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

   1 /*\r
   2 * Copyright 2013 Sveriges Television AB http://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/parameters/parameters.h>\r
  40 #include <core/video_format.h>\r
  41 #include <core/mixer/read_frame.h>\r
  42 #include <core/consumer/frame_consumer.h>\r
  43 \r
  44 #include <boost/timer.hpp>\r
  45 #include <boost/circular_buffer.hpp>\r
  46 #include <boost/foreach.hpp>\r
  47 #include <boost/thread.hpp>\r
  48 #include <boost/property_tree/ptree.hpp>\r
  49 \r
  50 #include <tbb/atomic.h>\r
  51 #include <tbb/concurrent_queue.h>\r
  52 \r
  53 #include <boost/assign.hpp>\r
  54 \r
  55 #include <algorithm>\r
  56 #include <vector>\r
  57 \r
  58 #if defined(_MSC_VER)\r
  59 #pragma warning (push)\r
  60 #pragma warning (disable : 4244)\r
  61 #endif\r
  62 extern "C" \r
  63 {\r
  64         #define __STDC_CONSTANT_MACROS\r
  65         #define __STDC_LIMIT_MACROS\r
  66         #include <libavcodec/avcodec.h>\r
  67         #include <libavutil/imgutils.h>\r
  68 }\r
  69 #if defined(_MSC_VER)\r
  70 #pragma warning (pop)\r
  71 #endif\r
  72 \r
  73 typedef int (*PFNWGLEXTGETSWAPINTERVALPROC) (void);\r
  74  \r
  75 namespace caspar { namespace ogl {\r
  76                 \r
  77 enum stretch\r
  78 {\r
  79         none,\r
  80         uniform,\r
  81         fill,\r
  82         uniform_to_fill\r
  83 };\r
  84 \r
  85 struct configuration\r
  86 {\r
  87         enum aspect_ratio\r
  88         {\r
  89                 aspect_4_3 = 0,\r
  90                 aspect_16_9,\r
  91                 aspect_invalid,\r
  92         };\r
  93                 \r
  94         std::wstring    name;\r
  95         size_t                  screen_index;\r
  96         stretch                 stretch;\r
  97         bool                    windowed;\r
  98         bool                    auto_deinterlace;\r
  99         bool                    key_only;\r
 100         aspect_ratio    aspect; \r
 101         bool                    vsync;\r
 102 \r
 103         configuration()\r
 104                 : name(L"ogl")\r
 105                 , screen_index(0)\r
 106                 , stretch(fill)\r
 107                 , windowed(true)\r
 108                 , auto_deinterlace(true)\r
 109                 , key_only(false)\r
 110                 , aspect(aspect_invalid)\r
 111                 , vsync(false)\r
 112         {\r
 113         }\r
 114 };\r
 115 \r
 116 struct ogl_consumer : boost::noncopyable\r
 117 {               \r
 118         const configuration             config_;\r
 119         core::video_format_desc format_desc_;\r
 120         int                                             channel_index_;\r
 121 \r
 122         GLuint                                  texture_;\r
 123         std::vector<GLuint>             pbos_;\r
 124                         \r
 125         float                                   width_;\r
 126         float                                   height_;        \r
 127         unsigned int                    screen_x_;\r
 128         unsigned int                    screen_y_;\r
 129         unsigned int                    screen_width_;\r
 130         unsigned int                    screen_height_;\r
 131         size_t                                  square_width_;\r
 132         size_t                                  square_height_;                         \r
 133         \r
 134         sf::Window                              window_;\r
 135         \r
 136         safe_ptr<diagnostics::graph>    graph_;\r
 137         boost::timer                                    perf_timer_;\r
 138         boost::timer                                    tick_timer_;\r
 139 \r
 140         caspar::high_prec_timer wait_timer_;\r
 141 \r
 142         tbb::concurrent_bounded_queue<safe_ptr<core::read_frame>>       frame_buffer_;\r
 143 \r
 144         boost::thread                   thread_;\r
 145         tbb::atomic<bool>               is_running_;\r
 146         tbb::atomic<int64_t>    current_presentation_age_;\r
 147         \r
 148         ffmpeg::filter                  filter_;\r
 149 public:\r
 150         ogl_consumer(const configuration& config, const core::video_format_desc& format_desc, int channel_index) \r
 151                 : config_(config)\r
 152                 , format_desc_(format_desc)\r
 153                 , channel_index_(channel_index)\r
 154                 , texture_(0)\r
 155                 , pbos_(2, 0)   \r
 156                 , screen_width_(format_desc.width)\r
 157                 , screen_height_(format_desc.height)\r
 158                 , square_width_(format_desc.square_width)\r
 159                 , square_height_(format_desc.square_height)\r
