1 typedef struct TS_PAT_Program  2 {  3     unsigned program_number   :  16;  //节目号  4     unsigned program_map_PID :  13; // 节目映射表的PID，节目号大于0时对应的PID，每个节目对应一个  5 }TS_PAT_Program 

 1 typedef struct TS_PAT   2 {   3     unsigned table_id                     : 8; //固定为0x00 ，标志是该表是PAT表   4     unsigned section_syntax_indicator     : 1; //段语法标志位，固定为1   5     unsigned zero                         : 1; //0   6     unsigned reserved_1                   : 2; // 保留位   7      unsigned section_length               : 12; //表示从下一个字段开始到CRC32(含)之间有用的字节数   8     unsigned transport_stream_id          : 16; //该传输流的ID，区别于一个网络中其它多路复用的流   9     unsigned reserved_2                   : 2;// 保留位  10     unsigned version_number               : 5; //范围0-31，表示PAT的版本号  11     unsigned current_next_indicator       : 1; //发送的PAT是当前有效还是下一个PAT有效  12     unsigned section_number               : 8; //分段的号码。PAT可能分为多段传输，第一段为00，以后每个分段加1，最多可能有256个分段  13     unsigned last_section_number          : 8;  //最后一个分段的号码  14    15     std::vector<TS_PAT_Program> program;  16     unsigned reserved_3                    : 3; // 保留位  17     unsigned network_PID                    : 13; //网络信息表（NIT）的PID,节目号为0时对应的PID为network_PID  18     unsigned CRC_32                        : 32;  //CRC32校验码  19 } TS_PAT;

 1 HRESULT CTS_Stream_Parse::adjust_PAT_table( TS_PAT * packet, unsigned char * buffer)   2 {   3     packet->table_id                    = buffer[0];   4     packet->section_syntax_indicator    = buffer[1] >> 7;   5     packet->zero                        = buffer[1] >> 6 & 0x1;   6     packet->reserved_1                  = buffer[1] >> 4 & 0x3;   7     packet->section_length              = (buffer[1] & 0x0F) << 8 | buffer[2];    8     9     packet->transport_stream_id           = buffer[3] << 8 | buffer[4];  10    11     packet->reserved_2                    = buffer[5] >> 6;  12     packet->version_number                = buffer[5] >> 1 &  0x1F;  13     packet->current_next_indicator        = (buffer[5] << 7) >> 7;  14     packet->section_number                = buffer[6];  15     packet->last_section_number           = buffer[7];   16   17     int len = 0;  18     len = 3 + packet->section_length;  19     packet->CRC_32                        = (buffer[len-4] & 0x000000FF) << 24  20   | (buffer[len-3] & 0x000000FF) << 16  21   | (buffer[len-2] & 0x000000FF) << 8   22   | (buffer[len-1] & 0x000000FF);   23    24     int n = 0;  25     for ( n = 0; n < packet->section_length - 12; n += 4 )  26     {  27         unsigned  program_num = buffer[8 + n ] << 8 | buffer[9 + n ];    28         packet->reserved_3           = buffer[10 + n ] >> 5;   29     30         packet->network_PID = 0x00;  31         if ( program_num == 0x00)  32        {    33             packet->network_PID = (buffer[10 + n ] & 0x1F) << 8 | buffer[11 + n ];  34   35             TS_network_Pid = packet->network_PID; //记录该TS流的网络PID  36   37              TRACE(" packet->network_PID %0x /n/n", packet->network_PID );  38         }  39         else  40         {  41            TS_PAT_Program PAT_program;  42            PAT_program.program_map_PID = (buffer[10 + n] & 0x1F) << 8 | buffer[11 + n];  43            PAT_program.program_number = program_num;  44            packet->program.push_back( PAT_program );  45            TS_program.push_back( PAT_program );//向全局PAT节目数组中添加PAT节目信息       46         }           47     }  48     return 0;  49 }  

1 int Video_PID=0x07e5,Audio_PID=0x07e6;  2 void Process_Packet(unsigned char*buff)  3 { int I; int PID=GETPID(buff);  4   if(PID==0x0000) { Process_PAT(buff+4); }  // 如果PID为0x0000,则该Packet Data为PAT信息，因此调用处理PAT表的函数  5   else{                                     // 这里buff+4 意味着从Packet Header之后进行解析（包头占4个字节）  6     ……  7   }  8 }  

//PMT 表定义typedef struct TS_PMT_Stream  {   unsigned stream_type                       : 8; //指示特定PID的节目元素包的类型。该处PID由elementary PID指定   unsigned elementary_PID                    : 13; //该域指示TS包的PID值。这些TS包含有相关的节目元素   unsigned ES_info_length                    : 12; //前两位bit为00。该域指示跟随其后的描述相关节目元素的byte数   unsigned descriptor;  }TS_PMT_Stream;  

