git.sesse.net Git - casparcg/blob - modules/image/producer/image_producer.cpp

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\r
   5 *\r
   6 * CasparCG is free software: you can redistribute it and/or modify\r
   7 * it under the terms of the GNU General Public License as published by\r
   8 * the Free Software Foundation, either version 3 of the License, or\r
   9 * (at your option) any later version.\r
  10 *\r
  11 * CasparCG is distributed in the hope that it will be useful,\r
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14 * GNU General Public License for more details.\r
  15 *\r
  16 * You should have received a copy of the GNU General Public License\r
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
  18 *\r
  19 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 #include "image_producer.h"\r
  23 \r
  24 #include "../util/image_loader.h"\r
  25 \r
  26 #include <core/video_format.h>\r
  27 \r
  28 #include <core/producer/frame_producer.h>\r
  29 #include <core/frame/frame.h>\r
  30 #include <core/frame/draw_frame.h>\r
  31 #include <core/frame/frame_factory.h>\r
  32 #include <core/frame/pixel_format.h>\r
  33 #include <core/monitor/monitor.h>\r
  34 \r
  35 #include <common/env.h>\r
  36 #include <common/log.h>\r
  37 #include <common/array.h>\r
  38 \r
  39 #include <boost/assign.hpp>\r
  40 #include <boost/filesystem.hpp>\r
  41 #include <boost/property_tree/ptree.hpp>\r
  42 \r
  43 #include <algorithm>\r
  44 \r
  45 using namespace boost::assign;\r
  46 \r
  47 namespace caspar { namespace image {\r
  48 \r
  49 struct image_producer : public core::frame_producer\r
  50 {       \r
  51         monitor::basic_subject  event_subject_;\r
  52         const std::wstring              filename_;\r
  53         core::draw_frame                frame_;\r
  54         \r
  55         explicit image_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& filename) \r
  56                 : filename_(filename)\r
  57                 , frame_(core::draw_frame::empty())     \r
  58         {\r
  59                 auto bitmap = load_image(filename_);\r
  60                 FreeImage_FlipVertical(bitmap.get());\r
  61                 \r
  62                 core::pixel_format_desc desc = core::pixel_format::bgra;\r
  63                 desc.planes.push_back(core::pixel_format_desc::plane(FreeImage_GetWidth(bitmap.get()), FreeImage_GetHeight(bitmap.get()), 4));\r
  64                 auto frame = frame_factory->create_frame(this, desc);\r
  65 \r
  66                 std::copy_n(FreeImage_GetBits(bitmap.get()), frame.image_data(0).size(), frame.image_data(0).begin());\r
  67                 frame_ = core::draw_frame(std::move(frame));\r
  68 \r
  69                 CASPAR_LOG(info) << print() << L" Initialized";\r
  70         }\r
  71         \r
  72         // frame_producer\r
  73 \r
  74         virtual core::draw_frame receive(int) override\r
  75         {\r
  76                 event_subject_ << monitor::event("file/path") % filename_;\r
  77 \r
  78                 return frame_;\r
  79         }\r
  80 \r
  81         virtual core::draw_frame last_frame() const override\r
  82         {\r
  83                 return frame_;\r
  84         }\r
  85                 \r
  86         virtual std::wstring print() const override\r
  87         {\r
  88                 return L"image_producer[" + filename_ + L"]";\r
  89         }\r
  90 \r
  91         virtual std::wstring name() const override\r
  92         {\r
  93                 return L"image";\r
  94         }\r
  95 \r
  96         virtual boost::property_tree::wptree info() const override\r
  97         {\r
  98                 boost::property_tree::wptree info;\r
  99                 info.add(L"type", L"image");\r
 100                 info.add(L"filename", filename_);\r
 101                 return info;\r
 102         }\r
 103 \r
 104         virtual void subscribe(const monitor::observable::observer_ptr& o) override                                                                                                                     \r
 105         {\r
 106                 return event_subject_.subscribe(o);\r
 107         }\r
 108 \r
 109         virtual void unsubscribe(const monitor::observable::observer_ptr& o) override           \r
 110         {\r
 111                 return event_subject_.unsubscribe(o);\r
 112         }\r
 113 };\r
 114 \r
 115 spl::shared_ptr<core::frame_producer> create_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const core::video_format_desc& format_desc, const std::vector<std::wstring>& params)\r
 116 {\r
 117         static const std::vector<std::wstring> extensions = list_of(L".png")(L".tga")(L".bmp")(L".jpg")(L".jpeg")(L".gif")(L".tiff")(L".tif")(L".jp2")(L".jpx")(L".j2k")(L".j2c");\r
 118         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 119         \r
 120         auto ext = std::find_if(extensions.begin(), extensions.end(), [&](const std::wstring& ex) -> bool\r
 121                 {                       \r
 122                         return boost::filesystem::is_regular_file(boost::filesystem::path(filename).replace_extension(ex));\r
 123                 });\r
 124 \r
 125         if(ext == extensions.end())\r
 126                 return core::frame_producer::empty();\r
 127 \r
 128         return spl::make_shared<image_producer>(frame_factory, filename + *ext);\r
 129 }\r
 130 \r
 131 \r
 132 }}