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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22 #define WIN32_LEAN_AND_MEAN
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24 #include <windows.h>
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25 #include <GL/glew.h>
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26 #include <SFML/Window.hpp>
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28 #include "ogl_consumer.h"
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30 #include <common/gl/gl_check.h>
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31 #include <common/concurrency/executor.h>
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32 #include <common/memory/safe_ptr.h>
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33 #include <common/memory/memcpy.h>
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34 #include <common/diagnostics/graph.h>
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35 #include <common/utility/timer.h>
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37 #include <core/video_format.h>
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38 #include <core/mixer/read_frame.h>
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39 #include <core/consumer/frame_consumer.h>
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41 #include <boost/timer.hpp>
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42 #include <boost/circular_buffer.hpp>
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44 #include <algorithm>
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57 struct ogl_consumer : boost::noncopyable
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63 std::array<GLuint, 2> pbos_;
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65 const bool windowed_;
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66 unsigned int screen_width_;
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67 unsigned int screen_height_;
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68 const unsigned int screen_index_;
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70 const stretch stretch_;
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71 core::video_format_desc format_desc_;
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75 safe_ptr<diagnostics::graph> graph_;
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76 boost::timer perf_timer_;
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78 size_t square_width_;
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79 size_t square_height_;
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81 boost::circular_buffer<safe_ptr<core::read_frame>> input_buffer_;
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82 tbb::concurrent_bounded_queue<safe_ptr<core::read_frame>> frame_buffer_;
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86 ogl_consumer(unsigned int screen_index, stretch stretch, bool windowed, const core::video_format_desc& format_desc)
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88 , windowed_(windowed)
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90 , screen_index_(screen_index)
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91 , format_desc_(format_desc_)
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92 , graph_(diagnostics::create_graph(narrow(print())))
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93 , input_buffer_(core::consumer_buffer_depth()-1)
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94 , executor_(print())
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96 frame_buffer_.set_capacity(2);
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98 graph_->add_guide("frame-time", 0.5);
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99 graph_->set_color("frame-time", diagnostics::color(1.0f, 0.0f, 0.0f));
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100 graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));
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102 format_desc_ = format_desc;
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104 square_width_ = format_desc_.width;
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105 square_height_ = format_desc_.height;
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107 if(format_desc_.format == core::video_format::pal)
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109 square_width_ = 768;
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110 square_height_ = 576;
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112 else if(format_desc_.format == core::video_format::ntsc)
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114 square_width_ = 720;
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115 square_height_ = 547;
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118 screen_width_ = format_desc.width;
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119 screen_height_ = format_desc.height;
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121 DISPLAY_DEVICE d_device;
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122 memset(&d_device, 0, sizeof(d_device));
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123 d_device.cb = sizeof(d_device);
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125 std::vector<DISPLAY_DEVICE> displayDevices;
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126 for(int n = 0; EnumDisplayDevices(NULL, n, &d_device, NULL); ++n)
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128 displayDevices.push_back(d_device);
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129 memset(&d_device, 0, sizeof(d_device));
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130 d_device.cb = sizeof(d_device);
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133 if(screen_index_ >= displayDevices.size())
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134 BOOST_THROW_EXCEPTION(out_of_range() << arg_name_info("screen_index_") << msg_info(narrow(print())));
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137 memset(&devmode, 0, sizeof(devmode));
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139 if(!EnumDisplaySettings(displayDevices[screen_index_].DeviceName, ENUM_CURRENT_SETTINGS, &devmode))
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140 BOOST_THROW_EXCEPTION(invalid_operation() << arg_name_info("screen_index") << msg_info(narrow(print()) + " EnumDisplaySettings"));
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142 screen_width_ = windowed_ ? square_width_ : devmode.dmPelsWidth;
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143 screen_height_ = windowed_ ? square_height_ : devmode.dmPelsHeight;
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146 BOOST_THROW_EXCEPTION(not_supported() << msg_info(narrow(print() + " doesn't support non-Win32 fullscreen"));
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148 if(screen_index != 0)
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149 CASPAR_LOG(warning) << print() << " only supports screen_index=0 for non-Win32";
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151 executor_.invoke([=]
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153 if(!GLEW_VERSION_2_1)
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154 BOOST_THROW_EXCEPTION(not_supported() << msg_info("Missing OpenGL 2.1 support."));
