git.sesse.net Git - casparcg/blob - core/video_channel.cpp

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\r
   5 *\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
  10 *\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
  15 *\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
  18 *\r
  19 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 #include "StdAfx.h"\r
  23 \r
  24 #include "video_channel.h"\r
  25 \r
  26 #include "video_format.h"\r
  27 \r
  28 #include "producer/stage.h"\r
  29 #include "mixer/mixer.h"\r
  30 #include "consumer/output.h"\r
  31 #include "frame/frame.h"\r
  32 #include "frame/draw_frame.h"\r
  33 #include "frame/frame_factory.h"\r
  34 \r
  35 #include <common/diagnostics/graph.h>\r
  36 #include <common/env.h>\r
  37 #include <common/lock.h>\r
  38 #include <common/executor.h>\r
  39 \r
  40 #include <core/mixer/image/image_mixer.h>\r
  41 \r
  42 #include <tbb/spin_mutex.h>\r
  43 \r
  44 #include <boost/property_tree/ptree.hpp>\r
  45 \r
  46 #include <string>\r
  47 \r
  48 namespace caspar { namespace core {\r
  49 \r
  50 struct video_channel::impl sealed\r
  51 {\r
  52         monitor::basic_subject                                                  event_subject_;\r
  53 \r
  54         const int                                                                               index_;\r
  55 \r
  56         mutable tbb::spin_mutex                                                 format_desc_mutex_;\r
  57         core::video_format_desc                                                 format_desc_;\r
  58         \r
  59         const spl::shared_ptr<diagnostics::graph>               graph_;\r
  60 \r
  61         caspar::core::output                                                    output_;\r
  62         spl::shared_ptr<image_mixer>                                    image_mixer_;\r
  63         caspar::core::mixer                                                             mixer_;\r
  64         caspar::core::stage                                                             stage_; \r
  65 \r
  66         executor                                                                                executor_;\r
  67 public:\r
  68         impl(int index, const core::video_format_desc& format_desc, std::unique_ptr<image_mixer> image_mixer)  \r
  69                 : event_subject_(monitor::path() % "channel" % index)\r
  70                 , index_(index)\r
  71                 , format_desc_(format_desc)\r
  72                 , output_(graph_, format_desc, index)\r
  73                 , image_mixer_(std::move(image_mixer))\r
  74                 , mixer_(graph_, image_mixer_)\r
  75                 , stage_(graph_)\r
  76                 , executor_(L"video_channel")\r
  77         {\r
  78                 graph_->set_color("tick-time", diagnostics::color(0.0f, 0.6f, 0.9f));   \r
  79                 graph_->set_text(print());\r
  80                 diagnostics::register_graph(graph_);\r
  81 \r
  82                 stage_.subscribe(event_subject_);\r
  83 \r
  84                 executor_.begin_invoke([=]{tick();});\r
  85 \r
  86                 CASPAR_LOG(info) << print() << " Successfully Initialized.";\r
  87         }\r
  88                                                         \r
  89         core::video_format_desc video_format_desc() const\r
  90         {\r
  91                 return lock(format_desc_mutex_, [&]\r
  92                 {\r
  93                         return format_desc_;\r
  94                 });\r
  95         }\r
  96                 \r
  97         void video_format_desc(const core::video_format_desc& format_desc)\r
  98         {\r
  99                 lock(format_desc_mutex_, [&]\r
 100                 {\r
 101                         format_desc_ = format_desc;\r
 102                         stage_.clear();\r
 103                 });\r
 104         }\r
 105 \r
 106         void tick()\r
 107         {\r
 108                 try\r
 109                 {\r
 110                         auto format_desc = video_format_desc();\r
 111 \r
 112                         boost::timer frame_timer;\r
 113 \r
 114                         // Produce\r
 115                         \r
 116                         auto stage_frames = stage_(format_desc);\r
 117 \r
 118                         // Mix\r
 119                         \r
 120                         auto mixed_frame  = mixer_(std::move(stage_frames), format_desc);\r
 121 \r
 122                         // Consume\r
 123                                                 \r
 124                         output_(std::move(mixed_frame), format_desc);\r
 125                 \r
 126                         graph_->set_value("tick-time", frame_timer.elapsed()*format_desc.fps*0.5);\r
 127 \r
 128                         event_subject_  << monitor::event("profiler/time")      % frame_timer.elapsed() % (1.0/format_desc_.fps)\r
 129                                                         << monitor::event("format")                     % format_desc.name;\r
 130                 }\r
 131                 catch(...)\r
 132                 {\r
 133                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 134                 }\r
 135 \r
 136                 executor_.begin_invoke([=]{tick();});\r
 137         }\r
 138                         \r
 139         std::wstring print() const\r
 140         {\r
 141                 return L"video_channel[" + boost::lexical_cast<std::wstring>(index_) + L"|" +  video_format_desc().name + L"]";\r
 142         }\r
 143 \r
 144         boost::property_tree::wptree info() const\r
 145         {\r
 146                 boost::property_tree::wptree info;\r
 147 \r
 148                 auto stage_info  = stage_.info();\r
 149                 auto mixer_info  = mixer_.info();\r
 150                 auto output_info = output_.info();\r
 151 \r
 152                 info.add(L"video-mode", format_desc_.name);\r
 153                 info.add_child(L"stage", stage_info.get());\r
 154                 info.add_child(L"mixer", mixer_info.get());\r
 155                 info.add_child(L"output", output_info.get());\r
 156    \r
 157                 return info;                       \r
 158         }\r
 159 };\r
 160 \r
 161 video_channel::video_channel(int index, const core::video_format_desc& format_desc, std::unique_ptr<image_mixer> image_mixer) : impl_(new impl(index, format_desc, std::move(image_mixer))){}\r
 162 video_channel::~video_channel(){}\r
 163 const stage& video_channel::stage() const { return impl_->stage_;} \r
 164 stage& video_channel::stage() { return impl_->stage_;} \r
 165 const mixer& video_channel::mixer() const{ return impl_->mixer_;} \r
 166 mixer& video_channel::mixer() { return impl_->mixer_;} \r
 167 const output& video_channel::output() const { return impl_->output_;} \r
 168 output& video_channel::output() { return impl_->output_;} \r
 169 spl::shared_ptr<frame_factory> video_channel::frame_factory() { return impl_->image_mixer_;} \r
 170 core::video_format_desc video_channel::video_format_desc() const{return impl_->video_format_desc();}\r
 171 void core::video_channel::video_format_desc(const core::video_format_desc& format_desc){impl_->video_format_desc(format_desc);}\r
 172 boost::property_tree::wptree video_channel::info() const{return impl_->info();}         \r
 173 void video_channel::subscribe(const monitor::observable::observer_ptr& o) {impl_->event_subject_.subscribe(o);}\r
 174 void video_channel::unsubscribe(const monitor::observable::observer_ptr& o) {impl_->event_subject_.unsubscribe(o);}\r
 175 \r
 176 }}