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Functions
GQuark | gst_gl_window_error_quark () |
void | (*GstGLWindowResizeCB) () |
#define | GST_GL_WINDOW_RESIZE_CB() |
void | (*GstGLWindowCB) () |
#define | GST_GL_WINDOW_CB() |
GstGLWindow * | gst_gl_window_new () |
void | gst_gl_window_draw () |
void | gst_gl_window_quit () |
void | gst_gl_window_run () |
GstGLContext * | gst_gl_window_get_context () |
guintptr | gst_gl_window_get_display () |
void | gst_gl_window_send_message () |
void | gst_gl_window_send_message_async () |
void | gst_gl_window_set_close_callback () |
void | gst_gl_window_set_draw_callback () |
void | gst_gl_window_set_resize_callback () |
void | gst_gl_window_set_window_handle () |
guintptr | gst_gl_window_get_window_handle () |
void | gst_gl_window_set_preferred_size () |
void | gst_gl_window_show () |
void | gst_gl_window_get_surface_dimensions () |
void | gst_gl_window_handle_events () |
void | gst_gl_window_queue_resize () |
void | gst_gl_window_resize () |
gboolean | gst_gl_window_set_render_rectangle () |
Description
GstGLWindow represents a window that elements can render into. A window can either be a user visible window (onscreen) or hidden (offscreen).
Functions
GST_GL_WINDOW_RESIZE_CB()
#define GST_GL_WINDOW_RESIZE_CB(f) ((GstGLWindowResizeCB) (f))
Cast to the currect function type for window resize callbacks
GST_GL_WINDOW_CB()
#define GST_GL_WINDOW_CB(f) ((GstGLWindowCB) (f))
Cast to the currect function type for generic window callbacks
gst_gl_window_draw ()
void
gst_gl_window_draw (GstGLWindow *window
);
Redraw the window contents. Implementations should invoke the draw callback.
Since: 1.4
gst_gl_window_quit ()
void
gst_gl_window_quit (GstGLWindow *window
);
Quit the runloop's execution.
Since: 1.4
gst_gl_window_run ()
void
gst_gl_window_run (GstGLWindow *window
);
Start the execution of the runloop.
Since: 1.4
gst_gl_window_get_context ()
GstGLContext *
gst_gl_window_get_context (GstGLWindow *window
);
Since: 1.4
gst_gl_window_send_message ()
void gst_gl_window_send_message (GstGLWindow *window
,GstGLWindowCB callback
,gpointer data
);
Invoke callback
with data on the window thread. callback
is guarenteed to
have executed when this function returns.
Parameters
window |
||
callback |
function to invoke. |
[scope async] |
data |
data to invoke |
[closure] |
Since: 1.4
gst_gl_window_send_message_async ()
void gst_gl_window_send_message_async (GstGLWindow *window
,GstGLWindowCB callback
,gpointer data
,GDestroyNotify destroy
);
Invoke callback
with data
on the window thread. The callback may not
have been executed when this function returns.
Parameters
window |
||
callback |
function to invoke. |
[scope async] |
data |
data to invoke |
[closure] |
destroy |
called when |
Since: 1.4
gst_gl_window_set_close_callback ()
void gst_gl_window_set_close_callback (GstGLWindow *window
,GstGLWindowCB callback
,gpointer data
,GDestroyNotify destroy_notify
);
Sets the callback called when the window is about to close.
Parameters
window |
||
callback |
function to invoke. |
[scope notified] |
data |
data to invoke |
[closure] |
destroy_notify |
called when |
Since: 1.4
gst_gl_window_set_draw_callback ()
void gst_gl_window_set_draw_callback (GstGLWindow *window
,GstGLWindowCB callback
,gpointer data
,GDestroyNotify destroy_notify
);
Sets the draw callback called everytime gst_gl_window_draw()
is called
Parameters
window |
||
callback |
function to invoke. |
[scope notified] |
data |
data to invoke |
[closure] |
destroy_notify |
called when |
Since: 1.4
gst_gl_window_set_resize_callback ()
void gst_gl_window_set_resize_callback (GstGLWindow *window
,GstGLWindowResizeCB callback
,gpointer data
,GDestroyNotify destroy_notify
);
Sets the resize callback called everytime a resize of the window occurs.
Parameters
window |
||
callback |
function to invoke. |
[scope notified] |
data |
data to invoke |
[closure] |
destroy_notify |
called when |
Since: 1.4
gst_gl_window_set_window_handle ()
void gst_gl_window_set_window_handle (GstGLWindow *window
,guintptr handle
);
Sets the window that this window
should render into. Some implementations
require this to be called with a valid handle before drawing can commence.
