git.sesse.net Git - casparcg/blob - modules/flash/producer/flash_producer.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 "../stdafx.h"\r
  23 \r
  24 #if defined(_MSC_VER)\r
  25 #pragma warning (disable : 4146)\r
  26 #pragma warning (disable : 4244)\r
  27 #endif\r
  28 \r
  29 #include "flash_producer.h"\r
  30 #include "FlashAxContainer.h"\r
  31 \r
  32 #include "../util/swf.h"\r
  33 \r
  34 #include <core/video_format.h>\r
  35 \r
  36 #include <core/monitor/monitor.h>\r
  37 #include <core/parameters/parameters.h>\r
  38 #include <core/producer/frame/basic_frame.h>\r
  39 #include <core/producer/frame/frame_factory.h>\r
  40 #include <core/mixer/write_frame.h>\r
  41 \r
  42 #include <common/env.h>\r
  43 #include <common/concurrency/executor.h>\r
  44 #include <common/concurrency/lock.h>\r
  45 #include <common/concurrency/future_util.h>\r
  46 #include <common/diagnostics/graph.h>\r
  47 #include <common/memory/memcpy.h>\r
  48 #include <common/memory/memclr.h>\r
  49 #include <common/utility/timer.h>\r
  50 \r
  51 #include <boost/filesystem.hpp>\r
  52 #include <boost/property_tree/ptree.hpp>\r
  53 #include <boost/thread.hpp>\r
  54 #include <boost/timer.hpp>\r
  55 #include <boost/algorithm/string.hpp>\r
  56 \r
  57 #include <functional>\r
  58 \r
  59 #include <tbb/spin_mutex.h>\r
  60 \r
  61 namespace caspar { namespace flash {\r
  62                 \r
  63 class bitmap\r
  64 {\r
  65 public:\r
  66         bitmap(size_t width, size_t height)\r
  67                 : bmp_data_(nullptr)\r
  68                 , hdc_(CreateCompatibleDC(0), DeleteDC)\r
  69         {       \r
  70                 BITMAPINFO info;\r
  71                 memset(&info, 0, sizeof(BITMAPINFO));\r
  72                 info.bmiHeader.biBitCount = 32;\r
  73                 info.bmiHeader.biCompression = BI_RGB;\r
  74                 info.bmiHeader.biHeight = -height;\r
  75                 info.bmiHeader.biPlanes = 1;\r
  76                 info.bmiHeader.biSize = sizeof(BITMAPINFO);\r
  77                 info.bmiHeader.biWidth = width;\r
  78 \r
  79                 bmp_.reset(CreateDIBSection(static_cast<HDC>(hdc_.get()), &info, DIB_RGB_COLORS, reinterpret_cast<void**>(&bmp_data_), 0, 0), DeleteObject);\r
  80                 SelectObject(static_cast<HDC>(hdc_.get()), bmp_.get()); \r
  81 \r
  82                 if(!bmp_data_)\r
  83                         BOOST_THROW_EXCEPTION(std::bad_alloc());\r
  84         }\r
  85 \r
  86         operator HDC() {return static_cast<HDC>(hdc_.get());}\r
  87 \r
  88         BYTE* data() { return bmp_data_;}\r
  89         const BYTE* data() const { return bmp_data_;}\r
  90 \r
  91 private:\r
  92         BYTE* bmp_data_;        \r
  93         std::shared_ptr<void> hdc_;\r
  94         std::shared_ptr<void> bmp_;\r
  95 };\r
  96 \r
  97 struct template_host\r
  98 {\r
  99         std::wstring  video_mode;\r
 100         std::wstring  filename;\r
 101         size_t            width;\r
 102         size_t            height;\r
 103 };\r
 104 \r
 105 template_host get_template_host(const core::video_format_desc& desc)\r
 106 {\r
 107         try\r
 108         {\r
 109                 std::vector<template_host> template_hosts;\r
 110                 auto template_hosts_element = env::properties().get_child_optional(\r
 111                                 L"configuration.template-hosts");\r
 112 \r
 113                 if (template_hosts_element)\r
 114                         BOOST_FOREACH(auto& xml_mapping, *template_hosts_element)\r
 115                         {\r
 116                                 try\r
 117                                 {\r
 118                                         template_host template_host;\r
 119                                         template_host.video_mode                = xml_mapping.second.get(L"video-mode", L"");\r
 120                                         template_host.filename                  = xml_mapping.second.get(L"filename",   L"cg.fth");\r
 121                                         template_host.width                             = xml_mapping.second.get(L"width",              desc.width);\r
 122                                         template_host.height                    = xml_mapping.second.get(L"height",             desc.height);\r
 123                                         template_hosts.push_back(template_host);\r
 124                                 }\r
