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 // TODO: Refactor.\r
  21 // TODO: Looping.\r
  22 \r
  23 #include "image_scroll_producer.h"\r
  24 \r
  25 #include "../util/image_loader.h"\r
  26 \r
  27 #include <core/video_format.h>\r
  28 \r
  29 #include <core/producer/frame/basic_frame.h>\r
  30 #include <core/producer/frame/frame_factory.h>\r
  31 #include <core/producer/frame/frame_transform.h>\r
  32 #include <core/mixer/write_frame.h>\r
  33 \r
  34 #include <common/env.h>\r
  35 #include <common/memory/memclr.h>\r
  36 #include <common/exception/exceptions.h>\r
  37 \r
  38 #include <boost/assign.hpp>\r
  39 #include <boost/filesystem.hpp>\r
  40 #include <boost/foreach.hpp>\r
  41 #include <boost/lexical_cast.hpp>\r
  42 \r
  43 #include <algorithm>\r
  44 #include <array>\r
  45 \r
  46 using namespace boost::assign;\r
  47 \r
  48 namespace caspar { namespace image {\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         core::video_format_desc                                         format_desc_;\r
  55         size_t                                                                          width_;\r
  56         size_t                                                                          height_;\r
  57 \r
  58         int                                                                                     delta_;\r
  59         int                                                                                     speed_;\r
  60 \r
  61         std::array<double, 2>                                           start_offset_;\r
  62 \r
  63         safe_ptr<core::basic_frame>                                     last_frame_;\r
  64         \r
  65         explicit image_scroll_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, int speed) \r
  66                 : filename_(filename)\r
  67                 , delta_(0)\r
  68                 , format_desc_(frame_factory->get_video_format_desc())\r
  69                 , speed_(speed)\r
  70                 , last_frame_(core::basic_frame::empty())\r
  71         {\r
  72                 start_offset_.assign(0.0);\r
  73 \r
  74                 auto bitmap = load_image(filename_);\r
  75                 FreeImage_FlipVertical(bitmap.get());\r
  76 \r
  77                 width_  = FreeImage_GetWidth(bitmap.get());\r
  78                 height_ = FreeImage_GetHeight(bitmap.get());\r
  79 \r
  80                 auto bytes = FreeImage_GetBits(bitmap.get());\r
  81                 int count = width_*height_*4;\r
  82 \r
  83                 if(height_ > format_desc_.height)\r
  84                 {\r
  85                         while(count > 0)\r
  86                         {\r
  87                                 auto frame = frame_factory->create_frame(reinterpret_cast<void*>(rand()), width_, format_desc_.height);\r
  88                                 if(count >= frame->image_data().size())\r
  89                                 {       \r
  90                                         std::copy_n(bytes + count - frame->image_data().size(), frame->image_data().size(), frame->image_data().begin());\r
  91                                         count -= frame->image_data().size();\r
  92                                 }\r
  93                                 else\r
  94                                 {\r
  95                                         fast_memclr(frame->image_data().begin(), frame->image_data().size());   \r
  96                                         std::copy_n(bytes, count, frame->image_data().begin() + format_desc_.size - count);\r
  97                                         count = 0;\r
  98                                 }\r
  99                         \r
 100                                 frame->commit();\r
 101                                 frames_.push_back(frame);\r
 102                         }\r
 103                         \r
 104                         if(speed_ < 0.0)\r
 105                         {\r
 106                                 auto offset = format_desc_.height - (height_ % format_desc_.height);\r
 107                                 auto offset2 = offset * 0.5/static_cast<double>(format_desc_.height);\r
 108                                 start_offset_[1] = (std::ceil(static_cast<double>(height_) / static_cast<double>(format_desc_.height)) + 1.0) * 0.5 - offset2;// - 1.5;\r
 109                         }\r
 110                 }\r
 111                 else\r
 112                 {\r
 113                         int i = 0;\r
 114                         while(count > 0)\r
 115                         {\r
 116                                 auto frame = frame_factory->create_frame(reinterpret_cast<void*>(rand()), format_desc_.width, height_);\r
 117                                 if(count >= frame->image_data().size())\r
 118                                 {       \r
 119                                         for(size_t y = 0; y < height_; ++y)\r
 120                                                 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
 121                                         \r
 122                                         ++i;\r
 123                                         count -= frame->image_data().size();\r
 124                                 }\r
 125                                 else\r
 126                                 {\r
 127                                         fast_memclr(frame->image_data().begin(), frame->image_data().size());   \r
