Adjusts some of the qualification thresholds in mfqe to eliminate
artifacts due to wrong decisions. Besides, a new qualification
criteria is used to disable mfqe if the quality of the previous
frame is itself not too good.

Change-Id: I4097c20b7fd4fcc60cc3003c1e33e8faae2ff066

The denoiser function was modified to reduce the computational
complexity.

1. The denoiser c function modification:
The original implementation calculated pixel's filter_coefficient
based on the pixel value difference between current raw frame and last
denoised raw frame, and stored them in lookup tables. For each pixel c,
find its coefficient using
    filter_coefficient[c] = LUT[abs_diff[c]];
and then apply filtering operation for the pixel.

The denoising filter costed about 12% of encoding time when it was
turned on, and half of the time was spent on finding coefficients in
lookup tables. In order to simplify the process, a short cut was taken.
The pixel adjustments vs. pixel diff value were calculated ahead of time.
    adjustment = filtered_value - current_raw
               = (filter_coefficient * diff + 128) >> 8

The adjustment vs. diff curve becomes flat very quick when diff increases.
This allowed us to use only several levels to get a close approximation
of the curve. Following the denoiser algorithm, the adjustments are
further modified according to how big the motion magnitude is.

2. The sse2 function was rewritten.

This change made denoiser filter function 3x faster, and improved the
encoder performance by 7% ~ 10% with the denoiser on.

Change-Id: I93a4308963b8e80c7307f96ffa8b8c667425bf50

Replace DECLARE_ALIGNED_ with vpx_memalign()

DECLARE_ALIGNED (__declspec(align())) does not work as intended when
used on class data members:

Data in classes or structures is aligned within the class or structure
at the minimum of its natural alignment and the current packing setting
(from #pragma pack or the /Zp compiler option)

Change-Id: I304aaa6c3716fbfae24675ecf192f4b40787e83e

Change-Id: I621a2bbd5f07691fa76dac36b65f406ad4fed792

For videos with big static background(such as video conferencing
clips), the mode decision was biased to ZEROMV in order to
obtain a stable background. The percentage of ZEROMV on last
frame was used to predict if there is static area in current frame,
and checking already-encoded neighboring macroblocks' motion
vectors to make sure the local area has low motion.

Change-Id: I05b3241d3a56a0bda88b6681e5646c1c8baf2e57

Change-Id: Id1d0deb6a2c556a0213d916c2638ef6285c2eb00

Required for frame-based multithreading

Change-Id: I361ec468b5bda7836116c5f0bf3a83f60c214a73

Users of libvpx should not use libm transitively, so mark it as private.

Change-Id: Ic940aefe737a6f9a780ea742ea5c6be40c30a73e

pass a variable to make_tuple() rather than a function, fixes type
errors

Change-Id: Ic0cbd25d0ca35ad08c672040b4141b3b81695752

pass a variable to make_tuple() rather than a function, fixes type
errors

Change-Id: I5e04b61b5ab58cc0090ef21119486ca04853af61

The current way of counting inter_zz_count doesn't work correctly
in multi-threaded encoding. Calculating it after the frame is
encoded fixed the problem.

Change-Id: Ifcb1972cde950b8cc194f75c6d7b6af09e8b0e65

Loop filter producing wierd artifacts when
repeatedly applied in noisy video.   This
mitigates the effect.

Change-Id: If4b1a8543912d186a486f84e11d8b01f7436fa5f

This code allows us to skip encoding if the sse
is less than the error we could possibly encode.

Change-Id: Iefb590dc0ee30b660495218398c7969f7d5fd19f

Change-Id: Iaa947e640f27e6f6eaf7d845f243536bca2df513

visual studio targets do not depend on executables, only the projects
produced.
tested with --target=x86-win32-vs9
fixes:
...
make[1]: *** No rule to make target `test_libvpx', needed by `.bins'.
Stop.
Makefile:17: recipe for target `.DEFAULT' failed

Change-Id: I606ab32d5e26fee352f25c822e0f496eff165382

The current parsing logic of the dumpmachine tuple lacks any arm
cases which means tgt_isa never gets set, so for all arm targets,
we get detected as generic-gnu.  Add some basic arm checks here
so the automatic detection logic works.

Change-Id: Ie5e98142876025c6708604236bc519c0bdb09319

Added checks for pthread_create() errors.

Change-Id: Ie198ef5c14314fe252d2e02f7fe5bfacc7e16377

If you build with --enabled-shared on a Linux arch not explicitly
listed, the configure script will abort because it didn't detect
"linux" in the fallback generic-gnu tuple.

Since this is the fallback tuple and people are passing
--enable-shared, assume the user knows what they're in for.

Change-Id: Ia35b657e7247c8855e3a94fca424c9884d4241e3

Change-Id: I737361fa9911c11017af971a80c2ffad20b01d03

Change-Id: Ic4be3145e8a90d66aa4499416094bd08a9e09af4

using large values for the timebase, e.g., {33333, 1000000} could
rollover the timestamp calculation in vp8e_encode as it was not using
64-bit math.

originally reported on ffmpeg's trac:
  https://ffmpeg.org/trac/ffmpeg/ticket/1014

BUG=468

Change-Id: Iedb4e11de086a3dda75097bfaf08f2488e2088d8

Change-Id: I813fa94c83df6282f382b24bbaccb1fe2fa94276