Webcam Driver — Tedgem

void *buffers[req.count]; struct v4l2_buffer buf; for (int i = 0; i < req.count; ++i) memset(&buf, 0, sizeof(buf)); buf.type = req.type; buf.memory = V4L2_MEMORY_MMAP; buf.index = i; if (ioctl(fd, VIDIOC_QUERYBUF, &buf) < 0) perror("VIDIOC_QUERYBUF"); close(fd); return 1; buffers[i] = mmap(NULL, buf.length, PROT_READ