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_channel_context.h"\r
  30 \r
  31 #include "../video_format.h"\r
  32 #include "../mixer/gpu/ogl_device.h"\r
  33 #include "../mixer/read_frame.h"\r
  34 \r
  35 #include <common/concurrency/executor.h>\r
  36 #include <common/utility/assert.h>\r
  37 #include <common/utility/timer.h>\r
  38 #include <common/memory/memshfl.h>\r
  39 \r
  40 #include <tbb/mutex.h>\r
  41 \r
  42 namespace caspar { namespace core {\r
  43 \r
  44 struct output::implementation\r
  45 {       \r
  46         typedef std::pair<safe_ptr<read_frame>, safe_ptr<read_frame>> fill_and_key;\r
  47         \r
  48         video_channel_context&          channel_;\r
  49         const std::function<void()> restart_channel_;\r
  50 \r
  51         std::map<int, safe_ptr<frame_consumer>> consumers_;\r
  52         typedef std::map<int, safe_ptr<frame_consumer>>::value_type layer_t;\r
  53         \r
  54         high_prec_timer timer_;\r
  55                 \r
  56 public:\r
  57         implementation(video_channel_context& video_channel, const std::function<void()>& restart_channel) \r
  58                 : channel_(video_channel)\r
  59                 , restart_channel_(restart_channel)\r
  60         {\r
  61         }       \r
  62         \r
  63         void add(int index, safe_ptr<frame_consumer>&& consumer)\r
  64         {               \r
  65                 channel_.execution().invoke([&]\r
  66                 {\r
  67                         consumers_.erase(index);\r
  68                 });\r
  69 \r
  70                 consumer->initialize(channel_.get_format_desc());\r
  71 \r
  72                 channel_.execution().invoke([&]\r
  73                 {\r
  74                         consumers_.insert(std::make_pair(index, consumer));\r
  75 \r
  76                         CASPAR_LOG(info) << print() << L" " << consumer->print() << L" Added.";\r
  77                 });\r
  78         }\r
  79 \r
  80         void remove(int index)\r
  81         {\r
  82                 channel_.execution().invoke([&]\r
  83                 {\r
  84                         auto it = consumers_.find(index);\r
  85                         if(it != consumers_.end())\r
  86                         {\r
  87                                 CASPAR_LOG(info) << print() << L" " << it->second->print() << L" Removed.";\r
  88                                 consumers_.erase(it);\r
  89                         }\r
  90                 });\r
  91         }\r
  92                                                 \r
  93         void execute(const safe_ptr<read_frame>& frame)\r
  94         {                       \r
  95                 if(!has_synchronization_clock())\r
  96                         timer_.tick(1.0/channel_.get_format_desc().fps);\r
  97 \r
  98                 if(frame->image_size() != channel_.get_format_desc().size)\r
  99                 {\r
 100                         timer_.tick(1.0/channel_.get_format_desc().fps);\r
 101                         return;\r
 102                 }\r
 103                 \r
 104                 auto it = consumers_.begin();\r
 105                 while(it != consumers_.end())\r
 106                 {\r
 107                         auto consumer = it->second;\r
 108 \r
 109                         if(consumer->get_video_format_desc() != channel_.get_format_desc())\r
 110                                 consumer->initialize(channel_.get_format_desc());\r
 111 \r
 112                         try\r
 113                         {\r
 114                                 if(consumer->send(frame))\r
 115                                         ++it;\r
 116                                 else\r
 117                                         consumers_.erase(it++);\r
 118                         }\r
 119                         catch(...)\r
 120                         {\r
 121                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 122                                 CASPAR_LOG(warning) << "Trying to restart consumer: " << consumer->print() << L".";\r
 123                                 try\r
 124                                 {\r
 125                                         consumer->initialize(channel_.get_format_desc());\r
 126                                         consumer->send(frame);\r
 127                                 }\r
 128                                 catch(...)\r
 129                                 {       \r
 130                                         CASPAR_LOG_CURRENT_EXCEPTION(); \r
 131                                         CASPAR_LOG(warning) << "Consumer restart failed, trying to restart channel: " << consumer->print() << L".";     \r
 132 \r
 133                                         try\r
 134                                         {\r
 135                                                 restart_channel_();\r
 136                                                 consumer->initialize(channel_.get_format_desc());\r
 137                                                 consumer->send(frame);\r
 138                                         }\r
 139                                         catch(...)\r
 140                                         {\r
 141                                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 142                                                 CASPAR_LOG(error) << "Failed to recover consumer: " << consumer->print() << L". Removing it.";\r
 143                                                 consumers_.erase(it++);\r
 144                                         }\r
 145                                 }\r
 146                         }\r
 147                 }\r
 148         }\r
 149 \r
 150 private:\r
 151         \r
 152         bool has_synchronization_clock()\r
 153         {\r
 154                 return std::any_of(consumers_.begin(), consumers_.end(), [](const decltype(*consumers_.begin())& p)\r
 155                 {\r
 156                         return p.second->has_synchronization_clock();\r
 157                 });\r
 158         }\r
 159         \r
 160         std::wstring print() const\r
 161         {\r
 162                 return L"output";\r
 163         }\r
 164 };\r
 165 \r
 166 output::output(video_channel_context& video_channel, const std::function<void()>& restart_channel) : impl_(new implementation(video_channel, restart_channel)){}\r
 167 void output::add(int index, safe_ptr<frame_consumer>&& consumer){impl_->add(index, std::move(consumer));}\r
 168 void output::remove(int index){impl_->remove(index);}\r
 169 void output::execute(const safe_ptr<read_frame>& frame) {impl_->execute(frame); }\r
 170 }}