Add some options

image/encode_jpegli.go

@@ -11,19 +11,20 @@ import (
 )
 
 // NewEncoder returns a new Encoder.
-func NewEncoder(w io.Writer) *Encoder {
-	return &Encoder{w}
+func NewEncoder(w io.Writer, quality int) *Encoder {
+	return &Encoder{w, quality}
 }
 
 // Encoder struct.
 type Encoder struct {
-	w io.Writer
+	w       io.Writer
+	quality int
 }
 
 // Encode encodes image to JPEG.
 func (e Encoder) Encode(img image.Image) error {
 	return jpegli.Encode(e.w, img, &jpegli.EncodingOptions{
-		Quality:              75,
+		Quality:              e.quality,
 		ProgressiveLevel:     0,
 		ChromaSubsampling:    image.YCbCrSubsampleRatio420,
 		DCTMethod:            jpegli.DCTIFast,