bool CMFCamCapture::selectMediaType(IMFMediaSource *pSource, IMFMediaType *pType)
{
UINT32 count = 0;
UINT32 found = 0;
UINT32 uHigh = 0, uLow = 0;
CLSID uuid;
UINT32 i;
HRESULT hr = pType->GetCount(&count);
if (FAILED(hr)) {
return false;
}
if (count == 0) {
return false;
}
for (i = 0; i < count; i++) {
GUID guid = { 0 };
PROPVARIANT var;
PropVariantInit(&var);
hr = pType->GetItemByIndex(i, &guid, &var);
if (FAILED(hr)) {
goto done;
}
if (guid == MF_MT_FRAME_SIZE) {
Unpack2UINT32AsUINT64(var.uhVal.QuadPart, &uHigh, &uLow);
if (uHigh == 640 && (uLow == 480 || uLow == 360)) {
found |= 1;
}
}
else if (guid == MF_MT_MAJOR_TYPE) {
if (*var.puuid == MFMediaType_Video) {
found |= 2;
}
}
else if (guid == MF_MT_SUBTYPE) {
if (*var.puuid == MFVideoFormat_I420 ||
*var.puuid == MFVideoFormat_IYUV ||
*var.puuid == MFVideoFormat_RGB24
) {
uuid = *var.puuid;
found |= 4;
}
}
done:
PropVariantClear(&var);
if (found == 7) {
m_captureHeight = uLow;
m_captureWidth = uHigh;
m_captureFormat = uuid;
return true;
}
}
return false;
}
static void LogUINT32AsUINT64(const PROPVARIANT& var)
{
UINT32 uHigh = 0, uLow = 0;
Unpack2UINT32AsUINT64(var.uhVal.QuadPart, &uHigh, &uLow);
DBGMSG(L"%d x %d", uHigh, uLow);
}
void LogUINT32AsUINT64New(const PROPVARIANT& var, UINT32 &uHigh, UINT32 &uLow)
{
Unpack2UINT32AsUINT64(var.uhVal.QuadPart, &uHigh, &uLow);
}
