2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
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4 * This file is part of CasparCG (www.casparcg.com).
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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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19 * Author: Robert Nagy, ronag89@gmail.com
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22 #include "ogl_consumer.h"
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24 #include <GL/glew.h>
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25 #include <SFML/Window.hpp>
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27 #include <common/diagnostics/graph.h>
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28 #include <common/gl/gl_check.h>
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29 #include <common/log/log.h>
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30 #include <common/memory/safe_ptr.h>
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31 #include <common/memory/memcpy.h>
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32 #include <common/memory/memshfl.h>
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33 #include <common/utility/timer.h>
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34 #include <common/utility/string.h>
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36 #include <ffmpeg/producer/filter/filter.h>
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38 #include <core/video_format.h>
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39 #include <core/mixer/read_frame.h>
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40 #include <core/consumer/frame_consumer.h>
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42 #include <boost/timer.hpp>
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43 #include <boost/circular_buffer.hpp>
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44 #include <boost/foreach.hpp>
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45 #include <boost/thread.hpp>
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46 #include <boost/property_tree/ptree.hpp>
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48 #include <tbb/atomic.h>
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49 #include <tbb/concurrent_queue.h>
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51 #include <boost/assign.hpp>
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53 #include <algorithm>
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56 #if defined(_MSC_VER)
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57 #pragma warning (push)
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58 #pragma warning (disable : 4244)
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62 #define __STDC_CONSTANT_MACROS
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63 #define __STDC_LIMIT_MACROS
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64 #include <libavcodec/avcodec.h>
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65 #include <libavutil/imgutils.h>
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67 #if defined(_MSC_VER)
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68 #pragma warning (pop)
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71 typedef int (*PFNWGLEXTGETSWAPINTERVALPROC) (void);
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73 namespace caspar { namespace ogl {
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83 struct configuration
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93 size_t screen_index;
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96 bool auto_deinterlace;
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98 aspect_ratio aspect;
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106 , auto_deinterlace(true)
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108 , aspect(aspect_invalid)
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114 struct ogl_consumer : boost::noncopyable
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116 const configuration config_;
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117 core::video_format_desc format_desc_;
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118 int channel_index_;
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121 std::vector<GLuint> pbos_;
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125 unsigned int screen_x_;
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126 unsigned int screen_y_;
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127 unsigned int screen_width_;
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128 unsigned int screen_height_;
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129 size_t square_width_;
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130 size_t square_height_;
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132 sf::Window window_;
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134 safe_ptr<diagnostics::graph> graph_;
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135 boost::timer perf_timer_;
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136 boost::timer tick_timer_;
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138 caspar::high_prec_timer wait_timer_;
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140 tbb::concurrent_bounded_queue<safe_ptr<core::read_frame>> frame_buffer_;
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142 boost::thread thread_;
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143 tbb::atomic<bool> is_running_;
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145 ffmpeg::filter filter_;
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147 ogl_consumer(const configuration& config, const core::video_format_desc& format_desc, int channel_index)
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149 , format_desc_(format_desc)
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150 , channel_index_(channel_index)
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153 , screen_width_(format_desc.width)
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154 , screen_height_(format_desc.height)
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155 , square_width_(format_desc.square_width)
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156 , square_height_(format_desc.square_height)
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157 , filter_(format_desc.field_mode == core::field_mode::progressive || !config.auto_deinterlace ? L"" : L"YADIF=1:-1", boost::assign::list_of(PIX_FMT_BGRA))
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159 if(format_desc_.format == core::video_format::ntsc && config_.aspect == configuration::aspect_4_3)
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161 // Use default values which are 4:3.
