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      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_RTCP_RTCP_RECEIVER_H_
      6 #define MEDIA_CAST_RTCP_RTCP_RECEIVER_H_
      7 
      8 #include "media/cast/net/cast_net_defines.h"
      9 #include "media/cast/rtcp/rtcp.h"
     10 #include "media/cast/rtcp/rtcp_defines.h"
     11 #include "media/cast/rtcp/rtcp_utility.h"
     12 
     13 namespace media {
     14 namespace cast {
     15 
     16 class RtcpReceiverFeedback {
     17  public:
     18   virtual void OnReceivedSenderReport(
     19       const RtcpSenderInfo& remote_sender_info) = 0;
     20 
     21   virtual void OnReceiverReferenceTimeReport(
     22       const RtcpReceiverReferenceTimeReport& remote_time_report) = 0;
     23 
     24   virtual void OnReceivedSendReportRequest() = 0;
     25 
     26   virtual void OnReceivedReceiverLog(
     27       const RtcpReceiverLogMessage& receiver_log) = 0;
     28 
     29   virtual void OnReceivedSenderLog(
     30       const RtcpSenderLogMessage& sender_log) = 0;
     31 
     32   virtual ~RtcpReceiverFeedback() {}
     33 };
     34 
     35 class RtcpRttFeedback {
     36  public:
     37   virtual void OnReceivedDelaySinceLastReport(
     38       uint32 receivers_ssrc,
     39       uint32 last_report,
     40       uint32 delay_since_last_report) = 0;
     41 
     42   virtual ~RtcpRttFeedback() {}
     43 };
     44 
     45 class RtcpReceiver {
     46  public:
     47   explicit RtcpReceiver(scoped_refptr<CastEnvironment> cast_environment,
     48                         RtcpSenderFeedback* sender_feedback,
     49                         RtcpReceiverFeedback* receiver_feedback,
     50                         RtcpRttFeedback* rtt_feedback,
     51                         uint32 local_ssrc);
     52   virtual ~RtcpReceiver();
     53 
     54   void SetRemoteSSRC(uint32 ssrc);
     55 
     56   void IncomingRtcpPacket(RtcpParser* rtcp_parser);
     57 
     58  private:
     59   void HandleSenderReport(RtcpParser* rtcp_parser);
     60 
     61   void HandleReceiverReport(RtcpParser* rtcp_parser);
     62 
     63   void HandleReportBlock(const RtcpField* rtcp_field,
     64                          uint32 remote_ssrc);
     65 
     66   void HandleSDES(RtcpParser* rtcp_parser);
     67   void HandleSDESChunk(RtcpParser* rtcp_parser);
     68 
     69   void HandleBYE(RtcpParser* rtcp_parser);
     70 
     71   void HandleXr(RtcpParser* rtcp_parser);
     72   void HandleRrtr(RtcpParser* rtcp_parser, uint32 remote_ssrc);
     73   void HandleDlrr(RtcpParser* rtcp_parser);
     74 
     75   //  Generic RTP Feedback.
     76   void HandleNACK(RtcpParser* rtcp_parser);
     77   void HandleNACKItem(const RtcpField* rtcp_field,
     78                       std::list<uint16>* nack_sequence_numbers);
     79 
     80   void HandleSendReportRequest(RtcpParser* rtcp_parser);
     81 
     82   // Payload-specific.
     83   void HandlePLI(RtcpParser* rtcp_parser);
     84 
     85   void HandleSLI(RtcpParser* rtcp_parser);
     86   void HandleSLIItem(RtcpField* rtcpPacket);
     87 
     88   void HandleRpsi(RtcpParser* rtcp_parser);
     89 
     90   void HandleFIR(RtcpParser* rtcp_parser);
     91   void HandleFIRItem(const RtcpField* rtcp_field);
     92 
     93   void HandlePayloadSpecificApp(RtcpParser* rtcp_parser);
     94   void HandlePayloadSpecificRembItem(RtcpParser* rtcp_parser);
     95   void HandlePayloadSpecificCastItem(RtcpParser* rtcp_parser);
     96   void HandlePayloadSpecificCastNackItem(
     97       const RtcpField* rtcp_field,
     98       MissingFramesAndPacketsMap* missing_frames_and_packets);
     99 
    100   void HandleApplicationSpecificCastReceiverLog(RtcpParser* rtcp_parser);
    101   void HandleApplicationSpecificCastSenderLog(RtcpParser* rtcp_parser);
    102   void HandleApplicationSpecificCastReceiverEventLog(
    103       RtcpParser* rtcp_parser,
    104       RtcpReceiverEventLogMessages* event_log_messages);
    105 
    106   const uint32 ssrc_;
    107   uint32 remote_ssrc_;
    108 
    109   // Not owned by this class.
    110   RtcpSenderFeedback* const sender_feedback_;
    111   RtcpReceiverFeedback* const receiver_feedback_;
    112   RtcpRttFeedback* const rtt_feedback_;
    113   scoped_refptr<CastEnvironment> cast_environment_;
    114 
    115   FrameIdWrapHelper ack_frame_id_wrap_helper_;
    116 
    117   DISALLOW_COPY_AND_ASSIGN(RtcpReceiver);
    118 };
    119 
    120 }  // namespace cast
    121 }  // namespace media
    122 
    123 #endif  // MEDIA_CAST_RTCP_RTCP_RECEIVER_H_
    124