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 #include <core/monitor/monitor.h>\r
  34 \r
  35 #include <common/env.h>\r
  36 #include <common/log.h>\r
  37 #include <common/except.h>\r
  38 #include <common/array.h>\r
  39 \r
  40 #include <boost/assign.hpp>\r
  41 #include <boost/filesystem.hpp>\r
  42 #include <boost/foreach.hpp>\r
  43 #include <boost/lexical_cast.hpp>\r
  44 #include <boost/property_tree/ptree.hpp>\r
  45 \r
  46 #include <algorithm>\r
  47 #include <array>\r
  48 \r
  49 using namespace boost::assign;\r
  50 \r
  51 namespace caspar { namespace image {\r
  52                 \r
  53 struct image_scroll_producer : public core::frame_producer\r
  54 {       \r
  55         monitor::basic_subject                  event_subject_;\r
  56 \r
  57         const std::wstring                              filename_;\r
  58         std::vector<core::draw_frame>   frames_;\r
  59         core::video_format_desc                 format_desc_;\r
  60         int                                                             width_;\r
  61         int                                                             height_;\r
  62 \r
  63         int                                                             delta_;\r
  64         int                                                             speed_;\r
  65 \r
  66         std::array<double, 2>                   start_offset_;\r
  67 \r
  68         core::draw_frame                                last_frame_;\r
  69 \r
  70         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
  71                 : filename_(filename)\r
  72                 , delta_(0)\r
  73                 , format_desc_(format_desc)\r
  74                 , speed_(speed)\r
  75                 , last_frame_(core::draw_frame::empty())\r
  76         {\r
  77                 start_offset_.assign(0.0);\r
  78 \r
  79                 auto bitmap = load_image(filename_);\r
  80                 FreeImage_FlipVertical(bitmap.get());\r
  81 \r
  82                 width_  = FreeImage_GetWidth(bitmap.get());\r
  83                 height_ = FreeImage_GetHeight(bitmap.get());\r
  84 \r
  85                 auto bytes = FreeImage_GetBits(bitmap.get());\r
  86                 auto count = width_*height_*4;\r
  87 \r
  88                 if(height_ > format_desc_.height)\r
  89                 {\r
  90                         while(count > 0)\r
  91                         {\r
  92                                 core::pixel_format_desc desc = core::pixel_format::bgra;\r
  93                                 desc.planes.push_back(core::pixel_format_desc::plane(width_, format_desc_.height, 4));\r
  94                                 auto frame = frame_factory->create_frame(reinterpret_cast<void*>(rand()), desc);\r
  95 \r
  96                                 if(count >= frame.image_data(0).size())\r
  97                                 {       \r
  98                                         std::copy_n(bytes + count - frame.image_data(0).size(), frame.image_data(0).size(), frame.image_data(0).begin());\r
  99                                         count -= static_cast<int>(frame.image_data(0).size());\r
 100                                 }\r
 101                                 else\r
 102                                 {\r
 103                                         memset(frame.image_data(0).begin(), 0, frame.image_data(0).size());     \r
 104                                         std::copy_n(bytes, count, frame.image_data(0).begin() + format_desc_.size - count);\r
 105                                         count = 0;\r
 106                                 }\r
 107                         \r
 108                                 frames_.push_back(core::draw_frame(std::move(frame)));\r
 109                         }\r
 110                         \r
 111                         if(speed_ < 0.0)\r
 112                         {\r
 113                                 auto offset = format_desc_.height - (height_ % format_desc_.height);\r
 114                                 auto offset2 = offset * 0.5/static_cast<double>(format_desc_.height);\r
 115                                 start_offset_[1] = (std::ceil(static_cast<double>(height_) / static_cast<double>(format_desc_.height)) + 1.0) * 0.5 - offset2;// - 1.5;\r
 116                         }\r
 117                 }\r
 118                 else\r
 119                 {\r
 120                         int i = 0;\r
 121                         while(count > 0)\r
 122                         {\r
 123                                 core::pixel_format_desc desc = core::pixel_format::bgra;\r
 124                                 desc.planes.push_back(core::pixel_format_desc::plane(format_desc_.width, height_, 4));\r
 125                                 auto frame = frame_factory->create_frame(reinterpret_cast<void*>(rand()), desc);\r
 126                                 if(count >= frame.image_data(0).size())\r
 127                                 {       \r
 128                                         for(int y = 0; y < height_; ++y)\r
 129                                                 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
 130                                         \r
 131                                         ++i;\r
 132                                         count -= static_cast<int>(frame.image_data(0).size());\r
 133                                 }\r
 134                                 else\r
 135                                 {\r
 136                                         memset(frame.image_data(0).begin(), 0, frame.image_data(0).size());     \r
 137                                         auto width2 = width_ % format_desc_.width;\r
 138                                         for(int y = 0; y < height_; ++y)\r
 139                                                 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
 140 \r
 141                                         count = 0;\r
 142                                 }\r
 143                         \r
 144                                 frames_.push_back(core::draw_frame(std::move(frame)));\r
 145                         }\r