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165 if(config_.aspect == configuration::aspect_16_9)
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166 square_width_ = (format_desc.height*16)/9;
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167 else if(config_.aspect == configuration::aspect_4_3)
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168 square_width_ = (format_desc.height*4)/3;
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171 frame_buffer_.set_capacity(2);
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173 graph_->set_color("tick-time", diagnostics::color(0.0f, 0.6f, 0.9f));
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174 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
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175 graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));
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177 graph_->set_text(print());
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178 diagnostics::register_graph(graph_);
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180 DISPLAY_DEVICE d_device = {sizeof(d_device), 0};
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181 std::vector<DISPLAY_DEVICE> displayDevices;
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182 for(int n = 0; EnumDisplayDevices(NULL, n, &d_device, NULL); ++n)
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183 displayDevices.push_back(d_device);
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185 if(config_.screen_index >= displayDevices.size())
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186 CASPAR_LOG(warning) << print() << L" Invalid screen-index: " << config_.screen_index;
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188 DEVMODE devmode = {};
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189 if(!EnumDisplaySettings(displayDevices[config_.screen_index].DeviceName, ENUM_CURRENT_SETTINGS, &devmode))
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190 CASPAR_LOG(warning) << print() << L" Could not find display settings for screen-index: " << config_.screen_index;
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192 screen_x_ = devmode.dmPosition.x;
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193 screen_y_ = devmode.dmPosition.y;
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194 screen_width_ = config_.windowed ? square_width_ : devmode.dmPelsWidth;
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195 screen_height_ = config_.windowed ? square_height_ : devmode.dmPelsHeight;
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197 is_running_ = true;
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198 thread_ = boost::thread([this]{run();});
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203 is_running_ = false;
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204 frame_buffer_.try_push(make_safe<core::read_frame>());
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210 if(!GLEW_VERSION_2_1)
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211 BOOST_THROW_EXCEPTION(not_supported() << msg_info("Missing OpenGL 2.1 support."));
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213 window_.Create(sf::VideoMode(screen_width_, screen_height_, 32), narrow(print()), config_.windowed ? sf::Style::Resize | sf::Style::Close : sf::Style::Fullscreen);
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214 window_.ShowMouseCursor(false);
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215 window_.SetPosition(screen_x_, screen_y_);
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216 window_.SetSize(screen_width_, screen_height_);
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217 window_.SetActive();
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218 GL(glEnable(GL_TEXTURE_2D));
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219 GL(glDisable(GL_DEPTH_TEST));
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220 GL(glClearColor(0.0, 0.0, 0.0, 0.0));
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221 GL(glViewport(0, 0, format_desc_.width, format_desc_.height));
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222 GL(glLoadIdentity());
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224 calculate_aspect();
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226 GL(glGenTextures(1, &texture_));
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227 GL(glBindTexture(GL_TEXTURE_2D, texture_));
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228 GL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
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229 GL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
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230 GL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP));
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231 GL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP));
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232 GL(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, format_desc_.width, format_desc_.height, 0, GL_BGRA, GL_UNSIGNED_BYTE, 0));
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233 GL(glBindTexture(GL_TEXTURE_2D, 0));
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235 GL(glGenBuffers(2, pbos_.data()));
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237 glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbos_[0]);
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238 glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, format_desc_.size, 0, GL_STREAM_DRAW_ARB);
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239 glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbos_[1]);
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240 glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, format_desc_.size, 0, GL_STREAM_DRAW_ARB);
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241 glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
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245 auto wglSwapIntervalEXT = reinterpret_cast<void(APIENTRY*)(int)>(wglGetProcAddress("wglSwapIntervalEXT"));
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246 if(wglSwapIntervalEXT)
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248 wglSwapIntervalEXT(1);
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249 CASPAR_LOG(info) << print() << " Successfully enabled vsync.";
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252 CASPAR_LOG(info) << print() << " Failed to enable vsync.";
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255 CASPAR_LOG(info) << print() << " Successfully Initialized.";
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261 glDeleteTextures(1, &texture_);
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263 BOOST_FOREACH(auto& pbo, pbos_)
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266 glDeleteBuffers(1, &pbo);
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282 while(window_.GetEvent(e))
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284 if(e.Type == sf::Event::Resized)
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285 calculate_aspect();
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286 else if(e.Type == sf::Event::Closed)
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287 is_running_ = false;
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290 safe_ptr<core::read_frame> frame;
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292 frame_buffer_.pop(frame);
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294 render_and_draw_frame(frame);
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296 graph_->set_value("tick-time", tick_timer_.elapsed()*format_desc_.fps*0.5);
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297 tick_timer_.restart();
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301 CASPAR_LOG_CURRENT_EXCEPTION();
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302 is_running_ = false;
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310 CASPAR_LOG_CURRENT_EXCEPTION();
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314 void try_sleep_almost_until_vblank()
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316 static const double THRESHOLD = 0.003;
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317 double threshold = config_.vsync ? THRESHOLD : 0.0;
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319 auto frame_time = 1.0 / (format_desc_.fps * format_desc_.field_count);
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321 wait_timer_.tick(frame_time - threshold);
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324 void wait_for_vblank_and_display()
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326 try_sleep_almost_until_vblank();
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328 // Make sure that the next tick measures the duration from this point in time.
