-/*\r
-* copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
-*\r
-* This file is part of CasparCG.\r
-*\r
-* CasparCG is free software: you can redistribute it and/or modify\r
-* it under the terms of the GNU General Public License as published by\r
-* the Free Software Foundation, either version 3 of the License, or\r
-* (at your option) any later version.\r
-*\r
-* CasparCG is distributed in the hope that it will be useful,\r
-* but WITHOUT ANY WARRANTY; without even the implied warranty of\r
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
-* GNU General Public License for more details.\r
-\r
-* You should have received a copy of the GNU General Public License\r
-* along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
-*\r
-*/\r
-#include "../StdAfx.h"\r
-\r
-#include "frame_consumer.h"\r
-\r
-#include <common/env.h>\r
-#include <common/memory/safe_ptr.h>\r
-#include <common/exception/exceptions.h>\r
-\r
-#include <concurrent_vector.h>\r
-\r
-namespace caspar { namespace core {\r
- \r
-size_t consumer_buffer_depth()\r
-{\r
- return env::properties().get("configuration.consumers.buffer-depth", 5);\r
-}\r
-\r
-struct destruction_context\r
-{\r
- std::shared_ptr<frame_consumer> consumer;\r
- Concurrency::event event;\r
-\r
- destruction_context(std::shared_ptr<frame_consumer>&& consumer) \r
- : consumer(consumer)\r
- {\r
- }\r
-};\r
-\r
-void __cdecl destroy_consumer(LPVOID lpParam)\r
-{\r
- auto destruction = std::unique_ptr<destruction_context>(static_cast<destruction_context*>(lpParam));\r
- \r
- try\r
- { \r
- if(destruction->consumer.unique())\r
- {\r
- Concurrency::scoped_oversubcription_token oversubscribe;\r
- destruction->consumer.reset();\r
- }\r
- else\r
- CASPAR_LOG(warning) << destruction->consumer->print() << " Not destroyed asynchronously."; \r
- }\r
- catch(...)\r
- {\r
- CASPAR_LOG_CURRENT_EXCEPTION();\r
- }\r
- \r
- destruction->event.set();\r
-}\r
-\r
-void __cdecl destroy_and_wait_consumer(LPVOID lpParam)\r
-{\r
- try\r
- {\r
- auto destruction = static_cast<destruction_context*>(lpParam);\r
- Concurrency::CurrentScheduler::ScheduleTask(destroy_consumer, 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
- CASPAR_LOG_CURRENT_EXCEPTION();\r
- }\r
-}\r
- \r
-class destroy_consumer_proxy : public frame_consumer\r
-{\r
- std::shared_ptr<frame_consumer> consumer_;\r
-public:\r
- destroy_consumer_proxy(const std::shared_ptr<frame_consumer>& consumer) \r
- : consumer_(consumer)\r
- {\r
- }\r
-\r
- ~destroy_consumer_proxy()\r
- { \r
- Concurrency::CurrentScheduler::ScheduleTask(destroy_consumer, new destruction_context(std::move(consumer_)));\r
- } \r
- \r
- virtual bool send(const safe_ptr<read_frame>& frame) {return consumer_->send(frame);}\r
- virtual void initialize(const video_format_desc& format_desc) {return consumer_->initialize(format_desc);}\r
- virtual std::wstring print() const {return consumer_->print();}\r
- virtual bool has_synchronization_clock() const {return consumer_->has_synchronization_clock();}\r
- virtual const core::video_format_desc& get_video_format_desc() const {return consumer_->get_video_format_desc();}\r
- virtual size_t buffer_depth() const {return consumer_->buffer_depth();}\r
-};\r
-\r
-Concurrency::concurrent_vector<std::shared_ptr<consumer_factory_t>> g_factories;\r
-\r
-void register_consumer_factory(const consumer_factory_t& factory)\r
-{\r
- g_factories.push_back(std::make_shared<consumer_factory_t>(factory));\r
-}\r
-\r
-safe_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
-{\r
- if(params.empty())\r
- BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("params") << arg_value_info(""));\r
- \r
- auto consumer = frame_consumer::empty();\r
- std::any_of(g_factories.begin(), g_factories.end(), [&](const std::shared_ptr<consumer_factory_t>& factory) -> bool\r
- {\r
- try\r
- {\r
- consumer = (*factory)(params);\r
- }\r
- catch(...)\r
- {\r
- CASPAR_LOG_CURRENT_EXCEPTION();\r
- }\r
- return consumer != frame_consumer::empty();\r
- });\r
-\r
- if(consumer == frame_consumer::empty())\r
- BOOST_THROW_EXCEPTION(file_not_found() << msg_info("No match found for supplied commands. Check syntax."));\r
-\r
- return make_safe<destroy_consumer_proxy>(consumer);\r
-}\r
-\r
+/*
+* Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
+*
+* This file is part of CasparCG (www.casparcg.com).
