int main(int argc, char **argv)
{
for (;;) {
int index, c = 0;
c = getopt_long(argc, argv, short_options, long_options, &index);
if (-1 == c)
break;
switch (c) {
case 0: /* getopt_long() flag */
break;
case 'd':
deviceName = optarg;
break;
case 'h':
// print help
usage(stdout, argc, argv);
exit(EXIT_SUCCESS);
case 'o':
// set jpeg filename
jpegFilename = optarg;
break;
case 'q':
// set jpeg quality
jpegQuality = atoi(optarg);
break;
case 'm':
#ifdef IO_MMAP
io = IO_METHOD_MMAP;
#else
fprintf(stderr, "You didn't compile for mmap support.\n");
exit(EXIT_FAILURE);
#endif
break;
case 'r':
#ifdef IO_READ
io = IO_METHOD_READ;
#else
fprintf(stderr, "You didn't compile for read support.\n");
exit(EXIT_FAILURE);
#endif
break;
case 'u':
#ifdef IO_USERPTR
io = IO_METHOD_USERPTR;
#else
fprintf(stderr, "You didn't compile for userptr support.\n");
exit(EXIT_FAILURE);
#endif
break;
case 'W':
// set width
width = atoi(optarg);
break;
case 'H':
// set height
height = atoi(optarg);
break;
case 'I':
// set fps
fps = atoi(optarg);
break;
case 'c':
// set flag for continuous capture, interuptible by sigint
continuous = 1;
InstallSIGINTHandler();
break;
case 'v':
printf("Version: %s\n", VERSION);
exit(EXIT_SUCCESS);
break;
default:
usage(stderr, argc, argv);
exit(EXIT_FAILURE);
}
}
// check for need parameters
if (!jpegFilename) {
fprintf(stderr, "You have to specify JPEG output filename!\n\n");
usage(stdout, argc, argv);
exit(EXIT_FAILURE);
}
if(continuous == 1) {
int max_name_len = snprintf(NULL,0,continuousFilenameFmt,jpegFilename,UINT32_MAX,INT64_MAX);
jpegFilenamePart = jpegFilename;
jpegFilename = calloc(max_name_len+1,sizeof(char));
strcpy(jpegFilename,jpegFilenamePart);
}
// open and initialize device
deviceOpen();
deviceInit();
// start capturing
captureStart();
// process frames
mainLoop();
// stop capturing
captureStop();
// close device
deviceUninit();
deviceClose();
if(jpegFilenamePart != 0) {
free(jpegFilename);
}
exit(EXIT_SUCCESS);
return 0;
}
int main()
{
fd = open("/dev/video0", O_RDWR | O_NONBLOCK, 0);
if (-1 == fd)
{
perror("camera open error");
return -1;
} else printf("camera opened & fd=%d\n",fd);
struct v4l2_capability cap;
struct v4l2_cropcap cropcap;
struct v4l2_crop crop;
struct v4l2_format fmt;
if (-1 == ioctl(fd, VIDIOC_QUERYCAP, &cap))
{
if (EINVAL == errno)
{
perror(" no V4L2 device");
return -1;
}
else
{
perror("VIDIOC_QUERYCAP");
return -1;
}
}
if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE))
{
perror(" no video capture device");
return -1;
}
struct v4l2_input input;
input.index = 0;
if ( ioctl(fd, VIDIOC_ENUMINPUT, &input) != 0)
{
perror("set input error");
return -1;
}
if ((ioctl(fd, VIDIOC_S_INPUT, &input)) < 0)
{
perror("set s_input error");
return -1;
}
/* CLEAR(cropcap);
cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (0 == xioctl(fd, VIDIOC_CROPCAP, &cropcap))
{
crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
crop.c = cropcap.defrect;
if (-1 == xioctl(fd, VIDIOC_S_CROP, &crop))
{
switch (errno)
{
case EINVAL:
break;
default:
break;
}
}
}*/
//CLEAR (fmt);
// v4l2_format
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == ioctl(fd, VIDIOC_G_FMT, &fmt))
{perror("VIDIOC_G_FMT");return -1;}
printf("Now show the default fmt\n\n");
printf("width=%d\n",fmt.fmt.pix.width);
