Programming Guide
161
Start capturing
void start_capturing (void)
{
unsigned int i;
enum v4l2_buf_type type;
for (i = 0; i < n_buffers; ++i) {
struct v4l2_buffer buf;
memset (&buf, 0, sizeof (buf));
buf.type =
V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = i;
if (-1 == ioctl (fd, VIDIOC_QBUF,
&buf))
exit (EXIT_FAILURE);
}
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == ioctl (fd, VIDIOC_STREAMON,
&type))
exit (EXIT_FAILURE);
}
Stop capturing
Void stop_capturing (void)
{
enum v4l2_buf_type type;
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == ioctl (fd, VIDIOC_STREAMOFF,
&type));
}
Summary of Contents for cRTV-24
Page 4: ......
Page 8: ...List of Tables iv Table 5 2 C C Data Types 83 Table 5 3 Pixel Data 122 ...
Page 10: ......
Page 18: ...8 Introduction ...
Page 34: ...24 Hardware Reference Figure 2 8 STRG Address Jumpers ...
Page 55: ...Installation Guide 45 Figure 3 2 cRTV 24 3U cPCI ...
Page 61: ...Installation Guide 51 ...
Page 62: ...52 Installation Guide ...
Page 64: ...54 Installation Guide The Device Manager should be as follows ...
Page 67: ...Installation Guide 57 ...
Page 68: ...58 Installation Guide 3 When the following window appears please click Con tinue Anyway ...
Page 70: ...60 Installation Guide The Device Manager should be as follows ...
Page 72: ...62 Installation Guide 3 Click the Finish button to finish the installation ...
Page 76: ...66 Installation Guide ...
Page 144: ...134 Function Library ...
Page 174: ...164 Programming Guide ...