// Read reads a full mp3 frame. If p is too small to hold the frame,
// return the part that does fit (and io.ErrShortBuffer) and discard
// the rest of the frame.
func (mr *MP3Reader) Read(p []byte) (n int, err error) {
var f mp3.Frame
err = mr.d.Decode(&f)
if err != nil {
if err == io.ErrUnexpectedEOF {
err = io.EOF
}
return
}
r := f.Reader()
var x int
for {
x, err = r.Read(p)
n += x
if len(p) == 0 && err == nil {
err = io.ErrShortBuffer
}
if err != nil {
break
}
p = p[x:]
}
if err == io.EOF {
err = nil
}
return
}
func (hub *Hub) streamStep() {
r, err := os.Open(hub.track)
defer r.Close()
if err != nil {
log.Println(err)
return
}
d := mp3.NewDecoder(r)
var f mp3.Frame
for {
if err := d.Decode(&f); err != nil {
log.Println(err)
return
}
b := make([]byte, f.Size())
f.Reader().Read(b)
hub.SendMessage(b)
time.Sleep(f.Duration())
}
}
func getMp3Length(path string) (totalTime int64) {
// Returns length in milliseconds
r, err := os.Open(path)
if err != nil {
//fmt.Println(err)
return
}
d := mp3.NewDecoder(r)
var f mp3.Frame
totalTime = 0
for {
if err := d.Decode(&f); err != nil {
//fmt.Println(err)
return
}
totalTime += f.Duration().Nanoseconds() / 1000000
}
}