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132 lines
3.5 KiB
C
132 lines
3.5 KiB
C
/*
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* gstvaapiutils_x11.c - X11 utilties
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*
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* gstreamer-vaapi (C) 2010 Splitted-Desktop Systems
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*
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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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*
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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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*
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include <glib.h>
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#include <X11/Xutil.h>
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#include "gstvaapiutils_x11.h"
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// X error trap
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static int x11_error_code = 0;
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static int (*old_error_handler)(Display *, XErrorEvent *);
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static int error_handler(Display *dpy, XErrorEvent *error)
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{
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x11_error_code = error->error_code;
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return 0;
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}
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void x11_trap_errors(void)
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{
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x11_error_code = 0;
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old_error_handler = XSetErrorHandler(error_handler);
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}
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int x11_untrap_errors(void)
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{
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XSetErrorHandler(old_error_handler);
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return x11_error_code;
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}
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// X window management
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static const int x11_event_mask = (KeyPressMask |
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KeyReleaseMask |
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ButtonPressMask |
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ButtonReleaseMask |
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PointerMotionMask |
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EnterWindowMask |
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ExposureMask |
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StructureNotifyMask);
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Window
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x11_create_window(Display *display, guint width, guint height)
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{
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Window root_window, window;
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int screen, depth;
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Visual *vis;
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XSetWindowAttributes xswa;
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unsigned long xswa_mask;
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XWindowAttributes wattr;
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unsigned long black_pixel, white_pixel;
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screen = DefaultScreen(display);
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vis = DefaultVisual(display, screen);
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root_window = RootWindow(display, screen);
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black_pixel = BlackPixel(display, screen);
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white_pixel = WhitePixel(display, screen);
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XGetWindowAttributes(display, root_window, &wattr);
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depth = wattr.depth;
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if (depth != 15 && depth != 16 && depth != 24 && depth != 32)
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depth = 24;
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xswa_mask = CWBorderPixel | CWBackPixel;
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xswa.border_pixel = black_pixel;
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xswa.background_pixel = white_pixel;
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window = XCreateWindow(
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display,
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root_window,
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0, 0, width, height,
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0,
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depth,
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InputOutput,
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vis,
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xswa_mask, &xswa
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);
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if (!window)
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return None;
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XSelectInput(display, window, x11_event_mask);
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return window;
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}
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gboolean
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x11_get_geometry(
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Display *dpy,
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Drawable drawable,
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gint *px,
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gint *py,
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guint *pwidth,
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guint *pheight
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)
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{
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Window rootwin;
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int x, y;
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guint width, height, border_width, depth;
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x11_trap_errors();
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XGetGeometry(
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dpy,
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drawable,
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&rootwin,
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&x, &y, &width, &height,
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&border_width,
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&depth
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);
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if (x11_untrap_errors())
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return FALSE;
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if (px) *px = x;
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if (py) *py = y;
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if (pwidth) *pwidth = width;
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if (pheight) *pheight = height;
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return TRUE;
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}
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