[Libva] Quality of the scaled H264 decoded image
Ratin
ratin3 at gmail.com
Fri Feb 22 07:17:09 PST 2013
On Thu, Feb 21, 2013 at 5:26 PM, ykzhao <yakui.zhao at intel.com> wrote:
> On Thu, 2013-02-21 at 06:30 -0700, Ratin wrote:
> > awesome, would like to see the result from HQ scaling sometime in the
> > future. I am just using putSurface, don't want to go thru Proc
> > pipeline if I don't have to. Is the performance penalty identical in
> > both ways? Is there a way I can measure how much GPU processing (%
> > and such) is being utilized?
>
> They are implemented in different ways and it is difficult to check the
> performance penalty. The putsurface is based on the 3D model while the
> proc pipeline is based on GPGPU model. (Intel_gpu_top may help to show
> the GPU utility, which can be downloaded from the
> http://cgit.freedesktop.org/xorg/app/intel-gpu-tools/).
>
> Will you please check whether it can meet with your requirement if you
> can use the proc VPP to do the upscaling conversion and then call the
> vaPutsurface to display it?
>
> Thanks.
> Yakui
>
Hi Yakui, Thanks for your reply. I just started looking into this , the
total number of filters available for me seems to be only two, not sure if
thats normal or not. I am using HD4000 My lspci output shows the following:
d02788e046eb:/usr/local/bin# lspci
00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM
Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset
Family USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series
Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset
Family USB Enhanced Host Controller #2 (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family
PCI Express Root Port 1 (rev c4)
00:1c.3 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family
PCI Express Root Port 4 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset
Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM76 Express Chipset LPC Controller
(rev 04)
00:1f.2 IDE interface: Intel Corporation 7 Series Chipset Family 4-port
SATA Controller [IDE mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus
Controller (rev 04)
00:1f.5 IDE interface: Intel Corporation 7 Series Chipset Family 2-port
SATA Controller [IDE mode] (rev 04)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B
PCI Express Gigabit Ethernet controller (rev 07)
02:00.0 Network controller: Intel Corporation Centrino Wireless-N 2200 (rev
c4)
I will use more query code to know what are those two filters and will post
the results here..
Thanks
Ratin
On Tue, Feb 19, 2013 at 7:24 PM, Xiang, Haihao
> <haihao.xiang at intel.com> wrote:
>
>
> > I am using Intel_driver from the staging branch, on a Gen 3
> HD4000. So
> > there other algorithms like bi-cubic is not supported?
>
>
> You can select another scaling method other than the default
> method via
> the flag to vaPutSurface() or the filter_flag in
> VAProcPipelineParameterBuffer.
>
> /* Scaling flags for vaPutSurface() */
> #define VA_FILTER_SCALING_DEFAULT 0x00000000
> #define VA_FILTER_SCALING_FAST 0x00000100
> #define VA_FILTER_SCALING_HQ 0x00000200
> #define VA_FILTER_SCALING_NL_ANAMORPHIC 0x00000300
> #define VA_FILTER_SCALING_MASK 0x00000f00
>
> In VAProcPipelineParameterBuffer:
>
> * - Scaling: \c VA_FILTER_SCALING_DEFAULT, \c
> VA_FILTER_SCALING_FAST,
> * \c VA_FILTER_SCALING_HQ, \c
> VA_FILTER_SCALING_NL_ANAMORPHIC.
> */
> unsigned int filter_flags;
>
> For Inter driver, Currently only
> VA_FILTER_SCALING_NL_ANAMORPHIC and
> VA_FILTER_SCALING_DEFAULT/VA_FILTER_SCALING_FAST are
> supported. We
> will add the support for VA_FILTER_SCALING_HQ.
>
> Thanks
> Haihao
>
> >
> >
> >
> > On Mon, Feb 18, 2013 at 12:11 AM, Xiang, Haihao
> > <haihao.xiang at intel.com> wrote:
> > On Fri, 2013-02-15 at 16:18 -0800, Ratin wrote:
> > > I am decoding a 720 P video stream from a camera
> to 1080 P
> > surfaces
> > > and displaying them on the screen. I am seeing
> noticable
> > noise and
> > > pulsating which is directly related to the I frame
> interval
> > > (aparently), the lowest I-frame interval I can
> specify for
> > the camera
> > > is 1 second and selecting that in addition to
> bitrate of
> > 8192 kbps
> > > makes is slightly better but still a lot of noise.
> A
> > software
> > > decoded/scaled video looks all smooth.
> > >
> > >
> > > What I am wondering is what's the default scaling
> algorithm
> > being used
> > > in vaapi/intel driver and how do I specify better
> scaling
> > algorithms
> > > like bi-cubic etc.and possibly specify the
> strength of
> > deblocking
> > > filter level as well, and what can I do to reduce
> the
> > pulsating ?
> >
> >
> > Which driver are you using ? For Intel, it is
> bilinear.
> >
> > >
> > >
> > >
> > >
> > > Any input would be much appreciated.
> > >
> > >
> > > Thanks
> > >
> > >
> > > Ratin
> > >
> > >
> >
> > > _______________________________________________
> > > Libva mailing list
> > > Libva at lists.freedesktop.org
> > >
> http://lists.freedesktop.org/mailman/listinfo/libva
> >
> >
> >
> >
>
>
>
>
>
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