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short-circuit av1_get_tx_scale to always return zero when
CONFIG_DAALA_TX, and remove it from the actual Daala TX toplevel

This has potential overflow consequences for any metrics computation
based on pixels; as such, also force use of the high-bitdepth path in
each of these case.

subset-1:
monty-rest-of-stack-baseline-s1@2017-11-13T00:39:03.881Z ->
monty-rest-of-stack-noshift-s1@2017-11-13T14:37:42.541Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0030 | -0.0523 |  0.2656 |  -0.0239 | -0.0033 | -0.0029 |     0.0067

objective-1-fast --limit=4:
monty-rest-of-stack-baseline-o1f4@2017-11-13T00:37:06.999Z ->
monty-rest-of-stack-noshift-o1f4@2017-11-13T14:37:16.992Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0264 |  0.2303 |  0.0822 |  -0.0109 | -0.0395 | -0.0709 |     0.0538

Change-Id: I57da71861f105dc7a404fa75a75bde573855ef79

Change-Id: Ifd8275b9368139c8f1ab1e60ea09e177edd03bd1

Modified the lightfield encoding example to accommodate HW implementation
requirements. Fixed the encoding scheme, generated a bitstream of a list
of references followed by the surrounding large scale tile coded frames.
All large scale tile coded frames use the same uncompressed frame header
and the same set of frame contexts. This example also wrote out the frame
header and frame contexts while encoding a large scale tile frame and
setting EXT_TILE_DEBUG to 1.

Change-Id: I7cc19099195d0a20335d5c6bfb9f493f1bf3a7b2

In large scale tile coding(namely, large_scale_tile = 1), forced
all frames to generate a bit-exact uncompressed frame header.
This patch modified parameters that could change from one frame to
another.

Change-Id: Ibe72519da0b8a4f5a4ef30a4303ad7d7e4992a65

This does not affect the coding performance or hw throughput. It
prepares for sw decoder speed up.

Change-Id: I5965ba2269e8d843f562b63ccaade7df3429f4f5

Update cdf only when it is allowed.

Change-Id: I95ab08ff4220abdd277a7cd110b69c82364dddcb

Fixes cmake dependency problem with ext_intra_mod, ext_intra, and
intraedge.

Change-Id: Id4349e6d35cafbb183a755be038653f060ffdb2f

This experiment has been adopted, we can simplify the code
by dropping the associated preprocessor conditionals.

Change-Id: I6ac62c2825eabcba8f854cfa25c84638d9a73872

These were previously turned off.

Change-Id: I3ba0a18e47b4db1f6347fb592cff78f6bfb2b4fd

All tests are now passing.

Change-Id: Ifc1a0f3ff69f5730722a27eed092395595127e8e

HighBitdepth should be turned on if TXMG is turned on.

Change-Id: If5295d664dce17b7856b8cd675f84d915f25c33d

COMPOUND_ROUND requires CONVOLVE_ROUND to work.   This cl
adds that dependency.

Change-Id: I83922ca3143d8e7a4bbac279790574fb9ba575e6

Replace tabs with spaces.

Change-Id: Idc72b32450255954fca37af68f873239c186202b

LV_MAP and MRC_TX can't be turned on together, if LV_MAP is on
this cl disables MRC_TX.

Change-Id: I3a0e5df292948f309deb19f450dadc6c2a50b95a

This matches the code in read_partition in decodeframe.c and almost
gets rid of the last usage of the "partition_prob" tables which can
now be deleted.

Change-Id: Ibe0e947007d593d8e5f4ab10a38cd920856e566d

This experiment has been abandonned for AV1.

Change-Id: I3501181d096873dec35ea58e4b55530fa76e683f

Remove the previous experiment and now use the same name for a
simpler experiment that only enables 4:1 transforms for 4:1
partitions when ext_partition_types is on, and that which was
previously enabled with the USE_RECT_TX_EXT macro.

Change-Id: Iccc35744bd292abf3c187da6f23b787692d50296

This commit adds support of a separate qmatrix and iqmatrix for each
of the U and V planes. Currently the separate matrices are intialized
to the same ones, then the commit does not have any coding impact
yet.

Change-Id: I5c4045fe1879db262c6ec1567d8d7dfd9a98fbed

Change-Id: Icd0a8c4a9cf47cb93e8329ed0bdc0f79787baaaf

Until a valgrind error coming from the sse4 code is fixed.
This should resolve the valgrin below.

BUG=aomedia:1021

Change-Id: Ic461edb1da017d703a098bf5f9491fa51d0debcc

Change-Id: Ic4e16f30827e2e2e2dd140aee94d309b049dd063

Change-Id: I56a67e75d9f366dff8d92c9185b879365de437a7

The numerator in the mv projection can be negative, e.g. cur_to_bwd
or cur_to_alt2, since either bwdref or altref2 can be a forward
predictive reference, whereas the denominator always stays positive.
The rounding inside mv projection hence should use signed operation.

Change-Id: I42a105835754a002dd31fcfa7c845e4c105ec54f

This is still a rather inefficient black+white encoder, since it carefully
computes some chroma data, but just doesn't write it. However, at least the
bitstream is now monochrome.

