git.sesse.net Git - casparcg/blob - modules/flash/producer/flash_producer.cpp

   1 /*
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Robert Nagy, ronag89@gmail.com
  20 */
  21
  22 #include "../stdafx.h"
  23
  24 #if defined(_MSC_VER)
  25 #pragma warning (disable : 4146)
  26 #pragma warning (disable : 4244)
  27 #endif
  28
  29 #include "flash_producer.h"
  30 #include "FlashAxContainer.h"
  31
  32 #include "../util/swf.h"
  33
  34 #include <core/video_format.h>
  35
  36 #include <core/frame/frame.h>
  37 #include <core/frame/draw_frame.h>
  38 #include <core/frame/frame_factory.h>
  39 #include <core/frame/pixel_format.h>
  40 #include <core/frame/audio_channel_layout.h>
  41 #include <core/producer/frame_producer.h>
  42 #include <core/monitor/monitor.h>
  43 #include <core/help/help_repository.h>
  44 #include <core/help/help_sink.h>
  45
  46 #include <common/env.h>
  47 #include <common/executor.h>
  48 #include <common/lock.h>
  49 #include <common/diagnostics/graph.h>
  50 #include <common/prec_timer.h>
  51 #include <common/array.h>
  52
  53 #include <boost/filesystem.hpp>
  54 #include <boost/property_tree/ptree.hpp>
  55 #include <boost/thread.hpp>
  56 #include <boost/timer.hpp>
  57 #include <boost/algorithm/string.hpp>
  58
  59 #include <tbb/spin_mutex.h>
  60
  61 #include <functional>
  62
  63 namespace caspar { namespace flash {
  64
  65 class bitmap
  66 {
  67 public:
  68         bitmap(int width, int height)
  69                 : bmp_data_(nullptr)
  70                 , hdc_(CreateCompatibleDC(0), DeleteDC)
  71         {
  72                 BITMAPINFO info;
  73                 memset(&info, 0, sizeof(BITMAPINFO));
  74                 info.bmiHeader.biBitCount = 32;
  75                 info.bmiHeader.biCompression = BI_RGB;
  76                 info.bmiHeader.biHeight = static_cast<LONG>(-height);
  77                 info.bmiHeader.biPlanes = 1;
  78                 info.bmiHeader.biSize = sizeof(BITMAPINFO);
  79                 info.bmiHeader.biWidth = static_cast<LONG>(width);
  80
  81                 bmp_.reset(CreateDIBSection(static_cast<HDC>(hdc_.get()), &info, DIB_RGB_COLORS, reinterpret_cast<void**>(&bmp_data_), 0, 0), DeleteObject);
  82                 SelectObject(static_cast<HDC>(hdc_.get()), bmp_.get());
  83
  84                 if(!bmp_data_)
  85                         CASPAR_THROW_EXCEPTION(bad_alloc());
  86         }
  87
  88         operator HDC() {return static_cast<HDC>(hdc_.get());}
  89
  90         BYTE* data() { return bmp_data_;}
  91         const BYTE* data() const { return bmp_data_;}
  92
  93 private:
  94         BYTE* bmp_data_;
  95         std::shared_ptr<void> hdc_;
  96         std::shared_ptr<void> bmp_;
  97 };
  98
  99 struct template_host
 100 {
 101         std::wstring  video_mode;
 102         std::wstring  filename;
 103         int                       width;
 104         int                       height;
 105 };
 106
 107 template_host get_template_host(const core::video_format_desc& desc)
 108 {
 109         try
 110         {
 111                 std::vector<template_host> template_hosts;
 112                 auto template_hosts_element = env::properties().get_child_optional(
 113                         L"configuration.template-hosts");
 114
 115                 if (template_hosts_element)
 116                 {
 117                         for (auto& xml_mapping : *template_hosts_element)
 118                         {
 119                                 try
 120                                 {
 121                                         template_host template_host;
 122                                         template_host.video_mode                = xml_mapping.second.get(L"video-mode", L"");
 123                                         template_host.filename                  = xml_mapping.second.get(L"filename",   L"cg.fth");
 124                                         template_host.width                             = xml_mapping.second.get(L"width",              desc.width);
 125                                         template_host.height                    = xml_mapping.second.get(L"height",             desc.height);
 126                                         template_hosts.push_back(template_host);
 127                                 }
 128                                 catch(...){}
 129                         }
 130                 }
 131
 132                 auto template_host_it = boost::find_if(template_hosts, [&](template_host template_host){return template_host.video_mode == desc.name;});
 133                 if(template_host_it == template_hosts.end())
 134                         template_host_it = boost::find_if(template_hosts, [&](template_host template_host){return template_host.video_mode == L"";});
 135
