136 lines
3.2 KiB
C
136 lines
3.2 KiB
C
/*
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Copyright (C) 2014 by Leonhard Oelke <leonhard@in-verted.de>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <X11/Xlib.h>
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#include <X11/extensions/XShm.h>
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#include <xcb/shm.h>
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#include <xcb/xproto.h>
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#include <obs.h>
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typedef struct {
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XShmSegmentInfo info;
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XImage *image;
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Display *dpy;
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bool attached;
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} xshm_t;
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typedef struct {
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xcb_connection_t *xcb;
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xcb_shm_seg_t seg;
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int shmid;
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uint8_t *data;
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} xcb_shm_t;
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/**
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* Check for Xinerama extension
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*
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* @return > 0 if Xinerama is available and active
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*/
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int_fast32_t xinerama_is_active(Display *dpy);
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/**
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* Get the number of Xinerama screens
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*
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* @return number of screens
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*/
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int_fast32_t xinerama_screen_count(Display *dpy);
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/**
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* Get screen geometry for a Xinerama screen
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*
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* @note On error the passed coordinates/sizes will be set to 0.
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*
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* @param dpy X11 display
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* @param screen screen number to get geometry for
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* @param x x-coordinate of the screen
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* @param y y-coordinate of the screen
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* @param w width of the screen
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* @param h height of the screen
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*
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* @return < 0 on error
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*/
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int_fast32_t xinerama_screen_geo(Display *dpy, const int_fast32_t screen,
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int_fast32_t *x, int_fast32_t *y, int_fast32_t *w, int_fast32_t *h);
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/**
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* Get screen geometry for a X11 screen
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*
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* @note On error the passed sizes will be set to 0.
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*
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* @param dpy X11 display
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* @param screen screen number to get geometry for
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* @param w width of the screen
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* @param h height of the screen
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*
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* @return < 0 on error
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*/
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int_fast32_t x11_screen_geo(Display *dpy, const int_fast32_t screen,
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int_fast32_t *w, int_fast32_t *h);
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/**
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* Attach a shared memory segment to the X-Server
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*
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* @param dpy X11 Display
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* @param screen X11 Screen
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* @param w width for the shared memory segment
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* @param h height for the shared memory segment
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*
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* @return NULL on error
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*/
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xshm_t *xshm_attach(Display *dpy, Screen *screen,
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int_fast32_t w, int_fast32_t h);
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/**
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* Detach a shared memory segment
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*/
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void xshm_detach(xshm_t *xshm);
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/**
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* Attach a shared memory segment to the X-Server
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*
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* @param xcb xcb connection
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* @param w width of the captured screen
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* @param h height of the captured screen
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*
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* @return NULL on error
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*/
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xcb_shm_t *xshm_xcb_attach(xcb_connection_t *xcb, const int w, const int h);
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/**
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* Detach a shared memory segment
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*/
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void xshm_xcb_detach(xcb_shm_t *shm);
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/**
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* Get screen by id for a xcb connection
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*
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* @param xcb xcb connection
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* @param screen id of the screen
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* @return screen info structure
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*/
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xcb_screen_t *xcb_get_screen(xcb_connection_t *xcb, int screen);
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#ifdef __cplusplus
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}
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#endif
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