In vp8, statistics are collected about the different modes as they are searched.
This process is more complicated due to the variable block size. Fields were
added to the PICM_MODE_CONTEXT struct to hold this information for each point in
the search. The information is then taken from the appropriate part of the tree
during denoising.

Change-Id: I89261ab77ad637821287ae157dfdf694702b8e77

This commit fixes a mismatched use case of block size in non-RD
intra prediction check. The residual SSE and variance should be
calculated per transform block size, instead of operating block
size, which caused chrome valgrind warning on conditional jump
based on uninitialized value (webm issue 823). This commit
resolves this issue.

Change-Id: I595c06599c7e0fd0e4a08736519ba68fc14bc79a

Also fix bugs related with corrupted frame handling.
Return VPX_CODEC_CORRUPT_FRAME when getting corrupted
block.

Change-Id: I7207ccc7c68c4df2b40b561315d16e49ccf7ff41

Removed 2 unnecessary assertions.

Change-Id: I0f8877d0494bf3ecdb0d7931ccbcaa8289e01d8b

Change-Id: I3d9130e726a1299fd258f6dfe93315e2d12f76da

Changed to use defined inline functions consistently through
the code.

Change-Id: I7644d24fa7a837378564a6e0790416d3725dd200

Use a weaker filter for second level arf frames.
Average gain across all sets and metrics ~0.3%

Remove code for arnr_type which is no longer
supported in VP9 which always uses a centered blur.

Re-factor and some cleanup.

Change-Id: Ieb4b8940e99e4e02b3fcc9fca6f2d4109e6ed639

Change-Id: I6ad6fd75dc3c9e6218d88148cf49e205398e2af5

restore the environment post encode/decode failure

Change-Id: I3c72e2260a616432eaf1f9545d4fb4d8e45cc7b0

pull the latest from libwebp.

Original source:
 http://git.chromium.org/webm/libwebp.git
 100644 blob 264210ba2807e4da47eb5d18c04cf869d89b9784 src/utils/thread.c

commit 46fd44c1042c9903b2f1ab87e9f200a13c7e702d
Author: James Zern <jzern@google.com>
Date:   Tue Jul 8 19:53:28 2014 -0700

    thread: remove harmless race on status_ in End()

    if a thread was still doing work when End() was called there'd be a race
    on worker->status_. in these cases, however, the specific value is
    meaningless as it would be >= OK and the thread would have been shut
    down properly, but we'll check 'impl_' instead to avoid any potential
    TSan/DRD reports.

    Change-Id: Ib93cbc226a099f07761f7bad765549dffb8054b1

Change-Id: Ib0ef25737b3c6d017fa74822e21ed58508230b91

Change-Id: Ifc741da9da6f61c8d3c1f675ec6b8a96570f877d

Currently, vp9_diamond_search_sadx4() is only called when sse3 is
enabled, which is improper since sse2 optimization of sdx4df
functions are available. Changed to always use
vp9_diamond_search_sadx4().

Change-Id: I4b95d6b7a3c6c645783c373f0ba8d645ece24717

- fix indent, spelling
- drop some whitespace in some comments
- add an assert in vp9_setup_mask, it shouldn't be called on decode
  error

Change-Id: Ic312a815e977a6f9cb81ceb7b039eeada76c5aa0

There are sse2 optimization of sdx4df functions. Instead of calling
vp9_refining_search_sadx4 only when sse3 is enabled, call it always.

Change-Id: I24f93818f7d4209d1425039e0eb099ff9ff08fe9

Change-Id: I3a3ceeeed489f8b1ccd7199ff97f3fb991bbf5a4

Deleted vp9_find_best_sub_pixel_comp_tree(), and combined it in
vp9_find_best_sub_pixel_tree().

Change-Id: Ifb25763c8b19822df5537cc1daa76ce88dc3b056

Use FAST_HEX in speed 5 and 6, which covers more points than
FAST_DIAMOND and improves motion search quality.

At speed 6, RTC set borg tests showed slight quality gain (psnr
gain: 0.143%, ssim gain: 0.226%). No noticeable encoding speed
change.

Change-Id: Ifa62875d9a52ee382ec494f271382bb77d8c67bf

This commit combined the full pel and sub pel motion search into a
single function to avoid code duplication. The commit does not change
encoder outputs.

Change-Id: Ibe18342c4f64073bef20f9cf6c6ca0a20d01bf0d

in a failure case the threads may still be running and share a reference
to VP9_COMMON

Change-Id: I867034b4b55f133663b8cbf6ca06e72acf952849

This commit enables a new quantization process for 32x32 2D-DCT
transform coefficient blocks. It improves the compression
performance of speed 5 by 1.4%. The overall compression gains of
speed 5 due to the new quantization scheme is 4.7%. It also includes
the SSSE3 implementation of the 32x32 quantization process.

