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