the top/left 16x16 (DCT-over-DWT)
  block than for the rest (DWT pixel differences) of the block. Therefore,
  RD error scoring isn't easily scalable between coefficient and pixel
  domain. Thus, unfortunately, we need to compute the RD distortion in
  the pixel domain until we figure out how to scale these appropriately.

Change-Id: I00386f20f35d7fabb19aba94c8162f8aee64ef2b
2012-12-07 14:45:05 -08:00
Johann
1009f76566 Use 'vpx_scale' consistently
Change-Id: I178352813d2b8702d081caf405de9dbad9af2cc3
2012-12-05 16:05:44 -08:00
Johann
52d350febf Begin to refactor vpx_scale usage in VP9
Only declare the functions in vpx_scale RTCD and include the relevant
header.

Remove unused files and functions in vpx_scale to avoid wasting time
renaming. vpx_scale/win32/scaleopt.c contains functions which have not
been called in a long time but are potentially optimized.

The 'vp8' functions have not been renamed yet. That is for after the
cleanup.

Change-Id: I2c325a101d60fa9d27e7dfcd5b52a864b4a1e09c
2012-12-05 08:59:40 -08:00
Johann
a905672906 Remove ARM optimizations from VP9
Change-Id: I9f0ae635fb9a95c4aa1529c177ccb07e2b76970b
2012-12-05 08:59:25 -08:00
Johann
c6bd29e2f5 Begin to refactor vpx_scale usage in VP9
Only declare the functions in vpx_scale RTCD and include the relevant
header.

Remove unused files and functions in vpx_scale to avoid wasting time
renaming. vpx_scale/win32/scaleopt.c contains functions which have not
been called in a long time but are potentially optimized.

The 'vp8' functions have not been renamed yet. That is for after the
cleanup.

Change-Id: I2c325a101d60fa9d27e7dfcd5b52a864b4a1e09c
2012-12-03 12:51:56 -08:00
Johann
34591b54dd Remove ARM optimizations from VP9
Change-Id: I9f0ae635fb9a95c4aa1529c177ccb07e2b76970b
2012-12-03 12:50:15 -08:00
Deb Mukherjee
6632330702 Adds switchable filters with superblocks
Allows switchbale filters to be used without mismatch when the
superblock experiment is on.

Also removes a spurious clamping code in decodemv.c which causes
rare encode/decode mismatches.

Change-Id: I809d9ee0b2859552b613500b539a615515b863ae
2012-11-30 09:37:08 -08:00
Jim Bankoski
9f9370425b warnings in various experiments
Change-Id: Ib5106d4772450f8026f823dd743f162ab833b1d6
2012-11-30 07:31:37 -08:00
Jim Bankoski
2b8dc065d1 google style guide include guards
Change-Id: I2c252f3ddcc99e96c1f5d3dab8bcb25a2a3637ea
2012-11-30 07:30:59 -08:00
Deb Mukherjee
d7489ea45e Merge "Minor refactoring of superblock decoding" into experimental 2012-11-29 15:33:42 -08:00
Deb Mukherjee
be08b5af1a Minor refactoring of superblock decoding
Refactoring for improved readability - no bitstream or
performance change.

Change-Id: I4488ed4715f8dbe38c66431106478669041b8b33
2012-11-29 15:26:56 -08:00
Jim Bankoski
51e770deb1 fix implicit warnings idct etc
Change-Id: I54a122cc8c0b6ed2dbc3c6ecfcd44736cd40b687
2012-11-29 11:23:02 -08:00
Jim Bankoski
ef3c01ed67 Additional warning message cleanup.
Change-Id: I429a97ac57db3de0bf67ce3f3fe0c6b409f77a9e
2012-11-29 10:10:51 -08:00
Yaowu Xu
ff2f9de828 Merge changes Iaa67bcf1,Ibea3bc80 into experimental
* changes:
  more warning cleanup
  unused variables & warnings
2012-11-29 09:34:10 -08:00
Yaowu Xu
6431007df3 Merge "minor fix to eob check for setting CONTEXT" into experimental 2012-11-29 09:27:00 -08:00
Yaowu Xu
7ab1d3e49f minor fix to eob check for setting CONTEXT
Previously, the "!=" check is logically incorrect when eob is at 0 and
effective coefficient starting position is 1. This commit should have
no effect on bitstream.

