struct v4l2_requestbuffers req = 0; req.count = 4; req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; req.memory = V4L2_MEMORY_MMAP; if (ioctl(fd, VIDIOC_REQBUFS, &req) < 0) perror("VIDIOC_REQBUFS"); close(fd); return 1;
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