 136                 if(template_host_it != template_hosts.end())
 137                         return *template_host_it;
 138         }
 139         catch(...){}
 140
 141         template_host template_host;
 142         template_host.filename = L"cg.fth";
 143
 144         for(auto it = boost::filesystem::directory_iterator(env::template_folder()); it != boost::filesystem::directory_iterator(); ++it)
 145         {
 146                 if(boost::iequals(it->path().extension().wstring(), L"." + desc.name))
 147                 {
 148                         template_host.filename = it->path().filename().wstring();
 149                         break;
 150                 }
 151         }
 152
 153         template_host.width =  desc.square_width;
 154         template_host.height = desc.square_height;
 155         return template_host;
 156 }
 157
 158 boost::mutex& get_global_init_destruct_mutex()
 159 {
 160         static boost::mutex m;
 161
 162         return m;
 163 }
 164
 165 class flash_renderer
 166 {
 167         struct com_init
 168         {
 169                 HRESULT result_ = CoInitialize(nullptr);
 170
 171                 com_init()
 172                 {
 173                         if(FAILED(result_))
 174                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info("Failed to initialize com-context for flash-player"));
 175                 }
 176
 177                 ~com_init()
 178                 {
 179                         if(SUCCEEDED(result_))
 180                                 ::CoUninitialize();
 181                 }
 182         } com_init_;
 183
 184         core::monitor::subject&                                                 monitor_subject_;
 185
 186         const std::wstring                                                              filename_;
 187         const int                                                                               width_;
 188         const int                                                                               height_;
 189
 190         const std::shared_ptr<core::frame_factory>              frame_factory_;
 191
 192         CComObject<caspar::flash::FlashAxContainer>*    ax_                                     = nullptr;
 193         core::draw_frame                                                                head_                           = core::draw_frame::late();
 194         bitmap                                                                                  bmp_                            { width_, height_ };
 195         prec_timer                                                                              timer_;
 196         caspar::timer                                                                   tick_timer_;
 197
 198         spl::shared_ptr<diagnostics::graph>                             graph_;
 199
 200 public:
 201         flash_renderer(core::monitor::subject& monitor_subject, const spl::shared_ptr<diagnostics::graph>& graph, const std::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, int width, int height)
 202                 : monitor_subject_(monitor_subject)
 203                 , graph_(graph)
 204                 , filename_(filename)
 205                 , width_(width)
 206                 , height_(height)
 207                 , frame_factory_(frame_factory)
 208                 , bmp_(width, height)
 209         {
 210                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
 211                 graph_->set_color("tick-time", diagnostics::color(0.0f, 0.6f, 0.9f));
 212                 graph_->set_color("param", diagnostics::color(1.0f, 0.5f, 0.0f));
 213
 214                 if(FAILED(CComObject<caspar::flash::FlashAxContainer>::CreateInstance(&ax_)))
 215                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info(print() + L" Failed to create FlashAxContainer"));
 216
 217                 if(FAILED(ax_->CreateAxControl()))
 218                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info(print() + L" Failed to Create FlashAxControl"));
 219
 220                 ax_->set_print([this]{return print(); });
 221
 222                 CComPtr<IShockwaveFlash> spFlash;
 223                 if(FAILED(ax_->QueryControl(&spFlash)))
 224                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info(print() + L" Failed to Query FlashAxControl"));
 225
 226                 if(FAILED(spFlash->put_Playing(true)) )
 227                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info(print() + L" Failed to start playing Flash"));
 228
 229                 // Concurrent initialization of two template hosts causes a
 230                 // SecurityException later when CG ADD is performed. Initialization is
 231                 // therefore serialized via a global mutex.
