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

   1 /*
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Robert Nagy, ronag89@gmail.com
  20 */
  21
  22 #include "image_producer.h"
  23
  24 #include "../util/image_loader.h"
  25
  26 #include <core/video_format.h>
  27
  28 #include <core/producer/frame_producer.h>
  29 #include <core/producer/scene/const_producer.h>
  30 #include <core/frame/frame.h>
  31 #include <core/frame/draw_frame.h>
  32 #include <core/frame/frame_factory.h>
  33 #include <core/frame/pixel_format.h>
  34 #include <core/monitor/monitor.h>
  35 #include <core/help/help_sink.h>
  36 #include <core/help/help_repository.h>
  37
  38 #include <common/env.h>
  39 #include <common/log.h>
  40 #include <common/array.h>
  41 #include <common/base64.h>
  42 #include <common/os/filesystem.h>
  43
  44 #include <boost/filesystem.hpp>
  45 #include <boost/property_tree/ptree.hpp>
  46 #include <boost/algorithm/string.hpp>
  47
  48 #include <algorithm>
  49 #include <set>
  50
  51 namespace caspar { namespace image {
  52
  53 std::pair<core::draw_frame, core::constraints> load_image(
  54                 const spl::shared_ptr<core::frame_factory>& frame_factory,
  55                 const std::wstring& filename)
  56 {
  57         auto bitmap = load_image(filename);
  58         FreeImage_FlipVertical(bitmap.get());
  59
  60         core::pixel_format_desc desc = core::pixel_format::bgra;
  61         auto width = FreeImage_GetWidth(bitmap.get());
  62         auto height = FreeImage_GetHeight(bitmap.get());
  63         desc.planes.push_back(core::pixel_format_desc::plane(width, height, 4));
  64         auto frame = frame_factory->create_frame(bitmap.get(), desc);
  65
  66         std::copy_n(
  67                         FreeImage_GetBits(bitmap.get()),
  68                         frame.image_data(0).size(),
  69                         frame.image_data(0).begin());
  70
  71         return std::make_pair(
  72                         core::draw_frame(std::move(frame)),
  73                         core::constraints(width, height));
  74 }
  75
  76 struct image_producer : public core::frame_producer_base
  77 {
  78         core::monitor::subject                                          monitor_subject_;
  79         const std::wstring                                                      description_;
  80         const spl::shared_ptr<core::frame_factory>      frame_factory_;
  81         core::draw_frame                                                        frame_                          = core::draw_frame::empty();
  82         core::constraints                                                       constraints_;
  83
  84         image_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& description)
  85                 : description_(description)
  86                 , frame_factory_(frame_factory)
  87         {
  88                 load(load_image(description_));
  89
  90                 CASPAR_LOG(info) << print() << L" Initialized";
  91         }
  92
  93         image_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const void* png_data, size_t size)
  94                 : description_(L"png from memory")
  95                 , frame_factory_(frame_factory)
  96         {
  97                 load(load_png_from_memory(png_data, size));
  98
  99                 CASPAR_LOG(info) << print() << L" Initialized";
 100         }
 101
 102         void load(const std::shared_ptr<FIBITMAP>& bitmap)
 103         {
 104                 FreeImage_FlipVertical(bitmap.get());
 105                 core::pixel_format_desc desc;
 106                 desc.format = core::pixel_format::bgra;
 107                 desc.planes.push_back(core::pixel_format_desc::plane(FreeImage_GetWidth(bitmap.get()), FreeImage_GetHeight(bitmap.get()), 4));
 108                 auto frame = frame_factory_->create_frame(this, desc);
 109
 110                 std::copy_n(FreeImage_GetBits(bitmap.get()), frame.image_data().size(), frame.image_data().begin());
 111                 frame_ = core::draw_frame(std::move(frame));
 112                 constraints_.width.set(FreeImage_GetWidth(bitmap.get()));
 113                 constraints_.height.set(FreeImage_GetHeight(bitmap.get()));
 114         }
 115
 116         // frame_producer
 117
 118         core::draw_frame receive_impl() override
 119         {
 120                 monitor_subject_ << core::monitor::message("/file/path") % description_;
 121
 122                 return frame_;
 123         }
 124
 125         core::draw_frame create_thumbnail_frame() override
 126         {
 127                 return frame_;
 128         }
 129
 130         core::constraints& pixel_constraints() override
 131         {
 132                 return constraints_;
 133         }
 134
 135         std::wstring print() const override
 136         {
 137                 return L"image_producer[" + description_ + L"]";
 138         }
 139
 140         std::wstring name() const override
 141         {
 142                 return L"image";
 143         }
 144
 145         boost::property_tree::wptree info() const override
 146         {
 147                 boost::property_tree::wptree info;
 148                 info.add(L"type", L"image");
 149                 info.add(L"location", description_);
