Replace AudioScheduler with AudioPump.

remoting/host/audio_pump.h

+// 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 REMOTING_HOST_AUDIO_PUMP_H_
+#define REMOTING_HOST_AUDIO_PUMP_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "base/threading/thread_checker.h"
+
+namespace base {
+class SingleThreadTaskRunner;
+}  // namespace base
+
+namespace remoting {
+
+namespace protocol {
+class AudioStub;
+}  // namespace protocol
+
+class AudioCapturer;
+class AudioEncoder;
+class AudioPacket;
+
+// AudioPump 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 AudioPump {
+ public:
+  // The caller must ensure that the |audio_stub| is not destroyed until the
+  // pump is destroyed.
+  AudioPump(
+      scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner,
+      scoped_ptr<AudioCapturer> audio_capturer,
+      scoped_ptr<AudioEncoder> audio_encoder,
+      protocol::AudioStub* audio_stub);
+  virtual ~AudioPump();
+
+  // 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:
+  class Core;
+
+  // Called on the network thread to send a captured packet to the audio stub.
+  void SendAudioPacket(scoped_ptr<AudioPacket> packet);
+
+  base::ThreadChecker thread_checker_;
+
+  scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner_;
+  protocol::AudioStub* audio_stub_;
+
+  scoped_ptr<Core> core_;
+
+  base::WeakPtrFactory<AudioPump> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(AudioPump);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_HOST_AUDIO_PUMP_H_