Yunqing Wang [Thu, 2 Oct 2014 23:25:52 +0000 (16:25 -0700)]
Allow mode search breakout at very low prediction errors
In model_rd_for_sb function, the spatial domain SSE and variance
are checked to see if transform coefficients are quantized to 0.
Besides that, this patch adds another set of thresholds that are
much more strict. These thresholds are used to conduct a partition
block level check to measure if all its TX blocks are skippable
for YUV planes. If it is true, x->skip is set for this partition
block, and thus its mode search is terminated.
This speeds up the encoding at very low prediction error case,
such as screen sharing application. This patch covers what
rd_encode_breakout_test() does, so that function is removed.
Borg test at speed 3 shows:
For stdhd set, psnr: +0.008%, ssim: +0.014%;
For derf set, psnr: +0.018%, ssim: +0.025%.
No noticeable speed change.
Jim Bankoski [Tue, 7 Oct 2014 23:36:14 +0000 (16:36 -0700)]
experimental : partition using 1/8 x 1/8 image
The concept:
There's too much noise in source pixels for variance and at low bitrate
the reconstructed looks nothing like the source so we have problems
getting good partitionings with either. This skirts the issue by using
a box blur scaled down version for variance calculations. To compare
against source_var_ moved keyframe to be rd based like source_var.
Jingning Han [Tue, 7 Oct 2014 19:30:33 +0000 (12:30 -0700)]
Take out repeated block width/height lookup functions
The functions b_width_log2 and b_height_log2 only do direct
table fetch. This commit unifies such use cases by using the
table directly and removes these functions.
Yaowu Xu [Tue, 7 Oct 2014 18:22:09 +0000 (11:22 -0700)]
Add range checking for decoded coefficients.
The coefficient range checking is enabled when configured with
--enable-debug --enable-coefficient-range-checking
for vpxdec to detect ill-formed input stream. This addresses the
problem raised by issue #792.
Jingning Han [Mon, 6 Oct 2014 22:53:27 +0000 (15:53 -0700)]
Fix eobs buffer pointer mis-use
This commit fixes a buffer pointer mis-use in store_coding_context.
The compression performance for stdhd set of speed 3 is improved by
0.097%. It fixes issue 869.
Paul Wilkins [Fri, 26 Sep 2014 16:20:01 +0000 (17:20 +0100)]
Improve two pass VBR accuracy.
Adjustments to the GF interval choice and minimum boost.
Adjustment to the calculation of 2 pass worst q.
Compared to 09/29 head there is metrics hit on derf of
(-0.123%,-0.191%)
Compared to the September 29 head and a baseline on
September 18 baseline the accuracy of the VBR rate control
measured on the derf set is as follows:-
Mean error % / Mean abs(error %)
Sept 18 baseline (-7.0% / 14.76%)
Sept 29 head (-15.7%, 19.8%)
This check in (-1.5% / 14.4%)
The mean undershoot is reduced slightly but the
worst case overshoot on e.g. harbour/highway is
increased. This will be addressed in a later patch.
Jingning Han [Sun, 5 Oct 2014 19:05:14 +0000 (12:05 -0700)]
Fix an IOC issue in vp9_rd_pick_inter_mode_sb
It is possible that the GOLDEN reference frame is not avaiable, in
which setting the predicted mv will be associated with a residual
value of INT_MAX. This commit checks this condition before
left shift and comparison with that of ALTREF frame, to avoid
overflow issue.
Yaowu Xu [Fri, 3 Oct 2014 21:41:12 +0000 (14:41 -0700)]
Properly initialize segmentID in nonrd coding path
This commit adds proper initialization of segment id for variance AQ
mode in non-rd coding path. It fixes the enc/dec mismatch issue of
rt=7 with --aq-mode=1, as reported in issue #816
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.
projects / libvpx / log