 150                 return info;
 151         }
 152
 153         core::monitor::subject& monitor_output()
 154         {
 155                 return monitor_subject_;
 156         }
 157 };
 158
 159 class ieq
 160 {
 161         std::wstring test_;
 162 public:
 163         ieq(const std::wstring& test)
 164                 : test_(test)
 165         {
 166         }
 167
 168         bool operator()(const std::wstring& elem) const
 169         {
 170                 return boost::iequals(elem, test_);
 171         }
 172 };
 173
 174 void describe_producer(core::help_sink& sink, const core::help_repository& repo)
 175 {
 176         sink.short_description(L"Loads a still image.");
 177         sink.syntax(L"{[image_file:string]},{[PNG_BASE64] [encoded:string]}");
 178         sink.para()->text(L"Loads a still image, either from disk or via a base64 encoded image submitted via AMCP.");
 179         sink.para()->text(L"Examples:");
 180         sink.example(L">> PLAY 1-10 image_file", L"Plays an image from the media folder.");
 181         sink.example(L">> PLAY 1-10 [PNG_BASE64] data...", L"Plays a PNG image transferred as a base64 encoded string.");
 182 }
 183
 184 spl::shared_ptr<core::frame_producer> create_producer(const core::frame_producer_dependencies& dependencies, const std::vector<std::wstring>& params)
 185 {
 186         static const auto extensions = {
 187                 L".png",
 188                 L".tga",
 189                 L".bmp",
 190                 L".jpg",
 191                 L".jpeg",
 192                 L".gif",
 193                 L".tiff",
 194                 L".tif",
 195                 L".jp2",
 196                 L".jpx",
 197                 L".j2k",
 198                 L".j2c"
 199         };
 200
 201         if (boost::iequals(params.at(0), L"[IMG_SEQUENCE]"))
 202         {
 203                 if (params.size() != 2)
 204                         return core::frame_producer::empty();
 205
 206                 auto dir = boost::filesystem::path(env::media_folder() + params.at(1)).parent_path();
 207                 auto basename = boost::filesystem::basename(params.at(1));
 208                 std::set<std::wstring> files;
 209                 boost::filesystem::directory_iterator end;
 210
 211                 for (boost::filesystem::directory_iterator it(dir); it != end; ++it)
 212                 {
 213                         auto name = it->path().filename().wstring();
 214
 215                         if (!boost::algorithm::istarts_with(name, basename))
 216                                 continue;
 217
 218                         auto extension = it->path().extension().wstring();
 219
 220                         if (std::find_if(extensions.begin(), extensions.end(), ieq(extension)) == extensions.end())
 221                                 continue;
 222
 223                         files.insert(it->path().wstring());
 224                 }
 225
 226                 if (files.empty())
 227                         return core::frame_producer::empty();
 228
 229                 int width = -1;
 230                 int height = -1;
 231                 std::vector<core::draw_frame> frames;
 232                 frames.reserve(files.size());
 233
 234                 for (auto& file : files)
 235                 {
 236                         auto frame = load_image(dependencies.frame_factory, file);
 237
 238                         if (width == -1)
 239                         {
 240                                 width = static_cast<int>(frame.second.width.get());
 241                                 height = static_cast<int>(frame.second.height.get());
 242                         }
 243
 244                         frames.push_back(std::move(frame.first));
 245                 }
 246
 247                 return core::create_const_producer(std::move(frames), width, height);
 248         }
 249         else if(boost::iequals(params.at(0), L"[PNG_BASE64]"))
 250         {
 251                 if (params.size() < 2)
 252                         return core::frame_producer::empty();
 253
 254                 auto png_data = from_base64(std::string(params.at(1).begin(), params.at(1).end()));
 255
 256                 return spl::make_shared<image_producer>(dependencies.frame_factory, png_data.data(), png_data.size());
 257         }
 258
 259         std::wstring filename = env::media_folder() + params.at(0);
 260
 261         auto ext = std::find_if(extensions.begin(), extensions.end(), [&](const std::wstring& ex) -> bool
 262         {
 263                 auto file = caspar::find_case_insensitive(boost::filesystem::path(filename).replace_extension(ex).wstring());
 264
 265                 return static_cast<bool>(file);
 266         });
 267
 268         if(ext == extensions.end())
 269                 return core::frame_producer::empty();
 270
 271         return spl::make_shared<image_producer>(dependencies.frame_factory, *caspar::find_case_insensitive(filename + *ext));
 272 }
 273
 274
 275 spl::shared_ptr<core::frame_producer> create_thumbnail_producer(const core::frame_producer_dependencies& dependencies, const std::vector<std::wstring>& params)
 276 {
 277         return caspar::image::create_producer(dependencies, params);
 278 }
 279
 280 }}