No need to reinitialize for base Q changes.

Change-Id: Ie76ec21dd3c5582d5183dbed75ed73a1eed3e291

Eliminate unnecessary checks on target endianness and associated
macros.

Change-Id: I1d4e6a9dcee9bfc8940c8196838d31ed31b0e4aa

Change-Id: I4a328ce152d9dbe6b0d1606d1b523e8e7bfb468e

Currently, when the video frame width is not multiples of 16, the
source buffer has a stride of non-multiples of 16, which forces
an unaligned load in SAD function and hurts the performance. To
avoid that, this change allocates source buffers to be multiples
of 16.

Change-Id: Ib7506e3eb2cea06657d56be5a899f38dfe3eeb39

vpx_free if used contains this check. If replaced, well behaved free
will behave similarly.

Change-Id: I25483aaa8b39255b9a8cf388d6e5eaa20a908ae1

Eliminated unnecessary calculations. Very small change
to performance.

Change-Id: Ib7213d43c64e36955177c4d47950ff472266f822

In real-time mode, vp8_sad16x16 function is called heavily in
motion search part. Improvement of this function gives 1.2%
encoding performance gain (real-time mode, tulip clip).

Change-Id: I23c401fc40c061f732a9767e8d383737a179bd58

checks added to make sure that cpi->tplist
is freed correctly in vp8_dealloc_compressor_data
and vp8_alloc_compressor_data.

Change-Id: I66149dbbd25c958800ad94f4379d723191d9680d

Eliminated unnecessary calculations.  Improved performance
by 10% on keyframes and 1.6% overall for the test clip used.

Change-Id: I87671b26af5e2cc439e81d0fee3b15c7cd2a3309

hasn't been kept up to date. remove it to avoid confusion.

Change-Id: I52ffde19b59fec5c7a381299ca2e85cb38330be7

As mentioned in check-in "Improve motion search in real-time mode",
MV prediction calculation causes speed loss for speed 7 and above.
This change added a flag to turn off this calculation for speed>6
in real-time mode.

Change-Id: I9f4ae5a8bf449222d1784b54e7d315fc8347b2d1

Adds a new ARMv6 optimized function vp8_sad16x16_armv6 to encoder.

Change-Id: Ibbd7edb8b25cb7a5b522d391b1e9a690fe150e57

Allow compiling without adding vp8/{common,encoder,decoder} to the
include paths.

Change-Id: Ifeb5dac351cdfadcd659736f5158b315a0030b6c

Applied better MV prediction in real-time mode, which improves
the encoding quality.

Used quarter-pixel search instead of iterative sub-pixel search
for speed >=5 to improve encoding performance.

Tests on the test set showed:
1. For speed=-5, quality improvement: 1.7% on AvgPSNR and 2.1%
on SSIM, performance improvement: 3.6% (This counts in the
performance lose caused by MV prediction calculation in "Improve
MV prediction in vp8_pick_inter_mode() for speed>3").
2. For speed=-8, quality improvement: 2.1% on AvgPSNR and 2.5%
on SSIM. but, 6.9% performance decrease because of MV prediction
calculation. This should be improved later.

Change-Id: I349a96c452bd691081d8c8e3e54419e7f477bebd

Created a new speed 1 which is in the middle of the old
speed 0 and speed 1. (for both quality and performance)

Change-Id: I4802133cdb43f359ca787646c090899679dd5d84

stride would not be calculated correctly for material
with odd sized frame widths.

Change-Id: I1710f6aef9ebb93d36249c9239c68c5baa9791f8

Use 0xFFF0 vice 240 (0xF0) for determining whether the sometimes
implicit bit 3 will be transmitted. This is consistent with the decoder
and encode_mvcomponent().

Change-Id: Ic1304d0ab56844bed8236edd1c5243a6767fc6b1

Change-Id: Icf4b692099d7d249fe3553852b1022b027b28e4b

Adds vp8_sub_pixel_variance16x16_armv6 function to encoder. Integrates
ARMv6 optimized bilinear interpolations from vp8/common/arm/armv6
and adds new assembly file for variance16x16 calculation.
 - vp8_filter_block2d_bil_first_pass_armv6   (integrated)
 - vp8_filter_block2d_bil_second_pass_armv6  (integrated)
 - vp8_variance16x16_armv6 (new)
 - bilinearfilter_arm.h (new)
Change-Id: I18a8331ce7d031ceedd6cd415ecacb0c8f3392db

make reference version of bilinear_filters short.
use reference versions of bilinear_filters and sub_pel_filters when
possible.

recognize that Width was being passed into
filter_block2d_bil_first_pass multiple times. ARM version had already
fixed this. propegate to C.

change references to src_pixels_per_line to src_pitch and standardize on
src/dst (instead of input/output).

recognize that first_pass is only run in the verticle and second_pass
only horizontal. ARM version had already fixed this. propegate to C

Change-Id: I292d376d239a9a7ca37ec2bf03cc0720606983e2

Improved performance of good quality, speed 0 (3% average)
with no average quality loss.

Change-Id: Ica34473f99bd74260eaebde6b132185e09e3c09d

it's difficult to mux the *_offsets.c files because of header conflicts.
make three instead, name them consistently and partititon the contents
to allow building them as required.

Change-Id: I8f9768c09279f934f44b6c5b0ec363f7943bb796