play.go

package main

import (
	"bytes"
	"io"
	"time"

	"github.com/gopxl/beep"
	"github.com/gopxl/beep/mp3"
	"github.com/gopxl/beep/speaker"
)

func playBytes(bs []byte) error {
	streamer, format, err := mp3.Decode(io.NopCloser(bytes.NewReader(bs)))
	if err != nil {
		return err
	}
	defer streamer.Close()

	err = speaker.Init(format.SampleRate, format.SampleRate.N(time.Second/10))
	if err != nil {
		return err
	}

	done := make(chan bool)
	speaker.Play(beep.Seq(streamer, beep.Callback(func() { done <- true })))
	<-done
	return nil
}