 232                 lock(get_global_init_destruct_mutex(), [&]
 233                 {
 234                         if (FAILED(spFlash->put_Movie(CComBSTR(filename.c_str()))))
 235                                 CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info(print() + L" Failed to Load Template Host"));
 236                 });
 237
 238                 if(FAILED(spFlash->put_ScaleMode(2)))  //Exact fit. Scale without respect to the aspect ratio.
 239                         CASPAR_THROW_EXCEPTION(caspar_exception() << msg_info(print() + L" Failed to Set Scale Mode"));
 240
 241                 ax_->SetSize(width_, height_);
 242                 render_frame(0.0);
 243
 244                 CASPAR_LOG(info) << print() << L" Initialized.";
 245         }
 246
 247         ~flash_renderer()
 248         {
 249                 if(ax_)
 250                 {
 251                         ax_->DestroyAxControl();
 252                         ax_->Release();
 253                 }
 254                 graph_->set_value("tick-time", 0.0f);
 255                 graph_->set_value("frame-time", 0.0f);
 256                 CASPAR_LOG(info) << print() << L" Uninitialized.";
 257         }
 258
 259         std::wstring call(const std::wstring& param)
 260         {
 261                 std::wstring result;
 262
 263                 CASPAR_LOG(debug) << print() << " Call: " << param;
 264
 265                 if(!ax_->FlashCall(param, result))
 266                         CASPAR_LOG(warning) << print() << L" Flash call failed:" << param;//CASPAR_THROW_EXCEPTION(invalid_operation() << msg_info("Flash function call failed.") << arg_name_info("param") << arg_value_info(narrow(param)));
 267
 268                 if (boost::starts_with(result, L"<exception>"))
 269                         CASPAR_LOG(warning) << print() << L" Flash call failed:" << result;
 270
 271                 graph_->set_tag(diagnostics::tag_severity::INFO, "param");
 272
 273                 return result;
 274         }
 275
 276         core::draw_frame render_frame(double sync)
 277         {
 278                 const float frame_time = 1.0f/fps();
 279
 280                 if (!ax_->IsReadyToRender())
 281                         return head_;
 282
 283                 if (is_empty())
 284                         return core::draw_frame::empty();
 285
 286                 if (sync > 0.00001)
 287                         timer_.tick(frame_time*sync); // This will block the thread.
 288
 289                 graph_->set_value("tick-time", static_cast<float>(tick_timer_.elapsed() / frame_time) * 0.5f);
 290                 tick_timer_.restart();
 291                 boost::timer frame_timer;
 292                 ax_->Tick();
 293
 294                 if (ax_->InvalidRect())
 295                 {
 296                         core::pixel_format_desc desc = core::pixel_format::bgra;
 297                         desc.planes.push_back(core::pixel_format_desc::plane(width_, height_, 4));
 298                         auto frame = frame_factory_->create_frame(this, desc, core::audio_channel_layout::invalid());
 299
 300                         std::memset(bmp_.data(), 0, width_ * height_ * 4);
 301                         ax_->DrawControl(bmp_);
 302
 303                         std::memcpy(frame.image_data(0).begin(), bmp_.data(), width_*height_*4);
 304                         head_ = core::draw_frame(std::move(frame));
 305                 }
 306
 307                 MSG msg;
 308                 while (PeekMessage(&msg, NULL, NULL, NULL, PM_REMOVE)) // DO NOT REMOVE THE MESSAGE DISPATCH LOOP. Without this some stuff doesn't work!
