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#ifndef AUDIOGRAPHER_LISTED_SOURCE_H
#define AUDIOGRAPHER_LISTED_SOURCE_H
#include "types.h"
#include "source.h"
#include <list>
namespace AudioGrapher
{
template<typename T>
class ListedSource : public Source<T>
{
public:
void add_output (typename Source<T>::SinkPtr output) { outputs.push_back(output); }
void clear_outputs () { outputs.clear(); }
void remove_output (typename Source<T>::SinkPtr output) { outputs.remove(output); }
protected:
typedef std::list<typename Source<T>::SinkPtr> SinkList;
/// Helper for derived classes
void output (ProcessContext<T> const & c)
{
for (typename SinkList::iterator i = outputs.begin(); i != outputs.end(); ++i) {
(*i)->process (c);
}
}
void output (ProcessContext<T> & c)
{
if (output_size_is_one()) {
// only one output, so we can keep this non-const
outputs.front()->process (c);
} else {
output (const_cast<ProcessContext<T> const &> (c));
}
}
inline bool output_size_is_one () { return (!outputs.empty() && ++outputs.begin() == outputs.end()); }
SinkList outputs;
};
} // namespace
#endif //AUDIOGRAPHER_LISTED_SOURCE_H
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