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
  36 #include <common/env.h>
  37 #include <common/log.h>
  38 #include <common/array.h>
  39 #include <common/base64.h>
  40
  41 #include <boost/assign.hpp>
  42 #include <boost/filesystem.hpp>
  43 #include <boost/property_tree/ptree.hpp>
  44 #include <boost/algorithm/string.hpp>
  45
  46 #include <algorithm>
  47
  48 using namespace boost::assign;
  49
  50 namespace caspar { namespace image {
  51
  52 std::pair<core::draw_frame, core::constraints> load_image(
  53                 const spl::shared_ptr<core::frame_factory>& frame_factory,
  54                 const std::wstring& filename)
  55 {
  56         auto bitmap = load_image(filename);
  57         FreeImage_FlipVertical(bitmap.get());
  58
  59         core::pixel_format_desc desc = core::pixel_format::bgra;
  60         auto width = FreeImage_GetWidth(bitmap.get());
  61         auto height = FreeImage_GetHeight(bitmap.get());
  62         desc.planes.push_back(core::pixel_format_desc::plane(width, height, 4));
  63         auto frame = frame_factory->create_frame(bitmap.get(), desc);
  64
  65         std::copy_n(
  66                         FreeImage_GetBits(bitmap.get()),
  67                         frame.image_data(0).size(),
  68                         frame.image_data(0).begin());
  69
  70         return std::make_pair(
  71                         core::draw_frame(std::move(frame)),
  72                         core::constraints(width, height));
  73 }
  74
  75 struct image_producer : public core::frame_producer_base
  76 {
  77         monitor::basic_subject  event_subject_;
  78         const std::wstring              description_;
  79         const spl::shared_ptr<core::frame_factory> frame_factory_;
  80         core::draw_frame                frame_;
  81         core::constraints               constraints_;
  82
  83         image_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& description)
  84                 : description_(description)
  85                 , frame_factory_(frame_factory)
  86                 , frame_(core::draw_frame::empty())
  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                 , frame_(core::draw_frame::empty())
  97         {
  98                 load(load_png_from_memory(png_data, size));
  99
 100                 CASPAR_LOG(info) << print() << L" Initialized";
 101         }
 102
 103         void load(const std::shared_ptr<FIBITMAP>& bitmap)
 104         {
 105                 FreeImage_FlipVertical(bitmap.get());
 106                 core::pixel_format_desc desc;
 107                 desc.format = core::pixel_format::bgra;
 108                 desc.planes.push_back(core::pixel_format_desc::plane(FreeImage_GetWidth(bitmap.get()), FreeImage_GetHeight(bitmap.get()), 4));
 109                 auto frame = frame_factory_->create_frame(this, desc);
 110
 111                 std::copy_n(FreeImage_GetBits(bitmap.get()), frame.image_data().size(), frame.image_data().begin());
 112                 frame_ = core::draw_frame(std::move(frame));
 113         }
 114
 115         // frame_producer
 116
 117         core::draw_frame receive_impl() override
 118         {
 119                 event_subject_ << monitor::event("file/path") % description_;
 120
 121                 return frame_;
 122         }
 123
 124         core::draw_frame create_thumbnail_frame() override
 125         {
 126                 return frame_;
 127         }
 128
 129         core::constraints& pixel_constraints() override
 130         {
 131                 return constraints_;
 132         }
 133
 134         std::wstring print() const override
 135         {
 136                 return L"image_producer[" + description_ + L"]";
 137         }
 138
 139         std::wstring name() const override
 140         {
 141                 return L"image";
 142         }
 143
 144         boost::property_tree::wptree info() const override
 145         {
 146                 boost::property_tree::wptree info;
 147                 info.add(L"type", L"image");
 148                 info.add(L"location", description_);
 149                 return info;
 150         }
 151
 152         void subscribe(const monitor::observable::observer_ptr& o) override
 153         {
 154                 return event_subject_.subscribe(o);
 155         }
 156
 157         void unsubscribe(const monitor::observable::observer_ptr& o) override
 158         {
 159                 return event_subject_.unsubscribe(o);
 160         }
 161 };
 162
 163 class ieq
 164 {
 165         std::wstring test_;
 166 public:
 167         ieq(const std::wstring& test)
 168                 : test_(test)
 169         {
 170         }
 171
 172         bool operator()(const std::wstring& elem) const
 173         {
 174                 return boost::iequals(elem, test_);
 175         }
 176 };
 177
 178 spl::shared_ptr<core::frame_producer> create_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const core::video_format_desc& format_desc, const std::vector<std::wstring>& params)
 179 {
 180         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");
 181
 182         if (boost::iequals(params[0], L"[IMG_SEQUENCE]"))
 183         {
 184                 if (params.size() != 2)
 185                         return core::frame_producer::empty();
 186
 187                 auto dir = boost::filesystem::path(env::media_folder() + params[1]).parent_path();
 188                 auto basename = boost::filesystem3::basename(params[1]);
 189                 std::set<std::wstring> files;
 190                 boost::filesystem::directory_iterator end;
 191
 192                 for (boost::filesystem::directory_iterator it(dir); it != end; ++it)
 193                 {
 194                         auto name = it->path().filename().wstring();
 195
 196                         if (!boost::algorithm::istarts_with(name, basename))
 197                                 continue;
 198
 199                         auto extension = it->path().extension().wstring();
 200
 201                         if (std::find_if(extensions.begin(), extensions.end(), ieq(extension)) == extensions.end())
 202                                 continue;
 203
 204                         files.insert(it->path().wstring());
 205                 }
 206
 207                 if (files.empty())
 208                         return core::frame_producer::empty();
 209
 210                 int width = -1;
 211                 int height = -1;
 212                 std::vector<core::draw_frame> frames;
 213                 frames.reserve(files.size());
 214
 215                 BOOST_FOREACH(auto& file, files)
 216                 {
 217                         auto frame = load_image(frame_factory, file);
 218
 219                         if (width == -1)
 220                         {
 221                                 width = static_cast<int>(frame.second.width.get());
 222                                 height = static_cast<int>(frame.second.height.get());
 223                         }
 224
 225                         frames.push_back(std::move(frame.first));
 226                 }
 227
 228                 return core::create_const_producer(std::move(frames), width, height);
 229         }
 230         else if(boost::iequals(params[0], L"[PNG_BASE64]"))
 231         {
 232                 if (params.size() < 2)
 233                         return core::frame_producer::empty();
 234
 235                 auto png_data = from_base64(std::string(params[1].begin(), params[1].end()));
 236
 237                 return spl::make_shared<image_producer>(frame_factory, png_data.data(), png_data.size());
 238         }
 239
 240         std::wstring filename = env::media_folder() + params[0];
 241
 242         auto ext = std::find_if(extensions.begin(), extensions.end(), [&](const std::wstring& ex) -> bool
 243                 {
 244                         return boost::filesystem::is_regular_file(boost::filesystem::path(filename).replace_extension(ex));
 245                 });
 246
 247         if(ext == extensions.end())
 248                 return core::frame_producer::empty();
 249
 250         return spl::make_shared<image_producer>(frame_factory, filename + *ext);
 251 }
 252
 253
 254 spl::shared_ptr<core::frame_producer> create_thumbnail_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const core::video_format_desc& format_desc, const std::vector<std::wstring>& params)
 255 {
 256         return caspar::image::create_producer(frame_factory, format_desc, params);
 257 }
 258 }}