[Bug 649832] New: [camerabin2]: negotiation problems when capturing

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=649832
  GStreamer | gst-plugins-bad | git

           Summary: [camerabin2]: negotiation problems when capturing
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: luciana at fujii.eti.br
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=187530)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=187530)
Patch to examples/camerabin2/gst-camera2.c to reproduce the problem

If I set "image-capture-caps" and "video-capture-caps" to caps with resolution
different than 640X480, camerabin2 errors out.

This can be reproduced by tests/examples/camerabin2/gst-camerabin2 if you set
"image-capture-caps" and "video-capture-caps" (patch attached).

The error is:

Error: Device '/dev/video0' cannot capture at 320x240 : gstv4l2object.c(2111):
gst_v4l2_object_set_format ():
/GstCameraBin2:camera/GstWrapperCameraBinSrc:camerasrc/GstAutoVideoSrc:camerasrc-real-src/GstV4l2Src:camerasrc-real-src-actual-src-v4l:
Call to S_FMT failed for YUYV @ 320x240: Device or resource busy
libv4l2: error setting pixformat: Device or resource busy

After talking to Thiago I tested removing "g_object_set (self->output_selector,
"pad-negotiation-mode", 0, NULL);" (line 496) from wrappercamerabinsrc. This
solves the problem for when image-capture-caps and video-capture-caps are the
same, but not for when they are different.

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