git.sesse.net Git - casparcg/blob - modules/ogl/consumer/ogl_consumer.cpp

   1 /*\r
   2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 *  This file is part of CasparCG.\r
   5 *\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
  10 *\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
  15 \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
  18 *\r
  19 */\r
  20 \r
  21 #define NOMINMAX\r
  22 \r
  23 #include <windows.h>\r
  24 #include <Glee.h>\r
  25 #include <SFML/Window.hpp>\r
  26 \r
  27 #include "ogl_consumer.h"\r
  28 \r
  29 #include <core/video_format.h>\r
  30 #include <core/consumer/frame/read_frame.h>\r
  31 \r
  32 #include <common/gl/gl_check.h>\r
  33 #include <common/concurrency/executor.h>\r
  34 #include <common/memory/safe_ptr.h>\r
  35 #include <common/memory/memcpy.h>\r
  36 #include <common/diagnostics/graph.h>\r
  37 #include <common/utility/timer.h>\r
  38 \r
  39 #include <boost/thread.hpp>\r
  40 #include <boost/timer.hpp>\r
  41 \r
  42 #include <algorithm>\r
  43 #include <array>\r
  44 \r
  45 namespace caspar {\r
  46 \r
  47 struct ogl_consumer : boost::noncopyable\r
  48 {               \r
  49         boost::unique_future<void> active_;\r
  50                 \r
  51         float width_;\r
  52         float height_;\r
  53 \r
  54         GLuint                            texture_;\r
  55         std::array<GLuint, 2> pbos_;\r
  56 \r
  57         const bool windowed_;\r
  58         unsigned int screen_width_;\r
  59         unsigned int screen_height_;\r
  60         const unsigned int screen_index_;\r
  61                                 \r
  62         const stretch stretch_;\r
  63         core::video_format_desc format_desc_;\r
  64         \r
  65         sf::Window window_;\r
  66         \r
  67         safe_ptr<diagnostics::graph> graph_;\r
  68         boost::timer perf_timer_;\r
  69 \r
  70         size_t square_width_;\r
  71         size_t square_height_;\r
  72 \r
  73         executor executor_;\r
  74 public:\r
  75         ogl_consumer(unsigned int screen_index, stretch stretch, bool windowed, const core::video_format_desc& format_desc) \r
  76                 : stretch_(stretch)\r
  77                 , windowed_(windowed)\r
  78                 , texture_(0)\r
  79                 , screen_index_(screen_index)\r
  80                 , format_desc_(format_desc_)\r
  81                 , graph_(diagnostics::create_graph(narrow(print())))\r
  82                 , executor_(print())\r
  83         {               \r
  84                 executor_.set_capacity(3);\r
  85                 graph_->add_guide("frame-time", 0.5);\r
  86                 graph_->set_color("frame-time", diagnostics::color(1.0f, 0.0f, 0.0f));\r
  87                 if(!GLEE_VERSION_2_1)\r
  88                         BOOST_THROW_EXCEPTION(not_supported() << msg_info("Missing OpenGL 2.1 support."));\r
  89                 \r
  90                 format_desc_ = format_desc;\r
  91 \r
  92                 square_width_ = format_desc_.width;\r
  93                 square_height_ = format_desc_.height;\r
  94                                                 \r
  95                 if(format_desc_.format == core::video_format::pal)\r
  96                 {\r
  97                         square_width_ = 768;\r
  98                         square_height_ = 576;\r
  99                 }\r
 100                 else if(format_desc_.format == core::video_format::ntsc)\r
 101                 {\r
 102                         square_width_ = 720;\r
 103                         square_height_ = 547;\r
 104                 }\r
 105 \r
 106                 screen_width_ = format_desc.width;\r
 107                 screen_height_ = format_desc.height;\r
 108 #ifdef _WIN32\r
 109                 DISPLAY_DEVICE d_device;                        \r
 110                 memset(&d_device, 0, sizeof(d_device));\r
 111                 d_device.cb = sizeof(d_device);\r
 112 \r
 113                 std::vector<DISPLAY_DEVICE> displayDevices;\r
 114                 for(int n = 0; EnumDisplayDevices(NULL, n, &d_device, NULL); ++n)\r