 309                 {
 310                         if (msg.message == WM_TIMER && msg.wParam == 3 && msg.lParam == 0) // We tick this inside FlashAxContainer
 311                                 continue;
 312
 313                         TranslateMessage(&msg);
 314                         DispatchMessage(&msg);
 315                 }
 316
 317                 graph_->set_value("frame-time", static_cast<float>(frame_timer.elapsed()/frame_time)*0.5f);
 318                 monitor_subject_ << core::monitor::message("/renderer/profiler/time") % frame_timer.elapsed() % frame_time;
 319                 return head_;
 320         }
 321
 322         bool is_empty() const
 323         {
 324                 return ax_->IsEmpty();
 325         }
 326
 327         double fps() const
 328         {
 329                 return ax_->GetFPS();
 330         }
 331
 332         std::wstring print()
 333         {
 334                 return L"flash-player[" + boost::filesystem::path(filename_).filename().wstring()
 335                                   + L"|" + boost::lexical_cast<std::wstring>(width_)
 336                                   + L"x" + boost::lexical_cast<std::wstring>(height_)
 337                                   + L"]";
 338         }
 339 };
 340
 341 struct flash_producer : public core::frame_producer_base
 342 {
 343         core::monitor::subject                                                  monitor_subject_;
 344         const std::wstring                                                              filename_;
 345         const spl::shared_ptr<core::frame_factory>              frame_factory_;
 346         const core::video_format_desc                                   format_desc_;
 347         const int                                                                               width_;
 348         const int                                                                               height_;
 349         core::constraints                                                               constraints_            { static_cast<double>(width_), static_cast<double>(height_) };
 350         const int                                                                               buffer_size_            = env::properties().get(L"configuration.flash.buffer-depth", format_desc_.fps > 30.0 ? 4 : 2);
 351
 352         tbb::atomic<int>                                                                fps_;
 353
 354         spl::shared_ptr<diagnostics::graph>                             graph_;
 355
 356         std::queue<core::draw_frame>                                    frame_buffer_;
 357         tbb::concurrent_bounded_queue<core::draw_frame> output_buffer_;
 358
 359         core::draw_frame                                                                last_frame_                     = core::draw_frame::empty();
 360
 361         std::unique_ptr<flash_renderer>                                 renderer_;
 362         tbb::atomic<bool>                                                               has_renderer_;
 363
 364         executor                                                                                executor_                       = L"flash_producer";
 365 public:
 366         flash_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const core::video_format_desc& format_desc, const std::wstring& filename, int width, int height)
 367                 : filename_(filename)
 368                 , frame_factory_(frame_factory)
 369                 , format_desc_(format_desc)
 370                 , width_(width > 0 ? width : format_desc.width)
 371                 , height_(height > 0 ? height : format_desc.height)
 372         {
 373                 fps_ = 0;
 374
 375                 graph_->set_color("buffered", diagnostics::color(1.0f, 1.0f, 0.0f));
 376                 graph_->set_color("late-frame", diagnostics::color(0.6f, 0.3f, 0.9f));
 377                 graph_->set_text(print());
 378                 diagnostics::register_graph(graph_);
 379
 380                 has_renderer_ = false;
 381
 382                 CASPAR_LOG(info) << print() << L" Initialized";
 383         }
 384
 385         ~flash_producer()
 386         {
 387                 executor_.invoke([this]
 388                 {
 389                         renderer_.reset();
 390                 }, task_priority::high_priority);
 391         }
 392
 393         // frame_producer
 394
 395         void log_buffered()
 396         {
 397                 double buffered = output_buffer_.size();
 398                 auto ratio = buffered / buffer_size_;
 399                 graph_->set_value("buffered", ratio);
 400         }
 401
 402         core::draw_frame receive_impl() override
 403         {
 404                 auto frame = last_frame_;
 405
 406                 double buffered = output_buffer_.size();
 407                 auto ratio = buffered / buffer_size_;
 408                 graph_->set_value("buffered", ratio);
 409
 410                 if (output_buffer_.try_pop(frame))
 411                         last_frame_ = frame;
 412                 else
 413                         graph_->set_tag(diagnostics::tag_severity::WARNING, "late-frame");
 414
 415                 fill_buffer();
 416
 417                 monitor_subject_ << core::monitor::message("/host/path")        % filename_
 418                                                 << core::monitor::message("/host/width")        % width_
 419                                                 << core::monitor::message("/host/height")       % height_
 420                                                 << core::monitor::message("/host/fps")          % fps_
 421                                                 << core::monitor::message("/buffer")            % output_buffer_.size() % buffer_size_;
 422
 423                 return frame;
 424         }
 425
 426         core::constraints& pixel_constraints() override
 427         {
 428                 return constraints_;
 429         }
 430
 431         std::future<std::wstring> call(const std::vector<std::wstring>& params) override
 432         {
 433                 auto param = boost::algorithm::join(params, L" ");
 434
 435                 if (param == L"?")
