A duration message. More...
#include <gstreamermm/message.h>
Inheritance diagram for Gst::MessageDurationChanged:
Static Public Member Functions | |
| static Glib::RefPtr< Gst::MessageDurationChanged > | create (const Glib::RefPtr< Gst::Object >& src) |
| Create a new duration changed message. More... | |
Additional Inherited Members | |
 Public Types inherited from Gst::MiniObject | |
| typedef sigc::slot< void > | SlotFinalizer |
| Public Member Functions inherited from Gst::Message | |
| void | reference () const |
| Increment the reference count for this object. More... | |
| void | unreference () const |
| Decrement the reference count for this object. More... | |
| GstMessage* | gobj () |
| Provides access to the underlying C instance. More... | |
| const GstMessage* | gobj () const |
| Provides access to the underlying C instance. More... | |
| GstMessage* | gobj_copy () const |
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More... | |
| Message ()=delete | |
| Message (const Message&)=delete | |
| Message& | operator= (const Message&)=delete |
| Gst::Structure | get_structure () const |
| Access the structure of the message. More... | |
| Glib::RefPtr< Gst::Message > | create_writable () |
| Checks if a message is writable. More... | |
| guint32 | get_seqnum () const |
| Retrieve the sequence number of a message. More... | |
| void | set_seqnum (guint32 seqnum) |
| Set the sequence number of a message. More... | |
| Glib::RefPtr< Gst::Message > | copy () const |
| Creates a copy of the message. More... | |
| MessageType | get_message_type () const |
| Get the GstMessageType of message. More... | |
| Gst::ClockTime | get_timestamp () const |
| Get the timestamp of message. More... | |
| Glib::RefPtr< Gst::Object > | get_source () |
| Get the object that posted the message. More... | |
| Glib::RefPtr< const Gst::Object > | get_source () const |
| bool | has_name (const Glib::ustring& name) const |
| Checks if message has the given name. More... | |
| Public Member Functions inherited from Gst::MiniObject | |
| void | reference () const |
| Increment the reference count for this object. More... | |
| void | unreference () const |
| Decrement the reference count for this object. More... | |
| GstMiniObject* | gobj () |
| Provides access to the underlying C instance. More... | |
| const GstMiniObject* | gobj () const |
| Provides access to the underlying C instance. More... | |
| GstMiniObject* | gobj_copy () const |
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More... | |
| MiniObject ()=delete | |
| MiniObject (const MiniObject&)=delete | |
| MiniObject& | operator= (const MiniObject&)=delete |
| ~MiniObject () | |
| guint | get_flags () const |
| void | set_flags (const guint& value) |
| gint | get_refcount () const |
| gint | get_lockstate () const |
| bool | lock (LockFlags flags) |
| Lock the mini-object with the specified access mode in flags. More... | |
| void | unlock (LockFlags flags) |
| Unlock the mini-object with the specified access mode in flags. More... | |
| bool | is_writable () const |
| If mini_object has the LOCKABLE flag set, check if the current EXCLUSIVE lock on object is the only one, this means that changes to the object will not be visible to any other object. More... | |
| Glib::RefPtr< MiniObject > | create_writable () |
| Checks if a mini-object is writable. More... | |
| void | set_qdata (GQuark quark, QuarkData* data) |
| This sets an opaque, named pointer on a miniobject. More... | |
| QuarkData* | get_qdata (GQuark quark) const |
| This function gets back user data pointers stored via set_qdata(). More... | |
| QuarkData* | steal_qdata (GQuark quark) |
| This function gets back user data pointers stored via set_qdata() and removes the data from object without invoking its destroy() function (if any was set). More... | |
| void | add_finalize_notifier (const SlotFinalizer& slot) |
| Adds notifier when mini object is finalized. More... | |
| void | remove_finalize_notifier () |
| Remove finalize notifier. More... | |
| Protected Member Functions inherited from Gst::Message | |
| void | operator delete (void*, std::size_t) |
| Protected Member Functions inherited from Gst::MiniObject | |
| void | operator delete (void*, std::size_t) |
| Related Functions inherited from Gst::Message | |
| Glib::RefPtr< Gst::Message > | wrap (GstMessage* object, bool take_copy=false) |
| A Glib::wrap() method for this object. More... | |
| Related Functions inherited from Gst::MiniObject | |
| Glib::RefPtr< Gst::MiniObject > | wrap (GstMiniObject* object, bool take_copy=false) |
| A Glib::wrap() method for this object. More... | |
Detailed Description
A duration message.
See create() for more details.
Member Function Documentation
◆ create()
|
static |
Create a new duration changed message.
This message is posted by elements that know the duration of a stream when the duration changes. 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.
- Parameters
-
src The object originating the message.
- Returns
- The new duration-changed message.
MT safe.