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156 window_.Create(sf::VideoMode(screen_width_, screen_height_, 32), narrow(print()), windowed_ ? sf::Style::Resize : sf::Style::Fullscreen);
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157 window_.ShowMouseCursor(false);
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158 window_.SetPosition(devmode.dmPosition.x, devmode.dmPosition.y);
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159 window_.SetSize(screen_width_, screen_height_);
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160 window_.SetActive();
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161 GL(glEnable(GL_TEXTURE_2D));
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162 GL(glDisable(GL_DEPTH_TEST));
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163 GL(glClearColor(0.0, 0.0, 0.0, 0.0));
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164 GL(glViewport(0, 0, format_desc_.width, format_desc_.height));
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167 calculate_aspect();
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169 glGenTextures(1, &texture_);
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170 glBindTexture(GL_TEXTURE_2D, texture_);
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171 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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172 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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173 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
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174 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
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175 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, format_desc_.width, format_desc_.height, 0, GL_BGRA, GL_UNSIGNED_BYTE, 0);
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176 glBindTexture(GL_TEXTURE_2D, 0);
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178 GL(glGenBuffers(2, pbos_.data()));
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180 glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbos_[0]);
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181 glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, format_desc_.size, 0, GL_STREAM_DRAW_ARB);
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182 glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbos_[1]);
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183 glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, format_desc_.size, 0, GL_STREAM_DRAW_ARB);
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184 glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
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186 CASPAR_LOG(info) << print() << " Sucessfully Initialized.";
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188 executor_.begin_invoke([this]{tick();});
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194 frame_buffer_.push(make_safe<core::read_frame>());
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197 const core::video_format_desc& get_video_format_desc() const
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199 return format_desc_;
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202 void calculate_aspect()
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206 screen_height_ = window_.GetHeight();
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207 screen_width_ = window_.GetWidth();
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210 GL(glViewport(0, 0, screen_width_, screen_height_));
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212 std::pair<float, float> target_ratio = None();
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213 if(stretch_ == fill)
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214 target_ratio = Fill();
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215 else if(stretch_ == uniform)
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216 target_ratio = Uniform();
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217 else if(stretch_ == uniform_to_fill)
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218 target_ratio = UniformToFill();
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220 width_ = target_ratio.first;
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221 height_ = target_ratio.second;
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224 std::pair<float, float> None()
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226 float width = static_cast<float>(square_width_)/static_cast<float>(screen_width_);
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227 float height = static_cast<float>(square_height_)/static_cast<float>(screen_height_);
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229 return std::make_pair(width, height);
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232 std::pair<float, float> Uniform()
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234 float aspect = static_cast<float>(square_width_)/static_cast<float>(square_height_);
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235 float width = std::min(1.0f, static_cast<float>(screen_height_)*aspect/static_cast<float>(screen_width_));
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236 float height = static_cast<float>(screen_width_*width)/static_cast<float>(screen_height_*aspect);
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238 return std::make_pair(width, height);
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241 std::pair<float, float> Fill()
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243 return std::make_pair(1.0f, 1.0f);
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246 std::pair<float, float> UniformToFill()
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248 float wr = static_cast<float>(square_width_)/static_cast<float>(screen_width_);
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249 float hr = static_cast<float>(square_height_)/static_cast<float>(screen_height_);
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250 float r_inv = 1.0f/std::min(wr, hr);
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252 float width = wr*r_inv;
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253 float height = hr*r_inv;
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255 return std::make_pair(width, height);
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258 void render(const safe_ptr<core::read_frame>& frame)
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260 glBindTexture(GL_TEXTURE_2D, texture_);
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262 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbos_[0]);
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263 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, format_desc_.width, format_desc_.height, GL_BGRA, GL_UNSIGNED_BYTE, 0);
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265 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbos_[1]);
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266 glBufferData(GL_PIXEL_UNPACK_BUFFER, format_desc_.size, 0, GL_STREAM_DRAW);
