2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>
\r
4 * This file is part of CasparCG.
\r
6 * CasparCG is free software: you can redistribute it and/or modify
\r
7 * it under the terms of the GNU General Public License as published by
\r
8 * the Free Software Foundation, either version 3 of the License, or
\r
9 * (at your option) any later version.
\r
11 * CasparCG is distributed in the hope that it will be useful,
\r
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
\r
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\r
14 * GNU General Public License for more details.
\r
16 * You should have received a copy of the GNU General Public License
\r
17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
\r
20 #include "../StdAfx.h"
\r
22 #include "frame_consumer.h"
\r
24 #include <common/env.h>
\r
25 #include <common/memory/safe_ptr.h>
\r
26 #include <common/exception/exceptions.h>
\r
28 #include <concurrent_vector.h>
\r
30 namespace caspar { namespace core {
\r
32 size_t consumer_buffer_depth()
\r
34 return env::properties().get("configuration.consumers.buffer-depth", 5);
\r
37 struct destruction_context
\r
39 std::shared_ptr<frame_consumer> consumer;
\r
40 Concurrency::event event;
\r
42 destruction_context(std::shared_ptr<frame_consumer>&& consumer)
\r
43 : consumer(consumer)
\r
48 void __cdecl destroy_consumer(LPVOID lpParam)
\r
50 auto destruction = std::unique_ptr<destruction_context>(static_cast<destruction_context*>(lpParam));
\r
54 if(destruction->consumer.unique())
\r
56 Concurrency::scoped_oversubcription_token oversubscribe;
\r
57 destruction->consumer.reset();
\r
60 CASPAR_LOG(warning) << destruction->consumer->print() << " Not destroyed asynchronously.";
\r
64 CASPAR_LOG_CURRENT_EXCEPTION();
\r
67 destruction->event.set();
\r
70 void __cdecl destroy_and_wait_consumer(LPVOID lpParam)
\r
74 auto destruction = static_cast<destruction_context*>(lpParam);
\r
75 Concurrency::CurrentScheduler::ScheduleTask(destroy_consumer, lpParam);
\r
76 if(destruction->event.wait(1000) == Concurrency::COOPERATIVE_WAIT_TIMEOUT)
\r
77 CASPAR_LOG(warning) << " Potential destruction deadlock detected. Might leak resources.";
\r
81 CASPAR_LOG_CURRENT_EXCEPTION();
\r
85 class destroy_consumer_proxy : public frame_consumer
\r
87 std::shared_ptr<frame_consumer> consumer_;
\r
89 destroy_consumer_proxy(const std::shared_ptr<frame_consumer>& consumer)
\r
90 : consumer_(consumer)
\r
94 ~destroy_consumer_proxy()
\r
96 Concurrency::CurrentScheduler::ScheduleTask(destroy_consumer, new destruction_context(std::move(consumer_)));
\r
99 virtual bool send(const safe_ptr<read_frame>& frame) {return consumer_->send(frame);}
\r
100 virtual void initialize(const video_format_desc& format_desc) {return consumer_->initialize(format_desc);}
\r
101 virtual std::wstring print() const {return consumer_->print();}
\r
102 virtual bool has_synchronization_clock() const {return consumer_->has_synchronization_clock();}
\r
103 virtual const core::video_format_desc& get_video_format_desc() const {return consumer_->get_video_format_desc();}
\r
106 Concurrency::concurrent_vector<std::shared_ptr<consumer_factory_t>> g_factories;
\r
108 void register_consumer_factory(const consumer_factory_t& factory)
\r
110 g_factories.push_back(std::make_shared<consumer_factory_t>(factory));
\r
113 safe_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)
\r
116 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("params") << arg_value_info(""));
\r
118 auto consumer = frame_consumer::empty();
\r
119 std::any_of(g_factories.begin(), g_factories.end(), [&](const std::shared_ptr<consumer_factory_t>& factory) -> bool
\r
123 consumer = (*factory)(params);
\r
127 CASPAR_LOG_CURRENT_EXCEPTION();
\r
129 return consumer != frame_consumer::empty();
\r
132 if(consumer == frame_consumer::empty())
\r
133 BOOST_THROW_EXCEPTION(file_not_found() << msg_info("No match found for supplied commands. Check syntax."));
\r
135 return make_safe<destroy_consumer_proxy>(consumer);
\r