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