 115                 {\r
 116                         displayDevices.push_back(d_device);\r
 117                         memset(&d_device, 0, sizeof(d_device));\r
 118                         d_device.cb = sizeof(d_device);\r
 119                 }\r
 120 \r
 121                 if(screen_index_ >= displayDevices.size())\r
 122                         BOOST_THROW_EXCEPTION(out_of_range() << arg_name_info("screen_index_") << msg_info(narrow(print())));\r
 123                 \r
 124                 DEVMODE devmode;\r
 125                 memset(&devmode, 0, sizeof(devmode));\r
 126                 \r
 127                 if(!EnumDisplaySettings(displayDevices[screen_index_].DeviceName, ENUM_CURRENT_SETTINGS, &devmode))\r
 128                         BOOST_THROW_EXCEPTION(invalid_operation() << arg_name_info("screen_index") << msg_info(narrow(print()) + " EnumDisplaySettings"));\r
 129                 \r
 130                 screen_width_ = windowed_ ? square_width_ : devmode.dmPelsWidth;\r
 131                 screen_height_ = windowed_ ? square_height_ : devmode.dmPelsHeight;\r
 132 #else\r
 133                 if(!windowed)\r
 134                         BOOST_THROW_EXCEPTION(not_supported() << msg_info(narrow(print() + " doesn't support non-Win32 fullscreen"));\r
 135 \r
 136                 if(screen_index != 0)\r
 137                         CASPAR_LOG(warning) << print() << " only supports screen_index=0 for non-Win32";\r
 138 #endif          \r
 139                 executor_.start();\r
 140                 executor_.invoke([=]\r
 141                 {\r
 142                         window_.Create(sf::VideoMode(screen_width_, screen_height_, 32), narrow(print()), windowed_ ? sf::Style::Resize : sf::Style::Fullscreen);\r
 143                         window_.ShowMouseCursor(false);\r
 144                         window_.SetPosition(devmode.dmPosition.x, devmode.dmPosition.y);\r
 145                         window_.SetSize(screen_width_, screen_height_);\r
 146                         window_.SetActive();\r
 147                         GL(glEnable(GL_TEXTURE_2D));\r
 148                         GL(glDisable(GL_DEPTH_TEST));           \r
 149                         GL(glClearColor(0.0, 0.0, 0.0, 0.0));\r
 150                         GL(glViewport(0, 0, format_desc_.width, format_desc_.height));\r
 151                         glLoadIdentity();\r
 152                                 \r
 153                         calculate_aspect();\r
 154                         \r
 155                         glGenTextures(1, &texture_);\r
 156                         glBindTexture(GL_TEXTURE_2D, texture_);\r
 157                         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);\r
 158                         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);\r
 159                         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);\r
 160                         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);\r
 161                         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, format_desc_.width, format_desc_.height, 0, GL_BGRA, GL_UNSIGNED_BYTE, 0);\r
 162                         glBindTexture(GL_TEXTURE_2D, 0);\r
 163                         \r
 164                         GL(glGenBuffers(2, pbos_.data()));\r
 165                         \r
 166                         glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbos_[0]);\r
 167                         glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, format_desc_.size, 0, GL_STREAM_DRAW_ARB);\r
 168                         glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbos_[1]);\r
 169                         glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, format_desc_.size, 0, GL_STREAM_DRAW_ARB);\r
 170                         glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);\r
 171                 });\r
 172                 CASPAR_LOG(info) << print() << " Sucessfully Initialized.";\r
 173         }\r
 174         \r
 175         void calculate_aspect()\r
 176         {\r
