1// Copyright 2013 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 MEDIA_CAST_AUDIO_SENDER_AUDIO_ENCODER_H_
6#define MEDIA_CAST_AUDIO_SENDER_AUDIO_ENCODER_H_
7
8#include "base/memory/ref_counted.h"
9#include "base/memory/scoped_ptr.h"
10#include "base/threading/thread_checker.h"
11#include "media/base/audio_bus.h"
12#include "media/cast/cast_config.h"
13#include "media/cast/cast_environment.h"
14
15namespace base {
16class TimeTicks;
17}
18
19namespace media {
20namespace cast {
21
22class AudioEncoder {
23 public:
24  typedef base::Callback<void(scoped_ptr<transport::EncodedFrame>)>
25      FrameEncodedCallback;
26
27  AudioEncoder(const scoped_refptr<CastEnvironment>& cast_environment,
28               const AudioSenderConfig& audio_config,
29               const FrameEncodedCallback& frame_encoded_callback);
30  virtual ~AudioEncoder();
31
32  CastInitializationStatus InitializationResult() const;
33
34  void InsertAudio(scoped_ptr<AudioBus> audio_bus,
35                   const base::TimeTicks& recorded_time);
36
37 private:
38  class ImplBase;
39  class OpusImpl;
40  class Pcm16Impl;
41
42  const scoped_refptr<CastEnvironment> cast_environment_;
43  scoped_refptr<ImplBase> impl_;
44
45  // Used to ensure only one thread invokes InsertAudio().
46  base::ThreadChecker insert_thread_checker_;
47
48  DISALLOW_COPY_AND_ASSIGN(AudioEncoder);
49};
50
51}  // namespace cast
52}  // namespace media
53
54#endif  // MEDIA_CAST_AUDIO_SENDER_AUDIO_ENCODER_H_
55