 160                 , 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
 161         {               \r
 162                 if(format_desc_.format == core::video_format::ntsc && config_.aspect == configuration::aspect_4_3)\r
 163                 {\r
 164                         // Use default values which are 4:3.\r
 165                 }\r
 166                 else\r
 167                 {\r
 168                         if(config_.aspect == configuration::aspect_16_9)\r
 169                                 square_width_ = (format_desc.height*16)/9;\r
 170                         else if(config_.aspect == configuration::aspect_4_3)\r
 171                                 square_width_ = (format_desc.height*4)/3;\r
 172                 }\r
 173 \r
 174                 frame_buffer_.set_capacity(2);\r
 175                 \r
 176                 graph_->set_color("tick-time", diagnostics::color(0.0f, 0.6f, 0.9f));   \r
 177                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 178                 graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));\r
 179 \r
 180                 graph_->set_text(print());\r
 181                 diagnostics::register_graph(graph_);\r
 182                                                                         \r
 183                 DISPLAY_DEVICE d_device = {sizeof(d_device), 0};                        \r
 184                 std::vector<DISPLAY_DEVICE> displayDevices;\r
 185                 for(int n = 0; EnumDisplayDevices(NULL, n, &d_device, NULL); ++n)\r
 186                         displayDevices.push_back(d_device);\r
 187 \r
 188                 if(config_.screen_index >= displayDevices.size())\r
 189                         CASPAR_LOG(warning) << print() << L" Invalid screen-index: " << config_.screen_index;\r
 190                 \r
 191                 DEVMODE devmode = {};\r
 192                 if(!EnumDisplaySettings(displayDevices[config_.screen_index].DeviceName, ENUM_CURRENT_SETTINGS, &devmode))\r
 193                         CASPAR_LOG(warning) << print() << L" Could not find display settings for screen-index: " << config_.screen_index;\r
 194                 \r
 195                 screen_x_               = devmode.dmPosition.x;\r
 196                 screen_y_               = devmode.dmPosition.y;\r
 197                 screen_width_   = config_.windowed ? square_width_ : devmode.dmPelsWidth;\r
 198                 screen_height_  = config_.windowed ? square_height_ : devmode.dmPelsHeight;\r
 199 \r
 200                 is_running_ = true;\r
 201                 current_presentation_age_ = 0;\r
 202                 thread_ = boost::thread([this]{run();});\r
 203         }\r
 204         \r
 205         ~ogl_consumer()\r
 206         {\r
 207                 is_running_ = false;\r
 208                 frame_buffer_.try_push(make_safe<core::read_frame>());\r
 209                 thread_.join();\r
 210         }\r
 211 \r
 212         void init()\r
 213         {\r
 214                 if(!GLEW_VERSION_2_1)\r
 215                         BOOST_THROW_EXCEPTION(not_supported() << msg_info("Missing OpenGL 2.1 support."));\r
 216 \r
 217                 window_.Create(sf::VideoMode(screen_width_, screen_height_, 32), narrow(L"Screen consumer " + channel_and_format()), config_.windowed ? sf::Style::Resize | sf::Style::Close : sf::Style::Fullscreen);\r
 218                 window_.ShowMouseCursor(false);\r
 219                 window_.SetPosition(screen_x_, screen_y_);\r
 220                 window_.SetSize(screen_width_, screen_height_);\r
 221                 window_.SetActive();\r
 222                 GL(glEnable(GL_TEXTURE_2D));\r
 223                 GL(glDisable(GL_DEPTH_TEST));           \r
 224                 GL(glClearColor(0.0, 0.0, 0.0, 0.0));\r
 225                 GL(glViewport(0, 0, format_desc_.width, format_desc_.height));\r
 226                 GL(glLoadIdentity());\r
 227                                 \r
 228                 calculate_aspect();\r
 229                         \r
 230                 GL(glGenTextures(1, &texture_));\r
 231                 GL(glBindTexture(GL_TEXTURE_2D, texture_));\r
 232                 GL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));\r
 233                 GL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));\r
 234                 GL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP));\r
 235                 GL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP));\r
 236                 GL(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, format_desc_.width, format_desc_.height, 0, GL_BGRA, GL_UNSIGNED_BYTE, 0));\r
 237                 GL(glBindTexture(GL_TEXTURE_2D, 0));\r
