100 lines
2.2 KiB
Go
100 lines
2.2 KiB
Go
package thumb
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import (
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"fmt"
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"image"
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_ "image/gif"
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_ "image/jpeg"
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_ "image/png"
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"os"
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"path/filepath"
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"github.com/disintegration/imaging"
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"github.com/mandykoh/prism/meta/autometa"
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"github.com/photoprism/photoprism/pkg/colors"
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"github.com/photoprism/photoprism/pkg/fs"
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"github.com/photoprism/photoprism/pkg/sanitize"
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)
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// Open loads an image from disk, rotates it, and converts the color profile if necessary.
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func Open(fileName string, orientation int) (result image.Image, err error) {
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if fileName == "" {
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return result, fmt.Errorf("filename missing")
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}
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// Open JPEG?
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if fs.GetFileFormat(fileName) == fs.FormatJpeg {
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return OpenJpeg(fileName, orientation)
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}
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// Open file with imaging function.
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img, err := imaging.Open(fileName)
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if err != nil {
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return result, err
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}
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// Rotate?
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if orientation > 1 {
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img = Rotate(img, orientation)
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}
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return img, nil
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}
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// OpenJpeg loads a JPEG image from disk, rotates it, and converts the color profile if necessary.
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func OpenJpeg(fileName string, orientation int) (result image.Image, err error) {
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if fileName == "" {
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return result, fmt.Errorf("filename missing")
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}
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logName := sanitize.Log(filepath.Base(fileName))
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// Open file.
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fileReader, err := os.Open(fileName)
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if err != nil {
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return result, err
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}
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defer fileReader.Close()
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// Read color metadata.
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md, imgStream, err := autometa.Load(fileReader)
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var img image.Image
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if err != nil {
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log.Warnf("resample: %s in %s (read color metadata)", err, logName)
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img, err = imaging.Decode(fileReader)
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} else {
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img, err = imaging.Decode(imgStream)
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}
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if err != nil {
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return result, err
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}
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// Read ICC profile and convert colors if possible.
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if md != nil {
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if iccProfile, err := md.ICCProfile(); err != nil || iccProfile == nil {
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// Do nothing.
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log.Tracef("resample: %s has no color profile", logName)
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} else if profile, err := iccProfile.Description(); err == nil && profile != "" {
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log.Tracef("resample: %s has color profile %s", logName, sanitize.Log(profile))
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switch {
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case colors.ProfileDisplayP3.Equal(profile):
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img = colors.ToSRGB(img, colors.ProfileDisplayP3)
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}
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}
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}
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// Rotate?
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if orientation > 1 {
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img = Rotate(img, orientation)
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}
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return img, nil
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}
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