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Modified the copying code and the profiling showed better performance
than previous implementation.

Change-Id: I41f585e0b0eac7a0deb4dec197c178e412a48db9

Change-Id: I32c5015bedef07f58413c679b4aaf30651a357b9

Inter/intra matrices are the same. Reduce the dimensions
of the various matrices.

Change-Id: Ie5049af9195d9c48b6928143ac04ac0a5058d0d8

restrict_compressed_hdr experiment is made redundant by
new_multisymbol.

BUG=aomedia:870

Change-Id: I86100d114ca641a453c32ffd09cabb736809abd1

This experiment has been adopted.

Change-Id: Ife4c18a59791268b7ac0de5a8a08e762a042cae2

Supports 4x16 and 16x4 partitions as well as adds a fix
for 422 and 440 chroma subsampling.

Change-Id: Ibeb2218c8cb1c648c3b2f6bce10281ccbcacf20f

Change-Id: Id377c68e30031ad4697ca1ba311487b803a8af4c

Disable corresponding 2x8 and 8x2 chroma inter predicitons for
chroma temporarily.

Change-Id: I7caf8da303d9231534e960fde1a5639cf9820635

Change-Id: I43c3f337e2a648ec4ee17ceab0a8f6892924d3b2

Since CB4X4 is adopted and without it the codec does not work,
it is better to remove it and simplify the code.

Change-Id: I51019312846928069727967e3b2bbb60f0fba80d

The bits needed by striped loop restoration are now in
RestorationInfo (which also gets rid of a rather ugly extra
index).

The scratch buffer that's used for self-guided restoration has been
moved up to its own variable (rst_tmpbuf).

All the rest of the fields are now safely hidden inside restoration.c

This patch also does a big cleanup of the initialisation code in
loop_restoration_rows: it doesn't need to be as repetitive now that
the fields of YV12_BUFFER_CONFIG can be accessed by plane index.

Change-Id: Iba7edc0f94041fa053cdeb3d6cf35d84a05dbfaf

Let the writing/parsing logic do the +7/+2 offseting,
and let the rest of the code directly manipulate the actual values.

Change-Id: I460d5bf18446c028f326cb747b3c26c8d451637c

Change-Id: I5bff0a68602a89ce480fec049c8b2c4bce44f6bb

Change-Id: I9d3f0380865790d8adcb85f03305b193bc1949d7

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

Change-Id: I4705652ac8231ee25f960e8096dc97c2aeed1d20

Reduce the needed memory space for motion field estimation.

Change-Id: I9caa228aa804a06370a34715a1c3463564d8d86b

Align all the motion vector storage buffer in 8x8 block resolution.

Change-Id: Iea786db95b2274332a755dc60f66510c068e3dc5

Use just one tile for CDF backwards update.

Enable by default.

Change-Id: I0c89f87c16e5b24894f8cd3151efc5ad5aaecb49

BUG=aomedia:906

Change-Id: I9cdcc5e5a7407858bb37cd93d748463ede9981b6

Change-Id: I7a73dbe72b618e795191cc31bc32e31ad99d8587

Add an experiment "tmp", which includes:
1. Always use larger block size while storing frame MVs and make
it consistent for CB4X4 or non-CB4X4 cases. Namely, use 8x8 for
4x4 mi size and 16x16 for 8x8 mi size.
2. Allocate smaller buffer for frame MVs and save memory usage.
3. Use nearby 8x8 or 16x16 location's previous frame MVs, and make
the logic simple.
4. Reduce the number of copying for frame MVs, that is very costly
in decoder.

Baseline decoder got 5+% speedup. Borg test on lowres set showed a
+0.009% PSNR difference before/after the patch.

Change-Id: I61e14e95fd35bea88f338931b4f43c44f4e4cf1f

Earlier, the superres scale was in the form of:
N/16, where N ranged from 8 to 16.

We change this to the form:
8/D, where D ranges from 8 to 16.

This helps on the decoder side, by making it possible to work on 8x8
blocks at a time.

Change-Id: I6c72d4b3e8d1c830e61d4bb8d7f6337a100c3064

cm->superres_scale_numerator is used for both keyframes and
non-keyframes, and is initialized from either
oxcf->superres_scale_numerator or oxcf->superres_kf_scale_numerator as
appropriate.

Change-Id: Ie46df576ef3830e181643ae591d836449a4bd38f

Reduce the context model size for key frame modes from 30240 bits
to 4500 bits, i.e., less than 1/6 of the original context model.
The coding performance loss on key frame is 0.14% for lowres and
noise level difference for video sequence. The loss on key frame
for midres is 0.05% and noise level for whole video. The change
on hdres kf coding is 0.015%.

