virtual void initialize(const video_format_desc& format_desc) = 0;\r
virtual std::wstring print() const = 0;\r
virtual bool has_synchronization_clock() const {return true;}\r
virtual void initialize(const video_format_desc& format_desc) = 0;\r
virtual std::wstring print() const = 0;\r
virtual bool has_synchronization_clock() const {return true;}\r