[gstreamer-bugs] [Bug 536994] New: Improve v4l2src negotiation a bit more

[GStreamer (bugzilla.gnome.org) <bug...@bu...>]

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  GStreamer | gst-plugins-good | Ver: HEAD CVS
           Summary: Improve v4l2src negotiation a bit more
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gst...@li...
        ReportedBy: sj...@lu...
         QAContact: gst...@li...
     GNOME version: Unspecified
   GNOME milestone: Unspecified


The last change to the v4l2src makes it try to pick an optimal resolution. This
currently only works nicely when the camera can actually deliver that
resolution.. Say my camera can do up to 1600x1200 and the various resolutions
it can provide includes 320x240, but not 300x200. In a pipeline with as target
resolution 320x240 the camera will actually capture at that size, but if you
request 300x200 then it'll capture at 1600x1200 and waste a lot of cpu on
downscaling

Instead if the intersection of the caps result in multiple (resolution) option
it should pick the smallest one greater then the resolution specified in the
first caps entry of the peer


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