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;
}
bool videoInputCamera::getVideoControlValue( long prop, long &value, long &flag){
IAMCameraControl *lpCameraControl = NULL;
HRESULT hr = pInputFilter->QueryInterface(IID_IAMCameraControl, (void**)&lpCameraControl);
if (FAILED(hr)) return false;
hr = lpCameraControl->Get(prop, &value, &flag);
lpCameraControl->Release();
if (FAILED(hr)) return false;
else return true;
}
QVariantList CaptureDShow::cameraControls(IBaseFilter *filter) const
{
if (!filter)
return QVariantList();
qint32 min;
qint32 max;
qint32 step;
qint32 defaultValue;
qint32 flags;
qint32 value;
QVariantList controls;
IAMCameraControl *pCameraControl = NULL;
if (SUCCEEDED(filter->QueryInterface(IID_IAMCameraControl,
reinterpret_cast<void **>(&pCameraControl)))) {
for (const CameraControlProperty &cameraControl: ccToStr->keys()) {
if (SUCCEEDED(pCameraControl->GetRange(cameraControl,
reinterpret_cast<LONG *>(&min),
reinterpret_cast<LONG *>(&max),
reinterpret_cast<LONG *>(&step),
reinterpret_cast<LONG *>(&defaultValue),
reinterpret_cast<LONG *>(&flags))))
if (SUCCEEDED(pCameraControl->Get(cameraControl,
reinterpret_cast<LONG *>(&value),
reinterpret_cast<LONG *>(&flags)))) {
QVariantList control;
control << ccToStr->value(cameraControl)
<< QString("integer")
<< min
<< max
<< step
<< defaultValue
<< value
<< QStringList();
controls << QVariant(control);
}
}
pCameraControl->Release();
}
return controls;
}
