2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>
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4 * This file is part of CasparCG.
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6 * CasparCG is free software: you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation, either version 3 of the License, or
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9 * (at your option) any later version.
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11 * CasparCG is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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16 * You should have received a copy of the GNU General Public License
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17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
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20 #include "../StdAfx.h"
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23 #pragma warning (disable : 4244)
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28 #include "../video_channel_context.h"
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30 #include "../video_format.h"
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31 #include "../mixer/gpu/ogl_device.h"
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32 #include "../mixer/read_frame.h"
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34 #include <common/concurrency/executor.h>
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35 #include <common/utility/assert.h>
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36 #include <common/utility/timer.h>
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37 #include <common/memory/memshfl.h>
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39 #include <boost/circular_buffer.hpp>
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41 namespace caspar { namespace core {
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43 struct output::implementation
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45 typedef std::pair<safe_ptr<const read_frame>, safe_ptr<const read_frame>> fill_and_key;
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47 video_channel_context& channel_;
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49 std::map<int, safe_ptr<frame_consumer>> consumers_;
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50 typedef std::map<int, safe_ptr<frame_consumer>>::value_type layer_t;
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52 high_prec_timer timer_;
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55 implementation(video_channel_context& video_channel)
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56 : channel_(video_channel)
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60 std::pair<size_t, size_t> buffer_depth()
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62 auto depth_comp = [](const layer_t& lhs, const layer_t& rhs){ return lhs.second->buffer_depth() < rhs.second->buffer_depth(); };
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63 auto min = std::min_element(consumers_.begin(), consumers_.end(), depth_comp)->second->buffer_depth();
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64 auto max = std::max_element(consumers_.begin(), consumers_.end(), depth_comp)->second->buffer_depth();
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65 CASPAR_ASSERT(max >= min);
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66 return std::make_pair(min, max);
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69 void add(int index, safe_ptr<frame_consumer>&& consumer)
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71 consumer->initialize(channel_.get_format_desc());
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72 channel_.execution().invoke([&]
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74 this->remove(index);
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75 consumers_.insert(std::make_pair(index, consumer));
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77 CASPAR_LOG(info) << print() << L" " << consumer->print() << L" Added.";
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81 void remove(int index)
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83 channel_.execution().invoke([&]
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85 auto it = consumers_.find(index);
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86 if(it != consumers_.end())
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88 CASPAR_LOG(info) << print() << L" " << it->second->print() << L" Removed.";
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89 consumers_.erase(it);
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94 void execute(const safe_ptr<read_frame>& frame)
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98 if(!has_synchronization_clock())
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99 timer_.tick(1.0/channel_.get_format_desc().fps);
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102 auto key = get_key_frame(frame);
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104 auto it = consumers_.begin();
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105 while(it != consumers_.end())
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109 auto consumer = it->second;
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111 if(consumer->get_video_format_desc() != channel_.get_format_desc())
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112 consumer->initialize(channel_.get_format_desc());
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114 auto frame = consumer->key_only() ? key : fill;
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116 if(static_cast<size_t>(frame->image_data().size()) == consumer->get_video_format_desc().size)
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117 consumer->send(frame);
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123 CASPAR_LOG_CURRENT_EXCEPTION();
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124 consumers_.erase(it++);
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125 CASPAR_LOG(error) << print() << L" " << it->second->print() << L" Removed.";
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131 CASPAR_LOG_CURRENT_EXCEPTION();
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137 bool has_synchronization_clock()
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139 return std::any_of(consumers_.begin(), consumers_.end(), [](const decltype(*consumers_.begin())& p)
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141 return p.second->has_synchronization_clock();
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145 safe_ptr<const read_frame> get_key_frame(const safe_ptr<const read_frame>& frame)
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147 bool has_key_only = std::any_of(consumers_.begin(), consumers_.end(), [](const decltype(*consumers_.begin())& p)
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149 return p.second->key_only();
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154 // Currently do key_only transform on cpu. Unsure if the extra 400MB/s (1080p50) overhead is worth it to do it on gpu.
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155 auto key_data = channel_.ogl().create_host_buffer(frame->image_data().size(), host_buffer::write_only);
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156 fast_memsfhl(key_data->data(), frame->image_data().begin(), frame->image_data().size(), 0x0F0F0F0F, 0x0B0B0B0B, 0x07070707, 0x03030303);
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157 std::vector<int16_t> audio_data(frame->audio_data().begin(), frame->audio_data().end());
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158 return make_safe<read_frame>(std::move(key_data), std::move(audio_data));
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161 return make_safe<read_frame>();
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165 std::wstring print() const
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171 output::output(video_channel_context& video_channel)
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172 : impl_(new implementation(video_channel)){}
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173 void output::add(int index, safe_ptr<frame_consumer>&& consumer){impl_->add(index, std::move(consumer));}
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174 void output::remove(int index){impl_->remove(index);}
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175 void output::execute(const safe_ptr<read_frame>& frame) {impl_->execute(frame); }
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