[Bug 741868] New: New element to parse Chinese AVS video streams

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=741868
  GStreamer | gst-plugins-bad | git

           Summary: New element to parse Chinese AVS video streams
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: aurelien.zanelli at parrot.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=293191)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=293191)
Chinese AVS video extract

I would like to propose a new element to parse Chinese AVS video stream,
obviously named 'cavsvideoparse' :)

It is built against gst-plugins-bad codecparsers/videoparsers.

Currently, it only knows Jizhun profile, which is the only one supported by
libav decoder iirc.
For parse element, I currently use video/x-gst-av-cavs as media type to be
compatible with the current one of gst-libav. But I propose to define a shorter
media-type like video/x-cavs if you are agree with that.

At this moment, this element is not complete as some features are missing
(timestamping...) and still quite simple but it is usable and enables raw AVS
byte stream to be played. 

For an exemple of use, I attached an extract of AVS video stream which has been
cutted quickly with 'dd' and which can be played with the following pipeline:
gst-launch-1.0 filesrc location=test.avs ! cavsvideoparse !
video/x-gst-av-cavs,stream-format=unit-frame ! avdec_cavs ! autovideosink

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