 238                                         \r
 239                 GL(glGenBuffers(2, pbos_.data()));\r
 240                         \r
 241                 glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbos_[0]);\r
 242                 glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, format_desc_.size, 0, GL_STREAM_DRAW_ARB);\r
 243                 glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, pbos_[1]);\r
 244                 glBufferDataARB(GL_PIXEL_UNPACK_BUFFER_ARB, format_desc_.size, 0, GL_STREAM_DRAW_ARB);\r
 245                 glBindBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, 0);\r
 246                                 \r
 247                 if(config_.vsync)\r
 248                 {\r
 249                         auto wglSwapIntervalEXT = reinterpret_cast<void(APIENTRY*)(int)>(wglGetProcAddress("wglSwapIntervalEXT"));\r
 250                         if(wglSwapIntervalEXT)\r
 251                         {\r
 252                                 wglSwapIntervalEXT(1);\r
 253                                 CASPAR_LOG(info) << print() << " Successfully enabled vsync.";\r
 254                         }\r
 255                         else\r
 256                                 CASPAR_LOG(info) << print() << " Failed to enable vsync.";\r
 257                 }\r
 258 \r
 259                 CASPAR_LOG(info) << print() << " Successfully Initialized.";\r
 260         }\r
 261 \r
 262         void uninit()\r
 263         {               \r
 264                 if(texture_)\r
 265                         glDeleteTextures(1, &texture_);\r
 266 \r
 267                 BOOST_FOREACH(auto& pbo, pbos_)\r
 268                 {\r
 269                         if(pbo)\r
 270                                 glDeleteBuffers(1, &pbo);\r
 271                 }\r
 272         }\r
 273 \r
 274         void run()\r
 275         {\r
 276                 try\r
 277                 {\r
 278                         init();\r
 279 \r
 280                         while(is_running_)\r
 281                         {                       \r
 282                                 try\r
 283                                 {\r
 284 \r
 285                                         sf::Event e;            \r
 286                                         while(window_.GetEvent(e))\r
 287                                         {\r
 288                                                 if(e.Type == sf::Event::Resized)\r
 289                                                         calculate_aspect();\r
 290                                                 else if(e.Type == sf::Event::Closed)\r
 291                                                         is_running_ = false;\r
 292                                         }\r
 293                         \r
 294                                         safe_ptr<core::read_frame> frame;\r
 295 \r
 296                                         frame_buffer_.pop(frame);\r
 297 \r
 298                                         render_and_draw_frame(frame);\r
 299                                         \r
 300                                         graph_->set_value("tick-time", tick_timer_.elapsed()*format_desc_.fps*0.5);     \r
 301                                         tick_timer_.restart();\r
 302                                 }\r
 303                                 catch(...)\r
 304                                 {\r
 305                                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 306                                         is_running_ = false;\r
 307                                 }\r
 308                         }\r
 309 \r
 310                         uninit();\r
 311                 }\r
 312                 catch(...)\r
 313                 {\r
 314                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 315                 }\r
 316         }\r
 317 \r
 318         void try_sleep_almost_until_vblank()\r
 319         {\r
 320                 static const double THRESHOLD = 0.003;\r
 321                 double threshold = config_.vsync ? THRESHOLD : 0.0;\r
 322 \r
 323                 auto frame_time = 1.0 / (format_desc_.fps * format_desc_.field_count);\r
 324 \r
 325                 wait_timer_.tick(frame_time - threshold);\r
 326         }\r
 327 \r
 328         void wait_for_vblank_and_display()\r
 329         {\r
 330                 try_sleep_almost_until_vblank();\r
 331                 window_.Display();\r
 332                 // Make sure that the next tick measures the duration from this point in time.\r
 333                 wait_timer_.tick(0.0);\r
 334         }\r
 335         \r
 336         safe_ptr<AVFrame> get_av_frame()\r
 337         {               \r