+*
+* CasparCG is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* CasparCG is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
+*
+* Author: Robert Nagy, ronag89@gmail.com
+*/
+
+#include "../StdAfx.h"
+
+#include "frame_consumer.h"
+
+#include <common/except.h>
+
+#include <core/video_format.h>
+#include <core/frame/frame.h>
+
+#include <boost/thread.hpp>
+
+namespace caspar { namespace core {
+
+std::vector<const consumer_factory_t> g_factories;
+
+void register_consumer_factory(const consumer_factory_t& factory)
+{
+ g_factories.push_back(factory);
+}
+
+class destroy_consumer_proxy : public frame_consumer
+{
+ std::shared_ptr<frame_consumer> consumer_;
+public:
+ destroy_consumer_proxy(spl::shared_ptr<frame_consumer>&& consumer)
+ : consumer_(std::move(consumer))
+ {
+ }
+
+ ~destroy_consumer_proxy()
+ {
+ static tbb::atomic<int> counter = tbb::atomic<int>();
+
+ ++counter;
+ CASPAR_VERIFY(counter < 8);
+
+ auto consumer = new std::shared_ptr<frame_consumer>(std::move(consumer_));
+ boost::thread([=]
+ {
+ std::unique_ptr<std::shared_ptr<frame_consumer>> pointer_guard(consumer);
+
+ auto str = (*consumer)->print();
+ try
+ {
+ if(!consumer->unique())
+ CASPAR_LOG(trace) << str << L" Not destroyed on asynchronous destruction thread: " << consumer->use_count();
+ else
+ CASPAR_LOG(trace) << str << L" Destroying on asynchronous destruction thread.";
+ }
+ catch(...){}
+
+ pointer_guard.reset();
+
+ --counter;
+ }).detach();
+ }
+
+ bool send(const_frame frame) override {return consumer_->send(std::move(frame));}
+ virtual void initialize(const struct video_format_desc& format_desc, int channel_index) override {return consumer_->initialize(format_desc, channel_index);}
+ std::wstring print() const override {return consumer_->print();}
+ std::wstring name() const override {return consumer_->name();}
+ boost::property_tree::wptree info() const override {return consumer_->info();}
+ bool has_synchronization_clock() const override {return consumer_->has_synchronization_clock();}
+ int buffer_depth() const override {return consumer_->buffer_depth();}
+ int index() const override {return consumer_->index();}
+ void subscribe(const monitor::observable::observer_ptr& o) override {consumer_->subscribe(o);}
+ void unsubscribe(const monitor::observable::observer_ptr& o) override {consumer_->unsubscribe(o);}
+};
+
+class print_consumer_proxy : public frame_consumer
+{
+ std::shared_ptr<frame_consumer> consumer_;
+public:
+ print_consumer_proxy(spl::shared_ptr<frame_consumer>&& consumer)
+ : consumer_(std::move(consumer))
+ {
+ CASPAR_LOG(info) << consumer_->print() << L" Initialized.";
+ }
+
+ ~print_consumer_proxy()
+ {
+ auto str = consumer_->print();
+ CASPAR_LOG(trace) << str << L" Uninitializing.";
+ consumer_.reset();
+ CASPAR_LOG(info) << str << L" Uninitialized.";
+ }
+
+ bool send(const_frame frame) override {return consumer_->send(std::move(frame));}
+ virtual void initialize(const struct video_format_desc& format_desc, int channel_index) override {return consumer_->initialize(format_desc, channel_index);}
+ std::wstring print() const override {return consumer_->print();}
+ std::wstring name() const override {return consumer_->name();}
+ boost::property_tree::wptree info() const override {return consumer_->info();}
+ bool has_synchronization_clock() const override {return consumer_->has_synchronization_clock();}
+ int buffer_depth() const override {return consumer_->buffer_depth();}
+ int index() const override {return consumer_->index();}
+ void subscribe(const monitor::observable::observer_ptr& o) override {consumer_->subscribe(o);}
+ void unsubscribe(const monitor::observable::observer_ptr& o) override {consumer_->unsubscribe(o);}
+};
+
+class recover_consumer_proxy : public frame_consumer
+{
+ std::shared_ptr<frame_consumer> consumer_;
+ int channel_index_;
+ video_format_desc format_desc_;
+public:
+ recover_consumer_proxy(spl::shared_ptr<frame_consumer>&& consumer)
+ : consumer_(std::move(consumer))
+ {
+ }
+
+ virtual bool send(const_frame frame)
+ {
+ try
+ {
+ return consumer_->send(frame);
+ }
+ catch(...)
+ {
+ CASPAR_LOG_CURRENT_EXCEPTION();
+ try
+ {
+ consumer_->initialize(format_desc_, channel_index_);
+ return consumer_->send(frame);
+ }
+ catch(...)
