audio: Use runtime.Gosched() instead of time.Sleep(1)

exp/audio/audio_js.go

@@ -18,7 +18,7 @@ package audio
 
 import (
 	"io"
-	"time"
+	"runtime"
 
 	"github.com/gopherjs/gopherjs/js"
 )
@@ -108,6 +108,7 @@ func (p *player) proceed() error {
 		if err != nil {
 			return err
 		}
+		runtime.Gosched()
 	}
 	return nil
 }
@@ -125,7 +126,7 @@ func (p *player) start() error {
 				// TODO: Record the last error
 				panic(err)
 			}
-			time.Sleep(1)
+			runtime.Gosched()
 		}
 	}()
 	return nil

exp/audio/audio_openal.go

@@ -20,7 +20,6 @@ import (
 	"fmt"
 	"io"
 	"runtime"
-	"time"
 
 	"golang.org/x/mobile/exp/audio/al"
 )
@@ -136,7 +135,7 @@ func (p *player) start() error {
 				// TODO: Record the last error
 				panic(err)
 			}
-			time.Sleep(1)
+			runtime.Gosched()
 		}
 	}()
 	return nil

exp/audio/audio_windows.go

@@ -27,6 +27,7 @@ import "C"
 import (
 	"fmt"
 	"io"
+	"runtime"
 	"time"
 	"unsafe"
 )
@@ -43,7 +44,7 @@ func newHeader(waveOut C.HWAVEOUT, bufferSize int) header {
 	h := header{
 		buffer:     buf,
 		bufferSize: bufferSize,
-		waveHdr:    C.WAVEHDR{
+		waveHdr: C.WAVEHDR{
 			lpData:         C.LPSTR(buf),
 			dwBufferLength: C.DWORD(bufferSize),
 		},
@@ -66,6 +67,7 @@ func (h *header) Write(waveOut C.HWAVEOUT, data []byte) {
 }
 
 const numHeader = 8
+
 var sem = make(chan struct{}, numHeader)
 
 //export releaseSemaphore
@@ -117,7 +119,7 @@ func startPlaying(src io.Reader, sampleRate int) error {
 				// TODO: Propagate this error?
 				panic(err)
 			}
-			time.Sleep(1)
+			runtime.Gosched()
 		}
 		// TODO: Finalize the wave handler
 	}()