Changes in this patch are only enabled if configured with
--enable-experimental --enable-vp9_high
Using a encoder command line argument of --input-shift=0 tells the coder
to work with 16bit framebuffers.
The output should be identical to before. Some features (such as input
image resizing) are not yet supported in 16bit mode.
Specifically, the behavior of the input-shift parameter is as follows:
* No argument : Behaviour as before, using 8bit frame buffers
* --experimental-bitstream --profile=2 --input-shift=0: Uses
16bit frame buffers to store 8-bit data, should give identical output
to before.
* --experimental-bitstream --profile=2 --input-shift=2 --bit-depth=1: Uses
16bit frame buffers to store 10-bit data, encodes a version 2 stream
with bitdepth 10
* --experimental-bitstream --profile=2 --input-shift=4 --bit-depth=2: Uses
16bit frame buffers to store 12-bit data, encodes a version 2 stream
with bitdepth 12
The decoder has an --output-shift argument which should be used when
decoding profile 2 streams.
So far support for the following has been added:
Intra filtering
Deblocking
Motion compensation
Variance calculation
Sad calculation
Transform
Change-Id: If345c88234aafdd40caea0d88935b1f07aaebe22
bdd7f74c3f