scan_header
struct v4l2_jpeg_scan_header scan_header;
.scan = &scan_header,
for (i = 0; i < scan_header.num_components; i++) {
scan_component = &scan_header.component[i];
struct v4l2_jpeg_scan_header *scan_header)
if (scan_header) {
scan_header->num_components = ns;
component = &scan_header->component[i];
if ((scan_header(partition) == 0) &&
if (scan_header(part) == 0) {