| // Copyright (c) 2012 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_FAKE_AUDIO_OUTPUT_STREAM_H_ |
| #define MEDIA_AUDIO_FAKE_AUDIO_OUTPUT_STREAM_H_ |
| |
| #include "base/memory/scoped_ptr.h" |
| #include "media/audio/audio_io.h" |
| #include "media/audio/audio_parameters.h" |
| #include "media/audio/fake_audio_consumer.h" |
| |
| namespace media { |
| |
| class AudioManagerBase; |
| |
| // A fake implementation of AudioOutputStream. Used for testing and when a real |
| // audio output device is unavailable or refusing output (e.g. remote desktop). |
| // Callbacks are driven on the AudioManager's message loop. |
| class MEDIA_EXPORT FakeAudioOutputStream : public AudioOutputStream { |
| public: |
| static AudioOutputStream* MakeFakeStream(AudioManagerBase* manager, |
| const AudioParameters& params); |
| |
| // AudioOutputStream implementation. |
| virtual bool Open() OVERRIDE; |
| virtual void Start(AudioSourceCallback* callback) OVERRIDE; |
| virtual void Stop() OVERRIDE; |
| virtual void SetVolume(double volume) OVERRIDE; |
| virtual void GetVolume(double* volume) OVERRIDE; |
| virtual void Close() OVERRIDE; |
| |
| private: |
| FakeAudioOutputStream(AudioManagerBase* manager, |
| const AudioParameters& params); |
| virtual ~FakeAudioOutputStream(); |
| |
| // Task that periodically calls OnMoreData() to consume audio data. |
| void CallOnMoreData(AudioBus* audio_bus); |
| |
| AudioManagerBase* audio_manager_; |
| AudioSourceCallback* callback_; |
| FakeAudioConsumer fake_consumer_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FakeAudioOutputStream); |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_AUDIO_FAKE_AUDIO_OUTPUT_STREAM_H_ |