[Bug 667724] New: decklinksrc: add timeout property

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=667724
  GStreamer | gst-plugins-bad | 0.10.22

           Summary: decklinksrc: add timeout property
    Classification: Platform
           Product: GStreamer
           Version: 0.10.22
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: blake.tregre at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=205055)
 View: https://bugzilla.gnome.org/attachment.cgi?id=205055
 Review: https://bugzilla.gnome.org/review?bug=667724&attachment=205055

patch adding timeout property

The decklink sdk doesn't provide a reliable EOS indicator.  There is a flag
that specifies whether a frame arrived with carrier signal, but it seems to
give false negatives.  Thus decklinksrc currently doesn't send an EOS signal,
though this could be useful.  

Rather than using decklink's indicator, I've added a timeout property, which
specifies in milliseconds how long to wait for a video frame before declaring
EOS.  A negative or zero value means to use the current behavior of never
sending EOS and waiting forever for a new frame.  I'm not wed to this
implementation, but I do think that the timeout is a useful property.

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