static GstStateChangeReturn
gst_base_camera_src_change_state (GstElement * element,
GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstBaseCameraSrc *self = GST_BASE_CAMERA_SRC (element);
GST_DEBUG_OBJECT (self, "%d -> %d",
GST_STATE_TRANSITION_CURRENT (transition),
GST_STATE_TRANSITION_NEXT (transition));
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!construct_pipeline (self))
return GST_STATE_CHANGE_FAILURE;
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
if (!setup_pipeline (self))
return GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
return ret;
}
static gboolean
impl_open (RBPlayer *player,
const char *uri,
gpointer stream_data,
GDestroyNotify stream_data_destroy,
GError **error)
{
RBPlayerGst *mp = RB_PLAYER_GST (player);
if (mp->priv->playbin == NULL) {
if (!construct_pipeline (mp, error))
return FALSE;
}
g_assert (mp->priv->playbin != NULL);
if (uri == NULL) {
return impl_close (player, NULL, error);
}
rb_debug ("setting new uri to %s", uri);
_destroy_next_stream_data (mp);
g_free (mp->priv->prev_uri);
mp->priv->prev_uri = mp->priv->uri;
mp->priv->uri = g_strdup (uri);
mp->priv->next_stream_data = stream_data;
mp->priv->next_stream_data_destroy = stream_data_destroy;
mp->priv->emitted_error = FALSE;
mp->priv->stream_change_pending = TRUE;
return TRUE;
}
static GstStateChangeReturn
gst_base_camera_src_change_state (GstElement * element,
GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstBaseCameraSrc *self = GST_BASE_CAMERA_SRC (element);
GST_DEBUG_OBJECT (self, "%d -> %d",
GST_STATE_TRANSITION_CURRENT (transition),
GST_STATE_TRANSITION_NEXT (transition));
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!construct_pipeline (self))
return GST_STATE_CHANGE_FAILURE;
if (self->preview_pipeline == NULL) {
/* failed to create preview pipeline, fail state change */
return GST_STATE_CHANGE_FAILURE;
}
if (self->preview_caps) {
GST_DEBUG_OBJECT (self,
"Setting preview pipeline caps %" GST_PTR_FORMAT,
self->preview_caps);
gst_camerabin_preview_set_caps (self->preview_pipeline,
self->preview_caps);
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
if (!setup_pipeline (self))
return GST_STATE_CHANGE_FAILURE;
/* without this the preview pipeline will not post buffer
* messages on the pipeline */
gst_element_set_state (self->preview_pipeline->pipeline,
GST_STATE_PLAYING);
if (self->auto_start)
g_signal_emit_by_name (G_OBJECT (self), "start-capture", NULL);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_element_set_state (self->preview_pipeline->pipeline, GST_STATE_READY);
if (self->auto_start)
g_signal_emit_by_name (G_OBJECT (self), "stop-capture", NULL);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
gst_element_set_state (self->preview_pipeline->pipeline, GST_STATE_NULL);
break;
default:
break;
}
return ret;
}
static GstStateChangeReturn
gst_base_camera_src_change_state (GstElement * element,
GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstBaseCameraBinSrc *self = GST_BASE_CAMERA_SRC (element);
GST_DEBUG_OBJECT (self, "%d -> %d",
GST_STATE_TRANSITION_CURRENT (transition),
GST_STATE_TRANSITION_NEXT (transition));
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!construct_pipeline (self))
return GST_STATE_CHANGE_FAILURE;
/* recreate the preview pipeline */
if (self->preview_pipeline && self->preview_filter_changed) {
gst_camerabin_destroy_preview_pipeline (self->preview_pipeline);
self->preview_pipeline = NULL;
}
if (self->preview_pipeline == NULL)
self->preview_pipeline =
gst_camerabin_create_preview_pipeline (GST_ELEMENT_CAST (self),
self->preview_filter);
g_assert (self->preview_pipeline != NULL);
self->preview_filter_changed = FALSE;
if (self->preview_caps) {
GST_DEBUG_OBJECT (self,
"Setting preview pipeline caps %" GST_PTR_FORMAT,
self->preview_caps);
gst_camerabin_preview_set_caps (self->preview_pipeline,
self->preview_caps);
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
if (!setup_pipeline (self))
return GST_STATE_CHANGE_FAILURE;
gst_element_set_state (self->preview_pipeline->pipeline,
GST_STATE_PLAYING);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
gst_element_set_state (self->preview_pipeline->pipeline, GST_STATE_NULL);
break;
default:
break;
}
return ret;
}
