func (t *Track) Init() (sampleRate, channels int, err error) {
b, err := t.r.get()
if err != nil {
return 0, 0, err
}
g, err := gme.New(b, defaultSampleRate)
if err != nil {
return 0, 0, err
}
if err := g.Start(t.track); err != nil {
return 0, 0, nil
}
t.g = g
return defaultSampleRate, defaultChannels, nil
}
func (t *Track) Info() (codec.SongInfo, error) {
var si codec.SongInfo
b, err := t.r.get()
if err != nil {
return si, err
}
g, err := gme.New(b, gme.InfoOnly)
if err != nil {
return si, err
}
info, err := g.Track(t.track)
g.Close()
return codec.SongInfo{
Time: info.PlayLength + gme.FadeLength,
Artist: info.Author,
Title: info.Song,
Album: info.Game,
Track: float64(t.track),
}, err
}
func NewSongs(rf codec.Reader) (codec.Songs, error) {
d := reader{
r: rf,
}
b, err := d.get()
if err != nil {
return nil, err
}
gg, err := gme.New(b, defaultSampleRate)
if err != nil {
return nil, err
}
songs := make(codec.Songs)
for i, tr := 0, gg.Tracks(); i < tr; i++ {
songs[codec.Int(i)] = &Track{
r: &d,
track: i,
}
}
return songs, nil
}