media/cast/audio_sender/audio_encoder.h

   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
  15 namespace base {
  16 class TimeTicks;
  17 }
  18
  19 namespace media {
  20 namespace cast {
  21
  22 class AudioEncoder {
  23  public:
  24   typedef base::Callback<void(scoped_ptr<transport::EncodedAudioFrame>,
  25                               const base::TimeTicks&)> 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_