#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/exception/exceptions.h>\r
+\r
+#include <concrt_extras.h>\r
+#include <concurrent_vector.h>\r
\r
namespace caspar { namespace core {\r
\r
-std::vector<const producer_factory_t> g_factories;\r
+struct destruction_context\r
+{\r
+ std::shared_ptr<frame_producer> producer;\r
+ Concurrency::event event;\r
\r
-safe_ptr<basic_frame> receive_and_follow(safe_ptr<frame_producer>& producer)\r
-{ \r
- if(producer == frame_producer::empty())\r
- return basic_frame::eof();\r
+ destruction_context(std::shared_ptr<frame_producer>&& producer) \r
+ : producer(producer)\r
+ {\r
+ }\r
+};\r
+\r
+void __cdecl destroy_producer(LPVOID lpParam)\r
+{\r
+ auto destruction = std::unique_ptr<destruction_context>(static_cast<destruction_context*>(lpParam));\r
+ \r
+ try\r
+ { \r
+ if(destruction->producer.unique())\r
+ {\r
+ Concurrency::scoped_oversubcription_token oversubscribe;\r
+ destruction->producer.reset();\r
+ }\r
+ else\r
+ CASPAR_LOG(warning) << destruction->producer->print() << " Not destroyed asynchronously."; \r
+ }\r
+ catch(...)\r
+ {\r
+ CASPAR_LOG_CURRENT_EXCEPTION();\r
+ }\r
+ \r
+ destruction->event.set();\r
+}\r
\r
- auto frame = basic_frame::eof();\r
+void __cdecl destroy_and_wait_producer(LPVOID lpParam)\r
+{\r
try\r
{\r
- frame = producer->receive();\r
+ auto destruction = static_cast<destruction_context*>(lpParam);\r
+ Concurrency::CurrentScheduler::ScheduleTask(destroy_producer, lpParam);\r
+ if(destruction->event.wait(1000) == Concurrency::COOPERATIVE_WAIT_TIMEOUT)\r
+ CASPAR_LOG(warning) << " Potential destruction deadlock detected. Might leak resources.";\r
}\r
catch(...)\r
{\r
- try\r
- {\r
- // Producer will be removed since frame == basic_frame::eof.\r
- CASPAR_LOG_CURRENT_EXCEPTION();\r
- CASPAR_LOG(warning) << producer->print() << " Failed to receive frame. Removing producer.";\r
- }\r
- catch(...){}\r
+ CASPAR_LOG_CURRENT_EXCEPTION();\r
}\r
+}\r
\r
+class destroy_producer_proxy : public frame_producer\r
+{\r
+ std::shared_ptr<frame_producer> producer_;\r
+public:\r
+ destroy_producer_proxy(const std::shared_ptr<frame_producer>& producer) \r
+ : producer_(producer)\r
+ {\r
+ }\r
+\r
+ ~destroy_producer_proxy()\r
+ { \r
+ Concurrency::CurrentScheduler::ScheduleTask(destroy_producer, new destruction_context(std::move(producer_)));\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
+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<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
+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
- following->set_leading_producer(producer);\r
- producer = std::move(following); \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);\r
+ return receive_and_follow(producer, hints);\r
}\r
return frame;\r
}\r
+ \r
+Concurrency::concurrent_vector<std::shared_ptr<producer_factory_t>> g_factories;\r
\r
void register_producer_factory(const producer_factory_t& factory)\r
{\r
- g_factories.push_back(factory);\r
+ g_factories.push_back(std::make_shared<producer_factory_t>(factory));\r
}\r
\r
safe_ptr<core::frame_producer> do_create_producer(const safe_ptr<frame_factory>& my_frame_factory, const std::vector<std::wstring>& params)\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
+ std::any_of(g_factories.begin(), g_factories.end(), [&](const std::shared_ptr<producer_factory_t>& factory) -> bool\r
{\r
try\r
{\r
- producer = factory(my_frame_factory, params);\r
+ producer = (*factory)(my_frame_factory, params);\r
}\r
catch(...)\r
{\r
\r
if(producer == frame_producer::empty())\r
producer = create_color_producer(my_frame_factory, params);\r
-\r
- if(producer == frame_producer::empty())\r
- BOOST_THROW_EXCEPTION(file_not_found() << msg_info("No match found for supplied commands. Check syntax."));\r
-\r
- return producer;\r
+ \r
+ return make_safe<destroy_producer_proxy>(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
{\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(key_producer != frame_producer::empty())\r
- return create_separated_producer(producer, key_producer);\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