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

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\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 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 #include "ogl_consumer.h"\r
  23 \r
  24 #include <GL/glew.h>\r
  25 #include <SFML/Window.hpp>\r
  26 \r
  27 #include <common/diagnostics/graph.h>\r
  28 #include <common/gl/gl_check.h>\r
  29 #include <common/log/log.h>\r
  30 #include <common/memory/safe_ptr.h>\r
  31 #include <common/memory/memcpy.h>\r
  32 #include <common/memory/memshfl.h>\r
  33 #include <common/utility/timer.h>\r
  34 #include <common/utility/string.h>\r
  35 #include <common/concurrency/future_util.h>\r
  36 \r
  37 #include <ffmpeg/producer/filter/filter.h>\r
  38 \r
  39 #include <core/video_format.h>\r
  40 #include <core/mixer/read_frame.h>\r
  41 #include <core/consumer/frame_consumer.h>\r
  42 \r
  43 #include <boost/timer.hpp>\r
  44 #include <boost/circular_buffer.hpp>\r
  45 #include <boost/foreach.hpp>\r
  46 #include <boost/thread.hpp>\r
  47 #include <boost/property_tree/ptree.hpp>\r
  48 \r
  49 #include <tbb/atomic.h>\r
  50 #include <tbb/concurrent_queue.h>\r
  51 \r
  52 #include <boost/assign.hpp>\r
  53 \r
  54 #include <algorithm>\r
  55 #include <vector>\r
  56 \r
  57 #if defined(_MSC_VER)\r
  58 #pragma warning (push)\r
  59 #pragma warning (disable : 4244)\r
  60 #endif\r
  61 extern "C" \r
  62 {\r
  63         #define __STDC_CONSTANT_MACROS\r
  64         #define __STDC_LIMIT_MACROS\r
  65         #include <libavcodec/avcodec.h>\r
  66         #include <libavutil/imgutils.h>\r
  67 }\r
  68 #if defined(_MSC_VER)\r
  69 #pragma warning (pop)\r
  70 #endif\r
  71 \r
  72 typedef int (*PFNWGLEXTGETSWAPINTERVALPROC) (void);\r
  73  \r
  74 namespace caspar { namespace ogl {\r
  75                 \r
  76 enum stretch\r
  77 {\r
  78         none,\r
  79         uniform,\r
  80         fill,\r
  81         uniform_to_fill\r
  82 };\r
  83 \r
  84 struct configuration\r
  85 {\r
  86         enum aspect_ratio\r
  87         {\r
  88                 aspect_4_3 = 0,\r
  89                 aspect_16_9,\r
  90                 aspect_invalid,\r
  91         };\r
  92                 \r
  93         std::wstring    name;\r
  94         size_t                  screen_index;\r
  95         stretch                 stretch;\r
  96         bool                    windowed;\r
  97         bool                    auto_deinterlace;\r
  98         bool                    key_only;\r
  99         aspect_ratio    aspect; \r
 100         bool                    vsync;\r
 101 \r
 102         configuration()\r
 103                 : name(L"ogl")\r
 104                 , screen_index(0)\r
 105                 , stretch(fill)\r
 106                 , windowed(true)\r
 107                 , auto_deinterlace(true)\r
 108                 , key_only(false)\r
 109                 , aspect(aspect_invalid)\r
 110                 , vsync(false)\r
 111         {\r
 112         }\r
 113 };\r
 114 \r
 115 struct ogl_consumer : boost::noncopyable\r
 116 {               \r
 117         const configuration             config_;\r
 118         core::video_format_desc format_desc_;\r
 119         int                                             channel_index_;\r
 120 \r
 121         GLuint                                  texture_;\r
 122         std::vector<GLuint>             pbos_;\r
 123                         \r
 124         float                                   width_;\r
 125         float                                   height_;        \r
 126         unsigned int                    screen_x_;\r
 127         unsigned int                    screen_y_;\r
 128         unsigned int                    screen_width_;\r
 129         unsigned int                    screen_height_;\r
 130         size_t                                  square_width_;\r
 131         size_t                                  square_height_;                         \r
 132         \r
 133         sf::Window                              window_;\r
 134         \r
 135         safe_ptr<diagnostics::graph>    graph_;\r
 136         boost::timer                                    perf_timer_;\r
 137         boost::timer                                    tick_timer_;\r
 138 \r
 139         caspar::high_prec_timer wait_timer_;\r
 140 \r
 141         tbb::concurrent_bounded_queue<safe_ptr<core::read_frame>>       frame_buffer_;\r
 142 \r
 143         boost::thread                   thread_;\r
 144         tbb::atomic<bool>               is_running_;\r
 145         \r
 146         ffmpeg::filter                  filter_;\r
 147 public:\r
 148         ogl_consumer(const configuration& config, const core::video_format_desc& format_desc, int channel_index) \r
