/
canon.go
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/
canon.go
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package mknote
import (
"fmt"
"github.com/evanoberholster/exiftools/exif"
"github.com/evanoberholster/exiftools/mknote/canontags"
"github.com/evanoberholster/exiftools/models"
"github.com/evanoberholster/exiftools/tiff"
)
// Canon-specific fields
var (
CanonCameraSettings exif.FieldName = "Canon.CameraSettings" // A sub-IFD
CanonShotInfo exif.FieldName = "Canon.ShotInfo" // A sub-IFD
CanonAFInfo exif.FieldName = "Canon.AFInfo"
CanonTimeInfo exif.FieldName = "Canon.TimeInfo"
CanonFileInfo exif.FieldName = "Canon.FileInfo"
CanonImageType exif.FieldName = "Canon.ImageType"
CanonPreviewImageInfo exif.FieldName = "Canon.PreviewImageInfo"
CanonSerialNumber exif.FieldName = "Canon.SerialNumber"
Canon0x0000 exif.FieldName = "Canon.0x0000"
Canon0x0003 exif.FieldName = "Canon.0x0003"
Canon0x00b5 exif.FieldName = "Canon.0x00b5"
Canon0x00c0 exif.FieldName = "Canon.0x00c0"
Canon0x00c1 exif.FieldName = "Canon.0x00c1"
)
var makerNoteCanonFields = map[uint16]exif.FieldName{
0x0000: Canon0x0000,
0x0001: CanonCameraSettings,
0x0002: exif.FocalLength,
0x0003: Canon0x0003,
0x0004: CanonShotInfo,
0x0005: Panorama,
0x0006: CanonImageType,
0x0007: FirmwareVersion,
0x0008: FileNumber,
0x0009: OwnerName,
0x000c: CanonSerialNumber,
0x000d: CameraInfo,
0x000f: CustomFunctions,
0x0010: ModelID,
0x0012: PictureInfo,
0x0013: ThumbnailImageValidArea,
0x0015: SerialNumberFormat,
0x001a: SuperMacro,
0x0026: CanonAFInfo,
0x0035: CanonTimeInfo,
0x0083: OriginalDecisionDataOffset,
0x00a4: WhiteBalanceTable,
0x0093: CanonFileInfo,
0x0095: LensModel,
0x0096: InternalSerialNumber,
0x0097: DustRemovalData,
0x0099: CustomFunctions,
0x00a0: ProcessingInfo,
0x00aa: MeasuredColor,
0x00b4: exif.ColorSpace,
0x00b5: Canon0x00b5,
0x00b6: CanonPreviewImageInfo,
0x00c0: Canon0x00c0,
0x00c1: Canon0x00c1,
0x00d0: VRDOffset,
0x00e0: SensorInfo,
0x4001: ColorData,
}
// CanonRaw - Raw Image from a Canon Camera
type CanonRaw struct {
ModelID string
SerialNumber string
ImageType string
Timezone string
CanonShotInfo canontags.CanonShotInfo `json:"CanonShotInfo"`
CanonCameraSettings CameraSettings
CanonAFInfo canontags.CanonAFInfo
}
// Get CanonRaw from exif
func (cr *CanonRaw) Get(x *exif.Exif) error {
if err := cr.canonCameraSettings(x); err != nil {
return err
}
if err := cr.canonShotInfo(x); err != nil {
return err
}
if err := cr.canonAFInfo(x); err != nil {
return err
}
cr.imageType(x)
cr.modelID(x)
cr.timezone(x)
return nil
}
// CanonCameraSettings - Get Canon camera Settings from MakerNote
func (cr *CanonRaw) canonCameraSettings(x *exif.Exif) error {
tag, err := x.Get(CanonCameraSettings)
if err != nil {
return err
}
cr.CanonCameraSettings.ContinuousDrive = processCameraSettingsMap(tag, CanonContinuousDrive)
cr.CanonCameraSettings.RecordMode = processCameraSettingsMap(tag, CanonRecordMode)
cr.CanonCameraSettings.FocusMode = processCameraSettingsMap(tag, CanonFocusMode)
cr.CanonCameraSettings.ExposureMode = processCameraSettingsMap(tag, CanonExposureMode)
cr.CanonCameraSettings.MeteringMode = processCameraSettingsMap(tag, CanonMeteringMode)
cr.CanonCameraSettings.Lens = cameraSettingsLensType(tag)
// AFPoint
// Flash Activity
// AESetting
// ImageStabilization
// SpotMeteringMode
// RecordMode
// CanonFlashMode
return nil
}