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268 auto ptr = glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY);
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271 fast_memcpy(reinterpret_cast<char*>(ptr), frame->image_data().begin(), frame->image_data().size());
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272 glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER); // release the mapped buffer
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275 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
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277 GL(glClear(GL_COLOR_BUFFER_BIT));
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279 glTexCoord2f(0.0f, 1.0f); glVertex2f(-width_, -height_);
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280 glTexCoord2f(1.0f, 1.0f); glVertex2f( width_, -height_);
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281 glTexCoord2f(1.0f, 0.0f); glVertex2f( width_, height_);
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282 glTexCoord2f(0.0f, 0.0f); glVertex2f(-width_, height_);
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285 glBindTexture(GL_TEXTURE_2D, 0);
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287 std::rotate(pbos_.begin(), pbos_.begin() + 1, pbos_.end());
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290 void send(const safe_ptr<core::read_frame>& frame)
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292 input_buffer_.push_back(frame);
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294 if(input_buffer_.full())
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296 if(!frame_buffer_.try_push(input_buffer_.front()))
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297 graph_->add_tag("dropped-frame");
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301 std::wstring print() const
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303 return L"ogl[" + boost::lexical_cast<std::wstring>(screen_index_) + L"|" + format_desc_.name + L"]";
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310 perf_timer_.restart();
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313 safe_ptr<core::read_frame> frame;
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315 while(window_.GetEvent(e))
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317 if(e.Type == sf::Event::Resized)
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318 calculate_aspect();
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321 frame_buffer_.pop(frame);
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323 if(!frame->image_data().empty())
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327 graph_->update_value("frame-time", static_cast<float>(perf_timer_.elapsed()*format_desc_.fps*0.5));
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331 CASPAR_LOG_CURRENT_EXCEPTION();
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333 executor_.begin_invoke([=]{tick();});
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338 struct ogl_consumer_proxy : public core::frame_consumer
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340 size_t screen_index_;
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341 caspar::stretch stretch_;
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345 std::unique_ptr<ogl_consumer> consumer_;
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349 ogl_consumer_proxy(size_t screen_index, stretch stretch, bool windowed, bool key_only)
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350 : screen_index_(screen_index)
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351 , stretch_(stretch)
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352 , windowed_(windowed)
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353 , key_only_(key_only){}
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355 virtual void initialize(const core::video_format_desc& format_desc)
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357 consumer_.reset(new ogl_consumer(screen_index_, stretch_, windowed_, format_desc));
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360 virtual bool send(const safe_ptr<core::read_frame>& frame)
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362 consumer_->send(frame);
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366 virtual std::wstring print() const
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368 return consumer_->print();
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371 virtual bool key_only() const
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376 virtual bool has_synchronization_clock() const
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381 virtual const core::video_format_desc& get_video_format_desc() const
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383 return consumer_->get_video_format_desc();
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387 safe_ptr<core::frame_consumer> create_ogl_consumer(const std::vector<std::wstring>& params)
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389 if(params.size() < 1 || params[0] != L"SCREEN")
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390 return core::frame_consumer::empty();
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392 size_t screen_index = 0;
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393 stretch stretch = stretch::fill;
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394 bool windowed = true;
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396 if(params.size() > 1)
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397 screen_index = lexical_cast_or_default<int>(params[2], screen_index);
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399 if(params.size() > 2)
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400 windowed = lexical_cast_or_default<bool>(params[3], windowed);
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402 bool key_only = std::find(params.begin(), params.end(), L"KEY_ONLY") != params.end();
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404 return make_safe<ogl_consumer_proxy>(screen_index, stretch, windowed, key_only);
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407 safe_ptr<core::frame_consumer> create_ogl_consumer(const boost::property_tree::ptree& ptree)
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409 size_t screen_index = ptree.get("device", 0);
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410 bool windowed =ptree.get("windowed", true);
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412 stretch stretch = stretch::fill;
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413 auto key_str = ptree.get("stretch", "default");
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414 if(key_str == "uniform")
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415 stretch = stretch::uniform;
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416 else if(key_str == "uniform_to_fill")
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417 stretch = stretch::uniform_to_fill;
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419 bool key_only = ptree.get("key-only", false);
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421 return make_safe<ogl_consumer_proxy>(screen_index, stretch, windowed, key_only);
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