Video window

Window management. More...

Collaboration diagram for Video window:

Modules
	Window event reporting
	Window provider event reporting.

Files
file	vlc_window.h
	Window modules interface.

Data Structures
struct	vlc_window_mouse_event
	Window mouse event. More...
struct	vlc_window_cfg
	Window (desired) configuration. More...
struct	vlc_window_callbacks
	Window event callbacks structure. More...
struct	vlc_window_owner
	Window callbacks and opaque data. More...
struct	vlc_window_operations
	Window implementation callbacks. More...
struct	vlc_window
	Window object. More...

Typedefs
typedef struct vlc_icc_profile_t	vlc_icc_profile_t
typedef struct vlc_window_mouse_event	vlc_window_mouse_event_t
	Window mouse event.
typedef struct vlc_window_cfg	vlc_window_cfg_t
	Window (desired) configuration.
typedef void(*	vlc_window_ack_cb) (struct vlc_window *, unsigned width, unsigned height, void *data)
	Callback prototype for window event acknowledgement.
typedef struct vlc_window_owner	vlc_window_owner_t
	Window callbacks and opaque data.
typedef struct vlc_window	vlc_window_t
	Window object.

Enumerations
enum	vlc_window_type {   VLC_WINDOW_TYPE_DUMMY , VLC_WINDOW_TYPE_XID , VLC_WINDOW_TYPE_HWND , VLC_WINDOW_TYPE_NSOBJECT ,   VLC_WINDOW_TYPE_ANDROID_NATIVE , VLC_WINDOW_TYPE_WAYLAND , VLC_WINDOW_TYPE_DCOMP , VLC_WINDOW_TYPE_KMS ,   VLC_WINDOW_TYPE_MMAL }
	Window handle type. More...
enum	vlc_window_state { VLC_WINDOW_STATE_NORMAL , VLC_WINDOW_STATE_ABOVE , VLC_WINDOW_STATE_BELOW }
	Window states. More...
enum	vlc_window_mouse_event_type { VLC_WINDOW_MOUSE_MOVED , VLC_WINDOW_MOUSE_PRESSED , VLC_WINDOW_MOUSE_RELEASED , VLC_WINDOW_MOUSE_DOUBLE_CLICK }
	Window mouse event types. More...

Functions
vlc_window_t *	vlc_window_New (vlc_object_t *obj, const char *module, const vlc_window_owner_t *owner, const vlc_window_cfg_t *cfg)
	Creates a new window.
void	vlc_window_Delete (vlc_window_t *window)
	Deletes a window.
void	vlc_window_SetInhibition (vlc_window_t *window, bool enabled)
	Inhibits or deinhibits the screensaver.
static void	vlc_window_SetState (vlc_window_t *window, unsigned state)
	Requests a new window state.
void	vlc_window_SetSize (vlc_window_t *window, unsigned width, unsigned height)
	Requests a new window size.
void	vlc_window_SetFullScreen (vlc_window_t *window, const char *id)
	Requests fullscreen mode.
void	vlc_window_UnsetFullScreen (vlc_window_t *window)
	Requests windowed mode.
static void	vlc_window_SetTitle (vlc_window_t *window, const char *title)
	Request a new window title.
int	vlc_window_Enable (vlc_window_t *window)
	Enables a window.
void	vlc_window_Disable (vlc_window_t *window)
	Disables a window.

Detailed Description

Window management.

Window management provides a partial abstraction for windowing systems and rendering targets (i.e. "windows"). See vlc_window_t.

Typedef Documentation

vlc_icc_profile_t

typedef struct vlc_icc_profile_t vlc_icc_profile_t

vlc_window_ack_cb

typedef void(* vlc_window_ack_cb) (struct vlc_window *, unsigned width, unsigned height, void *data)

Callback prototype for window event acknowledgement.

Parameters

width	pixel width as supplied to vlc_window_callbacks::resized
height	pixel height as supplied to vlc_window_callbacks::resized
data	opaque pointer as supplied to vlc_window_callbacks::resized

vlc_window_cfg_t

typedef struct vlc_window_cfg vlc_window_cfg_t

Window (desired) configuration.

