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