2.0. imag

[casparcg] / core / producer / frame_producer.h

diff --git a/core/producer/frame_producer.h b/core/producer/frame_producer.h
index 705ce64110f7fbfbba32761f53b4b23676028bf0..d2b1becdf9f83ba04bb4d35aa1941feabe03a203 100644 (file)
--- a/core/producer/frame_producer.h
+++ b/core/producer/frame_producer.h
@@ -21,22 +21,30 @@
 \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 <functional>\r
 #include <string>\r
+#include <vector>\r
+#include <stdint.h>\r
+#include <numeric>\r
 \r
 namespace caspar { 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 std::wstring print() const = 0; // nothrow\r
 \r
        virtual void param(const std::wstring&){}\r
@@ -44,20 +52,15 @@ public:
        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
-       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
+       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
 \r
-safe_ptr<basic_frame> receive_and_follow(safe_ptr<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
 void register_producer_factory(const producer_factory_t& factory); // Not thread-safe.\r