myvtm/Other/libvideoframework/rtp_header_extension/rtp_header_extension_parser.h

#ifndef MODULES_RTP_RTCP_INCLUDE_RTP_HEADER_PARSER_H_
#define MODULES_RTP_RTCP_INCLUDE_RTP_HEADER_PARSER_H_


#include "../rtp_header_extension/rtp_header_extension_map.h"

class RTPHeaderExtensionParser {
 public:
  static RTPHeaderExtensionParser* Create();
  virtual ~RTPHeaderExtensionParser(){}

  // Parses the packet and stores the parsed packet in |header|. Returns true on
  // success, false otherwise.
  // This method is thread-safe in the sense that it can parse multiple packets
  // at once.
  virtual bool Parse(const uint8_t* packet,
                     size_t length,
					 RTPHeaderExtension* header,
					 int *header_length) = 0;

  // Registers an RTP header extension and binds it to |id|.
  virtual bool RegisterRtpHeaderExtension(RTPExtensionType type,
                                          uint8_t id) = 0;

  // Registers an RTP header extension.
  virtual bool RegisterRtpHeaderExtension(RtpExtension extension) = 0;

  // De-registers an RTP header extension.
  virtual bool DeregisterRtpHeaderExtension(RTPExtensionType type) = 0;

  // De-registers an RTP header extension.
  virtual bool DeregisterRtpHeaderExtension(RtpExtension extension) = 0;
};


namespace RtpUtility {

class RTPHeaderExtensionParser {
 public:
  RTPHeaderExtensionParser(const uint8_t* rtpData, size_t rtpDataLength);

  bool Parse(RTPHeaderExtension* header,
             const RtpHeaderExtensionMap* ptrExtensionMap,
             int *header_length);

 private:
  void ParseOneByteExtensionHeader(RTPHeaderExtension* extension,
                                   const RtpHeaderExtensionMap* ptrExtensionMap,
                                   const uint8_t* ptrRTPDataExtensionEnd,
                                   const uint8_t* ptr) const;

  const uint8_t* const _ptrRTPDataBegin;
  const uint8_t* const _ptrRTPDataEnd;
};
}

#endif  // MODULES_RTP_RTCP_INCLUDE_RTP_HEADER_PARSER_H_