Templated operator>>

When trying to use the following code:

Code:

template<class T>
class StreamSource
{
	T source;
public:
	StreamSource() : source()
	{
	}

	const T& getSource()
	{
		return source;
	}

	template<class Y>
	VideoStream<T, Y> operator>>(Y* nextObject)
	{
		return VideoStream<T, Y>(this, nextObject);
	}
};

Gives me the following compiler output:

Code:

VideoStream.h(44) : error C2665: 'VideoStream<T,Y>::VideoStream' : none of the 3 
overloads could convert all the argument types
1>        with
1>        [
1>            T=Source,
1>            Y=Etc
1>        ]
k:\felipe\projects\scarvideo\scarvideo\VideoStream.h(14): could be 'VideoStream<T,Y>::VideoStream(T *,Y *)'
1>        with
1>        [
1>            T=Source,
1>            Y=Etc
1>        ]
while trying to match the argument list '(StreamSource<T> *const , Etc *)'
1>        with
1>        [
1>            T=Source
1>        ]
.\main.cpp(47) : see reference to function template instantiation 'VideoStream<T,Y>
 StreamSource<T>::operator >><Etc>(Y *)' being compiled
1>        with
1>        [
1>            T=Source,
1>            Y=Etc
1>        ]

All i wanted to do is to create the object VideoStream with the first type the same of the VideoSource::source type and the second type of the type provided by the operator>>. What´s wrong?

Code:

VideoStream<T, Y> operator>>(Y* nextObject)
	{
		return VideoStream<T, Y>(this, nextObject);
	}

These two types need to agree.

Code:

template<class T, class Y>
class VideoStream
{
	T* left;
	Y* right;
public:
	/*VideoStream() : left(), right() 
	{
	}*/

	VideoStream(T left, Y right)
	{
		this->left  = left;
		this->right = right;
	}

	void nextFrame(unsigned char** buffer)
	{
		left->nextFrame(buffer);
		right->nextFrame(buffer);
	}
};

template<class T>
class StreamSource
{
	T source;
public:
	StreamSource() : source()
	{
	}

	const T& getSource()
	{
		return source;
	}

	template<class Y>
	VideoStream<T*, Y*> operator>>(Y* nextObject)
	{
		return VideoStream<T*, Y*>(this, nextObject);
	}
};

Even matching types, i still get errors, now i have posted the VideoStream class too. Ideas?

in the VideoStream constructor you are attempting to initialize 'left' and 'right' with non-pointers. correct that and use the orignal code for StreamSource and it should work. BTW, the use of that operator overload seems a bit convoluted...

You have the same problem in VideoStream:

Code:

VideoStream(T left, Y right)
{
	this->left  = left;
	this->right = right;
}

this->left and this->right are of types T* and Y*. left and right are of types T and Y. These do not agree.