This structure describes the intended initial configuration of a vlc_window_t.

vlc_window_mouse_event_t

typedef struct vlc_window_mouse_event vlc_window_mouse_event_t

Window mouse event.

This structure describes a pointer input event on a window.

vlc_window_owner_t

typedef struct vlc_window_owner vlc_window_owner_t

Window callbacks and opaque data.

vlc_window_t

typedef struct vlc_window vlc_window_t

Window object.

This structure is an abstract interface to the windowing system. The window is normally used to draw video (and subpictures) into, but it can also be used for other purpose (e.g. OpenGL visualization).

The window is responsible for providing a window handle, whose exact meaning depends on the windowing system. It also must report some events such as user input (keyboard, mouse) and window resize.

Finally, it must support some control requests such as for fullscreen mode.

Enumeration Type Documentation

vlc_window_mouse_event_type

enum vlc_window_mouse_event_type

Window mouse event types.

This enumeration defines the possible event types vlc_window_mouse_event_t::type.

Enumerator
VLC_WINDOW_MOUSE_MOVED	Pointer position change.
VLC_WINDOW_MOUSE_PRESSED	Pointer button press or single click.
VLC_WINDOW_MOUSE_RELEASED	Pointer button release.
VLC_WINDOW_MOUSE_DOUBLE_CLICK	Double click.

vlc_window_state

enum vlc_window_state

Window states.

Currently, this only handles different window stacking orders. See also vlc_window_SetState().

Enumerator
VLC_WINDOW_STATE_NORMAL	Normal stacking.
VLC_WINDOW_STATE_ABOVE	Stacking above (a.k.a. always on top)
VLC_WINDOW_STATE_BELOW	Stacking below (a.k.a. wall paper mode)

vlc_window_type

enum vlc_window_type

Window handle type.

The window handle type specifies the window system protocol that the window was created with. It determines which members of the vlc_window_t::handle and vlc_window_t::display unions are defined for the given window.

It also establishes some protocol-dependent semantics such as the exact interpretation of the window state (vlc_window_state) and the window size.

Enumerator
VLC_WINDOW_TYPE_DUMMY	Dummy window (not an actual window)
VLC_WINDOW_TYPE_XID	X11 window.
VLC_WINDOW_TYPE_HWND	Win32 or OS/2 window.
VLC_WINDOW_TYPE_NSOBJECT	macOS/iOS view
VLC_WINDOW_TYPE_ANDROID_NATIVE	Android native window.
VLC_WINDOW_TYPE_WAYLAND	Wayland surface.
VLC_WINDOW_TYPE_DCOMP	Win32 DirectComposition.
VLC_WINDOW_TYPE_KMS	DRM KMS CRTC.
VLC_WINDOW_TYPE_MMAL	MMAL window.

Function Documentation

vlc_window_Delete()

void vlc_window_Delete

(

vlc_window_t *

window

)

Deletes a window.

This deletes a window created by vlc_window_New().

Parameters

window

window object to delete

References window_t::active, container_of, vlc_window_operations::destroy, window_t::inhibit, window_t::lock, vlc_window::ops, vlc_inhibit_Destroy(), vlc_mutex_lock(), vlc_mutex_unlock(), VLC_OBJECT, vlc_object_delete, and vlc_objres_clear().

Referenced by vlc_gl_surface_Create(), vlc_gl_surface_Destroy(), and vout_display_window_Delete().

vlc_window_Disable()

void vlc_window_Disable

(

vlc_window_t *

window

)

Disables a window.

This informs the window provider that the window is no longer needed.

Note

The window may be re-enabled later by a call to vlc_window_Enable().

Parameters

window

window to disable

References vlc_window_operations::disable, vlc_window::ops, and vlc_window_SetInhibition().

Referenced by vlc_gl_surface_Create(), vlc_gl_surface_Destroy(), and vout_DisableWindow().

vlc_window_Enable()

int vlc_window_Enable

(

vlc_window_t *

window

)

Enables a window.

