package meta import ( "math" "time" "github.com/photoprism/photoprism/pkg/s2" "github.com/photoprism/photoprism/pkg/rnd" ) // Data represents image meta data. type Data struct { DocumentID string `meta:"ImageUniqueID,OriginalDocumentID,DocumentID"` InstanceID string `meta:"InstanceID,DocumentID"` TakenAt time.Time `meta:"DateTimeOriginal,CreationDate,CreateDate,MediaCreateDate,ContentCreateDate,DateTimeDigitized,DateTime"` TakenAtLocal time.Time `meta:"DateTimeOriginal,CreationDate,CreateDate,MediaCreateDate,ContentCreateDate,DateTimeDigitized,DateTime"` TimeZone string `meta:"-"` Duration time.Duration `meta:"Duration,MediaDuration,TrackDuration"` Codec string `meta:"CompressorID,Compression,FileType"` Title string `meta:"Title"` Subject string `meta:"Subject,PersonInImage,ObjectName,HierarchicalSubject,CatalogSets"` Keywords string `meta:"Keywords"` Notes string `meta:"-"` Artist string `meta:"Artist,Creator,OwnerName"` Description string `meta:"Description"` Copyright string `meta:"Rights,Copyright"` Projection string `meta:"ProjectionType"` CameraMake string `meta:"CameraMake,Make"` CameraModel string `meta:"CameraModel,Model"` CameraOwner string `meta:"OwnerName"` CameraSerial string `meta:"SerialNumber"` LensMake string `meta:"LensMake"` LensModel string `meta:"Lens,LensModel"` Flash bool `meta:"-"` FocalLength int `meta:"-"` Exposure string `meta:"ExposureTime"` Aperture float32 `meta:"ApertureValue"` FNumber float32 `meta:"FNumber"` Iso int `meta:"ISO"` GPSPosition string `meta:"GPSPosition"` GPSLatitude string `meta:"GPSLatitude"` GPSLongitude string `meta:"GPSLongitude"` Lat float32 `meta:"-"` Lng float32 `meta:"-"` Altitude int `meta:"GlobalAltitude"` Width int `meta:"PixelXDimension,ImageWidth,ExifImageWidth,SourceImageWidth"` Height int `meta:"PixelYDimension,ImageHeight,ImageLength,ExifImageHeight,SourceImageHeight"` Orientation int `meta:"-"` Rotation int `meta:"Rotation"` Views int `meta:"-"` Albums []string `meta:"-"` Error error `meta:"-"` All map[string]string } // NewData creates a new metadata struct. func NewData() Data { return Data{ All: make(map[string]string), } } // AspectRatio returns the aspect ratio based on width and height. func (data Data) AspectRatio() float32 { width := float64(data.ActualWidth()) height := float64(data.ActualHeight()) if width <= 0 || height <= 0 { return 0 } aspectRatio := float32(math.Round((width/height)*100) / 100) return aspectRatio } // Portrait returns true if it's a portrait picture or video based on width and height. func (data Data) Portrait() bool { return data.ActualWidth() < data.ActualHeight() } // Megapixels returns the resolution in megapixels. func (data Data) Megapixels() int { return int(math.Round(float64(data.Width*data.Height) / 1000000)) } // HasDocumentID returns true if a DocumentID exists. func (data Data) HasDocumentID() bool { return rnd.IsUUID(data.DocumentID) } // HasInstanceID returns true if an InstanceID exists. func (data Data) HasInstanceID() bool { return rnd.IsUUID(data.InstanceID) } // HasTimeAndPlace if data contains a time and GPS position. func (data Data) HasTimeAndPlace() bool { return !data.TakenAt.IsZero() && data.Lat != 0 && data.Lng != 0 } // ActualWidth is the width after rotating the media file if needed. func (data Data) ActualWidth() int { if data.Orientation > 4 { return data.Height } return data.Width } // ActualHeight is the height after rotating the media file if needed. func (data Data) ActualHeight() int { if data.Orientation > 4 { return data.Width } return data.Height } // CellID returns the S2 cell ID. func (data Data) CellID() string { return s2.PrefixedToken(float64(data.Lat), float64(data.Lng)) }