| OLD | NEW |
| (Empty) |
| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef REMOTING_HOST_AUDIO_SCHEDULER_H_ | |
| 6 #define REMOTING_HOST_AUDIO_SCHEDULER_H_ | |
| 7 | |
| 8 #include "base/memory/ref_counted.h" | |
| 9 #include "base/memory/scoped_ptr.h" | |
| 10 | |
| 11 namespace base { | |
| 12 class SingleThreadTaskRunner; | |
| 13 } // namespace base | |
| 14 | |
| 15 namespace remoting { | |
| 16 | |
| 17 namespace protocol { | |
| 18 class AudioStub; | |
| 19 } // namespace protocol | |
| 20 | |
| 21 class AudioCapturer; | |
| 22 class AudioEncoder; | |
| 23 class AudioPacket; | |
| 24 | |
| 25 // AudioScheduler is responsible for fetching audio data from the AudioCapturer | |
| 26 // and encoding it before passing it to the AudioStub for delivery to the | |
| 27 // client. Audio is captured and encoded on the audio thread and then passed to | |
| 28 // AudioStub on the network thread. | |
| 29 class AudioScheduler : public base::RefCountedThreadSafe<AudioScheduler> { | |
| 30 public: | |
| 31 // Audio capture and encoding tasks are dispatched via the | |
| 32 // |audio_task_runner|. |audio_stub| tasks are dispatched via the | |
| 33 // |network_task_runner|. The caller must ensure that the |audio_capturer| and | |
| 34 // |audio_stub| exist until the scheduler is stopped using Stop() method. | |
| 35 AudioScheduler( | |
| 36 scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner, | |
| 37 scoped_refptr<base::SingleThreadTaskRunner> network_task_runner, | |
| 38 scoped_ptr<AudioCapturer> audio_capturer, | |
| 39 scoped_ptr<AudioEncoder> audio_encoder, | |
| 40 protocol::AudioStub* audio_stub); | |
| 41 | |
| 42 // Starts the recording session. | |
| 43 void Start(); | |
| 44 | |
| 45 // Stops the recording session. | |
| 46 void Stop(); | |
| 47 | |
| 48 // Pauses or resumes audio on a running session. This leaves the audio | |
| 49 // capturer running, and only affects whether or not the captured audio is | |
| 50 // encoded and sent on the wire. | |
| 51 void Pause(bool pause); | |
| 52 | |
| 53 private: | |
| 54 friend class base::RefCountedThreadSafe<AudioScheduler>; | |
| 55 virtual ~AudioScheduler(); | |
| 56 | |
| 57 // Called on the audio thread to start capturing. | |
| 58 void StartOnAudioThread(); | |
| 59 | |
| 60 // Called on the audio thread to stop capturing. | |
| 61 void StopOnAudioThread(); | |
| 62 | |
| 63 // Called on the audio thread when a new audio packet is available. | |
| 64 void EncodeAudioPacket(scoped_ptr<AudioPacket> packet); | |
| 65 | |
| 66 // Called on the network thread to send a captured packet to the audio stub. | |
| 67 void SendAudioPacket(scoped_ptr<AudioPacket> packet); | |
| 68 | |
| 69 scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner_; | |
| 70 scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_; | |
| 71 | |
| 72 scoped_ptr<AudioCapturer> audio_capturer_; | |
| 73 | |
| 74 scoped_ptr<AudioEncoder> audio_encoder_; | |
| 75 | |
| 76 protocol::AudioStub* audio_stub_; | |
| 77 | |
| 78 bool enabled_; | |
| 79 | |
| 80 DISALLOW_COPY_AND_ASSIGN(AudioScheduler); | |
| 81 }; | |
| 82 | |
| 83 } // namespace remoting | |
| 84 | |
| 85 #endif // REMOTING_HOST_AUDIO_SCHEDULER_H_ | |
| OLD | NEW |