This informs the window provider that the window is about to be taken into active use. A window is always initially disabled. This is so that the window provider can provide a persistent connection to the display server, and track any useful events, such as monitors hotplug.

The window handle (vlc_window_t.handle) must remain valid and constant while the window is enabled.

Parameters

window

window to enable

References window_t::cfg, container_of, vlc_window_operations::enable, vlc_window::ops, VLC_SUCCESS, and vlc_window_SetInhibition().

Referenced by EnableWindowLocked(), and vlc_gl_surface_Create().

vlc_window_New()

vlc_window_t * vlc_window_New	(	vlc_object_t *	obj,
		const char *	module,
		const vlc_window_owner_t *	owner,
		const vlc_window_cfg_t *	cfg
	)

Creates a new window.

This function creates a window, or some other kind of rectangle render target.

Parameters

obj	parent VLC object
module	plugin name, NULL for default
owner	callbacks and private data
cfg	initial window configuration, NULL for defaults

Returns

a new window, or NULL on error.

vlc_window_SetFullScreen()

void vlc_window_SetFullScreen	(	vlc_window_t *	window,
		const char *	id
	)

Requests fullscreen mode.

Parameters

window	window to be brought to fullscreen mode.
id	nul-terminated output identifier, NULL for default

References window_t::cfg, container_of, vlc_window_cfg::is_fullscreen, vlc_window::ops, and vlc_window_operations::set_fullscreen.

Referenced by vlc_window_New(), and vout_ChangeFullscreen().

vlc_window_SetInhibition()

void vlc_window_SetInhibition	(	vlc_window_t *	window,
		bool	enabled
	)

Inhibits or deinhibits the screensaver.

Parameters

window	window in respect to which the screensaver should be inhibited or deinhibited
enabled	true to inhibit, false to deinhibit

References window_t::active, container_of, window_t::lock, vlc_mutex_lock(), vlc_mutex_unlock(), and vlc_window_UpdateInhibitionUnlocked().

Referenced by vlc_window_Disable(), vlc_window_Enable(), and vout_ChangePause().

vlc_window_SetSize()

void vlc_window_SetSize	(	vlc_window_t *	window,
		unsigned	width,
		unsigned	height
	)

Requests a new window size.

This requests a change of the window size. In general and unless otherwise stated, the size is expressed in pixels. However, the exact interpretation of the window size depends on the windowing system.

There is no return value as the request may be processed asynchronously, ignored and/or modified by the window system. The actual size of the window is determined by the vlc_window_callbacks::resized callback function that was supplied to vlc_window_New().

Note

The size is expressed in terms of the "useful" area, i.e. it excludes any side decoration added by the windowing system.

Parameters

window	window whom a size change is requested for
width	pixel width
height	height width

References window_t::cfg, container_of, vlc_window_cfg::height, vlc_window::ops, vlc_window_operations::resize, and vlc_window_cfg::width.

Referenced by vlc_window_New(), and vout_display_ResizeWindow().

vlc_window_SetState()

static void vlc_window_SetState ( vlc_window_t *  window, unsigned  state  )

inlinestatic

Requests a new window state.

This requests a change of the state of a window from the windowing system. See vlc_window_state for possible states.

Parameters

window	window whose state to change
state	requested state

References vlc_window::ops, vlc_window_operations::set_state, and state.

Referenced by vout_ChangeWindowState(), and vout_Create().

vlc_window_SetTitle()

static void vlc_window_SetTitle ( vlc_window_t *  window, const char *  title  )

inlinestatic

Request a new window title.

Parameters

window	window to change the title.
title	window title to use.

References vlc_window::ops, and vlc_window_operations::set_title.

vlc_window_UnsetFullScreen()

void vlc_window_UnsetFullScreen

(

vlc_window_t *

window

)

Requests windowed mode.

Parameters

window

window to be brought into windowed mode.

References window_t::cfg, container_of, vlc_window_cfg::is_fullscreen, vlc_window::ops, and vlc_window_operations::unset_fullscreen.

Referenced by vout_ChangeWindowed().