Change-Id: I213f3111fc0656aecd1303a8b871ecded2b92bc2

This prepares the integration of rectangular transform block size
with recursive transform block partition system.

Change-Id: Id96aa3790dace15619c665f438241938992d1730

Remove redundant experimental flag. This does not change the coding
statistics.

Change-Id: I35b3cb04025c5c2d2744312e5efc00d0473c990d

Upsampled references currently increase the size of references by
64 times. This patch limits the memory used by the encoder to
about 3GB when encoding high bit depth content.

This should be re-evaluated in the future, if doing 8-tap
resampling in the motion search becomes reasonably fast, or if
the upsampled references are reduced in size (by omitting some
subpel positions and interpolating them instead).

Change-Id: I6d84ff0d6202ec46f4fa53e268e68aa808e5df85

Count the transform block partition context in the unit of pixels.

Change-Id: Ibb66f053526ed347ad0274b78db7ac35cc086b0e

Reverted commit: f8306bfd (with some changes).

Reason: This was triggering an assert in debug build because of zero
probability values. So, using an "UNUSED_PROB" macro to replace these to
retain clarity.

Assertion failure can be reproduced as follows:

$ make clean; extra_cflags='-O0 -g -fno-inline' ../../configure
--enable-debug --enable-experimental --enable-palette && make -j 16

$ ./aomenc -D --codec=av1 ~/videos/screen_content_set/gimp.y4m -o
/tmp/foo.webm --tune-content=screen --limit=50

Pass 1/2 frame   50/51      8976B    1436b/f   86169b/s 2902620 us
(17.23 fps)
Pass 2/2 frame   25/0          0B 2933053 us 8.52 fps [ETA  unknown]
aomenc: ../../av1/encoder/cost.c:46: cost: Assertion `prob != 0' failed.
Aborted (core dumped)

Change-Id: I47a76b8f415060909bc8448fae3002857eb61d8e

- Library size reduces: 165 kB, 292 kB (HBD).

Change-Id: I50cb630dde326bd2a28c0db4b7e2d53c2fd94a2a

This commit allows the partition context model to account for the
maximum transform block size of the coding block.

Change-Id: I22b91e85fff70faa974afd362ce327d3f2eda81d

Change-Id: I5fb4898045a481f7996c2ad019d2f741aab08fc7

- Add unit tests to verify the bit-exact result.
- User level time reduction (EXT_TX):
    encoder: 3.63%
    decoder: 2.36%
- Also add tx_type=V_DCT...H_FLIPADST SSE2 for 16x16 inv txfm.

Change-Id: Idc6d9e8254aa536e5f18a87fa0d37c6bd551c083

1. Avoid compiler warnings.
2. Enable prob_diff_update() required by update_txfm_probs().

Change-Id: I9081b645c55a8432bdaeb600e9ba901c0d0d96f5

Change-Id: I252c2f06dfe256d2d33fd1abc42aaadf50273cc8

Change-Id: I93b191a522ed3e3ca9a363beab4292f64e869610

Change-Id: I9f52ddb53b39cefd2e0ee7144203e1f3958d01aa

Change-Id: I2047adc4c147201ce0ce3c533fe2861cbff1002c

Change-Id: I7d2414a8766141d5109b599271179bc505c772d3

Start adding cmake build support. This is based on the generic-gnu
target and will not build anything. It simply produces a project file
(when generating for a IDE) that can be loaded and that allows for
interaction with (most of) the aom sources used in a generic-gnu
build.

Notable missing pieces:
- flag testing
- config generation
- experiment configuration
- enable/disable encoder/decoder
- aomenc/aomdec
- all third party library build integration
- all tests

Change-Id: Iaeda0b03d58591a26a8fb54f63a2aa3b5354e3a6

Change-Id: I932dd9c8b43a20d248c00847b19dff88e6eb11be

Replace redundant separate handling to retrieve the context value.

Change-Id: I18dde4599cd08ffe33a78694ec377487609de1b1

Change-Id: I4615e8e64d75b1f4277d2221ec94c5d4f1830aa4