For real-time mode under cbr, this increases the gain (5-10%)
for speed 5 (none/little change for 6), on vc-clips.

Change-Id: I9b38beeb3c820de22c43a0ba53a9456168dd24ba

Turns off the DISABLE_RC_LONG_TERM_MEM macro and makes other changes
in the way the bits are updated, to make 2-pass rate control track
target bitrates closer.

Change-Id: I5f3be4b11c2908e6a9a9a1dd4fcf4e65531c44d8

Parameterize the frame level quantization index used in non-RD
coding flow with cbr.

Change-Id: I79cfbd9c32c0d0fc33ad720d2180432e910baf7a

This commit reduces the frequency of frames using finer quantizer
in non-RD coding flow, and slightly tune up the quantizer resolution
when used. It provides 1.7% compression gains in speed -5 at no speed
difference.

Change-Id: I430249a51260a841a0402666e5ec1566e4f7d5a6

The new tolerance is a little higher than before (especially
for kf/gf/arf) so this change gives an encode speed up
for some clips up for speeds 0-2.

Change-Id: I63f7d6c9cc11c7f58742f41e250dcd3eab1741eb

Change-Id: I1d8c312a599db505a023e5cd0cc4ba2b8f696a2e

Change-Id: I4341d16ef83acd1cc9e55f7c5eff4af921bf57d4

Change-Id: I88e018442c527cf21eac791f0768e805dda244f1

This code/setting was actually not used (since speed features were not set on first frame,
until a recent change) and should be removed.

In CBR mode, the q value for the first frame can be controlled by setting
the target size via the parameters rc_buf_initial_sz (and max_intra_size_pct).

Change-Id: I65afc64972b36c449bd5a8c25800e65da5389066

Renames:
  mi_8x8 -> mi
  mode_info_stride -> mi_stride

Change-Id: I66f3e5fd1e7b7f46f108af5bb711c5fd9493c1be

Change-Id: I4de07d3ef81ebba759a983207d9ca768a65220a6

While encoding a frame, its last frame source can be used to give
acurate motion information. This patch prevents last frame to be
overwritten so that it is available during current frame encoding.

The last source is scaled when it is necessary. cpi->Last_Source
points to the last source frame.

Change-Id: I0e1ef5e9e1d2badf9d0c7a1a44a7ed5b24c09425

Change-Id: Ie2ea9dd8bd338cc9fe12ca9033df64f7644c68b3

Use a crude correction factor to correct for
lower compression efficiency at higher encode
speeds when estimating the max Q for the
clip.

Change-Id: I5ae377647f4adf5e91d700a8791fb3b8f70efc73

This fixes active map for non-rd realtime speeds.

Change-Id: I1bf416de3f7ef2e5dd2eabde052cce3c0683a52c

This commit optimizes the bit allocation for the non-RD coding flow.
It applies slightly better quantizer to the frames, where all blocks
run a non-RD partition search. Such frames typically have better
rate-distortion trade off, thus improving the reconstruction quality
for next few frames reference at reasonably low increment in rate
cost.

The coding performance for rtc set at speed -5 with error-resilient
tuned on and rate control set as cbr is improved by 19.58%. It improved
the coding speed by about 10% for a portion of local test clips.

Change-Id: I9d56696cd4359dc8136ca10aff10fff05aaa2686

Change-Id: Ia6d7e7a08810e0c3401da4d10266828d560e6851

Change-Id: I2a169535489aeda3943fb5a46ab53e7a12abaa36

For very large size video image, the scaling calculation may need use
value beyond the range of int. This commit upgrade the value to 64bit
to make sure the calculation do not wrap around INT_MAX.

The change corrected the decoder behavior.

The bug affects only very large resolution video because the scaling
calculation was sufficient for image size smaller than 2^13.

This resolves issue:
https://code.google.com/p/webm/issues/detail?id=750

Change-Id: I2d2ed303ca6482f31f819f3c07d6d3e98ef3adc5

This commit adjusted the speed steps in rt mode to make the steps
more evenly spaced on speed and quality, specifically:
1. Merged 3 and 4 into one single step 3 and removed confilicting
features.
2. Move 8, 7, 6, 5 to be 7, 6, 5, 4 repsectively.

Change-Id: I38d56d61531f3561d772aef953c411c8fb38c063

Root cause is the different default register length between x86
and x64 platform. Change spatial_layer_id to long long.

Change-Id: If1a5972365c7a59f7e76cb4fd714610f3d48a8ff

Change-Id: I366850015004644c4fc7feabe27a782fdd8d8718

Change-Id: I3e20c0cdb9d2437bddf21afb255855f2dead8e02

Change-Id: I7d9874da8ff78a2d7e0cf11073af9c30538bc9a6

Change-Id: I4eb815156ecaab02c9182e6e1abbea0e4d86c441

Change-Id: If67ed8721f258883e41bab18f5c456505de68785

Change-Id: Ia6b1e3c5a8ac21219bbfe9eecdb4801f3eaa10e5

Change-Id: Ib09eedc17ea0ea2eec75d78112e4786d98f382aa

Properly obtain and buffer the segment_id in non-RD mode information
update process.

Change-Id: I43230001872f6a986d12c0d94e98fdec0db3be2c

Small speed gain for speed 1.

Quality is generally a little up for speed 2.

Speed 3 was similar to speed 4 but now positioned more
evenly between 2 and 4 speed and quality wise.
   (opsnr +5.6% ssim +8.25% across all sets)

Speed 4 is a little slower than before but sizable quality gains.
   (opsnr +3.7% ssim +6.8% across all sets)

The code has been cleaned up a bit so that for each incremental
speed step changes over the previous speed step are applied.
This makes it easier to see what is changing from one setting to
the next.

Change-Id: I2d98d0d6230af23486adaec01908f58942a7cdeb

Allow tx search for ARF and GF helps quality but a little slower.
Setting subpel_iters_per_step to 1 improves encode speed.
Setting sf->mode_skip_start = 10 improves speed.

Initial local results suggest overall impact on quality is neutral
but encode is up to 15% faster.

Change-Id: Ibde02cae6626a44c10a1da0cefe888afbb51f037

Removes a TODO. Changed meaning of some parameters
(target-max-percent refresh and starting index) to be
defined relative to superblock. Also, modify turn-off condition.

Change-Id: I5e55f372b7079c24f9cdac0b06fa34620dbf456b

Change-Id: Iffa45b9b04196c1ded6037622a8644a2500a62de

Change-Id: I0df8c2a6d9863f92ee406010f2daeb5e40627649

This commit enables the non-RD mode decision coding flow to
adaptively apply partition search in non-refresh frame, when the
collocated block in previous frame suggests there might be a motion
activity. It refactors the update_state_rt() function to support
buffer swap of mode_info struct, thereby unifying the encoding
stage across various non-RD coding modes.

It provides 5% compression performance gains in speed -6 for rtc
test set, at about 12% speed slow down.

Change-Id: Iefa374aed5a11c4b7ff9a3ed36a98ea8bd184edb

SPEED_FEATURES should contain only configuration parameters.

Change-Id: I7d6d0636879c3e87dad09bc9455c1cf1dc039da8

Change-Id: I32695ad703dcbbbbf5f122b403f3d3120a0be366

Change-Id: I32beb5f18c10b5771146c55933b5555487f53633

Change-Id: I8da5e13b23a3d6b73c82bbe443c82dd87fd689f3

Fix so that vp9_update_segment_aq() will use the correct (i..e, chosen)
encoding mode (from ctx struct) in update_state.

Change-Id: Icc4b66f3935fad5ec4516a4d57e843d12c365e64