func (n *NSFSong) Info() (si codec.SongInfo, err error) {
ns := n.NSF
if ns == nil {
r, _, err := n.Reader()
if err != nil {
return si, err
}
defer r.Close()
ns, err = nsf.New(r)
if err != nil {
return si, err
}
}
s := n.NSF.Songs[n.Index-1]
title := s.Name
if title == "" {
title = fmt.Sprintf("%s:%02d", n.NSF.Game, n.Index)
}
si = codec.SongInfo{
Time: s.Duration,
Artist: n.NSF.Artist,
Album: n.NSF.Game,
Track: float64(n.Index),
Title: title,
}
return
}
func (n *NSFSong) Init() (sampleRate, channels int, err error) {
if n.NSF == nil {
r, _, err := n.Reader()
if err != nil {
return 0, 0, err
}
defer r.Close()
n.NSF, err = nsf.New(r)
if err != nil {
return 0, 0, err
}
}
n.NSF.Init(n.Index)
n.Playing = true
return int(n.NSF.SampleRate), 1, nil
}
func ReadNSFSongs(rf codec.Reader) (codec.Songs, error) {
r, _, err := rf()
if err != nil {
return nil, err
}
defer r.Close()
n, err := nsf.New(r)
if err != nil {
return nil, err
}
songs := make(codec.Songs, len(n.Songs))
for i := 0; i < len(n.Songs); i++ {
songs[codec.Int(i)] = &NSFSong{
NSF: n,
Index: i + 1,
Reader: rf,
}
}
return songs, nil
}