git.sesse.net Git - casparcg/blob - core/producer/stage.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 "../StdAfx.h"\r
  23 \r
  24 #include "stage.h"\r
  25 \r
  26 #include "layer.h"\r
  27 \r
  28 #include "../frame/draw_frame.h"\r
  29 #include "../frame/frame_factory.h"\r
  30 \r
  31 #include <common/executor.h>\r
  32 #include <common/future.h>\r
  33 #include <common/diagnostics/graph.h>\r
  34 \r
  35 #include <core/frame/frame_transform.h>\r
  36 \r
  37 #include <boost/foreach.hpp>\r
  38 #include <boost/timer.hpp>\r
  39 #include <boost/property_tree/ptree.hpp>\r
  40 #include <boost/range/algorithm_ext.hpp>\r
  41 \r
  42 #include <tbb/parallel_for_each.h>\r
  43 \r
  44 #include <functional>\r
  45 #include <map>\r
  46 #include <vector>\r
  47 \r
  48 namespace caspar { namespace core {\r
  49         \r
  50 struct stage::impl : public std::enable_shared_from_this<impl>\r
  51 {                               \r
  52         spl::shared_ptr<diagnostics::graph>                                                     graph_;\r
  53         monitor::basic_subject                                                                          event_subject_;\r
  54         reactive::basic_subject<std::map<int, class draw_frame>>        frames_subject_;\r
  55         std::map<int, layer>                                                                            layers_;        \r
  56         std::map<int, tweened_transform>                                                        tweens_;        \r
  57         executor                                                                                                        executor_;\r
  58 public:\r
  59         impl(spl::shared_ptr<diagnostics::graph> graph) \r
  60                 : graph_(std::move(graph))\r
  61                 , event_subject_("stage")\r
  62                 , executor_(L"stage")\r
  63         {\r
  64                 graph_->set_color("produce-time", diagnostics::color(0.0f, 1.0f, 0.0f));\r
  65         }\r
  66                 \r
  67         std::map<int, draw_frame> operator()(const struct video_format_desc& format_desc)\r
  68         {               \r
  69                 boost::timer frame_timer;\r
  70 \r
  71                 auto frames = executor_.invoke([=]() -> std::map<int, draw_frame>\r
  72                 {\r
  73 \r
  74                         std::map<int, class draw_frame> frames;\r
  75                         \r
  76                         try\r
  77                         {                       \r
  78                                 std::vector<int> indices;\r
  79 \r
  80                                 BOOST_FOREACH(auto& layer, layers_)     \r
  81                                 {\r
  82                                         frames[layer.first] = draw_frame::empty();      \r
  83                                         indices.push_back(layer.first);\r
  84                                 }                               \r
  85 \r
  86                                 // WORKAROUND: Compiler doesn't seem to like lambda.\r
  87                                 tbb::parallel_for_each(indices.begin(), indices.end(), std::bind(&stage::impl::draw, this, std::placeholders::_1, std::ref(format_desc), std::ref(frames)));\r
  88                         }\r
  89                         catch(...)\r
  90                         {\r
  91                                 layers_.clear();\r
  92                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
  93                         }       \r
  94                         \r
  95 \r
  96                         return frames;\r
  97                 });\r
  98                 \r
  99                 frames_subject_ << frames;\r
 100                 \r
 101                 graph_->set_value("produce-time", frame_timer.elapsed()*format_desc.fps*0.5);\r
 102                 event_subject_ << monitor::event("profiler/time") % frame_timer.elapsed() % (1.0/format_desc.fps);\r
 103 \r
 104                 return frames;\r
 105         }\r
 106 \r
 107         void draw(int index, const video_format_desc& format_desc, std::map<int, draw_frame>& frames)\r
 108         {\r
 109                 auto& layer             = layers_[index];\r
 110                 auto& tween             = tweens_[index];\r
 111                                 \r
 112                 auto frame  = layer.receive(format_desc);                                       \r
 113                 auto frame1 = frame;\r
