* along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
*\r
*/\r
-#include "../stdafx.h"\r
+\r
+#include "../StdAfx.h"\r
\r
#include "frame_producer.h"\r
+#include "frame/basic_frame.h"\r
+#include "frame/frame_transform.h"\r
+\r
+#include "color/color_producer.h"\r
+#include "separated/separated_producer.h"\r
+\r
+#include <common/memory/safe_ptr.h>\r
+#include <common/concurrency/executor.h>\r
+#include <common/exception/exceptions.h>\r
+#include <common/utility/move_on_copy.h>\r
\r
namespace caspar { namespace core {\r
\r
+std::vector<const producer_factory_t> g_factories;\r
+ \r
+class destroy_producer_proxy : public frame_producer\r
+{\r
+ safe_ptr<frame_producer> producer_;\r
+ executor& destroy_context_;\r
+public:\r
+ destroy_producer_proxy(executor& destroy_context, const safe_ptr<frame_producer>& producer) \r
+ : producer_(producer)\r
+ , destroy_context_(destroy_context){}\r
+\r
+ ~destroy_producer_proxy()\r
+ { \r
+ if(destroy_context_.size() > 4)\r
+ CASPAR_LOG(error) << L" Potential destroyer deadlock.";\r
+\r
+ // Hacks to bypass compiler bugs.\r
+ auto mov_producer = make_move_on_copy<safe_ptr<frame_producer>>(std::move(producer_));\r
+ auto empty_producer = frame_producer::empty();\r
+ destroy_context_.begin_invoke([=]\r
+ { \r
+ //if(!mov_producer.value.unique())\r
+ // CASPAR_LOG(debug) << mov_producer.value->print() << L" Not destroyed on safe asynchronous destruction thread.";\r
+ //else\r
+ // CASPAR_LOG(debug) << mov_producer.value->print() << L" Destroying on safe asynchronous destruction thread.";\r
+ \r
+ mov_producer.value = empty_producer;\r
+ });\r
+ }\r
+\r
+ virtual safe_ptr<basic_frame> receive(int hints) {return producer_->receive(hints);}\r
+ virtual safe_ptr<basic_frame> last_frame() const {return producer_->last_frame();}\r
+ virtual std::wstring print() const {return producer_->print();}\r
+ virtual void param(const std::wstring& str) {producer_->param(str);}\r
+ virtual safe_ptr<frame_producer> get_following_producer() const {return producer_->get_following_producer();}\r
+ virtual void set_leading_producer(const safe_ptr<frame_producer>& producer) {producer_->set_leading_producer(producer);}\r
+ virtual int64_t nb_frames() const {return producer_->nb_frames();}\r
+};\r
+\r
+safe_ptr<core::frame_producer> create_destroy_producer_proxy(executor& destroy_context, const safe_ptr<frame_producer>& producer)\r
+{\r
+ return make_safe<destroy_producer_proxy>(destroy_context, producer);\r
+}\r
+\r
+class last_frame_producer : public frame_producer\r
+{\r
+ const std::wstring print_;\r
+ const safe_ptr<basic_frame> frame_;\r
+ const int64_t nb_frames_;\r
+public:\r
+ last_frame_producer(const safe_ptr<frame_producer>& producer) \r
+ : print_(producer->print())\r
+ , frame_(producer->last_frame() != basic_frame::eof() ? producer->last_frame() : basic_frame::empty())\r
+ , nb_frames_(producer->nb_frames())\r
+ {\r
+ }\r
+ \r
+ virtual safe_ptr<basic_frame> receive(int){return frame_;}\r
+ virtual safe_ptr<core::basic_frame> last_frame() const{return frame_;}\r
+ virtual std::wstring print() const{return L"dummy[" + print_ + L"]";}\r
+ virtual int64_t nb_frames() const {return nb_frames_;} \r
+};\r
+\r
struct empty_frame_producer : public frame_producer\r
{\r
- virtual safe_ptr<draw_frame> receive(){return draw_frame::eof();}\r
- virtual void initialize(const frame_processor_device_ptr&){}\r
+ virtual safe_ptr<basic_frame> receive(int){return basic_frame::empty();}\r
