stash/pkg/scene/screenshot.go

98 lines
2.3 KiB
Go

package scene
import (
"bytes"
"image"
"image/jpeg"
"os"
"github.com/stashapp/stash/pkg/ffmpeg"
"github.com/stashapp/stash/pkg/logger"
"github.com/stashapp/stash/pkg/manager/paths"
"github.com/stashapp/stash/pkg/models"
"github.com/disintegration/imaging"
// needed to decode other image formats
_ "image/gif"
_ "image/png"
)
type screenshotter interface {
Screenshot(probeResult ffmpeg.VideoFile, options ffmpeg.ScreenshotOptions) error
}
func makeScreenshot(encoder screenshotter, probeResult ffmpeg.VideoFile, outputPath string, quality int, width int, time float64) {
options := ffmpeg.ScreenshotOptions{
OutputPath: outputPath,
Quality: quality,
Time: time,
Width: width,
}
if err := encoder.Screenshot(probeResult, options); err != nil {
logger.Warnf("[encoder] failure to generate screenshot: %v", err)
}
}
type ScreenshotSetter interface {
SetScreenshot(scene *models.Scene, imageData []byte) error
}
type PathsScreenshotSetter struct {
Paths *paths.Paths
FileNamingAlgorithm models.HashAlgorithm
}
func (ss *PathsScreenshotSetter) SetScreenshot(scene *models.Scene, imageData []byte) error {
checksum := scene.GetHash(ss.FileNamingAlgorithm)
return SetScreenshot(ss.Paths, checksum, imageData)
}
func writeImage(path string, imageData []byte) error {
f, err := os.Create(path)
if err != nil {
return err
}
defer f.Close()
_, err = f.Write(imageData)
return err
}
func writeThumbnail(path string, thumbnail image.Image) error {
f, err := os.Create(path)
if err != nil {
return err
}
defer f.Close()
return jpeg.Encode(f, thumbnail, nil)
}
func SetScreenshot(paths *paths.Paths, checksum string, imageData []byte) error {
thumbPath := paths.Scene.GetThumbnailScreenshotPath(checksum)
normalPath := paths.Scene.GetScreenshotPath(checksum)
img, _, err := image.Decode(bytes.NewReader(imageData))
if err != nil {
return err
}
// resize to 320 width maintaining aspect ratio, for the thumbnail
const width = 320
origWidth := img.Bounds().Max.X
origHeight := img.Bounds().Max.Y
height := width / origWidth * origHeight
thumbnail := imaging.Resize(img, width, height, imaging.Lanczos)
err = writeThumbnail(thumbPath, thumbnail)
if err != nil {
return err
}
err = writeImage(normalPath, imageData)
return err
}