Jingning Han [Fri, 3 Oct 2014 00:49:00 +0000 (17:49 -0700)]
Rework partition search skip scheme
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)
Deb Mukherjee [Thu, 2 Oct 2014 22:43:27 +0000 (15:43 -0700)]
Incorporate WRAPLOW macro into non-highbitdepth tx
Incorporates the WRAPLOW macro into the non-highbitdepth transforms
to aid hardware verification between a software C model and an
intended hardware implementation though the use of the configure
options: --enable-experimental --enable-emulate-hardware.
Note that to avoid further discrepancies between the sse/sse2
implementations of the transforms and the C implementation, when the
emulate hardware option is invoked, we also disable sse/sse2/etc.
Deb Mukherjee [Wed, 1 Oct 2014 04:56:33 +0000 (21:56 -0700)]
High-bitdepth bugfixes
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.
Yunqing Wang [Wed, 1 Oct 2014 18:31:34 +0000 (11:31 -0700)]
Modify block transform skipping check
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.
Jingning Han [Wed, 1 Oct 2014 19:36:07 +0000 (12:36 -0700)]
Use precise header files in vp9_entropymv.h
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.
Jingning Han [Mon, 29 Sep 2014 19:42:07 +0000 (12:42 -0700)]
Conditionally skip reference frame check
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
Tom Finegan [Wed, 1 Oct 2014 03:12:56 +0000 (20:12 -0700)]
iOS build configuration updates.
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).
James Zern [Tue, 30 Sep 2014 23:06:23 +0000 (16:06 -0700)]
vpx_integer.h: define __STDC_LIMIT_MACROS
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
tran_low_t/tran_high_t don't belong in a public header, they're private.
Similarly the public headers shouldn't rely on config defines,
vpx_config.h isn't installed.
Jingning Han [Mon, 29 Sep 2014 21:53:05 +0000 (14:53 -0700)]
Fix compiling error in vp9_idct.h
This commit fixes a compiling error in vp9_idct.h, where the codec
checks that the intermediate steps of transformation fit within
16-bit length. The issue was due to broken file dependency.
When calculating delta in VP8 denoiser, since the block size is fixed to 16x16,
the divisor is 256, which is the number of the pixel.
But in VP9, the block size varies, the divisor should correspond to the block
size.
Deb Mukherjee [Wed, 24 Sep 2014 20:25:34 +0000 (13:25 -0700)]
Adds two new subpel search methods
One is a more aggressive version of the pruned subpel tree
search where only a single halfpel candidate is searched.
The search candidate is based on a surface fit result.
The other is a method to obtain the subpel position at one
shot based on the same surface fit.
The methods have not been deployed in any speed setting yet.
Jingning Han [Fri, 26 Sep 2014 19:43:14 +0000 (12:43 -0700)]
Skip certain ALTREF inter modes in ARF coding
This commit enables the encoder to skip checking ALTREF inter modes
in ARF coding, if the predicted motion vectors suggest that the
GOLDEN_FRAME provides higher prediction accuracy than ALTREF_FRAME.
It improves the speed 3 encoding speed by about 5%, at the expense
of compression performance loss -0.041% and -0.225% for derf and
stdhd, respectively.
pedestrian_area 1080p 2000 kbps
66705 b/f, 40.909 dB, 118738 ms ->
66732 b/f, 40.908 dB, 113688 ms
old_town_cross 720p 1500 kbps
14427 b/f, 36.256 dB, 62746 ms ->
14412 b/f, 36.252 dB, 60690 ms
blue_sky 1080p 1500 kbps
51026 b/f, 35.897 dB, 73310 ms ->
50921 b/f, 35.893 dB, 70406 ms
bus CIF 1000 kbps
21301 b/f, 34.841 dB, 7326 ms ->
21248 b/f, 34.837 dB, 7196 ms
Yunqing Wang [Wed, 24 Sep 2014 19:12:25 +0000 (12:12 -0700)]
Skip the partition search for still frames
This patch re-enabled the feature in Pengchong's patch
(commit 12861260732a4fd5f6b667ce9d5105dc9b606eda). Originally, it
was turned on while use_lastframe_partitioning > 0(not used anymore).
Now it was added as a feature, and turned on while speed >= 2.
As described in the original patch, this feature helps speed up the
slideshows in YouTube.
Adapt mode based rd_threshold for similar block size
The rd_thresholds are adaptively changed based on best mode tested.
It was only changed for the same block size, this commit makes the
adaptation for similar block sizes too. The commit also made minor
adjustment and code cleanups.
The impact on encoding time for _ped:
118089 ms -> 111927 ms
The impact on compression:
derf: -0.339%
stdhd: -0.303%
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