Fields
- id: s32
- h: s32
- v: s32
- quant_id: s32
- width: s32
- Size in samples, and in blocks for a scan that holds this component alone.
- height: s32
- blocks_w: s32
- blocks_h: s32
- alloc_w: s32
- Blocks allocated per row and per column, rounded up to whole MCUs.
- alloc_h: s32
- stride: s64
- plane: *u8
- coefs: *s16
- pred: s32
- quant_taken: bool
- quant: [64] s32
- dequantizers in zigzag order
- quant_natural: [64] s32