 149                 : config_(config)\r
 150                 , format_desc_(format_desc)\r
 151                 , channel_index_(channel_index)\r
 152                 , texture_(0)\r
 153                 , pbos_(2, 0)   \r
 154                 , screen_width_(format_desc.width)\r
 155                 , screen_height_(format_desc.height)\r
 156                 , square_width_(format_desc.square_width)\r
 157                 , square_height_(format_desc.square_height)\r
 158                 , filter_(format_desc.field_mode == core::field_mode::progressive || !config.auto_deinterlace ? L"" : L"YADIF=1:-1", boost::assign::list_of(PIX_FMT_BGRA))\r
 159         {               \r
 160                 if(format_desc_.format == core::video_format::ntsc && config_.aspect == configuration::aspect_4_3)\r
 161                 {\r
 162                         // Use default values which are 4:3.\r
 163                 }\r
 164                 else\r
 165                 {\r
 166                         if(config_.aspect == configuration::aspect_16_9)\r
 167                                 square_width_ = (format_desc.height*16)/9;\r
 168                         else if(config_.aspect == configuration::aspect_4_3)\r
 169                                 square_width_ = (format_desc.height*4)/3;\r
 170                 }\r
 171 \r
 172                 frame_buffer_.set_capacity(2);\r
 173                 \r
 174                 graph_->set_color("tick-time", diagnostics::color(0.0f, 0.6f, 0.9f));   \r
 175                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 176                 graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));\r
 177 \r
 178                 graph_->set_text(print());\r
 179                 diagnostics::register_graph(graph_);\r
 180                                                                         \r
 181                 DISPLAY_DEVICE d_device = {sizeof(d_device), 0};                        \r
 182                 std::vector<DISPLAY_DEVICE> displayDevices;\r
 183                 for(int n = 0; EnumDisplayDevices(NULL, n, &d_device, NULL); ++n)\r
 184                         displayDevices.push_back(d_device);\r
 185 \r
 186                 if(config_.screen_index >= displayDevices.size())\r
 187                         CASPAR_LOG(warning) << print() << L" Invalid screen-index: " << config_.screen_index;\r
 188                 \r
 189                 DEVMODE devmode = {};\r
 190                 if(!EnumDisplaySettings(displayDevices[config_.screen_index].DeviceName, ENUM_CURRENT_SETTINGS, &devmode))\r
 191                         CASPAR_LOG(warning) << print() << L" Could not find display settings for screen-index: " << config_.screen_index;\r
 192                 \r
 193                 screen_x_               = devmode.dmPosition.x;\r
 194                 screen_y_               = devmode.dmPosition.y;\r
 195                 screen_width_   = config_.windowed ? square_width_ : devmode.dmPelsWidth;\r
 196                 screen_height_  = config_.windowed ? square_height_ : devmode.dmPelsHeight;\r
 197 \r
 198                 is_running_ = true;\r
 199                 thread_ = boost::thread([this]{run();});\r
 200         }\r
 201         \r
 202         ~ogl_consumer()\r
 203         {\r
 204                 is_running_ = false;\r
 205                 frame_buffer_.try_push(make_safe<core::read_frame>());\r
 206                 thread_.join();\r
 207         }\r
 208 \r
 209         void init()\r
 210         {\r
 211                 if(!GLEW_VERSION_2_1)\r
 212                         BOOST_THROW_EXCEPTION(not_supported() << msg_info("Missing OpenGL 2.1 support."));\r
 213 \r
 214                 window_.Create(sf::VideoMode(screen_width_, screen_height_, 32), narrow(print()), config_.windowed ? sf::Style::Resize | sf::Style::Close : sf::Style::Fullscreen);\r
 215                 window_.ShowMouseCursor(false);\r
 216                 window_.SetPosition(screen_x_, screen_y_);\r
 217                 window_.SetSize(screen_width_, screen_height_);\r
 218                 window_.SetActive();\r
 219                 GL(glEnable(GL_TEXTURE_2D));\r
 220                 GL(glDisable(GL_DEPTH_TEST));           \r
 221                 GL(glClearColor(0.0, 0.0, 0.0, 0.0));\r
 222                 GL(glViewport(0, 0, format_desc_.width, format_desc_.height));\r
 223                 GL(glLoadIdentity());\r
 224                                 \r
 225                 calculate_aspect();\r
 226                         \r
 227                 GL(glGenTextures(1, &texture_));\r
 228                 GL(glBindTexture(GL_TEXTURE_2D, texture_));\r
 229                 GL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));\r
 230                 GL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));\r
