| // 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 REMOTING_HOST_AUDIO_SCHEDULER_H_ |
| #define REMOTING_HOST_AUDIO_SCHEDULER_H_ |
| |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| |
| namespace base { |
| class SingleThreadTaskRunner; |
| } // namespace base |
| |
| namespace remoting { |
| |
| namespace protocol { |
| class AudioStub; |
| } // namespace protocol |
| |
| class AudioCapturer; |
| class AudioEncoder; |
| class AudioPacket; |
| |
| // AudioScheduler is responsible for fetching audio data from the AudioCapturer |
| // and encoding it before passing it to the AudioStub for delivery to the |
| // client. Audio is captured and encoded on the audio thread and then passed to |
| // AudioStub on the network thread. |
| class AudioScheduler : public base::RefCountedThreadSafe<AudioScheduler> { |
| public: |
| // Audio capture and encoding tasks are dispatched via the |
| // |audio_task_runner|. |audio_stub| tasks are dispatched via the |
| // |network_task_runner|. The caller must ensure that the |audio_capturer| and |
| // |audio_stub| exist until the scheduler is stopped using Stop() method. |
| AudioScheduler( |
| scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner, |
| scoped_refptr<base::SingleThreadTaskRunner> network_task_runner, |
| scoped_ptr<AudioCapturer> audio_capturer, |
| scoped_ptr<AudioEncoder> audio_encoder, |
| protocol::AudioStub* audio_stub); |
| |
| // Starts the recording session. |
| void Start(); |
| |
| // Stops the recording session. |
| void Stop(); |
| |
| // Pauses or resumes audio on a running session. This leaves the audio |
| // capturer running, and only affects whether or not the captured audio is |
| // encoded and sent on the wire. |
| void Pause(bool pause); |
| |
| private: |
| friend class base::RefCountedThreadSafe<AudioScheduler>; |
| virtual ~AudioScheduler(); |
| |
| // Called on the audio thread to start capturing. |
| void StartOnAudioThread(); |
| |
| // Called on the audio thread to stop capturing. |
| void StopOnAudioThread(); |
| |
| // Called on the audio thread when a new audio packet is available. |
| void EncodeAudioPacket(scoped_ptr<AudioPacket> packet); |
| |
| // Called on the network thread to send a captured packet to the audio stub. |
| void SendAudioPacket(scoped_ptr<AudioPacket> packet); |
| |
| scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner_; |
| scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_; |
| |
| scoped_ptr<AudioCapturer> audio_capturer_; |
| |
| scoped_ptr<AudioEncoder> audio_encoder_; |
| |
| protocol::AudioStub* audio_stub_; |
| |
| bool network_stopped_; |
| |
| bool enabled_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AudioScheduler); |
| }; |
| |
| } // namespace remoting |
| |
| #endif // REMOTING_HOST_AUDIO_SCHEDULER_H_ |