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

   1 /*
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Robert Nagy, ronag89@gmail.com
  20 */
  21
  22 #include "StdAfx.h"
  23
  24 #include "video_channel.h"
  25
  26 #include "video_format.h"
  27
  28 #include "producer/stage.h"
  29 #include "mixer/mixer.h"
  30 #include "consumer/output.h"
  31 #include "frame/frame.h"
  32 #include "frame/draw_frame.h"
  33 #include "frame/frame_factory.h"
  34
  35 #include <common/diagnostics/graph.h>
  36 #include <common/env.h>
  37 #include <common/lock.h>
  38 #include <common/executor.h>
  39
  40 #include <core/mixer/image/image_mixer.h>
  41 #include <core/diagnostics/call_context.h>
  42
  43 #include <tbb/spin_mutex.h>
  44
  45 #include <boost/property_tree/ptree.hpp>
  46
  47 #include <string>
  48
  49 namespace caspar { namespace core {
  50
  51 struct video_channel::impl final
  52 {
  53         spl::shared_ptr<monitor::subject>                                       monitor_subject_;
  54
  55         const int                                                                                       index_;
  56
  57         mutable tbb::spin_mutex                                                         format_desc_mutex_;
  58         core::video_format_desc                                                         format_desc_;
  59
  60         const spl::shared_ptr<caspar::diagnostics::graph>       graph_                          = [](int index)
  61                                                                                                                                                           {
  62                                                                                                                                                                   core::diagnostics::scoped_call_context save;
  63                                                                                                                                                                   core::diagnostics::call_context::for_thread().video_channel = index;
  64                                                                                                                                                                   return spl::make_shared<caspar::diagnostics::graph>();
  65                                                                                                                                                           }(index_);
  66
  67         caspar::core::output                                                            output_;
  68         spl::shared_ptr<image_mixer>                                            image_mixer_;
  69         caspar::core::mixer                                                                     mixer_;
  70         caspar::core::stage                                                                     stage_;
  71
  72         executor                                                                                        executor_                       = L"video_channel";
  73 public:
  74         impl(int index, const core::video_format_desc& format_desc, std::unique_ptr<image_mixer> image_mixer)
  75                 : monitor_subject_(spl::make_shared<monitor::subject>(
  76                                 "/channel/" + boost::lexical_cast<std::string>(index)))
  77                 , index_(index)
  78                 , format_desc_(format_desc)
  79                 , output_(graph_, format_desc, index)
  80                 , image_mixer_(std::move(image_mixer))
  81                 , mixer_(graph_, image_mixer_)
  82                 , stage_(graph_)
  83         {
  84                 graph_->set_color("tick-time", caspar::diagnostics::color(0.0f, 0.6f, 0.9f));
  85                 graph_->set_text(print());
  86                 caspar::diagnostics::register_graph(graph_);
  87
  88                 output_.monitor_output().attach_parent(monitor_subject_);
  89                 stage_.monitor_output().attach_parent(monitor_subject_);
  90
  91                 executor_.begin_invoke([=]{tick();});
  92
  93                 CASPAR_LOG(info) << print() << " Successfully Initialized.";
  94         }
  95
  96         core::video_format_desc video_format_desc() const
  97         {
  98                 return lock(format_desc_mutex_, [&]
  99                 {
 100                         return format_desc_;
 101                 });
 102         }
 103
 104         void video_format_desc(const core::video_format_desc& format_desc)
 105         {
 106                 lock(format_desc_mutex_, [&]
 107                 {
 108                         format_desc_ = format_desc;
 109                         stage_.clear();
 110                 });
 111         }
 112
 113         void tick()
 114         {
 115                 try
 116                 {
 117
 118                         auto format_desc = video_format_desc();
 119
 120                         boost::timer frame_timer;
 121
 122                         // Produce
 123
 124                         auto stage_frames = stage_(format_desc);
 125
 126                         // Mix
 127
 128                         auto mixed_frame  = mixer_(std::move(stage_frames), format_desc);
 129
 130                         // Consume
 131
 132                         output_(std::move(mixed_frame), format_desc);
 133
 134                         auto frame_time = frame_timer.elapsed()*format_desc.fps*0.5;
 135                         graph_->set_value("tick-time", frame_time);
 136
 137                         *monitor_subject_       << monitor::message("/profiler/time")   % frame_timer.elapsed() % (1.0/format_desc_.fps)
 138                                                                 << monitor::message("/format")                  % format_desc.name;
 139                 }
 140                 catch(...)
 141                 {
 142                         CASPAR_LOG_CURRENT_EXCEPTION();
 143                 }
 144
 145                 executor_.begin_invoke([=]{tick();});
 146         }
 147
 148         std::wstring print() const
 149         {
 150                 return L"video_channel[" + boost::lexical_cast<std::wstring>(index_) + L"|" +  video_format_desc().name + L"]";
 151         }
 152
 153         int index() const
 154         {
 155                 return index_;
 156         }
 157
 158         boost::property_tree::wptree info() const
 159         {
 160                 boost::property_tree::wptree info;
 161
 162                 auto stage_info  = stage_.info();
 163                 auto mixer_info  = mixer_.info();
 164                 auto output_info = output_.info();
 165
 166                 info.add(L"video-mode", format_desc_.name);
 167                 info.add_child(L"stage", stage_info.get());
 168                 info.add_child(L"mixer", mixer_info.get());
 169                 info.add_child(L"output", output_info.get());
 170
 171                 return info;
 172         }
 173 };
 174
 175 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))){}
 176 video_channel::~video_channel(){}
 177 const stage& video_channel::stage() const { return impl_->stage_;}
 178 stage& video_channel::stage() { return impl_->stage_;}
 179 const mixer& video_channel::mixer() const{ return impl_->mixer_;}
 180 mixer& video_channel::mixer() { return impl_->mixer_;}
 181 const output& video_channel::output() const { return impl_->output_;}
 182 output& video_channel::output() { return impl_->output_;}
 183 spl::shared_ptr<frame_factory> video_channel::frame_factory() { return impl_->image_mixer_;}
 184 core::video_format_desc video_channel::video_format_desc() const{return impl_->video_format_desc();}
 185 void core::video_channel::video_format_desc(const core::video_format_desc& format_desc){impl_->video_format_desc(format_desc);}
 186 boost::property_tree::wptree video_channel::info() const{return impl_->info();}
 187 int video_channel::index() const { return impl_->index(); }
 188 monitor::subject& video_channel::monitor_output(){ return *impl_->monitor_subject_; }
 189
 190 }}