int VideoCapture::Connect(const wchar_t* deviceName)
{
if (GetStatus() != OK)
return -1;
hr = m_pCapture->SetFiltergraph(m_pGraph);
if (FAILED(hr))
return -2;
IBaseFilter* pSrcFilter = NULL;
hr = FindCaptureDevice(deviceName, &pSrcFilter);
if (FAILED(hr))
return -3;
// Add Capture filter to our graph.
hr = m_pGraph->AddFilter(pSrcFilter, L"Video Capture");
if (FAILED(hr)) {
pSrcFilter->Release();
return -3;
}
//Add Sample Grabber filter
IBaseFilter* pGrabberFilter = NULL;
hr = AddSampleGrabber(&pGrabberFilter);
if (FAILED(hr)) {
pSrcFilter->Release();
return -4;
}
IBaseFilter* pNullFilter = NULL;
hr = AddNullRenderer(&pNullFilter);
if (FAILED(hr)) {
pGrabberFilter->Release();
pSrcFilter->Release();
return -5;
}
// Render the preview pin on the video capture filter
hr = m_pCapture->RenderStream(&PIN_CATEGORY_PREVIEW, &MEDIATYPE_Video,
pSrcFilter, pGrabberFilter, pNullFilter);
if (FAILED(hr)) {
pNullFilter->Release();
pGrabberFilter->Release();
pSrcFilter->Release();
return -6;
}
pNullFilter->Release();
pGrabberFilter->Release();
pSrcFilter->Release();
m_Status = CONNECTED;
hr = GetMediaType();
if (FAILED(hr))
return -7;
return 0;
}
void VideoCapture::EnumResolutions()
{
int iCount, iSize, iChosen=-1;
IBaseFilter *pSource;
CComPtr <ICaptureGraphBuilder2> pCaptB;
VIDEO_STREAM_CONFIG_CAPS caps;
HRESULT hr;
bool response;
IAMStreamConfig *pConfig;
devices_resolutions = new DeviceResolutions[nDevices];
pCaptB.CoCreateInstance(CLSID_CaptureGraphBuilder2);
for (unsigned int iDevice=0; iDevice<nDevices; iDevice++)
{
response = BindFilter(iDevice, &pSource);
hr = pCaptB->FindInterface(
&PIN_CATEGORY_CAPTURE,
&MEDIATYPE_Video,
pSource,
IID_IAMStreamConfig,
(void**)&pConfig);
if (!SUCCEEDED(hr))
{
pSource->Release();
devices_resolutions[iDevice].nResolutions = 0;
continue;
}
pConfig->GetNumberOfCapabilities(&iCount, &iSize);
devices_resolutions[iDevice].SetNResolutions(iCount);
for(int i=0; i < iCount; i++) {
AM_MEDIA_TYPE *pmt;
if( pConfig->GetStreamCaps(i, &pmt, reinterpret_cast<BYTE*>(&caps)) == S_OK ) {
VIDEOINFOHEADER *pVih =
reinterpret_cast<VIDEOINFOHEADER*>(pmt->pbFormat);
devices_resolutions[iDevice].x[i] = caps.InputSize.cx;
devices_resolutions[iDevice].y[i] = caps.InputSize.cy;
devices_resolutions[iDevice].color_space[i] = pmt->subtype;
devices_resolutions[iDevice].compression[i] = pVih->bmiHeader.biCompression;
DeleteMediaType(pmt);
}
}
pSource->Release();
pConfig->Release();
pSource = 0;
}
}
static gboolean
gst_dshowvideodec_destroy_graph_and_filters (GstDshowVideoDec * vdec)
{
HRESULT hres;
if (vdec->mediafilter) {
vdec->mediafilter->Stop();
}
if (vdec->fakesrc) {
if (vdec->filtergraph) {
IBaseFilter *filter;
hres = vdec->fakesrc->QueryInterface(IID_IBaseFilter,
(void **) &filter);
if (SUCCEEDED (hres)) {
vdec->filtergraph->RemoveFilter(filter);
filter->Release();
}
}
vdec->fakesrc->Release();
vdec->fakesrc = NULL;
}
if (vdec->decfilter) {
if (vdec->filtergraph)
vdec->filtergraph->RemoveFilter(vdec->decfilter);
vdec->decfilter->Release();
vdec->decfilter = NULL;
}
if (vdec->fakesink) {
