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 #include <boost/lexical_cast.hpp>
  48
  49 #include <string>
  50
  51 namespace caspar { namespace core {
  52
  53 struct video_channel::impl final
  54 {
  55         spl::shared_ptr<monitor::subject>                                       monitor_subject_;
  56
  57         const int                                                                                       index_;
  58
  59         mutable tbb::spin_mutex                                                         format_desc_mutex_;
  60         core::video_format_desc                                                         format_desc_;
  61
  62         const spl::shared_ptr<caspar::diagnostics::graph>       graph_                          = [](int index)
  63                                                                                                                                                           {
  64                                                                                                                                                                   core::diagnostics::scoped_call_context save;
  65                                                                                                                                                                   core::diagnostics::call_context::for_thread().video_channel = index;
  66                                                                                                                                                                   return spl::make_shared<caspar::diagnostics::graph>();
  67                                                                                                                                                           }(index_);
  68
  69         caspar::core::output                                                            output_;
  70         spl::shared_ptr<image_mixer>                                            image_mixer_;
  71         caspar::core::mixer                                                                     mixer_;
  72         caspar::core::stage                                                                     stage_;
  73
  74         executor                                                                                        executor_                       { L"video_channel " + boost::lexical_cast<std::wstring>(index_) };
  75 public:
  76         impl(int index, const core::video_format_desc& format_desc, std::unique_ptr<image_mixer> image_mixer)
  77                 : monitor_subject_(spl::make_shared<monitor::subject>(
  78                                 "/channel/" + boost::lexical_cast<std::string>(index)))
  79                 , index_(index)
  80                 , format_desc_(format_desc)
  81                 , output_(graph_, format_desc, index)
  82                 , image_mixer_(std::move(image_mixer))
  83                 , mixer_(index, graph_, image_mixer_)
  84                 , stage_(index, graph_)
  85         {
  86                 graph_->set_color("tick-time", caspar::diagnostics::color(0.0f, 0.6f, 0.9f));
  87                 graph_->set_text(print());
  88                 caspar::diagnostics::register_graph(graph_);
  89
  90                 output_.monitor_output().attach_parent(monitor_subject_);
  91                 mixer_.monitor_output().attach_parent(monitor_subject_);
  92                 stage_.monitor_output().attach_parent(monitor_subject_);
  93
  94                 executor_.begin_invoke([=]{tick();});
  95
  96                 CASPAR_LOG(info) << print() << " Successfully Initialized.";
  97         }
  98
  99         ~impl()
 100         {
 101                 CASPAR_LOG(info) << print() << " Uninitializing.";
 102         }
 103
 104         core::video_format_desc video_format_desc() const
 105         {
 106                 return lock(format_desc_mutex_, [&]
 107                 {
 108                         return format_desc_;
 109                 });
 110         }
 111
 112         void video_format_desc(const core::video_format_desc& format_desc)
 113         {
 114                 lock(format_desc_mutex_, [&]
 115                 {
 116                         format_desc_ = format_desc;
 117                         stage_.clear();
 118                 });
 119         }
 120
 121         void tick()
 122         {
 123                 try
 124                 {
 125
 126                         auto format_desc = video_format_desc();
 127
 128                         caspar::timer frame_timer;
 129
 130                         // Produce
 131
 132                         auto stage_frames = stage_(format_desc);
 133
 134                         // Mix
 135
 136                         auto mixed_frame  = mixer_(std::move(stage_frames), format_desc);
 137
 138                         // Consume
 139
 140                         output_(std::move(mixed_frame), format_desc);
 141
 142                         auto frame_time = frame_timer.elapsed()*format_desc.fps*0.5;
 143                         graph_->set_value("tick-time", frame_time);
 144
 145                         *monitor_subject_       << monitor::message("/profiler/time")   % frame_timer.elapsed() % (1.0/format_desc_.fps)
 146                                                                 << monitor::message("/format")                  % format_desc.name;
 147                 }
 148                 catch(...)
 149                 {
 150                         CASPAR_LOG_CURRENT_EXCEPTION();
 151                 }
 152
 153                 if (executor_.is_running())
 154                         executor_.begin_invoke([=]{tick();});
 155         }
 156
 157         std::wstring print() const
 158         {
 159                 return L"video_channel[" + boost::lexical_cast<std::wstring>(index_) + L"|" +  video_format_desc().name + L"]";
 160         }
 161
 162         int index() const
 163         {
 164                 return index_;
 165         }
 166
 167         boost::property_tree::wptree info() const
 168         {
 169                 boost::property_tree::wptree info;
 170
 171                 auto stage_info  = stage_.info();
 172                 auto mixer_info  = mixer_.info();
 173                 auto output_info = output_.info();
 174
 175                 info.add(L"video-mode", format_desc_.name);
 176                 info.add_child(L"stage", stage_info.get());
 177                 info.add_child(L"mixer", mixer_info.get());
 178                 info.add_child(L"output", output_info.get());
 179
 180                 return info;
 181         }
 182
 183         boost::property_tree::wptree delay_info() const
 184         {
 185                 boost::property_tree::wptree info;
 186
 187                 auto stage_info = stage_.delay_info();
 188                 auto mixer_info = mixer_.delay_info();
 189                 auto output_info = output_.delay_info();
 190
 191                 // TODO: because of std::async deferred timed waiting does not work so for now we have to block
 192                 info.add_child(L"layers", stage_info.get());
 193                 info.add_child(L"mix-time", mixer_info.get());
 194                 info.add_child(L"output", output_info.get());
 195
 196                 return info;
 197         }
 198 };
 199
 200 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))){}
 201 video_channel::~video_channel(){}
 202 const stage& video_channel::stage() const { return impl_->stage_;}
 203 stage& video_channel::stage() { return impl_->stage_;}
 204 const mixer& video_channel::mixer() const{ return impl_->mixer_;}
 205 mixer& video_channel::mixer() { return impl_->mixer_;}
 206 const output& video_channel::output() const { return impl_->output_;}
 207 output& video_channel::output() { return impl_->output_;}
 208 spl::shared_ptr<frame_factory> video_channel::frame_factory() { return impl_->image_mixer_;}
 209 core::video_format_desc video_channel::video_format_desc() const{return impl_->video_format_desc();}
 210 void core::video_channel::video_format_desc(const core::video_format_desc& format_desc){impl_->video_format_desc(format_desc);}
 211 boost::property_tree::wptree video_channel::info() const{return impl_->info();}
 212 boost::property_tree::wptree video_channel::delay_info() const { return impl_->delay_info(); }
 213 int video_channel::index() const { return impl_->index(); }
 214 monitor::subject& video_channel::monitor_output(){ return *impl_->monitor_subject_; }
 215
 216 }}