media/cast/rtp_sender/rtp_sender.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 // This file contains the interface to the cast RTP sender.
   6
   7 #ifndef MEDIA_CAST_RTP_SENDER_RTP_SENDER_H_
   8 #define MEDIA_CAST_RTP_SENDER_RTP_SENDER_H_
   9
  10 #include <map>
  11 #include <set>
  12
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/time/tick_clock.h"
  15 #include "base/time/time.h"
  16 #include "media/cast/cast_config.h"
  17 #include "media/cast/rtp_sender/packet_storage/packet_storage.h"
  18 #include "media/cast/rtp_sender/rtp_packetizer/rtp_packetizer.h"
  19 #include "media/cast/rtp_sender/rtp_packetizer/rtp_packetizer_config.h"
  20
  21 namespace media {
  22 namespace cast {
  23
  24 class PacedPacketSender;
  25 struct RtcpSenderInfo;
  26
  27 // This object is only called from the main cast thread.
  28 // This class handles splitting encoded audio and video frames into packets and
  29 // add an RTP header to each packet. The sent packets are stored until they are
  30 // acknowledged by the remote peer or timed out.
  31 class RtpSender {
  32  public:
  33   RtpSender(base::TickClock* clock,
  34             const AudioSenderConfig* audio_config,
  35             const VideoSenderConfig* video_config,
  36             PacedPacketSender* transport);
  37
  38   ~RtpSender();
  39
  40   // The video_frame objects ownership is handled by the main cast thread.
  41   void IncomingEncodedVideoFrame(const EncodedVideoFrame* video_frame,
  42                                  const base::TimeTicks& capture_time);
  43
  44   // The audio_frame objects ownership is handled by the main cast thread.
  45   void IncomingEncodedAudioFrame(const EncodedAudioFrame* audio_frame,
  46                                  const base::TimeTicks& recorded_time);
  47
  48   void ResendPackets(const MissingFramesAndPacketsMap& missing_packets);
  49
  50   void RtpStatistics(const base::TimeTicks& now, RtcpSenderInfo* sender_info);
  51
  52  private:
  53   void UpdateSequenceNumber(std::vector<uint8>* packet);
  54
  55   base::TickClock* const clock_;  // Not owned by this class.
  56   RtpPacketizerConfig config_;
  57   scoped_ptr<RtpPacketizer> packetizer_;
  58   scoped_ptr<PacketStorage> storage_;
  59   PacedPacketSender* transport_;
  60 };
  61
  62 }  // namespace cast
  63 }  // namespace media
  64
  65 #endif  // MEDIA_CAST_RTP_SENDER_RTP_SENDER_H_