 436                         return make_ready_future(std::wstring(has_renderer_ ? L"1" : L"0"));
 437
 438                 return executor_.begin_invoke([this, param]() -> std::wstring
 439                 {
 440                         try
 441                         {
 442                                 bool initialize_renderer = !renderer_;
 443
 444                                 if (initialize_renderer)
 445                                 {
 446                                         renderer_.reset(new flash_renderer(monitor_subject_, graph_, frame_factory_, filename_, width_, height_));
 447
 448                                         has_renderer_ = true;
 449                                 }
 450
 451                                 std::wstring result = param == L"start_rendering"
 452                                                 ? L"" : renderer_->call(param);
 453
 454                                 if (initialize_renderer)
 455                                 {
 456                                         do_fill_buffer(true);
 457                                 }
 458
 459                                 return result;
 460                         }
 461                         catch(...)
 462                         {
 463                                 CASPAR_LOG_CURRENT_EXCEPTION();
 464                                 renderer_.reset(nullptr);
 465                                 has_renderer_ = false;
 466                         }
 467
 468                         return L"";
 469                 }, task_priority::high_priority);
 470         }
 471
 472         std::wstring print() const override
 473         {
 474                 return L"flash[" + boost::filesystem::path(filename_).wstring() + L"|" + boost::lexical_cast<std::wstring>(fps_) + L"]";
 475         }
 476
 477         std::wstring name() const override
 478         {
 479                 return L"flash";
 480         }
 481
 482         boost::property_tree::wptree info() const override
 483         {
 484                 boost::property_tree::wptree info;
 485                 info.add(L"type", L"flash");
 486                 return info;
 487         }
 488
 489         core::monitor::subject& monitor_output()
 490         {
 491                 return monitor_subject_;
 492         }
 493
 494         // flash_producer
 495
 496         void fill_buffer()
 497         {
 498                 if (executor_.size() > 0)
 499                         return;
 500
 501                 executor_.begin_invoke([this]
 502                 {
 503                         do_fill_buffer(false);
 504                 });
 505         }
 506
 507         void do_fill_buffer(bool initial_buffer_fill)
 508         {
 509                 int nothing_rendered = 0;
 510                 const int MAX_NOTHING_RENDERED_RETRIES = 4;
 511
 512                 auto to_render = buffer_size_ - output_buffer_.size();
 513                 bool allow_faster_rendering = !initial_buffer_fill;
 514                 int rendered = 0;
 515
 516                 while (rendered < to_render)
 517                 {
 518                         bool was_rendered = next(allow_faster_rendering);
 519                         log_buffered();
 520
 521                         if (was_rendered)
 522                         {
 523                                 ++rendered;
 524                         }
 525                         else
 526                         {
 527                                 if (nothing_rendered++ < MAX_NOTHING_RENDERED_RETRIES)
 528                                 {
 529                                         // Flash player not ready with first frame, sleep to not busy-loop;
 530                                         boost::this_thread::sleep(boost::posix_time::milliseconds(10));
 531                                         boost::this_thread::yield();
 532                                 }
 533                                 else
 534                                         return;
 535                         }
 536
 537                         executor_.yield(task_priority::high_priority);
 538                 }
 539         }
 540
 541         bool next(bool allow_faster_rendering)
 542         {
 543                 if (!renderer_)
 544                         frame_buffer_.push(core::draw_frame::empty());
 545
 546                 if (frame_buffer_.empty())
 547                 {
 548                         if (abs(renderer_->fps() / 2.0 - format_desc_.fps) < 2.0) // flash == 2 * format -> interlace
 549                         {
 550                                 auto frame1 = render_frame(allow_faster_rendering);
 551
 552                                 if (frame1 != core::draw_frame::late())
 553                                 {
 554                                         auto frame2 = render_frame(allow_faster_rendering);
 555                                         frame_buffer_.push(core::draw_frame::interlace(frame1, frame2, format_desc_.field_mode));
 556                                 }