 125                                 catch(...){}\r
 126                         }\r
 127 \r
 128                 auto template_host_it = boost::find_if(template_hosts, [&](template_host template_host){return template_host.video_mode == desc.name;});\r
 129                 if(template_host_it == template_hosts.end())\r
 130                         template_host_it = boost::find_if(template_hosts, [&](template_host template_host){return template_host.video_mode == L"";});\r
 131 \r
 132                 if(template_host_it != template_hosts.end())\r
 133                         return *template_host_it;\r
 134         }\r
 135         catch(...){}\r
 136                 \r
 137         template_host template_host;\r
 138         template_host.filename = L"cg.fth";\r
 139 \r
 140         for(auto it = boost::filesystem2::wdirectory_iterator(env::template_folder()); it != boost::filesystem2::wdirectory_iterator(); ++it)\r
 141         {\r
 142                 if(boost::iequals(it->path().extension(), L"." + desc.name))\r
 143                 {\r
 144                         template_host.filename = it->filename();\r
 145                         break;\r
 146                 }\r
 147         }\r
 148 \r
 149         template_host.width =  desc.square_width;\r
 150         template_host.height = desc.square_height;\r
 151         return template_host;\r
 152 }\r
 153 \r
 154 boost::mutex& get_global_init_destruct_mutex()\r
 155 {\r
 156         static boost::mutex m;\r
 157 \r
 158         return m;\r
 159 }\r
 160 \r
 161 class flash_renderer\r
 162 {       \r
 163         struct com_init\r
 164         {\r
 165                 HRESULT result_;\r
 166 \r
 167                 com_init()\r
 168                         : result_(CoInitialize(nullptr))\r
 169                 {\r
 170                         if(FAILED(result_))\r
 171                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Failed to initialize com-context for flash-player"));\r
 172                 }\r
 173 \r
 174                 ~com_init()\r
 175                 {\r
 176                         if(SUCCEEDED(result_))\r
 177                                 ::CoUninitialize();\r
 178                 }\r
 179         } com_init_;\r
 180         \r
 181         const safe_ptr<diagnostics::graph>                              graph_;\r
 182         const size_t                                                                    width_;\r
 183         const size_t                                                                    height_;\r
 184         const std::wstring                                                              filename_;\r
 185         const std::shared_ptr<core::frame_factory>              frame_factory_;\r
 186         \r
 187         CComObject<caspar::flash::FlashAxContainer>*    ax_;\r
 188         safe_ptr<core::basic_frame>                                             head_;\r
 189         bitmap                                                                                  bmp_;\r
 190         \r
 191         boost::timer                                                                    frame_timer_;\r
 192         boost::timer                                                                    tick_timer_;\r
 193 \r
 194         high_prec_timer                                                                 timer_;\r
 195 public:\r
 196         flash_renderer(const safe_ptr<diagnostics::graph>& graph, const std::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, int width, int height) \r
 197                 : graph_(graph)\r
 198                 , width_(width)\r
 199                 , height_(height)\r
 200                 , filename_(filename)\r
 201                 , frame_factory_(frame_factory)\r
 202                 , ax_(nullptr)\r
 203                 , head_(core::basic_frame::late())\r
 204                 , bmp_(width, height)\r
 205         {               \r
 206                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 207                 graph_->set_color("tick-time", diagnostics::color(0.0f, 0.6f, 0.9f));\r
 208                 graph_->set_color("param", diagnostics::color(1.0f, 0.5f, 0.0f));\r
 209 \r
 210                 lock(get_global_init_destruct_mutex(), [this]\r
 211                 {\r
 212 \r
 213                         CoInitialize(nullptr);\r
 214 \r
 215                         if(FAILED(CComObject<caspar::flash::FlashAxContainer>::CreateInstance(&ax_)))\r
