2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
4 * This file is part of CasparCG (www.casparcg.com).
6 * CasparCG is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * CasparCG is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
19 * Author: Robert Nagy, ronag89@gmail.com
24 #include "video_channel.h"
26 #include "video_format.h"
28 #include "producer/stage.h"
29 #include "mixer/mixer.h"
30 #include "consumer/output.h"
31 #include "frame/frame.h"
32 #include "frame/draw_frame.h"
33 #include "frame/frame_factory.h"
34 #include "frame/audio_channel_layout.h"
36 #include <common/diagnostics/graph.h>
37 #include <common/env.h>
38 #include <common/lock.h>
39 #include <common/executor.h>
40 #include <common/timer.h>
41 #include <common/future.h>
43 #include <core/mixer/image/image_mixer.h>
44 #include <core/diagnostics/call_context.h>
46 #include <tbb/spin_mutex.h>
48 #include <boost/property_tree/ptree.hpp>
49 #include <boost/lexical_cast.hpp>
52 #include <unordered_map>
54 namespace caspar { namespace core {
56 struct video_channel::impl final
58 spl::shared_ptr<monitor::subject> monitor_subject_;
62 mutable tbb::spin_mutex format_desc_mutex_;
63 core::video_format_desc format_desc_;
64 mutable tbb::spin_mutex channel_layout_mutex_;
65 core::audio_channel_layout channel_layout_;
67 const spl::shared_ptr<caspar::diagnostics::graph> graph_ = [](int index)
69 core::diagnostics::scoped_call_context save;
70 core::diagnostics::call_context::for_thread().video_channel = index;
71 return spl::make_shared<caspar::diagnostics::graph>();
74 caspar::core::output output_;
75 std::future<void> output_ready_for_frame_ = make_ready_future();
76 spl::shared_ptr<image_mixer> image_mixer_;
77 caspar::core::mixer mixer_;
78 caspar::core::stage stage_;
80 mutable tbb::spin_mutex tick_listeners_mutex_;
81 int64_t last_tick_listener_id = 0;
82 std::unordered_map<int64_t, std::function<void ()>> tick_listeners_;
84 executor executor_ { L"video_channel " + boost::lexical_cast<std::wstring>(index_) };
88 const core::video_format_desc& format_desc,
89 const core::audio_channel_layout& channel_layout,
90 std::unique_ptr<image_mixer> image_mixer)
91 : monitor_subject_(spl::make_shared<monitor::subject>(
92 "/channel/" + boost::lexical_cast<std::string>(index)))
94 , format_desc_(format_desc)
95 , channel_layout_(channel_layout)
96 , output_(graph_, format_desc, channel_layout, index)
97 , image_mixer_(std::move(image_mixer))
98 , mixer_(index, graph_, image_mixer_)
99 , stage_(index, graph_)
101 graph_->set_color("tick-time", caspar::diagnostics::color(0.0f, 0.6f, 0.9f));
102 graph_->set_text(print());
103 caspar::diagnostics::register_graph(graph_);
105 output_.monitor_output().attach_parent(monitor_subject_);
106 mixer_.monitor_output().attach_parent(monitor_subject_);
107 stage_.monitor_output().attach_parent(monitor_subject_);
109 executor_.begin_invoke([=]{tick();});
111 CASPAR_LOG(info) << print() << " Successfully Initialized.";
116 CASPAR_LOG(info) << print() << " Uninitializing.";
119 core::video_format_desc video_format_desc() const
121 return lock(format_desc_mutex_, [&]
127 void video_format_desc(const core::video_format_desc& format_desc)
129 lock(format_desc_mutex_, [&]
131 format_desc_ = format_desc;
136 core::audio_channel_layout audio_channel_layout() const
138 return lock(channel_layout_mutex_, [&]
140 return channel_layout_;
144 void audio_channel_layout(const core::audio_channel_layout& channel_layout)
146 lock(channel_layout_mutex_, [&]
148 channel_layout_ = channel_layout;
153 void invoke_tick_listeners()
155 auto listeners = lock(tick_listeners_mutex_, [=] { return tick_listeners_; });
157 for (auto listener : listeners)
165 CASPAR_LOG_CURRENT_EXCEPTION();
174 invoke_tick_listeners();
176 auto format_desc = video_format_desc();
177 auto channel_layout = audio_channel_layout();
179 caspar::timer frame_timer;
