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#include "ABIFilter.h"
CABIFilter::CABIFilter()
{
for(int index = 0; index < 256; index++)
{
m_filters[index] = NULL;
}
}
//-----------------------------------------------------------------------------
CABIFilter::~CABIFilter()
{
for(int index = 0; index < 256; index++)
{
if(m_filters[index] != NULL)
{
delete m_filters[index];
m_filters[index] = NULL;
}
}
}
//-----------------------------------------------------------------------------
void CABIFilter::AddIntervalFilter(Bus bus, unsigned short handle, unsigned int min, unsigned int max)
{
int index = (int) bus;
if (m_filters[index] == NULL)
{
m_filters[index] = new CIdFilter();
}
m_filters[index]->AddIntervalFilter(handle, min, max);
}
//-----------------------------------------------------------------------------
void CABIFilter::AddMaskedFilter(Bus bus, unsigned short handle, unsigned int id, unsigned int mask)
{
int index = (int)bus;
if (m_filters[index] == NULL)
{
m_filters[index] = new CIdFilter();
}
m_filters[index]->AddMaskedFilter(handle, id, mask);
}
//-----------------------------------------------------------------------------
void CABIFilter::RemoveFilter(unsigned short handle)
{
for (int index = 0; index < 256; index++)
{
if (m_filters[index] != NULL)
{
m_filters[index]->RemoveFilter(handle);
}
}
}
//-----------------------------------------------------------------------------
bool CABIFilter::Match(Bus bus, unsigned int id)
{
int index = (int)bus;
CIdFilter* filter = m_filters[index];
if (filter == NULL)
{
//if no filters are added all messages will be delivered.
return true;
}
return filter->Match(id);
}
//-----------------------------------------------------------------------------
IntervalIdFilterEntry::IntervalIdFilterEntry(unsigned short handle, unsigned int min, unsigned int max) :
m_handle(handle),
m_min(min),
m_max(max)
{
}
unsigned short IntervalIdFilterEntry::Handle()
{
return m_handle;
}
//-----------------------------------------------------------------------------
bool IntervalIdFilterEntry::Match(unsigned int id)
{
return ((m_min <= id) && (id <= m_max));
}
//-----------------------------------------------------------------------------
MaskedIdFilterEntry::MaskedIdFilterEntry(unsigned short handle, unsigned int id, unsigned int mask) :
m_handle(handle),
m_id(id),
m_mask(mask)
{
}
//-----------------------------------------------------------------------------
unsigned short MaskedIdFilterEntry::Handle()
{
return m_handle;
}
//-----------------------------------------------------------------------------
bool MaskedIdFilterEntry::Match(unsigned int id)
{
return ((id & m_mask) == (m_id & m_mask));
}
//-----------------------------------------------------------------------------
CIdFilter::CIdFilter() :
m_filters()
{
::InitializeCriticalSection(&m_criticalSection);
}
//-----------------------------------------------------------------------------
CIdFilter::~CIdFilter()
{
::DeleteCriticalSection(&m_criticalSection);
}
//-----------------------------------------------------------------------------
void CIdFilter::AddIntervalFilter(unsigned short handle, unsigned int min, unsigned int max)
{
IntervalIdFilterEntry* filter = new IntervalIdFilterEntry(handle, min, max);
m_filters.push_back(filter);
}
//-----------------------------------------------------------------------------
void CIdFilter::AddMaskedFilter(unsigned short handle, unsigned int id, unsigned int mask)
{
MaskedIdFilterEntry* filter = new MaskedIdFilterEntry(handle, id, mask);
m_filters.push_back(filter);
}
//-----------------------------------------------------------------------------
void CIdFilter::RemoveFilter(unsigned short handle)
{
::EnterCriticalSection(&m_criticalSection);
for (unsigned int index = 0; index < m_filters.size(); index++)
{
IFilterEntry* filter = m_filters[index];
if (filter->Handle() == handle)
{
m_filters.erase (m_filters.begin() + index);
delete filter;
break;
}
}
::LeaveCriticalSection(&m_criticalSection);
}
//-----------------------------------------------------------------------------
bool CIdFilter::Match(unsigned int id)
{
//TODO: PORT this unix ("for each" does not exist)
#if 0
::EnterCriticalSection(&m_criticalSection);
bool ret = false;
for each (IFilterEntry* filterEntry in m_filters)
{
if (filterEntry->Match(id))
{
ret = true;
break;
}
}
::LeaveCriticalSection(&m_criticalSection);
return ret;
#else
return true;
#endif
}
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