Change-Id: I6ce3a847c7e72bfbe4f7c74f88e3310c6b9b6d30
2012-11-29 09:10:15 -08:00
Jim Bankoski
00b27a3647 more warning cleanup
Change-Id: Iaa67bcf1e866dfe255c4e458d4e51e9c708ffcf4
2012-11-29 09:07:12 -08:00
Jim Bankoski
030e268a90 ihtllm moves to rtcd
clears up some warnings

Change-Id: I9899637497c6ad7519f098e055ab98580ae6d688
2012-11-29 07:19:38 -08:00
Jim Bankoski
13dbf1fb17 more rtcd cleanup
Change-Id: Ieefd76e164ca4aa87597da0412977614ddfbacb7
2012-11-28 17:27:15 -08:00
Deb Mukherjee
0de214260b Merge "Fixing 8x8/4x4 ADST for intra modes with tx select" into experimental 2012-11-28 16:59:17 -08:00
Deb Mukherjee
0742b1e4ae Fixing 8x8/4x4 ADST for intra modes with tx select
This patch allows use of 8x8 and 4x4 ADST correctly for Intra
16x16 modes and Intra 8x8 modes when the block size selected
is smaller than the prediction mode. Also includes some cleanups
and refactoring.

Rebase.

Change-Id: Ie3257bdf07bdb9c6e9476915e3a80183c8fa005a
2012-11-28 16:21:12 -08:00
Yaowu Xu
b2f27d909a Merge "remove the vp9_default_mode_contexts_a" into experimental 2012-11-28 13:56:42 -08:00
Yaowu Xu
1cc5739669 remove the vp9_default_mode_contexts_a
Given the way mode_context is updated, the benefit of an additional
default is not signficant.

Change-Id: I67489453e8781340b18e26a1cc2f04e9221004a2
2012-11-28 11:14:30 -08:00
Jim Bankoski
c67873989f fixed includes to be fully specified
Change-Id: Ia1cce221f8511561b9cbd8edb7726fbc286ff243
2012-11-28 10:53:17 -08:00
John Koleszar
00e2c6bf7a Merge "Clamp decoded feature data" into experimental 2012-11-28 10:08:37 -08:00
Yaowu Xu
3e976bba21 Localize Y2 entropy coding context
This commit makes sure Y2 entropy coding context is always updated on
every macroblock even there is no Y2 block.

Change-Id: Ie307cfc46526efe55613be39f9f178d2531b56ba
2012-11-28 09:27:36 -08:00
Yaowu Xu
12da793d00 removed redundant mode_context data structures
This commit removed a couple of redundant data structures in frame
coding contextsm, mode_context and mode_context_a, and changed to
use vp9_mode_contexts only. The switch of the context for different
frame type now relies on the switch of frame coding context between
lfc and lfc_a. This commit also removed a number of memcpy among
these redundant data structure.

Change-Id: I42e8174bd60f466b0860afc44c1263896471b0f3
2012-11-28 09:24:30 -08:00
John Koleszar
a1f15814be Clamp decoded feature data
Not all segment feature data elements are full-range powers of two, so
there are values that can be encoded that are invalid. Add a new function
to clamp values to the maximum allowed.

Change-Id: Ie47cb80ef2d54292e6b8db9f699c57214a915bc4
2012-11-27 16:38:31 -08:00
John Koleszar
fcccbcbb39 Add vp9_ prefix to all vp9 files
Support for gyp which doesn't support multiple objects in the same
static library having the same basename.

Change-Id: Ib947eefbaf68f8b177a796d23f875ccdfa6bc9dc
2012-11-27 14:12:30 -08:00
Jim Bankoski
f42e41f2ef Merge "removed the idct rtcd idct calls" into experimental 2012-11-24 21:38:36 -08:00
Ronald S. Bultje
25b609b62b Move switch(tx_size) around txsize to detokenize.c.
Add a new function vp9_decode_mb_tokens() that handles the switch
between different per-tx-size detokenize functions. Make actual
implementations (vp9_decode_mb_tokens_NxN()) static.

