git.sesse.net Git - casparcg/blob - core/producer/stage.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 "../StdAfx.h"
  23
  24 #include "stage.h"
  25
  26 #include "layer.h"
  27
  28 #include "../frame/draw_frame.h"
  29 #include "../frame/frame_factory.h"
  30 #include "../interaction/interaction_aggregator.h"
  31
  32 #include <common/executor.h>
  33 #include <common/future.h>
  34 #include <common/diagnostics/graph.h>
  35
  36 #include <core/frame/frame_transform.h>
  37
  38 #include <boost/foreach.hpp>
  39 #include <boost/timer.hpp>
  40 #include <boost/property_tree/ptree.hpp>
  41 #include <boost/range/algorithm_ext.hpp>
  42
  43 #include <tbb/parallel_for_each.h>
  44
  45 #include <functional>
  46 #include <map>
  47 #include <vector>
  48 #include <future>
  49
  50 namespace caspar { namespace core {
  51
  52 struct stage::impl : public std::enable_shared_from_this<impl>
  53 {
  54         spl::shared_ptr<diagnostics::graph>                                                     graph_;
  55         spl::shared_ptr<monitor::subject>                                                       monitor_subject_;
  56         //reactive::basic_subject<std::map<int, class draw_frame>>      frames_subject_;
  57         std::map<int, layer>                                                                            layers_;
  58         std::map<int, tweened_transform>                                                        tweens_;
  59         interaction_aggregator                                                                          aggregator_;
  60         executor                                                                                                        executor_;
  61 public:
  62         impl(spl::shared_ptr<diagnostics::graph> graph)
  63                 : graph_(std::move(graph))
  64                 , monitor_subject_(spl::make_shared<monitor::subject>("/stage"))
  65                 , aggregator_([=] (double x, double y) { return collission_detect(x, y); })
  66                 , executor_(L"stage")
  67         {
  68                 graph_->set_color("produce-time", diagnostics::color(0.0f, 1.0f, 0.0f));
  69         }
  70
  71         std::map<int, draw_frame> operator()(const struct video_format_desc& format_desc)
  72         {
  73                 boost::timer frame_timer;
  74
  75                 auto frames = executor_.invoke([=]() -> std::map<int, draw_frame>
  76                 {
  77
  78                         std::map<int, class draw_frame> frames;
  79
  80                         try
  81                         {
  82                                 std::vector<int> indices;
  83
  84                                 BOOST_FOREACH(auto& layer, layers_)
  85                                 {
  86                                         frames[layer.first] = draw_frame::empty();
  87                                         indices.push_back(layer.first);
  88                                 }
  89
  90                                 aggregator_.translate_and_send();
  91
  92                                 // WORKAROUND: Compiler doesn't seem to like lambda.
  93                                 tbb::parallel_for_each(indices.begin(), indices.end(), [&](int index)
  94                                 {
  95                                         draw(index, format_desc, frames);
  96                                 });
  97                         }
  98                         catch(...)
  99                         {
 100                                 layers_.clear();
 101                                 CASPAR_LOG_CURRENT_EXCEPTION();
 102                         }
 103
 104
 105                         return frames;
 106                 });
 107
 108                 //frames_subject_ << frames;
 109
 110                 graph_->set_value("produce-time", frame_timer.elapsed()*format_desc.fps*0.5);
 111                 *monitor_subject_ << monitor::message("/profiler/time") % frame_timer.elapsed() % (1.0/format_desc.fps);
 112
 113                 return frames;
 114         }
 115
 116         void draw(int index, const video_format_desc& format_desc, std::map<int, draw_frame>& frames)
 117         {
 118                 auto& layer             = layers_[index];
 119                 auto& tween             = tweens_[index];
 120
 121                 auto frame  = layer.receive(format_desc);
 122                 auto frame1 = frame;
 123                 frame1.transform() *= tween.fetch_and_tick(1);
 124
 125                 if(format_desc.field_mode != core::field_mode::progressive)
 126                 {
 127                         auto frame2 = frame;
 128                         frame2.transform() *= tween.fetch_and_tick(1);
 129                         frame1 = core::draw_frame::interlace(frame1, frame2, format_desc.field_mode);
 130                 }
 131
 132                 frames[index] = frame1;
 133         }
 134
 135         layer& get_layer(int index)
 136         {
 137                 auto it = layers_.find(index);
 138                 if(it == std::end(layers_))
 139                 {
 140                         it = layers_.insert(std::make_pair(index, layer(index))).first;
 141                         it->second.monitor_output().attach_parent(monitor_subject_);
 142                 }
 143                 return it->second;
 144         }
 145
 146         std::future<void> apply_transforms(const std::vector<std::tuple<int, stage::transform_func_t, unsigned int, tweener>>& transforms)
 147         {
 148                 return executor_.begin_invoke([=]
 149                 {
 150                         BOOST_FOREACH(auto& transform, transforms)
 151                         {
 152                                 auto src = tweens_[std::get<0>(transform)].fetch();
 153                                 auto dst = std::get<1>(transform)(src);