Change-Id: I0855b124fd6462418683f783f5bcb44255c9993b

This patch fixes bug 633:
https://code.google.com/p/webm/issues/detail?id=633

The first decoded frame does not have to be a keyframe,
it could be an inter-frame that is coded intra-only.

This patch fixes the handling of intra-only frames.

A test vector has also been added that encodes 3
intra-only frames at the start of the clip. The
test vector was generated using the code in the
following patch:
https://gerrit.chromium.org/gerrit/#/c/70680/

Change-Id: Ib40b1dbf91aae2bc047e23c626eaef09d1860147

In the previous version, only certain buffers in the macroblockd were saved and
the restored. In this version, all of the buffers are saved and restored. The
code was then rolled into a loop for readability.

Also contains a tiny fix for when the -DOUTPUT_YUV_DENOISED flag is used.

Change-Id: Id925ef8b3fa122ae88acfa1d9a1e4df45df83518

This makes it possible to use --rt --cpu-used=8.

Change-Id: I8b5bc4449b6e05d24d25145e35b4793501268c59

Prepare for frame parallel decoding, the reference count buffers
need to be protected by mutex. Move vp9_thread.* to common
folder so that those buffers could use cross-platform mutex
from vp9_thread.*.

Change-Id: I541277cf15eefed6641555944f67f4a0bcdc8154

This commit further simplifies the SSSE3 implementation of the fast
path quantization process.

Change-Id: I5be3286ec0f1bd81d1cf5be3168fece6384fb9ca

Change-Id: Id6eedc502c86433df1456dd994aee6bc9a1359a2

* Replace max_step_search_steps with constant MAX_MVSEARCH_STEPS
* Fold (reduce_first_step_size + speed > 5) into reduce_first_step_size
  replacing uses of reduce_first_step_size that don't add the speed
  check with zero.

Change-Id: Iae46395dbf3eaca138bf4d18b838a9e364b5a198

The y4m extension used is the same as the one used in ffmpeg/x264.
The patch is adapted from the highbitdepth branch.

Also adds unit tests for y4m header parsing and md5 check
of the raw frame data, as well as y4m writing.

[build fix for Mac/VS by not using tuples with strings]

Change-Id: I40897ee37d289e4b6cea6fedc67047d692b8cb46

Reverting "Adds support for reading and writing 10/12-bit y4m" for now because of Mac Build Failure.

This reverts commit 82dc1332

Change-Id: I824bf42bf47c7df6985c79e451d6af913030d374

Change-Id: I39a37335ba5b3a969d328afb1f425ddb2cf7ddda

vp9_rdopt is for making rd optimal mode decisions. vp9_rd is for all
other rd related routines. Anything used outside of making an rd optimal
decision belongs in rd.

Change-Id: I772a3073f7588bdf139f551fb9810b6864d8e64b

Change-Id: I262ecac02d376de83097bb40f744f5584e987603

Moved the threshold adjustment before reference flag checking,
which could set the threshold to INT_MAX for disabled reference
frame, and cause overflow if the adjustment is done after that.

Change-Id: I85e94f8726d5e3ae93f65965aa978721dddc9957

Renamed updating_running_avg() to filter(). Extended function with the rest of
the filter procedure. Made all of the empirically-determined constants used in
VP8 into functions so they can be tweaked more easily.

Change-Id: I41730c8c92370c76885950a43742347477ca4e7e

As in VP8.

Currently, this parameter is set with the VP8E_SET_NOISE_SENSITIVITY flag.
The flag was not renamed so that we don't break the interface for webrtc. This
should probably be changed at some point in the future.

Change-Id: Ic73fcb0dde9d1d019e9d042050b617333ac65472

Change-Id: Icbe05657f0e92c3838e6a5a975f4f82d21328a2e

Add test code to turn multi-arf on and off depending
on group length and zero motion.

Changes to active max group length for mult-arf.

Fund second arf only from normal frame bits.

Change-Id: I920287fac1c886428c15a39f731a25d07c2b796c

This commit added a speed feature to control the step_param used in
full pixel motion search. The intention is to reduced the search
steps for high speed real time coding.

Change-Id: I21d2f0105c2b647783a6688615da7fcf2b6d670b

Adapt the use of segmentation in AQ mode 2 based on
the ambient kf/arf/gf Q.

Disable segmentation where the rate per SB is very
low and overheads are likely to outweigh the benefits.

This patch reduces the -ve average metrics impact
of AQ mode 2 while allowing stronger 3 segment AQ
in some cases. Average improvement ~0.5-1.0%.

Change-Id: I5892dfcc7507c5cc6444531cc7fe17554cf8d0c7

The y4m extension used is the same as the one used in ffmpeg/x264.
The patch is adapted from the highbitdepth branch.

Also adds unit tests for y4m header parsing and md5 check
of the raw frame data, as well as y4m writing.

Change-Id: Ie2794daf6dbafd2f128464f9b9da520fc54c0dd6