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The write_motion_mode function only uses its "cm" parameter if it
needs to write out global motion information or distinguish between
motion_var and warped_motion. When these are disabled, you get a
compiler warning which this patch silences.

Change-Id: I64d06a150751cd72cf4b50799432f3161ee87938

This patch surrounds two uses of motion_mode_cost and motion_mode_cdf
with preprocessor #if lines.

Both uses were added by commit bdc8dab2.

Change-Id: I7e4a74e97b9179e42bae6ee17e9b2094acb992f2

This warning only comes up if none of the experiments ext-intra,
palette and filter-intra are enabled.

Change-Id: Ic58863d8d845034aa52230bf52a3c5def8d3ac0f

Initialize mode cost using frame-level cdf.
Also in rd selection stage, cdf is updated per 64x64.
Performance gain 0.20%

Still suboptimal since in real bitstream packing, cdf is updated
per symbol. Per symbol update in RDO is work in progress.

Change-Id: I5062af91d8b00e5bf4c08abd0a7bfb0e5b27a619

This commit makes sure that 8bit frame buffers used in global motion
estimation are updated, so to help global motion to improve compression
for hbd internal encoding. 

On lowres 12 encoding, the improvements are: 
Overall PSNR: .896%
SSIM:  1.159%
PSNR HVS: .952%

Change-Id: I5d75c231407bc1e4ed564c3a216bdd1ec3919f14

This experiment replaces the 16-point Type-II DCT and 16-point Type-IV
DST scaling vp9 transforms with the 16-point orthonormal Daala
transforms.  These have reduced complexity and are perfect
reconstruction.  There is currently no net coding performance impact.

subset-1:

  monty-square-baseline-s1-F@2017-07-23T03:43:45.042Z ->
     monty-square-dct16-s1-F@2017-07-23T03:42:29.805Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0152 | -0.0028 | -0.0929 |  -0.0432 | -0.0457 | -0.0425 |    -0.0237

  objective-1-fast:

  monty-square-baseline-o1f-F@2017-07-23T03:44:19.973Z ->
     monty-square-dct16-o1f-F@2017-07-23T03:43:22.549Z

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0305 |  0.0926 | -0.1600 |   0.0471 | 0.0219 | -0.0075 |     0.0135

Change-Id: I54fed26d65fd8450693334bb400b1fafd7e0dacb

Expand the range of alpha to [-2, 2] in Q3.
Jointly signal the signs, including zeros.
Use the signs to give context for each quadrant
and half-axis. The (0, 0) point is excluded.
Symmetry in alpha_u == alpha_v yields 6 contexts.

Results on Subset1 (Compared to 9136ab7d with CFL enabled)

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0792 | -0.7535 | -0.7574 |  -0.0639 | -0.0843 | -0.0665 |    -0.3324

Change-Id: I250369692e92a91d9c8d174a203d441217d15063
Signed-off-by: David Michael Barr <b@rr-dav.id.au>

- Wrong function argument fix: this was not caught by compile test
because DCT_DCT has a value of 0, which was converted to a NULL pointer.
- Wrong prob array size.

Change-Id: Iaf1747dc7fb40db1d1ab35f965fb60994d8dec95

Change-Id: I1b77416eaae000ae40e139d8f7fc31754f817bba

The commit 3bce7547 has introduced an another early-exit based on MSE distortion
in transform domain, which enables skipping trellis coding and
calling av1_dist_block() in block_rd_txfm() and skipping trellis coding in av1_tx_block_rd_b().

However, with dist-8x8, the early-exit for sub8x8 tx block in a partition >= 8x8 in plane 0
is disabled because that the reference distortion metric
(which would be non-MSE and applied to 8x8 or larger) can not be compared to
MSE distortions of sub8x8 tx blocks.

Change-Id: I46ada7c90a869d23fc0f0166a01dfdc5392af311

CfL is now an independent mode.

Results on Subset1 (Compared to 4266a7ed with CFL enabled)

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.1645 | -0.4017 |  0.2475 |  -0.1851 | -0.2179 | -0.2338 |    -0.2897

Change-Id: I2e86e7ea7bfc12bb1d763e70a136ca992d57a3c5

When the lower bound of a transform block rate-distortion cost is
above the current best rd cost, the only possibility that this
particular coding mode will be chosen is to fall back to all skip
mode. Hence there is no need to estimate the transform block rate
cost, distortion, etc. Obtain the sum of squared distance between
the prediction and the source would be sufficient.

