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