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