When aq mode is on, the quantizer will be reset later in the same
function (line 571).

Change-Id: I20635db31261d136d04d5deeb881ad3957078bf1

This commit moves the simplified coefficient probability model
and costing update to speed 4, and turns on chessboard pattern
mode search for sub 720p sequences. The overall coding performance
of speed 3 is improved:
derf  0.889%
stdhd 1.744%

The speed 3 runtime for test sequences are improved:
bus cif at 1000 kbps 9823 ms -> 9642 ms
pedestrian 1080p 2000 kbps 189559 ms -> 183284 ms

Change-Id: Iecbc7496a68f31fd49fb09f8dfd97c028d675a5d

This commit enables the encoder to skip NEARMV and ZEROMV if the
above and left blocks have identical reference frame, and the
current reference is different from that. It reduces the runtime
of speed 3 for test sequences:
bus cif at 1000 kbps 10064 ms -> 9823 ms
pedestrian 1080p at 2000 kbps 193078 ms -> 189559 ms

The compression performance is changed by
derf  -0.085%
stdhd -0.103%

Change-Id: If304f26d42e6412152a84c3dd7b02635c38444f4

This commit allows the encoder to check the above and left neighbor
blocks' reference frames and motion vectors. If they are all
consistent, skip checking the NEARMV and ZEROMV modes. This is
enabled in speed 3. The coding performance is improved:

pedestrian area 1080p at 2000 kbps,
from  74773 b/f, 41.101 dB, 198064 ms
to    74795 b/f, 41.099 dB, 193078 ms

park joy 1080p at 15000 kbps,
from 290727 b/f, 30.640 dB, 609113 ms
to   290558 b/f, 30.630 dB, 592815 ms

Overall compression performance of speed 3 is changed
derf  -0.171%
stdhd -0.168%

Change-Id: I8d47dd543a5f90d7a1c583f74035b926b6704b95

Reinstates an assignment to prevent an asan failurere on google3.
Not sure why the failure happens. This was removed in a recent patch
https://gerrit.chromium.org/gerrit/#/c/71068/.

Change-Id: Ifd9ccffd4c2164f4de38b21821ffb28bd779b0f3

Moved to global function to avoid unused function warnings...

Change-Id: I4e9002dcb20748f6d8d84cbbe6ef2de0bd9a8018

size_t -> uint32 in the call to vpx_codec_decode()

Change-Id: Ibf39d3749321c97292b35ac0631fa22211cff800

Change-Id: I38dad398844ee424a7a92a745ab703645018d02b

'ref_frame_map' is initialized to -1. avoids using an invalid index  if
VP9_GET_REFERENCE/VP8_COPY_REFERENCE controls are issued after a decode
error.

Change-Id: I4599762c4d0b07a5943a72bf4a86ccb596cc062a

if the decode of the first frame fails, frame_to_show may not be set.
fixes a crash in vpxdec with corrupt data.

Change-Id: I5ab9476d005778a13fd42a39d05876bb6c90a93c

Change-Id: I80284ae82915b9df56f7c5ef4953bd53e8cffd1f

Change-Id: I4dc2cb255f4fe30998b6ee61184895dee9f5da8e

Change-Id: I87255d8a25ef8c7d235cbf3c8887d7bed7892cfe

At speed 6 the smallest partitioning was 16x16 and biggest
intra block was 8x8, essentially disallowing all intra blocks
which produces ugly artifacts when revealing new video.

Change-Id: I364042d4c64e09be0666ade64aac94d0a1b586cf

Reverts to using tmpfile() for non-Windows platforms. On google3
the test directory does not have write permissions, and hence the
Y4mWriteTest fails. This patch fixes the issue.
On Windows, a temporary file is created in the temp directory
that has write permissions.

The tests pass on linux, mingw, and MS visual studio.

Change-Id: Ibada1d80e25d8b8e5b6a9d3d597533674bd9024c

Change-Id: I4906043ec1e3577ba37622a235c54adacb66125a

Alter way in which we identify static scenes.
Remove some redundant code.

Change-Id: I883c2ea2e341770648a8663d8881f720ed099b61

the bulk of the functionality was removed in:
a42b5c2f Removing legacy XMA features from libvpx.

BUG=840

Change-Id: I8ca51d6aa76028f36d0eb1a15d2f2e3161e12ea4

Sync with http://www.webmproject.org/license/additional/

modified:   PATENTS
modified:   third_party/libwebm/PATENTS.TXT

Change-Id: I97fc588589654c83c6cb7e2e2b909f23a370db8a