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 #include "../consumer/write_frame_consumer.h"
  32
  33 #include <common/executor.h>
  34 #include <common/future.h>
  35 #include <common/diagnostics/graph.h>
  36 #include <common/timer.h>
  37
  38 #include <core/frame/frame_transform.h>
  39
  40 #include <boost/property_tree/ptree.hpp>
  41
  42 #include <tbb/parallel_for_each.h>
  43
  44 #include <functional>
  45 #include <map>
  46 #include <vector>
  47 #include <future>
  48
  49 namespace caspar { namespace core {
  50
  51 struct stage::impl : public std::enable_shared_from_this<impl>
  52 {
  53         int                                                                                                                                             channel_index_;
  54         spl::shared_ptr<diagnostics::graph>                                                                             graph_;
  55         spl::shared_ptr<monitor::subject>                                                                               monitor_subject_        = spl::make_shared<monitor::subject>("/stage");
  56         std::map<int, layer>                                                                                                    layers_;
  57         std::map<int, tweened_transform>                                                                                tweens_;
  58         interaction_aggregator                                                                                                  aggregator_;
  59         // map of layer -> map of tokens (src ref) -> layer_consumer
  60         std::map<int, std::map<void*, spl::shared_ptr<write_frame_consumer>>>   layer_consumers_;
  61         executor                                                                                                                                executor_                       { L"stage " + boost::lexical_cast<std::wstring>(channel_index_) };
  62 public:
  63         impl(int channel_index, spl::shared_ptr<diagnostics::graph> graph)
  64                 : channel_index_(channel_index)
  65                 , graph_(std::move(graph))
  66                 , aggregator_([=] (double x, double y) { return collission_detect(x, y); })
  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 video_format_desc& format_desc)
  72         {
  73                 caspar::timer frame_timer;
  74
  75                 auto frames = executor_.invoke([=]() -> std::map<int, draw_frame>
  76                 {
  77
  78                         std::map<int, draw_frame> frames;
  79
  80                         try
  81                         {
  82                                 std::vector<int> indices;
  83
  84                                 for (auto& layer : layers_)
  85                                 {
  86                                         // Prevent race conditions in parallel for each later
  87                                         frames[layer.first] = draw_frame::empty();
  88                                         tweens_[layer.first];
  89                                         layer_consumers_[layer.first];
  90
  91                                         indices.push_back(layer.first);
  92                                 }
  93
  94                                 aggregator_.translate_and_send();
  95
  96                                 tbb::parallel_for_each(indices.begin(), indices.end(), [&](int index)
  97                                 {
  98                                         draw(index, format_desc, frames);
  99                                 });
 100                         }
 101                         catch(...)
 102                         {
 103                                 layers_.clear();
 104                                 CASPAR_LOG_CURRENT_EXCEPTION();
 105                         }
 106
 107
 108                         return frames;
 109                 });
 110
 111                 //frames_subject_ << frames;
 112
 113                 graph_->set_value("produce-time", frame_timer.elapsed()*format_desc.fps*0.5);
 114                 *monitor_subject_ << monitor::message("/profiler/time") % frame_timer.elapsed() % (1.0/format_desc.fps);
 115
 116                 return frames;
 117         }
 118
 119         void draw(int index, const video_format_desc& format_desc, std::map<int, draw_frame>& frames)
 120         {
 121                 auto& layer             = layers_[index];
 122                 auto& tween             = tweens_[index];
 123                 auto& consumers = layer_consumers_[index];
 124
 125                 auto frame  = layer.receive(format_desc);
 126
 127                 if (!consumers.empty())
 128                 {
 129                         auto consumer_it = consumers | boost::adaptors::map_values;
 130                         tbb::parallel_for_each(consumer_it.begin(), consumer_it.end(), [&](decltype(*consumer_it.begin()) layer_consumer)
 131                         {
 132                                 layer_consumer->send(frame);
 133                         });
 134                 }
 135
 136                 auto frame1 = frame;
 137
 138                 frame1.transform() *= tween.fetch_and_tick(1);
 139
 140                 if(format_desc.field_mode != core::field_mode::progressive)
 141                 {
 142                         auto frame2 = frame;
 143                         frame2.transform() *= tween.fetch_and_tick(1);
 144                         frame1 = core::draw_frame::interlace(frame1, frame2, format_desc.field_mode);
