Пример #1
0
HRESULT CSampleCGB::FindEncoder( IEnumMoniker *pEncoders, REGPINMEDIUM pinMedium, IBaseFilter **ppEncoder )
{
	if( ! pEncoders )
	{
		return E_INVALIDARG;
	}

	if(IsEqualGUID(pinMedium.clsMedium,GUID_NULL) || IsEqualGUID(pinMedium.clsMedium,KSMEDIUMSETID_Standard))
	{
		return E_INVALIDARG;
	}

	HRESULT hr;
	SmartPtr<IBaseFilter> pFilter;
	SmartPtr<IMoniker>   pMoniker;
	ULONG cFetched;
	SmartPtr<IPin> pPin;

	while(pFilter.Release(),pMoniker.Release(),S_OK == pEncoders->Next(1,&pMoniker,&cFetched))
	{
		hr = pMoniker->BindToObject(0,0,IID_IBaseFilter,(void**)&pFilter);
		if(FAILED(hr))continue;

		hr = FindPin(pFilter,pinMedium,PINDIR_INPUT,TRUE,&pPin);
		if(SUCCEEDED(hr))
		{
			*ppEncoder = pFilter.Detach();
			return hr;
		}
	}
	return E_FAIL;
}
Пример #2
0
HRESULT 
ISampleCaptureGraphBuilder::ConnectMultiplexerToMPEG2Demux( 
                                        IBaseFilter *pEncoder, 
                                        IEnumMoniker *pMultiplexers )
{
    if( !pEncoder || !pMultiplexers )
    {
        return E_INVALIDARG;
    }

    SmartPtr<IBaseFilter> pFilter;
    SmartPtr<IMoniker>   pMoniker;
    ULONG               fetched;
    HRESULT             hr;

    while( pFilter.Release(), pMoniker.Release(), 
           S_OK == pMultiplexers->Next( 1, &pMoniker, &fetched ) )
    {
        hr = pMoniker->BindToObject(
            0, 0, IID_IBaseFilter, reinterpret_cast<void **>( &pFilter ) );
        if( FAILED( hr ) )
        {
            continue;
        }

        hr = graph_->AddFilter( pFilter, NULL );
        if( FAILED( hr ) )
        {
            continue;
        }

        //
        //  connect the encoder to the multiplexer
        //
        hr = ConnectFilters( pEncoder, pFilter );
        if( FAILED( hr ) )
        {
            graph_->RemoveFilter( pFilter );
            continue;
        }

        //
        //  connect the multiplexer to the encoder
        //
        hr = ConnectFilters( pFilter, pMPEG2Demux_ );
        if( SUCCEEDED( hr ) )
        {
            pMultiplexer_ = pFilter;
            return S_OK;
        }

    }

    return E_FAIL;
}
Пример #3
0
HRESULT 
ISampleCaptureGraphBuilder::RenderToMPEG2Demux( 
                            IPin *pPin, 
                            IEnumMoniker *pEncoders)
{
    if( !pPin || !pEncoders )
    {
        return E_INVALIDARG;
    }

    REGPINMEDIUM pinMedium ;
    pinMedium.clsMedium = GUID_NULL;
    pinMedium.dw1 = 0;
    pinMedium.dw2 = 0;

    SmartPtr<IBaseFilter> pFilter;
    SmartPtr<IMoniker>    pMoniker;
    ULONG                fetched;
    HRESULT              hr;

    while( pFilter.Release(), pMoniker.Release(), S_OK == pEncoders->Next( 1, &pMoniker, &fetched ) )
    {
        hr = pMoniker->BindToObject(
            0, 0, IID_IBaseFilter, reinterpret_cast<void **>( &pFilter ) );
        if( FAILED( hr ) )
        {
            continue;
        }

        hr = graph_->AddFilter( pFilter, L"Encoder" );
        if( FAILED( hr ) )
        {
            continue;
        }

        hr = ConnectPin( pPin, pFilter );
        if( FAILED( hr ) )
        {
            graph_->RemoveFilter( pFilter );
            continue;
        }

        hr = ConnectEncoderToMPEG2Demux( pFilter, pinMedium );
        if( SUCCEEDED( hr ) )
        {
            pEncoder_ = pFilter;
            return S_OK;
        }
        graph_->RemoveFilter( pFilter );
    }

    return E_FAIL;
}
Пример #4
0
HRESULT 
ISampleCaptureGraphBuilder::ConnectAudioPinToMultiplexer( 
                                            IPin *pPin, 
                                            IBaseFilter *pMultiplexer)
{
    if( !pPin || !pMultiplexer )
    {
        return E_INVALIDARG;
    }

    REGPINMEDIUM pinMedium;
    HRESULT hr = GetMedium( pPin, pinMedium );
    if( FAILED( hr ) )
    {
        return hr;
    }

    SmartPtr<IBaseFilter> pEncoder;
    SmartPtr<IEnumMoniker> pEncoders;

    if( FALSE == ::IsEqualGUID( pinMedium.clsMedium, GUID_NULL ) )
    {
        //
        //  search through encoders category; identify
        //  the encoder using the medium
        //
        hr = GetEncodersByCategory( &pEncoders );
        if( FAILED( hr ) )
        {
            return hr;
        }

        hr = FindEncoder( pEncoders, pinMedium, &pEncoder );
        if( SUCCEEDED( hr ) )
        {
            hr = graph_->AddFilter( pEncoder, L"Audio Encoder" );
            if( SUCCEEDED( hr ) &&
                SUCCEEDED( ConnectPin( pPin, pEncoder ) ) &&
                SUCCEEDED( ConnectFilters( pEncoder, pMultiplexer ) )
            )
            {
                return S_OK;
            }
        }
        
        
        pEncoders = NULL;
        hr = GetEncodersByEnumerating( pPin, pinMedium, &pEncoders );
        if( FAILED( hr ) )
        {
            return hr;
        }

        hr = FindEncoder( pEncoders, pinMedium, &pEncoder );
        if( SUCCEEDED( hr ) )
        {
            hr = graph_->AddFilter( pEncoder, L"Audio Encoder" );
            if( SUCCEEDED( hr ) &&
                SUCCEEDED( ConnectPin( pPin, pEncoder ) ) &&
                SUCCEEDED( ConnectFilters( pEncoder, pMultiplexer ) )
            )
            {
                return S_OK;
            }
        }
        return E_FAIL;
    }


    //
    //  Search throgh the codec category 
    //  
    hr = GetEncodersByCategory( &pEncoders );
    if( FAILED( hr ) )
    {
        return hr;
    }


    SmartPtr<IBaseFilter>    pFilter;
    SmartPtr<IMoniker>       pMoniker;
    ULONG                   fetched;
    while( pFilter.Release(), pMoniker.Release(), S_OK == pEncoders->Next( 1, &pMoniker, &fetched ) )
    {
        hr = pMoniker->BindToObject(
            0, 0, IID_IBaseFilter, reinterpret_cast<void **>( &pFilter ) );
        if( FAILED( hr ) )
        {
            continue;
        }

        hr = graph_->AddFilter( pFilter, L"Audio Encoder" );
        if( FAILED( hr ) )
        {
            continue;
        }

        hr = ConnectPin( pPin, pFilter );
        if( FAILED( hr ) )
        {
            graph_->RemoveFilter( pFilter );
            continue;
        }

        hr = ConnectFilters( pFilter, pMultiplexer );
        if( SUCCEEDED( hr ) )
        {
            return S_OK;
        }
        graph_->RemoveFilter( pFilter );
    }

    return E_FAIL;

}