Re: Converting to using templates
tech wrote:
Thanks, but how i can have a virtual template Encode function
for example i have the following G711 concrete implmentation
unsigned char CG711ULAW::Encode(signed short data )
{
return linear2ulaw(data);
}
i can't do this can i?
template<typename T>
virtual unsigned char Encode(T ibuf ) = 0;
Right, you can't do that.
You either have to make your class hierarchy templated, or you'll need
to make Encode functions for all types that might go through the
SendData function. You'll want to enforce that with some kind of
metafunction and boost::enable_if, if possible (you're not constrained,
as I once was, from using boost).
You could look up "Non-Virtual Interface" too...I don't know what help
it will offer.
A templated class structure would look like so:
template < typename T >
class Top
{
public:
unsigned char(T elem) const = 0;
// this function is probably not changing the class? const
}:
template < typename T >
class Bottom : public Top<T>
{
public:
unsigned char(T elem) const { ...implement...}
};
There are other, more complex structures I can think of that could solve
problems like this, but in the end it's something you need to do
specific to your needs. So look into the above, NVI, and possibly the
curiously reoccurring template pattern as tools that you could build a
solution from.