text: // Copyright 2013 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 MEDIA_CAST_CAST_SENDER_IMPL_H_
  #define MEDIA_CAST_CAST_SENDER_IMPL_H_
  
  #include "base/memory/ref_counted.h"
  #include "base/memory/scoped_ptr.h"
  #include "media/cast/cast_config.h"
  #include "media/cast/cast_defines.h"
  #include "media/cast/cast_environment.h"
  #include "media/cast/cast_sender.h"
  #include "media/cast/sender/audio_sender.h"
  #include "media/cast/sender/video_sender.h"
  
  namespace media {
  class VideoFrame;
  
  namespace cast {
  class AudioSender;
  class VideoSender;
  
  // This class combines all required sending objects such as the audio and video
  // senders, pacer, packet receiver and frame input.
  class CastSenderImpl : public CastSender {
   public:
    CastSenderImpl(scoped_refptr<CastEnvironment> cast_environment,
                   CastTransportSender* const transport_sender);
  
    void InitializeAudio(
        const AudioSenderConfig& audio_config,
        const CastInitializationCallback& cast_initialization_cb) override;
    void InitializeVideo(
        const VideoSenderConfig& video_config,
        const CastInitializationCallback& cast_initialization_cb,
        const CreateVideoEncodeAcceleratorCallback& create_vea_cb,
        const CreateVideoEncodeMemoryCallback& create_video_encode_mem_cb)
        override;
  
    void SetTargetPlayoutDelay(base::TimeDelta new_target_playout_delay) override;
  
    ~CastSenderImpl() override;
  
    scoped_refptr<AudioFrameInput> audio_frame_input() override;
    scoped_refptr<VideoFrameInput> video_frame_input() override;
  
   private:
    void ReceivedPacket(scoped_ptr<Packet> packet);
    void OnVideoInitialized(
        const CastInitializationCallback& initialization_cb,
        media::cast::CastInitializationStatus result);
  
    CastInitializationCallback initialization_callback_;
    scoped_ptr<AudioSender> audio_sender_;
    scoped_ptr<VideoSender> video_sender_;
    scoped_refptr<AudioFrameInput> audio_frame_input_;
    scoped_refptr<VideoFrameInput> video_frame_input_;
    scoped_refptr<CastEnvironment> cast_environment_;
    // The transport sender is owned by the owner of the CastSender, and should be
    // valid throughout the lifetime of the CastSender.
    CastTransportSender* const transport_sender_;
  
    // NOTE: Weak pointers must be invalidated before all other member variables.
    base::WeakPtrFactory<CastSenderImpl> weak_factory_;
  
    DISALLOW_COPY_AND_ASSIGN(CastSenderImpl);
  };
  
  }  // namespace cast
  }  // namespace media
  
  #endif  // MEDIA_CAST_CAST_SENDER_IMPL_H_
  