 145                 }
 146
 147                 frames[index] = frame1;
 148         }
 149
 150         layer& get_layer(int index)
 151         {
 152                 auto it = layers_.find(index);
 153                 if(it == std::end(layers_))
 154                 {
 155                         it = layers_.insert(std::make_pair(index, layer(index))).first;
 156                         it->second.monitor_output().attach_parent(monitor_subject_);
 157                 }
 158                 return it->second;
 159         }
 160
 161         std::future<void> apply_transforms(const std::vector<std::tuple<int, stage::transform_func_t, unsigned int, tweener>>& transforms)
 162         {
 163                 return executor_.begin_invoke([=]
 164                 {
 165                         for (auto& transform : transforms)
 166                         {
 167                                 auto& tween = tweens_[std::get<0>(transform)];
 168                                 auto src = tween.fetch();
 169                                 auto dst = std::get<1>(transform)(tween.dest());
 170                                 tweens_[std::get<0>(transform)] = tweened_transform(src, dst, std::get<2>(transform), std::get<3>(transform));
 171                         }
 172                 }, task_priority::high_priority);
 173         }
 174
 175         std::future<void> apply_transform(int index, const stage::transform_func_t& transform, unsigned int mix_duration, const tweener& tween)
 176         {
 177                 return executor_.begin_invoke([=]
 178                 {
 179                         auto src = tweens_[index].fetch();
 180                         auto dst = transform(src);
 181                         tweens_[index] = tweened_transform(src, dst, mix_duration, tween);
 182                 }, task_priority::high_priority);
 183         }
 184
 185         std::future<void> clear_transforms(int index)
 186         {
 187                 return executor_.begin_invoke([=]
 188                 {
 189                         tweens_.erase(index);
 190                 }, task_priority::high_priority);
 191         }
 192
 193         std::future<void> clear_transforms()
 194         {
 195                 return executor_.begin_invoke([=]
 196                 {
 197                         tweens_.clear();
 198                 }, task_priority::high_priority);
 199         }
 200
 201         std::future<frame_transform> get_current_transform(int index)
 202         {
 203                 return executor_.begin_invoke([=]
 204                 {
 205                         return tweens_[index].fetch();
 206                 }, task_priority::high_priority);
 207         }
 208
 209         std::future<void> load(int index, const spl::shared_ptr<frame_producer>& producer, bool preview, const boost::optional<int32_t>& auto_play_delta)
 210         {
 211                 return executor_.begin_invoke([=]
 212                 {
 213                         get_layer(index).load(producer, preview, auto_play_delta);
 214                 }, task_priority::high_priority);
 215         }
 216
 217         std::future<void> pause(int index)
 218         {
 219                 return executor_.begin_invoke([=]
 220                 {
 221                         get_layer(index).pause();
 222                 }, task_priority::high_priority);
 223         }
 224
 225         std::future<void> resume(int index)
 226         {
 227                 return executor_.begin_invoke([=]
 228                 {
 229                         get_layer(index).resume();
 230                 }, task_priority::high_priority);
 231         }
 232
 233         std::future<void> play(int index)
 234         {
 235                 return executor_.begin_invoke([=]
 236                 {
 237                         get_layer(index).play();
 238                 }, task_priority::high_priority);
 239         }
 240
 241         std::future<void> stop(int index)
 242         {
 243                 return executor_.begin_invoke([=]
 244                 {
 245                         get_layer(index).stop();
 246                 }, task_priority::high_priority);
 247         }
 248
 249         std::future<void> clear(int index)
 250         {
 251                 return executor_.begin_invoke([=]
 252                 {
 253                         layers_.erase(index);
 254                 }, task_priority::high_priority);
 255         }
 256
 257         std::future<void> clear()
 258         {
 259                 return executor_.begin_invoke([=]
 260                 {
 261                         layers_.clear();
 262                 }, task_priority::high_priority);
 263         }
 264
 265         std::future<void> swap_layers(stage& other, bool swap_transforms)
 266         {
 267                 auto other_impl = other.impl_;
 268
 269                 if (other_impl.get() == this)
 270                 {
 271                         return make_ready_future();
 272                 }
 273
 274                 auto func = [=]
 275                 {
 276                         auto layers                     = layers_ | boost::adaptors::map_values;
 277                         auto other_layers       = other_impl->layers_ | boost::adaptors::map_values;
 278
 279                         for (auto& layer : layers)
 280                                 layer.monitor_output().detach_parent();
 281
 282                         for (auto& layer : other_layers)
 283                                 layer.monitor_output().detach_parent();