 114                 frame1.transform() *= tween.fetch_and_tick(1);\r
 115 \r
 116                 if(format_desc.field_mode != core::field_mode::progressive)\r
 117                 {                               \r
 118                         auto frame2 = frame;\r
 119                         frame2.transform() *= tween.fetch_and_tick(1);\r
 120                         frame1 = core::draw_frame::interlace(frame1, frame2, format_desc.field_mode);\r
 121                 }\r
 122 \r
 123                 frames[index] = frame1;\r
 124         }\r
 125 \r
 126         layer& get_layer(int index)\r
 127         {\r
 128                 auto it = layers_.find(index);\r
 129                 if(it == std::end(layers_))\r
 130                 {\r
 131                         it = layers_.insert(std::make_pair(index, layer(index))).first;\r
 132                         it->second.subscribe(event_subject_);\r
 133                 }\r
 134                 return it->second;\r
 135         }\r
 136                 \r
 137         boost::unique_future<void> apply_transforms(const std::vector<std::tuple<int, stage::transform_func_t, unsigned int, tweener>>& transforms)\r
 138         {\r
 139                 return executor_.begin_invoke([=]\r
 140                 {\r
 141                         BOOST_FOREACH(auto& transform, transforms)\r
 142                         {\r
 143                                 auto src = tweens_[std::get<0>(transform)].fetch();\r
 144                                 auto dst = std::get<1>(transform)(src);\r
 145                                 tweens_[std::get<0>(transform)] = tweened_transform(src, dst, std::get<2>(transform), std::get<3>(transform));\r
 146                         }\r
 147                 }, task_priority::high_priority);\r
 148         }\r
 149                                                 \r
 150         boost::unique_future<void> apply_transform(int index, const stage::transform_func_t& transform, unsigned int mix_duration, const tweener& tween)\r
 151         {\r
 152                 return executor_.begin_invoke([=]\r
 153                 {\r
 154                         auto src = tweens_[index].fetch();\r
 155                         auto dst = transform(src);\r
 156                         tweens_[index] = tweened_transform(src, dst, mix_duration, tween);\r
 157                 }, task_priority::high_priority);\r
 158         }\r
 159 \r
 160         boost::unique_future<void> clear_transforms(int index)\r
 161         {\r
 162                 return executor_.begin_invoke([=]\r
 163                 {\r
 164                         tweens_.erase(index);\r
 165                 }, task_priority::high_priority);\r
 166         }\r
 167 \r
 168         boost::unique_future<void> clear_transforms()\r
 169         {\r
 170                 return executor_.begin_invoke([=]\r
 171                 {\r
 172                         tweens_.clear();\r
 173                 }, task_priority::high_priority);\r
 174         }\r
 175                 \r
 176         boost::unique_future<void> load(int index, const spl::shared_ptr<frame_producer>& producer, bool preview, const boost::optional<int32_t>& auto_play_delta)\r
 177         {\r
 178                 return executor_.begin_invoke([=]\r
 179                 {\r
 180                         get_layer(index).load(producer, preview, auto_play_delta);                      \r
 181                 }, task_priority::high_priority);\r
 182         }\r
 183 \r
 184         boost::unique_future<void> pause(int index)\r
 185         {               \r
 186                 return executor_.begin_invoke([=]\r
 187                 {\r
 188                         layers_[index].pause();\r
 189                 }, task_priority::high_priority);\r
 190         }\r
 191 \r
 192         boost::unique_future<void> play(int index)\r
 193         {               \r
 194                 return executor_.begin_invoke([=]\r
 195                 {\r
 196                         layers_[index].play();\r
 197                 }, task_priority::high_priority);\r
 198         }\r
 199 \r
 200         boost::unique_future<void> stop(int index)\r
 201         {               \r
 202                 return executor_.begin_invoke([=]\r
 203                 {\r
 204                         layers_[index].stop();\r
 205                 }, task_priority::high_priority);\r
 206         }\r
 207 \r
 208         boost::unique_future<void> clear(int index)\r
 209         {\r
