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mediafile_meta.go
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mediafile_meta.go
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package photoprism
import (
"fmt"
"path/filepath"
"github.com/photoprism/photoprism/internal/meta"
"github.com/photoprism/photoprism/pkg/clean"
"github.com/photoprism/photoprism/pkg/fs"
"github.com/photoprism/photoprism/pkg/video"
)
// HasSidecarJson returns true if this file has or is a json sidecar file.
func (m *MediaFile) HasSidecarJson() bool {
if m.IsJSON() {
return true
}
return fs.SidecarJSON.FindFirst(m.FileName(), []string{Config().SidecarPath(), fs.PPHiddenPathname}, Config().OriginalsPath(), false) != ""
}
// SidecarJsonName returns the corresponding JSON sidecar file name as used by Google Photos (and potentially other apps).
func (m *MediaFile) SidecarJsonName() string {
jsonName := m.fileName + ".json"
if fs.FileExistsNotEmpty(jsonName) {
return jsonName
}
return ""
}
// ExifToolJsonName returns the cached ExifTool metadata file name.
func (m *MediaFile) ExifToolJsonName() (string, error) {
if Config().DisableExifTool() {
return "", fmt.Errorf("media: exiftool json files disabled")
}
return ExifToolCacheName(m.Hash())
}
// NeedsExifToolJson tests if an ExifTool JSON file needs to be created.
func (m *MediaFile) NeedsExifToolJson() bool {
if m.InSidecar() && m.IsImage() || !m.IsMedia() || m.Empty() {
return false
}
jsonName, err := m.ExifToolJsonName()
if err != nil {
return false
}
return !fs.FileExists(jsonName)
}
// CreateExifToolJson extracts metadata to a JSON file using Exiftool.
func (m *MediaFile) CreateExifToolJson(convert *Convert) error {
if !m.NeedsExifToolJson() {
return nil
} else if jsonName, err := convert.ToJson(m, false); err != nil {
log.Tracef("exiftool: %s", clean.Error(err))
log.Debugf("exiftool: failed parsing %s", clean.Log(m.RootRelName()))
} else if err = m.metaData.JSON(jsonName, ""); err != nil {
return fmt.Errorf("%s in %s (read json sidecar)", clean.Error(err), clean.Log(m.BaseName()))
}
return nil
}
// ReadExifToolJson reads metadata from a cached ExifTool JSON file.
func (m *MediaFile) ReadExifToolJson() error {
jsonName, err := m.ExifToolJsonName()
if err != nil {
return err
}
return m.metaData.JSON(jsonName, "")
}
// MetaData returns exif meta data of a media file.
func (m *MediaFile) MetaData() (result meta.Data) {
if !m.Ok() || !m.IsMedia() {
// Not a main media file.
return m.metaData
}
// Gather the data once and cache it.
m.metaOnce.Do(func() {
var err error
if m.ExifSupported() {
err = m.metaData.Exif(m.FileName(), m.FileType(), Config().ExifBruteForce())
} else {
err = fmt.Errorf("exif not supported")
}
// Parse regular JSON sidecar files ("img_1234.json")
if !m.IsSidecar() {
if jsonFiles := fs.SidecarJSON.FindAll(m.FileName(), []string{Config().SidecarPath(), fs.PPHiddenPathname}, Config().OriginalsPath(), false); len(jsonFiles) == 0 {
log.Tracef("metadata: found no additional sidecar file for %s", clean.Log(filepath.Base(m.FileName())))
} else {
for _, jsonFile := range jsonFiles {
jsonErr := m.metaData.JSON(jsonFile, m.BaseName())
if jsonErr != nil {
log.Debug(jsonErr)
} else {
err = nil
}
}
}
if jsonErr := m.ReadExifToolJson(); jsonErr != nil {
log.Debug(jsonErr)
} else {
err = nil
}
}
if err != nil {
m.metaData.Error = err
log.Debugf("%s in %s", err, clean.Log(m.BaseName()))
}
})
return m.metaData
}
// VideoInfo returns video information if this is a video file or has a video embedded.
func (m *MediaFile) VideoInfo() video.Info {
if !m.Ok() || !m.IsMedia() {
// Not a main media file.
return m.videoInfo
}
// Gather the data once and cache it.
m.videoOnce.Do(func() {
if info, err := video.ProbeFile(m.FileName()); err != nil {
log.Debugf("video: %s in %s", err, clean.Log(m.BaseName()))
} else {
m.videoInfo = info
}
})
return m.videoInfo
}