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

   1 /*\r
   2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 *  This file is part of CasparCG.\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 */\r
  20 #include "image_scroll_producer.h"\r
  21 \r
  22 #include "../util/image_loader.h"\r
  23 \r
  24 #include <core/video_format.h>\r
  25 \r
  26 #include <core/producer/frame/basic_frame.h>\r
  27 #include <core/producer/frame/image_transform.h>\r
  28 #include <core/mixer/write_frame.h>\r
  29 \r
  30 #include <common/env.h>\r
  31 #include <common/memory/memclr.h>\r
  32 #include <common/exception/exceptions.h>\r
  33 \r
  34 #include <boost/assign.hpp>\r
  35 #include <boost/filesystem.hpp>\r
  36 #include <boost/foreach.hpp>\r
  37 \r
  38 #include <algorithm>\r
  39 \r
  40 using namespace boost::assign;\r
  41 \r
  42 namespace caspar {\r
  43 \r
  44 enum direction\r
  45 {\r
  46         down,\r
  47         right\r
  48 };\r
  49         \r
  50 struct image_scroll_producer : public core::frame_producer\r
  51 {       \r
  52         const std::wstring                                                      filename_;\r
  53         std::vector<safe_ptr<core::basic_frame>>        frames_;\r
  54         size_t                                                                          pixel_offset_;\r
  55         core::video_format_desc                                         format_desc_;\r
  56         size_t                                                                          width_;\r
  57         size_t                                                                          height_;\r
  58         size_t                                                                          speed_;\r
  59         \r
  60         explicit image_scroll_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, size_t speed) \r
  61                 : filename_(filename)\r
  62                 , pixel_offset_(0)\r
  63                 , format_desc_(frame_factory->get_video_format_desc())\r
  64                 , speed_(speed)\r
  65         {\r
  66                 auto bitmap = load_image(filename_);\r
  67                 FreeImage_FlipVertical(bitmap.get());\r
  68 \r
  69                 width_  = FreeImage_GetWidth(bitmap.get());\r
  70                 height_ = FreeImage_GetHeight(bitmap.get());\r
  71 \r
  72                 auto bytes = FreeImage_GetBits(bitmap.get());\r
  73                 int count = width_*height_*4;\r
  74 \r
  75                 if(height_ > format_desc_.height)\r
  76                 {\r
  77                         while(count > 0)\r
  78                         {\r
  79                                 auto frame = frame_factory->create_frame(reinterpret_cast<void*>(rand()), width_, format_desc_.height);\r
  80                                 if(count >= frame->image_data().size())\r
  81                                 {       \r
  82                                         std::copy_n(bytes + count - frame->image_data().size(), frame->image_data().size(), frame->image_data().begin());\r
  83                                         count -= frame->image_data().size();\r
  84                                 }\r
  85                                 else\r
  86                                 {\r
  87                                         fast_memclr(frame->image_data().begin(), frame->image_data().size());   \r
  88                                         std::copy_n(bytes, count, frame->image_data().begin() + format_desc_.size - count);\r
  89                                         count = 0;\r
  90                                 }\r
  91                         \r
  92                                 frame->commit();\r
  93                                 frames_.push_back(frame);\r
  94                         }\r
  95                 }\r
  96                 //else\r
  97                 //{\r
  98                 //      while(count > 0)\r
  99                 //      {\r
 100                 //              auto frame = frame_factory->create_frame(reinterpret_cast<void*>(rand()), format_desc_.width, height_);\r
 101                 //              if(count >= frame->image_data().size())\r
 102                 //              {       \r
 103                 //                      count -= frame->image_data().size();\r
 104                 //              }\r
 105                 //              else\r
 106                 //              {\r
 107                 //                      fast_memclr(frame->image_data().begin(), frame->image_data().size());   \r
 108                 //                      //std::copy_n(bytes, count, frame->image_data().begin() + format_desc_.size - count);\r
 109                 //                      count = 0;\r
 110                 //              }\r
 111                 //      \r
 112                 //              frame->commit();\r
 113                 //              frames_.push_back(frame);\r
 114                 //      }\r
 115                 //}\r
 116         }\r
 117         \r
 118         // frame_producer\r
 119 \r
 120         virtual safe_ptr<core::basic_frame> receive()\r
 121         {\r
 122                 pixel_offset_ += speed_;\r
 123 \r
 124                 if(frames_.empty())\r
 125                         return core::basic_frame::eof();\r
 126 \r
 127                 for(size_t n = 0; n < frames_.size(); ++n)\r
 128                         frames_[n]->get_image_transform().set_fill_translation(0.0, -0.5*(n+1) + pixel_offset_ * 0.5/static_cast<double>(format_desc_.height));\r
 129 \r
 130                 return core::basic_frame(frames_);\r
 131         }\r
 132                 \r
 133         virtual std::wstring print() const\r
 134         {\r
 135                 return L"image_scroll_producer[" + filename_ + L"]";\r
 136         }\r
 137 };\r
 138 \r
 139 safe_ptr<core::frame_producer> create_image_scroll_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 140 {\r
 141         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
 142         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 143         \r
 144         auto ext = std::find_if(extensions.begin(), extensions.end(), [&](const std::wstring& ex) -> bool\r
 145                 {                                       \r
 146                         return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename).replace_extension(ex));\r
 147                 });\r
 148 \r
 149         if(ext == extensions.end())\r
 150                 return core::frame_producer::empty();\r
 151         \r
 152         size_t speed = 0;\r
 153         auto speed_it = std::find(params.begin(), params.end(), L"SPEED");\r
 154         if(speed_it != params.end())\r
 155         {\r
 156                 if(++speed_it != params.end())\r
 157                         speed = boost::lexical_cast<int>(*speed_it);\r
 158         }\r
 159 \r
 160         if(speed == 0)\r
 161                 return core::frame_producer::empty();\r
 162 \r
 163         return make_safe<image_scroll_producer>(frame_factory, filename + L"." + *ext, speed);\r
 164 }\r
 165 \r
 166 \r
 167 }