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Diffstat (limited to '')
| -rw-r--r-- | test/video.c | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/test/video.c b/test/video.c deleted file mode 100644 index fae421e..0000000 --- a/test/video.c +++ /dev/null @@ -1,182 +0,0 @@ -#define USAGE \ -"\n" \ -"\n A tiny video watching application, just starts capturing /dev/video" \ -"\n into /dev/fb0." \ -"\n Be shure to have >8Bit/pixel color resolution and r/w access for " \ -"\n /dev/video0, /dev/fb0 and /dev/tty0 to let this work..." \ -"\n" \ -"\n compile with" \ -"\n" \ -"\n $ gcc -g -Wall -O2 -o video video.c -I../../ost/include" \ -"\n" - -#include <sys/mman.h> -#include <sys/ioctl.h> -#include <sys/types.h> -#include <sys/time.h> -#include <unistd.h> -#include <fcntl.h> -#include <signal.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include <linux/fb.h> -#include <linux/videodev.h> - -#define VIDEO_DEV "/dev/video0" -#define FB_DEV "/dev/fb0" -#define VT_DEV "/dev/tty0" - -static char *video_devname = VIDEO_DEV; - -#define min(a,b) (a) < (b) ? (a) : (b) - -static int zero = 0; -static int one = 1; - -static struct fb_var_screeninfo fb_var; -static struct fb_fix_screeninfo fb_fix; - - -int init_fb (void) -{ - const char blankoff_str[] = "\033[9;0]"; - int fd, vt_fd; - - fd = open (FB_DEV, O_RDWR); - if (fd < 0) { - perror("Could not open " FB_DEV ", please check permissions\n"); - return 1; - } - - if ((vt_fd = open( VT_DEV, O_RDWR )) < 0) { - perror("Could not open " VT_DEV ", please check permissions\n"); - return 1; - } - - write( vt_fd, blankoff_str, strlen(blankoff_str) ); - - if (ioctl (fd, FBIOGET_VSCREENINFO, &fb_var) < 0) { - perror("Could not get variable screen information (fb_var)\n"); - return 1; - } - - if (ioctl (fd, FBIOGET_FSCREENINFO, &fb_fix) < 0) { - perror("Could not get fixed screen information (fb_fix)\n"); - return 1; - } - - close (fd); - return 0; -} - - -int init_video (int stop) -{ - int fd; - struct video_capability vcap; - - if ((fd = open (video_devname, O_RDWR)) < 0) { - fprintf (stderr, - "%s: Could not open %s, please check permissions\n", - __FUNCTION__, video_devname); - return -1; - } - - ioctl(fd, VIDIOCGCAP, &vcap); - - if (ioctl(fd, VIDIOCCAPTURE, &zero) < 0) { - perror("Could not stop capturing (VIDIOCCAPTURE failed)\n"); - return -2; - } - - if (stop) - return 0; - - { - struct video_buffer b; - b.base = (void*) fb_fix.smem_start; - b.width = fb_var.xres; - b.height = fb_var.yres; - b.depth = fb_var.bits_per_pixel; - b.bytesperline = fb_var.xres*((fb_var.bits_per_pixel+7)/8); - if (ioctl(fd, VIDIOCSFBUF, &b) < 0) { - fprintf(stderr, "VIDIOCSFBUF failed, must run as root?\n"); - return -3; - } - } - - { - struct video_picture p; - if (ioctl(fd, VIDIOCGPICT, &p) < 0) { - perror("VIDIOCGPICT failed\n"); - return -4; - } - p.depth = fb_var.bits_per_pixel; - switch (fb_var.bits_per_pixel) { - case 16: - p.palette = VIDEO_PALETTE_RGB565; - break; - case 24: - p.palette = VIDEO_PALETTE_RGB24; - break; - case 32: - p.palette = VIDEO_PALETTE_RGB32; - break; - } - //p.contrast = 0x8000; - //p.colour = 0x6000; - if (ioctl(fd, VIDIOCSPICT, &p) < 0) { - perror("VIDIOCSPICT failed\n"); - return -5; - } - } - - { - struct video_window win; - win.width = min((__u32) vcap.maxwidth, fb_var.xres); - win.height = min((__u32) vcap.maxheight, fb_var.yres); - win.x = 0; - win.y = 0; - win.flags = 0; - win.clips = NULL; - win.clipcount = 0; - win.chromakey = 0; - if (ioctl(fd, VIDIOCSWIN, &win) < 0) { - perror("VIDIOCSWIN failed\n"); - return -6; - } - } - - if (ioctl(fd, VIDIOCCAPTURE, &one) < 0) { - perror("Could not start capturing (VIDIOCCAPTURE failed)\n"); - return -7; - } - - close (fd); - - return 0; -} - -int main (int argc, char **argv) -{ - int err = 0, stop = 0; - - if ((err = init_fb())) - return err; - - if ((argc == 2 && strcmp(argv[1], "stop") == 0) || - (argc == 3 && strcmp(argv[2], "stop") == 0)) - stop = 1; - - if ((argc == 2 && !stop) || argc == 3) - video_devname = argv[1]; - - if (argc != 1 && argc != 2 && !(argc == 3 && stop)) { - fprintf(stderr, "usage: %s <devname> <stop>\n" USAGE, argv[0]); - exit (-1); - } - - return init_video (stop); -} |