 284
 285                         std::swap(layers_, other_impl->layers_);
 286
 287                         for (auto& layer : layers)
 288                                 layer.monitor_output().attach_parent(monitor_subject_);
 289
 290                         for (auto& layer : other_layers)
 291                                 layer.monitor_output().attach_parent(monitor_subject_);
 292
 293                         if (swap_transforms)
 294                                 std::swap(tweens_, other_impl->tweens_);
 295                 };
 296
 297                 return executor_.begin_invoke([=]
 298                 {
 299                         other_impl->executor_.invoke(func, task_priority::high_priority);
 300                 }, task_priority::high_priority);
 301         }
 302
 303         std::future<void> swap_layer(int index, int other_index, bool swap_transforms)
 304         {
 305                 return executor_.begin_invoke([=]
 306                 {
 307                         std::swap(get_layer(index), get_layer(other_index));
 308
 309                         if (swap_transforms)
 310                                 std::swap(tweens_[index], tweens_[other_index]);
 311                 }, task_priority::high_priority);
 312         }
 313
 314         std::future<void> swap_layer(int index, int other_index, stage& other, bool swap_transforms)
 315         {
 316                 auto other_impl = other.impl_;
 317
 318                 if(other_impl.get() == this)
 319                         return swap_layer(index, other_index, swap_transforms);
 320                 else
 321                 {
 322                         auto func = [=]
 323                         {
 324                                 auto& my_layer          = get_layer(index);
 325                                 auto& other_layer       = other_impl->get_layer(other_index);
 326
 327                                 my_layer.monitor_output().detach_parent();
 328                                 other_layer.monitor_output().detach_parent();
 329
 330                                 std::swap(my_layer, other_layer);
 331
 332                                 my_layer.monitor_output().attach_parent(monitor_subject_);
 333                                 other_layer.monitor_output().attach_parent(other_impl->monitor_subject_);
 334
 335                                 if (swap_transforms)
 336                                 {
 337                                         auto& my_tween          = tweens_[index];
 338                                         auto& other_tween       = other_impl->tweens_[other_index];
 339                                         std::swap(my_tween, other_tween);
 340                                 }
 341                         };
 342
 343                         return executor_.begin_invoke([=]
 344                         {
 345                                 other_impl->executor_.invoke(func, task_priority::high_priority);
 346                         }, task_priority::high_priority);
 347                 }
 348         }
 349
 350         void add_layer_consumer(void* token, int layer, const spl::shared_ptr<write_frame_consumer>& layer_consumer)
 351         {
 352                 executor_.begin_invoke([=]
 353                 {
 354                         layer_consumers_[layer].insert(std::make_pair(token, layer_consumer));
 355                 }, task_priority::high_priority);
 356         }
 357
 358         void remove_layer_consumer(void* token, int layer)
 359         {
 360                 executor_.begin_invoke([=]
 361                 {
 362                         auto& layer_map = layer_consumers_[layer];
 363                         layer_map.erase(token);
 364                         if (layer_map.empty())
 365                         {
 366                                 layer_consumers_.erase(layer);
 367                         }
 368                 }, task_priority::high_priority);
 369         }
 370
 371         std::future<std::shared_ptr<frame_producer>> foreground(int index)
 372         {
 373                 return executor_.begin_invoke([=]() -> std::shared_ptr<frame_producer>
 374                 {
 375                         return get_layer(index).foreground();
 376                 }, task_priority::high_priority);
 377         }
 378
 379         std::future<std::shared_ptr<frame_producer>> background(int index)
 380         {
 381                 return executor_.begin_invoke([=]() -> std::shared_ptr<frame_producer>
 382                 {
 383                         return get_layer(index).background();
 384                 }, task_priority::high_priority);
 385         }
 386
 387         std::future<boost::property_tree::wptree> info()
 388         {
 389                 return executor_.begin_invoke([this]() -> boost::property_tree::wptree
 390                 {
 391                         boost::property_tree::wptree info;
 392                         for (auto& layer : layers_)
 393                                 info.add_child(L"layers.layer", layer.second.info())
 394                                         .add(L"index", layer.first);
 395                         return info;
 396                 }, task_priority::high_priority);
 397         }
 398
 399         std::future<boost::property_tree::wptree> info(int index)
 400         {
 401                 return executor_.begin_invoke([=]
 402                 {
 403                         return get_layer(index).info();
 404                 }, task_priority::high_priority);
 405         }
