bool HVideoEncoder::SetupCrossbar()
{
ComPtr<IBaseFilter> crossbar;
ComPtr<IPin> pin;
REGPINMEDIUM medium;
/* C353 has no crossbar */
if (config.name.find(L"C353") != std::string::npos)
return true;
if (!GetPinByName(device, PINDIR_INPUT, L"Analog Video In", &pin)) {
Warning(L"Failed to get Analog Video In pin");
return false;
}
if (!GetPinMedium(pin, medium)) {
Warning(L"Failed to get Analog Video In pin medium");
return false;
}
if (!GetFilterByMedium(AM_KSCATEGORY_CROSSBAR, medium, &crossbar)) {
Warning(L"Failed to get crossbar filter");
return false;
}
graph->AddFilter(crossbar, L"Crossbar Filter");
if (!DirectConnectFilters(graph, crossbar, device)) {
Warning(L"Failed to connect crossbar to device");
return false;
}
return true;
}
static inline bool CreateFilters(IBaseFilter *filter,
IBaseFilter **crossbar, IBaseFilter **encoder,
IBaseFilter **demuxer)
{
CComPtr<IPin> inputPin;
CComPtr<IPin> outputPin;
REGPINMEDIUM inMedium;
REGPINMEDIUM outMedium;
bool hasOutMedium;
HRESULT hr;
if (!GetPinByName(filter, PINDIR_INPUT, nullptr, &inputPin)) {
Warning(L"Encoded Device: Failed to get input pin");
return false;
}
if (!GetPinByName(filter, PINDIR_OUTPUT, nullptr, &outputPin)) {
Warning(L"Encoded Device: Failed to get output pin");
return false;
}
if (!GetPinMedium(inputPin, inMedium)) {
Warning(L"Encoded Device: Failed to get input pin medium");
return false;
}
hasOutMedium = GetPinMedium(outputPin, outMedium);
if (!GetFilterByMedium(AM_KSCATEGORY_CROSSBAR, inMedium, crossbar)) {
Warning(L"Encoded Device: Failed to get crossbar filter");
return false;
}
/* perfectly okay if there's no encoder filter, some don't have them */
if (hasOutMedium)
GetFilterByMedium(KSCATEGORY_ENCODER, outMedium, encoder);
hr = CoCreateInstance(CLSID_MPEG2Demultiplexer, nullptr,
CLSCTX_INPROC_SERVER, IID_IBaseFilter, (void**)demuxer);
if (FAILED(hr)) {
WarningHR(L"Encoded Device: Failed to create demuxer", hr);
return false;
}
return true;
}
bool HDevice::FindCrossbar(IBaseFilter *filter, IBaseFilter **crossbar)
{
ComPtr<IPin> pin;
REGPINMEDIUM medium;
HRESULT hr;
hr = builder->FindInterface(NULL, NULL, filter, IID_IAMCrossbar,
(void**)crossbar);
if (SUCCEEDED(hr))
return true;
if (!GetPinByName(filter, PINDIR_INPUT, nullptr, &pin))
return false;
if (!GetPinMedium(pin, medium))
return false;
if (!GetFilterByMedium(AM_KSCATEGORY_CROSSBAR, medium, crossbar))
return false;
graph->AddFilter(*crossbar, L"Crossbar Filter");
return true;
}
bool HVideoEncoder::SetupEncoder(IBaseFilter *filter)
{
ComPtr<IBaseFilter> deviceFilter;
ComPtr<IPin> inputPin;
ComPtr<IPin> outputPin;
REGPINMEDIUM medium;
MediaTypePtr mtRaw;
MediaTypePtr mtEncoded;
if (!GetPinByName(filter, PINDIR_INPUT, nullptr, &inputPin)) {
Warning(L"Could not get encoder input pin");
return false;
}
if (!GetPinByName(filter, PINDIR_OUTPUT, nullptr, &outputPin)) {
Warning(L"Could not get encoder output pin");
return false;
}
if (!GetPinMedium(inputPin, medium)) {
Warning(L"Could not get input pin medium");
return false;
}
inputPin.Release();
if (!GetFilterByMedium(CLSID_VideoInputDeviceCategory, medium,
&deviceFilter)) {
Warning(L"Could not get device filter from medium");
return false;
}
if (!GetPinByName(deviceFilter, PINDIR_INPUT, L"YUV In", &inputPin)) {
Warning(L"Could not device YUV pin");
return false;
}
if (!GetPinFirstMediaType(inputPin, &mtRaw)) {
Warning(L"Could not get YUV pin media type");
return false;
}
if (!GetPinFirstMediaType(outputPin, &mtEncoded)) {
Warning(L"Could not get encoder output pin media type");
return false;
}
PinCaptureInfo captureInfo;
captureInfo.callback = [this] (IMediaSample *s) {Receive(s);};
captureInfo.expectedMajorType = mtEncoded->majortype;
captureInfo.expectedSubType = mtEncoded->subtype;
PinOutputInfo outputInfo;
outputInfo.expectedMajorType = mtRaw->majortype;
outputInfo.expectedSubType = mtRaw->subtype;
outputInfo.cx = config.cx;
outputInfo.cy = config.cy;
InitializeVideoFormat(outputInfo.mt);
encoder = filter;
device = deviceFilter;
capture = new CaptureFilter(captureInfo);
output = new OutputFilter(outputInfo);
graph->AddFilter(output, nullptr);
graph->AddFilter(device, L"Device Filter");
graph->AddFilter(encoder, L"Encoder Filter");
graph->AddFilter(capture, nullptr);
return true;
}
