git.sesse.net Git - casparcg/blob - modules/image/producer/image_scroll_producer.cpp

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\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 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 #include "image_scroll_producer.h"\r
  23 \r
  24 #include "../util/image_loader.h"\r
  25 \r
  26 #include <core/video_format.h>\r
  27 \r
  28 #include <core/frame/frame.h>\r
  29 #include <core/frame/draw_frame.h>\r
  30 #include <core/frame/frame_factory.h>\r
  31 #include <core/frame/frame_transform.h>\r
  32 #include <core/frame/pixel_format.h>\r
  33 \r
  34 #include <common/env.h>\r
  35 #include <common/log.h>\r
  36 #include <common/except.h>\r
  37 #include <common/memory/array.h>\r
  38 \r
  39 #include <boost/assign.hpp>\r
  40 #include <boost/filesystem.hpp>\r
  41 #include <boost/foreach.hpp>\r
  42 #include <boost/lexical_cast.hpp>\r
  43 #include <boost/property_tree/ptree.hpp>\r
  44 \r
  45 #include <algorithm>\r
  46 #include <array>\r
  47 \r
  48 using namespace boost::assign;\r
  49 \r
  50 namespace caspar { namespace image {\r
  51                 \r
  52 struct image_scroll_producer : public core::frame_producer\r
  53 {       \r
  54         const std::wstring                              filename_;\r
  55         std::vector<core::draw_frame>   frames_;\r
  56         core::video_format_desc                 format_desc_;\r
  57         int                                                             width_;\r
  58         int                                                             height_;\r
  59 \r
  60         int                                                             delta_;\r
  61         int                                                             speed_;\r
  62 \r
  63         std::array<double, 2>                   start_offset_;\r
  64 \r
  65         core::draw_frame                                last_frame_;\r
  66 \r
  67         explicit image_scroll_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const core::video_format_desc& format_desc, const std::wstring& filename, int speed) \r
  68                 : filename_(filename)\r
  69                 , delta_(0)\r
  70                 , format_desc_(format_desc)\r
  71                 , speed_(speed)\r
  72                 , last_frame_(core::draw_frame::empty())\r
  73         {\r
  74                 start_offset_.assign(0.0);\r
  75 \r
  76                 auto bitmap = load_image(filename_);\r
  77                 FreeImage_FlipVertical(bitmap.get());\r
  78 \r
  79                 width_  = FreeImage_GetWidth(bitmap.get());\r
  80                 height_ = FreeImage_GetHeight(bitmap.get());\r
  81 \r
  82                 auto bytes = FreeImage_GetBits(bitmap.get());\r
  83                 auto count = width_*height_*4;\r
  84 \r
  85                 if(height_ > format_desc_.height)\r
  86                 {\r
  87                         while(count > 0)\r
  88                         {\r
  89                                 core::pixel_format_desc desc = core::pixel_format::bgra;\r
  90                                 desc.planes.push_back(core::pixel_format_desc::plane(width_, format_desc_.height, 4));\r
  91                                 auto frame = frame_factory->create_frame(reinterpret_cast<void*>(rand()), desc);\r
  92 \r
  93                                 if(count >= frame.image_data(0).size())\r
  94                                 {       \r
  95                                         std::copy_n(bytes + count - frame.image_data(0).size(), frame.image_data(0).size(), frame.image_data(0).begin());\r
  96                                         count -= static_cast<int>(frame.image_data(0).size());\r
  97                                 }\r
  98                                 else\r
  99                                 {\r
 100                                         memset(frame.image_data(0).begin(), 0, frame.image_data(0).size());     \r
 101                                         std::copy_n(bytes, count, frame.image_data(0).begin() + format_desc_.size - count);\r
 102                                         count = 0;\r
 103                                 }\r
 104                         \r
 105                                 frames_.push_back(core::draw_frame(std::move(frame)));\r
 106                         }\r
 107                         \r
 108                         if(speed_ < 0.0)\r
 109                         {\r
 110                                 auto offset = format_desc_.height - (height_ % format_desc_.height);\r
 111                                 auto offset2 = offset * 0.5/static_cast<double>(format_desc_.height);\r
 112                                 start_offset_[1] = (std::ceil(static_cast<double>(height_) / static_cast<double>(format_desc_.height)) + 1.0) * 0.5 - offset2;// - 1.5;\r
 113                         }\r
 114                 }\r
 115                 else\r
 116                 {\r
 117                         int i = 0;\r
 118                         while(count > 0)\r
 119                         {\r
 120                                 core::pixel_format_desc desc = core::pixel_format::bgra;\r
 121                                 desc.planes.push_back(core::pixel_format_desc::plane(format_desc_.width, height_, 4));\r
 122                                 auto frame = frame_factory->create_frame(reinterpret_cast<void*>(rand()), desc);\r
 123                                 if(count >= frame.image_data(0).size())\r
 124                                 {       \r
 125                                         for(int y = 0; y < height_; ++y)\r
 126                                                 std::copy_n(bytes + i * format_desc_.width*4 + y * width_*4, format_desc_.width*4, frame.image_data(0).begin() + y * format_desc_.width*4);\r
 127                                         \r
 128                                         ++i;\r
 129                                         count -= static_cast<int>(frame.image_data(0).size());\r
 130                                 }\r
 131                                 else\r
 132                                 {\r
 133                                         memset(frame.image_data(0).begin(), 0, frame.image_data(0).size());     \r
