[gstreamer-bugs] [Bug 575391] Cannot fetch a picture (stream) from an older Philips 646 webcam.

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | don't know | Ver: 0.10.22




------- Comment #17 from Stefan Kost (gstreamer, gtkdoc dev)  2009-03-24 11:38 UTC -------
this is what happens:
v4l2src v4l2src_calls.c:1021:gst_v4l2src_grab_frame:<v4l2src0> problem grabbing
frame 0 (ix=0), trials=50, pool-ct=3, buf.flags=0
v4l2src v4l2src_calls.c:1074:gst_v4l2src_grab_frame:<v4l2src0> Grabbing frame
got interrupted on /dev/video0 unexpectedly. 14: Bad address.

errno=14 is EFAULT and according http://v4l2spec.bytesex.org/spec/r12878.htm
this is not among the expected errors. I'd say your driver does not really work
with mmap.

In v4l2src_calls.c::gst_v4l2src_capture_init() it activates use_mmap=TRUE. You
you set this there to FALSE to test wheter the driver works with read. But
anyway file a bug agaianst the driver.


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