This patch allows the encoder to skip the partition search for the
frame if it is an inter frame and only zero motion vectors have
been detected in the first pass. The partition size is directly
assigned according to the difference variance.

Borg tests show overall little performance changes in term of PSNR
(derf -0.027%, yt 0.152%, hd 0.078%, stdhd 0%). The worst case of
PSNR loss is -0.514% from yt. The best PSNR gain is 4.293% from yt.
The second pass encoding speedup for slideshow clips is 15%-40%.

Change-Id: I881f347d286553ee5594a9ea09ba1a61ac684045

The encoder currently allocates frame buffers before
it establishes what the chroma sub-sampling factor is,
always allocating based on the 4:4:4 format.

This patch detects the chroma format as early as
possible allowing the encoder to allocate buffers of
the correct size.

Future patches will change the encoder to allocate
frame buffers on demand to further reduce the memory
profile of the encoder and rationalize the buffer
management in the encoder and decoder.

Change-Id: Ifd41dd96e67d0011719ba40fada0bae74f3a0d57

Change-Id: I9b745670a9f842582c47e6001dc77480b31fb6a1

This patch insures that the last byte of a chunk that contains a
valid superframe marker byte,  actually has a proper superframe index.
If not it returns an error.

As part of doing that the file : vp90-2-15-fuzz-flicker.webm now fails
to decode properly and moves to the invalid file test from the test
vector suite.

Change-Id: I5f1da7eb37282ec0c6394df5c73251a2df9c1744

Avoids failures:
MSE_ClearKey/EncryptedMediaTest.Playback_VP9Video_WebM/0
MSE_ClearKey_Prefixed/EncryptedMediaTest.Playback_VP9Video_WebM/0
MSE_ExternalClearKey_Prefixed/EncryptedMediaTest.Playback_VP9Video_WebM/0
MSE_ExternalClearKey/EncryptedMediaTest.Playback_VP9Video_WebM/0
MSE_ExternalClearKeyDecryptOnly/EncryptedMediaTest.Playback_VP9Video_WebM/0
MSE_ExternalClearKeyDecryptOnly_Prefixed/EncryptedMediaTest.Playback_VP9Video_WebM/0
SRC_ExternalClearKey/EncryptedMediaTest.Playback_VP9Video_WebM/0
SRC_ExternalClearKey_Prefixed/EncryptedMediaTest.Playback_VP9Video_WebM/0
SRC_ClearKey_Prefixed/EncryptedMediaTest.Playback_VP9Video_WebM/0

Patches are
This reverts commit 9bc04085
This reverts commit 6f5aba06
This reverts commit 9bc04085

I1f250441	Revert "Refactor the vp9_get_frame code for frame parallel."
Ibfdddce5	Revert "Delay decreasing reference count in frame-parallel decoding."
I00ce6771	Revert "Introduce FrameWorker for decoding."

Need better testing in libvpx for these commits

Change-Id: Ifa1f279b0cabf4b47c051ec26018f9301c1e130e

Another project in ChromeOS is using these files. To make libvpx
rolls simpler, add these files back unitl the other project removes
the dependency.

crbug.com/387246 tracking bug to remove dependency.

Change-Id: If9c197081c845c4a4e5c5488d4e0190380bcb1e4

When decoding in serial mode, there will be only
one FrameWorker doing decoding. When decoding in
parallel mode, there will be several FrameWorkers
doing decoding in parallel.

Change-Id: If53fc5c49c7a0bf5e773f1ce7008b8a62fdae257

Change-Id: I0ddd7dd55313ee62d231ed4b9040e08c3761b3fe

See: https://code.google.com/p/chromium/issues/detail?id=362697

The code properly catches an invalid stream but seg faults instead of
returning an error due to a buffer not having been initialized. This
code fixes that.

Change-Id: I695595e742cb08807e1dfb2f00bc097b3eae3a9b

This patch adds a mechanism for insuring error checking on invalid files
by creating a unit test that runs the decoder and tests that the error
code matches what's expected on each frame in the decoder.

Disabled for now as this unit test will segfault with existing code.

Change-Id: I896f9686d9ebcbf027426933adfbea7b8c5d956e

Copy split from macroblock to pick mode context so it doesn't get lost.

Change-Id: Ie37aa12558dbe65c4f8076cf808250fffb7f27a8

Clears "warning: 'return' with a value, in function returning void"

Change-Id: I93972610d67e243ec772a1021d2fdfcfc689c8c2

Clears error: unknown type name 'uint8_t'

Change-Id: I9b6eff66a5c69bc24aeaeb5ade29255a164ef0e2

s/stdint.h/vpx\/vpx_int.h

Added missing 'break;'s

Also included other minor changes, mostly cosmetic.

Change-Id: I852bba3e85e794f1d4af854c45c16a23a787e6a3

The test for this is in test vector code ( show existing frames will
fail ).  I can't check it in disabled as I'm changing the generic
test code to do this:

https://gerrit.chromium.org/gerrit/#/c/70569/


Change-Id: I5ab324f0cb7df06316a949af0f7fc089f4a3d466

This commit allows the key frame to search through more prediction
modes and more flexible block sizes. No speed change observed. The
coding performance for rtc set is improved by 1.7% for speed -5 and
3.0% for speed -6.

Change-Id: Ifd1bc28558017851b210b4004f2d80838938bcc5

Use break instead of goto for early exit. Unbreaks Visual Studio
builds.

Change-Id: I96dee43a3c82145d4abe0d6a99af6e6e1a3991b5

A superframe is a bunch of frames that bundled as one frame. It is mostly
used to combine one or more non-displayable frames and one displayable frame.

For frame parallel decoding, libvpx decoder will only support decoding one
normal frame or a super frame with superframe index.

If an application pass a superframe without superframe index or a chunk
of displayable frames without superframe index to libvpx decoder, libvpx
will not decode it in frame parallel mode. But libvpx decoder still could
decode it in serial mode.

Change-Id: I04c9f2c828373d64e880a8c7bcade5307015ce35

Change-Id: Iab9b4e11cad927f3282e486c203564e1a658f377