80 lines
1.1 KiB
Go
80 lines
1.1 KiB
Go
package opus
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import (
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"context"
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"log"
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"os"
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"sync"
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"testing"
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"time"
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"github.com/faiface/beep"
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)
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var (
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mu sync.Mutex
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mixer beep.Mixer
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frameSize int = 960
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samples = make([][2]float64, frameSize)
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buf []byte
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maxBytes int = (frameSize * 2) * 2
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done chan struct{}
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)
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func update() {
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mu.Lock()
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mixer.Stream(samples)
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mu.Unlock()
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for i := range samples {
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for c := range samples[i] {
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val := samples[i][c]
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if val < -1 {
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val = -1
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}
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if val > +1 {
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val = +1
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}
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valInt16 := int16(val * (1<<15 - 1))
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low := byte(valInt16)
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high := byte(valInt16 >> 8)
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buf[i*4+c*2+0] = low
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buf[i*4+c*2+1] = high
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}
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}
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//log.Printf("%+v", buf)
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}
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func TestMain(t *testing.T) {
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buf = make([]byte, maxBytes)
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ctx, cancel := context.WithTimeout(context.Background(), time.Minute*9)
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defer cancel()
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file, err := os.Open("test.opus")
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if err != nil {
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log.Fatal(err)
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}
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d, err := New(file)
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if err != nil {
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log.Fatal(err)
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}
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loop := beep.Loop(-1, d)
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mu.Lock()
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mixer.Add(loop)
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mu.Unlock()
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for {
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select {
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default:
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update()
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case <-ctx.Done():
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return
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}
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}
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}
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