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1 // Copyright 2015 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_PUMP_H_ | |
6 #define REMOTING_HOST_AUDIO_PUMP_H_ | |
7 | |
8 #include <memory> | |
9 | |
10 #include "base/macros.h" | |
11 #include "base/memory/ref_counted.h" | |
12 #include "base/memory/weak_ptr.h" | |
13 #include "base/threading/thread_checker.h" | |
14 | |
15 namespace base { | |
16 class SingleThreadTaskRunner; | |
17 } // namespace base | |
18 | |
19 namespace remoting { | |
20 | |
21 namespace protocol { | |
22 class AudioStub; | |
23 } // namespace protocol | |
24 | |
25 class AudioCapturer; | |
26 class AudioEncoder; | |
27 class AudioPacket; | |
28 | |
29 // AudioPump is responsible for fetching audio data from the AudioCapturer | |
30 // and encoding it before passing it to the AudioStub for delivery to the | |
31 // client. Audio is captured and encoded on the audio thread and then passed to | |
32 // AudioStub on the network thread. | |
33 class AudioPump { | |
34 public: | |
35 // The caller must ensure that the |audio_stub| is not destroyed until the | |
36 // pump is destroyed. | |
37 AudioPump(scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner, | |
38 std::unique_ptr<AudioCapturer> audio_capturer, | |
39 std::unique_ptr<AudioEncoder> audio_encoder, | |
40 protocol::AudioStub* audio_stub); | |
41 virtual ~AudioPump(); | |
42 | |
43 // Pauses or resumes audio on a running session. This leaves the audio | |
44 // capturer running, and only affects whether or not the captured audio is | |
45 // encoded and sent on the wire. | |
46 void Pause(bool pause); | |
47 | |
48 private: | |
49 class Core; | |
50 | |
51 // Called on the network thread to send a captured packet to the audio stub. | |
52 void SendAudioPacket(std::unique_ptr<AudioPacket> packet, int size); | |
53 | |
54 // Callback for BufferedSocketWriter. | |
55 void OnPacketSent(int size); | |
56 | |
57 base::ThreadChecker thread_checker_; | |
58 | |
59 scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner_; | |
60 protocol::AudioStub* audio_stub_; | |
61 | |
62 std::unique_ptr<Core> core_; | |
63 | |
64 base::WeakPtrFactory<AudioPump> weak_factory_; | |
65 | |
66 DISALLOW_COPY_AND_ASSIGN(AudioPump); | |
67 }; | |
68 | |
69 } // namespace remoting | |
70 | |
71 #endif // REMOTING_HOST_AUDIO_PUMP_H_ | |
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