| // 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_OUTPUT_STREAM_H_ |
| #define CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_OUTPUT_STREAM_H_ |
| |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/time/time.h" |
| #include "media/audio/audio_io.h" |
| #include "media/base/audio_parameters.h" |
| |
| namespace chromecast { |
| namespace media { |
| |
| class CastAudioManager; |
| class DecoderBufferBase; |
| |
| class CastAudioOutputStream : public ::media::AudioOutputStream { |
| public: |
| CastAudioOutputStream(const ::media::AudioParameters& audio_params, |
| CastAudioManager* audio_manager); |
| ~CastAudioOutputStream() override; |
| |
| // ::media::AudioOutputStream implementation. |
| bool Open() override; |
| void Close() override; |
| void Start(AudioSourceCallback* source_callback) override; |
| void Stop() override; |
| void SetVolume(double volume) override; |
| void GetVolume(double* volume) override; |
| |
| private: |
| class Backend; |
| |
| void PushBuffer(); |
| void OnPushBufferComplete(bool success); |
| |
| const ::media::AudioParameters audio_params_; |
| CastAudioManager* const audio_manager_; |
| |
| double volume_; |
| AudioSourceCallback* source_callback_; |
| std::unique_ptr<::media::AudioBus> audio_bus_; |
| scoped_refptr<media::DecoderBufferBase> decoder_buffer_; |
| std::unique_ptr<Backend> backend_; |
| const base::TimeDelta buffer_duration_; |
| bool push_in_progress_; |
| base::TimeTicks next_push_time_; |
| |
| base::WeakPtrFactory<CastAudioOutputStream> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CastAudioOutputStream); |
| }; |
| |
| } // namespace media |
| } // namespace chromecast |
| |
| #endif // CHROMECAST_MEDIA_AUDIO_CAST_AUDIO_OUTPUT_STREAM_H_ |