obs-studio/plugins/linux-capture/xhelpers.h

102 lines
2.4 KiB
C

/*
Copyright (C) 2014 by Leonhard Oelke <leonhard@in-verted.de>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#include <X11/Xlib.h>
#include <X11/extensions/XShm.h>
#include <obs.h>
typedef struct {
XShmSegmentInfo info;
XImage *image;
Display *dpy;
bool attached;
} xshm_t;
/**
* Check for Xinerama extension
*
* @return > 0 if Xinerama is available and active
*/
int_fast32_t xinerama_is_active(Display *dpy);
/**
* Get the number of Xinerama screens
*
* @return number of screens
*/
int_fast32_t xinerama_screen_count(Display *dpy);
/**
* Get screen geometry for a Xinerama screen
*
* @note On error the passed coordinates/sizes will be set to 0.
*
* @param dpy X11 display
* @param screen screen number to get geometry for
* @param x x-coordinate of the screen
* @param y y-coordinate of the screen
* @param w width of the screen
* @param h height of the screen
*
* @return < 0 on error
*/
int_fast32_t xinerama_screen_geo(Display *dpy, const int_fast32_t screen,
int_fast32_t *x, int_fast32_t *y, int_fast32_t *w, int_fast32_t *h);
/**
* Get screen geometry for a X11 screen
*
* @note On error the passed sizes will be set to 0.
*
* @param dpy X11 display
* @param screen screen number to get geometry for
* @param w width of the screen
* @param h height of the screen
*
* @return < 0 on error
*/
int_fast32_t x11_screen_geo(Display *dpy, const int_fast32_t screen,
int_fast32_t *w, int_fast32_t *h);
/**
* Attach a shared memory segment to the X-Server
*
* @param dpy X11 Display
* @param screen X11 Screen
* @param w width for the shared memory segment
* @param h height for the shared memory segment
*
* @return NULL on error
*/
xshm_t *xshm_attach(Display *dpy, Screen *screen,
int_fast32_t w, int_fast32_t h);
/**
* Detach a shared memory segment
*/
void xshm_detach(xshm_t *xshm);
#ifdef __cplusplus
}
#endif