138 lines
3.1 KiB
Go
138 lines
3.1 KiB
Go
package exif
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import (
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"log"
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"regexp"
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"strconv"
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"time"
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"github.com/kjeldgaard/go-exiftool"
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"github.com/photoview/photoview/api/graphql/models"
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)
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type externalExifParser struct{}
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func (p *externalExifParser) ParseExif(media *models.Media) (returnExif *models.MediaEXIF, returnErr error) {
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// Init ExifTool
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extraInitArgs := []string{"-n"}
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et, err := exiftool.NewExiftool(exiftool.AddInitArgs(extraInitArgs))
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if err != nil {
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log.Printf("Error initializing ExifTool: %s\n", err)
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return nil, err
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}
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defer et.Close()
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fileInfos := et.ExtractMetadata(media.Path)
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newExif := models.MediaEXIF{}
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for _, fileInfo := range fileInfos {
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if fileInfo.Err != nil {
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log.Printf("Fileinfo error\n")
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continue
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}
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// Get camera model
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model, err := fileInfo.GetString("Model")
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if err == nil {
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log.Printf("Camera model: %v", model)
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newExif.Camera = &model
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}
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// Get Camera make
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make, err := fileInfo.GetString("Make")
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if err == nil {
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log.Printf("Camera make: %v", make)
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newExif.Maker = &make
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}
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// Get lens
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lens, err := fileInfo.GetString("LensModel")
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if err == nil {
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log.Printf("Lens: %v", lens)
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newExif.Lens = &lens
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}
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//Get time of photo
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date, err := fileInfo.GetString("DateTimeOriginal")
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if err == nil {
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log.Printf("Date shot: %s", date)
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layout := "2006:01:02 15:04:05"
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dateTime, err := time.Parse(layout, date)
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if err == nil {
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newExif.DateShot = &dateTime
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}
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}
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// Get exposure time
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exposureTime, err := fileInfo.GetString("ExposureTime")
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if err == nil {
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log.Printf("Exposure time: %s", exposureTime)
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newExif.Exposure = &exposureTime
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}
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// Get aperture
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aperture, err := fileInfo.GetFloat("Aperture")
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if err == nil {
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log.Printf("Aperture: %f", aperture)
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newExif.Aperture = &aperture
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}
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// Get ISO
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iso, err := fileInfo.GetInt("ISO")
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if err == nil {
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log.Printf("ISO: %d", iso)
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newExif.Iso = &iso
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}
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// Get focal length
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focalLen, err := fileInfo.GetString("FocalLength")
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if err == nil {
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log.Printf("Focal length: %s", focalLen)
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reg, _ := regexp.Compile("[0-9.]+")
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focalLenStr := reg.FindString(focalLen)
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focalLenFloat, err := strconv.ParseFloat(focalLenStr, 64)
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if err == nil {
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newExif.FocalLength = &focalLenFloat
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}
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}
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// Get flash info
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flash, err := fileInfo.GetInt("Flash")
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if err == nil {
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log.Printf("Flash: %d", flash)
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newExif.Flash = &flash
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}
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// Get orientation
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orientation, err := fileInfo.GetInt("Orientation")
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if err == nil {
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log.Printf("Orientation: %d", orientation)
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newExif.Orientation = &orientation
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}
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// Get exposure program
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expProgram, err := fileInfo.GetInt("ExposureProgram")
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if err == nil {
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log.Printf("Exposure Program: %d", expProgram)
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newExif.ExposureProgram = &expProgram
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}
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// GPS coordinates - longitude
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longitudeRaw, err := fileInfo.GetFloat("GPSLongitude")
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if err == nil {
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log.Printf("GPS longitude: %f", longitudeRaw)
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newExif.GPSLongitude = &longitudeRaw
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}
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// GPS coordinates - latitude
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latitudeRaw, err := fileInfo.GetFloat("GPSLatitude")
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if err == nil {
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log.Printf("GPS latitude: %f", latitudeRaw)
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newExif.GPSLatitude = &latitudeRaw
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}
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}
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returnExif = &newExif
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return
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}
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