A left shift of negative value causes IOC runtime warnings, this
commit converts two such left shifts to multiply to avoid IOCs.

Change-Id: I8811428768d7135e6e16af4b3094d0341589a995

The first comment is obselete given the way is now normative in VP9
bitstream. The second comment line was too long.

Change-Id: I6546585babf60d466485ddcf2daa6d2fa79e999a

Change-Id: Id757d2c940756ce1b0ead2ea24af9ac0a493de05

As reported in issue #850, the condition for border extension was not
complete. This commit added the case when the scaling is enabled.

This fixes issue #850.

Change-Id: I67768b23f0dcc4ac9a9aa0a0825b0fe8cb85a72e

Change-Id: Ia959e24b4676242c80a8867d2c39a6fee90f71a5

Compiler build issue when output stats enabled.

Change-Id: I7b5409108f3f27ba61b0241b9340b412683eff45

Change-Id: I35b015a759325d72d0da427c61a09f19f8e69697

Also adds some miscellaneous high bit-depth setup functions.

Change-Id: I66488b08a5a2a8cb9518ca10497cf1c1501ceded

Adds high-bitdepth loopfilter, temporal filter and postproc functions

Change-Id: I81c8a9176890784686bc4f2af0d550d243b3b2d3

The rd_thresholds are adaptively changed based on best mode tested.
It was only changed for the same block size, this commit makes the
adaptation for similar block sizes too. The commit also made minor
adjustment and code cleanups.

The impact on encoding time for _ped:
118089 ms -> 111927 ms

The impact on compression:
derf:  -0.339%
stdhd: -0.303%

Change-Id: I8817fed1102350497f2ec631849e43f753878e5d

Change-Id: I0ca6746696d81657c035b0f6523c9af370da3c95

Adds code to return an integer cost list for NSTEP search. Then
uses it for pruned subpel search in speed 3.

derf: -0.06%
Speed on mobcal 720p increaes from 10.28 fps to 10.65 fps.
[Subject to further testing].

Change-Id: Ib591382d25b2c11bcaba9d3a27a93a9d1ab27a96

Change-Id: I453b3e0d946951665d5919248445fc4f3222d2ad

Change-Id: Ifb0915c94c2db48827ddbd446314cb6e3155b99c

Fix --disable-vp9 build

https://code.google.com/p/webm/issues/detail?id=857

Change-Id: I98eacab5aa4aa9a657647acadd8ce2bd1a4590c0

This commit removes a repetitive local variable declaration in
vp9_rd_pick_inter_mode_sb.

Change-Id: I1b0afa98ff1ecbfb46e17d3d1cee95d32c4309db

This commit enables an adaptive mode search order scheduling scheme
in the rate-distortion optimization. It changes the compression
performance by -0.433% and -0.420% for derf and stdhd respectively.
It provides speed improvement for speed 3:

bus CIF 1000 kbps
24590 b/f, 35.513 dB, 7864 ms ->
24696 b/f, 35.491 dB, 7408 ms (6% speed-up)

stockholm 720p 1000 kbps
8983 b/f, 35.078 dB, 65698 ms ->
8962 b/f, 35.054 dB, 60298 ms (8%)

old_town_cross 720p 1000 kbps
11804 b/f, 35.666 dB, 62492 ms ->
11778 b/f, 35.609 dB, 56040 ms (10%)

blue_sky 1080p 1500 kbps
57173 b/f, 36.179 dB, 77879 ms ->
57199 b/f, 36.131 dB, 69821 ms (10%)

pedestrian_area 1080p 2000 kbps
74241 b/f, 41.105 dB, 144031 ms ->
74271 b/f, 41.091 dB, 133614 ms (8%)

Change-Id: Iaad28cbc99399030fc5f9951eb5aa7fa633f320e

warning: comparison between signed and unsigned integer expressions.

Change-Id: Ib6ee7500fe910983f290fc321ad89c0ab9989455

mi_grid_* are arrays of pointer to pointer. They save the pointers that point
to the MIs in cm->mi. But they are unnecessary and complicated. The original
goal was to remove MODE_INFO_t copy. But with an extra MODE_INFO_t pointer
inside MODE_INFO_t, same goal could be achieved.

This commit totally removes the mi_grid_* structures. But there are still
many dummy MODE_INFO_t inside cm->mi which are a waste of memory. Next commit
will do on-demand MODE_INFO_t allocation in order to save these memories.

Change-Id: I3a05cf1610679fed26e0b2eadd315a9ae91afdd6