package transcoder import ( "github.com/barnacs/compy/proxy" "github.com/pixiv/go-libjpeg/jpeg" ) type Jpeg struct { decOptions *jpeg.DecoderOptions encOptions *jpeg.EncoderOptions } func NewJpeg(quality int) *Jpeg { return &Jpeg{ decOptions: &jpeg.DecoderOptions{}, encOptions: &jpeg.EncoderOptions{ Quality: quality, OptimizeCoding: true, }, } } func (t *Jpeg) Transcode(w *proxy.ResponseWriter, r *proxy.ResponseReader) error { img, err := jpeg.Decode(r, t.decOptions) if err != nil { return err } if err = jpeg.Encode(w, img, t.encOptions); err != nil { return err } return nil }