 210                 return executor_.begin_invoke([=]\r
 211                 {\r
 212                         layers_.erase(index);\r
 213                 }, task_priority::high_priority);\r
 214         }\r
 215                 \r
 216         boost::unique_future<void> clear()\r
 217         {\r
 218                 return executor_.begin_invoke([=]\r
 219                 {\r
 220                         layers_.clear();\r
 221                 }, task_priority::high_priority);\r
 222         }       \r
 223                 \r
 224         boost::unique_future<void> swap_layers(stage& other)\r
 225         {\r
 226                 auto other_impl = other.impl_;\r
 227 \r
 228                 if(other_impl.get() == this)\r
 229                         return async(launch::deferred, []{});\r
 230                 \r
 231                 auto func = [=]\r
 232                 {\r
 233                         auto layers                     = layers_ | boost::adaptors::map_values;\r
 234                         auto other_layers       = other_impl->layers_ | boost::adaptors::map_values;\r
 235 \r
 236                         BOOST_FOREACH(auto& layer, layers)\r
 237                                 layer.unsubscribe(event_subject_);\r
 238                         \r
 239                         BOOST_FOREACH(auto& layer, other_layers)\r
 240                                 layer.unsubscribe(event_subject_);\r
 241                         \r
 242                         std::swap(layers_, other_impl->layers_);\r
 243                                                 \r
 244                         BOOST_FOREACH(auto& layer, layers)\r
 245                                 layer.subscribe(event_subject_);\r
 246                         \r
 247                         BOOST_FOREACH(auto& layer, other_layers)\r
 248                                 layer.subscribe(event_subject_);\r
 249                 };              \r
 250 \r
 251                 return executor_.begin_invoke([=]\r
 252                 {\r
 253                         other_impl->executor_.invoke(func, task_priority::high_priority);\r
 254                 }, task_priority::high_priority);\r
 255         }\r
 256 \r
 257         boost::unique_future<void> swap_layer(int index, int other_index)\r
 258         {\r
 259                 return executor_.begin_invoke([=]\r
 260                 {\r
 261                         std::swap(layers_[index], layers_[other_index]);\r
 262                 }, task_priority::high_priority);\r
 263         }\r
 264 \r
 265         boost::unique_future<void> swap_layer(int index, int other_index, stage& other)\r
 266         {\r
 267                 auto other_impl = other.impl_;\r
 268 \r
 269                 if(other_impl.get() == this)\r
 270                         return swap_layer(index, other_index);\r
 271                 else\r
 272                 {\r
 273                         auto func = [=]\r
 274                         {\r
 275                                 auto& my_layer          = get_layer(index);\r
 276                                 auto& other_layer       = other_impl->get_layer(other_index);\r
 277 \r
 278                                 my_layer.unsubscribe(event_subject_);\r
 279                                 other_layer.unsubscribe(other_impl->event_subject_);\r
 280 \r
 281                                 std::swap(my_layer, other_layer);\r
 282 \r
 283                                 my_layer.subscribe(event_subject_);\r
 284                                 other_layer.subscribe(other_impl->event_subject_);\r
 285                         };              \r
 286 \r
 287                         return executor_.begin_invoke([=]\r
 288                         {\r
 289                                 other_impl->executor_.invoke(func, task_priority::high_priority);\r
 290                         }, task_priority::high_priority);\r
 291                 }\r
 292         }\r
 293                 \r
 294         boost::unique_future<spl::shared_ptr<frame_producer>> foreground(int index)\r
 295         {\r
 296                 return executor_.begin_invoke([=]\r
 297                 {\r
 298                         return layers_[index].foreground();\r
 299                 }, task_priority::high_priority);\r
 300         }\r
 301         \r
 302         boost::unique_future<spl::shared_ptr<frame_producer>> background(int index)\r
 303         {\r
 304                 return executor_.begin_invoke([=]\r
