62 // The input coefficients should already have been multiplied by the 63 // appropriate quantization table. We use fixed-point computation, with the 64 // number of bits for the fractional component // Vertical sampling factor. 34 c uint8 // Component identifier. 35 tq uint8 // Quantization table destination selector. 36 } 37 38 type block [blockSize]int 39 40 66 dhtMarker = 0xc4 // Define Huffman Table. 67 dqtMarker = 0xdb // Define Quantization Table. 68 sosMarker = 0xda // Start Of Scan. 69 driMarker = 0xdd // Define Restart