/******************************************************
* gst_v4l2src_capture_stop():
* stop streaming capture
* return value: TRUE on success, FALSE on error
******************************************************/
gboolean
gst_v4l2src_capture_stop (GstV4l2Src * v4l2src)
{
GST_DEBUG_OBJECT (v4l2src, "stopping capturing");
if (!GST_V4L2_IS_OPEN (v4l2src->v4l2object)) {
goto done;
}
if (!GST_V4L2_IS_ACTIVE (v4l2src->v4l2object)) {
goto done;
}
if (v4l2src->use_mmap) {
/* we actually need to sync on all queued buffers but not
* on the non-queued ones */
if (!gst_v4l2_object_stop_streaming (v4l2src->v4l2object)) {
return FALSE;
}
}
done:
/* make an optional pending wait stop */
v4l2src->quit = TRUE;
v4l2src->is_capturing = FALSE;
return TRUE;
}
static GstStateChangeReturn
gst_v4l2sink_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstV4l2Sink *v4l2sink = GST_V4L2SINK (element);
GST_DEBUG_OBJECT (v4l2sink, "%d -> %d",
GST_STATE_TRANSITION_CURRENT (transition),
GST_STATE_TRANSITION_NEXT (transition));
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
/* open the device */
if (!gst_v4l2_object_start (v4l2sink->v4l2object))
return GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
if (v4l2sink->state == STATE_STREAMING) {
if (!gst_v4l2_object_stop_streaming (v4l2sink->v4l2object)) {
return GST_STATE_CHANGE_FAILURE;
}
v4l2sink->state = STATE_PENDING_STREAMON;
}
break;
case GST_STATE_CHANGE_READY_TO_NULL:
if (NULL != v4l2sink->pool)
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;
v4l2sink->state = STATE_OFF;
break;
default:
break;
}
return ret;
}