 1 //PMT 表结构体   2 typedef struct TS_PMT   3 {   4     unsigned table_id                        : 8; //固定为0x02, 表示PMT表   5      unsigned section_syntax_indicator        : 1; //固定为0x01   6     unsigned zero                            : 1; //0x01   7     unsigned reserved_1                      : 2; //0x03   8     unsigned section_length                  : 12;//首先两位bit置为00，它指示段的byte数，由段长度域开始，包含CRC。   9      unsigned program_number                    : 16;// 指出该节目对应于可应用的Program map PID  10     unsigned reserved_2                        : 2; //0x03  11     unsigned version_number                    : 5; //指出TS流中Program map section的版本号  12      unsigned current_next_indicator            : 1; //当该位置1时，当前传送的Program map section可用；  13                                                      //当该位置0时，指示当前传送的Program map section不可用，下一个TS流的Program map section有效。  14      unsigned section_number                    : 8; //固定为0x00  15     unsigned last_section_number            : 8; //固定为0x00  16     unsigned reserved_3                        : 3; //0x07  17     unsigned PCR_PID                        : 13; //指明TS包的PID值，该TS包含有PCR域，  18             //该PCR值对应于由节目号指定的对应节目。  19             //如果对于私有数据流的节目定义与PCR无关，这个域的值将为0x1FFF。  20      unsigned reserved_4                        : 4; //预留为0x0F  21     unsigned program_info_length            : 12; //前两位bit为00。该域指出跟随其后对节目信息的描述的byte数。  22       23      std::vector<TS_PMT_Stream> PMT_Stream;  //每个元素包含8位, 指示特定PID的节目元素包的类型。该处PID由elementary PID指定  24      unsigned reserved_5                        : 3; //0x07  25     unsigned reserved_6                        : 4; //0x0F  26     unsigned CRC_32                            : 32;   27 } TS_PMT;  

//PMT 表的解析HRESULT CTS_Stream_Parse::adjust_PMT_table ( TS_PMT * packet, unsigned char * buffer )  {       packet->table_id                            = buffer[0];      packet->section_syntax_indicator            = buffer[1] >> 7;      packet->zero                                = buffer[1] >> 6 & 0x01;       packet->reserved_1                            = buffer[1] >> 4 & 0x03;      packet->section_length                        = (buffer[1] & 0x0F) << 8 | buffer[2];          packet->program_number                        = buffer[3] << 8 | buffer[4];      packet->reserved_2                            = buffer[5] >> 6;      packet->version_number                        = buffer[5] >> 1 & 0x1F;      packet->current_next_indicator                = (buffer[5] << 7) >> 7;      packet->section_number                        = buffer[6];      packet->last_section_number                    = buffer[7];      packet->reserved_3                            = buffer[8] >> 5;      packet->PCR_PID                                = ((buffer[8] << 8) | buffer[9]) & 0x1FFF;     PCRID = packet->PCR_PID;        packet->reserved_4                            = buffer[10] >> 4;      packet->program_info_length                    = (buffer[10] & 0x0F) << 8 | buffer[11];       // Get CRC_32   int len = 0;      len = packet->section_length + 3;          packet->CRC_32                = (buffer[len-4] & 0x000000FF) << 24    | (buffer[len-3] & 0x000000FF) << 16    | (buffer[len-2] & 0x000000FF) << 8    | (buffer[len-1] & 0x000000FF);      int pos = 12;      // program info descriptor      if ( packet->program_info_length != 0 )          pos += packet->program_info_length;          // Get stream type and PID          for ( ; pos <= (packet->section_length + 2 ) -  4; )      {    TS_PMT_Stream pmt_stream;    pmt_stream.stream_type =  buffer[pos];    packet->reserved_5  =   buffer[pos+1] >> 5;    pmt_stream.elementary_PID =  ((buffer[pos+1] << 8) | buffer[pos+2]) & 0x1FFF;    packet->reserved_6     =   buffer[pos+3] >> 4;    pmt_stream.ES_info_length =   (buffer[pos+3] & 0x0F) << 8 | buffer[pos+4];        pmt_stream.descriptor = 0x00;    if (pmt_stream.ES_info_length != 0)    {     pmt_stream.descriptor = buffer[pos + 5];          for( int len = 2; len <= pmt_stream.ES_info_length; len ++ )     {      pmt_stream.descriptor = pmt_stream.descriptor<< 8 | buffer[pos + 4 + len];     }     pos += pmt_stream.ES_info_length;    }    pos += 5;    packet->PMT_Stream.push_back( pmt_stream );    TS_Stream_type.push_back( pmt_stream );      }   return 0;  } 

 1 int Video_PID=0x07e5,Audio_PID=0x07e6;   2 void Process_Packet(unsigned char*buff)   3 {    4   int i; int PID=GETPID(buff);   5   if(PID==0x0000) { Process_PAT(buff+4); }              //PAT表的PID为0x0000   6   else if(PID==Video_PID) { SaveToVideoBuffer(buff+4); }  //PID指示该数据包为视频包   7   else if(PID==Audio_PID) { SaveToAudioBuffer(buff+4); }  //PID指示该数据包为音频包   8   else{                               // buff+4 意味着要除去buff前4个字节（即包头）   9   for( i=0;i<64;i++)  10   { if(PID==pmt[i].pmt_pid) { Process_PMT(buff+4); Break; }  11 } } }