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Add a 2x2 forward transform function for 4x4 coding block unit.

Change-Id: I44c8f0d55f371db68541e7e5f7cbd340a82cd788

Change-Id: Idc44fa29c70c9bb63c9b04cfba679fd05d34fdff

Performance gain (REF_MV on by default)
WARPED_MOTION: 1.061%
WARPED_MOTION+MOTION_VAR: 2.917%
MOTION_VAR: 2.337%

Change-Id: I43f742a02cdd43d13ef333a0a15087062ad020ab

Change-Id: Ie35949c803a39717162d2a304d58f68dbcfc1f45

Change-Id: Ia8ccf6f270c06d14ecd37882860ce6a5a50434e5

Change-Id: I21eaa680b0b340da5401a2b893ad9c847495ab79

Change-Id: Ic587cddf04053bced6325b3cd5ce1b963e783393

Compression will drop slightly
       BDRate
lowres -0.096%
midres -0.069%
hdres  -0.084%

However, this will reduce the combinations of filter types needed to search in
dual_filter experiment

Change-Id: I75d4ddc73b91099e17fd52a1b1174bd3d2ab3e18

Generate simd filter structure in av1_convolve_init()
This will provide flexibility of changing filter coefficients.

Change-Id: If79f84c56483aa08c894d6b12e2b6ce10147f0ce

Change-Id: I9374e6af5025df51663f35a2343b79c1970343ad

Change-Id: I82580120a154ecd7c41f4cd9bc0f8c669fca7774

The new prefixes are
0: 15 bits of state are added to the base state.
10: 22 bits of state are added to the base state.
110: Reserved for super frame marker
111: 29 bits of state are added to the base state.

The likelihood of any final state is proportional to 1 / state. Given a
state range of [2**15, 2 **23) this should save on average 0.4 bits
per serialized final state.

BDRATE
subset1: -.000%
lowres: -.010%

Change-Id: I8e66e4a6667f5692c541083e6d6edc35ff411181

Change-Id: I22aaaa78be22b133d2d0c28da10220cf4d4ab64e

CONFIG_EMULATE_HARDWARE disable SIMD versions of transform functions.
This commits added !CONFIG_EMULATE_HARDWARE to get tests that use
SIMD versions of transforms to compile.

Change-Id: I4b9ef5a46ae8f12c439f4fe18766b95f8a520d34

av1_find_mv_refs sets the ALL_ZERO flag when either (a) we don't have
enough candidate MVs, or (b) all candidate MVs are zero. With global
motion enabled, case (b) does not work as intended and causes two
problems: a significant quality decrease for foreman_cif.y4m, and
test failures in *CpuSpeedTest*Screencast*.

This patch skips check (b) when global motion is enabled, fixing
the above bugs.

Change-Id: I7461588cb02733563c1439f430b89190299a1b5d

- User level time reduction <1% on i7-6700 cpu

Change-Id: I8f15bde07dddd938df0b065e20ae94109e7b3b5b

This is added as part of ALT_INTRA experiment.

This uses interpolation between top row and estimated bottom row; as
well as left column and estimated right column to generate the
predicted block.The interpolation is done using a predefined weight
array.

Based on experiments, the currently chosen weight array was created
to represent a quadratic curve, but can be tuned further if needed.

Improvement from baseline on Derf set:
ALL Keyframes: 1.279%

Improvement from existing ALT_INTRA:
ALL Keyframes: 1.146%

Change-Id: I12637fa1b91bd836f1c59b27d6caee2004acbdd4

Change-Id: I7781ba9af9bffe7f77fab862c096a911a0580e56

Fix a case in rdopt where a block's mode would be set to ZEROMV but
its motion vector would not be set to the global motion vector.
This caused future inter frames' lists of candidate mvs to become
desynchronized between the encoder and the decoder.

Change-Id: I1bdc619f155c70ca8a1a3fe6eea1baee15dc2c33

This commit adds initialization for tmp_rd_stats, to resolve valgrind
warning of "Conditional jump or move depends on uninitialised value"

Change-Id: I79ed3bc046a66457c27185782645938d223872ba

Fixes a warning error on gcc 4.9 related to float conversions.

Change-Id: I1ba5410d8bff6aff21e2bbe1b4d34740336182cf

If there are N frames in a superframe, the superframe
index will enumerate the sizes of only the first
(N - 1) frames. The code assumed that all N frame
sizes are coded.

The size of the final frame in the superframe is
calculated as follows:
(data_size - index_size - sum_of_N-1_frame_sizes)

Change-Id: Ia53ae27455a4f024eec311bf7356a00e8e0d449a

Verified manually in a 1920x1080 4x2 tile configuration.

Change-Id: I08fe15d4354d3a9393a6ccbce9d9ecba41222ac7

Change-Id: I21013412174a2edefdc5e30ece0e8e857b99ac5e

Change-Id: I95455ed7e44f3a163c751bd8a89f6119c0055c71

By adjusting the internal scaling and rounding in the transforms,
we can adjust the maximum round-trip errors to:
* 8x16 and 16x8: 0 pixel values (ie, transforms are exact)
* 16x32: 1 pixel value
* 32x16: 2 pixel values

Change-Id: I0ba691a8d27042dcf1dd5ae81568d07a92d68781

Change-Id: I3f0af5cf71d17f4d331d846d92728396399f187b

Use the offset to code tx_size, which allows better scalability in
the implementation. This commit fixes the enc/dec mismatch issue
in cb4x4 experiment.

Change-Id: Ia814273b0be43819f92d1c41cfae4964cfb76ced

Generalize intra buffer size to cover 64x64 txfms.
Fix tx_size encodings.

Change-Id: Ibc219d291b850a600c3a1370d88769a7640fb4d2

This commit fixes a build error where returned value does not match
defined return type.

Change-Id: I1d2c879d0cf7d90fcc7105683695a371c9fe9f58

This commit fixes the use of uninitialized value in the RD search
loop. It brings back the coding performance loss when the above
three experiments are all turned on.

BUG=aomedia:92

Change-Id: I19d7904c354e7a94e5f672bf416267971791c371

The recursive transform block partitioning system naturally supports
the use of rectangular transform block size. Hence there is no need
to make a separate coding route for the rectangular transform block
size support there.

Change-Id: I709b61f94cd4a6ea3f33c05abe319488c7d24f5a

Change-Id: I6e423db799cf7d4573e78c82f372b7e3323385ea

- Add TODO note for unoptimized tx_type in inv txfm.
- Add TODO note for a unit test code cleanup.

Change-Id: I75527b14370174102ab127ebfc12d4a4c20fbe21

The processing units support the rectangular transform block size.
Update the assertion conditions accordingly.

Change-Id: Iebd46dbbb04feaf161fb02f203fa2cde50b2b700

Change-Id: I8e02440bfe8e7cb7bb7e92c464981e184367b773

This patch removes non existent test files to avoid jenkins failure.

Change-Id: I52ae4c52a53d87901d53cc66ef0a1fc3cb0ad5d7

This commit fixes the warnings of "value stored to 'mode_ctx' during
its initialization is never read".

Change-Id: I39e78a5915d29c74854306d009b7a6e002dda781

Fixes warning error introduced by : aom/5942

Change-Id: I1e2c013a3f8859bbcf4548a67347011f4b0fb650

This resolves the unit test failure case at
AV1/AVxEncoderThreadTestLarge.EncoderResultTest/1

Change-Id: I9f3aaaf5498177cb3623cb8806a40f812e20609d