 154                                 tweens_[std::get<0>(transform)] = tweened_transform(src, dst, std::get<2>(transform), std::get<3>(transform));
 155                         }
 156                 }, task_priority::high_priority);
 157         }
 158
 159         std::future<void> apply_transform(int index, const stage::transform_func_t& transform, unsigned int mix_duration, const tweener& tween)
 160         {
 161                 return executor_.begin_invoke([=]
 162                 {
 163                         auto src = tweens_[index].fetch();
 164                         auto dst = transform(src);
 165                         tweens_[index] = tweened_transform(src, dst, mix_duration, tween);
 166                 }, task_priority::high_priority);
 167         }
 168
 169         std::future<void> clear_transforms(int index)
 170         {
 171                 return executor_.begin_invoke([=]
 172                 {
 173                         tweens_.erase(index);
 174                 }, task_priority::high_priority);
 175         }
 176
 177         std::future<void> clear_transforms()
 178         {
 179                 return executor_.begin_invoke([=]
 180                 {
 181                         tweens_.clear();
 182                 }, task_priority::high_priority);
 183         }
 184
 185         std::future<void> load(int index, const spl::shared_ptr<frame_producer>& producer, bool preview, const boost::optional<int32_t>& auto_play_delta)
 186         {
 187                 return executor_.begin_invoke([=]
 188                 {
 189                         get_layer(index).load(producer, preview, auto_play_delta);
 190                 }, task_priority::high_priority);
 191         }
 192
 193         std::future<void> pause(int index)
 194         {
 195                 return executor_.begin_invoke([=]
 196                 {
 197                         get_layer(index).pause();
 198                 }, task_priority::high_priority);
 199         }
 200
 201         std::future<void> play(int index)
 202         {
 203                 return executor_.begin_invoke([=]
 204                 {
 205                         get_layer(index).play();
 206                 }, task_priority::high_priority);
 207         }
 208
 209         std::future<void> stop(int index)
 210         {
 211                 return executor_.begin_invoke([=]
 212                 {
 213                         get_layer(index).stop();
 214                 }, task_priority::high_priority);
 215         }
 216
 217         std::future<void> clear(int index)
 218         {
 219                 return executor_.begin_invoke([=]
 220                 {
 221                         layers_.erase(index);
 222                 }, task_priority::high_priority);
 223         }
 224
 225         std::future<void> clear()
 226         {
 227                 return executor_.begin_invoke([=]
 228                 {
 229                         layers_.clear();
 230                 }, task_priority::high_priority);
 231         }
 232
 233         std::future<void> swap_layers(stage& other)
 234         {
 235                 auto other_impl = other.impl_;
 236
 237                 if (other_impl.get() == this)
 238                 {
 239                         return make_ready_future();
 240                 }
 241
 242                 auto func = [=]
 243                 {
 244                         auto layers                     = layers_ | boost::adaptors::map_values;
 245                         auto other_layers       = other_impl->layers_ | boost::adaptors::map_values;
 246
 247                         BOOST_FOREACH(auto& layer, layers)
 248                                 layer.monitor_output().detach_parent();
 249
 250                         BOOST_FOREACH(auto& layer, other_layers)
 251                                 layer.monitor_output().detach_parent();
 252
 253                         std::swap(layers_, other_impl->layers_);
 254
 255                         BOOST_FOREACH(auto& layer, layers)
 256                                 layer.monitor_output().attach_parent(monitor_subject_);
 257
 258                         BOOST_FOREACH(auto& layer, other_layers)
 259                                 layer.monitor_output().attach_parent(monitor_subject_);
 260                 };
 261
 262                 return executor_.begin_invoke([=]
 263                 {
 264                         other_impl->executor_.invoke(func, task_priority::high_priority);
 265                 }, task_priority::high_priority);
 266         }
 267
 268         std::future<void> swap_layer(int index, int other_index)
 269         {
 270                 return executor_.begin_invoke([=]
 271                 {
 272                         std::swap(get_layer(index), get_layer(other_index));
 273                 }, task_priority::high_priority);
 274         }
 275
 276         std::future<void> swap_layer(int index, int other_index, stage& other)
 277         {
 278                 auto other_impl = other.impl_;
 279
 280                 if(other_impl.get() == this)
 281                         return swap_layer(index, other_index);
 282                 else
 283                 {
 284                         auto func = [=]
 285                         {
 286                                 auto& my_layer          = get_layer(index);
 287                                 auto& other_layer       = other_impl->get_layer(other_index);
 288
 289                                 my_layer.monitor_output().detach_parent();
 290                                 other_layer.monitor_output().detach_parent();
 291
 292                                 std::swap(my_layer, other_layer);
 293
 294                                 my_layer.monitor_output().attach_parent(monitor_subject_);
 295                                 other_layer.monitor_output().attach_parent(other_impl->monitor_subject_);
 296                         };