 216                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Failed to create FlashAxContainer"));\r
 217                 \r
 218                         if(FAILED(ax_->CreateAxControl()))\r
 219                                 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Failed to Create FlashAxControl"));\r
 220                 });\r
 221 \r
 222                 ax_->set_print([this]{return print();});\r
 223                 \r
 224                 CComPtr<IShockwaveFlash> spFlash;\r
 225                 if(FAILED(ax_->QueryControl(&spFlash)))\r
 226                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Failed to Query FlashAxControl"));\r
 227                                                                                                 \r
 228                 if(FAILED(spFlash->put_Playing(true)) )\r
 229                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Failed to start playing Flash"));\r
 230 \r
 231                 if(FAILED(spFlash->put_Movie(CComBSTR(filename.c_str()))))\r
 232                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Failed to Load Template Host"));\r
 233                                                                                 \r
 234                 if(FAILED(spFlash->put_ScaleMode(2)))  //Exact fit. Scale without respect to the aspect ratio.\r
 235                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Failed to Set Scale Mode"));\r
 236                                                 \r
 237                 ax_->SetSize(width_, height_);          \r
 238                 render_frame(0.0);\r
 239         \r
 240                 CASPAR_LOG(info) << print() << L" Initialized.";\r
 241         }\r
 242 \r
 243         ~flash_renderer()\r
 244         {               \r
 245                 if(ax_)\r
 246                 {\r
 247                         lock(get_global_init_destruct_mutex(), [this]\r
 248                         {\r
 249                                 ax_->DestroyAxControl();\r
 250                                 ax_->Release();\r
 251                         });\r
 252                 }\r
 253                 graph_->set_value("tick-time", 0.0f);\r
 254                 graph_->set_value("frame-time", 0.0f);\r
 255                 CASPAR_LOG(info) << print() << L" Uninitialized.";\r
 256         }\r
 257         \r
 258         std::wstring call(const std::wstring& param)\r
 259         {               \r
 260                 std::wstring result;\r
 261 \r
 262                 CASPAR_LOG(trace) << print() << " Call: " << param;\r
 263 \r
 264                 if(!ax_->FlashCall(param, result))\r
 265                         CASPAR_LOG(warning) << print() << L" Flash call failed:" << param;//BOOST_THROW_EXCEPTION(invalid_operation() << msg_info("Flash function call failed.") << arg_name_info("param") << arg_value_info(narrow(param)));\r
 266                 graph_->set_tag("param");\r
 267 \r
 268                 return result;\r
 269         }\r
 270         \r
 271         safe_ptr<core::basic_frame> render_frame(double sync)\r
 272         {\r
 273                 float frame_time = 1.0f/ax_->GetFPS();\r
 274 \r
 275                 if (!ax_->IsReadyToRender())\r
 276                         return head_;\r
 277 \r
 278                 if(ax_->IsEmpty())\r
 279                         return core::basic_frame::empty();\r
 280 \r
 281                 if (sync > 0.00001)\r
 282                         timer_.tick(frame_time*sync); // This will block the thread.\r
 283                 \r
 284                 graph_->set_value("tick-time", static_cast<float>(tick_timer_.elapsed()/frame_time)*0.5f);\r
 285                 tick_timer_.restart();\r
 286 \r
 287                 frame_timer_.restart();\r
 288 \r
 289                 ax_->Tick();\r
 290                 if(ax_->InvalidRect())\r
 291                 {\r
 292                         core::pixel_format_desc desc;\r
 293                         desc.pix_fmt = core::pixel_format::bgra;\r
 294                         desc.planes.push_back(core::pixel_format_desc::plane(width_, height_, 4));\r
 295                         auto frame = frame_factory_->create_frame(this, desc);\r
 296 \r
 297                         fast_memclr(bmp_.data(), width_*height_*4);\r
 298                         ax_->DrawControl(bmp_);\r
 299 \r
 300                         if(frame->image_data().size() == static_cast<int>(width_*height_*4))\r
