See issue 1051. 6 bits is fairly arbitrary but at least allows writing
delta Q values that are fairly normal in other codecs. I can extend to
8 if people want full range, although I personally don't have any need
for that.
Julia Robson [Fri, 2 Oct 2015 09:20:06 +0000 (10:20 +0100)]
SSE2 optimisation for quantize in high bit depth
When configured with high bit detpth enabled, the 8bit quantize
function stopped using optimised code. This made 8bit content
decode slowly. This commit re-enables the SSE2 optimisation
(but not the SSSE3 optimisation).
Marco [Fri, 2 Oct 2015 00:31:40 +0000 (17:31 -0700)]
Fix to denoiser with dynamic resize.
Temporary fix to denoiser when dynamic resizing is on.
-Reallocate denoiser buffers on resized frame.
-Force golden update on resized frame.
-Don't denoise resized frame, and copy source into denoised buffers.
Marco [Thu, 1 Oct 2015 01:27:49 +0000 (18:27 -0700)]
Stabilize the encoder buffer from going too negative.
For screen-content mode, with frame dropper off, put a limit
on how low encoder buffer can go.
Under hard slide changes, the buffer level can go too low and then
take long time to come back up (in particular when frame-dropping
is not used), which will affect the active_worst and target frame size.
jackychen [Thu, 1 Oct 2015 21:03:22 +0000 (14:03 -0700)]
Two-steps scaling in VP9 encoder dynamic resizing.
Dynamic resizing now support two-steps scaling: first go down to
3/4 and then 1/2. This feature is under a flag which controls the
switch between two-steps scaling and one-step scaling (1/2 only).
Ronald S. Bultje [Wed, 30 Sep 2015 22:45:08 +0000 (18:45 -0400)]
vp10: reimplement d45/4x4 to match vp8 instead of vp9.
This is more a proof of concept than anything else. The problem here
isn't so much how to code it, but rather where to place the resulting
code. All intrapred DSP code lives in vpx_dsp, so do we want the vp10
specific intra pred functions to live there, or in vp10/?
Ronald S. Bultje [Wed, 30 Sep 2015 22:44:37 +0000 (18:44 -0400)]
vp8: change build_intra4x4_predictors() to use vpx_dsp.
I've added a few new functions (d45e, d63e, he, ve) to cover the
filtered h/v 4x4 predictors that are vp8-specific, the "correct"
d45 with the correctly filtered bottom-right pixel (as opposed to
the unfiltered version in vp9), and the "broken" d63 with weirdly
filtered bottom-right pixels (which is correctly filtered in vp9).
There may be a minor performance impact on all systems because we
have to do an extra copy of the Above pixel array to incorporate
the topleft pixel in the same array (thus fitting the vpx_dsp API).
In addition, armv6 will have a more serious performance impact b/c
I removed the armv6/vp8-specific assembly. I'm not sure anyone
cares...
Scott LaVarnway [Tue, 29 Sep 2015 12:20:49 +0000 (05:20 -0700)]
VP9: move loopfilter build masks to decode loop
The loopfilter masks are now built in the decode loop.
This is done so we can eventually reduce the number of
MODE_INFO structs required by the decoder.
The encoder builds the masks for the entire frame prior
to calling the loopfilter.
Ronald S. Bultje [Sat, 26 Sep 2015 01:51:55 +0000 (21:51 -0400)]
vp9/10: improve support for render_width/height.
In the decoder, map this to the output variable vpx_image_t.r_w/h.
This is intended as an improved version of VP9D_GET_DISPLAY_SIZE,
which doesn't work with parallel frame decoding. In the encoder,
map this to a codec control func (VP9E_SET_RENDER_SIZE) that takes
a w/h pair argument in a int[2] (identical to VP9D_GET_DISPLAY_SIZE).
Also add render_size to the encoder_param_get_to_decoder unit test.
Ronald S. Bultje [Sat, 26 Sep 2015 01:34:29 +0000 (21:34 -0400)]
Rename display_{size,width,height} to render_*.
The name "display_*" (or "d_*") is used for non-compatible information
(that is, the cropped frame dimensions in pixels, as opposed to the
intended screen rendering surface size). Therefore, continuing to use
display_* would be confusing to end users. Instead, rename the field
to render_*, so that struct vpx_image can include it.
vp10: split UV int4x4 loopfilter flag in one for each covered edge.
In practice, this fixes the issue that if you have an odd number of
mi_cols, on the full right of the image, the UV int4x4 loopfilter
will be skipped over odd cols as well as odd rows (because it holds a
single variable for both edges).
Marco [Tue, 23 Jun 2015 15:34:06 +0000 (08:34 -0700)]
Limit cyclic refresh on steady background blocks.
Use the existing QP condition on limiting cyclic refresh, and add
addiitonal condition that block has been encoded with zero/small motion
x frames in row (where x is at least several times the refresh period).
Additional condition only affect non-screen content mode.
This helps to improve visual stability for noisy input, where on steady
background areas the application of delta_qp may lead to encoding the noise.
Also added a change to use the true skip (after encoding) to update the
last QP.
Tom Finegan [Thu, 24 Sep 2015 21:55:51 +0000 (14:55 -0700)]
build/make/configure.sh: Embed bitcode in arm darwin targets.
When the iOS SDK major version is 9 or higher:
- Pass -fembed-bitcode to compiler, assembler, and linker.
- Add a warning for simulator targets since yasm doesn't know
what -fembed-bitcode means, and exits with an error.
Marco [Tue, 22 Sep 2015 17:42:55 +0000 (10:42 -0700)]
Non-rd mode: Limit transform size for intra to 16x16.
Limit transform size for intra to 16x16, for non-screen content mode.
Little/no change in speed or metrics.
32x32 intra block is rarley selected in RTC (non-screen content) case,
but some visual improvement can be seen in some example,
e.g., captured_video_dark_whd.yuv.
Change size on first frame and change config cause crash.
Reallocation of mi buffer fails if change size on the first frame and
change config in subsequent frames. Add a condition for resolution
check to avoid assertion failure.
projects / libvpx / log