 406
 407         std::future<boost::property_tree::wptree> delay_info()
 408         {
 409                 return std::move(executor_.begin_invoke([this]() -> boost::property_tree::wptree
 410                 {
 411                         boost::property_tree::wptree info;
 412
 413                         for (auto& layer : layers_)
 414                                 info.add_child(L"layer", layer.second.delay_info()).add(L"index", layer.first);
 415
 416                         return info;
 417                 }, task_priority::high_priority));
 418         }
 419
 420         std::future<boost::property_tree::wptree> delay_info(int index)
 421         {
 422                 return std::move(executor_.begin_invoke([=]() -> boost::property_tree::wptree
 423                 {
 424                         return get_layer(index).delay_info();
 425                 }, task_priority::high_priority));
 426         }
 427
 428         std::future<std::wstring> call(int index, const std::vector<std::wstring>& params)
 429         {
 430                 return flatten(executor_.begin_invoke([=]
 431                 {
 432                         return get_layer(index).foreground()->call(params).share();
 433                 }, task_priority::high_priority));
 434         }
 435
 436         void on_interaction(const interaction_event::ptr& event)
 437         {
 438                 executor_.begin_invoke([=]
 439                 {
 440                         aggregator_.offer(event);
 441                 }, task_priority::high_priority);
 442         }
 443
 444         boost::optional<interaction_target> collission_detect(double x, double y)
 445         {
 446                 for (auto& layer : layers_ | boost::adaptors::reversed)
 447                 {
 448                         auto transform = tweens_[layer.first].fetch();
 449                         auto translated = translate(x, y, transform);
 450
 451                         if (translated.first >= 0.0
 452                                 && translated.first <= 1.0
 453                                 && translated.second >= 0.0
 454                                 && translated.second <= 1.0
 455                                 && layer.second.collides(translated.first, translated.second))
 456                         {
 457                                 return std::make_pair(transform, static_cast<interaction_sink*>(&layer.second));
 458                         }
 459                 }
 460
 461                 return boost::optional<interaction_target>();
 462         }
 463 };
 464
 465 stage::stage(int channel_index, spl::shared_ptr<diagnostics::graph> graph) : impl_(new impl(channel_index, std::move(graph))){}
 466 std::future<std::wstring> stage::call(int index, const std::vector<std::wstring>& params){return impl_->call(index, params);}
 467 std::future<void> stage::apply_transforms(const std::vector<stage::transform_tuple_t>& transforms){ return impl_->apply_transforms(transforms); }
 468 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); }
 469 std::future<void> stage::clear_transforms(int index){ return impl_->clear_transforms(index); }
 470 std::future<void> stage::clear_transforms(){ return impl_->clear_transforms(); }
 471 std::future<frame_transform> stage::get_current_transform(int index){ return impl_->get_current_transform(index); }
 472 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); }
 473 std::future<void> stage::pause(int index){ return impl_->pause(index); }
 474 std::future<void> stage::resume(int index){ return impl_->resume(index); }
 475 std::future<void> stage::play(int index){ return impl_->play(index); }
 476 std::future<void> stage::stop(int index){ return impl_->stop(index); }
 477 std::future<void> stage::clear(int index){ return impl_->clear(index); }
 478 std::future<void> stage::clear(){ return impl_->clear(); }
 479 std::future<void> stage::swap_layers(stage& other, bool swap_transforms){ return impl_->swap_layers(other, swap_transforms); }
 480 std::future<void> stage::swap_layer(int index, int other_index, bool swap_transforms){ return impl_->swap_layer(index, other_index, swap_transforms); }
 481 std::future<void> stage::swap_layer(int index, int other_index, stage& other, bool swap_transforms){ return impl_->swap_layer(index, other_index, other, swap_transforms); }
 482 void stage::add_layer_consumer(void* token, int layer, const spl::shared_ptr<write_frame_consumer>& layer_consumer){ impl_->add_layer_consumer(token, layer, layer_consumer); }
 483 void stage::remove_layer_consumer(void* token, int layer){ impl_->remove_layer_consumer(token, layer); }std::future<std::shared_ptr<frame_producer>> stage::foreground(int index) { return impl_->foreground(index); }
 484 std::future<std::shared_ptr<frame_producer>> stage::background(int index) { return impl_->background(index); }
 485 std::future<boost::property_tree::wptree> stage::info() const{ return impl_->info(); }
 486 std::future<boost::property_tree::wptree> stage::info(int index) const{ return impl_->info(index); }
 487 std::future<boost::property_tree::wptree> stage::delay_info() const{ return impl_->delay_info(); }
 488 std::future<boost::property_tree::wptree> stage::delay_info(int index) const{ return impl_->delay_info(index); }
 489 std::map<int, draw_frame> stage::operator()(const video_format_desc& format_desc){ return (*impl_)(format_desc); }
 490 monitor::subject& stage::monitor_output(){return *impl_->monitor_subject_;}
 491 void stage::on_interaction(const interaction_event::ptr& event) { impl_->on_interaction(event); }
 492 }}