 177                 if(windowed_)\r
 178                 {\r
 179                         screen_height_ = window_.GetHeight();\r
 180                         screen_width_ = window_.GetWidth();\r
 181                 }\r
 182                 \r
 183                 GL(glViewport(0, 0, screen_width_, screen_height_));\r
 184 \r
 185                 std::pair<float, float> target_ratio = None();\r
 186                 if(stretch_ == fill)\r
 187                         target_ratio = Fill();\r
 188                 else if(stretch_ == uniform)\r
 189                         target_ratio = Uniform();\r
 190                 else if(stretch_ == uniform_to_fill)\r
 191                         target_ratio = UniformToFill();\r
 192 \r
 193                 width_ = target_ratio.first;\r
 194                 height_ = target_ratio.second;\r
 195         }\r
 196                 \r
 197         std::pair<float, float> None()\r
 198         {\r
 199                 float width = static_cast<float>(square_width_)/static_cast<float>(screen_width_);\r
 200                 float height = static_cast<float>(square_height_)/static_cast<float>(screen_height_);\r
 201 \r
 202                 return std::make_pair(width, height);\r
 203         }\r
 204 \r
 205         std::pair<float, float> Uniform()\r
 206         {\r
 207                 float aspect = static_cast<float>(square_width_)/static_cast<float>(square_height_);\r
 208                 float width = std::min(1.0f, static_cast<float>(screen_height_)*aspect/static_cast<float>(screen_width_));\r
 209                 float height = static_cast<float>(screen_width_*width)/static_cast<float>(screen_height_*aspect);\r
 210 \r
 211                 return std::make_pair(width, height);\r
 212         }\r
 213 \r
 214         std::pair<float, float> Fill()\r
 215         {\r
 216                 return std::make_pair(1.0f, 1.0f);\r
 217         }\r
 218 \r
 219         std::pair<float, float> UniformToFill()\r
 220         {\r
 221                 float wr = static_cast<float>(square_width_)/static_cast<float>(screen_width_);\r
 222                 float hr = static_cast<float>(square_height_)/static_cast<float>(screen_height_);\r
 223                 float r_inv = 1.0f/std::min(wr, hr);\r
 224 \r
 225                 float width = wr*r_inv;\r
 226                 float height = hr*r_inv;\r
 227 \r
 228                 return std::make_pair(width, height);\r
 229         }\r
 230 \r
 231         void render(const safe_ptr<const core::read_frame>& frame)\r
 232         {                       \r
 233                 glBindTexture(GL_TEXTURE_2D, texture_);\r
 234                 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbos_[0]);\r
 235 \r
 236                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, format_desc_.width, format_desc_.height, GL_BGRA, GL_UNSIGNED_BYTE, 0);\r
 237 \r
 238                 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbos_[1]);\r
 239 \r
 240                 glBufferData(GL_PIXEL_UNPACK_BUFFER, format_desc_.size, 0, GL_STREAM_DRAW);\r
 241 \r
 242                 auto ptr = glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY);\r
 243                 if(ptr)\r
 244                 {\r
 245                         fast_memcpy(reinterpret_cast<char*>(ptr), frame->image_data().begin(), frame->image_data().size());\r
 246                         glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER); // release the mapped buffer\r
 247                 }\r
 248 \r
 249                 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);\r
 250                                 \r
 251                 GL(glClear(GL_COLOR_BUFFER_BIT));                       \r
 252                 glBegin(GL_QUADS);\r
 253                                 glTexCoord2f(0.0f,        1.0f);        glVertex2f(-width_, -height_);\r
 254                                 glTexCoord2f(1.0f,        1.0f);        glVertex2f( width_, -height_);\r
 255                                 glTexCoord2f(1.0f,        0.0f);        glVertex2f( width_,  height_);\r
