2023年12月29日发(作者：)

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;

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__type = buffer[pos];

packet->reserved_5 = buffer[pos+1] >> 5;

pmt_tary_PID = ((buffer[pos+1] << 8) | buffer[pos+2]) & 0x1FFF;

packet->reserved_6 = buffer[pos+3] >> 4;

pmt__info_length = (buffer[pos+3] & 0x0F) << 8 | buffer[pos+4];

pmt_ptor = 0x00;

if (pmt__info_length != 0) {

pmt_ptor = buffer[pos + 5];

for (int len = 2; len <= pmt__info_length; len ++) {

pmt_ptor = pmt_ptor<< 8 | buffer[pos + 4 + len];

}

pos += pmt__info_length;

}

pos += 5;

packet->PMT__back( pmt_stream );

TS_Stream__back( pmt_stream );

}

return 0;

}