 557                         }
 558                         else if (abs(renderer_->fps() - format_desc_.fps / 2.0) < 2.0) // format == 2 * flash -> duplicate
 559                         {
 560                                 auto frame = render_frame(allow_faster_rendering);
 561
 562                                 if (frame != core::draw_frame::late())
 563                                 {
 564                                         frame_buffer_.push(frame);
 565                                         frame_buffer_.push(frame);
 566                                 }
 567                         }
 568                         else //if(abs(renderer_->fps() - format_desc_.fps) < 0.1) // format == flash -> simple
 569                         {
 570                                 auto frame = render_frame(allow_faster_rendering);
 571
 572                                 if (frame != core::draw_frame::late())
 573                                         frame_buffer_.push(frame);
 574                         }
 575
 576                         fps_.fetch_and_store(static_cast<int>(renderer_->fps()*100.0));
 577                         graph_->set_text(print());
 578
 579                         if (renderer_->is_empty())
 580                         {
 581                                 renderer_.reset();
 582                                 has_renderer_ = false;
 583                         }
 584                 }
 585
 586                 if (frame_buffer_.empty())
 587                 {
 588                         return false;
 589                 }
 590                 else
 591                 {
 592                         output_buffer_.push(std::move(frame_buffer_.front()));
 593                         frame_buffer_.pop();
 594                         return true;
 595                 }
 596         }
 597
 598         core::draw_frame render_frame(bool allow_faster_rendering)
 599         {
 600                 double sync;
 601
 602                 if (allow_faster_rendering)
 603                 {
 604                         double ratio = std::min(
 605                                         1.0,
 606                                         static_cast<double>(output_buffer_.size())
 607                                                         / static_cast<double>(std::max(1, buffer_size_ - 1)));
 608                         sync = 2 * ratio - ratio * ratio;
 609                 }
 610                 else
 611                 {
 612                         sync = 1.0;
 613                 }
 614
 615                 return renderer_->render_frame(sync);
 616         }
 617 };
 618
 619 spl::shared_ptr<core::frame_producer> create_producer(const core::frame_producer_dependencies& dependencies, const std::vector<std::wstring>& params)
 620 {
 621         auto template_host = get_template_host(dependencies.format_desc);
 622
 623         auto filename = env::template_folder() + L"\\" + template_host.filename;
 624
 625         if(!boost::filesystem::exists(filename))
 626                 CASPAR_THROW_EXCEPTION(file_not_found() << msg_info(L"Could not open flash movie " + filename));
 627
 628         return create_destroy_proxy(spl::make_shared<flash_producer>(dependencies.frame_factory, dependencies.format_desc, filename, template_host.width, template_host.height));
 629 }
 630
 631 void describe_swf_producer(core::help_sink& sink, const core::help_repository& repo)
 632 {
 633         sink.short_description(L"Plays flash files (.swf files).");
 634         sink.syntax(L"[swf_file:string]");
 635         sink.para()->text(L"Plays flash files (.swf files). The file should reside under the media folder.");
 636         sink.para()->text(L"Examples:");
 637         sink.example(L">> PLAY 1-10 folder/swf_file");
 638 }
 639
 640 spl::shared_ptr<core::frame_producer> create_swf_producer(const core::frame_producer_dependencies& dependencies, const std::vector<std::wstring>& params)
 641 {
 642         auto filename = env::media_folder() + L"\\" + params.at(0) + L".swf";
 643
 644         if (!boost::filesystem::exists(filename))
 645                 return core::frame_producer::empty();
 646
 647         swf_t::header_t header(filename);
 648
 649         auto producer = spl::make_shared<flash_producer>(
 650                         dependencies.frame_factory, dependencies.format_desc, filename, header.frame_width, header.frame_height);
 651
 652         producer->call({ L"start_rendering" }).get();
 653
 654         return create_destroy_proxy(producer);
 655 }
 656
 657 std::wstring find_template(const std::wstring& template_name)
 658 {
 659         if(boost::filesystem::exists(template_name + L".ft"))
 660                 return template_name + L".ft";
 661
 662         if(boost::filesystem::exists(template_name + L".ct"))
 663                 return template_name + L".ct";
 664
 665         if(boost::filesystem::exists(template_name + L".swf"))
 666                 return template_name + L".swf";
 667
 668         return L"";
 669 }
 670
 671 }}