Exposes a shlib interface for media/audio path.

chromecast/media/audio/cast_audio_manager_factory.h

+// 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 CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_MANAGER_FACTORY_H_
+#define CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_MANAGER_FACTORY_H_
+
+#include "base/macros.h"
+#include "media/audio/audio_manager_factory.h"
+
+namespace chromecast {
+
+class CastAudioOutputDevice;
+
+// Implementation of media::AudioManagerFactory which creates an instance of
+// CastAudioManager.
+class CastAudioManagerFactory : public media::AudioManagerFactory {
+ public:
+  // |audio_stream_output_device| is used to provide the AudioManager with audio
+  // streams. This class does not take ownership of |audio_stream_output_device|
+  // which must be non-null and must outlive this factory.
+  explicit CastAudioManagerFactory(
+      chromecast::CastAudioOutputDevice* audio_stream_output_device);
+  ~CastAudioManagerFactory() override;
+
+  // Creates and returns a CastAudioManager instance. Caller owns the
+  // reutrned instance.
+  media::AudioManager* CreateInstance(
+      media::AudioLogFactory* audio_log_factory) override;
+
+ private:
+  chromecast::CastAudioOutputDevice* audio_stream_output_device_;
+
+  DISALLOW_COPY_AND_ASSIGN(CastAudioManagerFactory);
+};
+
+}  // namespace chromecast
+
+#endif  // CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_MANAGER_FACTORY_H_