common.c File Reference

Include dependency graph for common.c:

Functions
int	CheckError (vout_display_t *vd, xcb_connection_t *conn, const char *str, xcb_void_cookie_t ck)
	Check for an error.
xcb_connection_t *	Connect (vlc_object_t *obj)
	Connect to the X server.
vout_window_t *	GetWindow (vout_display_t *vd, xcb_connection_t *conn, const xcb_screen_t **restrict pscreen, bool *restrict pshm)
	Create a VLC video X window object, find the corresponding X server screen, and probe the MIT-SHM extension.
int	GetWindowSize (struct vout_window_t *wnd, xcb_connection_t *conn, unsigned *restrict width, unsigned *restrict height)
	Gets the size of an X window.
xcb_cursor_t	CreateBlankCursor (xcb_connection_t *conn, const xcb_screen_t *scr)
	Create a blank cursor.
int	PictureResourceAlloc (vout_display_t *vd, picture_resource_t *res, size_t size, xcb_connection_t *conn, bool attach)
	Initialize a picture buffer as shared memory, according to the video output format.
void	PictureResourceFree (picture_resource_t *res, xcb_connection_t *conn)
	Release picture private data: detach the shared memory segment.

---

Function Documentation

int CheckError	(	vout_display_t *	vd,
		xcb_connection_t *	conn,
		const char *	str,
		xcb_void_cookie_t	ck
	)

Check for an error.

References err, msg_Err, VLC_EGENERIC, and VLC_SUCCESS.

Referenced by PictureResourceAlloc().

xcb_connection_t* Connect

(

vlc_object_t *

obj

)

Connect to the X server.

References msg_Dbg, msg_Err, strndup(), and var_CreateGetNonEmptyString.

xcb_cursor_t CreateBlankCursor	(	xcb_connection_t *	conn,
		const xcb_screen_t *	scr
	)

Create a blank cursor.

Note that the pixmaps are leaked (until the X disconnection). Hence, this function should be called no more than once per X connection.

Parameters:

	conn	XCB connection
	scr	target XCB screen

vout_window_t* GetWindow	(	vout_display_t *	vd,
		xcb_connection_t *	conn,
		const xcb_screen_t **restrict	pscreen,
		bool *restrict	pshm
	)			[read]

Create a VLC video X window object, find the corresponding X server screen, and probe the MIT-SHM extension.

References vout_display_t::cfg, vout_display_cfg_t::display, vout_window_t::handle, vout_display_cfg_t::height, vout_window_cfg_t::height, i, msg_Dbg, msg_Err, msg_Warn, vout_window_cfg_t::type, var_CreateGetBool, vout_display_DeleteWindow(), vout_display_NewWindow(), VOUT_WINDOW_TYPE_XID, vout_display_cfg_t::width, vout_window_cfg_t::width, and vout_window_t::xid.

int GetWindowSize	(	struct vout_window_t *	wnd,
		xcb_connection_t *	conn,
		unsigned *restrict	width,
		unsigned *restrict	height
	)

Gets the size of an X window.

References vout_window_t::handle, and vout_window_t::xid.

int PictureResourceAlloc	(	vout_display_t *	vd,
		picture_resource_t *	res,
		size_t	size,
		xcb_connection_t *	conn,
		bool	attach
	)

Initialize a picture buffer as shared memory, according to the video output format.

If a attach is true, the segment is attached to the X server (MIT-SHM extension).

References CheckError(), msg_Err, msg_Info, picture_resource_t::p, picture_resource_t::p_pixels, picture_resource_t::p_sys, picture_sys_t::segment, VLC_EGENERIC, and VLC_SUCCESS.

Referenced by Get().

void PictureResourceFree	(	picture_resource_t *	res,
		xcb_connection_t *	conn
	)

Release picture private data: detach the shared memory segment.

References picture_resource_t::p, picture_resource_t::p_pixels, picture_resource_t::p_sys, and picture_sys_t::segment.

Referenced by Get(), and ResetPictures().