 256                                 glTexCoord2f(0.0f,        0.0f);        glVertex2f(-width_,  height_);\r
 257                 glEnd();\r
 258                 \r
 259                 glBindTexture(GL_TEXTURE_2D, 0);\r
 260 \r
 261                 std::rotate(pbos_.begin(), pbos_.begin() + 1, pbos_.end());\r
 262         }\r
 263                 \r
 264         void send(const safe_ptr<const core::read_frame>& frame)\r
 265         {\r
 266                 if(executor_.size() >= executor_.capacity()-1)\r
 267                         return;\r
 268 \r
 269                 executor_.begin_invoke([=]\r
 270                 {\r
 271                         perf_timer_.restart();\r
 272                         sf::Event e;\r
 273                         while(window_.GetEvent(e))\r
 274                         {\r
 275                                 if(e.Type == sf::Event::Resized)\r
 276                                          calculate_aspect();\r
 277                         }\r
 278                         render(frame);\r
 279                         window_.Display();\r
 280                         graph_->update_value("frame-time", static_cast<float>(perf_timer_.elapsed()*format_desc_.fps*0.5));\r
 281                 });\r
 282         }\r
 283 \r
 284         std::wstring print() const\r
 285         {       \r
 286                 return  L"ogl[" + boost::lexical_cast<std::wstring>(screen_index_) + L"|" + format_desc_.name + L"]";\r
 287         }\r
 288 \r
 289         size_t buffer_depth() const{return 2;}\r
 290 };\r
 291 \r
 292 \r
 293 struct ogl_consumer_proxy : public core::frame_consumer\r
 294 {\r
 295         size_t screen_index_;\r
 296         caspar::stretch stretch_;\r
 297         bool windowed_;\r
 298 \r
 299         std::unique_ptr<ogl_consumer> consumer_;\r
 300 \r
 301 public:\r
 302 \r
 303         ogl_consumer_proxy(size_t screen_index, stretch stretch, bool windowed)\r
 304                 : screen_index_(screen_index)\r
 305                 , stretch_(stretch)\r
 306                 , windowed_(windowed){}\r
 307         \r
 308         virtual void initialize(const core::video_format_desc& format_desc)\r
 309         {\r
 310                 consumer_.reset(new ogl_consumer(screen_index_, stretch_, windowed_, format_desc));\r
 311         }\r
 312         \r
 313         virtual void send(const safe_ptr<const core::read_frame>& frame)\r
 314         {\r
 315                 consumer_->send(frame);\r
 316         }\r
 317         \r
 318         virtual std::wstring print() const\r
 319         {\r
 320                 return consumer_->print();\r
 321         }\r
 322 };      \r
 323 \r
 324 safe_ptr<core::frame_consumer> create_ogl_consumer(const std::vector<std::wstring>& params)\r
 325 {\r
 326         if(params.size() < 1 || params[0] != L"OGL")\r
 327                 return core::frame_consumer::empty();\r
 328         \r
 329         size_t screen_index = 0;\r
 330         stretch stretch = stretch::fill;\r
 331         bool windowed = true;\r
 332         \r
 333         if(params.size() > 1) \r
 334                 screen_index = lexical_cast_or_default<int>(params[2], screen_index);\r
 335 \r
 336         if(params.size() > 2) \r
 337                 windowed = lexical_cast_or_default<bool>(params[3], windowed);\r
 338 \r
 339         return make_safe<ogl_consumer_proxy>(screen_index, stretch, windowed);\r
 340 }\r
 341 \r
 342 safe_ptr<core::frame_consumer> create_ogl_consumer(const boost::property_tree::ptree& ptree) \r
 343 {\r
 344         size_t screen_index = ptree.get("device", 0);\r
 345         bool windowed =ptree.get("windowed", true);\r
 346         \r
 347         stretch stretch = stretch::fill;\r
 348         auto key_str = ptree.get("stretch", "default");\r
 349         if(key_str == "uniform")\r
 350                 stretch = stretch::uniform;\r
 351         else if(key_str == "uniform_to_fill")\r
 352                 stretch = stretch::uniform_to_fill;\r
 353 \r
 354         return make_safe<ogl_consumer_proxy>(screen_index, stretch, windowed);\r
 355 }\r
 356 \r
 357 }