flv_tag.h

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#pragma once
#include "socket.h"
#include "dtsc.h"
#include "json.h"
#include "amf.h"
#include <string>


//forward declaration of RTMPStream::Chunk to avoid circular dependencies.
namespace RTMPStream {
  class Chunk;
}

namespace FLV {
  //variables
  extern char Header[13]; 
  extern bool Parse_Error; 
  extern std::string Error_Str; 

  //functions
  bool check_header(char * header); 
  bool is_header(char * header); 

  class Tag {
    public:
      int len; 
      bool isKeyframe; 
      char * data; 
      bool needsInitData(); 
      bool isInitData(); 
      const char * getAudioCodec(); 
      const char * getVideoCodec(); 
      std::string tagType(); 
      unsigned int tagTime();
      void tagTime(unsigned int T);
      int offset();
      void offset(int o);
      Tag(); 
      Tag(const Tag & O); 
      Tag & operator=(const Tag & O); 
      Tag(const RTMPStream::Chunk & O); 
      ~Tag(); 
      //loader functions
      bool ChunkLoader(const RTMPStream::Chunk & O);
      bool DTSCLoader(DTSC::Packet & packData, DTSC::Track & track);
      bool DTSCVideoInit(DTSC::Track & video);
      bool DTSCAudioInit(DTSC::Track & audio);
      bool DTSCMetaInit(DTSC::Meta & M, std::set<long unsigned int> & selTracks);
      JSON::Value toJSON(DTSC::Meta & metadata, AMF::Object & amf_storage, unsigned int reTrack = 0);
      bool MemLoader(char * D, unsigned int S, unsigned int & P);
      bool FileLoader(FILE * f);
      unsigned int getTrackID();
      char * getData();
      unsigned int getDataLen();
    protected:
      int buf; 
      bool done; 
      unsigned int sofar; 
      void setLen();
      bool checkBufferSize();
      //loader helper functions
      bool MemReadUntil(char * buffer, unsigned int count, unsigned int & sofar, char * D, unsigned int S, unsigned int & P);
      bool FileReadUntil(char * buffer, unsigned int count, unsigned int & sofar, FILE * f);
      //JSON writer helpers
      void Meta_Put(JSON::Value & meta, std::string cat, std::string elem, std::string val);
      void Meta_Put(JSON::Value & meta, std::string cat, std::string elem, uint64_t val);
      bool Meta_Has(JSON::Value & meta, std::string cat, std::string elem);
  };
//Tag

}//FLV namespace