to be continued

drivers/audio/wavfifo.go

@@ -68,12 +68,14 @@ func (w *PCMStreamDriver) AudioRecord(p prop.Media) (audio.Reader, error) {
 
 	reader := func() (wave.Audio, func(), error) {
 		a := wave.NewInt16Interleaved(chunkInfo)
+		ticker := time.NewTicker(p.Latency)
+		defer ticker.Stop()
 		select {
 		case <-w.closed:
 			return nil, func() {}, io.EOF
 		case pcmData := <-w.PCM:
 			copy(a.Data, bytesTo16BitSamples(pcmData[:]))
-		case <-time.After(p.Latency):
+		case <-ticker.C:
 			// no stuck
 		}
 		return a, func() {}, nil

drivers/video/ppm.go

@@ -59,6 +59,9 @@ func (v *PPMStreamDriver) VideoRecord(p prop.Media) (video.Reader, error) {
 		image.YCbCrSubsampleRatio420,
 	)
 	r := video.ReaderFunc(func() (img image.Image, release func(), err error) {
+		ticker := time.NewTicker(time.Second / time.Duration(p.FrameRate))
+		defer ticker.Stop()
+
 		select {
 		case <-v.closed:
 			return nil, func() {}, io.EOF
@@ -82,7 +85,7 @@ func (v *PPMStreamDriver) VideoRecord(p prop.Media) (video.Reader, error) {
 					canvas.Cr[canvas.COffset(x, y)] = Cr
 				}
 			}
-		case <-time.After(time.Second / time.Duration(p.FrameRate)):
+		case <-ticker.C:
 		}
 		return canvas, func() {}, nil
 	})