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/frame/audio_channel_layout.h>
  35 #include <core/monitor/monitor.h>
  36 #include <core/help/help_sink.h>
  37 #include <core/help/help_repository.h>
  38
  39 #include <common/env.h>
  40 #include <common/log.h>
  41 #include <common/array.h>
  42 #include <common/base64.h>
  43 #include <common/param.h>
  44 #include <common/os/filesystem.h>
  45
  46 #include <boost/filesystem.hpp>
  47 #include <boost/property_tree/ptree.hpp>
  48 #include <boost/algorithm/string.hpp>
  49
  50 #include <algorithm>
  51 #include <set>
  52
  53 namespace caspar { namespace image {
  54
  55 std::pair<core::draw_frame, core::constraints> load_image(
  56                 const spl::shared_ptr<core::frame_factory>& frame_factory,
  57                 const std::wstring& filename)
  58 {
  59         auto bitmap = load_image(filename);
  60         FreeImage_FlipVertical(bitmap.get());
  61
  62         core::pixel_format_desc desc = core::pixel_format::bgra;
  63         auto width = FreeImage_GetWidth(bitmap.get());
  64         auto height = FreeImage_GetHeight(bitmap.get());
  65         desc.planes.push_back(core::pixel_format_desc::plane(width, height, 4));
  66         auto frame = frame_factory->create_frame(bitmap.get(), desc, core::audio_channel_layout::invalid());
  67
  68         std::copy_n(
  69                         FreeImage_GetBits(bitmap.get()),
  70                         frame.image_data(0).size(),
  71                         frame.image_data(0).begin());
  72
  73         return std::make_pair(
  74                         core::draw_frame(std::move(frame)),
  75                         core::constraints(width, height));
  76 }
  77
  78 struct image_producer : public core::frame_producer_base
  79 {
  80         core::monitor::subject                                          monitor_subject_;
  81         const std::wstring                                                      description_;
  82         const spl::shared_ptr<core::frame_factory>      frame_factory_;
  83         const uint32_t                                                          length_;
  84         core::draw_frame                                                        frame_                          = core::draw_frame::empty();
  85         core::constraints                                                       constraints_;
  86
  87         image_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& description, bool thumbnail_mode, uint32_t length)
  88                 : description_(description)
  89                 , frame_factory_(frame_factory)
  90                 , length_(length)
  91         {
  92                 load(load_image(description_));
  93
  94                 if (thumbnail_mode)
  95                         CASPAR_LOG(debug) << print() << L" Initialized";
  96                 else
  97                         CASPAR_LOG(info) << print() << L" Initialized";
  98         }
  99
 100         image_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const void* png_data, size_t size, uint32_t length)
 101                 : description_(L"png from memory")
 102                 , frame_factory_(frame_factory)
 103                 , length_(length)
 104         {
 105                 load(load_png_from_memory(png_data, size));
 106
 107                 CASPAR_LOG(info) << print() << L" Initialized";
 108         }
 109
 110         void load(const std::shared_ptr<FIBITMAP>& bitmap)
 111         {
 112                 FreeImage_FlipVertical(bitmap.get());
 113                 auto longest_side = static_cast<int>(std::max(FreeImage_GetWidth(bitmap.get()), FreeImage_GetHeight(bitmap.get())));
 114
 115                 if (longest_side > frame_factory_->get_max_frame_size())
 116                         CASPAR_THROW_EXCEPTION(user_error() << msg_info("Image too large for texture"));
 117
 118                 core::pixel_format_desc desc;
 119                 desc.format = core::pixel_format::bgra;
 120                 desc.planes.push_back(core::pixel_format_desc::plane(FreeImage_GetWidth(bitmap.get()), FreeImage_GetHeight(bitmap.get()), 4));
 121                 auto frame = frame_factory_->create_frame(this, desc, core::audio_channel_layout::invalid());
 122
 123                 std::copy_n(FreeImage_GetBits(bitmap.get()), frame.image_data().size(), frame.image_data().begin());
 124                 frame_ = core::draw_frame(std::move(frame));
 125                 constraints_.width.set(FreeImage_GetWidth(bitmap.get()));
 126                 constraints_.height.set(FreeImage_GetHeight(bitmap.get()));
 127         }
 128
 129         // frame_producer
 130
 131         core::draw_frame receive_impl() override
 132         {
 133                 monitor_subject_ << core::monitor::message("/file/path") % description_;
 134
 135                 return frame_;
 136         }
 137
 138         uint32_t nb_frames() const override
 139         {
 140                 return length_;
 141         }
 142
 143         core::constraints& pixel_constraints() override
 144         {
 145                 return constraints_;
 146         }
 147
 148         std::wstring print() const override
 149         {
 150                 return L"image_producer[" + description_ + L"]";
 151         }
 152
 153         std::wstring name() const override
 154         {
 155                 return L"image";
 156         }
 157
 158         boost::property_tree::wptree info() const override
 159         {
 160                 boost::property_tree::wptree info;
 161                 info.add(L"type", L"image");
 162                 info.add(L"location", description_);
 163                 return info;
 164         }
 165
 166         core::monitor::subject& monitor_output() override
 167         {
 168                 return monitor_subject_;
 169         }
 170 };
 171
 172 class ieq
 173 {
 174         std::wstring test_;
 175 public:
 176         ieq(const std::wstring& test)
 177                 : test_(test)
 178         {
 179         }
 180
 181         bool operator()(const std::wstring& elem) const
 182         {
