For content that is identified as likely to contain some
animation or graphics content, increase the availability
of split modes for good quality speeds 1-3.

On a problem test animation clip this improves metrics
results by about 0.25 db and makes a noticeable difference
visually. It also causes a small drop in file size (~0.5%) but
a rise in encode time of about 5-6% at speed  2.

For more normal content it should have no effect.

Change-Id: Ic4cd9a8de065af9f9402f4477a17442aebf0e439

fails unit tests:
[  FAILED  ] NEON/VP8SubpelVarianceTest.ExtremeRef/0, where GetParam() = (3, 3, 0x14e36d, 0)
[  FAILED  ] NEON/VP8SubpelVarianceTest.Ref/0, where GetParam() = (3, 3, 0x14e36d, 0)

the tests were recently enabled in:
eb88b172 Make vp9 subpixel match vp8

the functions likely haven't changed since being converted from assembly

Change-Id: I6141717b111b8f735f436c160d74270af53ef722

Change-Id: I95827a6f5e585d2accbb8fc09501f2d38db585e4

move them under their respective config check to avoid some unused
variable warnings when disabled

Change-Id: Ic5e5280cf1bc1f56e8349676f0bedae4acef34ea

Change-Id: Ia689c254bd2d4f274abcc451a9b758f62e3a2b1f

this quiets warnings from armv6 code [1].
from msdn [2]:
-oldit
Generate ARMv7-style IT blocks. By default, ARMv8-compatible IT blocks
are generated.

a new configuration would be needed for armv8 in any case as the neon
assembly is being built, so removing this should be harmless

[1] A4509: This form of conditional instruction is deprecated
[2] https://msdn.microsoft.com/en-us/library/hh873189.aspx

Change-Id: I4c3b838b52a87401c6daecd83d22ab148ed7c5d9

member access within null pointer of type 'FRAME_COUNTS'

Change-Id: Id3bf75e0a6f2a1abf8522cf9fbb98b3a4443de38

This control allows the application to skip the loop filter in the
decoder. This is an advanced control that should only be used in
extreme circumstances as it may introduce and accumulate decode
artifacts.

Change-Id: I278c65c60826f84c9141ebe06c6eeed3c2335fa8

WebM files will adjust the display width and height according to the
input pixel aspect ratio. The default pixel aspect ratio is 1:1.

BUG=https://code.google.com/p/webm/issues/detail?id=1005

Change-Id: I23e0a601b7259fa9513cb86110c41b8437769808

For real-time mode: keep reference_frame masking off
for spatial svc.

Change-Id: I15e123c06f67ea040172b8d4042a672f3525b9d8

average improvement ~3x-4x

Change-Id: I59279293ce4b2a1e99bd10579ac97740e943643f

calculate the averages needed for even and odd rows once; this removes a
conditional from the inner loop
the final average calculated currently relies on above[] being extended,
it could be reduced to use
above[block_size - 2] + 3 * above[block_size - 1]

Change-Id: I70f5eac8d8a2a959c7114844a95826f445c3dd4d

the final index in rows 2, 3 differ from vp8

Change-Id: I0fcea907b4ab44e266c0f1fd77b290d2236b280a

Index for ts_rate_decimator should be temporal layer (tl) index.

Change-Id: I0320b7f7ae987ef64fdfe7c45099e7978a8fef17

Change-Id: Ic3b4f3c9a6d8f9b04efb8b5ee080880895063564

Change-Id: Iee24b6bb095f748333223e6036fc5c9d9e7e5f1c

average improvement ~3x-4x

Change-Id: I8ef263da6ebcf8f20aabaefeccf25a84640ba048

The only difference between the two was that the vp9 function allowed
for every step in the bilinear filter (16 steps) while vp8 only allowed
for half of those. Since all the call sites in vp9 (<< 1) the input, it
only ever used the same steps as vp8.

This will allow moving the subpel variance to vpx_dsp with the rest of
the variance functions.

Change-Id: I6fa2509350a2dc610c46b3e15bde98a15a084b75

Change-Id: Iab7215f82be0c0c831cd81b6f8091afc3710dd54