 338                 safe_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);     \r
 339                 avcodec_get_frame_defaults(av_frame.get());\r
 340                                                 \r
 341                 av_frame->linesize[0]           = format_desc_.width*4;                 \r
 342                 av_frame->format                        = PIX_FMT_BGRA;\r
 343                 av_frame->width                         = format_desc_.width;\r
 344                 av_frame->height                        = format_desc_.height;\r
 345                 av_frame->interlaced_frame      = format_desc_.field_mode != core::field_mode::progressive;\r
 346                 av_frame->top_field_first       = format_desc_.field_mode == core::field_mode::upper ? 1 : 0;\r
 347 \r
 348                 return av_frame;\r
 349         }\r
 350 \r
 351         void render_and_draw_frame(const safe_ptr<core::read_frame>& frame)\r
 352         {\r
 353                 if(static_cast<size_t>(frame->image_data().size()) != format_desc_.size)\r
 354                         return;\r
 355                                         \r
 356                 perf_timer_.restart();\r
 357                 auto av_frame = get_av_frame();\r
 358                 av_frame->data[0] = const_cast<uint8_t*>(frame->image_data().begin());\r
 359 \r
 360                 filter_.push(av_frame);\r
 361                 auto frames = filter_.poll_all();\r
 362 \r
 363                 if (frames.empty())\r
 364                         return;\r
 365 \r
 366                 if (frames.size() == 1)\r
 367                 {\r
 368                         render(frames[0], frame->image_data().size());\r
 369                         graph_->set_value("frame-time", perf_timer_.elapsed() * format_desc_.fps * 0.5);\r
 370 \r
 371                         wait_for_vblank_and_display(); // progressive frame\r
 372                 }\r
 373                 else if (frames.size() == 2)\r
 374                 {\r
 375                         render(frames[0], frame->image_data().size());\r
 376                         double perf_elapsed = perf_timer_.elapsed();\r
 377 \r
 378                         wait_for_vblank_and_display(); // field1\r
 379 \r
 380                         perf_timer_.restart();\r
 381                         render(frames[1], frame->image_data().size());\r
 382                         perf_elapsed += perf_timer_.elapsed();\r
 383                         graph_->set_value("frame-time", perf_elapsed * format_desc_.fps * 0.5);\r
 384 \r
 385                         wait_for_vblank_and_display(); // field2\r
 386                 }\r
 387 \r
 388                 current_presentation_age_ = frame->get_age_millis();\r
 389         }\r
 390 \r
 391         void render(safe_ptr<AVFrame> av_frame, int image_data_size)\r
 392         {\r
 393                 if(av_frame->linesize[0] != static_cast<int>(format_desc_.width*4))\r
 394                 {\r
 395                         const uint8_t *src_data[4] = {0};\r
 396                         memcpy(const_cast<uint8_t**>(&src_data[0]), av_frame->data, 4);\r
 397                         const int src_linesizes[4] = {0};\r
 398                         memcpy(const_cast<int*>(&src_linesizes[0]), av_frame->linesize, 4);\r
 399 \r
 400                         auto av_frame2 = get_av_frame();\r
 401                         av_image_alloc(av_frame2->data, av_frame2->linesize, av_frame2->width, av_frame2->height, PIX_FMT_BGRA, 16);\r
 402                         av_frame = safe_ptr<AVFrame>(av_frame2.get(), [=](AVFrame*)\r
 403                         {\r
 404                                 av_freep(&av_frame2->data[0]);\r
 405                         });\r
 406 \r
 407                         av_image_copy(av_frame2->data, av_frame2->linesize, src_data, src_linesizes, PIX_FMT_BGRA, av_frame2->width, av_frame2->height);\r
 408                 }\r
 409 \r
 410                 glBindTexture(GL_TEXTURE_2D, texture_);\r
 411 \r
 412                 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbos_[0]);\r
 413                 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, format_desc_.width, format_desc_.height, GL_BGRA, GL_UNSIGNED_BYTE, 0);\r
 414 \r
 415                 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbos_[1]);\r
 416                 glBufferData(GL_PIXEL_UNPACK_BUFFER, format_desc_.size, 0, GL_STREAM_DRAW);\r
 417 \r
 418                 auto ptr = glMapBuffer(GL_PIXEL_UNPACK_BUFFER, GL_WRITE_ONLY);\r
 419                 if(ptr)\r
 420                 {\r
 421                         if(config_.key_only)\r
 422                                 fast_memshfl(reinterpret_cast<char*>(ptr), av_frame->data[0], image_data_size, 0x0F0F0F0F, 0x0B0B0B0B, 0x07070707, 0x03030303);\r
