[2]<byte; =[0xff, 0xd8]>(name="start marker"; id="SOI")
while (1) {
[2]<byte; :marker>
if (marker == [0xff, 0xe0]) {
[1]<uint16; data_len>(name="payload length"; endian="big")
[data_len - 2]<byte>
continue;
}(name="app0")
if (marker == [0xff, 0xdb]) {
[1]<uint16; data_len>(name="payload length"; endian="big")
[data_len - 2]<byte>
continue;
}(name="Define Quantization Table")
if (marker == [0xff, 0xc0]) {
[1]<uint16; data_len>(name="payload length"; endian="big")
[data_len - 2]<byte>
continue;
}(name="Baseline JPEG"; class="start_of_frame")
if (marker == [0xff, 0xc1]) {
[1]<uint16; data_len>(name="payload length"; endian="big")
[data_len - 2]<byte>
continue;
}(name="Extended Sequential"; class="start_of_frame")
if (marker == [0xff, 0xc2]) {
[1]<uint16; data_len>(name="payload length"; endian="big")
[data_len - 2]<byte>
continue;
}(name="Progressive JPEG"; class="start_of_frame")
if (marker == [0xff, 0xc4]) {
[1]<uint16; data_len>(name="payload length"; endian="big")
[data_len - 2]<byte>
continue;
}(name="Define Huffman Table")
if (marker == [0xff, 0xdd]) {
[1]<uint16; data_len>(name="payload length"; endian="big")
[data_len - 2]<byte>
continue;
}(name="Define Restart Interval")
if (marker == [0xff, 0xda]) {
[1]<uint16; data_len>(name="payload length"; endian="big")
[data_len - 2]<byte>
break;
}(name="Start of Scan")
}
[+]<byte>(name="Entropy-coded scan data";
note="all 0xff bytes in original are stored as 0xff 0x00")
[*]{
[2]<byte; [0]=0xff; [1]=(0xd0, 0xd7)>(name="marker")
[+]<byte>(note="all 0xff bytes in original are stored as 0xff 0x00")
}(name="Restart Markers")
[2]<byte; =[0xff, 0xd9]>(name="end marker"; id="EOI")