 134                                         auto width2 = width_ % format_desc_.width;\r
 135                                         for(int y = 0; y < height_; ++y)\r
 136                                                 std::copy_n(bytes + i * format_desc_.width*4 + y * width_*4, width2*4, frame.image_data(0).begin() + y * format_desc_.width*4);\r
 137 \r
 138                                         count = 0;\r
 139                                 }\r
 140                         \r
 141                                 frames_.push_back(core::draw_frame(std::move(frame)));\r
 142                         }\r
 143 \r
 144                         std::reverse(frames_.begin(), frames_.end());\r
 145 \r
 146                         if(speed_ > 0.0)\r
 147                         {\r
 148                                 auto offset = format_desc_.width - (width_ % format_desc_.width);\r
 149                                 start_offset_[0] = offset * 0.5/static_cast<double>(format_desc_.width);\r
 150                         }\r
 151                         else\r
 152                         {\r
 153                                 start_offset_[0] = (std::ceil(static_cast<double>(width_) / static_cast<double>(format_desc_.width)) + 1.0) * 0.5;// - 1.5;\r
 154                         }\r
 155                 }\r
 156 \r
 157                 CASPAR_LOG(info) << print() << L" Initialized";\r
 158         }\r
 159         \r
 160         // frame_producer\r
 161 \r
 162         virtual core::draw_frame receive(int) override\r
 163         {               \r
 164                 delta_ += speed_;\r
 165 \r
 166                 if(frames_.empty())\r
 167                         return core::draw_frame::eof();\r
 168                 \r
 169                 if(height_ > format_desc_.height)\r
 170                 {\r
 171                         if(static_cast<int>(std::abs(delta_)) >= height_ - format_desc_.height)\r
 172                                 return core::draw_frame::eof();\r
 173 \r
 174                         for(int n = 0; n < frames_.size(); ++n)\r
 175                         {\r
 176                                 frames_[n].transform().image_transform.fill_translation[0] = start_offset_[0];\r
 177                                 frames_[n].transform().image_transform.fill_translation[1] =    start_offset_[1] - (n+1) + delta_ * 0.5/static_cast<double>(format_desc_.height);\r
 178                         }\r
 179                 }\r
 180                 else\r
 181                 {\r
 182                         if(static_cast<int>(std::abs(delta_)) >= width_ - format_desc_.width)\r
 183                                 return core::draw_frame::eof();\r
 184 \r
 185                         for(int n = 0; n < frames_.size(); ++n)\r
 186                         {\r
 187                                 frames_[n].transform().image_transform.fill_translation[0] = start_offset_[0] - (n+1) + delta_ * 0.5/static_cast<double>(format_desc_.width);                           \r
 188                                 frames_[n].transform().image_transform.fill_translation[1] = start_offset_[1];\r
 189                         }\r
 190                 }\r
 191 \r
 192                 return last_frame_ = core::draw_frame(frames_);\r
 193         }\r
 194 \r
 195         virtual core::draw_frame last_frame() const override\r
 196         {\r
 197                 return core::draw_frame::still(last_frame_);\r
 198         }\r
 199                         \r
 200         virtual std::wstring print() const override\r
 201         {\r
 202                 return L"image_scroll_producer[" + filename_ + L"]";\r
 203         }\r
 204 \r
 205         virtual std::wstring name() const override\r
 206         {\r
 207                 return L"image-scroll";\r
 208         }\r
 209 \r
 210         virtual boost::property_tree::wptree info() const override\r
 211         {\r
 212                 boost::property_tree::wptree info;\r
 213                 info.add(L"type", L"image-scroll");\r
 214                 info.add(L"filename", filename_);\r
 215                 return info;\r
 216         }\r
 217 \r
 218         virtual uint32_t nb_frames() const override\r
 219         {\r
 220                 if(height_ > format_desc_.height)\r
 221                 {\r
 222                         auto length = (height_ - format_desc_.height);\r
 223                         return length/std::abs(speed_);// + length % std::abs(delta_));\r
 224                 }\r
 225                 else\r
 226                 {\r
 227                         auto length = (width_ - format_desc_.width);\r
 228                         auto result = length/std::abs(speed_);// + length % std::abs(delta_));\r
 229                         return result;\r
 230                 }\r
 231         }\r
 232 };\r
 233 \r
 234 spl::shared_ptr<core::frame_producer> create_scroll_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const core::video_format_desc& format_desc, const std::vector<std::wstring>& params)\r
 235 {\r
 236         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
 237         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 238         \r
 239         auto ext = std::find_if(extensions.begin(), extensions.end(), [&](const std::wstring& ex) -> bool\r
 240                 {                                       \r
 241                         return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename).replace_extension(ex));\r
 242                 });\r
 243 \r
 244         if(ext == extensions.end())\r
 245                 return core::frame_producer::empty();\r
 246         \r
 247         int speed = 0;\r
 248         auto speed_it = std::find(params.begin(), params.end(), L"SPEED");\r
 249         if(speed_it != params.end())\r
 250         {\r
 251                 if(++speed_it != params.end())\r
 252                         speed = boost::lexical_cast<int>(*speed_it);\r
 253         }\r
 254 \r
 255         if(speed == 0)\r
 256                 return core::frame_producer::empty();\r
 257 \r
 258         return spl::make_shared<image_scroll_producer>(frame_factory, format_desc, filename + L"." + *ext, speed);\r
 259 }\r
 260 \r
 261 }}