172 lines
4.1 KiB
C
172 lines
4.1 KiB
C
/* $NetBSD: videomode.c,v 1.4 1997/10/19 19:55:56 mycroft Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1995 Christian E. Hopps
|
|
* Copyright (c) 1994 Markus Wild
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Markus Wild
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/device.h>
|
|
#include <amiga/dev/grfioctl.h>
|
|
#include <amiga/dev/grfvar.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
void dump_mode __P((int));
|
|
void dump_vm __P((struct grfvideo_mode *));
|
|
int get_grf __P((void));
|
|
int main __P((int, char **));
|
|
void set_mode __P((int));
|
|
void usage __P((void));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int m;
|
|
int c;
|
|
|
|
if (argc == 1) {
|
|
dump_mode(0);
|
|
return (0);
|
|
}
|
|
while ((c = getopt(argc, argv, "as:")) != -1) {
|
|
switch (c) {
|
|
case 'a':
|
|
if (optind < argc)
|
|
usage();
|
|
dump_mode(-1);
|
|
return (0);
|
|
case 's':
|
|
m = atoi(optarg);
|
|
if (m == 0 || optind < argc)
|
|
usage();
|
|
set_mode(m);
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (argc != 1)
|
|
usage();
|
|
|
|
dump_mode(atoi(*argv));
|
|
return (0);
|
|
}
|
|
|
|
|
|
int
|
|
get_grf()
|
|
{
|
|
struct stat stb;
|
|
char grfname[80];
|
|
int grffd;
|
|
|
|
/* find out on which ite/grf we are */
|
|
if (fstat(0, &stb) == -1)
|
|
err(1, "fstat 0");
|
|
if (!S_ISCHR(stb.st_mode) || !isatty(0))
|
|
errx(1, "stdin not a tty");
|
|
if (major(stb.st_rdev) != 13)
|
|
errx(1, "stdin not an ite device");
|
|
(void)sprintf(grfname, "/dev/grf%d", minor(stb.st_rdev) & 0x7);
|
|
if ((grffd = open(grfname, 2)) < 0)
|
|
err(1, "%s", grfname);
|
|
return (grffd);
|
|
}
|
|
|
|
void
|
|
dump_mode(m)
|
|
int m;
|
|
{
|
|
struct grfvideo_mode vm;
|
|
int num_vm;
|
|
int grffd;
|
|
|
|
grffd = get_grf();
|
|
|
|
if (ioctl(grffd, GRFGETNUMVM, &num_vm) < 0)
|
|
err(1, "GRFGETNUMVM");
|
|
if (m > 0 && m > num_vm)
|
|
errx(1, "no such mode");
|
|
if (m <= 0) {
|
|
(void)printf("Current mode:\n");
|
|
vm.mode_num = 0;
|
|
if (ioctl(grffd, GRFGETVMODE, &vm) == 0)
|
|
dump_vm(&vm);
|
|
(void)printf("\n");
|
|
}
|
|
if (m >= 0)
|
|
return;
|
|
for (m = 1; m <= num_vm; m++) {
|
|
vm.mode_num = m;
|
|
if (ioctl(grffd, GRFGETVMODE, &vm) == -1)
|
|
break;
|
|
dump_vm(&vm);
|
|
}
|
|
}
|
|
|
|
void
|
|
set_mode(m)
|
|
int m;
|
|
{
|
|
int grffd;
|
|
|
|
grffd = get_grf();
|
|
(void)ioctl(grffd, GRFSETVMODE, &m);
|
|
}
|
|
|
|
void
|
|
dump_vm(vm)
|
|
struct grfvideo_mode *vm;
|
|
{
|
|
(void)printf("%d: %s\n", vm->mode_num, vm->mode_descr);
|
|
(void)printf(
|
|
"pixel_clock = %lu, width = %d, height = %d, depth = %d\n",
|
|
vm->pixel_clock, vm->disp_width, vm->disp_height, vm->depth);
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr, "usage: videomode [mode]\n");
|
|
(void)fprintf(stderr, "usage: videomode -a\n");
|
|
(void)fprintf(stderr, "usage: videomode -s mode\n");
|
|
exit(0);
|
|
}
|