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                         }       \r
  93                 }\r
  94 \r
  95                 send(is_running_, false);\r
  96                 done();\r
  97         }\r
  98                                 \r
  99         void load(int index, const safe_ptr<frame_producer>& producer, bool preview, int auto_play_delta)\r
 100         {\r
 101                 critical_section::scoped_lock lock(mutex_);\r
 102                 layers_[index].load(create_destroy_producer_proxy(producer), preview, auto_play_delta);\r
 103         }\r
 104 \r
 105         void pause(int index)\r
 106         {               \r
 107                 critical_section::scoped_lock lock(mutex_);\r
 108                 layers_[index].pause();\r
 109         }\r
 110 \r
 111         void play(int index)\r
 112         {               \r
 113                 critical_section::scoped_lock lock(mutex_);\r
 114                 layers_[index].play();\r
 115         }\r
 116 \r
 117         void stop(int index)\r
 118         {               \r
 119                 critical_section::scoped_lock lock(mutex_);\r
 120                 layers_[index].stop();\r
 121         }\r
 122 \r
 123         void clear(int index)\r
 124         {\r
 125                 critical_section::scoped_lock lock(mutex_);\r
 126                 layers_.erase(index);\r
 127         }\r
 128                 \r
 129         void clear()\r
 130         {\r
 131                 critical_section::scoped_lock lock(mutex_);\r
 132                 layers_.clear();\r
 133         }       \r
 134         \r
 135         void swap_layer(int index, size_t other_index)\r
 136         {\r
 137                 critical_section::scoped_lock lock(mutex_);\r
 138                 std::swap(layers_[index], layers_[other_index]);\r
 139         }\r
 140 \r
 141         void swap_layer(int index, size_t other_index, stage& other)\r
 142         {\r
 143                 if(other.impl_.get() == this)\r
 144                         swap_layer(index, other_index);\r
 145                 else\r
 146                 {                       \r
 147                         critical_section::scoped_lock lock1(mutex_);\r
 148                         critical_section::scoped_lock lock2(other.impl_->mutex_);\r
 149                         std::swap(layers_[index], other.impl_->layers_[other_index]);\r
 150                 }\r
 151         }\r
 152 \r
 153         void swap(stage& other)\r
 154         {\r
 155                 if(other.impl_.get() == this)\r
 156                         return;\r
 157                 \r
 158                 critical_section::scoped_lock lock1(mutex_);\r
 159                 critical_section::scoped_lock lock2(other.impl_->mutex_);\r
 160                 std::swap(layers_, other.impl_->layers_);\r
 161         }\r
 162 \r
 163         layer_status get_status(int index)\r
 164         {               \r
 165                 critical_section::scoped_lock lock(mutex_);\r
 166                 return layers_[index].status();\r
 167         }\r
 168         \r
 169         safe_ptr<frame_producer> foreground(int index)\r
 170         {\r
 171                 critical_section::scoped_lock lock(mutex_);\r
 172                 return layers_[index].foreground();\r
 173         }\r
 174         \r
 175         safe_ptr<frame_producer> background(int index)\r
 176         {\r
 177                 critical_section::scoped_lock lock(mutex_);\r
 178                 return layers_[index].background();\r
 179         }\r
 180 \r
 181         std::wstring print() const\r
 182         {\r
 183                 // C-TODO\r
 184                 return L"stage []";// + boost::lexical_cast<std::wstring>(channel_.index()) + L"]";\r
 185         }\r
 186 \r
 187 };\r
 188 \r
 189 stage::stage(target_t& target, const safe_ptr<semaphore>& semaphore) : impl_(new implementation(target, semaphore)){}\r
 190 void stage::swap(stage& other){impl_->swap(other);}\r
 191 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
 192 void stage::pause(int index){impl_->pause(index);}\r
 193 void stage::play(int index){impl_->play(index);}\r
 194 void stage::stop(int index){impl_->stop(index);}\r
 195 void stage::clear(int index){impl_->clear(index);}\r
 196 void stage::clear(){impl_->clear();}\r
 197 void stage::swap_layer(int index, size_t other_index){impl_->swap_layer(index, other_index);}\r
 198 void stage::swap_layer(int index, size_t other_index, stage& other){impl_->swap_layer(index, other_index, other);}\r
 199 layer_status stage::get_status(int index){return impl_->get_status(index);}\r
 200 safe_ptr<frame_producer> stage::foreground(size_t index) {return impl_->foreground(index);}\r
 201 safe_ptr<frame_producer> stage::background(size_t index) {return impl_->background(index);}\r
 202 }}