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Uses highbd_ prefix convention consistently.

Change-Id: I58f7f799a7ff8e32701bcd71c955bcf1cdd4581e

Change-Id: Ie51c352a6b250547207cbc1ebba833a01ed053e3

This patch checks that a decoder never tries to reference frame that's
outside the range of 2x to 1/16th the size of this frame.  Any attempt
to do so causes a failure.

Change-Id: I5c98fa7bb95ac4f29146f29dd92b62fe96164e4c

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: Ic4fc01be7738fbabf8c7860dbe3476ab4caf5fc2

Change-Id: Ic334da9aee968e33762c2b25d9fbad24c844b411

Moving back to scale_factors struct. We don't need anymore x_offset_q4 and
y_offset_q4 because both values are calculated locally inside vp9_scale_mv
function.

Change-Id: I78a2122ba253c428a14558bda0e78ece738d2b5b

The ref's scale_factors are set at frame level, and then copied for
each partition block. Since the struct members are mostly constant,
this patch separated the constant and non-constant members, and
reduced struct copying. This gave 0.5% ~ 1.4% decoder speed gain.

Change-Id: I94043bf5a6995c8042da52e5c661818dfa6f6d4c

Change-Id: Ia7969baac7ffc6d7a0e8e8e83e9252d077a3c5b3

Change-Id: I481d9bb2fa3ec72b6a83d5f04d545ad8013f295c

It is possible to have invalid scale factors and not access them
during decoding. Error is reported if we really try to use invalid scale
factors.

Change-Id: Ie532d3ea7325ee0c7a6ada08269f804350c80fdf

Change-Id: Ieb7077ca3586b9491912027eed450a4f6fd38d30

We support only [1/16, 2] scale factors, enforcing this now.

Change-Id: I0822eb7cea51720df6814e42d3f35ff340963061

Change-Id: I531829e5aee2a4a7a112d528ecccbddf052d0e74