183 auto stage_frames = stage_(format_desc);
187 auto mixed_frame = mixer_(std::move(stage_frames), format_desc, channel_layout);
191 output_ready_for_frame_ = output_(std::move(mixed_frame), format_desc, channel_layout);
192 output_ready_for_frame_.get();
194 auto frame_time = frame_timer.elapsed()*format_desc.fps*0.5;
195 graph_->set_value("tick-time", frame_time);
197 *monitor_subject_ << monitor::message("/profiler/time") % frame_timer.elapsed() % (1.0/ video_format_desc().fps)
198 << monitor::message("/format") % format_desc.name;
202 CASPAR_LOG_CURRENT_EXCEPTION();
205 if (executor_.is_running())
206 executor_.begin_invoke([=]{tick();});
209 std::wstring print() const
211 return L"video_channel[" + boost::lexical_cast<std::wstring>(index_) + L"|" + video_format_desc().name + L"]";
219 boost::property_tree::wptree info() const
221 boost::property_tree::wptree info;
223 auto stage_info = stage_.info();
224 auto mixer_info = mixer_.info();
225 auto output_info = output_.info();
227 info.add(L"video-mode", video_format_desc().name);
228 info.add(L"audio-channel-layout", audio_channel_layout().print());
229 info.add_child(L"stage", stage_info.get());
230 info.add_child(L"mixer", mixer_info.get());
231 info.add_child(L"output", output_info.get());
236 boost::property_tree::wptree delay_info() const
238 boost::property_tree::wptree info;
240 auto stage_info = stage_.delay_info();
241 auto mixer_info = mixer_.delay_info();
242 auto output_info = output_.delay_info();
244 // TODO: because of std::async deferred timed waiting does not work so for now we have to block
245 info.add_child(L"layers", stage_info.get());
246 info.add_child(L"mix-time", mixer_info.get());
247 info.add_child(L"output", output_info.get());
252 std::shared_ptr<void> add_tick_listener(std::function<void()> listener)
254 return lock(tick_listeners_mutex_, [&]
256 auto tick_listener_id = last_tick_listener_id++;
257 tick_listeners_.insert(std::make_pair(tick_listener_id, listener));
259 return std::shared_ptr<void>(nullptr, [=](void*)
261 lock(tick_listeners_mutex_, [&]
263 tick_listeners_.erase(tick_listener_id);
270 video_channel::video_channel(
272 const core::video_format_desc& format_desc,
273 const core::audio_channel_layout& channel_layout,
274 std::unique_ptr<image_mixer> image_mixer) : impl_(new impl(index, format_desc, channel_layout, std::move(image_mixer))){}
275 video_channel::~video_channel(){}
276 const stage& video_channel::stage() const { return impl_->stage_;}
277 stage& video_channel::stage() { return impl_->stage_;}
278 const mixer& video_channel::mixer() const{ return impl_->mixer_;}
279 mixer& video_channel::mixer() { return impl_->mixer_;}
280 const output& video_channel::output() const { return impl_->output_;}
281 output& video_channel::output() { return impl_->output_;}
282 spl::shared_ptr<frame_factory> video_channel::frame_factory() { return impl_->image_mixer_;}
283 core::video_format_desc video_channel::video_format_desc() const{return impl_->video_format_desc();}
284 void core::video_channel::video_format_desc(const core::video_format_desc& format_desc){impl_->video_format_desc(format_desc);}
285 core::audio_channel_layout video_channel::audio_channel_layout() const { return impl_->audio_channel_layout(); }
286 void core::video_channel::audio_channel_layout(const core::audio_channel_layout& channel_layout) { impl_->audio_channel_layout(channel_layout); }
287 boost::property_tree::wptree video_channel::info() const{return impl_->info();}
288 boost::property_tree::wptree video_channel::delay_info() const { return impl_->delay_info(); }
289 int video_channel::index() const { return impl_->index(); }
290 monitor::subject& video_channel::monitor_output(){ return *impl_->monitor_subject_; }
291 std::shared_ptr<void> video_channel::add_tick_listener(std::function<void()> listener) { return impl_->add_tick_listener(std::move(listener)); }