2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
4 * This file is part of CasparCG (www.casparcg.com).
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.
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.
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/>.
19 * Author: Robert Nagy, ronag89@gmail.com
22 #include "../stdafx.h"
26 #include "frame_producer.h"
28 #include "../video_format.h"
29 #include "../frame/draw_frame.h"
30 #include "../frame/frame_transform.h"
32 #include <boost/optional.hpp>
33 #include <boost/thread/future.hpp>
35 namespace caspar { namespace core {
39 monitor::subject monitor_subject_;
40 spl::shared_ptr<frame_producer> foreground_;
41 spl::shared_ptr<frame_producer> background_;
42 boost::optional<int32_t> auto_play_delta_;
46 : monitor_subject_("/layer/" + boost::lexical_cast<std::string>(index))
47 // , foreground_event_subject_("")
48 // , background_event_subject_("background")
49 , foreground_(frame_producer::empty())
50 , background_(frame_producer::empty())
52 // foreground_event_subject_.subscribe(event_subject_);
53 // background_event_subject_.subscribe(event_subject_);
56 void set_foreground(spl::shared_ptr<frame_producer> producer)
58 foreground_->monitor_output().unlink_target(&monitor_subject_);
59 foreground_ = std::move(producer);
60 foreground_->monitor_output().link_target(&monitor_subject_);
65 foreground_->paused(true);
68 void load(spl::shared_ptr<frame_producer> producer, bool preview, const boost::optional<int32_t>& auto_play_delta)
70 // background_->unsubscribe(background_event_subject_);
71 background_ = std::move(producer);
72 // background_->subscribe(background_event_subject_);
74 auto_play_delta_ = auto_play_delta;
79 foreground_->paused(true);
82 if(auto_play_delta_ && foreground_ == frame_producer::empty())
88 if(background_ != frame_producer::empty())
90 background_->leading_producer(foreground_);
92 set_foreground(background_);
93 background_ = std::move(frame_producer::empty());
95 auto_play_delta_.reset();
98 foreground_->paused(false);
103 set_foreground(frame_producer::empty());
105 auto_play_delta_.reset();
108 draw_frame receive(const video_format_desc& format_desc)
112 auto frame = foreground_->receive();
114 if(frame == core::draw_frame::late())
115 return foreground_->last_frame();
119 auto frames_left = static_cast<int64_t>(foreground_->nb_frames()) - foreground_->frame_number() - static_cast<int64_t>(*auto_play_delta_);
123 return receive(format_desc);
127 //event_subject_ << monitor::event("time") % monitor::duration(foreground_->frame_number()/format_desc.fps)
128 // % monitor::duration(static_cast<int64_t>(foreground_->nb_frames()) - static_cast<int64_t>(auto_play_delta_ ? *auto_play_delta_ : 0)/format_desc.fps)
129 // << monitor::event("frame") % static_cast<int64_t>(foreground_->frame_number())
130 // % static_cast<int64_t>((static_cast<int64_t>(foreground_->nb_frames()) - static_cast<int64_t>(auto_play_delta_ ? *auto_play_delta_ : 0)));
132 //foreground_event_subject_ << monitor::event("type") % foreground_->name();
133 //background_event_subject_ << monitor::event("type") % background_->name();
139 CASPAR_LOG_CURRENT_EXCEPTION();
141 return core::draw_frame::empty();
145 boost::property_tree::wptree info() const
147 boost::property_tree::wptree info;
148 info.add(L"auto_delta", (auto_play_delta_ ? boost::lexical_cast<std::wstring>(*auto_play_delta_) : L"null"));
149 info.add(L"frame-number", foreground_->frame_number());
151 auto nb_frames = foreground_->nb_frames();
153 info.add(L"nb_frames", nb_frames == std::numeric_limits<int64_t>::max() ? -1 : nb_frames);
154 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)));
155 info.add_child(L"producer", foreground_->info());
156 info.add_child(L"background.producer", background_->info());
160 void on_interaction(const interaction_event::ptr& event)
162 foreground_->on_interaction(event);
165 bool collides(double x, double y) const
167 return foreground_->collides(x, y);
171 layer::layer(int index) : impl_(new impl(index)){}
172 layer::layer(layer&& other) : impl_(std::move(other.impl_)){}
173 layer& layer::operator=(layer&& other)
178 void layer::swap(layer& other)
180 impl_.swap(other.impl_);
182 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);}
183 void layer::play(){impl_->play();}
184 void layer::pause(){impl_->pause();}
185 void layer::stop(){impl_->stop();}
186 draw_frame layer::receive(const video_format_desc& format_desc) {return impl_->receive(format_desc);}
187 spl::shared_ptr<frame_producer> layer::foreground() const { return impl_->foreground_;}
188 spl::shared_ptr<frame_producer> layer::background() const { return impl_->background_;}
189 boost::property_tree::wptree layer::info() const{return impl_->info();}
190 monitor::source& layer::monitor_output() {return impl_->monitor_subject_;}
191 void layer::on_interaction(const interaction_event::ptr& event) { impl_->on_interaction(event); }
192 bool layer::collides(double x, double y) const { return impl_->collides(x, y); }