Exlcude key frame from buffer underrun check, and increase
lowest bitrate in BasicBufferModel.
Both changes are needed because of a known issue (#495).

Change-Id: If5e994f813d7d5ae870c1a72be404c8f7dbbdf27

This change converts push to stmdb and pop to ldmia. In addition word boundaries
are obeyed using \b avoiding substituion where not appropriate.

Patch provided by ihf@chromium.org.

TEST=Used on many Daisy assembly files.
BUG=None.

Change-Id: Ie5b197b158edd0467294551d0b640c8db6530d95

Should be MACROBLOCK, not MACROBLOCKD

Change-Id: I0353bbdf085a181ae2ac1f0b96849b38566e9f6a

So that, in case of error, the arrays are not filled with trash
pointers that are attempted a free() during vp8mt_de_alloc_temp_buffers()

Change-Id: Ic074549c2903a43316510eb42e4f393e7d3ee528

Not used.

Change-Id: I07ba929e3ff82b4b0c86f731769cdf5434c7a816

Change-Id: I28ac1519d1594801fef9a623cb64598d3d751eb0

Change-Id: Ie22841d096f3c86694b95bd06fc3a8ce1f032a10

Change-Id: Ib73c7b2bee4cb2eb2528fa6b381fffe9503079a0

Change-Id: Ie9a26be7c9baa54a0e43a63ed6c77f2746477a9c

Change-Id: I289564a5a27f0d03ddc6f19c7838542ff22719be

Code cleanup

Change-Id: I82f9d787a2f511d39895fd8dfd5347a1676d9dbc

Import changes made on the experimental branch in preparation for
merging the two branches.

Change-Id: I7b5b8fb4fca155cb1d72e7ba13eef18e6a94a298

TEST=Ran it on different asm files.

Change-Id: Ief2a009366787954d0eb5c356c64acaef350cf84

Change-Id: I6edf0626d00ae177c7c04eec64e1ec0dd861dfbe

Adds some basic datarate control tests..

Change-Id: I6eff18aa58ef7cfd14886c6b1e048247cd1ad247

Fix the video source to close if file is open already and add a limit.

Change-Id: I36ada4c609d027b6eaa9b447fe9ad4115532edc1

suppresses encoder progress

Change-Id: Iacc04d98de970f13697c002363ee3a40a03f021b

Change-Id: I4dd192c3297e31b8eadd108ca8d0934e58f502f7

Change-Id: Ibd3e4425a3bf8aae8aa33b70da2b84e1cda8c07f

Rather than unconditionally reading in the next MB's limits, test
the loop exit condition first.

Change-Id: I105d1e92698fb5561aa87160816787604aed03a2

The vp8_post_proc_down_and_across_mb_row_sse2() needs space for an
even number of macroblocks, as they are read two at a time for the
chroma planes. Round up the width during the allocation of
pp_limits_buffer to support this.

Change-Id: Ibfc10c7be290d961ab23ac3dde12a7bb96c12af0

Got 61 test vectors from vp8-test-vectors.git
(http://git.chromium.org/gitweb/?p=webm/vp8-test-vectors.git)

Added decoder test vectors downloading in unit tests. Uploaded
the test vectors and their md5 files to WebM website.
  $ gsutil cp *.* gs://downloads.webmproject.org/test_data/libvpx

Added their sha1sum to the test/test-data.sha1 file.

In unit tests, download the test vectors to LIBVPX_TEST_DATA_PATH.

Test_vector_test goes through the test vectors, decodes them, and
compute the md5 checksums. The checksums are compared with the
expected md5 checksums to tell if the decoder decodes correctly.

Change-Id: Ia1e84f9347ddf1d4a02e056c0fee7d28dccfae15

This prevents the rd cost from wrapping around and going negative.

Change-Id: Id61390537d2ad47762e410918bb4e18f6a0912d4

Clean up the duplicate code as Pascal suggested.

Change-Id: I685fcbb488502e969f6cb73a46db3ea79b90910d

If the threshold(limits) <= 0, skipped filtering and copied the
frame directly. Also, fixed memory allocation checking.

Change-Id: If3d79d5b2bcb71b9777e6eb5cba1384585131e22

Documentation is typically auto-detected by checking for php and
doxygen. Add an option to explicitly disable it.

Remove toggle keywords from libraries, examples, documentation and
unit tests. They were not consistent with the default status.

Change-Id: I21049675ccfd8e58ac612cd058641b197db5c0eb

If a reference frame is forced because of low dissimilarity, then
shut off the search of intra modes. This change has mixed results. On
one clip (QVGA), it hurt quality by ~1.5% with negligible speed impact.
On another (VGA) it had negligible affect on quality, but a ~0.2% speed
impact.

Change-Id: Ic8b07648979d732f489de5f094957e140f84d2eb

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

1. Algorithm modification:
Instead of having same filter threshold for a whole frame, now we
allow the thresholds to be adjusted for each macroblock. In current
implementation, to avoid excessive blur on background as reported
in issue480(http://code.google.com/p/webm/issues/detail?id=480), we
reduce the thresholds for skipped macroblocks.

2. SSE2 optimization:
As started in issue479(http://code.google.com/p/webm/issues/detail?id=479),
the filter calculation was adjusted for better performance. The c
code was also modified accordingly. This made the deblock filter
2x faster, and the decoder was 1.2x faster overall.

Next, the demacroblock filter will be modified similarly.

Change-Id: I05e54c3f580ccd427487d085096b3174f2ab7e86