git.sesse.net Git - casparcg/blob - core/producer/layer.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 "layer.h"
  25
  26 #include "frame_producer.h"
  27
  28 #include "../video_format.h"
  29 #include "../frame/draw_frame.h"
  30 #include "../frame/frame_transform.h"
  31
  32 #include <boost/optional.hpp>
  33 #include <boost/thread/future.hpp>
  34
  35 namespace caspar { namespace core {
  36
  37 struct layer::impl
  38 {
  39         spl::shared_ptr<monitor::subject>       monitor_subject_;
  40         spl::shared_ptr<frame_producer>         foreground_                     = frame_producer::empty();
  41         spl::shared_ptr<frame_producer>         background_                     = frame_producer::empty();;
  42         boost::optional<int32_t>                        auto_play_delta_;
  43         bool                                                            is_paused_                      = false;
  44         int64_t                                                         current_frame_age_      = 0;
  45
  46 public:
  47         impl(int index)
  48                 : monitor_subject_(spl::make_shared<monitor::subject>(
  49                                 "/layer/" + boost::lexical_cast<std::string>(index)))
  50 //              , foreground_event_subject_("")
  51 //              , background_event_subject_("background")
  52         {
  53 //              foreground_event_subject_.subscribe(event_subject_);
  54 //              background_event_subject_.subscribe(event_subject_);
  55         }
  56
  57         void set_foreground(spl::shared_ptr<frame_producer> producer)
  58         {
  59                 foreground_->monitor_output().detach_parent();
  60                 foreground_ = std::move(producer);
  61                 foreground_->monitor_output().attach_parent(monitor_subject_);
  62         }
  63
  64         void pause()
  65         {
  66                 foreground_->paused(true);
  67                 is_paused_ = true;
  68         }
  69
  70         void resume()
  71         {
  72                 foreground_->paused(false);
  73                 is_paused_ = false;
  74         }
  75
  76         void load(spl::shared_ptr<frame_producer> producer, bool preview, const boost::optional<int32_t>& auto_play_delta)
  77         {
  78 //              background_->unsubscribe(background_event_subject_);
  79                 background_ = std::move(producer);
  80 //              background_->subscribe(background_event_subject_);
  81
  82                 auto_play_delta_ = auto_play_delta;
  83
  84                 if(preview)
  85                 {
  86                         play();
  87                         foreground_->paused(true);
  88                         is_paused_ = true;
  89                 }
  90
  91                 if(auto_play_delta_ && foreground_ == frame_producer::empty())
  92                         play();
  93         }
  94
  95         void play()
  96         {
  97                 if(background_ != frame_producer::empty())
  98                 {
  99                         background_->leading_producer(foreground_);
 100
 101                         set_foreground(background_);
 102                         background_ = std::move(frame_producer::empty());
 103
 104                         auto_play_delta_.reset();
 105                 }
 106
 107                 foreground_->paused(false);
 108                 is_paused_ = false;
 109         }
 110
 111         void stop()
 112         {
 113                 set_foreground(frame_producer::empty());
 114
 115                 auto_play_delta_.reset();
 116         }
 117
 118         draw_frame receive(const video_format_desc& format_desc)
 119         {
 120                 try
 121                 {
 122                         *monitor_subject_ << monitor::message("/paused") % is_paused_;
 123
 124                         auto frame = foreground_->receive();
 125
 126                         if(frame == core::draw_frame::late())
 127                                 return foreground_->last_frame();
 128
 129                         if(auto_play_delta_)
 130                         {
 131                                 auto frames_left = static_cast<int64_t>(foreground_->nb_frames()) - foreground_->frame_number() - static_cast<int64_t>(*auto_play_delta_);
 132                                 if(frames_left < 1)
 133                                 {
 134                                         play();
 135                                         return receive(format_desc);
 136                                 }
 137                         }
 138
 139                         //event_subject_        << monitor::event("time")       % monitor::duration(foreground_->frame_number()/format_desc.fps)
 140                         //                                                                                      % monitor::duration(static_cast<int64_t>(foreground_->nb_frames()) - static_cast<int64_t>(auto_play_delta_ ? *auto_play_delta_ : 0)/format_desc.fps)
 141                         //                              << monitor::event("frame")      % static_cast<int64_t>(foreground_->frame_number())
 142                         //                                                                                      % static_cast<int64_t>((static_cast<int64_t>(foreground_->nb_frames()) - static_cast<int64_t>(auto_play_delta_ ? *auto_play_delta_ : 0)));
 143
 144                         //foreground_event_subject_ << monitor::event("type") % foreground_->name();
 145                         //background_event_subject_ << monitor::event("type") % background_->name();
 146
 147                         current_frame_age_ = frame.get_and_record_age_millis();
 148
 149                         return frame;
 150                 }
 151                 catch(...)
