[Bug 793705] msdk: Implement Video Post Processing element

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=793705

--- Comment #24 from sreerenj <bsreerenj at gmail.com> ---
Review of attachment 370068:
 --> (https://bugzilla.gnome.org/review?bug=793705&attachment=370068)

::: sys/msdk/gstmsdkvpp.c
@@ +381,3 @@
+  }
+
+  pool = thiz->sinkpad_buffer_pool;

Is it really neede? one vpp element supposed to accept only one
type(resolution) of frames and why upstream need two pools?
Maybe increase the max-buffers?
This is a sample pipeline which works fine:
DISPLAY=:0 GST_GL_PLATFORM=egl gst-launch-1.0 -q filesrc location=sample.mp4  
! qtdemux ! h264parse ! msdkh264dec ! tee name=t !  queue ! msdkvpp !
video/x-raw, width=640, height=480  ! glimagesink t. ! queue !  videoscale !
video/x-raw, width=320, height=240 ! videoconvert ! xvimagesink

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