Change-Id: I9e36825e5c5ee6ba35038c3ca349ad1ad3429910

When ext-partition and ncobmc-adapt-weight is on, avoid too large
stack allocations.

Change-Id: I8db74e45cac80c4e5dfd9e20cfc73d9978d1578e

Change-Id: I067127a2cd75d038c8f769310028a438c253db5a

When experiment LOOPFILTER_LEVEL is on, there're four base filter levels
for each frame. This patch enables one to use one delta or four deltas
to update corresponding filter levels for each superblock in
EXT_DELTA_Q.

1 bit per frame is sent through bitstream to select one or four deltas.
Now, we hard code to use one delta.

Change-Id: I9c61a035064fa81878b0575ad21664e2b22a6a45

These two flags serve essentially the same purpose, so we can
simplify down to just having one flag. Since the
frame_id_numbers_present_flag is older and listed in the
reference-buffer design doc, this is the one we'll keep.

Note that, previously, frame_id_numbers_present_flag was only
sent when CONFIG_OBU was enabled - otherwise it was always set
to 1. On the other hand, use_reference_buffer was always signalled
so that allowed us to disable frame ids even without CONFIG_OBU.

In order to keep the ability to disable frame IDs without
CONFIG_OBU, we send a "real" sequence header (ie, with the same
data as in CONFIG_OBU) in-line within the uncompressed header.
This is sent every keyframe and every intra-only frame, just
as the use_reference_buffer flag was before this patch.

BUG=aomedia:853

Change-Id: I4bb6c7a222aeddfb6d3737a39d10782d32ee2eee

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

Change-Id: Ic077963f72e8cc2ae9872b58c8a0241988384110

This hides behind --enable-ext_partition_types_ab. When that flag is
set, the mixed partitions change from

   +-+-+---+          +-+-+---+
   |   |   |          | | |   |
   |---+   |    to    | | |   |
   |   |   |          | | |   |
   +-+-+---+          +-+-+---+

(that's PARTITION_VERT_A; other partitions change similarly).

Since 128x32 and 32x128 block support hasn't yet been merged, this
patch also temporarily disables these partitions for 128x128 blocks.

Change-Id: Ic479c0fc129f590b8ad56d72dc98ba79ae1bd1cf

Move functions related to frame index in natural order setup into
a root experiment.

Change-Id: Iebc71514b951dbb658cf0e1c3d42bb2b180d830f

Change-Id: Ia87267da613567af2899aadef87a9815cf49bcf5

Change-Id: I52f204000f5fdaf1c6fff63949d72e858ceea462

Allows saving bits when reference buffer is not to be used in
cases where error resilience is unimportant.

Change-Id: I2ef002a7cce96a158e1e58c2b00f0a6846049fff

Enable the RESTRICT_COMPRESSED_HDR experiment when
NEW_MULTISYMBOL is on and apply when there is no
backward update also.

Change-Id: I5f6812df2cb3f9bc32fe533b2689fd51235aedbc

This patch is designed to complete the CONFIG_MAX_TILE experiment.
It adds the following features:
- Explicit tiles of same width can be signalled with command line --tile_width
- Explicit tiles of same hieght can be signalled with command line --tile_height
- max_tile now works with the depenedent horizontal tiles experiment
- additional checking added to ensure maximum number of rows/columns <= 64
- one fix to the tile group code for when the number of tiles is not a power of two

Change-Id: I749a68fdb3dcdd8d1ced2b3558f3817e4b832c06

The compressed header is now used only when the refresh
type is set as forward, i.e. in error resilience and
frame parallel modes. As long as backward updates are
used the header is disabled thereby saving bits.

Change-Id: Iee9f66ffbd30ef3552ea41b75e4b51537cd9ff97

Search and pick filter level for each superblock after the entire
frame has been encoded. And then apply loop filtering using
selected filter levels.

Now it can't work with LOOPFILTER_LEVEL. Y, U, V planes share the
same filter level.

Per superblock, filter levels are signaled via bitstream.

Future work: move selecting filter level into each superblock
rather than wait for the whole frame encoded.

Change-Id: I46cb994ec4866abb0456146f7c3cae8813c1d52e

This adds the tool CONFIG_MAX_TILE
Uniform tiles are implemented using power of two number of rows or columns.
Maximum number of rows or columns is 64
Explicit tiles will follow in a later commit once the command line API is updated for this

Change-Id: Ia8d22e7f4aa779448211496c644937afdf037228

Change-Id: Ic3c93a5d2e427ce1ed578389196a265245063821