 128                                         int width2 = width_ % format_desc_.width;\r
 129                                         for(size_t y = 0; y < height_; ++y)\r
 130                                                 std::copy_n(bytes + i * format_desc_.width*4 + y * width_*4, width2*4, frame->image_data().begin() + y * format_desc_.width*4);\r
 131 \r
 132                                         count = 0;\r
 133                                 }\r
 134                         \r
 135                                 frame->commit();\r
 136                                 frames_.push_back(frame);\r
 137                         }\r
 138 \r
 139                         std::reverse(frames_.begin(), frames_.end());\r
 140 \r
 141                         if(speed_ > 0.0)\r
 142                         {\r
 143                                 auto offset = format_desc_.width - (width_ % format_desc_.width);\r
 144                                 start_offset_[0] = offset * 0.5/static_cast<double>(format_desc_.width);\r
 145                         }\r
 146                         else\r
 147                         {\r
 148                                 start_offset_[0] = (std::ceil(static_cast<double>(width_) / static_cast<double>(format_desc_.width)) + 1.0) * 0.5;// - 1.5;\r
 149                         }\r
 150                 }\r
 151         }\r
 152         \r
 153         // frame_producer\r
 154 \r
 155         virtual safe_ptr<core::basic_frame> receive(int)\r
 156         {               \r
 157                 delta_ += speed_;\r
 158 \r
 159                 if(frames_.empty())\r
 160                         return core::basic_frame::eof();\r
 161                 \r
 162                 if(height_ > format_desc_.height)\r
 163                 {\r
 164                         if(static_cast<size_t>(std::abs(delta_)) >= height_ - format_desc_.height)\r
 165                                 return core::basic_frame::eof();\r
 166 \r
 167                         for(size_t n = 0; n < frames_.size(); ++n)\r
 168                         {\r
 169                                 frames_[n]->get_frame_transform().fill_translation[0] = start_offset_[0];\r
 170                                 frames_[n]->get_frame_transform().fill_translation[1] = start_offset_[1] - (n+1) + delta_ * 0.5/static_cast<double>(format_desc_.height);\r
 171                         }\r
 172                 }\r
 173                 else\r
 174                 {\r
 175                         if(static_cast<size_t>(std::abs(delta_)) >= width_ - format_desc_.width)\r
 176                                 return core::basic_frame::eof();\r
 177 \r
 178                         for(size_t n = 0; n < frames_.size(); ++n)\r
 179                         {\r
 180                                 frames_[n]->get_frame_transform().fill_translation[0] = start_offset_[0] - (n+1) + delta_ * 0.5/static_cast<double>(format_desc_.width);                                \r
 181                                 frames_[n]->get_frame_transform().fill_translation[1] = start_offset_[1];\r
 182                         }\r
 183                 }\r
 184 \r
 185                 return last_frame_ = core::basic_frame(frames_);\r
 186         }\r
 187 \r
 188         virtual safe_ptr<core::basic_frame> last_frame() const\r
 189         {\r
 190                 return last_frame_;\r
 191         }\r
 192                 \r
 193         virtual std::wstring print() const\r
 194         {\r
 195                 return L"image_scroll_producer[" + filename_ + L"]";\r
 196         }\r
 197 \r
 198         virtual int64_t nb_frames() const \r
 199         {\r
 200                 if(height_ > format_desc_.height)\r
 201                 {\r
 202                         auto length = (height_ - format_desc_.height);\r
 203                         return length/std::abs(speed_);// + length % std::abs(delta_));\r
 204                 }\r
 205                 else\r
 206                 {\r
 207                         auto length = (width_ - format_desc_.width);\r
 208                         auto result = length/std::abs(speed_);// + length % std::abs(delta_));\r
 209                         return result;\r
 210                 }\r
 211         }\r
 212 };\r
 213 \r
 214 safe_ptr<core::frame_producer> create_scroll_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 215 {\r
 216         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
 217         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 218         \r
 219         auto ext = std::find_if(extensions.begin(), extensions.end(), [&](const std::wstring& ex) -> bool\r
 220                 {                                       \r
 221                         return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename).replace_extension(ex));\r
 222                 });\r
 223 \r
 224         if(ext == extensions.end())\r
 225                 return core::frame_producer::empty();\r
 226         \r
 227         size_t speed = 0;\r
 228         auto speed_it = std::find(params.begin(), params.end(), L"SPEED");\r
 229         if(speed_it != params.end())\r
 230         {\r
 231                 if(++speed_it != params.end())\r
 232                         speed = boost::lexical_cast<int>(*speed_it);\r
 233         }\r
 234 \r
 235         if(speed == 0)\r
 236                 return core::frame_producer::empty();\r
 237 \r
 238         return make_safe<image_scroll_producer>(frame_factory, filename + L"." + *ext, speed);\r
 239 }\r
 240 \r
 241 }}