typedef struct TS_PAT_Program  
{  
    unsigned program_number   :  16;  //节目号  
    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  
}TS_PAT_Program  

typedef struct TS_PAT  
{  
    unsigned table_id                     : 8; //固定为0x00 ，标志是该表是PAT表  
    unsigned section_syntax_indicator     : 1; //段语法标志位，固定为1  
    unsigned zero                         : 1; //0  
    unsigned reserved_1                   : 2; // 保留位  
     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  
    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  
    unsigned reserved_2                   : 2;// 保留位  
    unsigned version_number               : 5; //范围0-31，表示PAT的版本号  
    unsigned current_next_indicator       : 1; //发送的PAT是当前有效还是下一个PAT有效  
    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  
    unsigned last_section_number          : 8;  //最后一个分段的号码  
   
    std::vector<TS_PAT_Program> program;  
    unsigned reserved_3                    : 3; // 保留位  
    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  
    unsigned CRC_32                        : 32;  //CRC32校验码  
} TS_PAT; 

HRESULT CTS_Stream_Parse::adjust_PAT_table( TS_PAT * packet, unsigned char * buffer)  
{  
    packet->table_id                    = buffer[0];  
    packet->section_syntax_indicator    = buffer[1] >> 7;  
    packet->zero                        = buffer[1] >> 6 & 0x1;  
    packet->reserved_1                  = buffer[1] >> 4 & 0x3;  
    packet->section_length              = (buffer[1] & 0x0F) << 8 | buffer[2];   
   
    packet->transport_stream_id           = 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];   
  
    int len = 0;  
    len = 3 + packet->section_length;  
    packet->CRC_32                        = (buffer[len-4] & 0x000000FF) << 24  
  | (buffer[len-3] & 0x000000FF) << 16  
  | (buffer[len-2] & 0x000000FF) << 8   
  | (buffer[len-1] & 0x000000FF);   
   
    int n = 0;  
    for ( n = 0; n < packet->section_length - 12; n += 4 )  
    {  
        unsigned  program_num = buffer[8 + n ] << 8 | buffer[9 + n ];    
        packet->reserved_3           = buffer[10 + n ] >> 5;   
    
        packet->network_PID = 0x00;  
        if ( program_num == 0x00)  
       {    
            packet->network_PID = (buffer[10 + n ] & 0x1F) << 8 | buffer[11 + n ];  
  
            TS_network_Pid = packet->network_PID; //记录该TS流的网络PID  
  
             TRACE(" packet->network_PID %0x /n/n", packet->network_PID );  
        }  
        else  
        {  
           TS_PAT_Program PAT_program;  
           PAT_program.program_map_PID = (buffer[10 + n] & 0x1F) << 8 | buffer[11 + n];  
           PAT_program.program_number = program_num;  
           packet->program.push_back( PAT_program );  
           TS_program.push_back( PAT_program );//向全局PAT节目数组中添加PAT节目信息       
        }           
    }  
    return 0;  
}  

int Video_PID=0x07e5,Audio_PID=0x07e6;  
void Process_Packet(unsigned char*buff)  
{ int I; int PID=GETPID(buff);  
  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  
  else{                                     // 这里buff+4 意味着从Packet Header之后进行解析（包头占4个字节）  
    ……  
  }  
}  

<span style="font-size:14px;">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;   
</span>  

//PMT 表结构体  
typedef struct TS_PMT  
{  
    unsigned table_id                        : 8; //固定为0x02, 表示PMT表  
     unsigned section_syntax_indicator        : 1; //固定为0x01  
    unsigned zero                            : 1; //0x01  
    unsigned reserved_1                      : 2; //0x03  
    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。  
     unsigned program_number                    : 16;// 指出该节目对应于可应用的Program map PID  
    unsigned reserved_2                        : 2; //0x03  
    unsigned version_number                    : 5; //指出TS流中Program map section的版本号  
     unsigned current_next_indicator            : 1; //当该位置1时，当前传送的Program map section可用；  
                                                     //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。  
     unsigned section_number                    : 8; //固定为0x00  
    unsigned last_section_number            : 8; //固定为0x00  
    unsigned reserved_3                        : 3; //0x07  
    unsigned PCR_PID                        : 13; //指明TS包的PID值，该TS包含有PCR域，  
            //该PCR值对应于由节目号指定的对应节目。  
            //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。  
     unsigned reserved_4                        : 4; //预留为0x0F  
    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。  
      
     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  
     unsigned reserved_5                        : 3; //0x07  
    unsigned reserved_6                        : 4; //0x0F  
    unsigned CRC_32                            : 32;   
} TS_PMT;  

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;  
}