if (vdec->filtergraph) {
IBaseFilter *filter;
hres = vdec->fakesink->QueryInterface(IID_IBaseFilter,
(void **) &filter);
if (SUCCEEDED (hres)) {
vdec->filtergraph->RemoveFilter(filter);
filter->Release();
}
}
vdec->fakesink->Release();
vdec->fakesink = NULL;
}
if (vdec->mediafilter) {
vdec->mediafilter->Release();
vdec->mediafilter = NULL;
}
if (vdec->filtergraph) {
vdec->filtergraph->Release();
vdec->filtergraph = NULL;
}
vdec->setup = FALSE;
return TRUE;
}
HRESULT CAccessSys::BuildCapture(void)
{
HRESULT hr;
IBaseFilter *pSrcFilter = NULL;
IBaseFilter *pMpeg2Filter = NULL;
if (b_buildCapture){
return S_OK;
}
// Get DirectShow interfaces
hr = GetInterfaces();
if (FAILED(hr))
{
Msg(TEXT("Failed to get video interfaces! hr=0x%x"), hr);
return hr;
}
pSrcFilter = p_streams[0].p_device_filter;
// Render the preview pin on the video capture filter
// Use this instead of g_pGraph->RenderFile
p_VideoFilter = new CMyCapVideoFilter(this, NULL, &m_lock, NULL);
hr = p_graph->AddFilter(p_VideoFilter, L"video filter");
hr = p_capture_graph_builder2->RenderStream(&PIN_CATEGORY_CAPTURE, &MEDIATYPE_Video,
pSrcFilter, NULL, p_VideoFilter);
if (FAILED(hr))
{
Msg(TEXT("Couldn't render the video capture stream to my filter. hr=0x%x\r\n")
TEXT("The capture device may already be in use by another application.\r\n\r\n")
TEXT("The sample will now close."), hr);
pSrcFilter->Release();
return hr;
}
pSrcFilter = p_streams[1].p_device_filter;
p_AudioFilter = new CMyCapAudioFilter(this, NULL, &m_alock, NULL);
hr = p_graph->AddFilter(p_AudioFilter, L"audio filter");
hr = p_capture_graph_builder2->RenderStream(&PIN_CATEGORY_CAPTURE, &MEDIATYPE_Audio,
pSrcFilter, NULL, p_AudioFilter);
if (FAILED(hr))
{
Msg(TEXT("Couldn't render the audio capture stream to my audio filter. hr=0x%x\r\n")
TEXT("The capture device may already be in use by another application.\r\n\r\n")
TEXT("The sample will now close."), hr);
pSrcFilter->Release();
return hr;
}
b_buildCapture = true;
return S_OK;
}
//
// The GraphBuilder interface provides a FindFilterByName() method,
// which provides similar functionality to the method below.
// This local method is provided for educational purposes.
//
IBaseFilter *FindFilterFromName(IGraphBuilder *pGB, LPTSTR szNameToFind)
{
USES_CONVERSION;
HRESULT hr;
IEnumFilters *pEnum = NULL;
IBaseFilter *pFilter = NULL;
ULONG cFetched;
BOOL bFound = FALSE;
// Verify graph builder interface
if (!pGB)
return NULL;
// Get filter enumerator
hr = pGB->EnumFilters(&pEnum);
if (FAILED(hr))
return NULL;
// Enumerate all filters in the graph
while((pEnum->Next(1, &pFilter, &cFetched) == S_OK) && (!bFound))
{
FILTER_INFO FilterInfo;
TCHAR szName[256];
hr = pFilter->QueryFilterInfo(&FilterInfo);
if (FAILED(hr))
{
pFilter->Release();
pEnum->Release();
return NULL;
}
// Compare this filter's name with the one we want
lstrcpy(szName, W2T(FilterInfo.achName));
if (! lstrcmp(szName, szNameToFind))
{
bFound = TRUE;
}
FilterInfo.pGraph->Release();
// If we found the right filter, don't release its interface.
// The caller will use it and release it later.