 231                 GL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP));\r
 232                 GL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP));\r
 233                 GL(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, format_desc_.width, format_desc_.height, 0, GL_BGRA, GL_UNSIGNED_BYTE, 0));\r
 234                 GL(glBindTexture(GL_TEXTURE_2D, 0));\r
 235                                         \r
 236                 GL(glGenBuffers(2, pbos_.data()));\r
 237                         \r
 238                 glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbos_[0]);\r
 239                 glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, format_desc_.size, 0, GL_STREAM_DRAW_ARB);\r
 240                 glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbos_[1]);\r
 241                 glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, format_desc_.size, 0, GL_STREAM_DRAW_ARB);\r
 242                 glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);\r
 243                                 \r
 244                 if(config_.vsync)\r
 245                 {\r
 246                         auto wglSwapIntervalEXT = reinterpret_cast<void(APIENTRY*)(int)>(wglGetProcAddress("wglSwapIntervalEXT"));\r
 247                         if(wglSwapIntervalEXT)\r
 248                         {\r
 249                                 wglSwapIntervalEXT(1);\r
 250                                 CASPAR_LOG(info) << print() << " Successfully enabled vsync.";\r
 251                         }\r
 252                         else\r
 253                                 CASPAR_LOG(info) << print() << " Failed to enable vsync.";\r
 254                 }\r
 255 \r
 256                 CASPAR_LOG(info) << print() << " Successfully Initialized.";\r
 257         }\r
 258 \r
 259         void uninit()\r
 260         {               \r
 261                 if(texture_)\r
 262                         glDeleteTextures(1, &texture_);\r
 263 \r
 264                 BOOST_FOREACH(auto& pbo, pbos_)\r
 265                 {\r
 266                         if(pbo)\r
 267                                 glDeleteBuffers(1, &pbo);\r
 268                 }\r
 269         }\r
 270 \r
 271         void run()\r
 272         {\r
 273                 try\r
 274                 {\r
 275                         init();\r
 276 \r
 277                         while(is_running_)\r
 278                         {                       \r
 279                                 try\r
 280                                 {\r
 281 \r
 282                                         sf::Event e;            \r
 283                                         while(window_.GetEvent(e))\r
 284                                         {\r
 285                                                 if(e.Type == sf::Event::Resized)\r
 286                                                         calculate_aspect();\r
 287                                                 else if(e.Type == sf::Event::Closed)\r
 288                                                         is_running_ = false;\r
 289                                         }\r
 290                         \r
 291                                         safe_ptr<core::read_frame> frame;\r
 292 \r
 293                                         frame_buffer_.pop(frame);\r
 294 \r
 295                                         render_and_draw_frame(frame);\r
 296                                         \r
 297                                         graph_->set_value("tick-time", tick_timer_.elapsed()*format_desc_.fps*0.5);     \r
 298                                         tick_timer_.restart();\r
 299                                 }\r
 300                                 catch(...)\r
 301                                 {\r
 302                                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 303                                         is_running_ = false;\r
 304                                 }\r
 305                         }\r
 306 \r
 307                         uninit();\r
 308                 }\r
 309                 catch(...)\r
 310                 {\r
 311                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 312                 }\r
 313         }\r
 314 \r
 315         void try_sleep_almost_until_vblank()\r
 316         {\r
 317                 static const double THRESHOLD = 0.003;\r
 318                 double threshold = config_.vsync ? THRESHOLD : 0.0;\r
 319 \r
 320                 auto frame_time = 1.0 / (format_desc_.fps * format_desc_.field_count);\r
 321 \r
 322                 wait_timer_.tick(frame_time - threshold);\r
 323         }\r
 324 \r
 325         void wait_for_vblank_and_display()\r
 326         {\r
