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                                                                          delta_;\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                 , delta_(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                         int i = 0;\r
  99                         while(count > 0)\r
 100                         {\r
 101                                 auto frame = frame_factory->create_frame(reinterpret_cast<void*>(rand()), format_desc_.width, height_);\r
 102                                 if(count >= frame->image_data().size())\r
 103                                 {       \r
 104                                         for(size_t y = 0; y < height_; ++y)\r
 105                                                 std::copy_n(bytes + i * format_desc_.width*4 + y * width_*4, format_desc_.width*4, frame->image_data().begin() + y * format_desc_.width*4);\r
 106                                         \r
 107                                         ++i;\r
 108                                         count -= frame->image_data().size();\r
 109                                 }\r
 110                                 else\r
 111                                 {\r
 112                                         //fast_memclr(frame->image_data().begin(), frame->image_data().size()); \r
 113                                         //int width2 = width_ % format_desc_.width;\r
 114                                         //for(size_t y = 0; y < height_; ++y)\r
 115                                         //      std::copy_n(bytes + i * format_desc_.size*4 + y * width2*4, format_desc_.width*4, frame->image_data().begin() + y *  format_desc_.width*4);\r
 116 \r
 117                                         count = 0;\r
 118                                 }\r
 119                         \r
 120                                 frame->commit();\r
 121                                 frames_.push_back(frame);\r
 122                         }\r
 123                 }\r
 124 \r
 125                 std::reverse(frames_.begin(), frames_.end());\r
 126         }\r
 127         \r
 128         // frame_producer\r
 129 \r
 130         virtual safe_ptr<core::basic_frame> receive()\r
 131         {\r
 132                 delta_ += speed_;\r
 133 \r
 134                 if(frames_.empty())\r
 135                         return core::basic_frame::eof();\r
 136                 \r
 137                 if(height_ > format_desc_.height)\r
 138                 {\r
 139                         for(size_t n = 0; n < frames_.size(); ++n)\r
 140                                 frames_[n]->get_image_transform().set_fill_translation(0.0, -0.5*(n+1) + delta_ * 0.5/static_cast<double>(format_desc_.height));\r
 141                 }\r
 142                 else\r
 143                 {\r
 144                         for(size_t n = 0; n < frames_.size(); ++n)\r
 145                                 frames_[n]->get_image_transform().set_fill_translation(-0.5*(n+1) + delta_ * 0.5/static_cast<double>(format_desc_.height), 0.0);\r
 146                 }\r
 147 \r
 148                 return core::basic_frame(frames_);\r
 149         }\r
 150                 \r
 151         virtual std::wstring print() const\r
 152         {\r
 153                 return L"image_scroll_producer[" + filename_ + L"]";\r
 154         }\r
 155 };\r
 156 \r
 157 safe_ptr<core::frame_producer> create_image_scroll_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 158 {\r
 159         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
 160         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 161         \r
 162         auto ext = std::find_if(extensions.begin(), extensions.end(), [&](const std::wstring& ex) -> bool\r
 163                 {                                       \r
 164                         return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename).replace_extension(ex));\r
 165                 });\r
 166 \r
 167         if(ext == extensions.end())\r
 168                 return core::frame_producer::empty();\r
 169         \r
 170         size_t speed = 0;\r
 171         auto speed_it = std::find(params.begin(), params.end(), L"SPEED");\r
 172         if(speed_it != params.end())\r
 173         {\r
 174                 if(++speed_it != params.end())\r
 175                         speed = boost::lexical_cast<int>(*speed_it);\r
 176         }\r
 177 \r
 178         if(speed == 0)\r
 179                 return core::frame_producer::empty();\r
 180 \r
 181         return make_safe<image_scroll_producer>(frame_factory, filename + L"." + *ext, speed);\r
 182 }\r
 183 \r
 184 \r
 185 }