Change-Id: I9e0c4ef410bfa90128a02b472c079a955776816d
2012-11-24 21:22:42 -08:00
Jim Bankoski
510557e2eb removed the idct rtcd idct calls
More cleanup to do after this,  but this is a good chunk of removing rtcd.

Change-Id: I551db75e341a0a85c3ad650df1e9a60dc305681a
2012-11-24 19:33:58 -08:00
Ronald S. Bultje
9970d8b662 Restructure vp9_decode_mb_tokens_8x8() a bit.
Don't declare variables if they only ever have a single value and are
used only as argument to another function call; instead, just hardcode
the value in the function call directly. Split out UV and Y coefficient
loops for clarity. Use xd->block[].qcoeff instead of xd->qcoeff + magic
to remove use of magic offset variables.

Change-Id: I5b17eda1bb666c69c2b7ea957d5525cd78192e33
2012-11-23 09:43:13 -08:00
Ronald S. Bultje
f090b6b47b Restructure vp9_decode_mb_tokens_16x16() a bit.
Don't declare variables if they only ever have a single value and are
used only as argument to another function call; instead, just hardcode
the value in the function call directly. Also remove unneeded brackets
around a code block, and remove the magic offsets 64 and 256 for chroma
values in the coefficient memory block.

Change-Id: I14fc14120a81ea1d6fb862674e8bf8cf6ba3d114
2012-11-23 09:11:12 -08:00
Ronald S. Bultje
0312c3d6d9 Make get_eob() function static.
Change-Id: Idde3ab97960eda7022367c1f91a873a479bc9d7b
2012-11-23 08:17:06 -08:00
Ronald S. Bultje
4422847143 Rename "block_type" function argument to "txfm_size".
Also fix the type (TX_SIZE instead of int).

Change-Id: Ib9b3f33835e58a6e758ed5f37bb64543e62b6a86
2012-11-23 08:15:00 -08:00
Ronald S. Bultje
a5e542e74b Fix enc/dec mismatch with b_context_pred experiment enabled.
Change-Id: I1272ae3f0fdfb7ed8eb364ef0c6dd1818d3179d7
2012-11-21 12:39:55 -08:00
John Koleszar
414f68d266 Merge "Pack invisible frames without lengths" into experimental 2012-11-20 17:22:50 -08:00
Ronald S. Bultje
5d7cb59035 Assign above/left context in decode_coefs() instead of in caller.
this prevents duplicating the same line of code in each caller of
decode_coefs().

Change-Id: Id7996ad394828bf77ef3d5e03002f577c9f79609
2012-11-17 11:22:38 -08:00
Ronald S. Bultje
3bdf302ce7 Remove unused argument from decode_coefs() function prototype.
Change-Id: I8d2539ba1046012c948520ac23a1f1978be921c5
2012-11-17 11:11:06 -08:00
Ronald S. Bultje
a253b3791b Remove coef_bands_x[] array and related machinery in decode_coefs().
Change-Id: I0a36d1efb3bb81a54005b10316550ec67100559e
2012-11-17 11:07:23 -08:00
Ronald S. Bultje
511ef2072c Inline count_tokens() in decode_coefs().
This prevents the relatively expensive token-from-coefficient lookup
function get_token(), plus a duplicate loop..

Change-Id: Ibecd407b2a91d3593d439ec4646e43fa26d2ff91
2012-11-17 10:35:47 -08:00
Ronald S. Bultje
56352f189d Merge various count_token() functions into a single one.
Change-Id: I1970f43e2cb5f7d9744c7249099eed226f16f162
2012-11-17 10:18:41 -08:00
Ronald S. Bultje
166d24d07e Remove unused function count_tokens() in detokenize.c.
Change-Id: I178f250b1a4d41d5a9c1619091f5ae51cebffb10
2012-11-17 07:45:46 -08:00
Ronald S. Bultje
f19a1cafed Remove special-case inline detokenization in b_pred reconstruction.
Just like for all other block modes, b_pred tokens can be read together
before starting macroblock reconstruction. This removes special cases
for b_pred in decode_macroblock() and allows to make decode_coefs_4x4()
static in detokenize.c.