This speeds up the encoding process by 5% - 10%.

Change-Id: I728728c3a42aafefd34641f0be69b3e2a9b9bbb2

Bug introduced in change: Ic4c9333c9af5993bc41e513b9e766450b3a951eb

BUG=aomedia:667

Change-Id: I29ab87f32d2f940a3d1e079f734b92467d2ebea9

The asm flags weren't getting updated when CONFIG_PIC
was enabled via the command line.

Change-Id: Ie4654337d2c7cba87d6902eb2b85097d1ab9e7ca

Added: CONFIG_INSTALL_DOCS, CONFIG_ALTREF2, CONFIG_FLEX_REFS
       CONFIG_LPF_DIRECT.
Changed, 0 => 1: CONFIG_RECT_INTRA_PRED

Change-Id: I1e958ab7dcd0c791b33a0ac5104fdf557f2cd29c

Make CDEF select filter strength every 64x64 block when block size
could be larger than 64x64.

With/without this patch, coding performances on AWCY and Google
test of lowres and midres are neutral.

BUG=aomedia:662

Change-Id: Ief82cc51be91fc08a7c6d7e87f6d13bcc4336476

Previously, U, V planes share the same filter level with Y.
Here, we search and pick the best filter level for U, V planes.
Selected filter levels are transmitted per frame.
This works with parallel_deblocking.

Coding gain on Google test set:
		Avg_psnr	ovr_psnr	ssim
lowres: 	-0.116		-0.120		-0.339
midres:		-0.218		-0.228		-0.338
hdres:		-0.260		-0.264		-0.365

Change-Id: I03d2ac47539f3eea9f3c4b08007bd6d3f4b73572

CONFIG_DAALA_DCT8 added the necessary related configuration
enable/disable logic to the CMAKE build to be consistent with the
Automake build system, but the earlier CONFIG_DAALA_DCT4 commits did
not.  This brings CONFIG_DAALA_DCT4 up to date and consistent with
DCT8.

Change-Id: Iba9fda00c251f5477fdb4c35fc5cd8874050b530

Change-Id: I63fc3f1f010e77c6dc033f37e3e91ade17a55099

Adaptively reduce the best rate-distortion cost value in the
recursive transform block partition search. For bus CIF at 1000 kbps
this reduces the encoding time from 1864 seconds to 1756 seconds,
about 6% speed up.

Change-Id: I5433a1825c0f8b13fcc5ab7e19713a98969d53fc

Change-Id: Ie2c34490dc50cb242bcd701308e6b55243883b15

1) Integrate it with supertx
2) Integrate it with chroma_sub8x8

Change-Id: If4bb906d442d15bae3741192029ec851c48d3948

A separate prediction mode struct is added to allow
for uv-only modes (like CfL). Note: CfL will be
added as a separate mode in an upcoming commit.

Results on Subset1 (Compared to 4266a7ed with CfL enabled)
  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0000 |  0.0000 |  0.0000 |   0.0000 | 0.0000 |  0.0000 |     0.0000

Change-Id: Ie80711c641c97f745daac899eadce6201ed97fcc

MRC_DCT uses a mask based on the prediction signal to modify the
residual before applying DCT_DCT. This adds all necessary functions
to perform this transform and makes the prediction signal available
to the 32x32 txfm functions so the mask can be created. I am still
experimenting with different types of mask generation functions and
so this patch contains a placeholder. This patch has no impact on
performance.

Change-Id: Ie3772f528e82103187a85c91cf00bb291dba328a

When convolve_round is turned on, both lbd/hbd use use 32-bit buf
Therefore, they use the same mask/blending functions

Change-Id: Icfc6db818c0a53216108e42161acac07303e6c1c

Change-Id: I94d66c65d78235e1025703caf79ccca43208d604

Around 0.9% improvement on screen_content set (encoding 30 frames).

Change-Id: Ic4c9333c9af5993bc41e513b9e766450b3a951eb

Change-Id: I416a7f99e292a6304bc24d93ab580650768d5e21

The soft coefficient optimization process would monotonically
increase the transform block distortion and decrease the
coefficient rate cost. Such observation provides a lower bound
on the rate-distortion cost for the given transform block. This
commit compares this lower bound against the best available
rate-distortion cost value and skips unnecessary optimization
process. It speeds up the baseline encoding process by 15%.

