git.sesse.net Git - casparcg/blob - core/producer/frame_producer_device.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 "frame_producer_device.h"\r
  24 \r
  25 #include "../video_channel_context.h"\r
  26 \r
  27 #include "layer.h"\r
  28 \r
  29 #include <core/producer/frame/basic_frame.h>\r
  30 #include <core/producer/frame/frame_factory.h>\r
  31 \r
  32 #include <common/diagnostics/graph.h>\r
  33 #include <common/concurrency/executor.h>\r
  34 \r
  35 #include <boost/timer.hpp>\r
  36 \r
  37 #include <tbb/parallel_for.h>\r
  38 \r
  39 #include <map>\r
  40 \r
  41 namespace caspar { namespace core {\r
  42                 \r
  43 void destroy_producer(safe_ptr<frame_producer>& producer)\r
  44 {\r
  45         if(!producer.unique())\r
  46                 CASPAR_LOG(warning) << producer->print() << L" Not destroyed on safe asynchronous destruction thread.";\r
  47                 \r
  48         producer = frame_producer::empty();\r
  49 }\r
  50 \r
  51 class destroy_producer_proxy : public frame_producer\r
  52 {\r
  53         safe_ptr<frame_producer> producer_;\r
  54         executor& destroy_context_;\r
  55 public:\r
  56         destroy_producer_proxy(executor& destroy_context, const safe_ptr<frame_producer>& producer) \r
  57                 : producer_(producer)\r
  58                 , destroy_context_(destroy_context){}\r
  59 \r
  60         ~destroy_producer_proxy()\r
  61         {               \r
  62                 if(destroy_context_.size() > 4)\r
  63                         CASPAR_LOG(error) << L" Potential destroyer deadlock.";\r
  64 \r
  65                 destroy_context_.begin_invoke(std::bind(&destroy_producer, std::move(producer_)));\r
  66         }\r
  67 \r
  68         virtual safe_ptr<basic_frame>           receive()                                                                                                               {return core::receive(producer_);}\r
  69         virtual std::wstring                            print() const                                                                                                   {return producer_->print();}\r
  70         virtual void                                            param(const std::wstring& str)                                                                  {producer_->param(str);}\r
  71         virtual safe_ptr<frame_producer>        get_following_producer() const                                                                  {return producer_->get_following_producer();}\r
  72         virtual void                                            set_leading_producer(const safe_ptr<frame_producer>& producer)  {producer_->set_leading_producer(producer);}\r
  73 };\r
  74 \r
  75 struct frame_producer_device::implementation : boost::noncopyable\r
  76 {               \r
  77         std::map<int, layer>                                            layers_;                \r
  78         typedef std::map<int, layer>::value_type        layer_t;\r
  79         \r
  80         safe_ptr<diagnostics::graph>                            diag_;\r
  81         boost::timer                                                            frame_timer_;\r
  82         boost::timer                                                            tick_timer_;\r
  83         boost::timer                                                            output_timer_;\r
  84         \r
  85         video_channel_context&                                          channel_;\r
  86 public:\r
  87         implementation(video_channel_context& video_channel)  \r
  88                 : diag_(diagnostics::create_graph(std::string("frame_producer_device")))\r
  89                 , channel_(video_channel)\r
  90         {\r
  91                 diag_->add_guide("frame-time", 0.5f);   \r
  92                 diag_->set_color("frame-time", diagnostics::color(1.0f, 0.0f, 0.0f));\r
  93                 diag_->set_color("tick-time", diagnostics::color(0.1f, 0.7f, 0.8f));    \r
  94         }\r
  95                                                 \r
  96         std::map<int, safe_ptr<basic_frame>> operator()()\r
  97         {       \r
  98                 frame_timer_.restart();\r
  99                 \r
 100                 std::map<int, safe_ptr<basic_frame>> frames;\r
 101 \r
 102                 // Allocate placeholders.\r
 103                 std::for_each(layers_.begin(), layers_.end(), [&](layer_t& layer)\r
 104                 {\r
 105                         frames[layer.first] = basic_frame::empty();\r
 106                 });\r
 107 \r
 108                 // Render layers\r
 109                 tbb::parallel_for_each(layers_.begin(), layers_.end(), [&](layer_t& layer)\r
 110                 {\r
 111                         frames[layer.first] = layer.second.receive();\r
 112                 });\r
 113                 \r
 114                 diag_->update_value("frame-time", frame_timer_.elapsed()*channel_.format_desc.fps*0.5);\r
 115 \r
 116                 diag_->update_value("tick-time", tick_timer_.elapsed()*channel_.format_desc.fps*0.5);\r
 117                 tick_timer_.restart();\r
 118 \r
 119                 return frames;\r
 120         }\r
 121 \r
 122         void load(int index, const safe_ptr<frame_producer>& producer, bool preview)\r
 123         {\r
