Fields
- data: *u8
- end: s64
- pos: s64
- bits: u64
- Entropy-coded segment reader.
- nbits: s64
- pad: s64
- marker: u8
- eobrun: s32
- width: s32
- height: s32
- ncomp: s32
- hmax: s32
- vmax: s32
- mcus_x: s32
- mcus_y: s32
- progressive: bool
- frame_seen: bool
- scans: s32
- restart_interval: s32
- adobe_transform: s32
- adobe_seen: bool
- jfif_seen: bool
- comps: [4] Jpeg_Component
- quant_defined: [4] bool
- quant_tables: [4][64] s32
- dc_tables: [4] Jpeg_Huffman
- ac_tables: [4] Jpeg_Huffman
- block: [64] s32