 327                 try_sleep_almost_until_vblank();\r
 328                 window_.Display();\r
 329                 // Make sure that the next tick measures the duration from this point in time.\r
 330                 wait_timer_.tick(0.0);\r
 331         }\r
 332         \r
 333         safe_ptr<AVFrame> get_av_frame()\r
 334         {               \r
 335                 safe_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);     \r
 336                 avcodec_get_frame_defaults(av_frame.get());\r
 337                                                 \r
 338                 av_frame->linesize[0]           = format_desc_.width*4;                 \r
 339                 av_frame->format                        = PIX_FMT_BGRA;\r
 340                 av_frame->width                         = format_desc_.width;\r
 341                 av_frame->height                        = format_desc_.height;\r
 342                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;\r
 343                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper ? 1 : 0;\r
 344 \r
 345                 return av_frame;\r
 346         }\r
 347 \r
 348         void render_and_draw_frame(const safe_ptr<core::read_frame>& frame)\r
 349         {\r
 350                 if(static_cast<size_t>(frame->image_data().size()) != format_desc_.size)\r
 351                         return;\r
 352                                         \r
 353                 perf_timer_.restart();\r
 354                 auto av_frame = get_av_frame();\r
 355                 av_frame->data[0] = const_cast<uint8_t*>(frame->image_data().begin());\r
 356 \r
 357                 filter_.push(av_frame);\r
 358                 auto frames = filter_.poll_all();\r
 359 \r
 360                 if (frames.empty())\r
 361                         return;\r
 362 \r
 363                 if (frames.size() == 1)\r
 364                 {\r
 365                         render(frames[0], frame->image_data().size());\r
 366                         graph_->set_value("frame-time", perf_timer_.elapsed() * format_desc_.fps * 0.5);\r
 367 \r
 368                         wait_for_vblank_and_display(); // progressive frame\r
 369                 }\r
 370                 else if (frames.size() == 2)\r
 371                 {\r
 372                         render(frames[0], frame->image_data().size());\r
 373                         double perf_elapsed = perf_timer_.elapsed();\r
 374 \r
 375                         wait_for_vblank_and_display(); // field1\r
 376 \r
 377                         perf_timer_.restart();\r
 378                         render(frames[1], frame->image_data().size());\r
 379                         perf_elapsed += perf_timer_.elapsed();\r
 380                         graph_->set_value("frame-time", perf_elapsed * format_desc_.fps * 0.5);\r
 381 \r
 382                         wait_for_vblank_and_display(); // field2\r
 383                 }\r
 384         }\r
 385 \r
 386         void render(safe_ptr<AVFrame> av_frame, int image_data_size)\r
 387         {\r
 388                 if(av_frame->linesize[0] != static_cast<int>(format_desc_.width*4))\r
 389                 {\r
 390                         const uint8_t *src_data[4] = {0};\r
 391                         memcpy(const_cast<uint8_t**>(&src_data[0]), av_frame->data, 4);\r
 392                         const int src_linesizes[4] = {0};\r
 393                         memcpy(const_cast<int*>(&src_linesizes[0]), av_frame->linesize, 4);\r
 394 \r
 395                         auto av_frame2 = get_av_frame();\r
 396                         av_image_alloc(av_frame2->data, av_frame2->linesize, av_frame2->width, av_frame2->height, PIX_FMT_BGRA, 16);\r
 397                         av_frame = safe_ptr<AVFrame>(av_frame2.get(), [=](AVFrame*)\r
 398                         {\r
 399                                 av_freep(&av_frame2->data[0]);\r
 400                         });\r
 401 \r
 402                         av_image_copy(av_frame2->data, av_frame2->linesize, src_data, src_linesizes, PIX_FMT_BGRA, av_frame2->width, av_frame2->height);\r
 403                 }\r
 404 \r
 405                 glBindTexture(GL_TEXTURE_2D, texture_);\r
 406 \r
 407                 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbos_[0]);\r
 408                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, format_desc_.width, format_desc_.height, GL_BGRA, GL_UNSIGNED_BYTE, 0);\r
 409 \r
 410                 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbos_[1]);\r
 411                 glBufferData(GL_PIXEL_UNPACK_BUFFER, format_desc_.size, 0, GL_STREAM_DRAW);\r
 412 \r
 413                 auto ptr = glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY);\r
 414                 if(ptr)\r
 415                 {\r
