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package jpegstructure
import (
"github.com/dsoprea/go-logging"
)
const (
// MARKER_SOI marker
MARKER_SOI = 0xd8
// MARKER_EOI marker
MARKER_EOI = 0xd9
// MARKER_SOS marker
MARKER_SOS = 0xda
// MARKER_SOD marker
MARKER_SOD = 0x93
// MARKER_DQT marker
MARKER_DQT = 0xdb
// MARKER_APP0 marker
MARKER_APP0 = 0xe0
// MARKER_APP1 marker
MARKER_APP1 = 0xe1
// MARKER_APP2 marker
MARKER_APP2 = 0xe2
// MARKER_APP3 marker
MARKER_APP3 = 0xe3
// MARKER_APP4 marker
MARKER_APP4 = 0xe4
// MARKER_APP5 marker
MARKER_APP5 = 0xe5
// MARKER_APP6 marker
MARKER_APP6 = 0xe6
// MARKER_APP7 marker
MARKER_APP7 = 0xe7
// MARKER_APP8 marker
MARKER_APP8 = 0xe8
// MARKER_APP10 marker
MARKER_APP10 = 0xea
// MARKER_APP12 marker
MARKER_APP12 = 0xec
// MARKER_APP13 marker
MARKER_APP13 = 0xed
// MARKER_APP14 marker
MARKER_APP14 = 0xee
// MARKER_APP15 marker
MARKER_APP15 = 0xef
// MARKER_COM marker
MARKER_COM = 0xfe
// MARKER_CME marker
MARKER_CME = 0x64
// MARKER_SIZ marker
MARKER_SIZ = 0x51
// MARKER_DHT marker
MARKER_DHT = 0xc4
// MARKER_JPG marker
MARKER_JPG = 0xc8
// MARKER_DAC marker
MARKER_DAC = 0xcc
// MARKER_SOF0 marker
MARKER_SOF0 = 0xc0
// MARKER_SOF1 marker
MARKER_SOF1 = 0xc1
// MARKER_SOF2 marker
MARKER_SOF2 = 0xc2
// MARKER_SOF3 marker
MARKER_SOF3 = 0xc3
// MARKER_SOF5 marker
MARKER_SOF5 = 0xc5
// MARKER_SOF6 marker
MARKER_SOF6 = 0xc6
// MARKER_SOF7 marker
MARKER_SOF7 = 0xc7
// MARKER_SOF9 marker
MARKER_SOF9 = 0xc9
// MARKER_SOF10 marker
MARKER_SOF10 = 0xca
// MARKER_SOF11 marker
MARKER_SOF11 = 0xcb
// MARKER_SOF13 marker
MARKER_SOF13 = 0xcd
// MARKER_SOF14 marker
MARKER_SOF14 = 0xce
// MARKER_SOF15 marker
MARKER_SOF15 = 0xcf
)
var (
jpegLogger = log.NewLogger("jpegstructure.jpeg")
jpegMagicStandard = []byte{0xff, MARKER_SOI, 0xff}
jpegMagic2000 = []byte{0xff, 0x4f, 0xff}
markerLen = map[byte]int{
0x00: 0,
0x01: 0,
0xd0: 0,
0xd1: 0,
0xd2: 0,
0xd3: 0,
0xd4: 0,
0xd5: 0,
0xd6: 0,
0xd7: 0,
0xd8: 0,
0xd9: 0,
0xda: 0,
// J2C
0x30: 0,
0x31: 0,
0x32: 0,
0x33: 0,
0x34: 0,
0x35: 0,
0x36: 0,
0x37: 0,
0x38: 0,
0x39: 0,
0x3a: 0,
0x3b: 0,
0x3c: 0,
0x3d: 0,
0x3e: 0,
0x3f: 0,
0x4f: 0,
0x92: 0,
0x93: 0,
// J2C extensions
0x74: 4,
0x75: 4,
0x77: 4,
}
markerNames = map[byte]string{
MARKER_SOI: "SOI",
MARKER_EOI: "EOI",
MARKER_SOS: "SOS",
MARKER_SOD: "SOD",
MARKER_DQT: "DQT",
MARKER_APP0: "APP0",
MARKER_APP1: "APP1",
MARKER_APP2: "APP2",
MARKER_APP3: "APP3",
MARKER_APP4: "APP4",
MARKER_APP5: "APP5",
MARKER_APP6: "APP6",
MARKER_APP7: "APP7",
MARKER_APP8: "APP8",
MARKER_APP10: "APP10",
MARKER_APP12: "APP12",
MARKER_APP13: "APP13",
MARKER_APP14: "APP14",
MARKER_APP15: "APP15",
MARKER_COM: "COM",
MARKER_CME: "CME",
MARKER_SIZ: "SIZ",
MARKER_DHT: "DHT",
MARKER_JPG: "JPG",
MARKER_DAC: "DAC",
MARKER_SOF0: "SOF0",
MARKER_SOF1: "SOF1",
MARKER_SOF2: "SOF2",
MARKER_SOF3: "SOF3",
MARKER_SOF5: "SOF5",
MARKER_SOF6: "SOF6",
MARKER_SOF7: "SOF7",
MARKER_SOF9: "SOF9",
MARKER_SOF10: "SOF10",
MARKER_SOF11: "SOF11",
MARKER_SOF13: "SOF13",
MARKER_SOF14: "SOF14",
MARKER_SOF15: "SOF15",
}
)
|
