Codec::getInternalInterface Method

template<class TItf>
smart_com<TItf> getInternalInterface( smart_com<TItf>& pItf ) const;
template<class TItf>
smart_com<TItf> getInternalInterface( REFIID riid, smart_com<TItf>& pItf ) const;

A reference to the interface requested or 0, if the interface is not supported.

Using this method, it is possible to fetch a custom interface from a codec.

To use this method, the compiler must support the __uuidof operator.

If the compiler supports the __declspec( uuid( "iid" ) ) option, an iid can be assigned to the interface this way. If the compiler does not support this option, the iid must be passed to the method as a parameter.

This example shows how to fetch an interface from a codec.

smart_com<ICodecInterface> pItf;
if( pCodec->getInternalInterface( pItf ) == 0 )
{
... // interface is not supported, so error handling
}
else
{
... // use the interface
}