Change-Id: Id5c889cb87ad33a21d83a415a23e957e8ee3218f

Current setting was specific to 1 layer case.
rc_target_bitrate is total bitrate for whole stream,
so set it to ts_target_bitrate for highest/top temporal layer.

Change-Id: I83de73364956fa21c0a7c971c9f390d4840457e6

Change-Id: I1210ce23cf8f98950c445a17ef51a73c6852c89f

Use unsigned loop counters in set_roi_map() and set_active_map().

Change-Id: I9bbaed38b51ef73b82ba4ad4c4bc18ca5d2399f9

Use unsigned int instead of uint64_t for duration and deadline
arguments to functions get_frame_stats() and encode_frame().

Change-Id: I1f26a7afc38ae89916b2c67415ced26fdc9d53e7

Change-Id: I138d7f62ac7e905642405e60a49ac3d282695e3f

Change-Id: Ib80d4f394692a981e369dc5fecd5432cbec488d1

Change-Id: Ib8ee2b9a4cb785176ca1054489df5dced004837a

Change-Id: I6d81f7d94cb724a9f5a302ca3551196f2d06f9b4

Change-Id: Ibf09b76d5b8c8106b804354d9a7f007a0e3f6173

Change floats to doubles in RateControlMetrics, and make loop
counter signs agree.

Change-Id: I845cf268d9ce837a543d052d8d0f8dfd32bd9817

More size_t/unsigned int disagreement.

Change-Id: I2be01ee680f852f168f6fcac554a534ca3c83e5d

Only use layered average size if number_temporal_layers > 1.

Also removed unneeded commented-out line, and change some parameter
setting in vpx_temporal_scalable_patterns.c

Change-Id: Ic86e43e7daf0313e8c5a4aba1497299158111955

Change-Id: Id6e6b5a96c907261abe4348624241b4568707c1d

Change-Id: I7aa0f9afbd802a1d8686cad9fc6eae4baa6a53c3

Add some rate control metrics.

Change-Id: Ie87c617bbdc31b0324c7c96a042f7bdb8aaa9c7e

Change-Id: I39d78facc79a364cdc529b8cc4930d74f766d413

Change-Id: I137e5e6585356792913e1e84da6c0a439c5153a5

Silences MSVC warning.

Change-Id: I43191cdd8f0231b259ec091be24325ec99d2e962

Change-Id: Ide9c408f4cee7408741ef8c0ffac01645a5a67ca

Change-Id: I69e868295b9798ba1599a411926de0891680032f

This patch adds a buffer-based rate control for temporal layers,
under CBR mode.

Added vpx_temporal_scalable_patters.c encoder for testing temporal
layers, for both vp9 and vp8 (replaces the old vp8_scalable_patterns).

Updated datarate unittest with tests for temporal layer rate-targeting.

Change-Id: I8900a854288b9354d9c697cfeb0243a9fd6790b1

Right now only IVF format is supported which is enough for example code.
Other formats like y4m, webm, raw yuv will be supported later.

Change-Id: I34c6f20731c1851947587ca5c589d7856b675164

Change-Id: I371863fc68f4984a223a684f9e89b25e9991e1e7

the public typedef already includes a const, quiets
'same type qualifier used more than once' warnings

Change-Id: Ib118b3b116fba59d4c6ead84d85b26e5d3ed363d

Change-Id: Idd1acfcf8bb16a2ddb9c6c1c841a7741e90589d9

Change-Id: Ib3747c81db8cc89b5d7012db557411a3b49712aa

Change-Id: I374a0c4bb4a66c0d3dc874c6e57fdee9d1ab72df

New API is supposed to be used from example code. Current implementation
only supports IVF containers (will be extended to Y4M).

Change-Id: Ib7da87237690b1a28297bdf03bc41c6836a84b7e

Change-Id: If0e1cd13aecd1620d26c28bf95e4f84469f78456

This is still work in progress, there are many another planned updates
for all example files.