if (!bFound)
pFilter->Release();
else
break;
}
pEnum->Release();
return (bFound ? pFilter : NULL);
}
//
// FindSubtitleFilter
//
// be careful with this method, can cause deadlock with CSync::Stop, so should only be called in Run()
HRESULT CTsReaderFilter::FindSubtitleFilter()
{
if( m_pDVBSubtitle )
{
return S_OK;
}
//LogDebug( "FindSubtitleFilter - start");
IEnumFilters * piEnumFilters = NULL;
if (GetFilterGraph() && SUCCEEDED(GetFilterGraph()->EnumFilters(&piEnumFilters)))
{
IBaseFilter * pFilter;
while (piEnumFilters->Next(1, &pFilter, 0) == NOERROR )
{
FILTER_INFO filterInfo;
if (pFilter->QueryFilterInfo(&filterInfo) == S_OK)
{
if (!wcsicmp(L"MediaPortal DVBSub2", filterInfo.achName))
{
HRESULT fhr = pFilter->QueryInterface( IID_IDVBSubtitle2, ( void**)&m_pDVBSubtitle );
assert( fhr == S_OK);
//LogDebug("Testing that DVBSub2 works");
m_pDVBSubtitle->Test(1);
}
filterInfo.pGraph->Release();
}
pFilter->Release();
pFilter = NULL;
}
piEnumFilters->Release();
}
//LogDebug( "FindSubtitleFilter - End");
return S_OK;
}
HRESULT CDShowUtility::FindFilterInterface(IGraphBuilder *pGraph, REFGUID iid, void **ppUnk)
{
if (!pGraph || !ppUnk)
{
return E_POINTER;
}
HRESULT hr = E_FAIL;
IEnumFilters *pEnum = NULL;
IBaseFilter *pF = NULL;
if (FAILED(pGraph->EnumFilters(&pEnum)))
{
return E_FAIL;
}
//分别调用 Queryinterface, 枚举filter Graph 中的所有Filter
while (S_OK == pEnum->Next(1, &pF, 0))
{
hr = pF->QueryInterface(iid, ppUnk);
pF->Release();
if (SUCCEEDED(hr))
{
break;
}
}
pEnum->Release();
return hr;
}
BOOL VerifyVMR9(void)
{
HRESULT hr;
// Verify that the VMR exists on this system
IBaseFilter* pBF = NULL;
hr = CoCreateInstance(CLSID_VideoMixingRenderer9, NULL,
CLSCTX_INPROC,
IID_IBaseFilter,
(LPVOID *)&pBF);
if(SUCCEEDED(hr))
{
pBF->Release();
return TRUE;
}
else
{
MessageBox(NULL,
TEXT("This application requires the VMR-9.\r\n\r\n")
TEXT("The VMR-9 is not enabled when viewing through a Remote\r\n")
TEXT(" Desktop session. You can run VMR-enabled applications only\r\n")
TEXT("on your local computer.\r\n\r\n")
TEXT("\r\nThis sample will now exit."),
TEXT("Video Mixing Renderer (VMR9) capabilities are required"), MB_OK);
return FALSE;
}
}
HRESULT CBDReaderFilter::FindSubtitleFilter()
{
if (m_pDVBSubtitle)
return S_OK;
HRESULT hr = S_FALSE;
ULONG fetched = 0;
IEnumFilters * piEnumFilters = NULL;
if (GetFilterGraph() && SUCCEEDED(GetFilterGraph()->EnumFilters(&piEnumFilters)))
{
IBaseFilter * pFilter;
while (piEnumFilters->Next(1, &pFilter, &fetched) == NOERROR)
{
FILTER_INFO filterInfo;
if (pFilter->QueryFilterInfo(&filterInfo) == S_OK)
{
if (!wcsicmp(L"MediaPortal DVBSub3", filterInfo.achName))
hr = pFilter->QueryInterface(IID_IDVBSubtitle3, (void**)&m_pDVBSubtitle);
filterInfo.pGraph->Release();
}
pFilter->Release();
pFilter = NULL;
}
piEnumFilters->Release();
}
return hr;
}
HRESULT VideoCapture::FindCaptureDevice(const wchar_t* deviceName, IBaseFilter** ppSrcFilter)
{
ICreateDevEnum *pSysDevEnum = NULL;
hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER,
IID_ICreateDevEnum, (void **)&pSysDevEnum);
if (FAILED(hr))
return hr;
// Obtain a class enumerator for the video input devices category.
IEnumMoniker *pEnumCat = NULL;
hr = pSysDevEnum->CreateClassEnumerator(CLSID_VideoInputDeviceCategory, &pEnumCat, 0);
if (hr == S_OK) {
// Enumerate the monikers.
IMoniker *pMoniker = NULL;
ULONG cFetched;
while (pEnumCat->Next(1, &pMoniker, &cFetched) == S_OK) {
IPropertyBag *pPropBag;
hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag,
(void **)&pPropBag);
if (SUCCEEDED(hr)) {
// To retrieve the filter's friendly name
VARIANT varName;
VariantInit(&varName);
hr = pPropBag->Read(L"FriendlyName", &varName, 0);
if (SUCCEEDED(hr)) {
if (wcscmp(deviceName, varName.bstrVal) == 0) {
m_DeviceName = varName.bstrVal;
VariantClear(&varName);
IBaseFilter* pFilter;
hr = pMoniker->BindToObject(NULL, NULL, IID_IBaseFilter,
(void**)&pFilter);
if (SUCCEEDED(hr)) {
*ppSrcFilter = pFilter;
(*ppSrcFilter)->AddRef();
pFilter->Release();
}
pPropBag->Release();
pMoniker->Release();
pEnumCat->Release();
pSysDevEnum->Release();
return hr;
}
}
VariantClear(&varName);
pPropBag->Release();
}
pMoniker->Release();
}
pEnumCat->Release();
}
else {
pSysDevEnum->Release();
return hr;
}
pSysDevEnum->Release();
return -1;
}
HRESULT FindFilterInterface(
IGraphBuilder *pGraph, // Pointer to the Filter Graph Manager.
