2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>
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4 * This file is part of CasparCG.
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6 * CasparCG is free software: you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation, either version 3 of the License, or
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9 * (at your option) any later version.
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11 * CasparCG is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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16 * You should have received a copy of the GNU General Public License
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17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
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20 // TODO: Try to recover consumer from bad_alloc...
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21 #include "../StdAfx.h"
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24 #pragma warning (disable : 4244)
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29 #include "../video_format.h"
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30 #include "../mixer/gpu/ogl_device.h"
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31 #include "../mixer/read_frame.h"
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33 #include <common/concurrency/executor.h>
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34 #include <common/utility/assert.h>
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35 #include <common/utility/timer.h>
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36 #include <common/memory/memshfl.h>
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37 #include <common/env.h>
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39 #include <boost/circular_buffer.hpp>
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40 #include <boost/timer.hpp>
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41 #include <boost/range/algorithm.hpp>
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42 #include <boost/range/adaptors.hpp>
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43 #include <boost/property_tree/ptree.hpp>
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45 namespace caspar { namespace core {
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47 struct output::implementation
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49 const int channel_index_;
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50 const safe_ptr<diagnostics::graph> graph_;
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51 boost::timer consume_timer_;
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53 video_format_desc format_desc_;
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55 std::map<int, safe_ptr<frame_consumer>> consumers_;
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57 high_prec_timer sync_timer_;
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59 boost::circular_buffer<safe_ptr<read_frame>> frames_;
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64 implementation(const safe_ptr<diagnostics::graph>& graph, const video_format_desc& format_desc, int channel_index)
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65 : channel_index_(channel_index)
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67 , format_desc_(format_desc)
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68 , executor_(L"output")
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70 graph_->set_color("consume-time", diagnostics::color(1.0f, 0.4f, 0.0f));
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73 void add(int index, safe_ptr<frame_consumer> consumer)
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77 consumer = create_consumer_cadence_guard(consumer);
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78 consumer->initialize(format_desc_, channel_index_);
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80 executor_.invoke([&]
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82 consumers_.insert(std::make_pair(index, consumer));
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83 CASPAR_LOG(info) << print() << L" " << consumer->print() << L" Added.";
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87 void add(const safe_ptr<frame_consumer>& consumer)
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89 add(consumer->index(), consumer);
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92 void remove(int index)
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94 // Destroy consumer on calling thread:
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95 std::shared_ptr<frame_consumer> old_consumer;
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97 executor_.invoke([&]
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99 auto it = consumers_.find(index);
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100 if(it != consumers_.end())
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102 old_consumer = it->second;
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103 consumers_.erase(it);
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109 auto str = old_consumer->print();
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110 old_consumer.reset();
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111 CASPAR_LOG(info) << print() << L" " << str << L" Removed.";
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115 void remove(const safe_ptr<frame_consumer>& consumer)
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117 remove(consumer->index());
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120 void set_video_format_desc(const video_format_desc& format_desc)
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122 executor_.invoke([&]
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124 auto it = consumers_.begin();
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125 while(it != consumers_.end())
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129 it->second->initialize(format_desc_, channel_index_);
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134 CASPAR_LOG_CURRENT_EXCEPTION();
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135 CASPAR_LOG(info) << print() << L" " << it->second->print() << L" Removed.";
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136 consumers_.erase(it++);
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140 format_desc_ = format_desc;
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145 std::pair<size_t, size_t> minmax_buffer_depth() const
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147 if(consumers_.empty())
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148 return std::make_pair(0, 0);
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150 auto buffer_depths = consumers_ |
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151 boost::adaptors::map_values | // std::function is MSVC workaround
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152 boost::adaptors::transformed(std::function<int(const safe_ptr<frame_consumer>&)>([](const safe_ptr<frame_consumer>& x){return x->buffer_depth();}));
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155 return std::make_pair(*boost::range::min_element(buffer_depths), *boost::range::max_element(buffer_depths));
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158 bool has_synchronization_clock() const
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160 return boost::range::count_if(consumers_ | boost::adaptors::map_values, [](const safe_ptr<frame_consumer>& x){return x->has_synchronization_clock();}) > 0;
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163 void send(const std::pair<safe_ptr<read_frame>, std::shared_ptr<void>>& packet)
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165 executor_.begin_invoke([=]
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169 consume_timer_.restart();
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171 auto input_frame = packet.first;
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173 if(!has_synchronization_clock())
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174 sync_timer_.tick(1.0/format_desc_.fps);
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176 if(input_frame->image_size() != format_desc_.size)
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178 sync_timer_.tick(1.0/format_desc_.fps);
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182 auto minmax = minmax_buffer_depth();
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184 frames_.set_capacity(minmax.second - minmax.first + 1);
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185 frames_.push_back(input_frame);
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187 if(!frames_.full())
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190 auto it = consumers_.begin();
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191 while(it != consumers_.end())
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193 auto consumer = it->second;
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194 auto frame = frames_.at(consumer->buffer_depth()-minmax.first);
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198 if(consumer->send(frame))
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202 CASPAR_LOG(info) << print() << L" " << it->second->print() << L" Removed.";
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203 consumers_.erase(it++);
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208 CASPAR_LOG_CURRENT_EXCEPTION();
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211 consumer->initialize(format_desc_, channel_index_);
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212 if(consumer->send(frame))
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215 consumers_.erase(it++);
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219 CASPAR_LOG_CURRENT_EXCEPTION();
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220 CASPAR_LOG(error) << "Failed to recover consumer: " << consumer->print() << L". Removing it.";
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221 consumers_.erase(it++);
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226 graph_->update_value("consume-time", consume_timer_.elapsed()*format_desc_.fps*0.5);
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230 CASPAR_LOG_CURRENT_EXCEPTION();
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235 std::wstring print() const
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237 return L"output[" + boost::lexical_cast<std::wstring>(channel_index_) + L"]";
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240 boost::unique_future<boost::property_tree::wptree> info()
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242 return std::move(executor_.begin_invoke([&]() -> boost::property_tree::wptree
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244 boost::property_tree::wptree info;
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245 BOOST_FOREACH(auto& consumer, consumers_)
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247 info.add_child(L"consumers.consumer", consumer.second->info())
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248 .add(L"index", consumer.first);
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251 }, high_priority));
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255 output::output(const safe_ptr<diagnostics::graph>& graph, const video_format_desc& format_desc, int channel_index) : impl_(new implementation(graph, format_desc, channel_index)){}
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256 void output::add(int index, const safe_ptr<frame_consumer>& consumer){impl_->add(index, consumer);}
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257 void output::add(const safe_ptr<frame_consumer>& consumer){impl_->add(consumer);}
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258 void output::remove(int index){impl_->remove(index);}
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259 void output::remove(const safe_ptr<frame_consumer>& consumer){impl_->remove(consumer);}
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260 void output::send(const std::pair<safe_ptr<read_frame>, std::shared_ptr<void>>& frame) {impl_->send(frame); }
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261 void output::set_video_format_desc(const video_format_desc& format_desc){impl_->set_video_format_desc(format_desc);}
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262 boost::unique_future<boost::property_tree::wptree> output::info() const{return impl_->info();}
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