Instead of using source variance, this patch uses variance of the
frame difference between the source and the current frame to make
fixed size partition decisions. Also disables adjusting partitioning
if variance based or fixed size partitioning is used.

The latter change improves the speed substantially for speed 6, so
that speed 7 is now less than 3x the speed of speed 6. But speed
6 is 48% better in psnr on the rtc set compared to speed 7.

As compared to speed 5,
speed 6 is -37% in psnr at about 2.5x the speed,
speed 7 is -55% in psnr at about 7x the speed.

Change-Id: If61d80431d3e04ed304ac05832e773cdb2c0a578

Adds a method for determining a fixed size partition based on
variance of a 64x64 SB. This method is added to rtc speed 6.
Also fixes a bug in rtc_use_partition() and includes some
refactoring related to partitioning search, and some cosmetics.

Currently compared to speed 5, the coding efficiency of speed 6
is -19% and that of speed 7 is -55%, in cbr mode.

Change-Id: I057e04125a8b765906bb7d4bf7a36d1e575de7c6

* changes:
  normalize int64_t high value to INT64_MAX
  resolve issue with arm code failing unit test

Change-Id: I7e96d6199f882d35357f6a9a08c04ad0af5dc26e

The optimizer did something funny with the code around
line 1412.  Before the call to encode_sb split_dist was
set properly but after it was adjusted and converted to
a negative.

https://code.google.com/p/webm/issues/detail?id=714

Change-Id: I9a7631d5325ade2dc28c1030653a23eecec8721b

Change dx_time data type to int64_t to prevent
test time overflow when decoding long video.

Change-Id: I3dd5e324a246843e07e635fd25c50e71e385ed70
Signed-off-by: James Yu <james.yu@linaro.org>

Change-Id: I56fcb82c4334c7591b765b55b3c2912778af6db5

If sf->disable_split_mask is DISABLE_ALL_SPLIT, disable
sf->adaptive_pred_interp_filter to avoid unnecessary operations.

Change-Id: Icb59174b2f4e9a3c3c16a696deb8018e5bd999eb

Moves the existing speed 6 to speed 7 and adds an
intermediate level 6 which is roughly in between
speeds 6 and 7 in both speed and coding efficiency.
Also includes some minor fixes/adjustments.

Change-Id: I98befc4d82d750e79fe426c457c4a2571f6b6cc7

If show_existing_frame indicates that the decoder should
display an existing (previously decoded) frame, add a
check to make sure that the signaled buffer does contain
a valid decoded frame.

Change-Id: Iac8c686b321827414d69a3f2d0467566911bcba2

for ABSDATA mode, so segment loop filter level always fall in valid
range for both Absolute and delta modes.

Change-Id: If90df3411479533dbdab63f8ae088d2f5dd174a9

broken since:
1d3ca088 obj_int_extract.bat: Pass obj_int_extract.exe path to obj_int_extract.bat.

Change-Id: Ic3de9f8c2b604e3aa9b905e1bc0b578963e01a4a

The qindex for a segment was not clamped in ABSDATA mode, which may
cause invalid memory access if an ill-formed stream has a negative
value in ABSDATA mode. This commit added clamp to make sure qindex
for a segment always fall into valid range.

Change-Id: I0a74d00f4ef40aec7edaeca1d03c8645e23ab08c

Change-Id: I5b3918441f63ceb7889dcf546e9a2d781be4a3cb

not just CONFIG_VP8_ENCODER; there's now VP9 code in the same file

Change-Id: I73d8b9141af1374b37480fb0495e17a7952eb4f9

Skip coefficient cost update in non-RD mode decision setting. Allow
periodical mode and motion vector cost update. Currently every other
8 frames. The increment runtime is a constant number. Hence more
visible for CIF resolution, while negligible for 1080p.

Speed -6 compression performance for rtc set is improved by 4.5%.

Change-Id: I27e0ad7c521fcc2af1d825582cbdd1a27ac4c323

- update example paths
- add a few missing generated rtcd, dox files
+ sort

Change-Id: I7f4fbf53972d247e96f9c741ff039d244ceb6b2e

Change-Id: Id5c889cb87ad33a21d83a415a23e957e8ee3218f

Change-Id: Idf58109195a88dec66c5e1ea6a51c61e6c659ff1