REFGUID iid, // IID of the interface to retrieve.
void **ppUnk) // Receives the interface pointer.
{
if (!pGraph || !ppUnk) return E_POINTER;
HRESULT hr = E_FAIL;
IEnumFilters *pEnum = NULL;
IBaseFilter *pF = NULL;
if (FAILED(pGraph->EnumFilters(&pEnum)))
{
return E_FAIL;
}
// Query every filter for the interface.
while (S_OK == pEnum->Next(1, &pF, 0))
{
hr = pF->QueryInterface(iid, ppUnk);
pF->Release();
if (SUCCEEDED(hr))
{
break;
}
}
pEnum->Release();
return hr;
}
HRESULT GetPinCountForOneType(IUnknown* pUnk, PIN_DIRECTION direction, LPDWORD pPinCount)
{
(*pPinCount) = 0;
IBaseFilter* pBaseFilter = NULL;
HRESULT hr = pUnk->QueryInterface(IID_IBaseFilter, (VOID**)&pBaseFilter);
if (SUCCEEDED(hr))
{
IEnumPins* pEnumPins = NULL;
hr = pBaseFilter->EnumPins(&pEnumPins);
if (SUCCEEDED(hr))
{
pEnumPins->Reset();
if (SUCCEEDED(hr))
{
IPin* pPin = NULL;
BOOL bFound = FALSE;
DWORD dwFetched = 0;
while (((pEnumPins->Next(1, &pPin, &dwFetched)) == S_OK) && !bFound)
{
PIN_DIRECTION fetchedDir;
hr = pPin->QueryDirection(&fetchedDir);
if (SUCCEEDED(hr) && (fetchedDir == direction))
{
(*pPinCount)++;
}
pPin->Release();
}
}
pEnumPins->Release();
}
pBaseFilter->Release();
}
return hr;
}
HRESULT GetAMConfigForSinglePin(IUnknown* pUnk, PIN_DIRECTION direction, IAMStreamConfig** ppConfig)
{
IBaseFilter* pBaseFilter = NULL;
HRESULT hr = pUnk->QueryInterface(IID_IBaseFilter, (void**)&pBaseFilter);
if (SUCCEEDED(hr))
{
IEnumPins* pEnumPins = NULL;
hr = pBaseFilter->EnumPins(&pEnumPins);
if (SUCCEEDED(hr))
{
pEnumPins->Reset();
if (SUCCEEDED(hr))
{
IPin* pPin = NULL;
BOOL bFound = FALSE;
while (((pEnumPins->Next(1, &pPin, NULL)) == S_OK) && !bFound)
{
PIN_DIRECTION fetchedDir;
hr = pPin->QueryDirection(&fetchedDir);
if (SUCCEEDED(hr) && (fetchedDir == direction))
{
hr = pPin->QueryInterface(IID_IAMStreamConfig, (void**)ppConfig);
bFound = SUCCEEDED(hr);
}
pPin->Release();
}
}
pEnumPins->Release();
}
pBaseFilter->Release();
}
return hr;
}
/* 创建VMR，添加、设置VMR */
HRESULT CVMR_Capture::InitializeWindowlessVMR(HWND hWnd)
{
IBaseFilter* pVmr = NULL;
// 创建VMR
HRESULT hr = CoCreateInstance(CLSID_VideoMixingRenderer, NULL,
CLSCTX_INPROC, IID_IBaseFilter, (void**)&pVmr);
if (SUCCEEDED(hr))
{
//添加VMR到滤波器链表中
hr = m_pGB->AddFilter(pVmr, L"Video Mixing Renderer");
if (SUCCEEDED(hr))
{
// 设置无窗口渲染模式
IVMRFilterConfig* pConfig;
hr = pVmr->QueryInterface(IID_IVMRFilterConfig, (void**)&pConfig);
if( SUCCEEDED(hr))
{
pConfig->SetRenderingMode(VMRMode_Windowless);
pConfig->Release();
}
// 设置传入的窗口为显示窗口
hr = pVmr->QueryInterface(IID_IVMRWindowlessControl, (void**)&m_pWC);
if( SUCCEEDED(hr))
{
m_pWC->SetVideoClippingWindow(hWnd);
}
}
pVmr->Release();
}
return hr;
}
//
// Removes any filters in the audio graph - called before rebuilding the audio graph.
