In lossless coding, distortion is always 0. Early exit based on this
metric was incorrect.

This CL also changed to use best_rd instead of distortion as the metric
for easly exit as requested by Jim.

Change-Id: I8ef3e407ac03b4abc3283b273f936a68fad5c2ab

Buffer 0 would never be decremented, so it could only be used
once.

Change-Id: I605d99fa2a513eadae6a0e230161729880653282

Change-Id: Ia6ef876e3d1e66b2182a9c0bce3fd758691cd381

Change-Id: I40a070c353663e82c59e174d7c92eb84f72ed808

The old code would start in a mixed state, where all the reference
frames were pointing to frame buffer 0, but the reference counts
were 0. This is why we needed special code for the first frame.

Change-Id: I734961012917654ff8c0c8b317aac00ab75ded1a

Change-Id: If40b930431766d5179b9769509b5e4ca1628e9cc

The test vector exercises the loopfilter behavior at frame boundary.

blue_sky_1080p25.y4m --good --cpu-used=2 --threads=0 --profile=0
--lag-in-frames=25 --limit=300 --min-q=0 --max-q=63 --cq-level=20
--end-usage=0 --auto-alt-ref=1 -p 2 --kf-max-dist=9999 --kf-min-dist=0
--drop-frame=0 --static-thresh=0 --bias-pct=50 --minsection-pct=0
--maxsection-pct=2000 --arnr-maxframes=7 --arnr-strength=5
--arnr-type=3 --sharpness=0 --undershoot-pct=100 --target-bitrate=6000

Change-Id: Ibd0807395d2fe87f24f81f990369678df3de7c23

The feature is not yet supported.

Change-Id: If46382302d2077b20670391b4a03017045a104f5

Using get_plane_block_size() instead of manipulation with subsampling
values, calculating all required values only once without redundant calls
to b_width_log2().

Change-Id: I00303f2a0926f9c4cb17f34591adda60615f8919

Modifications to the spatial scalable encoder to match
changes made to the scaling code in the decoder.

In particular, the use of a dummy first frame was removed
now that the decoder is able to handle a smaller first
frame.

SvcTest.FirstFrameHasLayers unit test re-enabled.

Change-Id: Ic2e91fbe4eadf95895569947670d36d68abaf458

Jingning saw bitstream change with this patch. It could be true
that (mask_16x16_0 & 1) is 1, but (mask_16x16_1 & 1) is 0 in some
edge cases.

This reverts commit 8f05e703.

Change-Id: I0a529435ce816a1e14653eb510d5090de276070a

Change-Id: I7ccbe13e1accd292a3e0e98522416f9c4b4bc82b

Change-Id: Ic7f47a8d233daf5e61e82092865837ea4eda4095

In the decoder we don't need to save eobs, we can pass eob as an argument.
That's why removing eob arrays from VP9Decompressor and TileWorkerData,
and moving eob pointer from macroblockd_plane to macroblock_plane.

Change-Id: I8eb919acc837acfb3abdd8319af63d1bbca8217a

Renaming constants for consistency:
  DCT_VAL_CATEGORY1 => CATEGORY1_TOKEN
  DCT_VAL_CATEGORY2 => CATEGORY2_TOKEN
  DCT_VAL_CATEGORY3 => CATEGORY3_TOKEN
  DCT_VAL_CATEGORY4 => CATEGORY4_TOKEN
  DCT_VAL_CATEGORY5 => CATEGORY5_TOKEN
  DCT_VAL_CATEGORY6 => CATEGORY6_TOKEN
  DCT_EOB_TOKEN     => EOB_TOKEN
  DCT_EOB_MODEL_TOKEN => EOB_MODEL_TOKEN
  MAX_ENTROPY_TOKENS => ENTROPY_TOKENS

Moving constants:
  INTER_MODE_CONTEXTS from vp9_entropy.h to vp9_blockd.h.
  EOSB_TOKEN from vp9_entropy.h to vp9_tokenize.h

Change-Id: I5fcbf081318e1d365792b6d290a930c6cb0f3fc2

Change-Id: Ic06124ed95a50935b1c6509907dcac87c7707bcc

Also added a test vector for this issue.

Change-Id: I8a8654f9d33b27afd53c295f1ea44d198550d067

This commit makes the coefficient tree initialized prior to token
initialization, where the coefficient costs are filled out according
to the probabilities associated with coefficient value categories.

Change-Id: If4e89c3923058376f8382c683fe4a225a4a38af3