Change-Id: I2ba5dc6cd19a4bea9fbc6f1ee84cc2bd85925966

Change-Id: Ifee528b1663b10dbe45e0bfef79010370c914e3a

All documentation will be provided as comments in the source files.

Change-Id: Ie609852747733c181191f864204c787a6b23ef3a

To avoid the dependency on the order of header files included.

Change-Id: Ic142638d75fe95e6aba41b11664bfa15f076f793

Various fixups to resolve issues when building vp9-preview under the more stringent
checks placed on the experimental branch.

Change-Id: I21749de83552e1e75c799003f849e6a0f1a35b07

Change-Id: Ic084c475844b24092a433ab88138cf58af3abbe4

Change-Id: I4b911e4173da30c164bde7ea50bc80a70fbbb745

Free used resources before exiting.

Change-Id: If6cde6541615fbf17bf56ed335b76e676eabba93

Using if(); triggers an empty body warning with clang

Change-Id: I0fa2ee676400a974b40f8eaafca9ae668107eebb

This is a code snapshot of experimental work currently ongoing for a
next-generation codec.

The codebase has been cut down considerably from the libvpx baseline.
For example, we are currently only supporting VBR 2-pass rate control
and have removed most of the code relating to coding speed, threading,
error resilience, partitions and various other features.  This is in
part to make the codebase easier to work on and experiment with, but
also because we want to have an open discussion about how the bitstream
will be structured and partitioned and not have that conversation
constrained by past work.

Our basic working pattern has been to initially encapsulate experiments
using configure options linked to #IF CONFIG_XXX statements in the
code. Once experiments have matured and we are reasonably happy that
they give benefit and can be merged without breaking other experiments,
we remove the conditional compile statements and merge them in.

Current changes include:
* Temporal coding experiment for segments (though still only 4 max, it
  will likely be increased).
* Segment feature experiment - to allow various bits of information to
  be coded at the segment level. Features tested so far include mode
  and reference frame information, limiting end of block offset and
  transform size, alongside Q and loop filter parameters, but this set
  is very fluid.
* Support for 8x8 transform - 8x8 dct with 2nd order 2x2 haar is used
  in MBs using 16x16 prediction modes within inter frames.
* Compound prediction (combination of signals from existing predictors
  to create a new predictor).
* 8 tap interpolation filters and 1/8th pel motion vectors.
* Loop filter modifications.
* Various entropy modifications and changes to how entropy contexts and
  updates are handled.
* Extended quantizer range matched to transform precision improvements.

There are also ongoing further experiments that we hope to merge in the
near future: For example, coding of motion and other aspects of the
prediction signal to better support larger image formats, use of larger
block sizes (e.g. 32x32 and up) and lossless non-transform based coding
options (especially for key frames). It is our hope that we will be
able to make regular updates and we will warmly welcome community
contributions.

Please be warned that, at this stage, the codebase is currently slower
than VP8 stable branch as most new code has not been optimized, and
even the 'C' has been deliberately written to be simple and obvious,
not fast.

The following graphs have the initial test results, numbers in the
tables measure the compression improvement in terms of percentage. The
build has  the following optional experiments configured:
--enable-experimental --enable-enhanced_interp --enable-uvintra
--enable-high_precision_mv --enable-sixteenth_subpel_uv

CIF Size clips:
http://getwebm.org/tmp/cif/
HD size clips:
http://getwebm.org/tmp/hd/
(stable_20120309 represents encoding results of WebM master branch
build as of commit#7a159071)

They were encoded using the following encode parameters:
--good --cpu-used=0 -t 0 --lag-in-frames=25 --min-q=0 --max-q=63
--end-usage=0 --auto-alt-ref=1 -p 2 --pass=2 --kf-max-dist=9999
--kf-min-dist=0 --drop-frame=0 --static-thresh=0 --bias-pct=50
--minsection-pct=0 --maxsection-pct=800 --sharpness=0
--arnr-maxframes=7 --arnr-strength=3(for HD,6 for CIF)
--arnr-type=3

Change-Id: I5c62ed09cfff5815a2bb34e7820d6a810c23183c