 301                         {\r
 302                                 fast_memcpy(frame->image_data().begin(), bmp_.data(), width_*height_*4);\r
 303                                 frame->commit();\r
 304                                 head_ = frame;\r
 305                         }\r
 306                 }               \r
 307                                         \r
 308                 MSG msg;\r
 309                 while(PeekMessage(&msg, NULL, NULL, NULL, PM_REMOVE)) // DO NOT REMOVE THE MESSAGE DISPATCH LOOP. Without this some stuff doesn't work!  \r
 310                 {\r
 311                         if(msg.message == WM_TIMER && msg.wParam == 3 && msg.lParam == 0) // We tick this inside FlashAxContainer\r
 312                                 continue;\r
 313                         \r
 314                         TranslateMessage(&msg);\r
 315                         DispatchMessage(&msg);                  \r
 316                 }\r
 317                                                                                 \r
 318                 graph_->set_value("frame-time", static_cast<float>(frame_timer_.elapsed()/frame_time)*0.5f);\r
 319                 return head_;\r
 320         }\r
 321 \r
 322         bool is_empty() const\r
 323         {\r
 324                 return ax_->IsEmpty();\r
 325         }\r
 326 \r
 327         double fps() const\r
 328         {\r
 329                 return ax_->GetFPS();   \r
 330         }\r
 331         \r
 332         std::wstring print()\r
 333         {\r
 334                 return L"flash-player[" + boost::filesystem::wpath(filename_).filename() \r
 335                                   + L"|" + boost::lexical_cast<std::wstring>(width_)\r
 336                                   + L"x" + boost::lexical_cast<std::wstring>(height_)\r
 337                                   + L"]";               \r
 338         }\r
 339 };\r
 340 \r
 341 struct flash_producer : public core::frame_producer\r
 342 {       \r
 343         core::monitor::subject                                                                          monitor_subject_;\r
 344         const std::wstring                                                                                      filename_;      \r
 345         const safe_ptr<core::frame_factory>                                                     frame_factory_;\r
 346         const int                                                                                                       width_;\r
 347         const int                                                                                                       height_;\r
 348         const int                                                                                                       buffer_size_;\r
 349 \r
 350         tbb::atomic<int>                                                                                        fps_;\r
 351 \r
 352         safe_ptr<diagnostics::graph>                                                            graph_;\r
 353 \r
 354         std::queue<safe_ptr<core::basic_frame>>                                         frame_buffer_;\r
 355         tbb::concurrent_bounded_queue<safe_ptr<core::basic_frame>>      output_buffer_;\r
 356         \r
 357         safe_ptr<core::basic_frame>                                                                     last_frame_;\r
 358                 \r
 359         std::unique_ptr<flash_renderer>                                                         renderer_;\r
 360         tbb::atomic<bool>                                                                                       has_renderer_;\r
 361 \r
 362         executor                                                                                                        executor_;      \r
 363 public:\r
 364         flash_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, size_t width, size_t height) \r
 365                 : filename_(filename)           \r
 366                 , frame_factory_(frame_factory)\r
 367                 , last_frame_(core::basic_frame::empty())\r
 368                 , width_(width > 0 ? width : frame_factory->get_video_format_desc().width)\r
 369                 , height_(height > 0 ? height : frame_factory->get_video_format_desc().height)\r
 370                 , buffer_size_(env::properties().get(L"configuration.flash.buffer-depth", frame_factory_->get_video_format_desc().fps > 30.0 ? 4 : 2))\r
