git.sesse.net Git - casparcg/blob - core/consumer/output.cpp

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\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 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 #include "../StdAfx.h"\r
  23 \r
  24 #ifdef _MSC_VER\r
  25 #pragma warning (disable : 4244)\r
  26 #endif\r
  27 \r
  28 #include "output.h"\r
  29 \r
  30 #include "frame_consumer.h"\r
  31 \r
  32 #include "../video_format.h"\r
  33 #include "../mixer/gpu/ogl_device.h"\r
  34 #include "../mixer/read_frame.h"\r
  35 \r
  36 #include <common/concurrency/executor.h>\r
  37 #include <common/diagnostics/graph.h>\r
  38 #include <common/prec_timer.h>\r
  39 #include <common/memory/memshfl.h>\r
  40 #include <common/env.h>\r
  41 \r
  42 #include <common/assert.h>\r
  43 #include <boost/circular_buffer.hpp>\r
  44 #include <boost/timer.hpp>\r
  45 #include <boost/range/algorithm.hpp>\r
  46 #include <boost/range/adaptors.hpp>\r
  47 #include <boost/property_tree/ptree.hpp>\r
  48 \r
  49 namespace caspar { namespace core {\r
  50         \r
  51 struct output::impl\r
  52 {               \r
  53         const int                                                                               channel_index_;\r
  54         const safe_ptr<diagnostics::graph>                              graph_;\r
  55         boost::timer                                                                    consume_timer_;\r
  56 \r
  57         video_format_desc                                                               format_desc_;\r
  58 \r
  59         std::map<int, safe_ptr<frame_consumer>>                 consumers_;\r
  60         \r
  61         prec_timer                                                                              sync_timer_;\r
  62 \r
  63         boost::circular_buffer<safe_ptr<read_frame>>    frames_;\r
  64 \r
  65         executor                                                                                executor_;\r
  66                 \r
  67 public:\r
  68         impl(const safe_ptr<diagnostics::graph>& graph, const video_format_desc& format_desc, int channel_index) \r
  69                 : channel_index_(channel_index)\r
  70                 , graph_(graph)\r
  71                 , format_desc_(format_desc)\r
  72                 , executor_(L"output")\r
  73         {\r
  74                 graph_->set_color("consume-time", diagnostics::color(1.0f, 0.4f, 0.0f, 0.8));\r
  75         }       \r
  76         \r
  77         void add(int index, safe_ptr<frame_consumer> consumer)\r
  78         {               \r
  79                 remove(index);\r
  80 \r
  81                 consumer = create_consumer_cadence_guard(consumer);\r
  82                 consumer->initialize(format_desc_, channel_index_);\r
  83 \r
  84                 executor_.invoke([&]\r
  85                 {\r
  86                         consumers_.insert(std::make_pair(index, consumer));\r
  87                         CASPAR_LOG(info) << print() << L" " << consumer->print() << L" Added.";\r
  88                 }, high_priority);\r
  89         }\r
  90 \r
  91         void add(const safe_ptr<frame_consumer>& consumer)\r
  92         {\r
  93                 add(consumer->index(), consumer);\r
  94         }\r
  95 \r
  96         void remove(int index)\r
  97         {               \r
  98                 // Destroy  consumer on calling thread:\r
  99                 std::shared_ptr<frame_consumer> old_consumer;\r
 100 \r
 101                 executor_.invoke([&]\r
 102                 {\r
 103                         auto it = consumers_.find(index);\r
 104                         if(it != consumers_.end())\r
 105                         {\r
 106                                 old_consumer = it->second;\r
 107                                 consumers_.erase(it);\r
 108                         }\r
 109                 }, high_priority);\r
 110 \r
 111                 if(old_consumer)\r
 112                 {\r
 113                         auto str = old_consumer->print();\r
 114                         old_consumer.reset();\r
 115                         CASPAR_LOG(info) << print() << L" " << str << L" Removed.";\r
 116                 }\r
 117         }\r
 118 \r
 119         void remove(const safe_ptr<frame_consumer>& consumer)\r
 120         {\r
 121                 remove(consumer->index());\r
 122         }\r
 123         \r
 124         void set_video_format_desc(const video_format_desc& format_desc)\r
 125         {\r
 126                 executor_.invoke([&]\r
 127                 {\r
 128                         auto it = consumers_.begin();\r
 129                         while(it != consumers_.end())\r
 130                         {                                               \r
 131                                 try\r
 132                                 {\r
 133                                         it->second->initialize(format_desc, channel_index_);\r
 134                                         ++it;\r
 135                                 }\r
 136                                 catch(...)\r
 137                                 {\r
 138                                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 139                                         CASPAR_LOG(info) << print() << L" " << it->second->print() << L" Removed.";\r
 140                                         consumers_.erase(it++);\r
 141                                 }\r
 142                         }\r
 143                         \r
 144                         format_desc_ = format_desc;\r
 145                         frames_.clear();\r
 146                 });\r
 147         }\r
 148 \r
 149         std::pair<int, int> minmax_buffer_depth() const\r
 150         {               \r
 151                 if(consumers_.empty())\r
 152                         return std::make_pair(0, 0);\r
 153                 \r
 154                 auto buffer_depths = consumers_ | \r
 155                                                          boost::adaptors::map_values | // std::function is MSVC workaround\r
 156                                                          boost::adaptors::transformed(std::function<int(const safe_ptr<frame_consumer>&)>([](const safe_ptr<frame_consumer>& x){return x->buffer_depth();})); \r
 157                 \r
 158 \r
 159                 return std::make_pair(*boost::range::min_element(buffer_depths), *boost::range::max_element(buffer_depths));\r
 160         }\r
 161 \r
 162         bool has_synchronization_clock() const\r
 163         {\r