//
void CMediaPlayer::RemoveAllFilters()
{
IEnumFilters *enumFilters;
HRESULT hr = _GraphBuilder->EnumFilters(&enumFilters);
if (SUCCEEDED(hr))
{
IBaseFilter *filter = NULL;
hr = enumFilters->Next(1, &filter, NULL);
while (hr == S_OK)
{
//
// Remove the filter from the graph.
//
_GraphBuilder->RemoveFilter(filter);
filter->Release();
//
// Reset the enumeration since we removed the filter (which invalidates the enumeration).
//
enumFilters->Reset();
hr = enumFilters->Next(1, &filter, NULL);
}
enumFilters->Release();
}
}
//Добавляет к текущему Filter Graph оболочку 'DMOWrapper' и вызывает инициализацию
//DMO объекта с именем lpwDMOName
//Перед вызовом этой функции необходимо вызвать UpdateDMOArray(...) (если она не вызывалась)
//В случае ошибки функция вернет значение меньше нуля
int CDirectShow::AddDMOToFilterGraph(LPCWSTR lpwDMOName)
{
if (!m_pGraphBuilder) return -1;
if (!m_lDMOCount) return -1;
IBaseFilter *pDMOWBaseFilter = NULL;
IDMOWrapperFilter *pDMOWrapper;
for (m_lCounter = 0; m_lCounter < m_lDMOCount; m_lCounter++)
{
if (_wcsicmp(m_lpwDMONames[m_lCounter], lpwDMOName) == 0)
{
if (FAILED(CoCreateInstance(CLSID_DMOWrapperFilter, NULL, CLSCTX_INPROC,
IID_IBaseFilter, (LPVOID *)&pDMOWBaseFilter))) return -1;
if (FAILED(pDMOWBaseFilter->QueryInterface(IID_IDMOWrapperFilter,
(LPVOID *)&pDMOWrapper))) return -1;
pDMOWrapper->Init(m_cDMOCLSIDs[m_lCounter], m_gidRecentDMOCat);
pDMOWrapper->Release();
m_pGraphBuilder->AddFilter(pDMOWBaseFilter, m_lpwDMONames[m_lCounter]);
pDMOWBaseFilter->Release();
}
else
{
if (m_lCounter >= (m_lDMOCount - 1))
return -1; else continue;
}
}
return 0;
}
/*****************************Private*Routine******************************\
* VerifyVMR
*
\**************************************************************************/
BOOL VerifyVMR(void)
{
HRESULT hres;
CoInitialize(NULL);
// Verify that the VMR exists on this system
IBaseFilter* pBF = NULL;
hres = CoCreateInstance(CLSID_VideoMixingRenderer,
NULL,
CLSCTX_INPROC,
IID_IBaseFilter,
(LPVOID *)&pBF);
if(SUCCEEDED(hres))
{
pBF->Release();
CoUninitialize();
return TRUE;
}
else
{
MessageBox(NULL,
TEXT("This application requires the Video Mixing Renderer, which is present\r\n")
TEXT("only on Windows XP.\r\n\r\n")
TEXT("The Video Mixing Renderer (VMR) is also not enabled when viewing a \r\n")
TEXT("remote Windows XP machine through a Remote Desktop session.\r\n")
TEXT("You can run VMR-enabled applications only on your local machine.")
TEXT("\r\n\r\nThis sample will now exit."),
TEXT("Video Mixing Renderer capabilities are required"), MB_OK);
CoUninitialize();
return FALSE;
}
}
HRESULT FindInterfaceAnywhere(
IGraphBuilder *pGraph,
REFGUID iid,
void **ppUnk)
{
if (!pGraph || !ppUnk) return E_POINTER;
HRESULT hr = E_FAIL;
IEnumFilters *pEnum = 0;
if (FAILED(pGraph->EnumFilters(&pEnum)))
{
return E_FAIL;
}
// Loop through every filter in the graph.
IBaseFilter *pF = 0;
while (S_OK == pEnum->Next(1, &pF, 0))
{
hr = pF->QueryInterface(iid, ppUnk);
if (FAILED(hr))
{
// The filter does not expose the interface, but maybe
// one of its pins does.
