95 lines
2 KiB
Go
95 lines
2 KiB
Go
package meta
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import (
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"fmt"
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"os"
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"time"
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"gopkg.in/ugjka/go-tz.v2/tz"
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_ "trimmer.io/go-xmp/models"
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model "trimmer.io/go-xmp/models/exif"
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"trimmer.io/go-xmp/xmp"
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)
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// Exif returns parses an XMP and returns its data.
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func XMP(filename string) (data Data, err error) {
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defer func() {
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if e := recover(); e != nil {
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data = Data{}
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err = fmt.Errorf("meta: %s", e)
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}
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}()
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data.Xmp = xmp.NewDocument()
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data.Exif = &model.ExifInfo{}
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data.ExifEX = &model.ExifEXInfo{}
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data.ExifAux = &model.ExifAuxInfo{}
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f, err := os.Open(filename)
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if err != nil {
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return data, err
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}
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defer f.Close()
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dec := xmp.NewDecoder(f)
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if err := dec.Decode(data.Xmp); err != nil {
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return data, err
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}
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if err := data.Exif.SyncFromXMP(data.Xmp); err != nil {
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return data, err
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}
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if err := data.ExifEX.SyncFromXMP(data.Xmp); err != nil {
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return data, err
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}
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if err := data.ExifAux.SyncFromXMP(data.Xmp); err != nil {
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return data, err
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}
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data.Artist = data.Exif.Artist
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data.Copyright = data.Exif.Copyright
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data.TakenAtLocal = data.Exif.DateTime.Value()
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data.Description = data.Exif.ImageDescription
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data.Height = data.Exif.ImageLength
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data.Width = data.Exif.ImageWidth
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data.CameraMake = data.Exif.Make
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data.CameraModel = data.Exif.Model
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data.LensModel = data.ExifAux.Lens
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data.Orientation = int(data.Exif.Orientation)
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data.Lat = 0 //data.Exif.GPSLatitudeCoord.Value()
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data.Lng = 0 //data.Exif.GPSLongitudeCoord.Value()
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data.Altitude = int(data.Exif.GPSAltitude.Value())
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data.TimeZone = "UTC"
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if data.Lat != 0 && data.Lng != 0 {
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if zones, err := tz.GetZone(tz.Point{
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Lat: data.Lat,
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Lon: data.Lng,
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}); err == nil {
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data.TimeZone = zones[0]
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}
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}
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loc, err := time.LoadLocation(data.TimeZone)
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if err != nil {
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data.TakenAt = data.TakenAtLocal
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log.Warnf("meta: no location for timezone (%s)", err.Error())
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} else {
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data.TakenAtLocal.In(loc)
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data.TakenAt = data.TakenAtLocal.UTC()
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}
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return data, nil
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}
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// TODO: Needs to be implemented
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func (d *Data) SaveAsXMP(filename string) error {
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return nil
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}
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