+ {
+ CASPAR_LOG_CURRENT_EXCEPTION();
+ CASPAR_LOG(error) << print() << " Failed to recover consumer.";
+ return false;
+ }
+ }
+ }
+
+ virtual void initialize(const struct video_format_desc& format_desc, int channel_index)
+ {
+ format_desc_ = format_desc;
+ channel_index_ = channel_index;
+ return consumer_->initialize(format_desc, channel_index);
+ }
+
+ std::wstring print() const override {return consumer_->print();}
+ std::wstring name() const override {return consumer_->name();}
+ boost::property_tree::wptree info() const override {return consumer_->info();}
+ bool has_synchronization_clock() const override {return consumer_->has_synchronization_clock();}
+ int buffer_depth() const override {return consumer_->buffer_depth();}
+ int index() const override {return consumer_->index();}
+ void subscribe(const monitor::observable::observer_ptr& o) override {consumer_->subscribe(o);}
+ void unsubscribe(const monitor::observable::observer_ptr& o) override {consumer_->unsubscribe(o);}
+};
+
+// This class is used to guarantee that audio cadence is correct. This is important for NTSC audio.
+class cadence_guard : public frame_consumer
+{
+ spl::shared_ptr<frame_consumer> consumer_;
+ std::vector<int> audio_cadence_;
+ boost::circular_buffer<std::size_t> sync_buffer_;
+public:
+ cadence_guard(const spl::shared_ptr<frame_consumer>& consumer)
+ : consumer_(consumer)
+ {
+ }
+
+ void initialize(const video_format_desc& format_desc, int channel_index) override
+ {
+ audio_cadence_ = format_desc.audio_cadence;
+ sync_buffer_ = boost::circular_buffer<std::size_t>(format_desc.audio_cadence.size());
+ consumer_->initialize(format_desc, channel_index);
+ }
+
+ bool send(const_frame frame) override
+ {
+ if(audio_cadence_.size() == 1)
+ return consumer_->send(frame);
+
+ bool result = true;
+
+ if(boost::range::equal(sync_buffer_, audio_cadence_) && audio_cadence_.front() == static_cast<int>(frame.audio_data().size()))
+ {
+ // Audio sent so far is in sync, now we can send the next chunk.
+ result = consumer_->send(frame);
+ boost::range::rotate(audio_cadence_, std::begin(audio_cadence_)+1);
+ }
+ else
+ CASPAR_LOG(trace) << print() << L" Syncing audio.";
+
+ sync_buffer_.push_back(static_cast<int>(frame.audio_data().size()));
+
+ return result;
+ }
+
+ std::wstring print() const override {return consumer_->print();}
+ std::wstring name() const override {return consumer_->name();}
+ boost::property_tree::wptree info() const override {return consumer_->info();}
+ bool has_synchronization_clock() const override {return consumer_->has_synchronization_clock();}
+ int buffer_depth() const override {return consumer_->buffer_depth();}
+ int index() const override {return consumer_->index();}
+ void subscribe(const monitor::observable::observer_ptr& o) override {consumer_->subscribe(o);}
+ void unsubscribe(const monitor::observable::observer_ptr& o) override {consumer_->unsubscribe(o);}
+};
+
+spl::shared_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)
+{
+ if(params.empty())
+ CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("params") << arg_value_info(""));
+
+ auto consumer = frame_consumer::empty();
+ std::any_of(g_factories.begin(), g_factories.end(), [&](const consumer_factory_t& factory) -> bool
+ {
+ try
+ {
+ consumer = factory(params);
+ }
+ catch(...)
+ {
+ CASPAR_LOG_CURRENT_EXCEPTION();
+ }
+ return consumer != frame_consumer::empty();
+ });
+
+ if(consumer == frame_consumer::empty())
+ CASPAR_THROW_EXCEPTION(file_not_found() << msg_info("No match found for supplied commands. Check syntax."));
+
+ return spl::make_shared<destroy_consumer_proxy>(
+ spl::make_shared<print_consumer_proxy>(
+ spl::make_shared<recover_consumer_proxy>(
+ spl::make_shared<cadence_guard>(
+ std::move(consumer)))));
+}
+
+const spl::shared_ptr<frame_consumer>& frame_consumer::empty()
+{
+ class empty_frame_consumer : public frame_consumer
+ {
+ public:
+ bool send(const_frame) override {return false;}
+ void initialize(const video_format_desc&, int) override{}
+ std::wstring print() const override {return L"empty";}
+ std::wstring name() const override {return L"empty";}
+ bool has_synchronization_clock() const override {return false;}
+ int buffer_depth() const override {return 0;};
+ virtual int index() const{return -1;}
+ void subscribe(const monitor::observable::observer_ptr& o) override{}
+ void unsubscribe(const monitor::observable::observer_ptr& o) override{}
+ boost::property_tree::wptree info() const override
+ {
+ boost::property_tree::wptree info;
+ info.add(L"type", L"empty");
+ return info;
+ }
+ };
+ static spl::shared_ptr<frame_consumer> consumer = spl::make_shared<empty_frame_consumer>();
+ return consumer;
+}
+
}}
\ No newline at end of file
projects / casparcg / blobdiff