hr = FindPinInterface(pF, iid, ppUnk);
}
pF->Release();
if (SUCCEEDED(hr))
{
break;
}
}
pEnum->Release();
return hr;
}
HRESULT
recChannel_t::remap(void)
{
__CONTEXT("recChannel_t::remap");
IBaseFilter * pFilter = NULL;
int hr = 0;
pControl->StopWhenReady();
IPin * pin = NULL;
hr = pGraph->FindFilterByName(L"AVI Decompressor",&pFilter);
if (!hr)
{
hr = pGraph->RemoveFilter(pFilter);
errorCheck(hr);
pFilter->Release();
}
hr = pGraph->FindFilterByName(L"Video Renderer",&pFilter);
if (!hr)
{
while ((hr = GetConnectedPin(pFilter,PINDIR_INPUT,&pin))==0)
{
pin->Disconnect();
}
}
if (pOutput) pOutput->Disconnect();
remaped = true;
return 0;
}
/* Display filter or pin */
CDisp::CDisp(IUnknown *pUnk)
{
IBaseFilter *pf;
HRESULT hr = pUnk->QueryInterface(IID_IBaseFilter, (void **)&pf);
if(SUCCEEDED(hr))
{
FILTER_INFO fi;
hr = pf->QueryFilterInfo(&fi);
if(SUCCEEDED(hr))
{
QueryFilterInfoReleaseGraph(fi);
m_pString = new TCHAR[lstrlenW(fi.achName) + 1];
if(m_pString)
{
wsprintf(m_pString, TEXT("%ls"), fi.achName);
}
}
pf->Release();
return;
}
IPin *pp;
hr = pUnk->QueryInterface(IID_IPin, (void **)&pp);
if(SUCCEEDED(hr))
{
CDisp::CDisp(pp);
pp->Release();
return;
}
}
HRESULT CVMR_Capture::InitializeWindowlessVMR(HWND hWnd)
{
IBaseFilter* pVmr = NULL;
// Create the VMR and add it to the filter graph.
HRESULT hr = CoCreateInstance(CLSID_VideoMixingRenderer, NULL,
CLSCTX_INPROC, IID_IBaseFilter, (void**)&pVmr);
if (SUCCEEDED(hr))
{
hr = m_pGB->AddFilter(pVmr, L"Video Mixing Renderer");
if (SUCCEEDED(hr))
{
// Set the rendering mode and number of streams.
IVMRFilterConfig* pConfig;
hr = pVmr->QueryInterface(IID_IVMRFilterConfig, (void**)&pConfig);
if( SUCCEEDED(hr))
{
pConfig->SetRenderingMode(VMRMode_Windowless);
pConfig->Release();
}
hr = pVmr->QueryInterface(IID_IVMRWindowlessControl, (void**)&m_pWC);
if( SUCCEEDED(hr))
{
m_pWC->SetVideoClippingWindow(hWnd);
}
}
pVmr->Release();
}
return hr;
}
void DirectShowPlayerService::doReleaseAudioOutput(QMutexLocker *locker)
{
m_pendingTasks |= m_executedTasks & (Play | Pause);
if (IMediaControl *control = com_cast<IMediaControl>(m_graph, IID_IMediaControl)) {
control->Stop();
control->Release();
}
IBaseFilter *decoder = getConnected(m_audioOutput, PINDIR_INPUT);
if (!decoder) {
decoder = m_audioOutput;
decoder->AddRef();
}
// {DCFBDCF6-0DC2-45f5-9AB2-7C330EA09C29}
static const GUID iid_IFilterChain = {
0xDCFBDCF6, 0x0DC2, 0x45f5, {0x9A, 0xB2, 0x7C, 0x33, 0x0E, 0xA0, 0x9C, 0x29} };
if (IFilterChain *chain = com_cast<IFilterChain>(m_graph, iid_IFilterChain)) {
chain->RemoveChain(decoder, m_audioOutput);
chain->Release();
} else {
m_graph->RemoveFilter(m_audioOutput);
}
decoder->Release();
m_executedTasks &= ~SetAudioOutput;
m_loop->wake();
}
IBaseFilter *DirectShowPlayerService::getConnected(
IBaseFilter *filter, PIN_DIRECTION direction) const
{
IBaseFilter *connected = 0;
IEnumPins *pins = 0;
if (SUCCEEDED(filter->EnumPins(&pins))) {
for (IPin *pin = 0; pins->Next(1, &pin, 0) == S_OK; pin->Release()) {
PIN_DIRECTION dir;
if (SUCCEEDED(pin->QueryDirection(&dir)) && dir == direction) {
IPin *peer = 0;
if (SUCCEEDED(pin->ConnectedTo(&peer))) {
PIN_INFO info;
if (SUCCEEDED(peer->QueryPinInfo(&info))) {
if (connected) {
qWarning("DirectShowPlayerService::getConnected: "
"Multiple connected filters");
connected->Release();
}
connected = info.pFilter;
}
peer->Release();
}
}
}
pins->Release();
}
return connected;
}
//Show Filter in FilterGpragh
int show_filters_in_filtergraph(IGraphBuilder *pGraph){
