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v4l2sink: destroy buffer pool when changing state to NULL

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In the case we change the State from READY_TO_NULL the buffers in the pool
still hold an open dup file descriptor to the device, therefore the device
release function will not be called and the device will probably answer with
-EBUSY when we reopen it in the next NULL_TO_READY transition.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>

See bug #622500 and #612244.
This commit is contained in:
Michael Grzeschik 2010-06-23 11:47:43 +02:00 committed by Tim-Philipp Müller
parent 8aed3176ce
commit 34c7cabe2c
1 changed files with 2 additions and 0 deletions
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2
sys/v4l2/gstv4l2sink.c
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@ -461,6 +461,8 @@ gst_v4l2sink_change_state (GstElement * element, GstStateChange transition)
}
break;
case GST_STATE_CHANGE_READY_TO_NULL:
gst_v4l2_buffer_pool_destroy (v4l2sink->pool);
v4l2sink->pool = NULL;
/* close the device */
if (!gst_v4l2_object_stop (v4l2sink->v4l2object))
return GST_STATE_CHANGE_FAILURE;