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