 416                         if(config_.key_only)\r
 417                                 fast_memshfl(reinterpret_cast<char*>(ptr), av_frame->data[0], image_data_size, 0x0F0F0F0F, 0x0B0B0B0B, 0x07070707, 0x03030303);\r
 418                         else\r
 419                                 fast_memcpy(reinterpret_cast<char*>(ptr), av_frame->data[0], image_data_size);\r
 420 \r
 421                         glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER); // release the mapped buffer\r
 422                 }\r
 423 \r
 424                 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);\r
 425                                 \r
 426                 GL(glClear(GL_COLOR_BUFFER_BIT));                       \r
 427                 glBegin(GL_QUADS);\r
 428                                 glTexCoord2f(0.0f,        1.0f);        glVertex2f(-width_, -height_);\r
 429                                 glTexCoord2f(1.0f,        1.0f);        glVertex2f( width_, -height_);\r
 430                                 glTexCoord2f(1.0f,        0.0f);        glVertex2f( width_,  height_);\r
 431                                 glTexCoord2f(0.0f,        0.0f);        glVertex2f(-width_,  height_);\r
 432                 glEnd();\r
 433                 \r
 434                 glBindTexture(GL_TEXTURE_2D, 0);\r
 435 \r
 436                 std::rotate(pbos_.begin(), pbos_.begin() + 1, pbos_.end());\r
 437         }\r
 438 \r
 439         boost::unique_future<bool> send(const safe_ptr<core::read_frame>& frame)\r
 440         {\r
 441                 if (!frame_buffer_.try_push(frame))\r
 442                         graph_->set_tag("dropped-frame"); \r
 443 \r
 444                 return wrap_as_future(is_running_.load());\r
 445         }\r
 446                 \r
 447         std::wstring print() const\r
 448         {       \r
 449                 return config_.name + L"[" + boost::lexical_cast<std::wstring>(channel_index_) + L"|" + format_desc_.name + L"]";\r
 450         }\r
 451         \r
 452         void calculate_aspect()\r
 453         {\r
 454                 if(config_.windowed)\r
 455                 {\r
 456                         screen_height_ = window_.GetHeight();\r
 457                         screen_width_ = window_.GetWidth();\r
 458                 }\r
 459                 \r
 460                 GL(glViewport(0, 0, screen_width_, screen_height_));\r
 461 \r
 462                 std::pair<float, float> target_ratio = None();\r
 463                 if(config_.stretch == fill)\r
 464                         target_ratio = Fill();\r
 465                 else if(config_.stretch == uniform)\r
 466                         target_ratio = Uniform();\r
 467                 else if(config_.stretch == uniform_to_fill)\r
 468                         target_ratio = UniformToFill();\r
 469 \r
 470                 width_ = target_ratio.first;\r
 471                 height_ = target_ratio.second;\r
 472         }\r
 473                 \r
 474         std::pair<float, float> None()\r
 475         {\r
 476                 float width = static_cast<float>(square_width_)/static_cast<float>(screen_width_);\r
 477                 float height = static_cast<float>(square_height_)/static_cast<float>(screen_height_);\r
 478 \r
 479                 return std::make_pair(width, height);\r
 480         }\r
 481 \r
 482         std::pair<float, float> Uniform()\r
 483         {\r
 484                 float aspect = static_cast<float>(square_width_)/static_cast<float>(square_height_);\r
 485                 float width = std::min(1.0f, static_cast<float>(screen_height_)*aspect/static_cast<float>(screen_width_));\r
 486                 float height = static_cast<float>(screen_width_*width)/static_cast<float>(screen_height_*aspect);\r
 487 \r
 488                 return std::make_pair(width, height);\r
 489         }\r
 490 \r
 491         std::pair<float, float> Fill()\r
 492         {\r
 493                 return std::make_pair(1.0f, 1.0f);\r
 494         }\r
 495 \r
 496         std::pair<float, float> UniformToFill()\r
 497         {\r
 498                 float wr = static_cast<float>(square_width_)/static_cast<float>(screen_width_);\r
 499                 float hr = static_cast<float>(square_height_)/static_cast<float>(screen_height_);\r
 500                 float r_inv = 1.0f/std::min(wr, hr);\r
 501 \r
 502                 float width = wr*r_inv;\r
 503                 float height = hr*r_inv;\r
 504 \r
 505                 return std::make_pair(width, height);\r
 506         }\r
 507 };\r
 508 \r
 509 \r
 510 struct ogl_consumer_proxy : public core::frame_consumer\r
 511 {\r
 512         const configuration config_;\r
 513         std::unique_ptr<ogl_consumer> consumer_;\r
 514 \r
 515 public:\r
 516 \r