Since: 1.4
gst_gl_window_get_window_handle ()
guintptr
gst_gl_window_get_window_handle (GstGLWindow *window
);
Since: 1.4
gst_gl_window_set_preferred_size ()
void gst_gl_window_set_preferred_size (GstGLWindow *window
,gint width
,gint height
);
Set the preferred width and height of the window. Implementations are free to ignore this information.
Since: 1.6
gst_gl_window_show ()
void
gst_gl_window_show (GstGLWindow *window
);
Present the window to the screen.
Since: 1.6
gst_gl_window_get_surface_dimensions ()
void gst_gl_window_get_surface_dimensions (GstGLWindow *window
,guint *width
,guint *height
);
Since: 1.6
gst_gl_window_handle_events ()
void gst_gl_window_handle_events (GstGLWindow *window
,gboolean handle_events
);
Tell a window
that it should handle events from the window system. These
events are forwarded upstream as navigation events. In some window systems
events are not propagated in the window hierarchy if a client is listening
for them. This method allows you to disable events handling completely
from the window
.
gst_gl_window_set_render_rectangle ()
gboolean gst_gl_window_set_render_rectangle (GstGLWindow *window
,gint x
,gint y
,gint width
,gint height
);
Tell a window
that it should render into a specific region of the window
according to the GstVideoOverlay interface.
Types and Values
GST_GL_WINDOW_ERROR
#define GST_GL_WINDOW_ERROR (gst_gl_window_error_quark ())
Error domain for GStreamer's GL window module. Errors in this domain will be from the GstGLWindowError enumeration
GstGLWindow
typedef struct _GstGLWindow GstGLWindow;
GstGLWindow is an opaque struct and should only be accessed through the provided api.
GstGLWindowClass
typedef struct { GstObjectClass parent_class; guintptr (*get_display) (GstGLWindow *window); void (*set_window_handle) (GstGLWindow *window, guintptr handle); guintptr (*get_window_handle) (GstGLWindow *window); void (*draw) (GstGLWindow *window); void (*run) (GstGLWindow *window); void (*quit) (GstGLWindow *window); void (*send_message) (GstGLWindow *window, GstGLWindowCB callback, gpointer data); void (*send_message_async) (GstGLWindow *window, GstGLWindowCB callback, gpointer data, GDestroyNotify destroy); gboolean (*open) (GstGLWindow *window, GError **error); void (*close) (GstGLWindow *window); void (*handle_events) (GstGLWindow *window, gboolean handle_events); void (*set_preferred_size) (GstGLWindow *window, gint width, gint height); void (*show) (GstGLWindow *window); gboolean (*set_render_rectangle)(GstGLWindow *window, gint x, gint y, gint width, gint height); void (*queue_resize) (GstGLWindow *window); } GstGLWindowClass;
Members
Gets the current windowing system display connection |
||
Set a window handle to render into |
||
Gets the current window handle that this GstGLWindow is
rendering into. This may return a different value to
what is passed into |
||
redraw the window with the specified dimensions |
||
run the mainloop |
||
send a quit to the mainloop |
||
invoke a function on the window thread. Required to be reentrant. |
||
invoke a function on the window thread. |
||
open the connection to the display |
||
close the connection to the display |
||
whether to handle 'extra' events from the windowing system. Basic events like surface moves and resizes are still valid things to listen for. |
||
request that the window change surface size. The implementation is free to ignore this information. |
||
request that the window be shown to the user |
||
request a rectangle to render into. See GstVideoOverlay |
||
request a resize to occur when possible |
Signal Details
The “key-event”
signal
void user_function (GstGLWindow *object, gchar *id, gchar *key, gpointer user_data)
Will be emitted when a key event is received by the GstGLwindow.
Parameters
object |
the GstGLWindow |
|
id |
the name of the event |
|
key |
the id of the key pressed |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run Last
Since: 1.6
The “mouse-event”
signal
void user_function (GstGLWindow *object, gchar *id, gint button, gdouble x, gdouble y, gpointer user_data)
Will be emitted when a mouse event is received by the GstGLwindow.
Parameters
object |
the GstGLWindow |
|
id |
the name of the event |
|
button |
the id of the button |
|
x |
the x coordinate of the mouse event |
|
y |
the y coordinate of the mouse event |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run Last
Since: 1.6