Line data    Source code

       1             : /*
       2             :  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
       3             :  *
       4             :  *  Use of this source code is governed by a BSD-style license
       5             :  *  that can be found in the LICENSE file in the root of the source
       6             :  *  tree. An additional intellectual property rights grant can be found
       7             :  *  in the file PATENTS.  All contributing project authors may
       8             :  *  be found in the AUTHORS file in the root of the source tree.
       9             :  */
      10             : 
      11             : #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_SDES_H_
      12             : #define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_SDES_H_
      13             : 
      14             : #include <string>
      15             : #include <vector>
      16             : 
      17             : #include "webrtc/base/basictypes.h"
      18             : #include "webrtc/base/constructormagic.h"
      19             : #include "webrtc/modules/rtp_rtcp/source/rtcp_packet.h"
      20             : 
      21             : namespace webrtc {
      22             : namespace rtcp {
      23             : class CommonHeader;
      24             : // Source Description (SDES) (RFC 3550).
      25             : class Sdes : public RtcpPacket {
      26             :  public:
      27           0 :   struct Chunk {
      28             :     uint32_t ssrc;
      29             :     std::string cname;
      30             :   };
      31             :   static constexpr uint8_t kPacketType = 202;
      32             : 
      33             :   Sdes();
      34             :   ~Sdes() override;
      35             : 
      36             :   // Parse assumes header is already parsed and validated.
      37             :   bool Parse(const CommonHeader& packet);
      38             : 
      39             :   bool AddCName(uint32_t ssrc, std::string cname);
      40             : 
      41           0 :   const std::vector<Chunk>& chunks() const { return chunks_; }
      42             : 
      43           0 :   size_t BlockLength() const override { return block_length_; }
      44             : 
      45             :  protected:
      46             :   bool Create(uint8_t* packet,
      47             :               size_t* index,
      48             :               size_t max_length,
      49             :               RtcpPacket::PacketReadyCallback* callback) const override;
      50             : 
      51             :  private:
      52             :   static const size_t kMaxNumberOfChunks = 0x1f;
      53             : 
      54             :   std::vector<Chunk> chunks_;
      55             :   size_t block_length_;
      56             : 
      57             :   RTC_DISALLOW_COPY_AND_ASSIGN(Sdes);
      58             : };
      59             : }  // namespace rtcp
      60             : }  // namespace webrtc
      61             : #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_SDES_H_