printf("height=%d\n",fmt.fmt.pix.height);
printf("fmt=%x\n\n",fmt.fmt.pix.pixelformat);
printf("field=%x\n\n",fmt.fmt.pix.field);
printf("Now set fmt to 800*600-BGR32\n\n");
fmt.fmt.pix.width = 1280;
fmt.fmt.pix.height = 960;
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_BGR32;
fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
printf("width=%d\n",fmt.fmt.pix.width);
printf("height=%d\n",fmt.fmt.pix.height);
printf("fmt=%x\n\n",fmt.fmt.pix.pixelformat);
printf("field=%x\n\n",fmt.fmt.pix.field);
if (-1 == ioctl(fd, VIDIOC_S_FMT, &fmt))
perror("VIDIOC_S_FMT");
if (-1 == ioctl(fd, VIDIOC_G_FMT, &fmt))
{perror("VIDIOC_G_FMT");return -1;}
printf("Now see what have been changed \n\n");
printf("width=%d\n",fmt.fmt.pix.width);
printf("height=%d\n",fmt.fmt.pix.height);
printf("fmt=%x\n\n",fmt.fmt.pix.pixelformat);
printf("field=%x\n\n",fmt.fmt.pix.field);
cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (0 == ioctl(fd, VIDIOC_CROPCAP, &cropcap))
{
//crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
printf("defrect:w=%d,h=%d\n", cropcap.defrect.width,cropcap.defrect.height);
printf("bounds:w=%d,h=%d\n", cropcap.bounds.width,cropcap.bounds.height);
crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
crop.c.height= cropcap.defrect.height/2; /* reset to default */
crop.c.width= cropcap.defrect.width/2;
}
crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
//if (-1 == ioctl(fd, VIDIOC_G_CROP, &crop))
// perror("VIDIOC_G_CROP");
//else printf("crop.c.height=%d width=%d",crop.c.height,crop.c.width);
if (-1 == ioctl(fd, VIDIOC_S_CROP, &crop))
perror("VIDIOC_S_CROP");
else printf("crop.c.height=%d width=%d",crop.c.height,crop.c.width);
//mmapInit();
//captureStart();
deviceUninit();
}
int main(int argc, char **argv)
{
for (;;) {
int index, c = 0;
c = getopt_long(argc, argv, short_options, long_options, &index);
if (-1 == c)
break;
switch (c) {
case 0: /* getopt_long() flag */
break;
case 'd':
deviceName = optarg;
break;
case 'h':
// print help
usage(stdout, argc, argv);
exit(EXIT_SUCCESS);
case 'o':
// set jpeg filename
jpegFilename = optarg;
break;
case 'q':
// set jpeg quality
jpegQuality = atoi(optarg);
break;
case 'm':
#ifdef IO_MMAP
io = IO_METHOD_MMAP;
#else
fprintf(stderr, "You didn't compile for mmap support.\n");
exit(EXIT_FAILURE);
#endif
break;
case 'r':
#ifdef IO_READ
io = IO_METHOD_READ;
#else
fprintf(stderr, "You didn't compile for read support.\n");
exit(EXIT_FAILURE);
#endif
break;
case 'u':
#ifdef IO_USERPTR
io = IO_METHOD_USERPTR;
#else
fprintf(stderr, "You didn't compile for userptr support.\n");
exit(EXIT_FAILURE);
#endif
break;
case 'W':
// set width
width = atoi(optarg);
break;
case 'H':
// set height
height = atoi(optarg);
break;
case 'I':
// set fps
fps = atoi(optarg);
break;
case 'v':
printf("Version: %s\n", VERSION);
exit(EXIT_SUCCESS);
break;
default:
usage(stderr, argc, argv);
exit(EXIT_FAILURE);
}
}
// check for need parameters
if (!jpegFilename) {
fprintf(stderr, "You have to specify JPEG output filename!\n\n");
usage(stdout, argc, argv);
exit(EXIT_FAILURE);
}
// open and initialize device
deviceOpen();
deviceInit();
// start capturing
captureStart();
// process frames
mainLoop();
// stop capturing
captureStop();
// close device
deviceUninit();
deviceClose();
exit(EXIT_SUCCESS);
return 0;
}
