Remove the codec-specific global prefix from static function names.

Change-Id: I61b2d5f2b7b5fb9dc8bc357d5493ea44df8ab19d

The various tap loop filter operations are common functions across
codec. This commit moves them along with SIMD optimizations to
vpx_dsp folder.

Change-Id: Ia5fa0b2e5289cdb98467502a549c380b9c60e92c

In aq-mode=3 under a resizing action (i.e., resize_pending != 0),
force an update of the golden reference frame.

Change-Id: I14806f6db71b5f8c827678cc5e1fc913c138a9a4

Move the clamp functions to vpx_dsp_common.h file. Clear out the
dependency of vp9_loopfilter_filters.c on vp9_common.h file.

Change-Id: I9c4b928bcd7f597106b5aa96354356d3775a3431

This cleans out the unnecessary dependency on vp9 codec-specific
data structures.

Change-Id: Iadbe431174a0f9bf9423f39ab854fc18be554bea

Use drop_frames_water_mark for threshold on buffer underflow,
and change threshold for resize down.

Change-Id: I2de19adce50abe9bcdc0b107528cec8cc1857fcc

BUG=https://code.google.com/p/webm/issues/detail?id=1023

Change-Id: I212a1d67b23ce3b5ce08800de369b25b9e375e7d

The fast scaling for 1 pass mode was being used only on the
first frame after resizing event (because resize_scale_num/den
is set to 1 and only changed for first frame following resize event).

Change-Id: I723b63e21823eb858f25f5662d2bbe4f1842e61f

Proper use/update of resize_state and resize_pending to constrain
the total amount of downsizing to be at most one scale down, for now.

Change-Id: Id18fc32499f2fbdbec16728dcdc9e4eac09098f0

Roughly half as many cycles as plain C.

Change-Id: I8c16c29940b76d54ee7e4fb874c328ce90bff5d4

From Change  Ibf0c30b72074b3f71918ab278ccccc02a95a70a0
There is still an issue relating to one animated test clip with repeat
patterns where this change effectively increase the default  maximum
arf interval by +1. This can be examined seperately.

Change-Id: Idd01d5480fc45202d8a059a0c3afc0997cc5bdd1

Flaten the intra block decoding process. It removes the legacy
foreach_transformed_block use in the decoder. This saves cycles
spent on retrieving the transform block position.

Change-Id: I21969afa50bb0a8ca292ef72f3569f33f663ef00

This commit simplifies the intra block boundary condition logic.
It removes the block index from the argument set.

Change-Id: If00142512eb88992613d6609356dfd73ba390138

This reverts commit f8d35016.

Change-Id: If8c7af403c091b7fb447a6f0c73fecdbccbc51b3

This reverts commit 9b4f9f45.

Change-Id: I23545ac8c7464127f7466fc6a58de517874fe0cf

Use faster scaling on source.

Change-Id: I968df97239a86834c96126b86832d3d6d0875a53

Eliminates the byte by byte read from bool decoder,  by reading
in a size_t and then shifting it into place.

Change-Id: Id89241977103fc3b973e4ed172a5cbf246998e5d

Also some log2 lookups.

Pass in 8x8 block width/height and log2 num4x4s instead.

Change-Id: I8ea9a1ec1e0bbab23f8ba556954a1b5433f4d613