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

   1 /*\r
   2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 *  This file is part of CasparCG.\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 */\r
  20 \r
  21 #include "StdAfx.h"\r
  22 \r
  23 #include "video_channel.h"\r
  24 \r
  25 #include "video_channel_context.h"\r
  26 #include "video_format.h"\r
  27 \r
  28 #include "consumer/output.h"\r
  29 #include "mixer/mixer.h"\r
  30 #include "producer/stage.h"\r
  31 \r
  32 #include <common/concurrency/executor.h>\r
  33 #include <common/diagnostics/graph.h>\r
  34 \r
  35 #include "mixer/gpu/ogl_device.h"\r
  36 \r
  37 #include <boost/timer.hpp>\r
  38 \r
  39 #ifdef _MSC_VER\r
  40 #pragma warning(disable : 4355)\r
  41 #endif\r
  42 \r
  43 namespace caspar { namespace core {\r
  44 \r
  45 struct video_channel::implementation : boost::noncopyable\r
  46 {\r
  47         video_channel_context                   context_;\r
  48 \r
  49         safe_ptr<caspar::core::output>                  output_;\r
  50         std::shared_ptr<caspar::core::mixer>    mixer_;\r
  51         safe_ptr<caspar::core::stage>                   stage_;\r
  52 \r
  53         safe_ptr<diagnostics::graph>    diag_;\r
  54         boost::timer                                    frame_timer_;\r
  55         boost::timer                                    tick_timer_;\r
  56         boost::timer                                    output_timer_;\r
  57         \r
  58 public:\r
  59         implementation(int index, const video_format_desc& format_desc, ogl_device& ogl)  \r
  60                 : context_(index, ogl, format_desc)\r
  61                 , output_(new caspar::core::output(context_, [this]{restart();}))\r
  62                 , mixer_(new caspar::core::mixer(context_))\r
  63                 , stage_(new caspar::core::stage(context_))     \r
  64         {\r
  65                 diag_->add_guide("produce-time", 0.5f); \r
  66                 diag_->set_color("produce-time", diagnostics::color(0.0f, 1.0f, 0.0f));\r
  67                 diag_->set_color("tick-time", diagnostics::color(0.0f, 0.6f, 0.9f));    \r
  68                 diag_->set_color("output-time", diagnostics::color(1.0f, 0.5f, 0.0f));\r
  69                 diag_->set_color("mix-time", diagnostics::color(1.0f, 1.0f, 0.9f));\r
  70                 diag_->set_text(print());\r
  71                 diagnostics::register_graph(diag_);\r
  72 \r
  73                 CASPAR_LOG(info) << print() << " Successfully Initialized.";\r
  74                 context_.execution().begin_invoke([this]{tick();});\r
  75         }\r
  76 \r
  77         ~implementation()\r
  78         {\r
  79                 // Stop context before destroying devices.\r
  80                 context_.execution().stop();\r
  81                 context_.execution().join();\r
  82                 context_.destruction().stop();\r
  83                 context_.destruction().join();\r
  84         }\r
  85 \r
  86         void tick()\r
  87         {\r
  88                 try\r
  89                 {\r
  90                         // Produce\r
  91 \r
  92                         frame_timer_.restart();\r
  93 \r
  94                         auto simple_frames = stage_->execute();\r
  95 \r
  96                         diag_->update_value("produce-time", frame_timer_.elapsed()*context_.get_format_desc().fps*0.5);\r
  97                 \r
  98                         // Mix\r
  99 \r
 100                         frame_timer_.restart();\r
 101 \r
 102                         auto finished_frame = mixer_->execute(simple_frames);\r
 103                 \r
 104                         diag_->update_value("mix-time", frame_timer_.elapsed()*context_.get_format_desc().fps*0.5);\r
 105                 \r
 106                         // Consume\r
 107                 \r
 108                         output_timer_.restart();\r
 109 \r
 110                         output_->execute(finished_frame);\r
 111                 \r
 112                         diag_->update_value("output-time", frame_timer_.elapsed()*context_.get_format_desc().fps*0.5);\r
 113 \r
 114                 \r
 115                         diag_->update_value("tick-time", tick_timer_.elapsed()*context_.get_format_desc().fps*0.5);\r
 116                         tick_timer_.restart();\r
 117                 }\r
 118                 catch(...)\r
 119                 {\r
 120                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 121                         CASPAR_LOG(error) << context_.print() << L" Unexpected exception. Clearing stage and freeing memory";\r
 122                         restart();\r
 123                 }\r
 124 \r
 125                 context_.execution().begin_invoke([this]{tick();});\r
 126         }\r
 127 \r
 128         void restart()\r
 129         {\r
 130                 stage_->clear();\r
 131                 context_.ogl().gc().wait();\r
 132 \r
 133                 mixer_ = nullptr;\r
 134                 mixer_.reset(new caspar::core::mixer(context_));\r
 135         }\r
 136                 \r
 137         std::wstring print() const\r
 138         {\r
 139                 return context_.print();\r
 140         }\r
 141 \r
 142         void set_video_format_desc(const video_format_desc& format_desc)\r
 143         {\r
 144                 context_.execution().begin_invoke([=]\r
 145                 {\r
 146                         stage_->clear();\r
 147                         context_.ogl().gc().wait();\r
 148                         context_.set_format_desc(format_desc);\r
 149                 });\r
 150         }\r
 151 };\r
 152 \r
 153 video_channel::video_channel(int index, const video_format_desc& format_desc, ogl_device& ogl) : impl_(new implementation(index, format_desc, ogl)){}\r
 154 video_channel::video_channel(video_channel&& other) : impl_(std::move(other.impl_)){}\r
 155 safe_ptr<stage> video_channel::stage() { return impl_->stage_;} \r
 156 safe_ptr<mixer> video_channel::mixer() { return make_safe_ptr(impl_->mixer_);} \r
 157 safe_ptr<output> video_channel::output() { return impl_->output_;} \r
 158 video_format_desc video_channel::get_video_format_desc() const{return impl_->context_.get_format_desc();}\r
 159 void video_channel::set_video_format_desc(const video_format_desc& format_desc){impl_->set_video_format_desc(format_desc);}\r
 160 std::wstring video_channel::print() const { return impl_->print();}\r
 161 video_channel_context& video_channel::context(){return impl_->context_;}\r
 162 \r
 163 }}