printf("Filters in FilterGpragh=======\n");
USES_CONVERSION;
IEnumFilters *pFilterEnum=NULL;
if(FAILED(pGraph->EnumFilters(&pFilterEnum))){
pFilterEnum->Release();
return -1;
}
pFilterEnum->Reset();
IBaseFilter * filter = NULL;
ULONG fetchCount = 0;
//Pin Info
while (SUCCEEDED(pFilterEnum->Next(1, &filter, &fetchCount)) && fetchCount){
if (!filter){
continue;
}
FILTER_INFO FilterInfo;
if (FAILED(filter->QueryFilterInfo(&FilterInfo))){
continue;
}
printf("[%s]\n",W2A(FilterInfo.achName));
filter->Release();
}
pFilterEnum->Release();
printf("==============================\n");
return 0;
}
//查找Filter上某一个接口，只要找到FilterGraph上某一个Filter有该接口即返回
BOOL FindFilterInterface(IGraphBuilder* pGraphBuilder, REFGUID iid, void** ppUnk)
{
if(!pGraphBuilder || !ppUnk)
return FALSE;
IEnumFilters* pEnumFilter = NULL;
IBaseFilter* pFilter = NULL;
if(FAILED(pGraphBuilder->EnumFilters(&pEnumFilter)))
{
return FALSE;
}
HRESULT hr = E_FAIL;
while(S_OK == pEnumFilter->Next(1,&pFilter,NULL))
{
hr = pFilter->QueryInterface(iid,ppUnk);
pFilter->Release();
if(SUCCEEDED(hr))
{
pEnumFilter->Release();
return TRUE;
}
}
pEnumFilter->Release();
return FALSE;
}
/*****************************Public*Routine******************************\
* FindInterfaceFromFilterGraph
*
\**************************************************************************/
HRESULT
CMovie::FindInterfaceFromFilterGraph(
REFIID iid, // interface to look for
LPVOID *lp // place to return interface pointer in
)
{
IEnumFilters* pEF;
IBaseFilter* pFilter;
// Grab an enumerator for the filter graph.
HRESULT hr = m_Fg->EnumFilters(&pEF);
if(FAILED(hr))
{
return hr;
}
// Check out each filter.
while(pEF->Next(1, &pFilter, NULL) == S_OK)
{
hr = pFilter->QueryInterface(iid, lp);
pFilter->Release();
if(SUCCEEDED(hr))
{
break;
}
}
pEF->Release();
return hr;
}
void CFilterProp::ShowProperties()
{
if ( !pGB ) return;
HRESULT hr;
IBaseFilter *pFilter = NULL;
TCHAR szNameToFind[128];
ISpecifyPropertyPages *pSpecify;
// Read the current filter name from the list box
int nCurSel = m_ListFilters.GetCurSel();
m_ListFilters.GetText(nCurSel, szNameToFind);
// Read the current list box name and find it in the graph
pFilter = FindFilterFromName(szNameToFind);
if (!pFilter)
return;
// Discover if this filter contains a property page
hr = pFilter->QueryInterface(IID_ISpecifyPropertyPages, (void **)&pSpecify);
if (SUCCEEDED(hr))
{
do
{
FILTER_INFO FilterInfo;
hr = pFilter->QueryFilterInfo(&FilterInfo);
if (FAILED(hr))
break;
CAUUID caGUID;
hr = pSpecify->GetPages(&caGUID);
if (FAILED(hr))
break;
pSpecify->Release();
// Display the filter's property page
OleCreatePropertyFrame(
m_hWnd, // Parent window
0, // x (Reserved)
0, // y (Reserved)
FilterInfo.achName, // Caption for the dialog box
1, // Number of filters
(IUnknown **)&pFilter, // Pointer to the filter
caGUID.cElems, // Number of property pages
caGUID.pElems, // Pointer to property page CLSIDs
0, // Locale identifier
0, // Reserved
NULL // Reserved
);
CoTaskMemFree(caGUID.pElems);
FilterInfo.pGraph->Release();
} while(0);
}
pFilter->Release();
}
/******************************Public*Routine******************************\
* AddVideoMixingRendererToFG
*
\**************************************************************************/
HRESULT
CMovie::AddVideoMixingRendererToFG()
{
IBaseFilter* pBF = NULL;
HRESULT hRes = CoCreateInstance(CLSID_VideoMixingRenderer9, NULL, CLSCTX_INPROC,
IID_IBaseFilter, (LPVOID *)&pBF);
