This commit enables the encoder to skip split partition search if
the bigger block size has all non-zero quantized coefficients in low
frequency area and the total rate cost is below a certain threshold.
It logarithmatically scales the rate threshold according to the
current block size. For speed 3, the compression performance loss:
derf  -0.093%
stdhd -0.066%

Local experiments show 4% - 20% encoding speed-up for speed 3.
blue_sky_1080p, 1500 kbps
51051 b/f, 35.891 dB, 67236 ms ->
50554 b/f, 35.857 dB, 59270 ms (12% speed-up)

old_town_cross_720p, 1500 kbps
14431 b/f, 36.249 dB, 57687 ms ->
14108 b/f, 36.172 dB, 46586 ms (19% speed-up)

pedestrian_area_1080p, 1500 kbps
50812 b/f, 40.124 dB, 100439 ms ->
50755 b/f, 40.118 dB,  96549 ms (4% speed-up)

mobile_calendar_720p, 1000 kbps
10352 b/f, 35.055 dB, 51837 ms ->
10172 b/f, 35.003 dB, 44076 ms (15% speed-up)

Change-Id: I412e34db49060775b3b89ba1738522317c3239c8

Change-Id: I59946642cb5c370726da33f4448a3deaba7d3f11

This commit changes the tables to be read only, which fixes
issue #866

Change-Id: I85bbe03f9d344f50570f8c1c61699bdc5cee248f

Change-Id: I777f49a3c2c2aaa04ae23904396bd7254e1afd8c

Change-Id: I0e262ede7eb4a4ae0c86181922d744e542e93350

Change-Id: I034b73bb27e8023733aae63e6f8565f0a64c7267

Change-Id: I5a566d6ade720f212a60c0ad5d6f1ee1d1d37f2e

Fixes an intermittent assert failure for highbitdepth.

Change-Id: If8cad0209a94f1184b69c7b3f1d587934f857d9b

Adds enums and corresponding vpx level code.

Change-Id: Ia402d47490a4466988d7edc6b7e3e5163f20a381

Change-Id: Id92544762e7b96d3c729dfc8e04ecff91cbcc7f9

Change-Id: Icfc3fb62cc0b05e435814035bfe1f2e2870442b4

Miscellaneous bug-fixes for high bitdepth functionality.
With this patch, high bit-depth profiles become mostly functional,
except for an intermittent assert failure issue that is being
tracked.

Change-Id: I6a7fcbdcf1e5b09842e88535f8442d2e1230748c

- iphonesimulator: IOS_VERSION_MIN was declared in the wrong place.
- armv6: linking via ld instead of CXX is basically required.

Change-Id: Iad187691f633dcf2bc3e3590e88084bb926edb76

This commit removes unused header file vp9_onyxc_int.h and repeatedly
included file vpx_ports/mem.h from vp9_block.h

Change-Id: I400b210bd1da48f1880bd50a8f4a6e2c690e15a1

Block transform skipping was implemented based on DCT's energy
conservation property. Modified the thresholds using zero bin
parameters. AC and DC coefficients were checked separately to
allow better identifying of skippable blocks.

Borg test at speed 3 showed:
stdhd set: psnr gain: 0.153%, ssim gain: 0.051%;
derf set: psnr gain: 0.023%, ssim gain: 0.036%

For most test clips, the encoding speedup is 1% - 2%.
parkrun(720p): 7.5% speedup, park_joy(1080p): 3.5% speedup.

Change-Id: If28eb81113a077414f5ca7b021c14f9069b373bb

The file vpx_integer.h has been included and used in the parent
file vp9_common.h.

Change-Id: I9c65f08353576f9ef1e5ea17244fc5ca964ec002

The commit cleans up the header files in vp9_entropymv.h. This
file should only depend on vp9_mv.h and vp9_prob.h. Remove the
giant vp9_blockd.h from header file list.

Change-Id: I44cd26d2cfd10a16a9325778347dd53f888a874c

BEST is used in very few tests.

Change-Id: I71880534fe5a44721e7bac8be49b5f71766c1e5f

For regular inter frames, if the distance from GOLDEN_FRAME is larger
than 2 and if the predicted motion vector of LAST_FRAME gives lower
sse than that of GOLDEN_FRAME, skip the GOLDE_FRAME mode checking in
the rate-distortion optimization. It provides about 5% speed-up at
expense of -0.137% and -0.230% performance down for speed 3. Local
experiment results:

pedestrian 1080p 2000 kbps
66712 b/f, 40.908 dB, 113688 ms ->
66768 b/f, 40.911 dB, 108752 ms

blue_sky 1080p 2000 kbps
51054 b/f, 35.894 dB, 70406 ms ->
51051 b/f, 35.891 dB, 67236 ms

old_town_cross 720p 1500 kbps
14412 b/f, 36.252 dB, 60690 ms ->
14431 b/f, 36.249 dB, 57346 ms

Change-Id: Idfcafe7f63da7a4896602fc60bd7093f0f0d82ca

Commit message longer than commit edition.

Simulator and devices:
  Add a common minimum iOS version that can be shared by iOS and iOS
  simulator targets.

Fix --enable-debug (for device targets; sim was fine):
  Allow for successful configuration and build with --enable-debug when
  CXX is available by:

  - Using CXX as LD (when CXX is available).
  - Passing the correct form of the iOS minimum version parameter based on
    whether LD is CXX or really is ld.

  Note: ld -g still won't work on macosx with this patch, so if CXX is not
  available, configuration will still fail reporting that the toolchain
  cannot link executables when attempting to pass --enable-debug (because
  ld returns an error code since the one included with xcode doesn't
  support the -g argument).

Change-Id: Ia488aed167cc2ca82ee9e980589fb76dddce634f

Moves transform type defines to vp9_common.h from vp9_idct.h
so that they can be included in vp9_rtcd_defs.pl safely.

Change-Id: Id5106227bee5934f7ce8b06f2eb9fa8a9a2e0ddb

fixes --enable-coefficient-range-checking --enable-debug
vp9_idct.h has references to INT16_MIN/MAX; this header is included in
c++ source so needs to request the macros

Change-Id: I2e643eb973c2d84729fa3cf2f4c4d8bf65cfdff0