jprogrammapsection.cpp
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/***************************************************************************
* Copyright (C) 2005 by Jeff Ferr *
* root@sat *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "Stdafx.h"
#include "jprogrammapsection.h"
namespace jmpeg {
ProgramMapSection::ProgramMapSection():
ProgramSystemInformationSection()
{
}
ProgramMapSection::~ProgramMapSection()
{
}
int ProgramMapSection::GetPrograms(std::vector<ProgramMapSection::Program *> &program_map)
{
if (IsComplete() == false) {
return -1;
}
int program_info_length;
char *program_info = new char[1024];
GetProgramInformation(program_info, &program_info_length);
int number_of_programs = GetSectionLength() - 9 - program_info_length - 4; // section_length - previous_bytes - program_info_length - crc32
if ((number_of_programs <= 0) | ((number_of_programs % 5) != 0)) {
return -1;
}
int stream_type,
reserved1,
elementary_pid,
reserved2,
es_info_length,
k, count = 0;
number_of_programs /= 5;
for (int i=0; i<number_of_programs; i++) {
k = i * 5 + count;
stream_type = (uint16_t)((*(_data + 12 + program_info_length + k))) & 0x000000ff;
reserved1 = (uint16_t)(((*(_data + 13 + program_info_length + k)) >> 5)) & 0x00000007;
elementary_pid = (uint16_t)(((*(_data + 13 + program_info_length + k)) << 8) | (*(_data + 14 + program_info_length + k))) & 0x00001fff;
reserved2 = (uint16_t)(((*(_data + 15 + program_info_length + k)) >> 4)) & 0x0000000f;
es_info_length = (uint16_t)(((*(_data + 15 + program_info_length + k)) << 8) | (*(_data + 16 + program_info_length + k))) & 0x00000fff;
count += es_info_length;
ProgramMapSection::Program *p = new ProgramMapSection::Program();
p->AppendStreamType(stream_type);
p->AppendReserved1(reserved1);
p->AppendElementaryPID(elementary_pid);
p->AppendReserved2(reserved2);
char *es_info = NULL;
if (es_info_length > 0) {
es_info = new char[es_info_length];
memcpy(es_info, (_data + 17), es_info_length);
}
p->AppendElementaryStreamInfo(es_info, es_info_length);
program_map.push_back(p);
}
return 0;
}
uint16_t ProgramMapSection::GetProgramNumber()
{
return GetTansportStreamID();
}
uint16_t ProgramMapSection::GetReserved3()
{
return (uint8_t)((*(_data + 8) >> 5) & 0x00000007);
}
uint16_t ProgramMapSection::GetPCRPID()
{
return (uint16_t)(((*(_data + 8) << 8) | (*(_data + 9))) & 0x00001fff);
}
uint16_t ProgramMapSection::GetReserved4()
{
return (uint8_t)((*(_data + 10) >> 4) & 0x0000000f);
}
void ProgramMapSection::GetProgramInformation(char *data, int *size)
{
*size = (uint16_t)(((*(_data + 10) << 8) | (*(_data + 11))) & 0x00000fff);
if ((void *)data == NULL) {
return;
}
memcpy(data, (_data + 12), *size);
}
}