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#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <endian.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <asm/types.h>
#include "v4l.h"
#define QT_CLEAN_NAMESPACE
#include <qapp.h>
extern "C" {
#include <X11/Xlib.h>
#include <X11/extensions/xf86vmode.h>
}
int original_width=0;
int original_height=0;
bool setVidMode(int x, int y, int width, int height) {
Display *dpy=qt_xdisplay();
int screen=DefaultScreen(dpy);
XF86VidModeModeInfo **modes;
XF86VidModeModeLine current_mode;
int current_dot_clock;
int nb_modes;
XF86VidModeGetAllModeLines(dpy, screen, &nb_modes, &modes);
int i, j=-1;
for(i=0; i<nb_modes; i++) {
if(modes[i]->hdisplay==width && modes[i]->vdisplay==height) j=i;
}
if(j!=-1) {
XF86VidModeGetModeLine(dpy, screen, ¤t_dot_clock, ¤t_mode);
original_width=current_mode.hdisplay;
original_height=current_mode.vdisplay;
if(original_width!=width || original_height!=height) {
XF86VidModeLockModeSwitch(dpy, screen, 0);
XF86VidModeSwitchToMode(dpy, screen, modes[j]);
XF86VidModeSetViewPort(dpy, screen, x, y);
}
}
for(i=0; i<nb_modes; i++) {
if(modes[i]->privsize!=0)
#if defined(__cplusplus) || defined(c_plusplus)
XFree(modes[i]->c_private);
#else
XFree(modes[i]->private);
#endif
}
XFree(modes);
if(j==-1) {
return true;
}
return false;
}
void restoreOriginalVidMode() {
if(original_width==0 || original_height==0) return;
Display *dpy=qt_xdisplay();
int screen=DefaultScreen(dpy);
XF86VidModeModeInfo **modes;
int nb_modes;
XF86VidModeGetAllModeLines(dpy, screen, &nb_modes, &modes);
int i, j=-1;
for(i=0; i<nb_modes; i++) {
if(modes[i]->hdisplay==original_width && modes[i]->vdisplay==original_height) j=i;
}
if(j!=-1) {
XF86VidModeLockModeSwitch(dpy, screen, 0);
XF86VidModeSwitchToMode(dpy, screen, modes[j]);
}
for(i=0; i<nb_modes; i++) {
if(modes[i]->privsize!=0)
#if defined(__cplusplus) || defined(c_plusplus)
XFree(modes[i]->c_private);
#else
XFree(modes[i]->private);
#endif
}
XFree(modes);
}
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