func loadRnd(fn string) ([2][][]float32, error) {
var r [2][][]float32
f, err := os.Open(fn)
if err != nil {
return r, err
}
defer f.Close()
t, err := CreateTable(f, 0)
if err != nil {
return r, err
}
r[0] = make([][]float32, t.NFrames())
r[1] = make([][]float32, t.NFrames())
rand.Seed(42)
for _, i := range rand.Perm(t.NFrames()) {
x := t.FindSample(int64(i) * int64(t.SamplesPerFrame()))
if _, err := f.Seek(x.Offset, 0); err != nil {
return r, err
}
d := mpa.Decoder{Input: f}
for k := 0; k < x.WarmUp; k++ {
d.DecodeFrame()
}
if err := d.DecodeFrame(); err != nil {
return r, err
}
for ch := 0; ch < 2; ch++ {
s := make([]float32, d.NSamples())
d.ReadSamples(ch, s)
r[ch][i] = s
}
}
return r, nil
}
func loadSeq(fn string) ([2][][]float32, error) {
var r [2][][]float32
f, err := os.Open(fn)
if err != nil {
return r, err
}
defer f.Close()
d := mpa.Decoder{Input: f}
for {
if err := d.DecodeFrame(); err != nil {
if err == io.EOF {
err = nil
}
return r, err
}
for ch := 0; ch < 2; ch++ {
s := make([]float32, d.NSamples())
d.ReadSamples(ch, s)
r[ch] = append(r[ch], s)
}
}
}