gstreamermm
1.4.3
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A duration message. More...
Public Member Functions | |
void | parse (Format& format, gint64& duration) const |
Extracts the duration and format from the duration message. More... | |
gint64 | parse () const |
Extracts and returns the duration from the duration message. More... | |
Format | parse_format () const |
Extracts and returns the format from the duration message. More... | |
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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... | |
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... | |
MessageType | get_message_type () const |
Get the GstMessageType of message. More... | |
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 |
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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 () | |
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... | |
Static Public Member Functions | |
static Glib::RefPtr < Gst::MessageDuration > | create (const Glib::RefPtr< Gst::Object >& src, Format format, gint64 duration) |
Create a new duration message. More... | |
Additional Inherited Members | |
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typedef sigc::slot< void > | SlotFinalizer |
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Message () | |
void | operator delete (void*, std::size_t) |
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MiniObject () | |
void | operator delete (void*, std::size_t) |
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template<class MsgType > | |
static Glib::RefPtr< MsgType > | wrap (GstMessage* message, bool take_copy=false) |
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Glib::RefPtr< Gst::Message > | wrap (GstMessage* object, bool take_copy=false) |
A Glib::wrap() method for this object. More... | |
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Glib::RefPtr< Gst::MiniObject > | wrap (GstMiniObject* object, bool take_copy=false) |
A Glib::wrap() method for this object. More... | |
A duration message.
See create() for more details.
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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. |
void Gst::MessageDuration::parse | ( | Format& | format, |
gint64 & | duration | ||
) | const |
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. |
duration | Result location for the duration. |
gint64 Gst::MessageDuration::parse | ( | ) | const |
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.
Format Gst::MessageDuration::parse_format | ( | ) | const |
Extracts and returns the format from the duration message.
Applications should always use a query to retrieve the duration of a pipeline.
MT safe.