Piping for audio decoding.

remoting/client/audio_decode_scheduler.h

+// 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_CLIENT_AUDIO_DECODE_SCHEDULER_H_
+#define REMOTING_CLIENT_AUDIO_DECODE_SCHEDULER_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "remoting/protocol/audio_stub.h"
+
+namespace base {
+class SingleThreadTaskRunner;
+}  // namespace base
+
+namespace remoting {
+
+namespace protocol {
+class SessionConfig;
+}  // namespace protocol
+
+class AudioDecoder;
+class AudioPacket;
+class AudioPlayer;
+
+class AudioDecodeScheduler : public protocol::AudioStub {
+ public:
+  AudioDecodeScheduler(
+      scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
+      scoped_refptr<base::SingleThreadTaskRunner> audio_decode_task_runner,
+      scoped_ptr<AudioPlayer> audio_player);
+  ~AudioDecodeScheduler();
+
+  // Initializes decoder with the information from the protocol config.
+  void Initialize(const protocol::SessionConfig& config);
+
+  // AudioStub implementation.
+  virtual void ProcessAudioPacket(scoped_ptr<AudioPacket> packet,
+                                  const base::Closure& done) OVERRIDE;
+
+ private:
+  void DecodePacket(scoped_ptr<AudioPacket> packet, const base::Closure& done);

[Sergey Ulanov, 2012/08/03 17:59:55]

please add some short comments for this and then ext function to make it clear
which thread they are called on.

[kxing, 2012/08/03 20:55:13]

Done.

+
+  void ProcessDecodedPacket(scoped_ptr<AudioPacket> packet);
+
+  scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
+  scoped_refptr<base::SingleThreadTaskRunner> audio_decode_task_runner_;
+  scoped_ptr<AudioDecoder> decoder_;
+  scoped_ptr<AudioPlayer> audio_player_;
+
+  DISALLOW_COPY_AND_ASSIGN(AudioDecodeScheduler);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_CLIENT_AUDIO_DECODE_SCHEDULER_H_