124 lines
3 KiB
Go
124 lines
3 KiB
Go
package photoprism
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import (
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"fmt"
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"github.com/disintegration/imaging"
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"log"
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"os"
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"path/filepath"
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"strings"
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)
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func CreateThumbnailsFromOriginals(originalsPath string, thumbnailsPath string, size int, square bool) {
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err := filepath.Walk(originalsPath, func(filename string, fileInfo os.FileInfo, err error) error {
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if err != nil || fileInfo.IsDir() || strings.HasPrefix(filepath.Base(filename), ".") {
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return nil
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}
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mediaFile := NewMediaFile(filename)
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if !mediaFile.Exists() || !mediaFile.IsJpeg() {
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return nil
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}
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if square {
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log.Printf("Creating square %dpx thumbnail for %s", size, filename)
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if _, err := mediaFile.GetSquareThumbnail(thumbnailsPath, size); err != nil {
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log.Print(err.Error())
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}
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} else {
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log.Printf("Creating %dpx thumbnail for %s", size, filename)
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if _, err := mediaFile.GetThumbnail(thumbnailsPath, size); err != nil {
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log.Print(err.Error())
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}
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}
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return nil
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})
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if err != nil {
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log.Print(err.Error())
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}
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}
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func (m *MediaFile) GetThumbnail(path string, size int) (result *MediaFile, err error) {
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canonicalName := m.GetCanonicalName()
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dateCreated := m.GetDateCreated()
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thumbnailPath := fmt.Sprintf("%s/%dpx/%s", path, size, dateCreated.UTC().Format("2006/01"))
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os.MkdirAll(thumbnailPath, os.ModePerm)
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thumbnailFilename := fmt.Sprintf("%s/%s_%dpx.jpg", thumbnailPath, canonicalName, size)
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if fileExists(thumbnailFilename) {
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return NewMediaFile(thumbnailFilename), nil
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}
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return m.CreateThumbnail(thumbnailFilename, size)
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}
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// Resize preserving the aspect ratio
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func (m *MediaFile) CreateThumbnail(filename string, size int) (result *MediaFile, err error) {
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image, err := imaging.Open(m.filename)
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if err != nil {
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log.Printf("open failed: %s", err.Error())
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return nil, err
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}
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image = imaging.Fit(image, size, size, imaging.Lanczos)
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err = imaging.Save(image, filename)
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if err != nil {
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log.Fatalf("failed to save image: %v", err)
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return nil, err
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}
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result = NewMediaFile(filename)
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return result, nil
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}
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func (m *MediaFile) GetSquareThumbnail(path string, size int) (result *MediaFile, err error) {
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canonicalName := m.GetCanonicalName()
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dateCreated := m.GetDateCreated()
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thumbnailPath := fmt.Sprintf("%s/square/%dpx/%s", path, size, dateCreated.UTC().Format("2006/01"))
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os.MkdirAll(thumbnailPath, os.ModePerm)
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thumbnailFilename := fmt.Sprintf("%s/%s_square_%dpx.jpg", thumbnailPath, canonicalName, size)
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if fileExists(thumbnailFilename) {
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return NewMediaFile(thumbnailFilename), nil
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}
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return m.CreateSquareThumbnail(thumbnailFilename, size)
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}
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// Resize and crop to square format
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func (m *MediaFile) CreateSquareThumbnail(filename string, size int) (result *MediaFile, err error) {
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image, err := imaging.Open(m.filename)
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if err != nil {
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log.Printf("open failed: %s", err.Error())
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return nil, err
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}
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image = imaging.Fill(image, size, size, imaging.Center, imaging.Lanczos)
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err = imaging.Save(image, filename)
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if err != nil {
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log.Fatalf("failed to save image: %v", err)
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return nil, err
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}
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result = NewMediaFile(filename)
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return result, nil
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}
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