| // Copyright (c) 2013 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 MEDIA_AUDIO_AUDIO_SOURCE_DIVERTER_H_ |
| #define MEDIA_AUDIO_AUDIO_SOURCE_DIVERTER_H_ |
| |
| #include "media/base/media_export.h" |
| |
| // Audio sources may optionally implement AudioSourceDiverter to temporarily |
| // divert audio data to an alternate AudioOutputStream. This allows the audio |
| // data to be plumbed to an alternate consumer; for example, a loopback |
| // mechanism for audio mirroring. |
| |
| namespace media { |
| |
| class AudioOutputStream; |
| class AudioParameters; |
| |
| class MEDIA_EXPORT AudioSourceDiverter { |
| public: |
| // Returns the audio parameters of the divertable audio data. |
| virtual const AudioParameters& GetAudioParameters() = 0; |
| |
| // Start providing audio data to the given |to_stream|, which is in an |
| // unopened state. |to_stream| remains under the control of the |
| // AudioSourceDiverter. |
| virtual void StartDiverting(AudioOutputStream* to_stream) = 0; |
| |
| // Stops diverting audio data to the stream. The AudioSourceDiverter is |
| // responsible for making sure the stream is closed, perhaps asynchronously. |
| virtual void StopDiverting() = 0; |
| |
| protected: |
| virtual ~AudioSourceDiverter() {} |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_AUDIO_AUDIO_SOURCE_DIVERTER_H_ |