This commit enables configurable reference buffer pointer for intra
predictor. This allows later removal of spatial dependency between
blocks inside a 64x64 superblock in the rate-distortion optimization
loop.

Change-Id: I02418c2077efe19adc86e046a6b49364a980f5b1

Change-Id: Idbb2ea80f764fa830fe2ddcfc54ef7fe232f05a8

Removing block index (ib) parameter from get_tx_type_{8x8, 16x16}
functions.

Change-Id: Ia213335aae7a7cb027f97b9cc9b04519840250f1

Since intra block decoding is handled by decode_sb_intra() separately.

Change-Id: I42d757884714084c92fc23ec5d35d4dc946f4b15

Change-Id: I183a38997a9d01e4a1b869e92509f6915216fa09

Change-Id: I927c7223996cdeb44f46e0e6c2e2054d458c300b

Moving single function from vp9_invtrans.c to vp9_encodemb.c.

Change-Id: I26bf6bb90de342a3036c0dbfba78a7dd75a61fe7

All elements of this table are equal to 252, so replace it with a
single constant VP9_COEF_UPDATE_PROB.

Change-Id: I1e2d1d284326ce6df9899a740c2fc344b3ec81c9

Avoid calling decode_block, inverse transform/add in the block is
a skip block for SBs smaller than 8x8 and intra-coded SBs.

Change-Id: I1684182f4a0050c8d6bb46cba6830d9425e7127d

- size_t is 64bits in win64. int is 32 bits.

Change-Id: I4e756427ad42c841098a01a216469f65313987e7

These functions are not used, and appear to have been superceded.

Change-Id: I86fe51b088264f6b1b8d4d232bba97b371b98120

A corrupt bitstream could refer to a reference frame that has no size.

Change-Id: I56c3b71a9dbb58b498e9969403e289c0e574f948

Previous code indexed using the tile length coded in the bitstream
without checking that the read would be valid.

Change-Id: Ia5047762223a4f80d75016dd546dc2ef18b6887d

Removes the case of coding prob = 0 for forward updates, since that
is not an allowed probability to code.
Slightly improves efficiency but may not matter in practice.

Change-Id: I3b4caf82e8f0891992f0706d4089cc5a27568dba

* New probs for subpel filters/tx_count
* Makes a change to not reset to defaults for the tx_size
probs if an intermediate frame reverts to using a fixed tx_size.
* A few updates to the parameters for backward adaptation for mode/mv
* some cosmetic cleanups

derf300: +0.06%

Change-Id: I22994d659bc31ca7a4fc8820fde24001e64a2920

This is consistent with uncompressed header encoding.

Change-Id: Iccf40a44b493ed36ee085b81ed56f7952cde70a9

Remove the bilinear filter mode, and the no-loopfilter mode, and the
related vp9_setup_version() function.

Change-Id: I32311367812faf37863131df3af37d63d03973d7

Implements ability to signal and decode frames that are
encoded using only intra coding modes. Only the decode
side has been implemented here.

Change-Id: I53ac6a8d90422cd08ba389e5236e15b45f9e93de

Reduces TX_SIZE contexts to 2 for each kind. The code is
cleaner and there is hardly any performance difference with
more than two contexts.

Results: almost neutral

Change-Id: I17656bd6db76224ae2856adf882504560e7dbaa4

For key frames everything is the same as before. For inter frames we try
to reference last/golden/altref frame size. If there is no match then the
actual size is encoded. Also we don't allow zero width and height anymore.

Change-Id: I49d791fd94af749c823579b0c5ef17c961372678

Made changes to the frame header to write the sync
code in the frame header for a non-displayable,
intra-only frame.

Extended reset_frame_context to 2-bits.

(Submitting on behalf of Dmitri)

Change-Id: Ie836ae0df9ed572fb4f08aabe9351a555c4f3b96

Adds coding of transform size within a frame by use of context
of transform sizes selected in left and above blocks.

