Assertion happens for invalid input data, the commit replace the
assertion with returning error.

Change-Id: I1b73ae752d64882d984cd23936efe75a757c2b41

Change-Id: I698e8df9b336d38bffe01e656acba00d4003695f

The commit added check to make sure no invalid memory access even when
the decoder instance is never initialized.

Change-Id: I4da343d0b3c78c27777ac7f5ce7688562c69f0c5

For bad input data, the decoder may access the array out of bounds. The
commit added clamp to prevent such out of bound access

Change-Id: I0a1cfd9b8786ea7113a998053c76605c963b077a

Change-Id: Icbcf68b5b685a56f255ebc3859c9692accdadf9e

This commit moves token_cache buffer into macroblock struct, instead
of defining as a local variable in cost_coeffs. This avoids repeatedly
re-allocating memory space in the rate-distortion optimization loop.

The runtime at speed 0 reduces:
bus 2000kbps, 161692ms to 159951ms
football 600kbps, 229505ms to 225821ms

Change-Id: If7da6b0b6d8c5138a16271a33c4548fba33d8840

vp90-2-07-frame_parallel.webm:
vpxenc stefan_sif.y4m \
  --codec=vp9 -p 2 \
  --frame-parallel=1 \
  --limit=10 \
  --auto-alt-ref=1 \
  --lag-in-frames=5

Change-Id: I7381a69aaaec238b309169a51b34cb6bf29a9c50

"-no-prec-div" option helps codec performance, so it was added back.
"-no-intel-extensions" was added to suppress link warning #10237.
option '-use-asm' is deprecated and removed.

Tested icc 32bit build and 64bit build.

Change-Id: I736ec2619857efd425ef76338dc52f8fbc0bcc7e

Also renaming dest_stride to stride in some places.

Change-Id: I75f602b623a5a7071d4922b747c45fa0b7d7a940

Using TREE_SIZE for the following trees:
  vp9_intra_mode_tree
  vp9_inter_mode_tree
  vp9_partition_tree
  vp9_switchable_interp_tree
  vp9_mv_joint_tree
  vp9_mv_class_tree
  vp9_mv_class0_tree
  vp9_mv_fp_tree

Change-Id: I0212bb4c1ee6648249f68517e28a67a56591ee1b

Renames:
  vp9_iht_add       -> vp9_iht4x4_add
  vp9_iht_add_8x8   -> vp9_iht8x8_add
  vp9_iht_add_16x16 -> vp9_iht16x16_add

Change-Id: I8f1a2913e02d90d41f174f27e4ee2fad0dbd4a21

`round` is defined in the runtime library now.
https://codereview.chromium.org/23922008/

Change-Id: I3852740058d32f63ce283579acbe284865e32dba

Renames:
  vp9_short_iht4x4_add     -> vp9_iht4x4_16_add
  vp9_short_iht8x8_add     -> vp9_iht8x8_64_add
  vp9_short_iht16x16_add_c -> vp9_iht16x16_256_add

Change-Id: Ibca7a188fd062b196787ac5efc1ea545e7f166c0

Also adding static to iadst16_1d and fadst16 functions.

Change-Id: I13c7df3b776f0f8efc6e80099bdb0a2f6d29edaf

Values of MODE_UPDATE_PROB and VP9_COEF_UPDATE_PROB are equal, so replacing
them with one constant. Inlining appropriate arguments for functions:
  vp9_cond_prob_diff_update (encoder)
  vp9_diff_update_prob (decoder)

Change-Id: I1255a1cb477743b799b3bfbbcd8de6b32b067338

Converts the constant rddiv parameter to 128 (from 100) and
implements RDCOST with bit-shift rather than multiplication.
Other parameters are also adjusted to roughly keep the same
balance between Rate and Distortion.

There is a slight speed-up of about 0.5-1% (at speed 0) as
testted on football_cif.

There is a slight change in performance due to small change
in the parameters.
derfraw300: +0.033%
stdhdraw250; +0.102%

Change-Id: I70ac69f58fa71c83108f68fe41796cd19d1fc760

The commit changes to mask available intra prediction modes for test
based on prediction block size.

With this patch, encoding time of CpuUsed 2 reduces from 10% to 20% for
HD clips with a compression drop of 0.2%

Change-Id: I65f320f1237c0f5ae3a355bf7caf447f55625455

Minor code cleanup.

Change-Id: I47c1f794842d4570bb39cfd23b80f54f5606bba6