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329 wait_timer_.tick(0.0);
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332 safe_ptr<AVFrame> get_av_frame()
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334 safe_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);
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335 avcodec_get_frame_defaults(av_frame.get());
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337 av_frame->linesize[0] = format_desc_.width*4;
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338 av_frame->format = PIX_FMT_BGRA;
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339 av_frame->width = format_desc_.width;
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340 av_frame->height = format_desc_.height;
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341 av_frame->interlaced_frame = format_desc_.field_mode != core::field_mode::progressive;
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342 av_frame->top_field_first = format_desc_.field_mode == core::field_mode::upper ? 1 : 0;
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347 void render_and_draw_frame(const safe_ptr<core::read_frame>& frame)
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349 if(static_cast<size_t>(frame->image_data().size()) != format_desc_.size)
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352 perf_timer_.restart();
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353 auto av_frame = get_av_frame();
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354 av_frame->data[0] = const_cast<uint8_t*>(frame->image_data().begin());
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356 filter_.push(av_frame);
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357 auto frames = filter_.poll_all();
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359 if (frames.empty())
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362 if (frames.size() == 1)
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364 render(frames[0], frame->image_data().size());
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365 graph_->set_value("frame-time", perf_timer_.elapsed() * format_desc_.fps * 0.5);
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367 wait_for_vblank_and_display(); // progressive frame
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369 else if (frames.size() == 2)
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371 render(frames[0], frame->image_data().size());
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372 double perf_elapsed = perf_timer_.elapsed();
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374 wait_for_vblank_and_display(); // field1
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376 perf_timer_.restart();
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377 render(frames[1], frame->image_data().size());
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378 perf_elapsed += perf_timer_.elapsed();
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379 graph_->set_value("frame-time", perf_elapsed * format_desc_.fps * 0.5);
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381 wait_for_vblank_and_display(); // field2
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385 void render(safe_ptr<AVFrame> av_frame, int image_data_size)
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387 if(av_frame->linesize[0] != static_cast<int>(format_desc_.width*4))
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389 const uint8_t *src_data[4] = {0};
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390 memcpy(const_cast<uint8_t**>(&src_data[0]), av_frame->data, 4);
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391 const int src_linesizes[4] = {0};
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392 memcpy(const_cast<int*>(&src_linesizes[0]), av_frame->linesize, 4);
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394 auto av_frame2 = get_av_frame();
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395 av_image_alloc(av_frame2->data, av_frame2->linesize, av_frame2->width, av_frame2->height, PIX_FMT_BGRA, 16);
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396 av_frame = safe_ptr<AVFrame>(av_frame2.get(), [=](AVFrame*)
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398 av_freep(&av_frame2->data[0]);
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401 av_image_copy(av_frame2->data, av_frame2->linesize, src_data, src_linesizes, PIX_FMT_BGRA, av_frame2->width, av_frame2->height);
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404 glBindTexture(GL_TEXTURE_2D, texture_);
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406 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbos_[0]);
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407 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, format_desc_.width, format_desc_.height, GL_BGRA, GL_UNSIGNED_BYTE, 0);
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409 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbos_[1]);
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410 glBufferData(GL_PIXEL_UNPACK_BUFFER, format_desc_.size, 0, GL_STREAM_DRAW);
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412 auto ptr = glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY);
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415 if(config_.key_only)
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416 fast_memshfl(reinterpret_cast<char*>(ptr), av_frame->data[0], image_data_size, 0x0F0F0F0F, 0x0B0B0B0B, 0x07070707, 0x03030303);
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418 fast_memcpy(reinterpret_cast<char*>(ptr), av_frame->data[0], image_data_size);
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420 glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER); // release the mapped buffer
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423 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
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425 GL(glClear(GL_COLOR_BUFFER_BIT));
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427 glTexCoord2f(0.0f, 1.0f); glVertex2f(-width_, -height_);
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428 glTexCoord2f(1.0f, 1.0f); glVertex2f( width_, -height_);
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429 glTexCoord2f(1.0f, 0.0f); glVertex2f( width_, height_);
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430 glTexCoord2f(0.0f, 0.0f); glVertex2f(-width_, height_);
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433 glBindTexture(GL_TEXTURE_2D, 0);
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435 std::rotate(pbos_.begin(), pbos_.begin() + 1, pbos_.end());
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438 bool send(const safe_ptr<core::read_frame>& frame)
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440 if (!frame_buffer_.try_push(frame))
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441 graph_->set_tag("dropped-frame");
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443 return is_running_;
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446 std::wstring print() const
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448 return config_.name + L"[" + boost::lexical_cast<std::wstring>(channel_index_) + L"|" + format_desc_.name + L"]";
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451 void calculate_aspect()
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453 if(config_.windowed)
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455 screen_height_ = window_.GetHeight();
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456 screen_width_ = window_.GetWidth();
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459 GL(glViewport(0, 0, screen_width_, screen_height_));
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461 std::pair<float, float> target_ratio = None();
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462 if(config_.stretch == fill)
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463 target_ratio = Fill();
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464 else if(config_.stretch == uniform)
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465 target_ratio = Uniform();
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466 else if(config_.stretch == uniform_to_fill)
