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