 371                 , executor_(L"flash_producer")\r
 372         {       \r
 373                 fps_ = 0;\r
 374          \r
 375                 graph_->set_color("late-frame", diagnostics::color(0.6f, 0.3f, 0.9f));\r
 376                 graph_->set_color("buffered", diagnostics::color(0.8f, 0.3f, 0.2f));\r
 377                 graph_->set_text(print());\r
 378                 diagnostics::register_graph(graph_);\r
 379                 \r
 380                 has_renderer_ = false;\r
 381         }\r
 382 \r
 383         ~flash_producer()\r
 384         {\r
 385                 executor_.invoke([this]\r
 386                 {\r
 387                         renderer_.reset();\r
 388                 }, high_priority);\r
 389         }\r
 390 \r
 391         // frame_producer\r
 392 \r
 393         void log_buffered()\r
 394         {\r
 395                 double buffered = output_buffer_.size();\r
 396                 auto ratio = buffered / buffer_size_;\r
 397                 graph_->set_value("buffered", ratio);\r
 398         }\r
 399                 \r
 400         virtual safe_ptr<core::basic_frame> receive(int) override\r
 401         {                                       \r
 402                 auto frame = core::basic_frame::late();\r
 403 \r
 404                 if(output_buffer_.try_pop(frame))\r
 405                         last_frame_ = frame;\r
 406                 else\r
 407                         graph_->set_tag("late-frame");\r
 408 \r
 409                 fill_buffer();\r
 410                 \r
 411                 monitor_subject_ << core::monitor::message("/host/path")                % filename_\r
 412                                              << core::monitor::message("/host/width")   % width_\r
 413                                              << core::monitor::message("/host/height")  % height_\r
 414                                              << core::monitor::message("/host/fps")             % fps_\r
 415                                              << core::monitor::message("/buffer")               % output_buffer_.size() % buffer_size_;\r
 416 \r
 417                 return frame;\r
 418         }\r
 419 \r
 420         virtual safe_ptr<core::basic_frame> last_frame() const override\r
 421         {\r
 422                 return last_frame_;\r
 423         }               \r
 424         \r
 425         virtual boost::unique_future<std::wstring> call(const std::wstring& param) override\r
 426         {       \r
 427                 if (param == L"?")\r
 428                         return wrap_as_future(std::wstring(has_renderer_ ? L"1" : L"0"));\r
 429 \r
 430                 return executor_.begin_invoke([this, param]() -> std::wstring\r
 431                 {\r
 432                         try\r
 433                         {\r
 434                                 bool initialize_renderer = !renderer_;\r
 435 \r
 436                                 if(initialize_renderer)\r
 437                                 {\r
 438                                         renderer_.reset(new flash_renderer(graph_, frame_factory_, filename_, width_, height_));\r
 439 \r
 440                                         has_renderer_ = true;\r
 441                                 }\r
 442 \r
 443                                 std::wstring result = param == L"start_rendering"\r
 444                                                 ? L"" : renderer_->call(param);\r
 445 \r
 446                                 if (initialize_renderer)\r
 447                                 {\r
 448                                         do_fill_buffer(true);\r
 449                                 }\r
 450 \r
 451                                 return result;\r
 452                                 //const auto& format_desc = frame_factory_->get_video_format_desc();\r
 453                                 //if(abs(context_->fps() - format_desc.fps) > 0.01 && abs(context_->fps()/2.0 - format_desc.fps) > 0.01)\r
 454                                 //      CASPAR_LOG(warning) << print() << " Invalid frame-rate: " << context_->fps() << L". Should be either " << format_desc.fps << L" or " << format_desc.fps*2.0 << L".";\r
 455                         }\r
 456                         catch(...)\r
 457                         {\r
 458                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 459                                 renderer_.reset(nullptr);\r