if(SUCCEEDED(hRes))
{
hRes = m_Fg->AddFilter(pBF, L"Video Mixing Renderer 9");
if(SUCCEEDED(hRes))
{
// Test VMRConfig, VMRMonitorConfig
IVMRFilterConfig9* pConfig;
HRESULT hRes2 = pBF->QueryInterface(IID_IVMRFilterConfig9, (LPVOID *)&pConfig);
if(SUCCEEDED(hRes2))
{
hRes2 = pConfig->SetNumberOfStreams(2);
hRes2 = pConfig->SetRenderingMode(VMR9Mode_Windowless);
//hRes2 = pConfig->SetRenderingPrefs(RenderPrefs_AllowOverlays);
pConfig->Release();
}
IVMRMonitorConfig9* pMonitorConfig;
HRESULT hRes3 = pBF->QueryInterface(IID_IVMRMonitorConfig9, (LPVOID *)&pMonitorConfig);
if(SUCCEEDED(hRes3))
{
UINT iCurrentMonitor;
HRESULT hr4 = pMonitorConfig->GetMonitor(&iCurrentMonitor);
pMonitorConfig->Release();
}
hRes = pBF->QueryInterface(IID_IVMRWindowlessControl9, (LPVOID *)&m_Wc);
}
}
if(pBF)
{
pBF->Release();
}
if(SUCCEEDED(hRes))
{
HRESULT hr = m_Wc->SetVideoClippingWindow(m_hwndApp);
hr = m_Wc->SetAspectRatioMode(VMR_ARMODE_LETTER_BOX);
}
else
{
if(m_Wc)
{
m_Wc->Release();
m_Wc = NULL;
}
}
return hRes;
}
/******************************Public*Routine******************************\
* AddVideoMixingRendererToFG
*
\**************************************************************************/
HRESULT
CMpegMovie::AddVideoMixingRendererToFG()
{
if ( m_Vw ) {
return FALSE;
} else {
IBaseFilter* pBF = NULL;
HRESULT hRes = CoCreateInstance(CLSID_VideoMixingRenderer,
NULL,
CLSCTX_INPROC,
IID_IBaseFilter,
(LPVOID *)&pBF);
if(SUCCEEDED(hRes))
{
hRes = m_Fg->AddFilter(pBF, L"Video Mixing Renderer");
if(SUCCEEDED(hRes))
{
hRes = SetRenderingMode(pBF, VMRMode_Renderless);
hRes = pBF->QueryInterface(IID_IVMRSurfaceAllocatorNotify,
(LPVOID *)&m_San);
hRes = CreateDefaultAllocatorPresenter();
hRes = m_San->AdviseSurfaceAllocator(MY_USER_ID, this);
}
}
if(pBF)
{
pBF->Release();
}
if(SUCCEEDED(hRes))
{
HRESULT hr = m_Wc->SetVideoClippingWindow(m_hwndApp);
hr = m_Wc->SetAspectRatioMode(VMR_ARMODE_LETTER_BOX);
}
else
{
if(m_Wc)
{
m_Wc->Release();
m_Wc = NULL;
}
}
return hRes;
}
}
BOOL CVMR9Graph::BuildAndRenderGraph(bool withSound)
{
USES_CONVERSION;
int nLayer = 0;
HRESULT hr;
// ENSURE that a valid graph builder is available
if (m_pGraphBuilder == NULL) {
BOOL bRet = BuildFilterGraph(withSound);
if (!bRet) return bRet;
}
// ENSURE that the filter graph is in a stop state
OAFilterState filterState;
m_pMediaControl->GetState(500, &filterState);
if (filterState != State_Stopped) {
m_pMediaControl->Stop();
}
// CHECK a source filter availaibility for the layer
if (m_srcFilterArray[nLayer] == NULL) {
char pszFilterName[10];
sprintf(pszFilterName, "SRC%02d", nLayer);
IBaseFilter* pBaseFilter = NULL;
hr = m_pGraphBuilder->AddSourceFilter(A2W(m_pszFileName), A2W(pszFilterName), &pBaseFilter);
if (FAILED(hr)) {
ReportError("Could not find a source filter for this file", hr);
return FALSE;
}
m_srcFilterArray[nLayer] = pBaseFilter;
} else {
// suppress the old src filter
IBaseFilter* pBaseFilter = m_srcFilterArray[nLayer];
RemoveFilterChain(pBaseFilter, m_pVMRBaseFilter);
pBaseFilter->Release();
m_srcFilterArray[nLayer] = NULL;
// create a new src filter
char pszFilterName[10];
sprintf(pszFilterName, "SRC%02d", nLayer);
hr = m_pGraphBuilder->AddSourceFilter(A2W(m_pszFileName), A2W(pszFilterName), &pBaseFilter);
m_srcFilterArray[nLayer] = pBaseFilter;
if (FAILED(hr)) {
m_srcFilterArray[nLayer] = NULL;
ReportError("Could not load the file", hr);
return FALSE;
}
}
// RENDER the graph
BOOL bRet = RenderGraph();
if (!bRet) return bRet;
return TRUE;
}
