3 files changed, 9 insertions, 0 deletions
diff --git a/media/audio/win/audio_output_win.cc b/media/audio/win/audio_output_win.cc
index 880555b..5990e27 100644
--- a/media/audio/win/audio_output_win.cc
+++ b/media/audio/win/audio_output_win.cc
@@ -61,6 +61,10 @@ class AudioOutputStreamMockWin : public AudioOutputStream {
     *right_level = right_volume_;
   }
 
+  virtual size_t GetNumBuffers() {
+    return 1;
+  }
+
   virtual void Close() {
     callback_->OnClose(this);
     callback_ = NULL;
diff --git a/media/audio/win/waveout_output_win.cc b/media/audio/win/waveout_output_win.cc
index 95f70ab..59efa4e 100644
--- a/media/audio/win/waveout_output_win.cc
+++ b/media/audio/win/waveout_output_win.cc
@@ -193,6 +193,10 @@ void PCMWaveOutAudioOutputStream::GetVolume(double* left_level,
     return;
 }
 
+size_t PCMWaveOutAudioOutputStream::GetNumBuffers() {
+  return kNumBuffers;
+}
+
 void PCMWaveOutAudioOutputStream::HandleError(MMRESULT error) {
   DLOG(WARNING) << "PCMWaveOutAudio error " << error;
   callback_->OnError(this, error);
diff --git a/media/audio/win/waveout_output_win.h b/media/audio/win/waveout_output_win.h
index 1c8ffa6..8b90e69 100644
--- a/media/audio/win/waveout_output_win.h
+++ b/media/audio/win/waveout_output_win.h
@@ -40,6 +40,7 @@ class PCMWaveOutAudioOutputStream : public AudioOutputStream {
   virtual void Stop();
   virtual void SetVolume(double left_level, double right_level);
   virtual void GetVolume(double* left_level, double* right_level);
+  virtual size_t GetNumBuffers();
 
   // Sends a buffer to the audio driver for playback.
   void QueueNextPacket(WAVEHDR* buffer);