280 lines
7.8 KiB
Go
280 lines
7.8 KiB
Go
package meta
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import (
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"fmt"
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"path/filepath"
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"reflect"
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"runtime/debug"
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"strconv"
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"strings"
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"time"
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"github.com/photoprism/photoprism/pkg/rnd"
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"github.com/photoprism/photoprism/pkg/txt"
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"github.com/tidwall/gjson"
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"gopkg.in/photoprism/go-tz.v2/tz"
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)
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const MimeVideoMP4 = "video/mp4"
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const MimeQuicktime = "video/quicktime"
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// Exiftool parses JSON sidecar data as created by Exiftool.
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func (data *Data) Exiftool(jsonData []byte, originalName string) (err error) {
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defer func() {
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if e := recover(); e != nil {
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err = fmt.Errorf("metadata: %s (exiftool panic)\nstack: %s", e, debug.Stack())
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}
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}()
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j := gjson.GetBytes(jsonData, "@flatten|@join")
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if !j.IsObject() {
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return fmt.Errorf("metadata: data is not an object in %s (exiftool)", txt.Quote(filepath.Base(originalName)))
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}
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jsonStrings := make(map[string]string)
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jsonValues := j.Map()
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for key, val := range jsonValues {
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jsonStrings[key] = val.String()
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}
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if fileName, ok := jsonStrings["FileName"]; ok && fileName != "" && originalName != "" && fileName != originalName {
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return fmt.Errorf("metadata: original name %s does not match %s (exiftool)", txt.Quote(originalName), txt.Quote(fileName))
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}
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v := reflect.ValueOf(data).Elem()
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// Iterate through all config fields
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for i := 0; i < v.NumField(); i++ {
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fieldValue := v.Field(i)
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tagData := v.Type().Field(i).Tag.Get("meta")
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// Automatically assign values to fields with "flag" tag
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if tagData != "" {
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tagValues := strings.Split(tagData, ",")
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var jsonValue gjson.Result
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var tagValue string
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for _, tagValue = range tagValues {
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if r, ok := jsonValues[tagValue]; !ok {
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continue
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} else {
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jsonValue = r
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break
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}
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}
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// Skip empty values.
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if !jsonValue.Exists() {
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continue
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}
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switch t := fieldValue.Interface().(type) {
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case time.Time:
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if !fieldValue.IsZero() {
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continue
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}
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s := strings.TrimSpace(jsonValue.String())
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s = strings.ReplaceAll(s, "/", ":")
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if tv, err := time.Parse("2006:01:02 15:04:05", strings.ReplaceAll(s, "-", ":")); err == nil {
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fieldValue.Set(reflect.ValueOf(tv.Round(time.Second).UTC()))
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} else if tv, err := time.Parse("2006:01:02 15:04:05-07:00", s); err == nil {
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fieldValue.Set(reflect.ValueOf(tv.Round(time.Second)))
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}
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case time.Duration:
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if !fieldValue.IsZero() {
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continue
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}
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fieldValue.Set(reflect.ValueOf(StringToDuration(jsonValue.String())))
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case int, int64:
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if !fieldValue.IsZero() {
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continue
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}
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fieldValue.SetInt(jsonValue.Int())
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case float32, float64:
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if !fieldValue.IsZero() {
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continue
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}
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fieldValue.SetFloat(jsonValue.Float())
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case uint, uint64:
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if !fieldValue.IsZero() {
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continue
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}
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fieldValue.SetUint(jsonValue.Uint())
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case []string:
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existing := fieldValue.Interface().([]string)
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fieldValue.Set(reflect.ValueOf(txt.AddToWords(existing, strings.TrimSpace(jsonValue.String()))))
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case Keywords:
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existing := fieldValue.Interface().(Keywords)
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fieldValue.Set(reflect.ValueOf(txt.AddToWords(existing, strings.TrimSpace(jsonValue.String()))))
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case string:
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if !fieldValue.IsZero() {
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continue
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}
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fieldValue.SetString(strings.TrimSpace(jsonValue.String()))
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case bool:
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if !fieldValue.IsZero() {
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continue
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}
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fieldValue.SetBool(jsonValue.Bool())
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default:
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log.Warnf("metadata: can't assign value of type %s to %s (exiftool)", t, tagValue)
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}
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}
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}
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// Set latitude and longitude if known and not already set.
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if data.Lat == 0 && data.Lng == 0 {
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if data.GPSPosition != "" {
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data.Lat, data.Lng = GpsToLatLng(data.GPSPosition)
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} else if data.GPSLatitude != "" && data.GPSLongitude != "" {
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data.Lat = GpsToDecimal(data.GPSLatitude)
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data.Lng = GpsToDecimal(data.GPSLongitude)
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}
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}
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if data.Altitude == 0 {
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// Parseable floating point number?
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if fl := GpsFloatRegexp.FindAllString(jsonStrings["GPSAltitude"], -1); len(fl) != 1 {
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// Ignore.