 124                 channel_.execution.invoke([&]{layers_[index].load(make_safe<destroy_producer_proxy>(channel_.destruction, producer), preview);});\r
 125         }\r
 126 \r
 127         void pause(int index)\r
 128         {               \r
 129                 channel_.execution.invoke([&]{layers_[index].pause();});\r
 130         }\r
 131 \r
 132         void play(int index)\r
 133         {               \r
 134                 channel_.execution.invoke([&]{layers_[index].play();});\r
 135         }\r
 136 \r
 137         void stop(int index)\r
 138         {               \r
 139                 channel_.execution.invoke([&]{layers_[index].stop();});\r
 140         }\r
 141 \r
 142         void clear(int index)\r
 143         {\r
 144                 channel_.execution.invoke([&]{layers_.erase(index);});\r
 145         }\r
 146                 \r
 147         void clear()\r
 148         {\r
 149                 channel_.execution.invoke([&]{layers_.clear();});\r
 150         }       \r
 151         \r
 152         void swap_layer(int index, size_t other_index)\r
 153         {\r
 154                 channel_.execution.invoke([&]{layers_[index].swap(layers_[other_index]);});\r
 155         }\r
 156 \r
 157         void swap_layer(int index, size_t other_index, frame_producer_device& other)\r
 158         {\r
 159                 if(other.impl_.get() == this)\r
 160                         swap_layer(index, other_index);\r
 161                 else\r
 162                 {\r
 163                         if(channel_.format_desc != other.impl_->channel_.format_desc)\r
 164                                 BOOST_THROW_EXCEPTION(not_supported() << msg_info("Cannot swap between channels with different formats."));\r
 165 \r
 166                         auto func = [&]{layers_[index].swap(other.impl_->layers_[other_index]);};\r
 167                 \r
 168                         channel_.execution.invoke([&]{other.impl_->channel_.execution.invoke(func);});\r
 169                 }\r
 170         }\r
 171 \r
 172         void swap(frame_producer_device& other)\r
 173         {\r
 174                 if(other.impl_.get() == this)\r
 175                         return;\r
 176 \r
 177                 if(channel_.format_desc != other.impl_->channel_.format_desc)\r
 178                         BOOST_THROW_EXCEPTION(not_supported() << msg_info("Cannot swap between channels with different formats."));\r
 179 \r
 180                 auto func = [&]\r
 181                 {\r
 182                         auto sel_first = [](const std::pair<int, layer>& pair){return pair.first;};\r
 183 \r
 184                         std::set<int> indices;\r
 185                         auto inserter = std::inserter(indices, indices.begin());\r
 186 \r
 187                         std::transform(layers_.begin(), layers_.end(), inserter, sel_first);\r
 188                         std::transform(other.impl_->layers_.begin(), other.impl_->layers_.end(), inserter, sel_first);\r
 189 \r
 190                         std::for_each(indices.begin(), indices.end(), [&](int index)\r
 191                         {\r
 192                                 layers_[index].swap(other.impl_->layers_[index]);\r
 193                         });                                     \r
 194                 };\r
 195                 \r
 196                 channel_.execution.invoke([&]{other.impl_->channel_.execution.invoke(func);});\r
 197         }\r
 198         \r
 199         boost::unique_future<safe_ptr<frame_producer>> foreground(int index)\r
 200         {\r
 201                 return channel_.execution.begin_invoke([=]{return layers_[index].foreground();});\r
 202         }\r
 203         \r
 204         boost::unique_future<safe_ptr<frame_producer>> background(int index)\r
 205         {\r
 206                 return channel_.execution.begin_invoke([=]{return layers_[index].background();});\r
 207         }\r
 208 };\r
 209 \r
 210 frame_producer_device::frame_producer_device(video_channel_context& video_channel) : impl_(new implementation(video_channel)){}\r
 211 void frame_producer_device::swap(frame_producer_device& other){impl_->swap(other);}\r
 212 void frame_producer_device::load(int index, const safe_ptr<frame_producer>& producer, bool preview){impl_->load(index, producer, preview);}\r
 213 void frame_producer_device::pause(int index){impl_->pause(index);}\r
 214 void frame_producer_device::play(int index){impl_->play(index);}\r
 215 void frame_producer_device::stop(int index){impl_->stop(index);}\r
 216 void frame_producer_device::clear(int index){impl_->clear(index);}\r
 217 void frame_producer_device::clear(){impl_->clear();}\r
 218 void frame_producer_device::swap_layer(int index, size_t other_index){impl_->swap_layer(index, other_index);}\r
 219 void frame_producer_device::swap_layer(int index, size_t other_index, frame_producer_device& other){impl_->swap_layer(index, other_index, other);}\r
 220 boost::unique_future<safe_ptr<frame_producer>> frame_producer_device::foreground(size_t index) {return impl_->foreground(index);}\r
 221 boost::unique_future<safe_ptr<frame_producer>> frame_producer_device::background(size_t index) {return impl_->background(index);}\r
 222 std::map<int, safe_ptr<basic_frame>> frame_producer_device::operator()(){return (*impl_)();}\r
 223 }}