GstEvent
Structure describing events that are passed up and down a pipeline
The event classes are used to construct and query events.
Events are usually created with gst_event_new() which takes the event type as an argument.
properties specific to the event can be set afterwards with the provided macros.
The event should be unreferenced with gst_event_unref().
gst_event_new_seek() is a usually used to create a seek event and it takes the
needed parameters for a seek event.
gst_event_new_flush() creates a new flush event.
#GstPad, #GstElement
@mini_object:
@type:
@timestamp:
@src:
@structure:
@GST_EVENT_UNKNOWN:
@GST_EVENT_FLUSH_START:
@GST_EVENT_FLUSH_STOP:
@GST_EVENT_EOS:
@GST_EVENT_NEWSEGMENT:
@GST_EVENT_TAG:
@GST_EVENT_FILLER:
@GST_EVENT_QOS:
@GST_EVENT_SEEK:
@GST_EVENT_NAVIGATION:
@GST_EVENT_CUSTOM_UP:
@GST_EVENT_CUSTOM_DS:
@GST_EVENT_CUSTOM_DS_OOB:
@GST_EVENT_CUSTOM_BOTH:
@GST_EVENT_CUSTOM_BOTH_OOB:
The name used for memory allocation tracing
Get the event type.
@event: The event to query.
Get the timestamp of the event.
@event: The event to query.
The source object that generated this event
@event: The event to query
The different types of seek events. When constructing a seek event a format,
a seek method and optional flags are OR-ed together. The seek event is then
inserted into the graph with #gst_pad_send_event() or #gst_element_send_event().
Following example illustrates how to insert a seek event (1 second in the stream)
in a pipeline.
Insertion of a seek event into a pipeline
gboolean res;
GstEvent *event;
event = gst_event_new_seek (
GST_FORMAT_TIME | /* seek on time */
GST_SEEK_METHOD_SET | /* set the absolute position */
GST_SEEK_FLAG_FLUSH, /* flush any pending data */
1 * GST_SECOND); /* the seek offset (1 second) */
res = gst_element_send_event (GST_ELEMENT (osssink), event);
if (!res) {
g_warning ("seek failed");
}
@GST_SEEK_TYPE_NONE:
@GST_SEEK_TYPE_CUR:
@GST_SEEK_TYPE_SET:
@GST_SEEK_TYPE_END:
Increase the refcount of this event
@ev: The event to refcount
Decrease the refcount of an event, freeing it if the refcount reaches 0
@ev: The event to unref
Copy the event using the event specific copy function
@ev: The event to copy
@Returns: A new event that is a copy of the given input event
@type:
@structure:
@Returns:
@event:
@Returns:
@Returns:
@Returns:
@Returns:
@rate:
@format:
@start_value:
@stop_value:
@base:
@Returns:
@event:
@rate:
@format:
@start_value:
@end_value:
@base:
@taglist:
@Returns:
@event:
@taglist:
Create a new dummy event that should be ignored
@Returns:
@proportion:
@diff:
@timestamp:
@Returns:
@event:
@proportion:
@diff:
@timestamp:
@rate:
@format:
@flags:
@cur_type:
@cur:
@stop_type:
@stop:
@Returns:
@type:
@offset:
@event:
@rate:
@format:
@flags:
@cur_type:
@cur:
@stop_type:
@stop:
@structure:
@Returns: