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IABSD.fr/xenocara/app/xf86dga/dga.c
matthieu
- app/xf86dga/dga.c
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/* $XFree86: xc/programs/xf86dga/dga.c,v 3.19 2001/10/28 03:34:32 tsi Exp $ */ #include <X11/Xlib.h> #include <X11/Xutil.h> #include <X11/extensions/Xxf86dga.h> #include <sys/time.h> #include <ctype.h> #include <errno.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <signal.h> #include <unistd.h> #define MINMAJOR 0 #define MINMINOR 0 /* copied from xf86Io.c */ static int GetTimeInMillis(void) { struct timeval tp; gettimeofday(&tp, NULL); return(tp.tv_sec * 1000) + (tp.tv_usec / 1000); } int main(int argc, char *argv[]) { int MajorVersion, MinorVersion; int EventBase, ErrorBase; Display *dis; int i, bpp; char *addr; int width, bank, banks, ram; XEvent event; Colormap cmap = 0; Visual *vis; int flags; if (geteuid()) { fprintf(stderr, "Must be suid root\n"); exit(1); } if ( (dis = XOpenDisplay(NULL)) == NULL ) { (void) fprintf( stderr, " cannot connect to X server %s\n", XDisplayName(NULL)); exit( -1 ); } if (!XF86DGAQueryVersion(dis, &MajorVersion, &MinorVersion)) { fprintf(stderr, "Unable to query video extension version\n"); exit(2); } if (!XF86DGAQueryExtension(dis, &EventBase, &ErrorBase)) { fprintf(stderr, "Unable to query video extension information\n"); exit(2); } /* Fail if the extension version in the server is too old */ if (MajorVersion < MINMAJOR || (MajorVersion == MINMAJOR && MinorVersion < MINMINOR)) { fprintf(stderr, "Xserver is running an old XFree86-DGA version" " (%d.%d)\n", MajorVersion, MinorVersion); fprintf(stderr, "Minimum required version is %d.%d\n", MINMAJOR, MINMINOR); exit(2); } XF86DGAQueryDirectVideo(dis, DefaultScreen(dis), &flags); if (!(flags & XF86DGADirectPresent)) { fprintf(stderr, "Xserver driver doesn't support DirectVideo on screen %d\n", DefaultScreen(dis) ); exit(2); } XGrabKeyboard(dis, DefaultRootWindow(dis), True, GrabModeAsync, GrabModeAsync, CurrentTime); /* and all the mouse moves */ XGrabPointer(dis, DefaultRootWindow(dis), True, PointerMotionMask | ButtonPressMask | ButtonReleaseMask, GrabModeAsync, GrabModeAsync, None, None, CurrentTime); /* we want _our_ cmap */ vis = DefaultVisual(dis, DefaultScreen(dis)); bpp = DisplayPlanes (dis, DefaultScreen(dis)); if (bpp <= 8) { cmap = XCreateColormap(dis, DefaultRootWindow(dis), vis, AllocAll); for (i = 0; i < 256; i++) { XColor xcol; xcol.pixel = i; xcol.red = (256 - i) * 255; xcol.green = i * 255; xcol.blue = ((128 - i)%256) * 255; xcol.flags = DoBlue | DoGreen | DoRed; XStoreColor(dis, cmap, &xcol); } } /* * Lets go live */ XF86DGAGetVideo(dis, DefaultScreen(dis), &addr, &width, &bank, &ram); fprintf(stderr, "%x addr:%p, width %d, bank size %d, depth %d planes\n", True, addr, width, bank, bpp); XF86DGADirectVideo(dis, DefaultScreen(dis), XF86DGADirectGraphics| XF86DGADirectMouse| XF86DGADirectKeyb); if (bpp <= 8) { /* must be called _after_ entering DGA DirectGraphics mode */ XF86DGAInstallColormap(dis, DefaultScreen(dis), cmap); } #ifndef __UNIXOS2__ /* Give up root privs */ if (setuid(getuid()) == -1) { fprintf(stderr, "Unable to change uid: %s\n", strerror(errno)); exit(2); } #endif XF86DGASetViewPort(dis, DefaultScreen(dis), 0, 0); banks = (ram * 1024)/bank; #ifdef DEBUG fprintf(stderr, "%x ram:%x, addr %x, banks %d\n", True, ram, addr, banks); #endif while (1) { XMotionEvent *mevent = (XMotionEvent *) &event; XButtonEvent *bevent = (XButtonEvent *) &event; int n_chars = 0; char buf[21]; KeySym ks = 0; i = 0; XNextEvent(dis, &event); switch (event.type) { case KeyPress: n_chars = XLookupString(&event.xkey, buf, 20, &ks, NULL); buf[n_chars] = '\0'; fprintf(stderr,"KeyPress [%d]: %s\n", event.xkey.keycode, buf); if (buf[0] == 'b') { /* * Benchmark mode: run write/read speed test for 1 second each */ int start_clock,finish_clock,diff_clock; int cycles; int size = 64; void *membuf; if (bank < 65536) size = bank / 1024; /* get write timings */ XF86DGASetVidPage(dis, DefaultScreen(dis), i); start_clock = GetTimeInMillis(); finish_clock = start_clock; cycles=0; while ((finish_clock - start_clock) < 1000) { cycles++; memset(addr, (char) (cycles % 255), size * 1024); finish_clock = GetTimeInMillis(); } diff_clock = finish_clock - start_clock; fprintf(stderr, "Framebuffer write speed: %6dK/s\n", (size * 1000 * cycles) / diff_clock); /* get read timings */ if ((membuf=malloc(size*1024))) { XF86DGASetVidPage(dis, DefaultScreen(dis), i); start_clock = GetTimeInMillis(); finish_clock = start_clock; cycles=0; while ((finish_clock - start_clock) < 1000) { cycles++; memcpy(membuf, addr, size * 1024); finish_clock = GetTimeInMillis(); } diff_clock = finish_clock - start_clock; fprintf(stderr, "Framebuffer read speed: %6dK/s\n", (size * 1000 * cycles) / diff_clock); } else fprintf(stderr, "could not allocate scratch buffer -- read timing measurement skipped\n"); } for (i = 0; i < banks; i++) { XF86DGASetVidPage(dis, DefaultScreen(dis), i); memset(addr, buf[0], bank); #ifdef DEBUG fprintf(stderr, "XF86DGASetVidPage(dis, DefaultScreen(dis), %d);\n",i); fprintf(stderr, "memset(addr:%x, buf[0]:%d, bank:%d);\n",addr,buf[0],bank); #endif } break; case KeyRelease: n_chars = XLookupString(&event.xkey, buf, 20, &ks, NULL); buf[n_chars] = '\0'; fprintf(stderr,"KeyRelease[%d]: %s\n", event.xkey.keycode, buf); break; case MotionNotify: fprintf(stderr,"Relative Motion: %d %d\n", mevent->x_root, mevent->y_root); break; case ButtonPress: fprintf(stderr,"Button %d pressed\n", bevent->button); break; case ButtonRelease: fprintf(stderr,"Button %d released\n", bevent->button); break; case Expose: /* maybe we should RaiseWindow? */ break; default: fprintf(stderr,"%X\n", event.type); break; } if (n_chars && (buf[0] == 'q' || buf[0] == 'Q')) { fprintf(stderr,"EXITTING\n"); break; } } /* * back to the X server */ XF86DGADirectVideo(dis, DefaultScreen(dis), 0); fprintf(stderr, "back now in X\n"); /* and give back control */ XUngrabPointer(dis, CurrentTime); XUngrabKeyboard(dis, CurrentTime); fprintf(stderr, "Thats all folks\n"); exit(0); }