A need-context message. More...
#include <gstreamermm/message.h>
Inheritance diagram for Gst::MessageNeedContext:
Public Member Functions | |
| bool | parse (Glib::ustring& context_type) const |
| Parse a context type from an existing Gst::MESSAGE_NEED_CONTEXT message. More... | |
 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... | |
Static Public Member Functions | |
| static Glib::RefPtr< Gst::MessageNeedContext > | create (const Glib::RefPtr< Gst::Object >& src, const Glib::ustring& context_type) |
| This message is posted when an element needs a specific Gst::Context. More... | |
Additional Inherited Members | |
| Public Types inherited from Gst::MiniObject | |
| typedef sigc::slot< void > | SlotFinalizer |
| 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 need-context message.
See create() for more details.
Member Function Documentation
◆ create()
|
static |
This message is posted when an element needs a specific Gst::Context.
- Parameters
-
src The object originating the message. context_type The context type that is needed.
- Returns
- The new need-context message.
MT safe.
◆ parse()
| bool Gst::MessageNeedContext::parse | ( | Glib::ustring & | context_type | ) | const |
Parse a context type from an existing Gst::MESSAGE_NEED_CONTEXT message.
- Parameters
-
context_type The context type.
- Returns
- a bool indicating if the parsing succeeded.
