int CaptureClass::getProperty(int aProperty, float &aValue, int &aAuto)
{
HRESULT hr;
IAMVideoProcAmp *procAmp = NULL;
IAMCameraControl *control = NULL;
aAuto = 0;
aValue = -1;
int prop = escapiPropToMFProp(aProperty);
if (aProperty < CAPTURE_PAN)
{
hr = mSource->QueryInterface(IID_PPV_ARGS(&procAmp));
if (SUCCEEDED(hr))
{
long min, max, step, def, caps;
hr = procAmp->GetRange(prop, &min, &max, &step, &def, &caps);
if (SUCCEEDED(hr))
{
long v = 0, f = 0;
hr = procAmp->Get(prop, &v, &f);
if (SUCCEEDED(hr))
{
aValue = (v - min) / (float)(max - min);
aAuto = !!(f & VideoProcAmp_Flags_Auto);
}
}
procAmp->Release();
return 0;
}
}
else
{
hr = mSource->QueryInterface(IID_PPV_ARGS(&control));
if (SUCCEEDED(hr))
{
long min, max, step, def, caps;
hr = control->GetRange(prop, &min, &max, &step, &def, &caps);
if (SUCCEEDED(hr))
{
long v = 0, f = 0;
hr = control->Get(prop, &v, &f);
if (SUCCEEDED(hr))
{
aValue = (v - min) / (float)(max - min);
aAuto = !!(f & VideoProcAmp_Flags_Auto);
}
}
control->Release();
return 0;
}
}
return 1;
}
Void ReadDemo()
{
HRESULT hr;
IAMVideoProcAmp *pVideoProc;
/* [out] */ long Min;
/* [out] */ long Max;
/* [out] */ long SteppingDelta;
/* [out] */ long Default;
/* [out] */ long CapsFlags = 0;
long val_brightness, flag;
long val_whitebalance;
long val_gain;
hr = cpVideoCapture->QueryInterface(__uuidof(IAMVideoProcAmp), (void **)&pVideoProc);
if( FAILED(hr)){ printf("Querying failed\n");}
pVideoProc->GetRange( KSPROPERTY_VIDEOPROCAMP_BRIGHTNESS, &Min, &Max, &SteppingDelta, &Default, &CapsFlags);
pVideoProc->Get( KSPROPERTY_VIDEOPROCAMP_BRIGHTNESS, &val_brightness, &flag);
pVideoProc->Get( KSPROPERTY_VIDEOPROCAMP_WHITEBALANCE, &val_whitebalance, &flag);
pVideoProc->Get( KSPROPERTY_VIDEOPROCAMP_GAIN, &val_gain, &flag);
int g = 0;
pVideoProc->Release();
}
QVariantList CaptureDShow::imageControls(IBaseFilter *filter) const
{
if (!filter)
return QVariantList();
qint32 min;
qint32 max;
qint32 step;
qint32 defaultValue;
qint32 flags;
qint32 value;
QVariantList controls;
IAMVideoProcAmp *pProcAmp = NULL;
if (SUCCEEDED(filter->QueryInterface(IID_IAMVideoProcAmp,
reinterpret_cast<void **>(&pProcAmp)))) {
for (const VideoProcAmpProperty &property: vpapToStr->keys()) {
if (SUCCEEDED(pProcAmp->GetRange(property,
reinterpret_cast<LONG *>(&min),
reinterpret_cast<LONG *>(&max),
reinterpret_cast<LONG *>(&step),
reinterpret_cast<LONG *>(&defaultValue),
reinterpret_cast<LONG *>(&flags))))
if (SUCCEEDED(pProcAmp->Get(property,
reinterpret_cast<LONG *>(&value),
reinterpret_cast<LONG *>(&flags)))) {
QVariantList control;
QString type;
if (property == VideoProcAmp_ColorEnable
|| property == VideoProcAmp_BacklightCompensation)
type = "boolean";
else
type = "integer";
if (value == defaultValue)
defaultValue = (min + max) / 2;
control << vpapToStr->value(property)
<< type
<< min
<< max
<< step
<< defaultValue
<< value
<< QStringList();
controls << QVariant(control);
}
}
pProcAmp->Release();
}
return controls;
}
bool videoInputCamera::getVideoSettingValue(long prop, long &value, long &flag){
IAMVideoProcAmp *lpAMVideoProcAmp = NULL;
HRESULT hr = pInputFilter->QueryInterface(IID_IAMVideoProcAmp, (void**)&lpAMVideoProcAmp);
if (FAILED(hr)) return false;
hr = lpAMVideoProcAmp->Get(prop, &value, &flag);
lpAMVideoProcAmp->Release();
if(FAILED(hr)) return false;
else return true;
}