Tedgem Webcam Driver Guide

int main() const char *dev = "/dev/video0"; int fd = open(dev, O_RDWR); if (fd < 0) perror("open"); return 1;

struct v4l2_format fmt = 0; fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; fmt.fmt.pix.width = 640; fmt.fmt.pix.height = 480; fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_MJPEG; fmt.fmt.pix.field = V4L2_FIELD_NONE; if (ioctl(fd, VIDIOC_S_FMT, &fmt) < 0) perror("VIDIOC_S_FMT"); close(fd); return 1; tedgem webcam driver

enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE; ioctl(fd, VIDIOC_STREAMON, &type); memset(&buf, 0, sizeof(buf)); buf.type = req.type; buf.memory = V4L2_MEMORY_MMAP; if (ioctl(fd, VIDIOC_DQBUF, &buf) < 0) perror("VIDIOC_DQBUF"); else FILE *out = fopen("frame.jpg","wb"); fwrite(buffers[buf.index], 1, buf.bytesused, out); fclose(out); ioctl(fd, VIDIOC_QBUF, &buf); ioctl(fd, VIDIOC_STREAMOFF, &type); for (int i=0;i<req.count;++i) munmap(buffers[i], buf.length); close(fd); return 0; int main() const char *dev = "/dev/video0"; int