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467 target_ratio = UniformToFill();
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469 width_ = target_ratio.first;
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470 height_ = target_ratio.second;
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473 std::pair<float, float> None()
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475 float width = static_cast<float>(square_width_)/static_cast<float>(screen_width_);
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476 float height = static_cast<float>(square_height_)/static_cast<float>(screen_height_);
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478 return std::make_pair(width, height);
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481 std::pair<float, float> Uniform()
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483 float aspect = static_cast<float>(square_width_)/static_cast<float>(square_height_);
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484 float width = std::min(1.0f, static_cast<float>(screen_height_)*aspect/static_cast<float>(screen_width_));
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485 float height = static_cast<float>(screen_width_*width)/static_cast<float>(screen_height_*aspect);
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487 return std::make_pair(width, height);
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490 std::pair<float, float> Fill()
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492 return std::make_pair(1.0f, 1.0f);
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495 std::pair<float, float> UniformToFill()
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497 float wr = static_cast<float>(square_width_)/static_cast<float>(screen_width_);
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498 float hr = static_cast<float>(square_height_)/static_cast<float>(screen_height_);
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499 float r_inv = 1.0f/std::min(wr, hr);
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501 float width = wr*r_inv;
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502 float height = hr*r_inv;
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504 return std::make_pair(width, height);
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509 struct ogl_consumer_proxy : public core::frame_consumer
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511 const configuration config_;
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512 std::unique_ptr<ogl_consumer> consumer_;
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516 ogl_consumer_proxy(const configuration& config)
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517 : config_(config){}
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519 ~ogl_consumer_proxy()
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523 auto str = print();
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525 CASPAR_LOG(info) << str << L" Successfully Uninitialized.";
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531 virtual void initialize(const core::video_format_desc& format_desc, int channel_index) override
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534 consumer_.reset(new ogl_consumer(config_, format_desc, channel_index));
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535 CASPAR_LOG(info) << print() << L" Successfully Initialized.";
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538 virtual bool send(const safe_ptr<core::read_frame>& frame) override
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540 return consumer_->send(frame);
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543 virtual std::wstring print() const override
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545 return consumer_ ? consumer_->print() : L"[ogl_consumer]";
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548 virtual boost::property_tree::wptree info() const override
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550 boost::property_tree::wptree info;
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551 info.add(L"type", L"ogl-consumer");
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552 info.add(L"key-only", config_.key_only);
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553 info.add(L"windowed", config_.windowed);
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554 info.add(L"auto-deinterlace", config_.auto_deinterlace);
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558 virtual bool has_synchronization_clock() const override
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563 virtual size_t buffer_depth() const override
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568 virtual int index() const override
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574 safe_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)
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576 if(params.size() < 1 || params[0] != L"SCREEN")
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577 return core::frame_consumer::empty();
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579 configuration config;
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581 auto device_it = std::find(params.begin(), params.end(), L"DEVICE");
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582 if(device_it != params.end() && ++device_it != params.end())
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583 config.screen_index = boost::lexical_cast<int>(*device_it);
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585 config.windowed = std::find(params.begin(), params.end(), L"FULLSCREEN") == params.end();
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586 config.key_only = std::find(params.begin(), params.end(), L"KEY_ONLY") != params.end();
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588 auto name_it = std::find(params.begin(), params.end(), L"NAME");
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589 if(name_it != params.end() && ++name_it != params.end())
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590 config.name = *name_it;
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592 return make_safe<ogl_consumer_proxy>(config);
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595 safe_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree)
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597 configuration config;
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598 config.name = ptree.get(L"name", config.name);
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599 config.screen_index = ptree.get(L"device", config.screen_index+1)-1;
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600 config.windowed = ptree.get(L"windowed", config.windowed);
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601 config.key_only = ptree.get(L"key-only", config.key_only);
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602 config.auto_deinterlace = ptree.get(L"auto-deinterlace", config.auto_deinterlace);
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603 config.vsync = ptree.get(L"vsync", config.vsync);
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605 auto stretch_str = ptree.get(L"stretch", L"default");
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606 if(stretch_str == L"uniform")
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607 config.stretch = stretch::uniform;
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608 else if(stretch_str == L"uniform_to_fill")
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609 config.stretch = stretch::uniform_to_fill;
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611 auto aspect_str = ptree.get(L"aspect-ratio", L"default");
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612 if(aspect_str == L"16:9")
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613 config.aspect = configuration::aspect_16_9;
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614 else if(aspect_str == L"4:3")
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615 config.aspect = configuration::aspect_4_3;
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617 return make_safe<ogl_consumer_proxy>(config);
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