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 \r
  50         std::map<int, safe_ptr<frame_consumer>> consumers_;\r
  51         typedef std::map<int, safe_ptr<frame_consumer>>::value_type layer_t;\r
  52         \r
  53         high_prec_timer timer_;\r
  54                 \r
  55 public:\r
  56         implementation(video_channel_context& video_channel) \r
  57                 : channel_(video_channel){}     \r
  58         \r
  59         void add(int index, safe_ptr<frame_consumer>&& consumer)\r
  60         {               \r
  61                 channel_.execution().invoke([&]\r
  62                 {\r
  63                         consumers_.erase(index);\r
  64                 });\r
  65 \r
  66                 consumer->initialize(channel_.get_format_desc());\r
  67 \r
  68                 channel_.execution().invoke([&]\r
  69                 {\r
  70                         consumers_.insert(std::make_pair(index, consumer));\r
  71 \r
  72                         CASPAR_LOG(info) << print() << L" " << consumer->print() << L" Added.";\r
  73                 });\r
  74         }\r
  75 \r
  76         void remove(int index)\r
  77         {\r
  78                 channel_.execution().invoke([&]\r
  79                 {\r
  80                         auto it = consumers_.find(index);\r
  81                         if(it != consumers_.end())\r
  82                         {\r
  83                                 CASPAR_LOG(info) << print() << L" " << it->second->print() << L" Removed.";\r
  84                                 consumers_.erase(it);\r
  85                         }\r
  86                 });\r
  87         }\r
  88                                                 \r
  89         void execute(const safe_ptr<read_frame>& frame)\r
  90         {                       \r
  91                 if(!has_synchronization_clock())\r
  92                         timer_.tick(1.0/channel_.get_format_desc().fps);\r
  93 \r
  94                 if(frame->image_size() != channel_.get_format_desc().size)\r
  95                 {\r
  96                         timer_.tick(1.0/channel_.get_format_desc().fps);\r
  97                         return;\r
  98                 }\r
  99                 \r
 100                 auto it = consumers_.begin();\r
 101                 while(it != consumers_.end())\r
 102                 {\r
 103                         auto consumer = it->second;\r
 104 \r
 105                         if(consumer->get_video_format_desc() != channel_.get_format_desc())\r
 106                                 consumer->initialize(channel_.get_format_desc());\r
 107 \r
 108                         if(consumer->send(frame))\r
 109                                 ++it;\r
 110                         else\r
 111                                 consumers_.erase(it++);\r
 112                 }\r
 113         }\r
 114 \r
 115 private:\r
 116         \r
 117         bool has_synchronization_clock()\r
 118         {\r
 119                 return std::any_of(consumers_.begin(), consumers_.end(), [](const decltype(*consumers_.begin())& p)\r
 120                 {\r
 121                         return p.second->has_synchronization_clock();\r
 122                 });\r
 123         }\r
 124         \r
 125         std::wstring print() const\r
 126         {\r
 127                 return L"output";\r
 128         }\r
 129 };\r
 130 \r
 131 output::output(video_channel_context& video_channel) : impl_(new implementation(video_channel)){}\r
 132 void output::add(int index, safe_ptr<frame_consumer>&& consumer){impl_->add(index, std::move(consumer));}\r
 133 void output::remove(int index){impl_->remove(index);}\r
 134 void output::execute(const safe_ptr<read_frame>& frame) {impl_->execute(frame); }\r
 135 }}