 423                         else\r
 424                                 fast_memcpy(reinterpret_cast<char*>(ptr), av_frame->data[0], image_data_size);\r
 425 \r
 426                         glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER); // release the mapped buffer\r
 427                 }\r
 428 \r
 429                 glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);\r
 430                                 \r
 431                 GL(glClear(GL_COLOR_BUFFER_BIT));                       \r
 432                 glBegin(GL_QUADS);\r
 433                                 glTexCoord2f(0.0f,        1.0f);        glVertex2f(-width_, -height_);\r
 434                                 glTexCoord2f(1.0f,        1.0f);        glVertex2f( width_, -height_);\r
 435                                 glTexCoord2f(1.0f,        0.0f);        glVertex2f( width_,  height_);\r
 436                                 glTexCoord2f(0.0f,        0.0f);        glVertex2f(-width_,  height_);\r
 437                 glEnd();\r
 438                 \r
 439                 glBindTexture(GL_TEXTURE_2D, 0);\r
 440 \r
 441                 std::rotate(pbos_.begin(), pbos_.begin() + 1, pbos_.end());\r
 442         }\r
 443 \r
 444         boost::unique_future<bool> send(const safe_ptr<core::read_frame>& frame)\r
 445         {\r
 446                 if (!frame_buffer_.try_push(frame))\r
 447                         graph_->set_tag("dropped-frame"); \r
 448 \r
 449                 return wrap_as_future(is_running_.load());\r
 450         }\r
 451 \r
 452         std::wstring channel_and_format() const\r
 453         {\r
 454                 return L"[" + boost::lexical_cast<std::wstring>(channel_index_) + L"|" + format_desc_.name + L"]";\r
 455         }\r
 456                 \r
 457         std::wstring print() const\r
 458         {       \r
 459                 return config_.name + channel_and_format();\r
 460         }\r
 461         \r
 462         void calculate_aspect()\r
 463         {\r
 464                 if(config_.windowed)\r
 465                 {\r
 466                         screen_height_ = window_.GetHeight();\r
 467                         screen_width_ = window_.GetWidth();\r
 468                 }\r
 469                 \r
 470                 GL(glViewport(0, 0, screen_width_, screen_height_));\r
 471 \r
 472                 std::pair<float, float> target_ratio = None();\r
 473                 if(config_.stretch == fill)\r
 474                         target_ratio = Fill();\r
 475                 else if(config_.stretch == uniform)\r
 476                         target_ratio = Uniform();\r
 477                 else if(config_.stretch == uniform_to_fill)\r
 478                         target_ratio = UniformToFill();\r
 479 \r
 480                 width_ = target_ratio.first;\r
 481                 height_ = target_ratio.second;\r
 482         }\r
 483                 \r
 484         std::pair<float, float> None()\r
 485         {\r
 486                 float width = static_cast<float>(square_width_)/static_cast<float>(screen_width_);\r
 487                 float height = static_cast<float>(square_height_)/static_cast<float>(screen_height_);\r
 488 \r
 489                 return std::make_pair(width, height);\r
 490         }\r
 491 \r
 492         std::pair<float, float> Uniform()\r
 493         {\r
 494                 float aspect = static_cast<float>(square_width_)/static_cast<float>(square_height_);\r
 495                 float width = std::min(1.0f, static_cast<float>(screen_height_)*aspect/static_cast<float>(screen_width_));\r
 496                 float height = static_cast<float>(screen_width_*width)/static_cast<float>(screen_height_*aspect);\r
 497 \r
 498                 return std::make_pair(width, height);\r
 499         }\r
 500 \r
 501         std::pair<float, float> Fill()\r
 502         {\r
 503                 return std::make_pair(1.0f, 1.0f);\r
 504         }\r
 505 \r
 506         std::pair<float, float> UniformToFill()\r
 507         {\r
 508                 float wr = static_cast<float>(square_width_)/static_cast<float>(screen_width_);\r
 509                 float hr = static_cast<float>(square_height_)/static_cast<float>(screen_height_);\r
 510                 float r_inv = 1.0f/std::min(wr, hr);\r
 511 \r
 512                 float width = wr*r_inv;\r
 513                 float height = hr*r_inv;\r
 514 \r
 515                 return std::make_pair(width, height);\r
 516         }\r
 517 };\r
 518 \r
 519 \r
 520 struct ogl_consumer_proxy : public core::frame_consumer\r
 521 {\r
 522         const configuration config_;\r