While at it, remove the redundant handling and checking of plane_type
and block_index (i) in decode_coefs_4x4(). Since the function is static,
and is called only from decode_mb_tokens_4x4(), we don't need to worry
that the arguments ever go out of sync.

Change-Id: I2d415da0b51b89d0490a6b9e24cc86363c2090f7
2012-11-16 22:26:12 -08:00
Yunqing Wang
0eb5590425 Merge "Add const before the dequant(dq)" into experimental 2012-11-16 12:35:17 -08:00
Yunqing Wang
4c7c15ee69 Merge "Optimize 8x8 dequant and idct" into experimental 2012-11-16 12:23:06 -08:00
Yunqing Wang
47d9d48fa4 Add const before the dequant(dq)
Modified code to use const before dq.

Change-Id: I6fa59c2ed9743ded33ad08df70e15c2fe1ae7b99
2012-11-16 12:13:13 -08:00
Ronald S. Bultje
5b11052ac1 Support 32x32 intra modes in non-keyframe superblocks.
Change-Id: Icf8ad313c543462e523bff89690e5daa8d49bcc0
2012-11-16 09:54:43 -08:00
Paul Wilkins
a57dbd957b Further experimentation with the mode context
Experiments with a larger set of contexts and some
clean up to replace magic numbers regarding the
number of contexts.

The starting values and rate of backwards adaption
are still suspect and based on a small set of tests.
Added forwards adjustment of probabilities.

The net result of adding the new context and forward
update is small compared to the old context from the
legacy find_near function.  (down a little on derf but
up by a similar amount for HD)

HOWEVER.... with the new context and forward update
the impact of disabling the reverse update (which may be
necessary in some use cases to facilitate parallel decoding)
is hugely reduced.

For the old context without forward update, the impact of
turning off reverse update (Experiment was with SB off) was
Derf - 0.9, Yt -1.89, ythd -2.75 and sthd -8.35. The impact was
mainly at low data rates.

With the new context and forward update enabled the impact
for all the test sets was no more than 0.5-1% (again most at
the low end).

Change-Id: Ic751b414c8ce7f7f3ebc6f19a741d774d2b4b556
2012-11-16 16:58:00 +00:00
John Koleszar
6bca6decbf Merge "Don't write recon.yuv by default" into experimental 2012-11-16 08:41:40 -08:00
Deb Mukherjee
cb2d06ceac Merge "Compound inter-intra experiment" into experimental 2012-11-16 08:30:34 -08:00
Deb Mukherjee
0c917fc975 Compound inter-intra experiment
A patch on compound inter-intra prediction.

In compound inter-intra prediction, a new predictor for
16x16 inter coded MBs are obtained by combining a single
inter predictor with a 16x16 intra predictor, in a manner
that the weight varies with distance from the top/left
boundary. The current search strategy is to combine the best
inter mode with the best intra mode obtained independently.

Results so far:

derf +0.31%
yt +0.32%
std-hd +0.35%
hd +0.42%

It is conceivable that the results would improve somewhat
with a more thorough search strategy where all intra modes
are searched given the best mv, or even a joint search for
the best mv and the best intra mode.

Change-Id: I7951f1ed0d6eb31ca32ac24d120f1585bcd8d79b
2012-11-16 06:56:29 -08:00
John Koleszar
64bcffc1ec Pack invisible frames without lengths
Modify the decoder to return the ending position of the bool decoder and
use that as the starting position for the next frame.

The constant-space algorithm for parsing the appended frame lengths is
O(n^2), which is a potential DoS concern if n is unbounded. Revisit
the appended lengths for use as partition lengths when multipartition
support is added.

