#include <message.h>
Public Member Functions | |
MessageDuration (GstMessage* castitem) | |
void | parse (Format& format, gint64& position) |
Extracts the duration and format from the duration message. | |
gint64 | parse () |
Extracts and returns the duration from the duration message. | |
Format | parse_format () |
Extracts and returns the format from the duration message. | |
Static Public Member Functions | |
static Glib::RefPtr<Gst::Message> | create (const Glib::RefPtr<Gst::Object>& src, Format format, gint64 position) |
Create a new duration message. |
See create() for more details.
Gst::MessageDuration::MessageDuration | ( | GstMessage * | castitem | ) | [explicit] |
static Glib::RefPtr<Gst::Message> Gst::MessageDuration::create | ( | const Glib::RefPtr<Gst::Object>& | src, | |
Format | format, | |||
gint64 | position | |||
) | [static] |
Create a new duration message.
This message is posted by elements that know the duration of a stream in a specific format. This message is received by bins and is used to calculate the total duration of a pipeline. Elements may post a duration message with a duration of Gst::CLOCK_TIME_NONE to indicate that the duration has changed and the cached duration should be discarded. The new duration can then be retrieved via a query.
src | The object originating the message. | |
format | The format of the duration. | |
duration | The new duration. |
gint64 Gst::MessageDuration::parse | ( | ) |
Extracts and returns the duration from the duration message.
The duration might be Gst::CLOCK_TIME_NONE, which indicates that the duration has changed. Applications should always use a query to retrieve the duration of a pipeline.
MT safe.
void Gst::MessageDuration::parse | ( | Format& | format, | |
gint64 & | position | |||
) |
Extracts the duration and format from the duration message.
The duration might be Gst::CLOCK_TIME_NONE, which indicates that the duration has changed. Applications should always use a query to retrieve the duration of a pipeline.
MT safe.
format | Result location for the format. | |
position | Result location for the position. |
Format Gst::MessageDuration::parse_format | ( | ) |
Extracts and returns the format from the duration message.
Applications should always use a query to retrieve the duration of a pipeline.
MT safe.