uvc_v4l2_get_bytesperline
fmt->fmt.pix.bytesperline = uvc_v4l2_get_bytesperline(format, frame);
fmt->fmt.pix.bytesperline = uvc_v4l2_get_bytesperline(format, frame);
if (fmt->fmt.pix.sizeimage != (uvc_v4l2_get_bytesperline(uformat, uframe) *
fmt->fmt.pix.bytesperline = uvc_v4l2_get_bytesperline(uformat, uframe);
unsigned int bpl = uvc_v4l2_get_bytesperline(uformat, uframe);