In addition, this allows decoding of raw streams outside of a container
without additional framing information, though it's insufficient to
be able to remux said stream into a container.

Change-Id: I71e801a9c3e37abe559a56a597635b0cbae1934b
2012-11-15 15:48:07 -08:00
John Koleszar
a9c7597adc support building vp8 and vp9 into a single lib
Change-Id: Ib8f8a66c9fd31e508cdc9caa662192f38433aa3d
2012-11-15 10:46:17 -08:00
John Koleszar
6becad426c detokenize: use SEG_LVL_EOB feature consistently
Update decode_coefs() to break when c >= eob, since it's possible that
c starts the loop from 1 and eob is 0. The loop won't terminate in that
case.

Add new get_eob() function to consistently clamp the eob based on the
segment level EOB and the block size. It's possible to code a segment
level EOB that's greater than the block size, and that leads to an
out of bounds access.

Change-Id: I859563b30414615cf1b30dcc2aef8a1de358c42d
2012-11-15 11:44:29 +00:00
pascal massimino
5a955973d9 Merge changes I63348ae3,I658ea409 into experimental
* changes:
  Segment mode coding bug.
  Silenced a few warnings.
2012-11-15 00:24:57 -08:00
Paul Wilkins
19a1ba1e91 Silenced a few warnings.
Silenced a few VS compiler warnings.

Change-Id: I658ea409c36c05cd11042675e2e42ccde0ef2420
2012-11-14 14:27:37 +00:00
John Koleszar
854e41f057 Don't write recon.yuv by default
CONFIG_DEBUG was turning on some code to dump the reconstructed frame
to a buffer from within the decoder. Move this code to a more specific
debugging define.

Change-Id: I3ca9ea634bdbd186f2470bd644d3695ee0ab3037
2012-11-13 15:22:35 -08:00
John Koleszar
6d482706ef SEG_LVL_MODE: don't code ref_frame if it's implicit
If the SEG_LVL_MODE is an intra mode, then the reference frame must be
INTRA_FRAME.

Change-Id: I2cdeeac3780c077c74b39ce89a528bc280674231
2012-11-13 15:22:09 -08:00
Yunqing Wang
e60478d46d Optimize 8x8 dequant and idct
Similar to 16x16 dequant and idct, based on the value of eobs, the
8x8 dequant and idct calculation was simplified to improve decorder
performance.

Combined vp9_dequant_idct_add_8x8 and vp9_dequant_dc_idct_add_8x8
to eliminate duplicate code.

Change-Id: Ia58e50ab27f7012b7379c495837c9c0b5ba9cf7f
2012-11-12 17:41:53 -08:00
Ronald S. Bultje
722972454c Fix edge MV handling in SBs.
Change-Id: Ia1eddb108ec463835e9de8769572d698e21bca49
2012-11-12 17:06:52 -08:00
Paul Wilkins
5d65614fdd Merge "New inter mode context" into experimental 2012-11-12 09:24:14 -08:00
Paul Wilkins
2669f42b0d New inter mode context
This change is a fix / extension of the newbestrefmv
experiment. As such it is presented without IFDEF.

The change creates a new context for coding inter modes
in vp9_find_mv_refs(). This replaces the context that
was previously calculated in vp9_find_near_mvs().
The new context is unoptimized and not necessarily
any better at this stage (results pending), but eliminates
the need for a legacy call to vp9_find_near_mvs().
Based on numbers from Scott, this could help decode
speed by several %.

In a later patch I will add support for forward update of
context (assuming this helps) and refine the context as
necessary.

Change-Id: I1cd991b82c8df86cc02237a34185e6d67510698a
2012-11-12 15:50:02 +00:00
Ronald S. Bultje
dd9d4f9e1a Fix data type for eobs[] array in SB 4x4 IDCT code.
This fixes encoder/decoder mismatches with the superblock experiment
turned on whenever a superblock is encoded using the 4x4 transform.

