When it is the last coeff, we don't have to search for the cost of
making it as the last signficant coeff.

Reset has_nz_tail when new eob is found.

Speed impact: ~2% improvement
PSNR: 0.01%

Change-Id: I0429d3506be30431c3e7108fb1d011930a52c419

Negative distortion is used in trellis quant process for RDcost
computation, this change avoids compiler warning on "left shift
of negative values".

Change-Id: Iaea0ffebb6c9236e779e36301fbc69b180be1f3d

Change-Id: I8bb21fbbc3366690ccc13a9b31a6726dfbfa2ff4

Initialize all the 3 planes even if the video is monochrome.
There were some unintended consequences with initializing
only the luma plane for monochrome videos, which will be
resolved subsequently.

Change-Id: Id57445e3a5a62605511220600e749e662d080b49

Skip the quantization and reconstruction process when the best
selected intra mode goes with skip mode. Tested on a few 1080p
key frame coding at mid to high bit-rate range, the encoding
speed is up by 3% - 5%.

The compression for hdres key frame coding is improved from
neutural to 0.3% gains.

Change-Id: Id6b7131e82cdb45e53db65e2b92d8ccfcf00f47e

Reduce the context model size from 3 sets to 1 set for motion
vector difference coding in opt-ref-mv.

Change-Id: Iece1e01bb44f6a445c13787aa948400b8feef118

Change-Id: I51a751cd656846e6f3db6c15e320bdc7f1c868fe

Removed compressed header related code that is not used anymore.

Change-Id: I8e4881ecf9a4e0a25bd59a456eab9815d4bdd418

The x0 parameter can now be chosen on the encoder side
independently of the dq offset.

Change-Id: I4a63bae6ae81d5a7f65c53efe1b1ecd713355b01

This fix build errors with MSVC.

Change-Id: I40c7de57247cc33920df2cc59cfeb933ac755023

Currently, OBU doesn't work with EXT_TILE. Temporally disable EXT_TILE
unit tests now, and will enable them once the issue is resolved.

BUG=aomedia:1242

Change-Id: I9ade6546f2f4546eccf73246e868a06f6f4d6a67

Change-Id: I6cd366d929d689217f292db07cbeaf1fd35c2055

The tx size cost should be included in the total rate cost.

Change-Id: Ib8fe9cc67cf712ba1c7c8f539b390909c7e6be7b

to process width 4 case separately

Change-Id: I18f5e026927c4d3d705586e9e0f8a6315931951c

DECLARE_ALIGNED is not guaranteed by Visual Studio 2013/2015.
Unaligned buffers result in segmentation faults in the SSSE3 HBD
implementation, so alignment is still required.

Change-Id: Ic4cf0719c2d260470e263851970c360b517d25c4

This change reverts to signalling an error on illegal intrabc motion 
vectors as discussed in the following bug:

BUG=aommedia:1229

Change-Id: Idbd4e43141b885eaa76d50247a196a1305518e32

Improvements have been made to calc_ab for both the
SSE4.1 and AVX2 versions of the self-guided filter.
These result in an increase in the speed of between
3% and 5% depending on the bit depth.

Change-Id: I83a12ba452fcbb61cce5066801ae213e23c609cd

The ref_mv_idx offset of 1 was not taken
into account for the NEAR_MV mode.

Change-Id: I0939cfd8cf2496f6d4f0dbac67b2e03942318195

SSE4.1 implementations of av1_convolve_horiz_rs and
av1_highbd_convolve_horiz_rs have been added, along
with the corresponding speed and correctness tests.

The interp_taps argument was defunct and has now been
removed and replaced with the UPSCALE_NORMATIVE_TAPS
macro.

Code associated with values of UPSCALE_NORMATIVE_TAPS
that are no longer used has been removed.

Change-Id: Ie74d8ca479a70c8d473ac12883cfe4f10b37a66d

Fix tx type as the default type and search for the best prediction mode;
then do a final search for the best tx type.

When it's enabled at speed 0, encoding speed increases to 3x with 2%
compression loss on keyframes. It's currently turned on for speed
2 and above.

Change-Id: Ic9ca1479da10d467a88a4d692d9c75da40d2798d

This patch made several changes.
1. Removed writing large_scale_tile bit to bitstream.
2. Created SET_TILE_MODE API in decoder to pass in tile coding mode
information.
3. Modified related unit tests.

BUG=aomedia:1204

Change-Id: I2d729afba8b1b9278543a5da154be7ae6c99d184

Order of IF statement reversed to ensure that
we don't attempt to access an element outside
the ref_mv_stack array.

Change-Id: I9568420ade271f11fe960b8ecddf9a2ea849a603

BUG=aomedia:1233

Change-Id: Ib740ee063b87003cf8c6cbd8f2ae4b917892e41c

Change-Id: I0156df138342be1f4ffa867a5e293887ff83e251

Change-Id: Ic357ba36525101310fa612916e04b5d46b513d54

Remove untouched code due to the differentiation on handling leaf node
and unifiy the duplicate code.

Change-Id: I93337a1a8a84dfd04c35b085d51ce40bbf1ecb60

Change-Id: I5100bce92f904e09b6067f5060dee5fdb3118933

In the decoder, the function get_tx_size_context() is called
by read_selected_tx_size(), *before* mbmi->ref_frame is set up.
This means that mbmi->ref_frame still holds the ref frames from
the previous block, and does not indicate if the current block is
inter or not.

Fortunately, all of the other functions called by read_selected_tx_size()
have an explicit "is_inter" parameter, which is set correctly.
So we can just plumb this through into get_tx_size_context().

Change-Id: I00f0f3704937f592ccc5d304ed20ee25196dd520

Change-Id: Ie9a331facd12a9d762ede09451f6d44b6b3ef795

BUG=aomedia:1231

Change-Id: Ibddf60bfbdd6ac037ca4d2fa9bbc2eb30841991b

Change-Id: I5e205150c62f07049187ddd61b670ad5197c1645

The auto-regressive model allows for different window shapes
and different lag sizes.

Although most likely to be used as a reference for modeling
noise in AV1, the model is currently parameterized more generally
than AV1 needs.

I will add an example (hopefully with a denoiser) in future
commits.

Change-Id: I1ba1067543601c2c01db4970d42766bb35da77f0

BUG=aomedia:1230

Change-Id: I8a66b6303752b77a09cca1fe6890137146c50d1e

BUG=aomedia:1236

Change-Id: I72c1e5ba7f0090c0831ca9aaccbc32dc4f1fdf4f

Change-Id: I25ae95ee7a02f5bd76e2bf91c41e7cdb87de0d85

Reduces cache misses in the decoder and hence reduces run time.
Run time reduction has been measured to be about 15% for HD (1080p)
content.

Change-Id: Ic42de04e0943c0f89c856b61fe174dcea96af5e5

Change-Id: Ic68c6e8d54782f47fe9d1d1775b861edeb52bf35

This change does affect encoder nor the bitstream

Change-Id: I516e4750c5df6cb0e288365f78dd4875510548f4

Change-Id: I861ccc09454606ce4172db02a52550f9b7a7800c

Static local functions.
Remove av1_ prefix for local functions.

Change-Id: I91cda7b6a1e09683ed70cd74e724db88ddf124dc