 297
 298                         return executor_.begin_invoke([=]
 299                         {
 300                                 other_impl->executor_.invoke(func, task_priority::high_priority);
 301                         }, task_priority::high_priority);
 302                 }
 303         }
 304
 305         std::future<std::shared_ptr<frame_producer>> foreground(int index)
 306         {
 307                 return executor_.begin_invoke([=]() -> std::shared_ptr<frame_producer>
 308                 {
 309                         return get_layer(index).foreground();
 310                 }, task_priority::high_priority);
 311         }
 312
 313         std::future<std::shared_ptr<frame_producer>> background(int index)
 314         {
 315                 return executor_.begin_invoke([=]() -> std::shared_ptr<frame_producer>
 316                 {
 317                         return get_layer(index).background();
 318                 }, task_priority::high_priority);
 319         }
 320
 321         std::future<boost::property_tree::wptree> info()
 322         {
 323                 return executor_.begin_invoke([this]() -> boost::property_tree::wptree
 324                 {
 325                         boost::property_tree::wptree info;
 326                         BOOST_FOREACH(auto& layer, layers_)
 327                                 info.add_child(L"layers.layer", layer.second.info())
 328                                         .add(L"index", layer.first);
 329                         return info;
 330                 }, task_priority::high_priority);
 331         }
 332
 333         std::future<boost::property_tree::wptree> info(int index)
 334         {
 335                 return executor_.begin_invoke([=]
 336                 {
 337                         return get_layer(index).info();
 338                 }, task_priority::high_priority);
 339         }
 340
 341         std::future<std::wstring> call(int index, const std::vector<std::wstring>& params)
 342         {
 343                 return flatten(executor_.begin_invoke([=]
 344                 {
 345                         return get_layer(index).foreground()->call(params).share();
 346                 }, task_priority::high_priority));
 347         }
 348
 349         void on_interaction(const interaction_event::ptr& event)
 350         {
 351                 executor_.begin_invoke([=]
 352                 {
 353                         aggregator_.offer(event);
 354                 }, task_priority::high_priority);
 355         }
 356
 357         boost::optional<interaction_target> collission_detect(double x, double y)
 358         {
 359                 BOOST_FOREACH(auto& layer, layers_ | boost::adaptors::reversed)
 360                 {
 361                         auto transform = tweens_[layer.first].fetch();
 362                         auto translated = translate(x, y, transform);
 363
 364                         if (translated.first >= 0.0
 365                                 && translated.first <= 1.0
 366                                 && translated.second >= 0.0
 367                                 && translated.second <= 1.0
 368                                 && layer.second.collides(translated.first, translated.second))
 369                         {
 370                                 return std::make_pair(transform, &layer.second);
 371                         }
 372                 }
 373
 374                 return boost::optional<interaction_target>();
 375         }
 376 };
 377
 378 stage::stage(spl::shared_ptr<diagnostics::graph> graph) : impl_(new impl(std::move(graph))){}
 379 std::future<std::wstring> stage::call(int index, const std::vector<std::wstring>& params){return impl_->call(index, params);}
 380 std::future<void> stage::apply_transforms(const std::vector<stage::transform_tuple_t>& transforms){ return impl_->apply_transforms(transforms); }
 381 std::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); }
 382 std::future<void> stage::clear_transforms(int index){ return impl_->clear_transforms(index); }
 383 std::future<void> stage::clear_transforms(){ return impl_->clear_transforms(); }
 384 std::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); }
 385 std::future<void> stage::pause(int index){ return impl_->pause(index); }
 386 std::future<void> stage::play(int index){ return impl_->play(index); }
 387 std::future<void> stage::stop(int index){ return impl_->stop(index); }
 388 std::future<void> stage::clear(int index){ return impl_->clear(index); }
 389 std::future<void> stage::clear(){ return impl_->clear(); }
 390 std::future<void> stage::swap_layers(stage& other){ return impl_->swap_layers(other); }
 391 std::future<void> stage::swap_layer(int index, int other_index){ return impl_->swap_layer(index, other_index); }
 392 std::future<void> stage::swap_layer(int index, int other_index, stage& other){ return impl_->swap_layer(index, other_index, other); }
 393 std::future<std::shared_ptr<frame_producer>> stage::foreground(int index) { return impl_->foreground(index); }
 394 std::future<std::shared_ptr<frame_producer>> stage::background(int index) { return impl_->background(index); }
 395 std::future<boost::property_tree::wptree> stage::info() const{ return impl_->info(); }
 396 std::future<boost::property_tree::wptree> stage::info(int index) const{ return impl_->info(index); }
 397 std::map<int, class draw_frame> stage::operator()(const video_format_desc& format_desc){return (*impl_)(format_desc);}
 398 monitor::subject& stage::monitor_output(){return *impl_->monitor_subject_;}
 399 //void stage::subscribe(const frame_observable::observer_ptr& o) {impl_->frames_subject_.subscribe(o);}
 400 //void stage::unsubscribe(const frame_observable::observer_ptr& o) {impl_->frames_subject_.unsubscribe(o);}
 401 void stage::on_interaction(const interaction_event::ptr& event) { impl_->on_interaction(event); }
 402 }}