2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>
\r
4 * This file is part of CasparCG.
\r
6 * CasparCG is free software: you can redistribute it and/or modify
\r
7 * it under the terms of the GNU General Public License as published by
\r
8 * the Free Software Foundation, either version 3 of the License, or
\r
9 * (at your option) any later version.
\r
11 * CasparCG is distributed in the hope that it will be useful,
\r
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
\r
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\r
14 * GNU General Public License for more details.
\r
16 * You should have received a copy of the GNU General Public License
\r
17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
\r
21 #include "../stdafx.h"
\r
25 #include "frame_producer.h"
\r
26 #include "frame/basic_frame.h"
\r
28 namespace caspar { namespace core {
\r
30 struct layer::implementation
\r
32 safe_ptr<frame_producer> foreground_;
\r
33 safe_ptr<frame_producer> background_;
\r
34 int64_t frame_number_;
\r
35 int auto_play_delta_;
\r
40 : foreground_(frame_producer::empty())
\r
41 , background_(frame_producer::empty())
\r
43 , auto_play_delta_(-1)
\r
58 void load(const safe_ptr<frame_producer>& producer, bool preview, int auto_play_delta)
\r
60 background_ = producer;
\r
61 auto_play_delta_ = auto_play_delta;
\r
63 if(preview) // Play the first frame and pause.
\r
73 if(background_ != frame_producer::empty())
\r
75 background_->set_leading_producer(foreground_);
\r
77 foreground_ = background_;
\r
78 background_ = frame_producer::empty();
\r
80 auto_play_delta_ = -1;
\r
88 foreground_ = frame_producer::empty();
\r
89 background_ = background_;
\r
91 auto_play_delta_ = -1;
\r
96 safe_ptr<basic_frame> receive()
\r
101 return disable_audio(foreground_->last_frame());
\r
103 auto frame = receive_and_follow(foreground_, frame_producer::NO_HINT);
\r
104 if(frame == core::basic_frame::late())
\r
105 return foreground_->last_frame();
\r
107 auto frames_left = foreground_->nb_frames() - (++frame_number_) - auto_play_delta_;
\r
108 if(auto_play_delta_ > -1 && frames_left < 1)
\r
118 CASPAR_LOG_CURRENT_EXCEPTION();
\r
120 return core::basic_frame::empty();
\r
124 layer_status status() const
\r
126 layer_status status;
\r
127 status.foreground = foreground_->print();
\r
128 status.background = background_->print();
\r
129 status.is_paused = is_paused_;
\r
130 status.total_frames = foreground_->nb_frames();
\r
131 status.current_frame = frame_number_;
\r
138 return background_ == core::frame_producer::empty() && foreground_ == core::frame_producer::empty();
\r
142 layer::layer() : impl_(new implementation()){}
\r
143 layer::layer(layer&& other) : impl_(std::move(other.impl_)){}
\r
144 layer& layer::operator=(layer&& other)
\r
146 impl_ = std::move(other.impl_);
\r
149 layer::layer(const layer& other) : impl_(new implementation(*other.impl_)){}
\r
150 layer& layer::operator=(const layer& other)
\r
156 void layer::swap(layer& other)
\r
158 impl_.swap(other.impl_);
\r
160 void layer::load(const safe_ptr<frame_producer>& frame_producer, bool preview, int auto_play_delta){return impl_->load(frame_producer, preview, auto_play_delta);}
\r
161 void layer::play(){impl_->play();}
\r
162 void layer::pause(){impl_->pause();}
\r
163 void layer::stop(){impl_->stop();}
\r
164 bool layer::is_paused() const{return impl_->is_paused_;}
\r
165 int64_t layer::frame_number() const{return impl_->frame_number_;}
\r
166 layer_status layer::status() const {return impl_->status();}
\r
167 safe_ptr<basic_frame> layer::receive() {return impl_->receive();}
\r
168 safe_ptr<frame_producer> layer::foreground() const { return impl_->foreground_;}
\r
169 safe_ptr<frame_producer> layer::background() const { return impl_->background_;}
\r
170 bool layer::empty() const {return impl_->empty();}
\r