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 <tbb/spin_mutex.h>\r
  40 \r
  41 #include <boost/property_tree/ptree.hpp>\r
  42 \r
  43 #include <string>\r
  44 \r
  45 namespace caspar { namespace core {\r
  46 \r
  47 struct video_channel::impl sealed : public frame_factory\r
  48 {\r
  49         reactive::basic_subject<spl::shared_ptr<const data_frame>> frame_subject_;\r
  50 \r
  51         const int                                                                               index_;\r
  52 \r
  53         mutable tbb::spin_mutex                                                 format_desc_mutex_;\r
  54         video_format_desc                                                               format_desc_;\r
  55         \r
  56         const spl::shared_ptr<diagnostics::graph>               graph_;\r
  57 \r
  58         const spl::shared_ptr<caspar::core::output>             output_;\r
  59         const spl::shared_ptr<caspar::core::mixer>              mixer_;\r
  60         const spl::shared_ptr<caspar::core::stage>              stage_; \r
  61 \r
  62         boost::timer                                                                    tick_timer_;\r
  63         boost::timer                                                                    produce_timer_;\r
  64         boost::timer                                                                    mix_timer_;\r
  65         boost::timer                                                                    consume_timer_;\r
  66 \r
  67         executor                                                                                executor_;\r
  68 public:\r
  69         impl(int index, const video_format_desc& format_desc, spl::shared_ptr<image_mixer> image_mixer)  \r
  70                 :  index_(index)\r
  71                 , format_desc_(format_desc)\r
  72                 , output_(new caspar::core::output(format_desc, index))\r
  73                 , mixer_(new caspar::core::mixer(std::move(image_mixer)))\r
  74                 , stage_(new caspar::core::stage())     \r
  75                 , executor_(L"video_channel")\r
  76         {\r
  77                 //graph_->set_color("mix-time", diagnostics::color(1.0f, 0.0f, 0.9f, 0.8));\r
  78                 graph_->set_color("produce-time", diagnostics::color(0.0f, 1.0f, 0.0f));\r
  79                 graph_->set_color("tick-time", diagnostics::color(0.0f, 0.6f, 0.9f));   \r
  80                 graph_->set_color("consume-time", diagnostics::color(1.0f, 0.4f, 0.0f, 0.8));\r
  81                 graph_->set_text(print());\r
  82                 diagnostics::register_graph(graph_);\r
  83 \r
  84                 executor_.begin_invoke([=]{tick();});\r
  85 \r
  86                 CASPAR_LOG(info) << print() << " Successfully Initialized.";\r
  87         }\r
  88         \r
  89         // frame_factory\r
  90                                                 \r
  91         virtual spl::shared_ptr<write_frame> create_frame(const void* tag, const core::pixel_format_desc& desc) override\r
  92         {               \r
  93                 return mixer_->create_frame(tag, desc);\r
  94         }\r
  95         \r
  96         virtual core::video_format_desc get_video_format_desc() const override\r
  97         {\r
  98                 return lock(format_desc_mutex_, [&]\r
  99                 {\r
 100                         return format_desc_;\r
 101                 });\r
 102         }\r
 103         \r
 104         // video_channel\r
 105 \r
 106         void tick()\r
 107         {\r
 108                 tick_timer_.restart();\r
 109 \r
 110                 // Produce\r
 111 \r
 112                 produce_timer_.restart();\r
 113 \r
 114                 auto stage_frames = (*stage_)(format_desc_);\r
 115                 \r
 116                 graph_->set_value("produce-time", produce_timer_.elapsed()*format_desc_.fps*0.5);\r
 117 \r
 118                 // Mix\r
 119 \r
 120                 //mix_timer_.restart();\r
 121 \r
 122                 auto mixed_frame  = (*mixer_)(std::move(stage_frames), format_desc_);\r
 123                 \r
 124                 //graph_->set_value("mix-time", mix_timer_.elapsed()*format_desc_.fps*0.5);\r
 125 \r
 126                 // Consume\r
 127 \r
 128                 consume_timer_.restart();\r
 129 \r
 130                 frame_subject_.on_next(mixed_frame);\r
 131 \r
 132                 graph_->set_value("consume-time", consume_timer_.elapsed()*format_desc_.fps*0.5);\r
 133 \r
 134                 (*output_)(std::move(mixed_frame), format_desc_);\r
 135                 \r
 136                 graph_->set_value("tick-time", tick_timer_.elapsed()*format_desc_.fps*0.5);\r
 137 \r
 138                 executor_.begin_invoke([=]{tick();});\r
 139         }\r
 140 \r
 141         void set_video_format_desc(const video_format_desc& format_desc)\r
 142         {\r
 143                 lock(format_desc_mutex_, [&]\r
 144                 {\r
 145                         format_desc_ = format_desc;\r
 146                 });\r
 147         }\r
 148                 \r
 149         std::wstring print() const\r
 150         {\r
 151                 return L"video_channel[" + boost::lexical_cast<std::wstring>(index_) + L"|" +  format_desc_.name + L"]";\r
 152         }\r
 153 \r
 154         boost::property_tree::wptree info() const\r
 155         {\r
 156                 boost::property_tree::wptree info;\r
 157 \r
 158                 auto stage_info  = stage_->info();\r
 159                 auto mixer_info  = mixer_->info();\r
 160                 auto output_info = output_->info();\r
 161 \r
 162                 info.add(L"video-mode", format_desc_.name);\r
 163                 info.add_child(L"stage", stage_info.get());\r
 164                 info.add_child(L"mixer", mixer_info.get());\r
 165                 info.add_child(L"output", output_info.get());\r
 166    \r
 167                 return info;                       \r
 168         }\r
 169 };\r
 170 \r
 171 video_channel::video_channel(int index, const video_format_desc& format_desc, spl::shared_ptr<image_mixer> image_mixer) : impl_(new impl(index, format_desc, image_mixer)){}\r
 172 spl::shared_ptr<stage> video_channel::stage() { return impl_->stage_;} \r
 173 spl::shared_ptr<mixer> video_channel::mixer() { return impl_->mixer_;} \r
 174 spl::shared_ptr<frame_factory> video_channel::frame_factory() { return impl_;} \r
 175 spl::shared_ptr<output> video_channel::output() { return impl_->output_;} \r
 176 video_format_desc video_channel::get_video_format_desc() const{return impl_->format_desc_;}\r
 177 void video_channel::set_video_format_desc(const video_format_desc& format_desc){impl_->set_video_format_desc(format_desc);}\r
 178 boost::property_tree::wptree video_channel::info() const{return impl_->info();}\r
 179 void video_channel::subscribe(const observer_ptr& o) {impl_->frame_subject_.subscribe(o);}\r
 180 void video_channel::unsubscribe(const observer_ptr& o) {impl_->frame_subject_.unsubscribe(o);}\r
 181 \r
 182 }}