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_                       = L"video_channel";
  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         {
  78                 graph_->set_color("tick-time", diagnostics::color(0.0f, 0.6f, 0.9f));
  79                 graph_->set_text(print());
  80                 diagnostics::register_graph(graph_);
  81
  82                 output_.monitor_output().attach_parent(monitor_subject_);
  83                 stage_.monitor_output().attach_parent(monitor_subject_);
  84
  85                 executor_.begin_invoke([=]{tick();});
  86
  87                 CASPAR_LOG(info) << print() << " Successfully Initialized.";
  88         }
  89
  90         core::video_format_desc video_format_desc() const
  91         {
  92                 return lock(format_desc_mutex_, [&]
  93                 {
  94                         return format_desc_;
  95                 });
  96         }
  97
  98         void video_format_desc(const core::video_format_desc& format_desc)
  99         {
 100                 lock(format_desc_mutex_, [&]
 101                 {
 102                         format_desc_ = format_desc;
 103                         stage_.clear();
 104                 });
 105         }
 106
 107         void tick()
 108         {
 109                 try
 110                 {
 111
 112                         auto format_desc = video_format_desc();
 113
 114                         boost::timer frame_timer;
 115
 116                         // Produce
 117
 118                         auto stage_frames = stage_(format_desc);
 119
 120                         // Mix
 121
 122                         auto mixed_frame  = mixer_(std::move(stage_frames), format_desc);
 123
 124                         // Consume
 125
 126                         output_(std::move(mixed_frame), format_desc);
 127
 128                         graph_->set_value("tick-time", frame_timer.elapsed()*format_desc.fps*0.5);
 129
 130                         *monitor_subject_       << monitor::message("/profiler/time")   % frame_timer.elapsed() % (1.0/format_desc_.fps)
 131                                                                 << monitor::message("/format")                  % format_desc.name;
 132                 }
 133                 catch(...)
 134                 {
 135                         CASPAR_LOG_CURRENT_EXCEPTION();
 136                 }
 137
 138                 executor_.begin_invoke([=]{tick();});
 139         }
 140
 141         std::wstring print() const
 142         {
 143                 return L"video_channel[" + boost::lexical_cast<std::wstring>(index_) + L"|" +  video_format_desc().name + L"]";
 144         }
 145
 146         boost::property_tree::wptree info() const
 147         {
 148                 boost::property_tree::wptree info;
 149
 150                 auto stage_info  = stage_.info();
 151                 auto mixer_info  = mixer_.info();
 152                 auto output_info = output_.info();
 153
 154                 info.add(L"video-mode", format_desc_.name);
 155                 info.add_child(L"stage", stage_info.get());
 156                 info.add_child(L"mixer", mixer_info.get());
 157                 info.add_child(L"output", output_info.get());
 158
 159                 return info;
 160         }
 161 };
 162
 163 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))){}
 164 video_channel::~video_channel(){}
 165 const stage& video_channel::stage() const { return impl_->stage_;}
 166 stage& video_channel::stage() { return impl_->stage_;}
 167 const mixer& video_channel::mixer() const{ return impl_->mixer_;}
 168 mixer& video_channel::mixer() { return impl_->mixer_;}
 169 const output& video_channel::output() const { return impl_->output_;}
 170 output& video_channel::output() { return impl_->output_;}
 171 spl::shared_ptr<frame_factory> video_channel::frame_factory() { return impl_->image_mixer_;}
 172 core::video_format_desc video_channel::video_format_desc() const{return impl_->video_format_desc();}
 173 void core::video_channel::video_format_desc(const core::video_format_desc& format_desc){impl_->video_format_desc(format_desc);}
 174 boost::property_tree::wptree video_channel::info() const{return impl_->info();}
 175 monitor::subject& video_channel::monitor_output(){return *impl_->monitor_subject_;}
 176
 177 }}