Also incorporates code for generating stats.

TODO: generate and incorporate new default stats

Change-Id: I6a7af099f6ad61d448521d9a51167aedaf638ed6

Refactors mbskip coding to be compatible with coding of the rest of
the symbols. Adds forward/backward adaptation and removes a lot of
the legacy code.

Results:
fast50: +1.6%
derfraw300: +0.317%

Change-Id: I395a2976d15af044d3b8ded5acfa45f6f065f980

Change-Id: Ib44541fbbdcf71ec881814bd6715ea1c6bd82cf4

The partition types of blocks sitting on the frame boundary are
constrained by the block size and the position of each sub-block
relative to the frame. Hence we use truncated probability models
to handle the coding of such information.

100 frames run:
yt 0.138%

Change-Id: I85d9b45665c15280069c0234ea6f778af586d87d

Just an intermediate change set to simplify merges. Reordering several
uncompressed header bits, code restructuring + minor cleanups.

Change-Id: I28272f520762f8c4e3ad230ae39fff5102ba5c0d

Changes to the coding of transform sizes, along with forward
and backward probability updates.

Results:
derf300: +0.241%

Context based coding of transform sizes will be in a separate
patch.

Change-Id: I97241d60a926f014fee2de21fa4446ca56495756

Adds the ability to have the decoder show one of the existing reference
frames directly, without having to code it indirectly as a series of
skip blocks.

Change-Id: Ib6c26c5f6a8709863cf304ab890db8559687d25e

Adds 3 bits for colorspace (sent on keyframes), 2 bits for version.

Change-Id: Iaa0cf1dcdd085cebb46e2bc4a7c78cd33cf24325

Code intra/inter, then comp/single, then the ref frame selection.
Use contextualization for all steps. Don't code two past frames
in comp pred mode.

Change-Id: I4639a78cd5cccb283023265dbcc07898c3e7cf95

Change-Id: I0ca77329d882a2026f6c1941b8e447d86bc87bda

Split partition probabilities between keyframes and non-keyframes,
since they are fairly different. Also have per-blocksize interframe
y intramode probabilities, since these vary heavily between different
blocksizes.

Lastly, replace default probabilities for partitioning and intra modes
with new ones generated from current codec. Replace counts with actual
probabilities also.

Change-Id: I77ca996e25e4a28e03bdbc542f27a3e64ca1234f

This avoids encoding tokens for blocks that are entirely
in the UMV border. This changes the bitstream.

Change-Id: I32b4df46ac8a990d0c37cee92fd34f8ddd4fb6c9

Bits moved: refresh_frame_flags, active_ref_idx[], ref_frame_sign_bias[],
allow_high_precision_mv, mcomp_filter_type, ref_pred_probs[].

Derf results: +0.040%

Change-Id: I011f43c7eac0371d533b255fd99aee5ed75b85a5

Adds backward adaptation and differential forward updates of switchable
interpolation filter probabilities. Also adds some cosmetic cleanups
and minor fixes on mv_ref probabilities.

derfraw300: +0.353% (with most coming from switchable interp changes)

Change-Id: Ie2718be73528c945fd0d80cfd63ca2d9cb3032de

Overall PSNR drop on derf set is -0.024.

Change-Id: I1c05d2ace83488205ca16e3b06cd5f0ebceec8d6

Change-Id: I2dfc569106b29fbe4da20585a0e85e5e9ea6a4db

Change-Id: Ieb4669ae564bec9f3051485ecdf186cb4e00decb

It remains as a local define in rdopt.c so we can distinguish between
split and non-split modes in the RD loop, but disappears outside that
scope in the codec.

Change-Id: I98c18fe5ab7e4fbd1d6620ec5695e2ea20513ce9

Also merge all counters. This removes a few unused probability updates
from the bitstream.

Change-Id: I20f58853e9dac84d8c0d9703ae012c55917516eb