Index: chrome/renderer/media/cast_receiver_audio_valve.h |
diff --git a/chrome/renderer/media/cast_receiver_audio_valve.h b/chrome/renderer/media/cast_receiver_audio_valve.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4ac8a93b433a726fdf86d19e50277085fbce171e |
--- /dev/null |
+++ b/chrome/renderer/media/cast_receiver_audio_valve.h |
@@ -0,0 +1,42 @@ |
+// Copyright 2015 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef CHROME_RENDERER_MEDIA_CAST_RECEIVER_AUDIO_VALVE_H_ |
+#define CHROME_RENDERER_MEDIA_CAST_RECEIVER_AUDIO_VALVE_H_ |
+ |
+#include "base/synchronization/lock.h" |
+#include "media/base/audio_capturer_source.h" |
+ |
+namespace media { |
+class AudioBus; |
+} |
+ |
+// Forwards calls to |cb| until Stop is called. |
+// Thread-safe. |
+// All functions may block depending on contention. |
+class CastReceiverAudioValve : |
+ public media::AudioCapturerSource::CaptureCallback, |
+ public base::RefCountedThreadSafe<CastReceiverAudioValve> { |
+ public: |
+ explicit CastReceiverAudioValve( |
+ media::AudioCapturerSource::CaptureCallback* cb); |
+ |
+ // AudioCapturerSource::CaptureCallback implementation. |
+ void Capture(const media::AudioBus* audio_source, |
+ int audio_delay_milliseconds, |
+ double volume, |
+ bool key_pressed) override; |
+ void OnCaptureError() override; |
+ |
+ // When this returns, no more calls will be forwarded to |cb|. |
+ void Stop(); |
+ |
+ private: |
+ friend class base::RefCountedThreadSafe<CastReceiverAudioValve>; |
+ ~CastReceiverAudioValve() override; |
+ media::AudioCapturerSource::CaptureCallback* cb_; |
+ base::Lock lock_; |
+}; |
+ |
+#endif // CHROME_RENDERER_MEDIA_CAST_RECEIVER_AUDIO_VALVE_H_ |