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Rather than overloading the parent_ref_frame value to shut off the
search in some cases, add a new validity flag. This cleans up some
of the duplicated mr_encoder_id && mr_low_res_mv_avail checks as
well, for readability.

Change-Id: Iddad93a27066c3d85ff2f25a361ac113b288ab7b

In some situations, believed to be an interaction between temporal
scalability and dropped frames, the references available to an
encoder may not be the same references available to its parent.
Previously, the code tried to force the reference frame chosen by
the parent to be used on this frame, even if it was disabled. This
was preventing the pick mode loop from running even once, which led
to a crash.

Attempts to reproduce this bug locally were unsuccessful, so it is
still undetermined what the underlying cause of this issue is. In
the specific case that was failing, the application did not set
any flags which influenced the reference selection on that frame.
ref_frame_flags indicated that the golden frame was disabled,
believed to be because the last frame updated the last and golden
frames, so golden was shut off by default. It's not clear why this
wouldn't have also been true in the lower res encoder, ie, why the
lower res encoder decided to use and/or was allowed to use the
golden frame. We weren't able to debug into the non-crashing
lower res encoder as the crash couldn't be reproduced locally.

Change-Id: Ifb265253d26963ac2afde0e20cf6792788be6af7

If a parent mb is available but is intra coded, then parent_ref_mv is
invalid. Check that the parent is inter coded before trying to access
the parent_ref_mv. Previously the parent_ref_mv was being read from
an uninitialized stack allocation, causing potential OOB reads and
other undefined behavior.

Change-Id: I0c93cd412a19c3a184bcf6decaa145b3a036a6c0

The stats buffer needs to be reset between runs of the
encoder. I added a Reset() function to TwopassStatsStore
and called it at the beginning of each encode.

This enables us to run multiple encodes which was
previously not possible since there was no way to reset
the stats between runs.

Change-Id: Iebb18dab83ba9331f009f764cc858609738a27f9

Protect the call to {Initialize,Delete}CriticalSection() with an
Interlocked{Inc,Dec}rement() pair, rather than the previous static
initialization. This should play better with AppVerifier, and fix issue

  http://code.google.com/p/webm/issues/detail?id=467

Change-Id: I06eadbfac1b3b4414adb8eac862ef9bd14bbe4ad

The codec as it stood placed a keyframe one frame after a
real cut scene - and ignored datarate and other considerations.

TODO: Its possible that we should detect a keyframe and recode
the frame ( in certain circumstances) to improve quality.

Change-Id: Ia1fd6d90103f4da4d21ca5ab62897d22e0b888a8

Reset the cyclie refresh mode index in alloc_compressor_data().
This is needed to handle both cases of internal and
external spatial resizing.

Change-Id: I2697e12d45135eae2e8f0d45161811f24722312a

On an internal spatial resize, this mode index was not reset to 0,
and therefore could exceed dimensions of seg_map or cyclic_refresh_map.

Change-Id: I6fe85dbd2765eb0207a9d9f71fda8d8b8c34f075

Patch Set 1: gain familiarity with unit tests... added simple
4x4 subtract test
Patch Set 2: fixed mistakes, parameterized as suggested
Patch Set 3: randomized the source/predictor data


Change-Id: I33432bdf7c9f2a9b8c2533a37106382c2a8209ee
Signed-off-by: Scott LaVarnway <slavarnway@google.com>

Change-Id: I67bf154e35fa02b407a9b2c312a536d6bb2aaaf2

Add configure detection of the new x32 ABI as well as support in asm.

Change-Id: Ic66a069599adeb81062090e3f11b71ee1fb97cb8

in order to make it easier to implement the frame-base multithreading.

Change-Id: Iea2fd05be34fa704848fdc7669bf167f2ed229c5

Fixes some build issues for people building for win32 who have a
pthreads emulation layer installed.

Change-Id: I0e0003fa01f65020f6ced35d961dcb1130db37a8

This should avoid problems with blocks gettings high quality
improvement despite having recently moved:

Change-Id: Ic0af0de2d6577807fa3c553f47b55d547ef36359

Set the seg map to 0 for key frame.

In previous commit on cyclic refresh, the seg map for key frame
was not reset, and instead used the seg map from last frame.

Change-Id: I848eb2face420dfcd2f7daca6f070b9127ca938b

-Increase the amount of mbs to be refreshed.
-Replace the delta qp with a fixed and reduced delta.
-Change to the mb update loop to try to always update same amount of mbs.

Change-Id: I93ac88002fd8dc677d2337f77998ff93f64e4ff9

Used mbc instead.

Change-Id: If22136b4fee89b68ca2246265f3c27853701136c

This change is necessary for the frame-based multithreading
implementation.
Since the postproc occurs in this call, vpxdec was modified to time around
vpx_codec_get_frame()

Change-Id: I389acf78b6003cd35e41becc16c893f7d3028523

Change-Id: I11aa90be41dd585c9784301f47a9d580fac09260

Change-Id: I43ea65bf0a35ddb33a096a392e10b1869ea73f9a

from vp8_decode_frame() to mb_mode_mv_init()

Change-Id: I267fd764a4c826d62e6799dceb1b8fb5f97fde6d

Not used.

Change-Id: Ifbd97c9ad537d5184f7e305fa8acf6f027978b6b

Initialize the top line at the beginning of each frame and
the left column at the beginning of each row.

Change-Id: I5412f7ea49ffc490215cf65a62715a6c5e3a5a29

Multiple decoders were getting allocated per frame.
If the decoder crashed we exitted with out freeing
them and the next time in we'd allocate over.

This fix removes the allocation and just has 8
boolcoders in the pbi structure

Change-Id: I638b5bda23b622b43b7992aec21dd7cf6f6278da

Updated/added a few cases of temporal patterns,
and some changes to the encoder settings.

Change-Id: Idaa75cfc4a26e5b6321f273ef9450b5c85368a4d

Bug introduced in I02d034c70cd97b65025d59dd67c695e1db529f0b


Change-Id: Ifb74ab659f3b3cf5f5b95046bacffb202d5b4d64