[Libva] Does vaapidecode or vaapipostproc support sending raw YUV data to sink elements in a gst pipeline?

[Glenn Racette]

Can the vaapidecode, vaapipostproc gst elements be used to send raw YUV data to a typical gst sink element, such as xvimagesink or better yet, v4l2sink?

We have written a v4l2sink driver that accepts raw YUV data from a 4K video file, but without the hardware acceleration support, the overall throughput of the pipeline is *very* poor.  We installed the vaapi components and Intel driver and the improvement in performance is amazing, but we have only been able to get the standard "vaapi" pipelines working.  Can we route the raw, decoded YUV data to a different sink?

Working:
gst-launch-1.0 filesrc location=demo.mp4 ! vaapidecode ! vaapisink

Not working:
gst-launch-1.0 filesrc location=demo.mp4 ! qtdemux ! vaapidecode ! xvimagesink
gst-launch-1.0 filesrc location=demo.mp4 ! qtdemux ! vaapidecode ! v4l2sink device=/dev/video0
gst-launch-1.0 filesrc location=demo.mp4 ! qtdemux ! vaapidecode ! vaapipostproc ! xvimagesink
gst-launch-1.0 filesrc location=demo.mp4 ! qtdemux ! vaapidecode ! vaapipostproc ! v4l2sink device=/dev/video0
gst-launch-1.0 filesrc location=demo.mp4 ! qtdemux ! vaapidecode ! vaapipostproc ! 'video/x-raw, format=NV12, width=1920, height=1080' ! xvimagesink

Found this bug but not familiar with vaapi enough to know if this is really related or if the proposed fix would be supported in a gst-launch pipeline.
https://bugzilla.gnome.org/show_bug.cgi?id=720174

Any help is greatly appreciated.

Glenn
================================================
Ubuntu 13.11.0
Intel Ivybridge, Core i7-3517UE @ 1.70GHz
Mobile Intel QM77 Express chipset
GPU HD 4000

grace at 4ksrv:~$ vainfo
libva info: VA-API version 0.33.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/i386-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_33
libva info: va_openDriver() returns 0
vainfo: VA-API version: 0.33 (libva 1.1.1)
vainfo: Driver version: Intel i965 driver - 1.0.20
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            :  VAEntrypointVLD
      VAProfileMPEG2Main              :  VAEntrypointVLD
      VAProfileH264Baseline           :  VAEntrypointVLD
      VAProfileH264Baseline           :  VAEntrypointEncSlice
      VAProfileH264Main               :  VAEntrypointVLD
      VAProfileH264Main               :  VAEntrypointEncSlice
      VAProfileH264High               :  VAEntrypointVLD
      VAProfileH264High               :  VAEntrypointEncSlice
      VAProfileVC1Simple              :  VAEntrypointVLD
      VAProfileVC1Main                :  VAEntrypointVLD
      VAProfileVC1Advanced            :  VAEntrypointVLD
      VAProfileJPEGBaseline           :  VAEntrypointVLD

Glenn Racette
RightHand Technologies
www.righthandtech.com<http://www.righthandtech.com/>


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/libva/attachments/20140311/70b376c5/attachment.html>