Add jpegli

image/encode_jpegli.go

@@ -0,0 +1,35 @@
+//go:build jpegli
+
+// Package image.
+package image
+
+import (
+	"image"
+	"io"
+
+	"github.com/gen2brain/jpegli"
+)
+
+// NewEncoder returns a new Encoder.
+func NewEncoder(w io.Writer) *Encoder {
+	return &Encoder{w}
+}
+
+// Encoder struct.
+type Encoder struct {
+	w io.Writer
+}
+
+// Encode encodes image to JPEG.
+func (e Encoder) Encode(img image.Image) error {
+	return jpegli.Encode(e.w, img, &jpegli.EncodingOptions{
+		Quality:              75,
+		ProgressiveLevel:     0,
+		ChromaSubsampling:    image.YCbCrSubsampleRatio420,
+		DCTMethod:            jpegli.DCTIFast,
+		OptimizeCoding:       false,
+		AdaptiveQuantization: false,
+		StandardQuantTables:  false,
+		FancyDownsampling:    false,
+	})
+}