Texas Instruments OMAP35 Series User Manual page 186

particular standard. In this case, the decoder driver auto detect function is
disabled. Auto detect can be enabled again only by closing and re-opening the
driver.
Example:
v4l2_std_id std = V4L2_STD_NTSC;
ret = ioctl(fd, VIDIOC_S_STD, &std);
if (ret < 0) {
}
while(1) {
}
9.3.2.10. Get Standard
This IOCTL is used to get the current standard in the current decoder.
Ioctl: VIDIOC_G_STD
It takes a pointer to v4l2_std_id instance as an output argument.
Standard IDs are defined in the V4L2 header files
Example:
v4l2_std_id std;
ret = ioctl(fd, VIDIOC_G_STD, &std);
if (ret < 0) {
}
while(1) {
164
perror("S_STD\n");
close(fd);
return -1;
standard.index = i;
ret = ioctl(fd, VIDIOC_ENUMSTD, &standard);
if (ret < 0)
break;
if (standard.std & std) {
printf("%s standard is selected\n");
break;
}
i++;
perror("G_STD\n");
close(fd);
return -1;
standard.index = i;
ret = ioctl(fd, VIDIOC_ENUMSTD, &standard);
if (ret < 0)
Platform Support Products
Capture Driver
Software Design Interfaces
Version 02.01.01.08