git.sesse.net Git - casparcg/blob - core/producer/stage.cpp

   1 /*\r
   2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 *  This file is part of CasparCG.\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 */\r
  20 \r
  21 #include "../StdAfx.h"\r
  22 \r
  23 #include "stage.h"\r
  24 \r
  25 #include "layer.h"\r
  26 \r
  27 #include <core/producer/frame/basic_frame.h>\r
  28 #include <core/producer/frame/frame_factory.h>\r
  29 \r
  30 #include <common/concurrency/executor.h>\r
  31 #include <common/utility/move_on_copy.h>\r
  32 \r
  33 #include <boost/foreach.hpp>\r
  34 \r
  35 #include <agents.h>\r
  36 #include <ppl.h>\r
  37 \r
  38 #include <map>\r
  39 #include <set>\r
  40 \r
  41 using namespace Concurrency;\r
  42 \r
  43 namespace caspar { namespace core {\r
  44 \r
  45 struct stage::implementation : public agent, public boost::noncopyable\r
  46 {               \r
  47         overwrite_buffer<bool>                                          is_running_;\r
  48         Concurrency::critical_section                           mutex_;\r
  49         stage::target_t&                                                        target_;\r
  50         std::map<int, layer>                                            layers_;        \r
  51         safe_ptr<semaphore>                                                     semaphore_;\r
  52 public:\r
  53         implementation(stage::target_t& target, const safe_ptr<semaphore>& semaphore)  \r
  54                 : target_(target)\r
  55                 , semaphore_(semaphore)\r
  56         {\r
  57                 start();\r
  58         }\r
  59 \r
  60         ~implementation()\r
  61         {\r
  62                 send(is_running_, false);\r
  63                 semaphore_->release();\r
  64                 agent::wait(this);\r
  65         }\r
  66 \r
  67         virtual void run()\r
  68         {\r
  69                 send(is_running_, true);\r
  70                 while(is_running_.value())\r
  71                 {\r
  72                         try\r
  73                         {\r
  74                                 std::map<int, safe_ptr<basic_frame>> frames;\r
  75                                 {\r
  76                                         critical_section::scoped_lock lock(mutex_);\r
  77                 \r
  78                                         BOOST_FOREACH(auto& layer, layers_)                     \r
  79                                                 frames[layer.first] = basic_frame::empty();     \r
  80 \r
  81                                         Concurrency::parallel_for_each(layers_.begin(), layers_.end(), [&](std::map<int, layer>::value_type& layer) \r
  82                                         {\r
  83                                                 frames[layer.first] = layer.second.receive();   \r
  84                                         });\r
  85                                 }\r
  86 \r
  87                                 send(target_, make_safe<message<decltype(frames)>>(frames, token(semaphore_)));\r
  88                         }\r
  89                         catch(...)\r
  90                         {\r
  91                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
  92                                 Concurrency::wait(20);\r
  93                         }       \r
  94                 }\r
  95 \r
  96                 send(is_running_, false);\r
  97                 done();\r
  98         }\r
  99                                 \r
 100         void load(int index, const safe_ptr<frame_producer>& producer, bool preview, int auto_play_delta)\r
 101         {\r
 102                 critical_section::scoped_lock lock(mutex_);\r
 103                 layers_[index].load(producer, preview, auto_play_delta);\r
 104         }\r
 105 \r
 106         void pause(int index)\r
 107         {               \r
 108                 critical_section::scoped_lock lock(mutex_);\r
 109                 layers_[index].pause();\r
 110         }\r
 111 \r
 112         void play(int index)\r
 113         {               \r
 114                 critical_section::scoped_lock lock(mutex_);\r
 115                 layers_[index].play();\r
 116         }\r
 117 \r
 118         void stop(int index)\r
 119         {               \r
 120                 critical_section::scoped_lock lock(mutex_);\r
 121                 layers_[index].stop();\r
 122         }\r
 123 \r
 124         void clear(int index)\r
 125         {\r
 126                 critical_section::scoped_lock lock(mutex_);\r
 127                 layers_.erase(index);\r
 128         }\r
 129                 \r
 130         void clear()\r
 131         {\r
 132                 critical_section::scoped_lock lock(mutex_);\r
 133                 layers_.clear();\r
 134         }       \r
 135         \r
 136         void swap_layer(int index, size_t other_index)\r
 137         {\r
 138                 critical_section::scoped_lock lock(mutex_);\r
 139                 std::swap(layers_[index], layers_[other_index]);\r
 140         }\r
 141 \r
 142         void swap_layer(int index, size_t other_index, stage& other)\r
 143         {\r
 144                 if(other.impl_.get() == this)\r
 145                         swap_layer(index, other_index);\r
 146                 else\r
 147                 {                       \r
 148                         critical_section::scoped_lock lock1(mutex_);\r
 149                         critical_section::scoped_lock lock2(other.impl_->mutex_);\r
 150                         std::swap(layers_[index], other.impl_->layers_[other_index]);\r
 151                 }\r
 152         }\r
 153 \r
 154         void swap(stage& other)\r
 155         {\r
 156                 if(other.impl_.get() == this)\r
 157                         return;\r
 158                 \r
 159                 critical_section::scoped_lock lock1(mutex_);\r
 160                 critical_section::scoped_lock lock2(other.impl_->mutex_);\r
 161                 std::swap(layers_, other.impl_->layers_);\r
 162         }\r
 163 \r
 164         layer_status get_status(int index)\r
 165         {               \r
 166                 critical_section::scoped_lock lock(mutex_);\r
 167                 return layers_[index].status();\r
 168         }\r
 169         \r
 170         safe_ptr<frame_producer> foreground(int index)\r
 171         {\r
 172                 critical_section::scoped_lock lock(mutex_);\r
 173                 return layers_[index].foreground();\r
 174         }\r
 175         \r
 176         safe_ptr<frame_producer> background(int index)\r
 177         {\r
 178                 critical_section::scoped_lock lock(mutex_);\r
 179                 return layers_[index].background();\r
 180         }\r
 181 \r
 182         std::wstring print() const\r
 183         {\r
 184                 // C-TODO\r
 185                 return L"stage []";// + boost::lexical_cast<std::wstring>(channel_.index()) + L"]";\r
 186         }\r
 187 \r
 188 };\r
 189 \r
 190 stage::stage(target_t& target, const safe_ptr<semaphore>& semaphore) : impl_(new implementation(target, semaphore)){}\r
 191 void stage::swap(stage& other){impl_->swap(other);}\r
 192 void stage::load(int index, const safe_ptr<frame_producer>& producer, bool preview, int auto_play_delta){impl_->load(index, producer, preview, auto_play_delta);}\r
 193 void stage::pause(int index){impl_->pause(index);}\r
 194 void stage::play(int index){impl_->play(index);}\r
 195 void stage::stop(int index){impl_->stop(index);}\r
 196 void stage::clear(int index){impl_->clear(index);}\r
 197 void stage::clear(){impl_->clear();}\r
 198 void stage::swap_layer(int index, size_t other_index){impl_->swap_layer(index, other_index);}\r
 199 void stage::swap_layer(int index, size_t other_index, stage& other){impl_->swap_layer(index, other_index, other);}\r
 200 layer_status stage::get_status(int index){return impl_->get_status(index);}\r
 201 safe_ptr<frame_producer> stage::foreground(size_t index) {return impl_->foreground(index);}\r
 202 safe_ptr<frame_producer> stage::background(size_t index) {return impl_->background(index);}\r
 203 }}