HD=B_0x0, HA=B_0x0, QT=B_0x0
JPEG codec configuration register 4
| HD | Huffman DC Selects the Huffman table for encoding DC coefficients. 0 (B_0x0): Huffman DC table 0 1 (B_0x1): Huffman DC table 1 |
| HA | Huffman AC Selects the Huffman table for encoding AC coefficients. 0 (B_0x0): Huffman AC table 0 1 (B_0x1): Huffman AC table 1 |
| QT | Quantization table Selects quantization table used for component 0. 0 (B_0x0): Quantization table 0 1 (B_0x1): Quantization table 1 2 (B_0x2): Quantization table 2 3 (B_0x3): Quantization table 3 |
| NB | Number of blocks Number of data units minus 1 that belong to a particular color in the MCU. |
| VSF | Vertical sampling factor Vertical sampling factor for component 0. |
| HSF | Horizontal sampling factor Horizontal sampling factor for component 0. |