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
20 #include "../../stdafx.h"
\r
22 #include "transition_producer.h"
\r
24 #include "../../format/video_format.h"
\r
25 #include "../../processor/composite_frame.h"
\r
26 #include "../../processor/transform_frame.h"
\r
27 #include "../../processor/frame_processor_device.h"
\r
29 #include "../../producer/frame_producer_device.h"
\r
31 #include <boost/range/algorithm/copy.hpp>
\r
33 namespace caspar { namespace core {
\r
35 struct transition_producer::implementation : boost::noncopyable
\r
37 implementation(const frame_producer_ptr& dest, const transition_info& info)
\r
38 : current_frame_(0), info_(info), dest_producer_(dest), org_dest_producer_(dest)
\r
41 BOOST_THROW_EXCEPTION(null_argument() << arg_name_info("dest"));
\r
44 frame_producer_ptr get_following_producer() const
\r
46 return dest_producer_;
\r
49 void set_leading_producer(const frame_producer_ptr& producer)
\r
51 org_source_producer_ = source_producer_ = producer;
\r
54 gpu_frame_ptr render_frame()
\r
56 if(current_frame_ == 0)
\r
57 CASPAR_LOG(info) << "Transition started.";
\r
59 gpu_frame_ptr result = [&]() -> gpu_frame_ptr
\r
61 if(current_frame_++ >= info_.duration)
\r
64 gpu_frame_ptr source;
\r
67 tbb::parallel_invoke
\r
69 [&]{dest = render_frame(dest_producer_);},
\r
70 [&]{source = render_frame(source_producer_);}
\r
73 return compose(dest, source);
\r
77 CASPAR_LOG(info) << "Transition ended.";
\r
82 gpu_frame_ptr render_frame(frame_producer_ptr& producer)
\r
87 gpu_frame_ptr frame;
\r
90 frame = producer->render_frame();
\r
94 CASPAR_LOG_CURRENT_EXCEPTION();
\r
96 CASPAR_LOG(warning) << "Removed producer from transition.";
\r
99 if(frame == nullptr)
\r
101 if(!producer || !producer->get_following_producer())
\r
106 auto following = producer->get_following_producer();
\r
107 following->initialize(frame_processor_);
\r
108 following->set_leading_producer(producer);
\r
109 producer = following;
\r
113 CASPAR_LOG(warning) << "Failed to initialize following producer. Removing it.";
\r
114 producer = nullptr;
\r
117 return render_frame(producer);
\r
122 gpu_frame_ptr compose(gpu_frame_ptr dest_frame, gpu_frame_ptr src_frame)
\r
124 if(!dest_frame && !src_frame)
\r
127 if(info_.type == transition::cut)
\r
130 double alpha = static_cast<double>(current_frame_)/static_cast<double>(info_.duration);
\r
131 unsigned char volume = static_cast<unsigned char>(alpha*256.0);
\r
133 auto my_src_frame = std::make_shared<transform_frame>(src_frame);
\r
134 auto my_dest_frame = std::make_shared<transform_frame>(dest_frame);
\r
136 my_src_frame->audio_volume(255-volume);
\r
137 my_dest_frame->audio_volume(volume);
\r
139 double dir = info_.direction == transition_direction::from_left ? 1.0 : -1.0;
\r
141 if(info_.type == transition::mix)
\r
142 my_dest_frame->alpha(alpha);
\r
143 else if(info_.type == transition::slide)
\r
144 my_dest_frame->translate((-1.0+alpha)*dir, 0.0);
\r
145 else if(info_.type == transition::push)
\r
147 my_dest_frame->translate((-1.0+alpha)*dir, 0.0);
\r
148 my_src_frame->translate((0.0+alpha)*dir, 0.0);
\r
150 else if(info_.type == transition::wipe)
\r
152 my_dest_frame->translate((-1.0+alpha)*dir, 0.0);
\r
153 my_dest_frame->texcoord((-1.0+alpha)*dir, 1.0, 1.0-(1.0-alpha)*dir, 0.0);
\r
156 return std::make_shared<composite_frame>(my_src_frame, my_dest_frame);
\r
159 void initialize(const frame_processor_device_ptr& frame_processor)
\r
161 dest_producer_->initialize(frame_processor);
\r
162 frame_processor_ = frame_processor;
\r
165 std::wstring print() const
\r
167 return L"transition_producer. dest: " + (org_dest_producer_ ? org_dest_producer_->print() : L"empty") + L" src: " + (org_source_producer_ ? org_source_producer_->print() : L"empty");
\r
170 frame_producer_ptr org_source_producer_;
\r
171 frame_producer_ptr org_dest_producer_;
\r
173 frame_producer_ptr source_producer_;
\r
174 frame_producer_ptr dest_producer_;
\r
176 unsigned short current_frame_;
\r
178 const transition_info info_;
\r
179 frame_processor_device_ptr frame_processor_;
\r
182 transition_producer::transition_producer(const frame_producer_ptr& dest, const transition_info& info) : impl_(new implementation(dest, info)){}
\r
183 gpu_frame_ptr transition_producer::render_frame(){return impl_->render_frame();}
\r
184 frame_producer_ptr transition_producer::get_following_producer() const{return impl_->get_following_producer();}
\r
185 void transition_producer::set_leading_producer(const frame_producer_ptr& producer) { impl_->set_leading_producer(producer); }
\r
186 void transition_producer::initialize(const frame_processor_device_ptr& frame_processor) { impl_->initialize(frame_processor);}
\r
187 std::wstring transition_producer::print() const { return impl_->print();}
\r