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} else if alt, err := strconv.ParseFloat(fl[0], 64); err == nil && alt != 0 {
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data.Altitude = int(alt)
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}
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}
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hasTimeOffset := false
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if _, offset := data.TakenAtLocal.Zone(); offset != 0 && !data.TakenAtLocal.IsZero() {
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hasTimeOffset = true
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} else if mt, ok := jsonStrings["MIMEType"]; ok && (mt == MimeVideoMP4 || mt == MimeQuicktime) {
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// Assume default time zone for MP4 & Quicktime videos is UTC.
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// see https://exiftool.org/TagNames/QuickTime.html
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data.TimeZone = time.UTC.String()
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data.TakenAt = data.TakenAt.UTC()
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data.TakenAtLocal = time.Time{}
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}
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// Set time zone and calculate UTC time.
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if data.Lat != 0 && data.Lng != 0 {
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zones, err := tz.GetZone(tz.Point{
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Lat: float64(data.Lat),
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Lon: float64(data.Lng),
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})
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if err == nil && len(zones) > 0 {
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data.TimeZone = zones[0]
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}
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if loc, err := time.LoadLocation(data.TimeZone); err != nil {
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log.Warnf("metadata: unknown time zone %s (exiftool)", data.TimeZone)
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} else if !data.TakenAtLocal.IsZero() {
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if tl, err := time.ParseInLocation("2006:01:02 15:04:05", data.TakenAtLocal.Format("2006:01:02 15:04:05"), loc); err == nil {
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if localUtc, err := time.ParseInLocation("2006:01:02 15:04:05", data.TakenAtLocal.Format("2006:01:02 15:04:05"), time.UTC); err == nil {
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data.TakenAtLocal = localUtc
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}
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data.TakenAt = tl.Round(time.Second).UTC()
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} else {
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log.Errorf("metadata: %s (exiftool)", err.Error()) // this should never happen
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}
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} else if !data.TakenAt.IsZero() {
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if localUtc, err := time.ParseInLocation("2006:01:02 15:04:05", data.TakenAt.In(loc).Format("2006:01:02 15:04:05"), time.UTC); err == nil {
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data.TakenAtLocal = localUtc
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data.TakenAt = data.TakenAt.UTC()
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} else {
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log.Errorf("metadata: %s (exiftool)", err.Error()) // this should never happen
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}
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}
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} else if hasTimeOffset {
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if localUtc, err := time.ParseInLocation("2006:01:02 15:04:05", data.TakenAtLocal.Format("2006:01:02 15:04:05"), time.UTC); err == nil {
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data.TakenAtLocal = localUtc
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}
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data.TakenAt = data.TakenAt.Round(time.Second).UTC()
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}
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// Set local time if still empty.
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if data.TakenAtLocal.IsZero() && !data.TakenAt.IsZero() {
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if loc, err := time.LoadLocation(data.TimeZone); data.TimeZone == "" || err != nil {
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data.TakenAtLocal = data.TakenAt
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} else if localUtc, err := time.ParseInLocation("2006:01:02 15:04:05", data.TakenAt.In(loc).Format("2006:01:02 15:04:05"), time.UTC); err == nil {
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data.TakenAtLocal = localUtc
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data.TakenAt = data.TakenAt.UTC()
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} else {
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log.Errorf("metadata: %s (exiftool)", err.Error()) // this should never happen
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}
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}
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if orientation, ok := jsonStrings["Orientation"]; ok && orientation != "" {
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switch orientation {
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case "1", "Horizontal (normal)":
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data.Orientation = 1
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case "2":
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data.Orientation = 2
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case "3", "Rotate 180 CW":
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data.Orientation = 3
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case "4":
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data.Orientation = 4
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case "5":
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data.Orientation = 5
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case "6", "Rotate 90 CW":
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data.Orientation = 6
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case "7":
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data.Orientation = 7
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case "8", "Rotate 270 CW":
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data.Orientation = 8
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}
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}
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if data.Orientation == 0 {
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// Set orientation based on rotation.
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switch data.Rotation {
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case 0:
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data.Orientation = 1
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case -180, 180:
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data.Orientation = 3
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case 90:
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data.Orientation = 6
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case -90, 270:
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data.Orientation = 8
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}
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}
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// Normalize compression information.
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data.Codec = strings.ToLower(data.Codec)
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if strings.Contains(data.Codec, CodecJpeg) {
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data.Codec = CodecJpeg
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}
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// Validate and normalize optional DocumentID.
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if data.DocumentID != "" {
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data.DocumentID = rnd.SanitizeUUID(data.DocumentID)
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}
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// Validate and normalize optional InstanceID.
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if data.InstanceID != "" {
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data.InstanceID = rnd.SanitizeUUID(data.InstanceID)
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}
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if data.Projection == "equirectangular" {
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data.AddKeywords(KeywordPanorama)
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}
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data.Title = SanitizeTitle(data.Title)
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data.Description = SanitizeDescription(data.Description)
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data.Subject = SanitizeMeta(data.Subject)
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data.Artist = SanitizeMeta(data.Artist)
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return nil
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}
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