 183                 return boost::iequals(elem, test_);
 184         }
 185 };
 186
 187 void describe_producer(core::help_sink& sink, const core::help_repository& repo)
 188 {
 189         sink.short_description(L"Loads a still image.");
 190         sink.syntax(L"{[image_file:string]},{[PNG_BASE64] [encoded:string]} {LENGTH [length:int]}");
 191         sink.para()->text(L"Loads a still image, either from disk or via a base64 encoded image submitted via AMCP.");
 192         sink.para()->text(L"The ")->code(L"length")->text(L" parameter can be used to limit the number of frames that the image will be shown for.");
 193         sink.para()->text(L"Examples:");
 194         sink.example(L">> PLAY 1-10 image_file", L"Plays an image from the media folder.");
 195         sink.example(L">> PLAY 1-10 [PNG_BASE64] data...", L"Plays a PNG image transferred as a base64 encoded string.");
 196         sink.example(
 197                                 L">> PLAY 1-10 slide_show1 LENGTH 100\n"
 198                                 L">> LOADBG 1-10 slide_show2 LENGTH 100 MIX 20 AUTO\n"
 199                                 L"delay until foreground layer becomes slide_show2 and then\n"
 200                                 L">> LOADBG 1-10 slide_show3 LENGTH 100 MIX 20 AUTO\n"
 201                                 L"delay until foreground layer becomes slide_show3 and then\n"
 202                                 L">> LOADBG 1-10 EMPTY MIX 20 AUTO\n", L"Plays a slide show of 3 images for 100 frames each and fades to black.");
 203 }
 204
 205 spl::shared_ptr<core::frame_producer> create_producer(const core::frame_producer_dependencies& dependencies, const std::vector<std::wstring>& params)
 206 {
 207         auto length = get_param(L"LENGTH", params, std::numeric_limits<uint32_t>::max());
 208
 209         if (boost::iequals(params.at(0), L"[IMG_SEQUENCE]"))
 210         {
 211                 if (params.size() != 2)
 212                         return core::frame_producer::empty();
 213
 214                 auto dir = boost::filesystem::path(env::media_folder() + params.at(1)).parent_path();
 215                 auto basename = boost::filesystem::basename(params.at(1));
 216                 std::set<std::wstring> files;
 217                 boost::filesystem::directory_iterator end;
 218
 219                 for (boost::filesystem::directory_iterator it(dir); it != end; ++it)
 220                 {
 221                         auto name = it->path().filename().wstring();
 222
 223                         if (!boost::algorithm::istarts_with(name, basename))
 224                                 continue;
 225
 226                         auto extension = it->path().extension().wstring();
 227
 228                         if (std::find_if(supported_extensions().begin(), supported_extensions().end(), ieq(extension)) == supported_extensions().end())
 229                                 continue;
 230
 231                         files.insert(it->path().wstring());
 232                 }
 233
 234                 if (files.empty())
 235                         return core::frame_producer::empty();
 236
 237                 int width = -1;
 238                 int height = -1;
 239                 std::vector<core::draw_frame> frames;
 240                 frames.reserve(files.size());
 241
 242                 for (auto& file : files)
 243                 {
 244                         auto frame = load_image(dependencies.frame_factory, file);
 245
 246                         if (width == -1)
 247                         {
 248                                 width = static_cast<int>(frame.second.width.get());
 249                                 height = static_cast<int>(frame.second.height.get());
 250                         }
 251
 252                         frames.push_back(std::move(frame.first));
 253                 }
 254
 255                 return core::create_const_producer(std::move(frames), width, height);
 256         }
 257         else if(boost::iequals(params.at(0), L"[PNG_BASE64]"))
 258         {
 259                 if (params.size() < 2)
 260                         return core::frame_producer::empty();
 261
 262                 auto png_data = from_base64(std::string(params.at(1).begin(), params.at(1).end()));
 263
 264                 return spl::make_shared<image_producer>(dependencies.frame_factory, png_data.data(), png_data.size(), length);
 265         }
 266
 267         std::wstring filename = env::media_folder() + params.at(0);
 268
 269         auto ext = std::find_if(supported_extensions().begin(), supported_extensions().end(), [&](const std::wstring& ex) -> bool
 270         {
 271                 auto file = caspar::find_case_insensitive(boost::filesystem::path(filename).wstring() + ex);
 272
 273                 return static_cast<bool>(file);
 274         });
 275
 276         if(ext == supported_extensions().end())
 277                 return core::frame_producer::empty();
 278
 279         return spl::make_shared<image_producer>(dependencies.frame_factory, *caspar::find_case_insensitive(filename + *ext), false, length);
 280 }
 281
 282
 283 core::draw_frame create_thumbnail(const core::frame_producer_dependencies& dependencies, const std::wstring& media_file)
 284 {
 285         std::wstring filename = env::media_folder() + media_file;
 286
 287         auto ext = std::find_if(supported_extensions().begin(), supported_extensions().end(), [&](const std::wstring& ex) -> bool
 288         {
 289                 auto file = caspar::find_case_insensitive(boost::filesystem::path(filename).wstring() + ex);
 290
 291                 return static_cast<bool>(file);
 292         });
 293
 294         if (ext == supported_extensions().end())
 295                 return core::draw_frame::empty();
 296
 297         spl::shared_ptr<core::frame_producer> producer = spl::make_shared<image_producer>(
 298                         dependencies.frame_factory,
 299                         *caspar::find_case_insensitive(filename + *ext),
 300                         true,
 301                         1);
 302
 303         return producer->receive();
 304 }
 305
 306 }}