func processCameraSettingsMap(tag *tiff.Tag, i int) string {
a, err := tag.Int(i)
if err != nil {
return ""
}
return CanonCameraSettingsFields[i][a]
}
// ModelID - Get Canon Model ID from MakerNote
func (cr *CanonRaw) modelID(x *exif.Exif) error {
tag, err := x.Get(ModelID)
if err != nil {
return canontags.ErrMakerNote
}
i, _ := tag.Int(0)
m, err := canontags.CanonModel(uint32(i))
if err != nil {
return err
}
cr.ModelID = string(m)
return nil
}
// ImageType - Get Canon Image Type from MakerNote
func (cr *CanonRaw) imageType(x *exif.Exif) error {
tag, err := x.Get(CanonImageType)
if err != nil {
return canontags.ErrMakerNote
}
cr.ImageType, err = tag.StringVal()
return err
}
// FileNumber - File Number
// WIP
func (cr *CanonRaw) fileNumber(x *exif.Exif) {
}
func (cr *CanonRaw) canonAFInfo(x *exif.Exif) error {
tag, err := x.Get(CanonAFInfo)
if err != nil {
return err
}
return cr.CanonAFInfo.Get(tag)
}
func (cr *CanonRaw) canonShotInfo(x *exif.Exif) error {
tag, err := x.Get(CanonShotInfo)
if err != nil {
return err
}
return cr.CanonShotInfo.Get(tag)
}
func cameraSettingsLensType(tag *tiff.Tag) string {
a, err := tag.Int(CanonLensType)
if err != nil {
return ""
}
return canontags.CanonLens(a)
}
// Canon Exif information constants
const (
CanonContinuousDrive int = 5
CanonFocusMode int = 7
CanonRecordMode int = 9
CanonMeteringMode int = 17
CanonExposureMode int = 20
CanonLensType int = 22
CanonAESetting int = 33
)
// CanonCameraSettingsFields -
var CanonCameraSettingsFields = map[int]CameraSettingsField{
CanonContinuousDrive: models.CanonContinuousDriveValues,
CanonFocusMode: models.CanonFocusModeValues,
CanonRecordMode: models.CanonRecordModeValues,
CanonMeteringMode: models.CanonMeteringModeValues,
CanonExposureMode: models.CanonExposureModeValues,
CanonAESetting: models.CanonAESettingValues,
}
// canonMakerNoteTimezones - Canon MakerNote Timezones
var canonMakerNoteTimezones = map[int]string{
0: "+00:00",
1: "+12:45",
2: "+12:00",
3: "+11:00",
4: "+10:00",
5: "+9:30",
6: "+9:00",
7: "+8:00",
8: "+7:00",
9: "+6:30",
10: "+6:00",
11: "+5:45",
12: "+5:30",
13: "+5:00",
14: "+4:30",
15: "+4:00",
16: "+3:30",
17: "+3:00",
18: "+2:00",
19: "+1:00",
20: "+0:00",
21: "-1:00",
22: "-2:00",
23: "-3:00",
24: "-3:30",
25: "-4:00",
26: "-4:00",
27: "-5:00",
28: "-6:00",
29: "-7:00",
30: "-8:00",
31: "-9:00",
32: "-10:00",
33: "-11:00",
32766: "+00:00",
}
// canonMakerNoteTimezoneValues - Canon MakerNote Timezone values
var canonMakerNoteTimezoneValues = map[int]string{
0: "n/a",
1: "Chatham Islands",
2: "Wellington",
3: "Solomon Islands",
4: "Sydney",
5: "Adelaide",
6: "Tokyo",
7: "Hong Kong",
8: "Bangkok",
9: "Yangon",
10: "Dhaka",
11: "Kathmandu",
12: "Delhi",
13: "Karachi",
14: "Kabul",
15: "Dubai",
16: "Tehran",
17: "Moscow",
18: "Cairo",
19: "Paris",
20: "London",
21: "Azores",
22: "Fernando de Noronha",
23: "Sao Paulo",
24: "Newfoundland",
25: "Santiago",
26: "Caracas",
27: "New York",
28: "Chicago",
29: "Denver",
30: "Los Angeles",
31: "Anchorage",
32: "Honolulu",
33: "Samoa",
32766: "(not set)",
}
// Timezone - Get Timezone information from MakerNote
func (cr *CanonRaw) timezone(x *exif.Exif) error {
tag, err := x.Get(CanonTimeInfo)
if err != nil {
return canontags.ErrMakerNote
}
tz, err := tag.Int(2)
if err != nil {
return canontags.ErrMakerNote
}
//dst, _ := ti.Int(3)
cr.Timezone = canonMakerNoteTimezones[tz]
fmt.Println("Timezones", tag)
return nil
}