 164                 return boost::range::count_if(consumers_ | boost::adaptors::map_values, [](const safe_ptr<frame_consumer>& x){return x->has_synchronization_clock();}) > 0;\r
 165         }\r
 166 \r
 167         void send(const std::pair<safe_ptr<read_frame>, std::shared_ptr<void>>& packet)\r
 168         {\r
 169                 executor_.begin_invoke([=]\r
 170                 {\r
 171                         try\r
 172                         {\r
 173                                 consume_timer_.restart();\r
 174 \r
 175                                 auto input_frame = packet.first;\r
 176 \r
 177                                 if(!has_synchronization_clock())\r
 178                                         sync_timer_.tick(1.0/format_desc_.fps);\r
 179 \r
 180                                 if(input_frame->image_data().size() != format_desc_.size)\r
 181                                 {\r
 182                                         sync_timer_.tick(1.0/format_desc_.fps);\r
 183                                         return;\r
 184                                 }\r
 185                                         \r
 186                                 auto minmax = minmax_buffer_depth();\r
 187 \r
 188                                 frames_.set_capacity(minmax.second - minmax.first + 1);\r
 189                                 frames_.push_back(input_frame);\r
 190 \r
 191                                 if(!frames_.full())\r
 192                                         return;\r
 193 \r
 194                                 auto it = consumers_.begin();\r
 195                                 while(it != consumers_.end())\r
 196                                 {\r
 197                                         auto consumer   = it->second;\r
 198                                         auto frame              = frames_.at(consumer->buffer_depth()-minmax.first);\r
 199                                                 \r
 200                                         try\r
 201                                         {\r
 202                                                 if(consumer->send(frame))\r
 203                                                         ++it;\r
 204                                                 else\r
 205                                                 {\r
 206                                                         CASPAR_LOG(info) << print() << L" " << it->second->print() << L" Removed.";\r
 207                                                         consumers_.erase(it++);\r
 208                                                 }\r
 209                                         }\r
 210                                         catch(...)\r
 211                                         {\r
 212                                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 213                                                 try\r
 214                                                 {\r
 215                                                         consumer->initialize(format_desc_, channel_index_);\r
 216                                                         if(consumer->send(frame))\r
 217                                                                 ++it;\r
 218                                                         else\r
 219                                                         {\r
 220                                                                 CASPAR_LOG(info) << print() << L" " << it->second->print() << L" Removed.";\r
 221                                                                 consumers_.erase(it++);\r
 222                                                         }\r
 223                                                 }\r
 224                                                 catch(...)\r
 225                                                 {\r
 226                                                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 227                                                         CASPAR_LOG(error) << "Failed to recover consumer: " << consumer->print() << L". Removing it.";\r
 228                                                         consumers_.erase(it++);\r
 229                                                 }\r
 230                                         }\r
 231                                 }\r
 232                                                 \r
 233                                 graph_->set_value("consume-time", consume_timer_.elapsed()*format_desc_.fps*0.5);\r
 234                         }\r
 235                         catch(...)\r
 236                         {\r
 237                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 238                         }\r
 239                 });\r
 240         }\r
 241 \r
 242         std::wstring print() const\r
 243         {\r
 244                 return L"output[" + boost::lexical_cast<std::wstring>(channel_index_) + L"]";\r
 245         }\r
 246 \r
 247         boost::unique_future<boost::property_tree::wptree> info()\r
 248         {\r
 249                 return std::move(executor_.begin_invoke([&]() -> boost::property_tree::wptree\r
 250                 {                       \r
 251                         boost::property_tree::wptree info;\r
 252                         BOOST_FOREACH(auto& consumer, consumers_)\r
 253                         {\r
 254                                 info.add_child(L"consumers.consumer", consumer.second->info())\r
 255                                         .add(L"index", consumer.first); \r
 256                         }\r
 257                         return info;\r
 258                 }, high_priority));\r
 259         }\r
 260 };\r
 261 \r
 262 output::output(const safe_ptr<diagnostics::graph>& graph, const video_format_desc& format_desc, int channel_index) : impl_(new impl(graph, format_desc, channel_index)){}\r
 263 void output::add(int index, const safe_ptr<frame_consumer>& consumer){impl_->add(index, consumer);}\r
 264 void output::add(const safe_ptr<frame_consumer>& consumer){impl_->add(consumer);}\r
 265 void output::remove(int index){impl_->remove(index);}\r
 266 void output::remove(const safe_ptr<frame_consumer>& consumer){impl_->remove(consumer);}\r
 267 void output::send(const std::pair<safe_ptr<read_frame>, std::shared_ptr<void>>& frame) {impl_->send(frame); }\r
 268 void output::set_video_format_desc(const video_format_desc& format_desc){impl_->set_video_format_desc(format_desc);}\r
 269 boost::unique_future<boost::property_tree::wptree> output::info() const{return impl_->info();}\r
 270 }}