 460                                 has_renderer_ = false;\r
 461                         }\r
 462 \r
 463                         return L"";\r
 464                 }, high_priority);\r
 465         }\r
 466                 \r
 467         virtual std::wstring print() const override\r
 468         { \r
 469                 return L"flash[" + boost::filesystem::wpath(filename_).filename() + L"|" + boost::lexical_cast<std::wstring>(fps_) + L"]";              \r
 470         }       \r
 471 \r
 472         virtual boost::property_tree::wptree info() const override\r
 473         {\r
 474                 boost::property_tree::wptree info;\r
 475                 info.add(L"type", L"flash-producer");\r
 476                 return info;\r
 477         }\r
 478 \r
 479         // flash_producer\r
 480 \r
 481         void fill_buffer()\r
 482         {\r
 483                 executor_.begin_invoke([this]\r
 484                 {\r
 485                         do_fill_buffer(false);\r
 486                 });\r
 487         }\r
 488 \r
 489         void do_fill_buffer(bool initial_buffer_fill)\r
 490         {\r
 491                 int nothing_rendered = 0;\r
 492                 const int MAX_NOTHING_RENDERED_RETRIES = 4;\r
 493 \r
 494                 auto to_render = buffer_size_ - output_buffer_.size();\r
 495                 bool allow_faster_rendering = !initial_buffer_fill;\r
 496                 int rendered = 0;\r
 497 \r
 498                 while (rendered < to_render)\r
 499                 {\r
 500                         bool was_rendered = next(allow_faster_rendering);\r
 501                         log_buffered();\r
 502 \r
 503                         if (was_rendered)\r
 504                         {\r
 505                                 ++rendered;\r
 506                         }\r
 507                         else\r
 508                         {\r
 509                                 if (nothing_rendered++ < MAX_NOTHING_RENDERED_RETRIES)\r
 510                                 {\r
 511                                         // Flash player not ready with first frame, sleep to not busy-loop;\r
 512                                         boost::this_thread::sleep(boost::posix_time::milliseconds(10));\r
 513                                         boost::this_thread::yield();\r
 514                                 }\r
 515                                 else\r
 516                                         return;\r
 517                         }\r
 518 \r
 519                         executor_.yield();\r
 520                 }\r
 521         }\r
 522         \r
 523         bool next(bool allow_faster_rendering)\r
 524         {       \r
 525                 if(!renderer_)\r
 526                         frame_buffer_.push(core::basic_frame::empty());\r
 527 \r
 528                 if(frame_buffer_.empty())\r
 529                 {\r
 530                         auto format_desc = frame_factory_->get_video_format_desc();\r
 531                                         \r
 532                         if(abs(renderer_->fps()/2.0 - format_desc.fps) < 2.0) // flash == 2 * format -> interlace\r
 533                         {\r
 534                                 auto frame1 = render_frame(allow_faster_rendering);\r
 535 \r
 536                                 if (frame1 != core::basic_frame::late())\r
 537                                 {\r
 538                                         auto frame2 = render_frame(allow_faster_rendering);\r
 539                                         frame_buffer_.push(core::basic_frame::interlace(frame1, frame2, format_desc.field_mode));\r
 540                                 }\r
 541                         }\r
 542                         else if(abs(renderer_->fps() - format_desc.fps/2.0) < 2.0) // format == 2 * flash -> duplicate\r
 543                         {\r
 544                                 auto frame = render_frame(allow_faster_rendering);\r
 545 \r
 546                                 if (frame != core::basic_frame::late())\r
 547                                 {\r
 548                                         frame_buffer_.push(frame);\r
 549                                         frame_buffer_.push(frame);\r
 550                                 }\r
 551                         }\r
 552                         else //if(abs(renderer_->fps() - format_desc_.fps) < 0.1) // format == flash -> simple\r
