git-svn-id: https://casparcg.svn.sourceforge.net/svnroot/casparcg/server/branches...

[casparcg] / core / producer / frame_producer.h

diff --git a/core/producer/frame_producer.h b/core/producer/frame_producer.h
index 4cc401ec08ccbbffe9053552f95a1faa2520c007..3cf7e50107fcc7ad38a2acf8de243e6569b9ac27 100644 (file)
--- a/core/producer/frame_producer.h
+++ b/core/producer/frame_producer.h
@@ -21,63 +21,73 @@
 \r
 #include <common/memory/safe_ptr.h>\r
 \r
-#include "../producer/frame/basic_frame.h"\r
-#include "../producer/frame/frame_factory.h"\r
-\r
 #include <boost/noncopyable.hpp>\r
 \r
+#include <algorithm>\r
 #include <functional>\r
-#include <ostream>\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 executor;\r
+       \r
+namespace core {\r
 \r
-class frame_producer : boost::noncopyable\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
-       virtual safe_ptr<basic_frame> receive() = 0;\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>& /*producer*/) {}  // nothrow\r
+       virtual std::wstring print() const = 0; // nothrow\r
+\r
        virtual void param(const std::wstring&){}\r
 \r
-       virtual std::wstring print() const = 0;\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
-       static const safe_ptr<frame_producer>& empty()  // nothrow\r
-       {\r
-               struct empty_frame_producer : public frame_producer\r
-               {\r
-                       virtual safe_ptr<basic_frame> receive(){return basic_frame::empty();}\r
-                       virtual void set_frame_factory(const safe_ptr<frame_factory>&){}\r
-                       virtual std::wstring print() const { return L"empty";}\r
-               };\r
-               static safe_ptr<frame_producer> producer = make_safe<empty_frame_producer>();\r
-               return producer;\r
-       }       \r
-\r
-       static const safe_ptr<frame_producer>& eof()  // nothrow\r
-       {\r
-               struct eof_frame_producer : public frame_producer\r
-               {\r
-                       virtual safe_ptr<basic_frame> receive(){return basic_frame::eof();}\r
-                       virtual void set_frame_factory(const safe_ptr<frame_factory>&){}\r
-                       virtual std::wstring print() const { return L"eof";}\r
-               };\r
-               static safe_ptr<frame_producer> producer = make_safe<eof_frame_producer>();\r
-               return producer;\r
-       }\r
-};\r
+       virtual safe_ptr<basic_frame> receive(int hints) = 0;\r
+       virtual safe_ptr<core::basic_frame> last_frame() const = 0;\r
 \r
-safe_ptr<basic_frame> receive(safe_ptr<frame_producer>& producer);\r
+       static const safe_ptr<frame_producer>& empty(); // nothrow\r
+};\r
 \r
-std::wostream& operator<<(std::wostream& out, const frame_producer& producer);\r
-std::wostream& operator<<(std::wostream& out, const safe_ptr<const frame_producer>& producer);\r
+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
-\r
-void register_producer_factory(const producer_factory_t& factory);\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