Change-Id: Ie8a89bf329e7b41441032fb0d9e9011385bc12ff

To faciliate using intrabc on interframes.

Change-Id: Ibfe376190adf24d15198c5fb548e1050e191a3d6

I think the result is a little easier to reason about (you now talk
about a property of the block, rather than the behaviour that should
be enforced). It also matches the code in read_partition in
decodeframe.c

Change-Id: I13ba06b1504fa153b8b6b60fa14b373483639718

No change to the code, but these #if !CONFIG_NEW_MULTISYMBOL lines are
all in the #else part of an #if CONFIG_NEW_MULTISYMBOL...

Change-Id: Ibf11b1f0711113d9ee52927dcaf243d74e3f9d28

The "src_height" computed in save_deblock_boundary_lines didn't match
the one in save_tile_row_boundary_lines, which meant that the wrapper
function assumed the deblock code was saving some lines and that code
thought that save_cdef_boundary_lines would do it.

This patch fixes up the logic to match, and also completely gets rid
of the lines_to_save variable (after all, bad things would happen if
lines_to_save was 1 because we'll still read both boundary lines
later)

The tile height gets rounded up to a multiple of 8 luma pixels in
save_tile_row_boundary_lines to avoid nasty corner cases. This will
only have any effect for rows at the bottom of the frame (where
av1_get_tile_rect clips to the frame boundary).

BUG=aomedia:1020

Change-Id: I55adb53fa8ba9c7f97fb2fd5b328a3f2f5065464

The br_cdf and lps_cdf with a new 4-state symbol br_cdf.
The br symbol indicates whether the level is k, k+1, k+2 or >k+2
In the latter case, a new br symbol is read. Up to 4 br symbols are
read which will reach level 14 at most. Levels greater than 14 are
golomb coded.

The adapted symbol count is reduced further by this commit.
E.g. for the I-frame of ducks_take_off at cq=12, the number of adapted symbols
is reduced from 4.27M to 3.85M. About 10% reduction.

Gains seems about neutral on a limitied subset.

Change-Id: I294234dbd63fb0fa26aef297a371cba80bd67383

This experiment modifies lv_map to make use of multi symbol.

Replace the nz_map and coeff_base binary CDF with a new multi-symbol
CDF of size 4. The new base_cdf indicates for each coeff if the level
is 0, 1, 2 or >2. Two new special contexts are added to be used for the
last coefficient (the EOB coeff). For the EOB coefficient we already know
that it is non-zero. We use one context for DC EOB and one for AC EOB
(this can potentially be refined more).

The new symbol is read/written by special bitreader/bitwriter functions.
Those functions reduce the probability precision from 15bit to 9bit before
the invocation of the arithmetic coding engine.

The adapted symbol count is significantly reduced by this experiment.
E.g. for the I-frame of ducks_take_off at cq=12, the number of adapted symbols
is reduced from 6.7M to 4.3M.

Change-Id: Ifc3927d81ad044fb9b0733f1e54d713cb71a1572

And make variable consts when possible.

Change-Id: I823e56327e338ba669a0edd68c6c6d67077ebb7e

The decoder side correctly disabled delta_q but the encoder didn't.

Change-Id: I9f720c678d9e99d723c632095c058eaecd1a639d

Otherwise the previous value ended up being used, creating a desync.

Change-Id: I42d466474ce1a2567045720b8dfd413625f21cfa

Rather than backing out all the LGT-related shifting matrices
throughout the existing TX code, separate out and simplify Daala
inverse TX into a single dedicated entry point.  When DAALA_TX is
enabled, CONFIG_HIGHBITDEPTH is also forced, and all of Daala TX
(lowbd and highbd) uses this single TX dispatch.

This patch is purely non-functional changes.

subset 1:
monty-TXtesting-fwd-s1@2017-11-12T05:25:09.557Z ->
 monty-TXtesting-inv-s1@2017-11-12T05:25:43.878Z

  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

objective-1-fast:
monty-TXtesting-fwd-o1f@2017-11-12T05:25:29.386Z ->
 monty-TXtesting-inv-o1f@2017-11-12T05:25:58.897Z

  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: I790e8d7ac08eb214eb712f5441d6e5f76ebddf17

Change-Id: Idc201abd06cb1ac351a71bc723d9fed99c215b8e

Reduce context model number from 9 to 6.
Let context be two kinds: two reference frames are equal distance
or not.
Also, give equal distance compound weight {9, 7} instead of {8, 8}/16

Reducing context model gives neutral performance.
New compound weight provides -0.14% gain.

Change-Id: I8a3f3021eac9e446ac826e5992f42931af4c8962

Change-Id: I2c913198b7ad136cdf15d4af86b9b0b9e6850b72

Change-Id: I976b4a684d6d309da6b1076627f7e1e058e72932

Change-Id: I484121349af182f4f9525b1c992a6e77f6da7ea9

Change-Id: I96e5ff72caee8935efb7535afa3a534175bc425c