 553                         {\r
 554                                 auto frame = render_frame(allow_faster_rendering);\r
 555 \r
 556                                 if (frame != core::basic_frame::late())\r
 557                                         frame_buffer_.push(frame);\r
 558                         }\r
 559                                                 \r
 560                         fps_.fetch_and_store(static_cast<int>(renderer_->fps()*100.0));                         \r
 561                         graph_->set_text(print());\r
 562                         \r
 563                         if(renderer_->is_empty())\r
 564                         {\r
 565                                 renderer_.reset();\r
 566                                 has_renderer_ = false;\r
 567                         }\r
 568                 }\r
 569 \r
 570                 if (frame_buffer_.empty())\r
 571                 {\r
 572                         return false;\r
 573                 }\r
 574                 else\r
 575                 {\r
 576                         output_buffer_.push(std::move(frame_buffer_.front()));\r
 577                         frame_buffer_.pop();\r
 578                         return true;\r
 579                 }\r
 580         }\r
 581 \r
 582         safe_ptr<core::basic_frame> render_frame(bool allow_faster_rendering)\r
 583         {\r
 584                 double sync;\r
 585 \r
 586                 if (allow_faster_rendering)\r
 587                 {\r
 588                         double ratio = std::min(\r
 589                                         1.0,\r
 590                                         static_cast<double>(output_buffer_.size())\r
 591                                                         / static_cast<double>(std::max(1, buffer_size_ - 1)));\r
 592                         sync  = 2 * ratio - ratio * ratio;\r
 593                 }\r
 594                 else\r
 595                 {\r
 596                         sync = 1.0;\r
 597                 }\r
 598 \r
 599                 return renderer_->render_frame(sync);\r
 600         }\r
 601 \r
 602         core::monitor::subject& monitor_output()\r
 603         {\r
 604                 return monitor_subject_;\r
 605         }\r
 606 };\r
 607 \r
 608 safe_ptr<core::frame_producer> create_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 609 {\r
 610         auto template_host = get_template_host(frame_factory->get_video_format_desc());\r
 611         \r
 612         auto filename = env::template_folder() + L"\\" + template_host.filename;\r
 613         \r
 614         if(!boost::filesystem::exists(filename))\r
 615                 BOOST_THROW_EXCEPTION(file_not_found() << boost::errinfo_file_name(narrow(filename)));  \r
 616 \r
 617         return create_producer_destroy_proxy(\r
 618                    create_producer_print_proxy(\r
 619                         make_safe<flash_producer>(frame_factory, filename, template_host.width, template_host.height)));\r
 620 }\r
 621 \r
 622 safe_ptr<core::frame_producer> create_swf_producer(\r
 623                 const safe_ptr<core::frame_factory>& frame_factory,\r
 624                 const core::parameters& params) \r
 625 {\r
 626         auto filename = env::media_folder() + L"\\" + params.at_original(0) + L".swf";\r
 627         \r
 628         if(!boost::filesystem::exists(filename))\r
 629                 return core::frame_producer::empty();\r
 630 \r
 631         swf_t::header_t header(filename);\r
 632 \r
 633         auto producer = make_safe<flash_producer>(\r
 634                         frame_factory, filename, header.frame_width, header.frame_height);\r
 635 \r
 636         producer->call(L"start_rendering").get();\r
 637 \r
 638         return create_producer_destroy_proxy(create_producer_print_proxy(producer));\r
 639 }\r
 640 \r
 641 std::wstring find_template(const std::wstring& template_name)\r
 642 {\r
 643         if(boost::filesystem::exists(template_name + L".ft")) \r
 644                 return template_name + L".ft";\r
 645         \r
 646         if(boost::filesystem::exists(template_name + L".ct"))\r
 647                 return template_name + L".ct";\r
 648         \r
 649         if(boost::filesystem::exists(template_name + L".swf"))\r
 650                 return template_name + L".swf";\r
 651 \r
 652         return L"";\r
 653 }\r
 654 \r
 655 }}