+ virtual safe_ptr<basic_frame> last_frame() const{return basic_frame::empty();}\r
+ virtual void set_frame_factory(const safe_ptr<frame_factory>&){}\r
+ virtual int64_t nb_frames() const {return 0;}\r
virtual std::wstring print() const { return L"empty";}\r
};\r
\r
-safe_ptr<frame_producer> frame_producer::empty()\r
+const safe_ptr<frame_producer>& frame_producer::empty() // nothrow\r
+{\r
+ static safe_ptr<frame_producer> producer = make_safe<empty_frame_producer>();\r
+ return producer;\r
+} \r
+\r
+safe_ptr<basic_frame> receive_and_follow(safe_ptr<frame_producer>& producer, int hints)\r
+{ \r
+ auto frame = producer->receive(hints);\r
+ if(frame == basic_frame::eof())\r
+ {\r
+ CASPAR_LOG(info) << producer->print() << " End Of File.";\r
+ auto following = producer->get_following_producer();\r
+ if(following != frame_producer::empty())\r
+ {\r
+ following->set_leading_producer(producer);\r
+ producer = std::move(following);\r
+ }\r
+ else\r
+ producer = make_safe<last_frame_producer>(producer);\r
+\r
+ return receive_and_follow(producer, hints);\r
+ }\r
+ return frame;\r
+}\r
+\r
+void register_producer_factory(const producer_factory_t& factory)\r
{\r
- static auto empty_producer = std::make_shared<empty_frame_producer>();\r
- return safe_ptr<frame_producer>::from_shared(empty_producer);\r
+ g_factories.push_back(factory);\r
}\r
\r
-inline std::wostream& operator<<(std::wostream& out, const frame_producer& producer)\r
+safe_ptr<core::frame_producer> do_create_producer(const safe_ptr<frame_factory>& my_frame_factory, const std::vector<std::wstring>& params)\r
{\r
- out << producer.print().c_str();\r
- return out;\r
+ if(params.empty())\r
+ BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("params") << arg_value_info(""));\r
+ \r
+ auto producer = frame_producer::empty();\r
+ std::any_of(g_factories.begin(), g_factories.end(), [&](const producer_factory_t& factory) -> bool\r
+ {\r
+ try\r
+ {\r
+ producer = factory(my_frame_factory, params);\r
+ }\r
+ catch(...)\r
+ {\r
+ CASPAR_LOG_CURRENT_EXCEPTION();\r
+ }\r
+ return producer != frame_producer::empty();\r
+ });\r
+\r
+ if(producer == frame_producer::empty())\r
+ producer = create_color_producer(my_frame_factory, params);\r
+ \r
+ return producer;\r
+}\r
+\r
+\r
+safe_ptr<core::frame_producer> create_producer(const safe_ptr<frame_factory>& my_frame_factory, const std::vector<std::wstring>& params)\r
+{ \r
+ auto producer = do_create_producer(my_frame_factory, params);\r
+ auto key_producer = frame_producer::empty();\r
+ \r
+ try // to find a key file.\r
+ {\r
+ auto params_copy = params;\r
+ if(params_copy.size() > 0)\r
+ {\r
+ params_copy[0] += L"_A";\r
+ key_producer = do_create_producer(my_frame_factory, params_copy); \r
+ if(key_producer == frame_producer::empty())\r
+ {\r
+ params_copy[0] += L"LPHA";\r
+ key_producer = do_create_producer(my_frame_factory, params_copy); \r
+ }\r
+ }\r
+ }\r
+ catch(...){}\r
+\r
+ if(producer != frame_producer::empty() && key_producer != frame_producer::empty())\r
+ producer = create_separated_producer(producer, key_producer);\r
+ \r
+ if(producer == frame_producer::empty())\r
+ {\r
+ std::wstring str;\r
+ BOOST_FOREACH(auto& param, params)\r
+ str += param + L" ";\r
+ BOOST_THROW_EXCEPTION(file_not_found() << msg_info("No match found for supplied commands. Check syntax.") << arg_value_info(narrow(str)));\r
+ }\r
+\r
+ return producer;\r
}\r
\r
}}
\ No newline at end of file
projects / casparcg / blobdiff