func TestNewClipFromWave(t *testing.T) {
c, _ := NewClipFromWave(testSoundFilePath)
w, _ := wave.OpenFile(testSoundFilePath)
waveLen := len(w.Samples) / int(w.Header.NumChannels)
for chanNum := 0; chanNum < len(c.Samples); chanNum++ {
clipLen := len(c.Samples[chanNum])
if clipLen != waveLen {
t.Errorf("Expected %d samples instead of %d in clip on channel %d\n",
waveLen, clipLen, chanNum)
}
}
}
func TestNewWaveFromClip(t *testing.T) {
c, _ := NewClipFromWave(testSoundFilePath)
w, _ := wave.OpenFile(testSoundFilePath)
w2 := NewWaveFromClip(c)
if len(w.Samples) != len(w2.Samples) {
t.Errorf("Expected length %d and have length %d\n",
len(w.Samples), len(w2.Samples))
}
for i, sample := range w.Samples {
if sample != w2.Samples[i] {
t.Errorf("Expected %d instead of %d for sample offset %d\n",
sample, w2.Samples[i], i)
}
}
}
// Creates a new clip from a wave file name.
func NewClipFromWave(waveFileName string) (*Clip, error) {
c := new(Clip)
w, err := wave.OpenFile(waveFileName)
if err != nil {
return c, err
}
c.Name = w.FileName // TODO: Remove file extensions.
numChannels := int(w.Header.NumChannels)
c = NewClip(int(w.Header.NumChannels))
c.SampleRate = int(w.Header.SampleRate)
// Deinterlace the wave sample data into disparate slices.
for i, sample := range w.Samples {
c.Samples[i%numChannels] = append(c.Samples[i%numChannels], sample)
}
return c, nil
}