Change-Id: Ida8098a2820cef60d59ec1e72f0bbb1acbd98165

Use three metrics to identify the still gf group.
Performance:
lowres: pamphlet_cif -1.395; bowing_cif -0.989;
        others remain same. Overall -0.064
midres: snow_mnt_480p -0.827. others remain same.
        Overall -0.028

Change-Id: I22a6429c7ebdad2c36ec73c7a69cabc07e8208b7

The existing code has a case where we set a variable to equal
xd->ref_mv_stack[mbmi->ref_frame[0]][1 + mbmi->ref_mv_idx]
even for compound blocks. However, the range of allowable
values for mbmi->ref_mv_idx is determined by the ref_mv_count
for the *combined* ref frame, not for the first single ref frame.

This means that, if we have more ref-mv candidates for the combined
ref frame than for the first single ref frame, then we can sometimes
fetch uninitialized data.
In every case where this happens, we immediately overwrite
the destination with the correct mv, but it is still preferable
to avoid reading uninitialized data.

This patch moves the code block to avoid this bug. In addition,
the variable (nearmv[0]) is only used when the mode equals NEARMV,
so the condition on its assignment is changed to reflect that.

Change-Id: I3bd268dc80d8065d5189999232b8a0f826d40a95

This experiment replaces the 8-point Type-II DCT and 8-point Type-IV DST
 scaling vp9 transforms with the 8-point orthonormal Daala transforms.
These have reduced complexity and are perfect reconstruction at the cost
 of a slightly worse coding performance.
This is because the Daala transforms expect the input to be shifted by 4
 bits but the output scale of the vp9 transforms is only 3 bits.

subset-1:

monty-square-baseline-subset1 ->
  monty-square-dct8-subset1@2017-07-17T21:37:44.281Z

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0019 | -0.0011 | -0.0585 |  -0.0111 | 0.0305 |  0.0317 |     0.0187

objective-1-fast:

monty-square-baseline-o1f ->
  monty-square-dct8-o1f@2017-07-17T21:37:15.735Z

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0285 |  0.0129 | -0.5080 |   0.0529 | 0.0345 |  0.0441 |     0.0054

Change-Id: I2b775495398fb717204a295397c3c5e3ca938183

Because #if ... #else ... put the '{' on the same line, dangling { or } occurs,
which causes automatic syntax analyzer, such as 'Ctrl-Shifht-P' in Eclipse
or '%' of vi, fail to find matching { and }.

For some developers, this can make quick reading and/or understaning blocks of code
almost impossible.

Three function or blocks are repaird.
1. av1_rd_pick_inter_mode_sb() {...}

2. for (midx = 0; midx < MAX_MODES; ++midx) {...}
   in av1_rd_pick_inter_mode_sb()

3. handle_inter_mode() {...}

Change-Id: Ib5ac63b8c7f9870a491fac337ae3f58c57ce5e46

Make the codec account for the 64x64 processing unit constraint
when producing the mask for overlapped filter.

Change-Id: I3e596492ae522abe678369b0c9710441549e817e

For 128x128 level blocks, process the overlapped prediction in
the unit of 64x64. This allows hardware design to reuse the 64x64
processing unit in 128x128 level block coding.

Change-Id: I3967b8e3c1c697f96a50e59a0957fc69b67e6f8e

Change-Id: Id556e8d77c5871ddae338baa1abfb93b7aa207e9

This change does not alter the bitstream

Resuls on Subset1 (compared to 70a80a81 with cfl)
  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0000 |  0.0000 |  0.0000 |   0.0000 | 0.0000 |  0.0000 |     0.0000

Change-Id: I7672eb4cde3c649ebba32610f7e56500e378c062

Change-Id: Ie1f5db74d3b22a46abd09e0207770935622074a5

The performance stay the same compared to turn on adpat_scan for
all txfms

The  performance of adapt_scan on top of ext_tx are
lowres: 0.517%
midres: 0.484%
hdres:  0.639%

Change-Id: Ic148dbe9c0af4554bbbe3f7012625f389f997289

Change-Id: Ibd0bda593717aab2894c36dd59925a0bcf654113