 305                 {\r
 306                         return layers_[index].background();\r
 307                 }, task_priority::high_priority);\r
 308         }\r
 309 \r
 310         boost::unique_future<boost::property_tree::wptree> info()\r
 311         {\r
 312                 return executor_.begin_invoke([this]() -> boost::property_tree::wptree\r
 313                 {\r
 314                         boost::property_tree::wptree info;\r
 315                         BOOST_FOREACH(auto& layer, layers_)                     \r
 316                                 info.add_child(L"layers.layer", layer.second.info())\r
 317                                         .add(L"index", layer.first);    \r
 318                         return info;\r
 319                 }, task_priority::high_priority);\r
 320         }\r
 321 \r
 322         boost::unique_future<boost::property_tree::wptree> info(int index)\r
 323         {\r
 324                 return executor_.begin_invoke([=]\r
 325                 {\r
 326                         return layers_[index].info();\r
 327                 }, task_priority::high_priority);\r
 328         }               \r
 329         \r
 330         boost::unique_future<std::wstring> call(int index, const std::wstring& params)\r
 331         {\r
 332                 return flatten(executor_.begin_invoke([=]\r
 333                 {\r
 334                         return make_shared(layers_[index].foreground()->call(params));\r
 335                 }, task_priority::high_priority));\r
 336         }\r
 337 };\r
 338 \r
 339 stage::stage(spl::shared_ptr<diagnostics::graph> graph) : impl_(new impl(std::move(graph))){}\r
 340 boost::unique_future<std::wstring> stage::call(int index, const std::wstring& params){return impl_->call(index, params);}\r
 341 boost::unique_future<void> stage::apply_transforms(const std::vector<stage::transform_tuple_t>& transforms){return impl_->apply_transforms(transforms);}\r
 342 boost::unique_future<void> stage::apply_transform(int index, const std::function<core::frame_transform(core::frame_transform)>& transform, unsigned int mix_duration, const tweener& tween){return impl_->apply_transform(index, transform, mix_duration, tween);}\r
 343 boost::unique_future<void> stage::clear_transforms(int index){return impl_->clear_transforms(index);}\r
 344 boost::unique_future<void> stage::clear_transforms(){return impl_->clear_transforms();}\r
 345 boost::unique_future<void> stage::load(int index, const spl::shared_ptr<frame_producer>& producer, bool preview, const boost::optional<int32_t>& auto_play_delta){return impl_->load(index, producer, preview, auto_play_delta);}\r
 346 boost::unique_future<void> stage::pause(int index){return impl_->pause(index);}\r
 347 boost::unique_future<void> stage::play(int index){return impl_->play(index);}\r
 348 boost::unique_future<void> stage::stop(int index){return impl_->stop(index);}\r
 349 boost::unique_future<void> stage::clear(int index){return impl_->clear(index);}\r
 350 boost::unique_future<void> stage::clear(){return impl_->clear();}\r
 351 boost::unique_future<void> stage::swap_layers(stage& other){return impl_->swap_layers(other);}\r
 352 boost::unique_future<void> stage::swap_layer(int index, int other_index){return impl_->swap_layer(index, other_index);}\r
 353 boost::unique_future<void> stage::swap_layer(int index, int other_index, stage& other){return impl_->swap_layer(index, other_index, other);}\r
 354 boost::unique_future<spl::shared_ptr<frame_producer>> stage::foreground(int index) {return impl_->foreground(index);}\r
 355 boost::unique_future<spl::shared_ptr<frame_producer>> stage::background(int index) {return impl_->background(index);}\r
 356 boost::unique_future<boost::property_tree::wptree> stage::info() const{return impl_->info();}\r
 357 boost::unique_future<boost::property_tree::wptree> stage::info(int index) const{return impl_->info(index);}\r
 358 std::map<int, class draw_frame> stage::operator()(const video_format_desc& format_desc){return (*impl_)(format_desc);}\r
 359 void stage::subscribe(const monitor::observable::observer_ptr& o) {impl_->event_subject_.subscribe(o);}\r
 360 void stage::unsubscribe(const monitor::observable::observer_ptr& o) {impl_->event_subject_.unsubscribe(o);}\r
 361 void stage::subscribe(const frame_observable::observer_ptr& o) {impl_->frames_subject_.subscribe(o);}\r
 362 void stage::unsubscribe(const frame_observable::observer_ptr& o) {impl_->frames_subject_.unsubscribe(o);}\r
 363 }}