Change-Id: Iefec7055e8d25f8efdbba66c4261bbd322d335a3
2012-11-10 12:08:27 -08:00
Deb Mukherjee
d01357bbad New b-intra mode where direction is contextual
Preliminary patch on a new 4x4 intra mode B_CONTEXT_PRED where the
dominant direction from the context is used to encode. Various decoder
changes are needed to support decoding of B_CONTEXT_PRED in conjunction
with hybrid transforms since the scan order and tokenization depends on
the actual direction of prediction obtained from the context. Currently
the traditional directional modes are used in conjunction with the
B_CONTEXT_PRED, which also seems to provide the best results.

The gains are small - in the 0.1% range.

Change-Id: I5a7ea80b5218f42a9c0dfb42d3f79a68c7f0cdc2
2012-11-10 07:12:30 -08:00
Deb Mukherjee
3f7182cb0d Build fix in decoder/decodframe.c
Missing eobs agrument in vp9_dequant_idct_add_16x16_c

Change-Id: I826b1afa0a4ee6398f7373325aa0c75e6a866937
2012-11-09 12:48:35 -08:00
Yunqing Wang
71b1885403 Merge "Optimize 16x16 dequant and idct" into experimental 2012-11-09 08:30:53 -08:00
Ronald S. Bultje
1d4fbeb32a Implement tx_select for superblock encoding.
Also split superblock handling code out of decode_macroblock() into
a new function decode_superblock(), for easier readability.

Derf +0.05%, HD +0.2%, STDHD +0.1%. We can likely get further gains
by allowing to select mb_skip_coeff for a subset of the complete SB
or something along those lines, because although this change allows
coding smaller transforms for bigger predictors, it increases the
overhead of coding EOBs to skip the parts where the residual is
near-zero, and thus the overall gain is not as high as we'd expect.

Change-Id: I552ce1286487267f504e3090b683e15515791efa
2012-11-08 11:03:00 -08:00
Yunqing Wang
6c17c9fae0 Optimize 16x16 dequant and idct
As suggested by Yaowu, simplified 16x16 dequant and idct. In decoder,
after detoken step, we know the number of non-zero dct coefficients
(eobs) in a macroblock. Idct calculation can be skipped or simplified
based on eobs, which improves the decoder performance.

Change-Id: I9ffa1cb134bcb5a7d64fcf90c81871a96d1b4018
2012-11-07 20:04:09 -08:00
Yaowu Xu
0cedaa3631 merge full pixel refmv experiment
Change-Id: Ib39ad47a7d188f3b45416937b7eeb28c3e79b74c
2012-11-07 10:52:45 -08:00
Yaowu Xu
8a336b0d0d silent a lot of MSVC compiler warnings
there are still a couple type of warning left, which are related to
double constants assigned to float type. As those would be addressed
by the conversion of transforms into integer version. This commit
has left those un-dealt with.

Change-Id: I48fd9b489c0c27ad6b543f4177423419f929f2bb
2012-11-06 09:09:25 -08:00
Yunqing Wang
28826a913c Merge "Fix eobs data type" into experimental 2012-11-02 16:00:56 -07:00
Yunqing Wang
d41b0e6498 Fix eobs data type
The block sizes for decoding tokens are up to 16x16, which means
eobs is within [0, 256]. Using (signed) char is not enough. Changed
eobs data type to unsigned short to fix the problem.

Change-Id: I88a7d3098e1f1604c336d6adb88ffec971fb03a6
2012-11-02 13:22:29 -07:00
Ronald S. Bultje
3c4f47e843 Place non-static function prototypes in a header file.
Change-Id: I7cd21b9f1e69f4e0b3338bfe27b3c67e4b47de58
2012-11-02 11:22:57 -07:00
John Koleszar
06f3e51da6 vpx_scale: sync from master
Update vpx_scale from current code in master, run style transform, fix
lint warnings.

Change-Id: I47eadeb5b6881d448ea3728537f9b8a5b5aac78e
2012-11-02 08:44:54 -07:00
Ronald S. Bultje
4b2c2b9aa4 Rename vp8/ codec directory to vp9/.
Change-Id: Ic084c475844b24092a433ab88138cf58af3abbe4
2012-11-01 16:31:22 -07:00