 152                 {
 153                         CASPAR_LOG_CURRENT_EXCEPTION();
 154                         stop();
 155                         return core::draw_frame::empty();
 156                 }
 157         }
 158
 159         boost::property_tree::wptree info() const
 160         {
 161                 boost::property_tree::wptree info;
 162                 info.add(L"auto_delta", (auto_play_delta_ ? boost::lexical_cast<std::wstring>(*auto_play_delta_) : L"null"));
 163                 info.add(L"frame-number", foreground_->frame_number());
 164
 165                 auto nb_frames = foreground_->nb_frames();
 166
 167                 info.add(L"nb_frames",   nb_frames == std::numeric_limits<int64_t>::max() ? -1 : nb_frames);
 168                 info.add(L"frames-left", nb_frames == std::numeric_limits<int64_t>::max() ? -1 : (foreground_->nb_frames() - foreground_->frame_number() - (auto_play_delta_ ? *auto_play_delta_ : 0)));
 169                 info.add(L"frame-age", current_frame_age_);
 170                 info.add_child(L"producer", foreground_->info());
 171                 info.add_child(L"background.producer", background_->info());
 172                 return info;
 173         }
 174
 175         boost::property_tree::wptree delay_info() const
 176         {
 177                 boost::property_tree::wptree info;
 178                 info.add(L"producer", foreground_->print());
 179                 info.add(L"frame-age", current_frame_age_);
 180                 return info;
 181         }
 182
 183         void on_interaction(const interaction_event::ptr& event)
 184         {
 185                 foreground_->on_interaction(event);
 186         }
 187
 188         bool collides(double x, double y) const
 189         {
 190                 return foreground_->collides(x, y);
 191         }
 192 };
 193
 194 layer::layer(int index) : impl_(new impl(index)){}
 195 layer::layer(layer&& other) : impl_(std::move(other.impl_)){}
 196 layer& layer::operator=(layer&& other)
 197 {
 198         other.swap(*this);
 199         return *this;
 200 }
 201 void layer::swap(layer& other)
 202 {
 203         impl_.swap(other.impl_);
 204 }
 205 void layer::load(spl::shared_ptr<frame_producer> frame_producer, bool preview, const boost::optional<int32_t>& auto_play_delta){return impl_->load(std::move(frame_producer), preview, auto_play_delta);}
 206 void layer::play(){impl_->play();}
 207 void layer::pause(){impl_->pause();}
 208 void layer::resume(){impl_->resume();}
 209 void layer::stop(){impl_->stop();}
 210 draw_frame layer::receive(const video_format_desc& format_desc) {return impl_->receive(format_desc);}
 211 spl::shared_ptr<frame_producer> layer::foreground() const { return impl_->foreground_;}
 212 spl::shared_ptr<frame_producer> layer::background() const { return impl_->background_;}
 213 boost::property_tree::wptree layer::info() const{return impl_->info();}
 214 boost::property_tree::wptree layer::delay_info() const{return impl_->delay_info();}
 215 monitor::subject& layer::monitor_output() {return *impl_->monitor_subject_;}
 216 void layer::on_interaction(const interaction_event::ptr& event) { impl_->on_interaction(event); }
 217 bool layer::collides(double x, double y) const { return impl_->collides(x, y); }
 218 }}