 523         std::unique_ptr<ogl_consumer> consumer_;\r
 524 \r
 525 public:\r
 526 \r
 527         ogl_consumer_proxy(const configuration& config)\r
 528                 : config_(config){}\r
 529         \r
 530         ~ogl_consumer_proxy()\r
 531         {\r
 532                 if(consumer_)\r
 533                 {\r
 534                         auto str = print();\r
 535                         consumer_.reset();\r
 536                         CASPAR_LOG(info) << str << L" Successfully Uninitialized.";     \r
 537                 }\r
 538         }\r
 539 \r
 540         // frame_consumer\r
 541 \r
 542         virtual void initialize(const core::video_format_desc& format_desc, int channel_index) override\r
 543         {\r
 544                 consumer_.reset();\r
 545                 consumer_.reset(new ogl_consumer(config_, format_desc, channel_index));\r
 546                 CASPAR_LOG(info) << print() << L" Successfully Initialized.";   \r
 547         }\r
 548 \r
 549         virtual int64_t presentation_frame_age_millis() const override\r
 550         {\r
 551                 return consumer_ ? consumer_->current_presentation_age_ : 0;\r
 552         }\r
 553 \r
 554         virtual boost::unique_future<bool> send(const safe_ptr<core::read_frame>& frame) override\r
 555         {\r
 556                 return consumer_->send(frame);\r
 557         }\r
 558         \r
 559         virtual std::wstring print() const override\r
 560         {\r
 561                 return consumer_ ? consumer_->print() : L"[ogl_consumer]";\r
 562         }\r
 563 \r
 564         virtual boost::property_tree::wptree info() const override\r
 565         {\r
 566                 boost::property_tree::wptree info;\r
 567                 info.add(L"type", L"ogl-consumer");\r
 568                 info.add(L"key-only", config_.key_only);\r
 569                 info.add(L"windowed", config_.windowed);\r
 570                 info.add(L"auto-deinterlace", config_.auto_deinterlace);\r
 571                 return info;\r
 572         }\r
 573 \r
 574         virtual bool has_synchronization_clock() const override\r
 575         {\r
 576                 return false;\r
 577         }\r
 578         \r
 579         virtual size_t buffer_depth() const override\r
 580         {\r
 581                 return 1;\r
 582         }\r
 583 \r
 584         virtual int index() const override\r
 585         {\r
 586                 return 600 + config_.screen_index;\r
 587         }\r
 588 };      \r
 589 \r
 590 safe_ptr<core::frame_consumer> create_consumer(const core::parameters& params)\r
 591 {\r
 592         if(params.size() < 1 || params[0] != L"SCREEN")\r
 593                 return core::frame_consumer::empty();\r
 594         \r
 595         configuration config;\r
 596                 \r
 597         if(params.size() > 1)\r
 598                 config.screen_index =\r
 599                                 lexical_cast_or_default<int>(params[1], config.screen_index);\r
 600 \r
 601         config.screen_index = params.get(L"DEVICE", config.screen_index);\r
 602         config.windowed = !params.has(L"FULLSCREEN");\r
 603         config.key_only = params.has(L"KEY_ONLY");\r
 604         config.name = params.get(L"NAME", config.name);\r
 605 \r
 606         return make_safe<ogl_consumer_proxy>(config);\r
 607 }\r
 608 \r
 609 safe_ptr<core::frame_consumer> create_consumer(const boost::property_tree::wptree& ptree) \r
 610 {\r
 611         configuration config;\r
 612         config.name                             = ptree.get(L"name",     config.name);\r
 613         config.screen_index             = ptree.get(L"device",   config.screen_index+1)-1;\r
 614         config.windowed                 = ptree.get(L"windowed", config.windowed);\r
 615         config.key_only                 = ptree.get(L"key-only", config.key_only);\r
 616         config.auto_deinterlace = ptree.get(L"auto-deinterlace", config.auto_deinterlace);\r
 617         config.vsync                    = ptree.get(L"vsync", config.vsync);\r
 618 \r
 619         auto stretch_str = ptree.get(L"stretch", L"default");\r
 620         if(stretch_str == L"uniform")\r
 621                 config.stretch = stretch::uniform;\r
 622         else if(stretch_str == L"uniform_to_fill")\r
 623                 config.stretch = stretch::uniform_to_fill;\r
 624 \r
 625         auto aspect_str = ptree.get(L"aspect-ratio", L"default");\r
 626         if(aspect_str == L"16:9")\r
 627                 config.aspect = configuration::aspect_16_9;\r
 628         else if(aspect_str == L"4:3")\r
 629                 config.aspect = configuration::aspect_4_3;\r
 630         \r
 631         return make_safe<ogl_consumer_proxy>(config);\r
 632 }\r
 633 \r
 634 }}