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