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/data_frame.h"\r
  32 #include "frame/frame_factory.h"\r
  33 \r
  34 #include <common/diagnostics/graph.h>\r
  35 #include <common/env.h>\r
  36 #include <common/concurrency/lock.h>\r
  37 #include <common/concurrency/executor.h>\r
  38 \r
  39 #include <core/mixer/image/image_mixer.h>\r
  40 \r
  41 #include <tbb/spin_mutex.h>\r
  42 \r
  43 #include <boost/property_tree/ptree.hpp>\r
  44 \r
  45 #include <string>\r
  46 \r
  47 namespace caspar { namespace core {\r
  48 \r
  49 struct video_channel::impl sealed : public frame_factory\r
  50 {\r
  51         reactive::basic_subject<spl::shared_ptr<const data_frame>> frame_subject_;\r
  52         monitor::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         caspar::core::mixer                                                             mixer_;\r
  63         caspar::core::stage                                                             stage_; \r
  64 \r
  65         executor                                                                                executor_;\r
  66 public:\r
  67         impl(int index, const core::video_format_desc& format_desc, spl::unique_ptr<image_mixer> image_mixer)  \r
  68                 : event_subject_(monitor::path() % "channel" % index)\r
  69                 , index_(index)\r
  70                 , format_desc_(format_desc)\r
  71                 , output_(graph_, format_desc, index)\r
  72                 , mixer_(graph_, std::move(image_mixer))\r
  73                 , stage_(graph_)\r
  74                 , executor_(L"video_channel")\r
  75         {\r
  76                 graph_->set_color("tick-time", diagnostics::color(0.0f, 0.6f, 0.9f));   \r
  77                 graph_->set_text(print());\r
  78                 diagnostics::register_graph(graph_);\r
  79 \r
  80                 stage_.subscribe(event_subject_);\r
  81 \r
  82                 executor_.begin_invoke([=]{tick();});\r
  83 \r
  84                 CASPAR_LOG(info) << print() << " Successfully Initialized.";\r
  85         }\r
  86         \r
  87         // frame_factory\r
  88                                                 \r
  89         virtual spl::shared_ptr<write_frame> create_frame(const void* tag, const core::pixel_format_desc& desc) override\r
  90         {               \r
  91                 return mixer_.create_frame(tag, desc);\r
  92         }\r
  93         \r
  94         virtual core::video_format_desc video_format_desc() const\r
  95         {\r
  96                 return lock(format_desc_mutex_, [&]\r
  97                 {\r
  98                         return format_desc_;\r
  99                 });\r
 100         }\r
 101         \r
 102         // video_channel\r
 103         \r
 104         void video_format_desc(const core::video_format_desc& format_desc)\r
 105         {\r
 106                 lock(format_desc_mutex_, [&]\r
 107                 {\r
 108                         format_desc_ = format_desc;\r
 109                 });\r
 110         }\r
 111 \r
 112         void tick()\r
 113         {\r
 114                 try\r
 115                 {\r
 116                         auto format_desc = video_format_desc();\r
 117 \r
 118                         boost::timer frame_timer;\r
 119 \r
 120                         // Produce\r
 121                         \r
 122                         auto stage_frames = stage_(format_desc);\r
 123 \r
 124                         // Mix\r
 125                         \r
 126                         auto mixed_frame  = mixer_(std::move(stage_frames), format_desc);\r
 127 \r
 128                         // Consume\r
 129                         \r
 130                         frame_subject_ << mixed_frame;\r
 131                         \r
 132                         output_(std::move(mixed_frame), format_desc);\r
 133                 \r
 134                         graph_->set_value("tick-time", frame_timer.elapsed()*format_desc.fps*0.5);\r
 135 \r
 136                         event_subject_  << monitor::event("profiler/time")      % frame_timer.elapsed() % (1.0/format_desc_.fps)\r
 137                                                         << monitor::event("format")                                     % u8(format_desc.name);\r
 138                 }\r
 139                 catch(...)\r
 140                 {\r
 141                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 142                 }\r
 143 \r
 144                 executor_.begin_invoke([=]{tick();});\r
 145         }\r
 146                         \r
 147         std::wstring print() const\r
 148         {\r
 149                 return L"video_channel[" + boost::lexical_cast<std::wstring>(index_) + L"|" +  video_format_desc().name + L"]";\r
 150         }\r
 151 \r
 152         boost::property_tree::wptree info() const\r
 153         {\r
 154                 boost::property_tree::wptree info;\r
 155 \r
 156                 auto stage_info  = stage_.info();\r
 157                 auto mixer_info  = mixer_.info();\r
 158                 auto output_info = output_.info();\r
 159 \r
 160                 info.add(L"video-mode", format_desc_.name);\r
 161                 info.add_child(L"stage", stage_info.get());\r
 162                 info.add_child(L"mixer", mixer_info.get());\r
 163                 info.add_child(L"output", output_info.get());\r
 164    \r
 165                 return info;                       \r
 166         }\r
 167 };\r
 168 \r
 169 video_channel::video_channel(int index, const core::video_format_desc& format_desc, spl::unique_ptr<image_mixer> image_mixer) : impl_(new impl(index, format_desc, std::move(image_mixer))){}\r
 170 const stage& video_channel::stage() const { return impl_->stage_;} \r
 171 stage& video_channel::stage() { return impl_->stage_;} \r
 172 const mixer& video_channel::mixer() const{ return impl_->mixer_;} \r
 173 mixer& video_channel::mixer() { return impl_->mixer_;} \r
 174 const output& video_channel::output() const { return impl_->output_;} \r
 175 output& video_channel::output() { return impl_->output_;} \r
 176 spl::shared_ptr<frame_factory> video_channel::frame_factory() { return impl_;} \r
 177 core::video_format_desc video_channel::video_format_desc() const{return impl_->video_format_desc();}\r
 178 void core::video_channel::video_format_desc(const core::video_format_desc& format_desc){impl_->video_format_desc(format_desc);}\r
 179 boost::property_tree::wptree video_channel::info() const{return impl_->info();}\r
 180 void video_channel::subscribe(const frame_observable::observer_ptr& o) {impl_->frame_subject_.subscribe(o);}\r
 181 void video_channel::unsubscribe(const frame_observable::observer_ptr& o) {impl_->frame_subject_.unsubscribe(o);}                \r
 182 void video_channel::subscribe(const monitor::observable::observer_ptr& o) {impl_->event_subject_.subscribe(o);}\r
 183 void video_channel::unsubscribe(const monitor::observable::observer_ptr& o) {impl_->event_subject_.unsubscribe(o);}\r
 184 \r
 185 }}