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element: API: Add GstElement::post_message() vfunc

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Conflicts:
	gst/gstelement.h
This commit is contained in:
Sebastian Dröge 2012-10-16 12:31:50 +02:00
parent f354e12b09
commit 1c4fe1bf1a
2 changed files with 39 additions and 17 deletions
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50
gst/gstelement.c
View file

@ -130,6 +130,9 @@ static GstStateChangeReturn gst_element_set_state_func (GstElement * element,
static gboolean gst_element_set_clock_func (GstElement * element,
GstClock * clock);
static void gst_element_set_bus_func (GstElement * element, GstBus * bus);
static gboolean gst_element_post_message_default (GstElement * element,
GstMessage * message);
static gboolean gst_element_default_send_event (GstElement * element,
GstEvent * event);
@ -235,6 +238,7 @@ gst_element_class_init (GstElementClass * klass)
klass->query = GST_DEBUG_FUNCPTR (gst_element_default_query);
klass->send_event = GST_DEBUG_FUNCPTR (gst_element_default_send_event);
klass->numpadtemplates = 0;
klass->post_message = GST_DEBUG_FUNCPTR (gst_element_post_message_default);
klass->elementfactory = NULL;
}
@ -1662,22 +1666,8 @@ gst_element_query (GstElement * element, GstQuery * query)
return result;
}
/**
* gst_element_post_message:
* @element: a #GstElement posting the message
* @message: (transfer full): a #GstMessage to post
*
* Post a message on the element's #GstBus. This function takes ownership of the
* message; if you want to access the message after this call, you should add an
* additional reference before calling.
*
* Returns: %TRUE if the message was successfully posted. The function returns
* %FALSE if the element did not have a bus.
*
* MT safe.
*/
gboolean
gst_element_post_message (GstElement * element, GstMessage * message)
static gboolean
gst_element_post_message_default (GstElement * element, GstMessage * message)
{
GstBus *bus;
gboolean result = FALSE;
@ -1712,6 +1702,34 @@ no_bus:
}
}
/**
* gst_element_post_message:
* @element: a #GstElement posting the message
* @message: (transfer full): a #GstMessage to post
*
* Post a message on the element's #GstBus. This function takes ownership of the
* message; if you want to access the message after this call, you should add an
* additional reference before calling.
*
* Returns: %TRUE if the message was successfully posted. The function returns
* %FALSE if the element did not have a bus.
*
* MT safe.
*/
gboolean
gst_element_post_message (GstElement * element, GstMessage * message)
{
GstElementClass *klass;
g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);
klass = GST_ELEMENT_GET_CLASS (element);
if (klass->post_message)
return klass->post_message (element, message);
return FALSE;
}
/**
* _gst_element_error_printf:
* @format: the printf-like format to use, or %NULL

6
gst/gstelement.h
View file

@ -591,6 +591,8 @@ struct _GstElement
* @send_event: send a #GstEvent to the element
* @query: perform a #GstQuery on the element
* @state_changed: called immediately after a new state was set.
* @post_message: called when a message is posted on the element. Chain up to
* the parent class' handler to have it posted on the bus.
*
* GStreamer element class. Override the vmethods to implement the element
* functionality.
@ -645,8 +647,10 @@ struct _GstElementClass
gboolean (*query) (GstElement *element, GstQuery *query);
gboolean (*post_message) (GstElement *element, GstMessage *message);
/*< private >*/
gpointer _gst_reserved[GST_PADDING_LARGE];
gpointer _gst_reserved[GST_PADDING_LARGE-1];
};
/* element class pad templates */