| // 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 WEBKIT_MEDIA_MEDIA_STREAM_AUDIO_RENDERER_H_ |
| #define WEBKIT_MEDIA_MEDIA_STREAM_AUDIO_RENDERER_H_ |
| |
| #include "base/memory/ref_counted.h" |
| #include "base/time.h" |
| |
| namespace webkit_media { |
| |
| class MediaStreamAudioRenderer |
| : public base::RefCountedThreadSafe<MediaStreamAudioRenderer> { |
| public: |
| // Starts rendering audio. |
| virtual void Start() = 0; |
| |
| // Stops rendering audio. |
| virtual void Stop() = 0; |
| |
| // Resumes rendering audio after being paused. |
| virtual void Play() = 0; |
| |
| // Temporarily suspends rendering audio. The audio stream might still be |
| // active but new audio data is not provided to the consumer. |
| virtual void Pause() = 0; |
| |
| // Sets the output volume. |
| virtual void SetVolume(float volume) = 0; |
| |
| // Time stamp that reflects the current render time. Should not be updated |
| // when paused. |
| virtual base::TimeDelta GetCurrentRenderTime() const = 0; |
| |
| // Returns true if the implementation is a local renderer and false |
| // otherwise. |
| virtual bool IsLocalRenderer() const = 0; |
| |
| protected: |
| friend class base::RefCountedThreadSafe<MediaStreamAudioRenderer>; |
| |
| MediaStreamAudioRenderer(); |
| virtual ~MediaStreamAudioRenderer(); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(MediaStreamAudioRenderer); |
| }; |
| |
| } // namespace webkit_media |
| |
| #endif // WEBKIT_MEDIA_MEDIA_STREAM_AUDIO_RENDERER_H_ |