Leaked source code of windows server 2003
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/////////////////////////////////////////////////////////////////////////////////////
// ChannelTuneRequestimpl.h : implementation helper template for component type interface
// Copyright (c) Microsoft Corporation 1999.
#ifndef CHANNELTUNEREQUESTIMPL_H
#define CHANNELTUNEREQUESTIMPL_H
#include <tune.h>
#include "tunerequestimpl.h"
namespace BDATuningModel {
template<class T,
class MostDerived = IChannelTuneRequest,
LPCGUID iid = &__uuidof(MostDerived),
LPCGUID LibID = &LIBID_TunerLib,
WORD wMajor = 1,
WORD wMinor = 0,
class tihclass = CComTypeInfoHolder
> class ATL_NO_VTABLE IChannelTuneRequestImpl :
public ITuneRequestImpl<T, MostDerived, iid, LibID, wMajor, wMinor, tihclass>
{
// IChannelTuneRequest
public:
typedef ITuneRequestImpl<T, MostDerived, iid, LibID, wMajor, wMinor, tihclass> basetype;
IChannelTuneRequestImpl() : m_Channel(-1) {}
virtual ~IChannelTuneRequestImpl() {}
BEGIN_PROP_MAP(IChannelTuneRequestImpl)
CHAIN_PROP_MAP(basetype)
PROP_DATA_ENTRY("Channel", m_Channel, VT_I4)
END_PROP_MAP()
long m_Channel;
STDMETHOD(get_Channel)(long *pVal)
{
try {
if (!pVal) {
return E_POINTER;
}
ATL_LOCKT();
*pVal = m_Channel;
} catch (...) {
return E_POINTER;
}
return NOERROR;
}
STDMETHOD(put_Channel)(long newVal)
{
ATL_LOCKT();
if (!m_TS) {
return E_UNEXPECTED;
}
long maxval;
long minval;
TNAnalogTVTuningSpace ts(m_TS);
if (ts) {
maxval = ts.MaxChannel();
minval = ts.MinChannel();
} else {
TNAnalogRadioTuningSpace ts2(m_TS);
if (ts2) {
maxval = ts2.MaxFrequency();
minval = ts2.MinFrequency();
} else {
TNAuxInTuningSpace ts3(m_TS);
if(ts3){
maxval = 1;
minval = 0;
}
else{
return E_UNEXPECTED;
}
}
}
if (newVal != BDA_UNDEFINED_CHANNEL) {
if (newVal < minval) {
newVal = maxval;
} else if (newVal > maxval) {
newVal = minval;
}
}
m_Channel = newVal;
MARK_DIRTY(T);
return NOERROR;
}
STDMETHOD(Clone) (ITuneRequest **ppTR) {
try {
if (!ppTR) {
return E_POINTER;
}
ATL_LOCKT();
HRESULT hr = basetype::Clone(ppTR);
if (FAILED(hr)) {
return hr;
}
T* pt = static_cast<T*>(*ppTR);
pt->m_Channel = m_Channel;
return NOERROR;
} catch (HRESULT h) {
return h;
} catch (...) {
return E_POINTER;
}
}
};
typedef CComQIPtr<IChannelTuneRequest> PQChannelTuneRequest;
}; // namespace
#endif // CHANNELTUNEREQUESTIMPL_H
// end of file -- channeltunerequestimpl.h