saving and restoring of D registers.

Change-Id: Id3630c90fcb160ef939fef55411342608af5f990

Change-Id: I3814984a624bc64147c57efa74fbdda8eda47262

When the frame size changes the last frame segment map must
be resized to match and initialized to 0.

Change-Id: Idc10de109f55dbe9af3a6caae355a2974712243d

This commit makes the rate-distortion optimization search of chroma
components consistent across all block sizes. It removes redundant
codes.

Change-Id: I7e76f54d045e8efdd41d84a164c71f55b484471b

Updated function signatures:
  txfrm_block_to_raster_block
  txfrm_block_to_raster_xy
  extend_for_intra
  vp9_optimize_b

Change-Id: I7213f4c4b1b9ec802f90621d5ba61d5e4dac5e0a

Change-Id: I4fad357465022d14bfc7e13b348c6da267587314

VP9_COMMON is the right place to segmentatation struct because it has
global segmentation parameters, not something specific to macroblock
processing.

Change-Id: Ib9ada0c06c253996eb3b5f6cccf6a323fbbba708

Change-Id: I17c7d7eaa60fe69c543403c340f7c1078bfd339f

Adds a speed feature to disable split partition search based on a
given threshold on the source variance. A tighter threshold derived
from the threshold provided is used to also disable horizontal and
vertical partitions.

Results on derfraw300:
threshold = 16, psnr = -0.057%, speedup ~1% (football)
threshold = 32, psnr = -0.150%, speedup ~4-5% (football)
threshold = 64, psnr = -0.570%, speedup ~10-12% (football)

Results on stdhdraw250:
threshold = 32, psnr = -0.18%, speedup is somewhat more than derf
because of a larger number of smoother blocks at higher resolution.

Based on these results, a threshold of 32 is chosen for speed 1,
and a threshold of 64 is chosen for speeds 2 and above.

Change-Id: If08912fb6c67fd4242d12a0d094783a99f52f6c6

This commit unifies the rate-distortion cost calculation process of
luma and chroma components. It allows early termination to be enabled
later in the rd search loop of chroma components, in consistent with
luma pixels.

Change-Id: I2e52a7c6496176bf2a5e3ef338d34ceb8aad9b3d

Change-Id: If3cd84bb873fbad5622172c9b79ad8ae5485235a

avoids a crash caused by issue #585

Change-Id: I301595ee0227699b0da6f0dad6d870dd546e94ef

write_ivf_file_header would incorrectly skip writing the file header in
the 2nd pass, causing the initial frame header to be overwritten on
close potential causing an overly large frame header to be read and a
crash.

most likely broken since:
9e50ed7f vpxenc: initial implementation of multistream support

fixes issue #585

Change-Id: I7e863e295dd6344c33b3e9c07f9f0394ec496e7b

Change-Id: I27134b9a5cace2bdad53534562c91d829b48838d

Making foreach_transformed_block_in_plane more clear (it's not finished
yet). Using explicit tx_size variable consistently instead of
(ss_txfrm_size / 2) or (ss_txfrm_size >> 1) expression.

Change-Id: I1b9bba2c0a9f817fca72c88324bbe6004766fb7d

Adding const to above and left pointers. Cleanup.

Change-Id: I51e195fa2e2923048043fe68b4e38a47ee82cda1

Change-Id: I33cff9ac4f2234558f6f87729f9b2e88a33fbf58

Change-Id: I15adbbda15d1842e9f15f21878a5ffbb75c3c0c9

The macro block mode info context originally contained an
entry for each 16x16 macroblock. In VP9 each entry refers
to an 8x8 region not a macro block, so the naming is misleading.

This first stage clean up changes the names of 3 entries in the
structure to remove the mb_ prefix.

TODO clean up the nomenclature more widely in respect of
mbmi and bmi.

Change-Id: Ia7305c6d0cb805dfe8cdc98dad21338f502e49c6

The conversion was done with the help of the checkbashisms script
and https://wiki.ubuntu.com/DashAsBinSh .

Change-Id: Id64ecefb35c8d72302f343cd2ec442e7ef989d47

Don't do vertical or horizontal splits if subsize < min_partition_size,
except for edge blocks where it makes sense.

Change-Id: I479aa66ba1838d227b5de8312d46be184a8d6401

Refactor choose_largest_txfm_size_ and make it find the largest
transform size via lookup table.

Change-Id: I685e0396d71111b599d5367ab1b9c934bd5490c8