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Move computing the class0_fp_cdf and fp_cdf tables per coded mv
 symbol to computing it only when the probabilities are updated.

Change-Id: Ib4957c8ab21e6189bcc3817a07b7681dfb343223

Move computing the class_cdf table per coded mv class symbol to
 computing it only when the probabilities are updated.

Change-Id: I6c4a9075817e8ba2e251f0e82436995f08f2ec5c

Move computing the joint_cdf table per coded mv joint symbol to
 computing it only when the probabilities are updated.

Change-Id: If5d195f70e6fad7b60f69606c8386ad5e69657d2

Move computing the inter_mode_cdf tables per coded inter mode symbol to
 computing them only when the probabilities are updated.

Change-Id: I7a7b059ee75723cb6f278ed82a20cf34c27915d8

Move computing the uv_mode_cdf tables per coded intra mode symbol to
 computing them only when the probabilities are updated.

Change-Id: I627b59d30726c913f5d7ba7753cb0446a12655bb

Move computing the y_mode_cdf tables per coded intra mode symbol to
 computing them only when the probabilities are updated.

Change-Id: I8c43d09b8ef5febe2a3ec64bd51d28bd78ea73ed

Move computing the kf_y_mode_cdf tables per coded intra mode symbol to
 computing them only when the probabilities are updated.

Change-Id: I5999447050c2f7d5dbccde80bee05ecd1c5440ab

Cherry-pick Daala b5020bee:
 Remove redundant test in od_ec_decode_bool_q15().
Using a test that decodes 100M random binary symbols, making this change
 produced a speed up of 8.81% with gcc-4.9.3 and 3.71% with clang-3.7.1,
 both compiled with -O2.

Change-Id: If6d0077a56121a575ae53bcd4d1d9b7d800a317d

This CL will facilitate adapt_scan experiment.
In adapt_scan experiment, dynamic scan order will be stored in
AV1_COMMON

Change-Id: I4763ea931b5e1af54d4f173971befeb01a4db335

Change-Id: Icda975cd9b264c1752c3057bce8031791f91c08a

Use the table access to retrieve pixel numbers from tx_size.

Change-Id: I9459f2c3292c2f9ddf963f16b79e142de7432031

* changes:
  Palette: Use inverse_color_order to find color index faster.
  Rewrite some loops to avoid -Wunsafe-loop-optimizations warnings.
  Remove some useless casts
  Add compiler warning flag -Wextra and fix related warnings.
  Declare some array sizes to be constants (known at compile time).

* changes:
  Add complier warning -wunused.
  angle estimation: Some renames/tweaks to sync with aomedia code.

Change-Id: Ide4e9b3a605571ec41c265347217e103df8d0821

Handle the sub8x8 chroma component at the unit of 2x2/4x2/2x4 level
and use the motion vector inherited from the luma component. This
improves the coding performance:

lowres 0.4%
midres 0.25%
hdres  0.15%

Change-Id: I34dff4218cfa3e5d55e7ed0341f36f4719389f7e

Remove the separate implementations of set_contexts() in encoder
and decoder.

Change-Id: I9f6e9b075532faae0f74f885d9443589254258a7

Change-Id: I1da08afaa945ca1aaf4bf9f50cf649a7feef2e60

The av1_mv_class0_tree is a balanced tree with two leafs and can
 simply be coded as a boolean with probability class0[0].
If CLASS0_SIZE is ever changed from 1, this change will need to be
 reverted.

Change-Id: If294dac825a5f945371092c74aa8e3f84cd962b6

When building with --enable-daala_ec, the tx_type for intra blocks can be
 coded using the CDFs that are updated once per frame.
This patch converts a tx_type symbol to be coded with aom_write_symbol()
 and aom_read_symbol() that was missed in f3e8e267.

Change-Id: I34f8fef7525f88e156bbcb78dfc48994367610ce

Change-Id: I90ef3b49b499c2ac9c24797467cb4eb194fdf23b

The duplicate breaks build.

Change-Id: I0f16761c4bcb8563402a664013429403b883c2e1