 146 \r
 147                         std::reverse(frames_.begin(), frames_.end());\r
 148 \r
 149                         if(speed_ > 0.0)\r
 150                         {\r
 151                                 auto offset = format_desc_.width - (width_ % format_desc_.width);\r
 152                                 start_offset_[0] = offset * 0.5/static_cast<double>(format_desc_.width);\r
 153                         }\r
 154                         else\r
 155                         {\r
 156                                 start_offset_[0] = (std::ceil(static_cast<double>(width_) / static_cast<double>(format_desc_.width)) + 1.0) * 0.5;// - 1.5;\r
 157                         }\r
 158                 }\r
 159 \r
 160                 CASPAR_LOG(info) << print() << L" Initialized";\r
 161         }\r
 162         \r
 163         // frame_producer\r
 164 \r
 165         core::draw_frame receive() override\r
 166         {               \r
 167                 delta_ += speed_;\r
 168 \r
 169                 if(frames_.empty())\r
 170                         return last_frame();\r
 171                 \r
 172                 if(height_ > format_desc_.height)\r
 173                 {\r
 174                         if(static_cast<int>(std::abs(delta_)) >= height_ - format_desc_.height)\r
 175                                 return last_frame();\r
 176 \r
 177                         for(int n = 0; n < frames_.size(); ++n)\r
 178                         {\r
 179                                 frames_[n].transform().image_transform.fill_translation[0] = start_offset_[0];\r
 180                                 frames_[n].transform().image_transform.fill_translation[1] =    start_offset_[1] - (n+1) + delta_ * 0.5/static_cast<double>(format_desc_.height);\r
 181                         }\r
 182                 }\r
 183                 else\r
 184                 {\r
 185                         if(static_cast<int>(std::abs(delta_)) >= width_ - format_desc_.width)\r
 186                                 return last_frame();\r
 187 \r
 188                         for(int n = 0; n < frames_.size(); ++n)\r
 189                         {\r
 190                                 frames_[n].transform().image_transform.fill_translation[0] = start_offset_[0] - (n+1) + delta_ * 0.5/static_cast<double>(format_desc_.width);                           \r
 191                                 frames_[n].transform().image_transform.fill_translation[1] = start_offset_[1];\r
 192                         }\r
 193                 }\r
 194                 \r
 195                 event_subject_ << monitor::event("file/path") % filename_\r
 196                                            << monitor::event("delta") % delta_ \r
 197                                            << monitor::event("speed") % speed_;\r
 198 \r
 199                 return last_frame_ = core::draw_frame(frames_);\r
 200         }\r
 201 \r
 202         core::draw_frame last_frame() const override\r
 203         {\r
 204                 return core::draw_frame::still(last_frame_);\r
 205         }\r
 206                         \r
 207         std::wstring print() const override\r
 208         {\r
 209                 return L"image_scroll_producer[" + filename_ + L"]";\r
 210         }\r
 211 \r
 212         std::wstring name() const override\r
 213         {\r
 214                 return L"image-scroll";\r
 215         }\r
 216 \r
 217         boost::property_tree::wptree info() const override\r
 218         {\r
 219                 boost::property_tree::wptree info;\r
 220                 info.add(L"type", L"image-scroll");\r
 221                 info.add(L"filename", filename_);\r
 222                 return info;\r
 223         }\r
 224 \r
 225         uint32_t nb_frames() const override\r
 226         {\r
 227                 if(height_ > format_desc_.height)\r
 228                 {\r
 229                         auto length = (height_ - format_desc_.height);\r
 230                         return length/std::abs(speed_);// + length % std::abs(delta_));\r
 231                 }\r
 232                 else\r
 233                 {\r
 234                         auto length = (width_ - format_desc_.width);\r
 235                         auto result = length/std::abs(speed_);// + length % std::abs(delta_));\r
 236                         return result;\r
 237                 }\r
 238         }\r
 239 \r
 240         void subscribe(const monitor::observable::observer_ptr& o) override                                                                                                                     \r
 241         {\r
 242                 return event_subject_.subscribe(o);\r
 243         }\r
 244 \r
 245         void unsubscribe(const monitor::observable::observer_ptr& o) override           \r
 246         {\r
 247                 return event_subject_.unsubscribe(o);\r
 248         }\r
 249 };\r
 250 \r
 251 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
 252 {\r
 253         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
 254         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 255         \r
 256         auto ext = std::find_if(extensions.begin(), extensions.end(), [&](const std::wstring& ex) -> bool\r
 257                 {                                       \r
 258                         return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename).replace_extension(ex));\r
 259                 });\r
 260 \r
 261         if(ext == extensions.end())\r
 262                 return core::frame_producer::empty();\r
 263         \r
 264         int speed = 0;\r
 265         auto speed_it = std::find(params.begin(), params.end(), L"SPEED");\r
 266         if(speed_it != params.end())\r
 267         {\r
 268                 if(++speed_it != params.end())\r
 269                         speed = boost::lexical_cast<int>(*speed_it);\r
 270         }\r
 271 \r
 272         if(speed == 0)\r
 273                 return core::frame_producer::empty();\r
 274 \r
 275         return spl::make_shared<image_scroll_producer>(frame_factory, format_desc, filename + L"." + *ext, speed);\r
 276 }\r
 277 \r
 278 }}