jprogramsysteminformationsection.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 "jprogramsysteminformationsection.h"
#include "jnullpointerexception.h"
namespace jmpeg {
ProgramSystemInformationSection::ProgramSystemInformationSection()
{
_data_size = 1024;
_data_index = 0;
_is_complete = false;
_has_failed = false;
_data = new uint8_t[_data_size];
}
ProgramSystemInformationSection::~ProgramSystemInformationSection()
{
}
bool ProgramSystemInformationSection::IsComplete()
{
return _is_complete;
}
bool ProgramSystemInformationSection::HasFailed()
{
return _has_failed;
}
void ProgramSystemInformationSection::Clear()
{
_data_index = 0;
_is_complete = false;
_has_failed = false;
memset(_data, 0, _data_size);
}
void ProgramSystemInformationSection::Push(uint8_t *buffer, uint32_t size)
{
if (buffer == NULL) {
throw jcommon::NullPointerException("Push a null pointer");
}
if (size > (uint32_t)(1024 - _data_index - 3)) {
_has_failed = true;
// throw jcommon::OutOfBoundsException("Overflow index of section");
}
memcpy((_data + _data_index), buffer, size);
_data_index += size;
if (_data_index >= (GetSectionLength() + 3)) {
_is_complete = true;
}
}
void ProgramSystemInformationSection::GetPayload(uint8_t *buffer, uint32_t *size)
{
if (buffer == NULL) {
throw jcommon::NullPointerException("Buffer is a null pointer");
}
memcpy(buffer, _data, _data_index);
*size = _data_index;
}
uint8_t ProgramSystemInformationSection::GetTableID()
{
return (uint8_t)((*(_data + 0) >> 0) & 0x000000ff);
}
uint8_t ProgramSystemInformationSection::GetSectionSyntaxIndicator()
{
return (uint8_t)((*(_data + 1) >> 7) & 0x00000001);
}
uint8_t ProgramSystemInformationSection::GetZero()
{
return (uint8_t)((*(_data + 1) >> 6) & 0x00000001);
}
uint8_t ProgramSystemInformationSection::GetReserved1()
{
return (uint8_t)((*(_data + 1) >> 4) & 0x00000003);
}
uint16_t ProgramSystemInformationSection::GetSectionLength()
{
return (uint16_t)(((*(_data + 1) << 8) | (*(_data + 2))) & 0x00000fff);
}
uint16_t ProgramSystemInformationSection::GetTansportStreamID()
{
return (uint16_t)(((*(_data + 3) << 8) | (*(_data + 4))) & 0x00000fff);
}
uint8_t ProgramSystemInformationSection::GetReserved2()
{
return (uint8_t)((*(_data + 5) >> 6) & 0x00000003);
}
uint8_t ProgramSystemInformationSection::GetVersionNumber()
{
return (uint8_t)((*(_data + 5) >> 1) & 0x0000001f);
}
uint8_t ProgramSystemInformationSection::GetCurrentNextIndicator()
{
return (uint8_t)((*(_data + 5) >> 0) & 0x00000001);
}
uint8_t ProgramSystemInformationSection::GetSectionNumber()
{
return (uint8_t)((*(_data + 6) >> 0) & 0x000000ff);
}
uint8_t ProgramSystemInformationSection::GetLastSectionNumber()
{
return (uint8_t)((*(_data + 7) >> 0) & 0x000000ff);
}
}