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 #include <common/timer.h>
  40
  41 #include <core/mixer/image/image_mixer.h>
  42 #include <core/diagnostics/call_context.h>
  43
  44 #include <tbb/spin_mutex.h>
  45
  46 #include <boost/property_tree/ptree.hpp>
  47
  48 #include <string>
  49
  50 namespace caspar { namespace core {
  51
  52 struct video_channel::impl final
  53 {
  54         spl::shared_ptr<monitor::subject>                                       monitor_subject_;
  55
  56         const int                                                                                       index_;
  57
  58         mutable tbb::spin_mutex                                                         format_desc_mutex_;
  59         core::video_format_desc                                                         format_desc_;
  60
  61         const spl::shared_ptr<caspar::diagnostics::graph>       graph_                          = [](int index)
  62                                                                                                                                                           {
  63                                                                                                                                                                   core::diagnostics::scoped_call_context save;
  64                                                                                                                                                                   core::diagnostics::call_context::for_thread().video_channel = index;
  65                                                                                                                                                                   return spl::make_shared<caspar::diagnostics::graph>();
  66                                                                                                                                                           }(index_);
  67
  68         caspar::core::output                                                            output_;
  69         spl::shared_ptr<image_mixer>                                            image_mixer_;
  70         caspar::core::mixer                                                                     mixer_;
  71         caspar::core::stage                                                                     stage_;
  72
  73         executor                                                                                        executor_                       { L"video_channel" };
  74 public:
  75         impl(int index, const core::video_format_desc& format_desc, std::unique_ptr<image_mixer> image_mixer)
  76                 : monitor_subject_(spl::make_shared<monitor::subject>(
  77                                 "/channel/" + boost::lexical_cast<std::string>(index)))
  78                 , index_(index)
  79                 , format_desc_(format_desc)
  80                 , output_(graph_, format_desc, index)
  81                 , image_mixer_(std::move(image_mixer))
  82                 , mixer_(graph_, image_mixer_)
  83                 , stage_(graph_)
  84         {
  85                 graph_->set_color("tick-time", caspar::diagnostics::color(0.0f, 0.6f, 0.9f));
  86                 graph_->set_text(print());
  87                 caspar::diagnostics::register_graph(graph_);
  88
  89                 output_.monitor_output().attach_parent(monitor_subject_);
  90                 stage_.monitor_output().attach_parent(monitor_subject_);
  91
  92                 executor_.begin_invoke([=]{tick();});
  93
  94                 CASPAR_LOG(info) << print() << " Successfully Initialized.";
  95         }
  96
  97         core::video_format_desc video_format_desc() const
  98         {
  99                 return lock(format_desc_mutex_, [&]
 100                 {
 101                         return format_desc_;
 102                 });
 103         }
 104
 105         void video_format_desc(const core::video_format_desc& format_desc)
 106         {
 107                 lock(format_desc_mutex_, [&]
 108                 {
 109                         format_desc_ = format_desc;
 110                         stage_.clear();
 111                 });
 112         }
 113
 114         void tick()
 115         {
 116                 try
 117                 {
 118
 119                         auto format_desc = video_format_desc();
 120
 121                         caspar::timer frame_timer;
 122
 123                         // Produce
 124
 125                         auto stage_frames = stage_(format_desc);
 126
 127                         // Mix
 128
 129                         auto mixed_frame  = mixer_(std::move(stage_frames), format_desc);
 130
 131                         // Consume
 132
 133                         output_(std::move(mixed_frame), format_desc);
 134
 135                         auto frame_time = frame_timer.elapsed()*format_desc.fps*0.5;
 136                         graph_->set_value("tick-time", frame_time);
 137
 138                         *monitor_subject_       << monitor::message("/profiler/time")   % frame_timer.elapsed() % (1.0/format_desc_.fps)
 139                                                                 << monitor::message("/format")                  % format_desc.name;
 140                 }
 141                 catch(...)
 142                 {
 143                         CASPAR_LOG_CURRENT_EXCEPTION();
 144                 }
 145
 146                 executor_.begin_invoke([=]{tick();});
 147         }
 148
 149         std::wstring print() const
 150         {
 151                 return L"video_channel[" + boost::lexical_cast<std::wstring>(index_) + L"|" +  video_format_desc().name + L"]";
 152         }
 153
 154         int index() const
 155         {
 156                 return index_;
 157         }
 158
 159         boost::property_tree::wptree info() const
 160         {
 161                 boost::property_tree::wptree info;
 162
 163                 auto stage_info  = stage_.info();
 164                 auto mixer_info  = mixer_.info();
 165                 auto output_info = output_.info();
 166
 167                 info.add(L"video-mode", format_desc_.name);
 168                 info.add_child(L"stage", stage_info.get());
 169                 info.add_child(L"mixer", mixer_info.get());
 170                 info.add_child(L"output", output_info.get());
 171
 172                 return info;
 173         }
 174 };
 175
 176 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))){}
 177 video_channel::~video_channel(){}
 178 const stage& video_channel::stage() const { return impl_->stage_;}
 179 stage& video_channel::stage() { return impl_->stage_;}
 180 const mixer& video_channel::mixer() const{ return impl_->mixer_;}
 181 mixer& video_channel::mixer() { return impl_->mixer_;}
 182 const output& video_channel::output() const { return impl_->output_;}
 183 output& video_channel::output() { return impl_->output_;}
 184 spl::shared_ptr<frame_factory> video_channel::frame_factory() { return impl_->image_mixer_;}
 185 core::video_format_desc video_channel::video_format_desc() const{return impl_->video_format_desc();}
 186 void core::video_channel::video_format_desc(const core::video_format_desc& format_desc){impl_->video_format_desc(format_desc);}
 187 boost::property_tree::wptree video_channel::info() const{return impl_->info();}
 188 int video_channel::index() const { return impl_->index(); }
 189 monitor::subject& video_channel::monitor_output(){ return *impl_->monitor_subject_; }
 190
 191 }}