*/\r
#pragma once\r
\r
-#include "../frame/frame_fwd.h"\r
-#include "../frame/gpu_frame.h"\r
-#include "../frame/frame_factory.h"\r
+#include <common/memory/safe_ptr.h>\r
\r
#include <boost/noncopyable.hpp>\r
\r
-#include <memory>\r
+#include <algorithm>\r
+#include <functional>\r
+#include <string>\r
+#include <vector>\r
+#include <stdint.h>\r
+#include <numeric>\r
\r
-namespace caspar { namespace core {\r
+namespace caspar { \r
\r
-class frame_producer : boost::noncopyable\r
+class executor;\r
+ \r
+namespace core {\r
+\r
+class basic_frame;\r
+struct frame_factory;\r
+\r
+struct frame_producer : boost::noncopyable\r
{\r
public:\r
+ enum hints\r
+ {\r
+ NO_HINT = 0,\r
+ ALPHA_HINT = 1\r
+ };\r
+\r
virtual ~frame_producer(){} \r
\r
- ////////////////////////////////////////////////////////////////////////////////////////////////////\r
- /// \fn virtual gpu_frame_ptr :::render_frame() = 0;\r
- ///\r
- /// \brief Renders a frame.\r
- /// \r
- /// \note This function is run in through the tbb task_schedular and shall be *non blocking*.\r
- ///\r
- /// \return The frame. \r
- ////////////////////////////////////////////////////////////////////////////////////////////////////\r
- virtual gpu_frame_ptr render_frame() = 0;\r
-\r
- ////////////////////////////////////////////////////////////////////////////////////////////////////\r
- /// \fn virtual std::shared_ptr<frame_producer> :::get_following_producer() const\r
- ///\r
- /// \brief Gets the producer which will replace the current producer on EOF. \r
- ///\r
- /// \return The following producer, or nullptr if there is no following producer. \r
- ////////////////////////////////////////////////////////////////////////////////////////////////////\r
- virtual std::shared_ptr<frame_producer> get_following_producer() const { return nullptr; }\r
-\r
- ////////////////////////////////////////////////////////////////////////////////////////////////////\r
- /// \fn virtual void :::set_leading_producer(const std::shared_ptr<frame_producer>& producer)\r
- ///\r
- /// \brief Sets the producer which was run before the current producer. \r
- ///\r
- /// \param producer The leading producer.\r
- ////////////////////////////////////////////////////////////////////////////////////////////////////\r
- virtual void set_leading_producer(const std::shared_ptr<frame_producer>& /*producer*/) {}\r
-\r
- ////////////////////////////////////////////////////////////////////////////////////////////////////\r
- /// \fn virtual const frame_format_desc& :::get_frame_format_desc() const = 0;\r
- ///\r
- /// \brief Gets the frame format description. \r
- ///\r
- /// \return The frame format description. \r
- ////////////////////////////////////////////////////////////////////////////////////////////////////\r
- virtual const frame_format_desc& get_frame_format_desc() const = 0;\r
-\r
- ////////////////////////////////////////////////////////////////////////////////////////////////////\r
- /// \fn virtual void :::initialize(const frame_factory_ptr& factory) = 0;\r
- ///\r
- /// \brief Provides the frame factory used to create frames and initializes the producer. \r
- ///\r
- /// \param factory The frame factory. \r
- ////////////////////////////////////////////////////////////////////////////////////////////////////\r
- virtual void initialize(const frame_factory_ptr& factory) = 0;\r
+ virtual std::wstring print() const = 0; // nothrow\r
+\r
+ virtual void param(const std::wstring&){}\r
+\r
+ virtual safe_ptr<frame_producer> get_following_producer() const {return frame_producer::empty();} // nothrow\r
+ virtual void set_leading_producer(const safe_ptr<frame_producer>&) {} // nothrow\r
+ \r
+ virtual int64_t nb_frames() const {return std::numeric_limits<int>::max();}\r
+ \r
+ virtual safe_ptr<basic_frame> receive(int hints) = 0;\r
+ virtual safe_ptr<core::basic_frame> last_frame() const = 0;\r
+\r
+ static const safe_ptr<frame_producer>& empty(); // nothrow\r
};\r
-typedef std::shared_ptr<frame_producer> frame_producer_ptr;\r
\r
-}}
\ No newline at end of file
+safe_ptr<basic_frame> receive_and_follow(safe_ptr<frame_producer>& producer, int hints);\r
+\r
+typedef std::function<safe_ptr<core::frame_producer>(const safe_ptr<frame_factory>&, const std::vector<std::wstring>&)> producer_factory_t;\r
+void register_producer_factory(const producer_factory_t& factory); // Not thread-safe.\r
+safe_ptr<core::frame_producer> create_producer(const safe_ptr<frame_factory>&, const std::vector<std::wstring>& params);\r
+\r
+safe_ptr<core::frame_producer> create_destroy_producer_proxy(executor& destroy_context, const safe_ptr<frame_producer>& producer);\r
+\r
+template<typename T>\r
+typename std::decay<T>::type get_param(const std::wstring& name, const std::vector<std::wstring>& params, T fail_value)\r
+{ \r
+ auto it = std::find(params.begin(), params.end(), name);\r
+ if(it == params.end() || ++it == params.end()) \r
+ return fail_value;\r
+ \r
+ T value = fail_value;\r
+ try\r
+ {\r
+ value = boost::lexical_cast<std::decay<T>::type>(*it);\r
+ }\r
+ catch(boost::bad_lexical_cast&){}\r
+\r
+ return value;\r
+}\r
+\r
+}}\r