This patch allocated frame contexts outside VP9_COMMON. This allows
multiple threads to share the same copy of frame contexts, and
reduces the overhead. It also guarantees the correct update of
these contexts during bitstream packing. This patch doesn't change
encoding result.

Change-Id: Ic181a2460b891d1d587278a6d02d8057b9dbd353

Currently, the tokens for a tile are stored immediately after its
preceding tile, which causes a dependency. This is unnecessary
since we always allocate enough memory for tokens. Removing
the dependency allows token writing done in parallel. This patch
doesn't change encoding result.

Change-Id: I7365a6e5e2c2833eb14377c37e1503c9d0f26543

This removes an unnecessary restriction that causes
a problem (noticed by AWG) when the forced key frame
interval is set to a very small value, such as 10. In this case
we were being forced to code minimal length GF groups.

Change-Id: I76ef5861a09638ff51f61fea02359554184ada53

We encode a empty invisible frame in front of the base layer frame to
avoid using prev_mi. Since there's a restriction for reference frame
scaling factor, we have to make it smaller and smaller gradually until
its size is 16x16.

Change remerged.

Change-Id: I9efab38bba7da86e056fbe8f663e711c5df38449

This reverts commit 452dc215.

This change has introduced a significant quality regression on content
with forced key frames. (e.g. the YT and yt-hd set). It is most
noticeable in static content where the kf bits dominate. Here, despite
key frames being apparently coded at the same Q, there is a drop in all
metrics of ~20% (e.g clXR and BFa0).

Change-Id: Iba14cc61778c0846fa0a59c33c55a9fc49512cb4

This reverts commit c113457a.

Temporary revert to allow clean revert of another commit.

Change-Id: Ia9b7b755e6c48e1b6e383329f121fef175a24b27

Reduce the intra_cost_penalty for non-rd mode,
and some updates to VAR_BASED_PARTITION.

Visual tests show some improvement at Speed 6, for RTC clips.

Change-Id: If9090daf7aed14906a32d931a538ab544bbca606

This commit replaces the use of copy_partitioning with
choose_partitioning based on the sse of subsamped pixels, which
provides significantly better coding performance and runs at
similar speed, as compared to copy_partitioning. It improves rtc
speed 5 coding performance by 3%.

Change-Id: I52d3682a12dce0147f5e52383a594fc242ca3228

Fixes a bug introduced in a previous refactoring patch.

Change-Id: I243e74637cfd7a997c7a1fef03b06c290dd0dee6

this change checks that CONFIG_SPATIAL_SVC is defined and adds a TODO to
ensure this is changed in the future as the release headers can't
depend on vpx_config.h.

vpx/vpx_encoder.h:164:5: warning: "CONFIG_SPATIAL_SVC" is not defined
[-Wundef]

Change-Id: I797a0150e5f56caf048e7ee00b282fbc9c5ede19

We encode a empty invisible frame in front of the base layer frame to
avoid using prev_mi. Since there's a restriction for reference frame
scaling factor, we have to make it smaller and smaller gradually until
its size is 16x16.
Change-Id: I60b680314e33a60b4093cafc296465ee18169c19

set_tile_limits() is called in vp9_change_config() already.

Change-Id: I91c3a0df2c1c7fd7e71546d8f51fd5b65838a7da

This is based on the 64-bit ssse3 quantizer.

1.1x speedup for screen content at speed 7.

Change-Id: I57d15415ef97c49165954bbe3daaaf9318e37448

Change-Id: I59a53b419adda3a609d50b2a82f5a4a54849752e

Use return value 0/1 as indicator of the validity of the rate-
distortion cost.

Change-Id: I6244126fbf03472cebcba4f177a6cd329fae4743

Move the point at which input frames are scaled
into the recode loop. This will allow us to change
the coded frame size dynamically in response
to previous attempts to encode the frame at a
higher resolution.

A following patch will implement a scheme for
resizing the frame in the recode loop.

Change-Id: I6a59c02d6ac1626512edad6de8b60063b79433e6

Replace repeated fetch cpi->sf with a local sf pointer.

Change-Id: I5a55bba3e1c41fbdbc6ad5f078d2fa49dd95ee67