media/cast/sender/audio_encoder.h

   1 // Copyright 2014 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_SENDER_AUDIO_ENCODER_H_
   6 #define MEDIA_CAST_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_environment.h"
  13
  14 namespace base {
  15 class TimeTicks;
  16 }
  17
  18 namespace media {
  19 namespace cast {
  20
  21 class AudioEncoder {
  22  public:
  23   typedef base::Callback<void(scoped_ptr<EncodedFrame>)>
  24       FrameEncodedCallback;
  25
  26   AudioEncoder(const scoped_refptr<CastEnvironment>& cast_environment,
  27                int num_channels,
  28                int sampling_rate,
  29                int bitrate,
  30                Codec codec,
  31                const FrameEncodedCallback& frame_encoded_callback);
  32   virtual ~AudioEncoder();
  33
  34   CastInitializationStatus InitializationResult() const;
  35
  36   void InsertAudio(scoped_ptr<AudioBus> audio_bus,
  37                    const base::TimeTicks& recorded_time);
  38
  39  private:
  40   class ImplBase;
  41   class OpusImpl;
  42   class Pcm16Impl;
  43
  44   const scoped_refptr<CastEnvironment> cast_environment_;
  45   scoped_refptr<ImplBase> impl_;
  46
  47   // Used to ensure only one thread invokes InsertAudio().
  48   base::ThreadChecker insert_thread_checker_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(AudioEncoder);
  51 };
  52
  53 }  // namespace cast
  54 }  // namespace media
  55
  56 #endif  // MEDIA_CAST_SENDER_AUDIO_ENCODER_H_