 517         ogl_consumer_proxy(const configuration& config)\r
 518                 : config_(config){}\r
 519         \r
 520         ~ogl_consumer_proxy()\r
 521         {\r
 522                 if(consumer_)\r
 523                 {\r
 524                         auto str = print();\r
 525                         consumer_.reset();\r
 526                         CASPAR_LOG(info) << str << L" Successfully Uninitialized.";     \r
 527                 }\r
 528         }\r
 529 \r
 530         // frame_consumer\r
 531 \r
 532         virtual void initialize(const core::video_format_desc& format_desc, int channel_index) override\r
 533         {\r
 534                 consumer_.reset();\r
 535                 consumer_.reset(new ogl_consumer(config_, format_desc, channel_index));\r
 536                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";   \r
 537         }\r
 538         \r
 539         virtual boost::unique_future<bool> send(const safe_ptr<core::read_frame>& frame) override\r
 540         {\r
 541                 return consumer_->send(frame);\r
 542         }\r
 543         \r
 544         virtual std::wstring print() const override\r
 545         {\r
 546                 return consumer_ ? consumer_->print() : L"[ogl_consumer]";\r
 547         }\r
 548 \r
 549         virtual boost::property_tree::wptree info() const override\r
 550         {\r
 551                 boost::property_tree::wptree info;\r
 552                 info.add(L"type", L"ogl-consumer");\r
 553                 info.add(L"key-only", config_.key_only);\r
 554                 info.add(L"windowed", config_.windowed);\r
 555                 info.add(L"auto-deinterlace", config_.auto_deinterlace);\r
 556                 return info;\r
 557         }\r
 558 \r
 559         virtual bool has_synchronization_clock() const override\r
 560         {\r
 561                 return false;\r
 562         }\r
 563         \r
 564         virtual size_t buffer_depth() const override\r
 565         {\r
 566                 return 1;\r
 567         }\r
 568 \r
 569         virtual int index() const override\r
 570         {\r
 571                 return 600 + config_.screen_index;\r
 572         }\r
 573 };      \r
 574 \r
 575 safe_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
 576 {\r
 577         if(params.size() < 1 || params[0] != L"SCREEN")\r
 578                 return core::frame_consumer::empty();\r
 579         \r
 580         configuration config;\r
 581                 \r
 582         if(params.size() > 1)\r
 583                 config.screen_index = lexical_cast_or_default<int>(params[1], config.screen_index);\r
 584 \r
 585         auto device_it = std::find(params.begin(), params.end(), L"DEVICE");\r
 586         if(device_it != params.end() && ++device_it != params.end())\r
 587                 config.screen_index = boost::lexical_cast<int>(*device_it);\r
 588                 \r
 589         config.windowed = std::find(params.begin(), params.end(), L"FULLSCREEN") == params.end();\r
 590         config.key_only = std::find(params.begin(), params.end(), L"KEY_ONLY") != params.end();\r
 591 \r
 592         auto name_it    = std::find(params.begin(), params.end(), L"NAME");\r
 593         if(name_it != params.end() && ++name_it != params.end())\r
 594                 config.name = *name_it;\r
 595 \r
 596         return make_safe<ogl_consumer_proxy>(config);\r
 597 }\r
 598 \r
 599 safe_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree) \r
 600 {\r
 601         configuration config;\r
 602         config.name                             = ptree.get(L"name",     config.name);\r
 603         config.screen_index             = ptree.get(L"device",   config.screen_index+1)-1;\r
 604         config.windowed                 = ptree.get(L"windowed", config.windowed);\r
 605         config.key_only                 = ptree.get(L"key-only", config.key_only);\r
 606         config.auto_deinterlace = ptree.get(L"auto-deinterlace", config.auto_deinterlace);\r
 607         config.vsync                    = ptree.get(L"vsync", config.vsync);\r
 608 \r
 609         auto stretch_str = ptree.get(L"stretch", L"default");\r
 610         if(stretch_str == L"uniform")\r
 611                 config.stretch = stretch::uniform;\r
 612         else if(stretch_str == L"uniform_to_fill")\r
 613                 config.stretch = stretch::uniform_to_fill;\r
 614 \r
 615         auto aspect_str = ptree.get(L"aspect-ratio", L"default");\r
 616         if(aspect_str == L"16:9")\r
 617                 config.aspect = configuration::aspect_16_9;\r
 618         else if(aspect_str == L"4:3")\r
 619                 config.aspect = configuration::aspect_4_3;\r
 620         \r
 621         return make_safe<ogl_consumer_proxy>(config);\r
 622 }\r
 623 \r
 624 }}