This patch allows the encoder to skip the
un-neccessary motion search in the first pass. It
calculates the error of the zero motion vector using
the last source frame as reference and skips the
further motion search in the first pass if the error
is small.

The encoding speedup of the first pass for slideshow
videos is over 30%. Borg test shows the overall PSNR
performance remain approximately the same (derf -0.009,
hd 0.387, yt 0.021, stdhd 0.065). Individual clips may
have either PSNR gain or loss. The worst PSNR perfomance
is from yt set, with a PSNR loss of -1.1.

Change-Id: I08b2ab110b695e4689573b2567fa531b6457616e

Add a set_mode_info_seg_skip function that fills the requisite mode info.

Change-Id: I460b1b6845d720d9b09ed5b64df0ea0aac443f62

* Only use ZEROMV, disalowing the intra modes that were previously
  tested.
* Score rate and distortion as zero.

Change-Id: Ifcf99e272095725f11da1dcd26bd0f850683e680

Change-Id: I33a38bb9f46e7ef509bbbf0cfd7bc3ea5072d022

In non-rd real-time mode, choosing smaller transform size in
encoding gives better video quality and good speed gain than
choosing larger transform size. This patch set tx size search
method to ALLOW_8X8, which is better than using 4x4 or other
larger sizes.

Borg tests on rtc set at speed 6 showed significant gain on quality.
PSNR gain: 11.034% and SSIM gain: 15.466%.

The speed gain is 5% - 12% for <720p clips, and 2% - 7% for
720p clips.

Change-Id: If4dc74ed2df359346b059f47fb73b4a0193ec548

Use of stack frame variable "fps" beyond the lifetime of the function.

fps is sent as a paremeter to output_stats and stored in the
packet holding this encoded frame. This has scope beyond the
lifetime of the calling function.

This reverts commit 3f95a230

Change-Id: Icd8e14b3d7dd733590ada12e619b9dce95b6b0f5

This is not a speed feature, adding inline function instead.

Change-Id: Ia48c41802eec9e92cf990339d724097279695c9a

Change-Id: Ib8187c8f2556e1e9268b0683cd2b6ff3489f0205

Produces sane qindex for the first frame in 1-pass constant and
constrained qualirty modes.

Change-Id: Ib2a5091df15a23489e9bb5534a2019cf2689755e

Change-Id: I61bd0b127164a591b1c983bfcebd64ba7617f796

Change-Id: Ifcb46e6904730d14b9ef76b648b4d0dc3cd5d0c5

The same enum defined and used in vp9_mvref_common.c.

Change-Id: I3975103997797add0a258d36c96d20ac9561a73d

Change-Id: I9b683c8647a864e74073161f4aa6f2911b7825e3

The third array element was unused. 2 elements now: key- and interframe.

Change-Id: I5b8b9f5d889cc96a204cedfc432059293256298e

The SSSE3 implementation might find a potential overflow issue in
its second 1-D transform, if all input residual pixels are close to
255. This commit fixes the issue and re-enables the unit test on
the SSSE3 version.

Change-Id: I0520478abdab7afd3ff2842516bec951111e9b3c

Change-Id: Ib35ff854378764dc3c6745844c67a33dee545663

Right now there is just one place to check: xd->lossless and for the first
pass there is a function is_lossless_requested().

Change-Id: I949a6834e64ce51e422e2892f097f2b871b5429a

In Aq mode 2 for kf/arf/gf the segment q delta
is calculated and then applied by re-quantization without
going through the rd loop again. If the base Q != 0
but the segment Q == 0 (lossless) this can could give rise
to a situation where we have an illegal combination of
transform size and Q. (Q == 0 requires that all blocks
are coded 4x4 WHT).

Change-Id: I241a58c6494ed442e9e4630070b0cde0fb99ae45

As a side-effect, the sad unit tests for VP8 and VP9
had to be separated.

Fixes a bug in original patch:
(https://gerrit.chromium.org/gerrit/#/c/70163/8)
that was reverted due to a nightly test failure.

Change-Id: Ia2a4e9e278fd3c89d6c3c82fcc6381320ec2a8a6

Revert "Fix a problem of using an uninitialized parameter"

This reverts commit 538af7db

Change-Id: I071aa9b7068ef515abb8ae9584df15067706ccb5

This reverts commit 91655042

Change-Id: I500822b03f09c64ff6ec5396c68edee9ca3b75cb

This commit added a call to set speed feature before initializing
motion search, fixed the problem where unintialized search method
is used before its value being set.

Change-Id: I537e4612bf0d00fd6f51396fd222d4b3bd6fde58

Change-Id: Ie11558c076a0161cc9608788e050b1b16e31c490

Making this consistent with intra mode masks: you need to specify
allowed inter/intra modes to use.

Change-Id: Iaecd28bf79047259707d8e7a59a57bb7b856383e

Change-Id: Ibdd5255d37200fb8a1d50f71a2a49c6089ae21e7

SEG_LEVEL_SKIP requires the block size to be at least 8x8. Attempting to
use it on smaller partitions causes the decoder to reject the bitstream.

Change-Id: Ia7188cdf8ae5ac1df6bd29f3f80dbb0610e1f7b1

This aligns the encoder behavior with the decoder.

Change-Id: Ifa0840e4b07b19309e0bf1d1182498883249ec45

Change-Id: I87b7c657d8813d7fb383ab519d150c0ffb1dd377

Change-Id: Id3d0a49836fe996b806707d29a8130acf9d7ea0e

Change-Id: I58baa1da1f3bfc8a6da454399139fe6a7473ff10

Change-Id: I42d83f91e272c92daed604c233f74439fe6307c5

Change-Id: I89a1dbea39c50c7633f746d9c93fec3a289f1b42

Change-Id: Ie517ac06385133ffb3bbc449d9f23240f245976d

Change-Id: I2c6950e7d79fc89c6f97e6dcf47317ef66c453a5

Change-Id: I6db1dc82f66438ac48f571d2f1a2ac7c39a97a1a

The new constant expands to 0x3fc00808.

Change-Id: Ib5109e4faf035fe0402b59f8a8d2e412628b9276

Change-Id: Id8877fad1f1e88b145e7c40c43174109b9c4f373

rd.tx_select_threshes is cleared in encode_frame_internal().

Change-Id: Ie03776a41c585f13b392a9b62d4e91ef26ebeaf0

Change-Id: I935ec0e78570ce3d3585f972350e39043eefa30a

Change-Id: I5ec336848f6489c31cf2b645026fa2025db07466