82d61d1f93
Animated GIFs are transcoded to AVC because it is much smaller and thus also suitable for long/large animations. In addition, this commit adds support for more metadata fields such as frame rate, number of frames, file capture timestamp (unix milliseconds), media type, and software version. Support for SVG files can later be implemented in a similar way.
140 lines
5 KiB
Go
140 lines
5 KiB
Go
package meta
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import (
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"math"
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"time"
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"github.com/photoprism/photoprism/pkg/rnd"
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"github.com/photoprism/photoprism/pkg/s2"
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)
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const (
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ImageTypeHDR = 3 // see https://exiftool.org/TagNames/Apple.html
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)
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// Data represents image metadata.
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type Data struct {
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FileName string `meta:"FileName"`
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DocumentID string `meta:"BurstUUID,MediaGroupUUID,ImageUniqueID,OriginalDocumentID,DocumentID"`
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InstanceID string `meta:"InstanceID,DocumentID"`
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TakenAt time.Time `meta:"DateTimeOriginal,CreationDate,CreateDate,MediaCreateDate,ContentCreateDate,DateTimeDigitized,DateTime,SubSecDateTimeOriginal,SubSecCreateDate"`
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TakenAtLocal time.Time `meta:"DateTimeOriginal,CreationDate,CreateDate,MediaCreateDate,ContentCreateDate,DateTimeDigitized,DateTime,SubSecDateTimeOriginal,SubSecCreateDate"`
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TakenGps time.Time `meta:"GPSDateTime,GPSDateStamp"`
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TakenNs int `meta:"-"`
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TimeZone string `meta:"-"`
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Duration time.Duration `meta:"Duration,MediaDuration,TrackDuration"`
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FPS float64 `meta:"VideoFrameRate,VideoAvgFrameRate"`
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Frames int `meta:"FrameCount"`
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Codec string `meta:"CompressorID,FileType"`
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Title string `meta:"Title"`
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Subject string `meta:"Subject,PersonInImage,ObjectName,HierarchicalSubject,CatalogSets"`
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Keywords Keywords `meta:"Keywords"`
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Notes string `meta:"Comment"`
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Artist string `meta:"Artist,Creator,OwnerName,Owner"`
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Description string `meta:"Description"`
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Copyright string `meta:"Rights,Copyright,WebStatement,Certificate"`
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License string `meta:"UsageTerms,License"`
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Projection string `meta:"ProjectionType"`
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ColorProfile string `meta:"ICCProfileName,ProfileDescription"`
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CameraMake string `meta:"CameraMake,Make"`
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CameraModel string `meta:"CameraModel,Model"`
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CameraOwner string `meta:"OwnerName"`
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CameraSerial string `meta:"SerialNumber"`
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LensMake string `meta:"LensMake"`
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LensModel string `meta:"Lens,LensModel"`
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Software string `meta:"Software,HistorySoftwareAgent,ProcessingSoftware"`
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Flash bool `meta:"-"`
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FocalLength int `meta:"FocalLength"`
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Exposure string `meta:"ExposureTime"`
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Aperture float32 `meta:"ApertureValue"`
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FNumber float32 `meta:"FNumber"`
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Iso int `meta:"ISO"`
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ImageType int `meta:"HDRImageType"`
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GPSPosition string `meta:"GPSPosition"`
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GPSLatitude string `meta:"GPSLatitude"`
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GPSLongitude string `meta:"GPSLongitude"`
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Lat float32 `meta:"-"`
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Lng float32 `meta:"-"`
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Altitude int `meta:"GlobalAltitude,GPSAltitude"`
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Width int `meta:"PixelXDimension,ImageWidth,ExifImageWidth,SourceImageWidth"`
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Height int `meta:"PixelYDimension,ImageHeight,ImageLength,ExifImageHeight,SourceImageHeight"`
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Orientation int `meta:"-"`
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Rotation int `meta:"Rotation"`
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Views int `meta:"-"`
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Albums []string `meta:"-"`
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Error error `meta:"-"`
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exif map[string]string
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}
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// NewData creates a new metadata struct.
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func NewData() Data {
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return Data{}
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}
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// AspectRatio returns the aspect ratio based on width and height.
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func (data Data) AspectRatio() float32 {
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width := float64(data.ActualWidth())
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height := float64(data.ActualHeight())
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if width <= 0 || height <= 0 {
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return 0
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}
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aspectRatio := float32(math.Round((width/height)*100) / 100)
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return aspectRatio
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}
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// Portrait returns true if it is a portrait picture or video based on width and height.
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func (data Data) Portrait() bool {
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return data.ActualWidth() < data.ActualHeight()
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}
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// IsHDR tests if it is a high dynamic range file.
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func (data Data) IsHDR() bool {
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return data.ImageType == ImageTypeHDR
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}
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// Megapixels returns the resolution in megapixels.
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func (data Data) Megapixels() int {
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return int(math.Round(float64(data.Width*data.Height) / 1000000))
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}
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// HasDocumentID returns true if a DocumentID exists.
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func (data Data) HasDocumentID() bool {
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return rnd.IsUUID(data.DocumentID)
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}
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// HasInstanceID returns true if an InstanceID exists.
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func (data Data) HasInstanceID() bool {
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return rnd.IsUUID(data.InstanceID)
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}
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// HasTimeAndPlace if data contains a time and GPS position.
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func (data Data) HasTimeAndPlace() bool {
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return !data.TakenAt.IsZero() && data.Lat != 0 && data.Lng != 0
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}
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// ActualWidth is the width after rotating the media file if needed.
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func (data Data) ActualWidth() int {
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if data.Orientation > 4 {
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return data.Height
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}
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return data.Width
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}
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// ActualHeight is the height after rotating the media file if needed.
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func (data Data) ActualHeight() int {
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if data.Orientation > 4 {
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return data.Width
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}
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return data.Height
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}
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// CellID returns the S2 cell ID.
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func (data Data) CellID() string {
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return s2.PrefixedToken(float64(data.Lat), float64(data.Lng))
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}
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