git.sesse.net Git - casparcg/blob - core/producer/separated/separated_producer.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 #include "../../monitor/monitor.h"\r
  25 \r
  26 #include "separated_producer.h"\r
  27 \r
  28 #include <core/producer/frame/basic_frame.h>\r
  29 \r
  30 #include <tbb/parallel_invoke.h>\r
  31 \r
  32 namespace caspar { namespace core {     \r
  33 \r
  34 struct separated_producer : public frame_producer\r
  35 {               \r
  36         monitor::subject                        monitor_subject_;\r
  37         monitor::subject                        key_monitor_subject_;\r
  38 \r
  39         safe_ptr<frame_producer>        fill_producer_;\r
  40         safe_ptr<frame_producer>        key_producer_;\r
  41         safe_ptr<basic_frame>           fill_;\r
  42         safe_ptr<basic_frame>           key_;\r
  43         safe_ptr<basic_frame>           last_frame_;\r
  44                 \r
  45         explicit separated_producer(const safe_ptr<frame_producer>& fill, const safe_ptr<frame_producer>& key) \r
  46                 : monitor_subject_("")\r
  47                 , key_monitor_subject_("/keyer")\r
  48                 , fill_producer_(fill)\r
  49                 , key_producer_(key)\r
  50                 , fill_(core::basic_frame::late())\r
  51                 , key_(core::basic_frame::late())\r
  52                 , last_frame_(core::basic_frame::empty())\r
  53         {\r
  54                 key_monitor_subject_.link_target(&monitor_subject_);\r
  55 \r
  56                 key_producer_->monitor_output().link_target(&key_monitor_subject_);\r
  57                 fill_producer_->monitor_output().link_target(&monitor_subject_);\r
  58         }\r
  59 \r
  60         // frame_producer\r
  61         \r
  62         virtual safe_ptr<basic_frame> receive(int hints) override\r
  63         {\r
  64                 tbb::parallel_invoke(\r
  65                 [&]\r
  66                 {\r
  67                         if(fill_ == core::basic_frame::late())\r
  68                                 fill_ = receive_and_follow(fill_producer_, hints);\r
  69                 },\r
  70                 [&]\r
  71                 {\r
  72                         if(key_ == core::basic_frame::late())\r
  73                                 key_ = receive_and_follow(key_producer_, hints | ALPHA_HINT);\r
  74                 });\r
  75 \r
  76                 if(fill_ == basic_frame::eof() || key_ == basic_frame::eof())\r
  77                         return basic_frame::eof();\r
  78 \r
  79                 if(fill_ == core::basic_frame::late() || key_ == core::basic_frame::late()) // One of the producers is lagging, keep them in sync.\r
  80                         return core::basic_frame::late();\r
  81                 \r
  82                 auto frame = basic_frame::fill_and_key(fill_, key_);\r
  83 \r
  84                 fill_ = basic_frame::late();\r
  85                 key_  = basic_frame::late();\r
  86 \r
  87                 return last_frame_ = frame;\r
  88         }\r
  89 \r
  90         virtual safe_ptr<core::basic_frame> last_frame() const override\r
  91         {\r
  92                 return disable_audio(last_frame_);\r
  93         }\r
  94 \r
  95         virtual safe_ptr<basic_frame> create_thumbnail_frame() override\r
  96         {\r
  97                 auto fill_frame = fill_producer_->create_thumbnail_frame();\r
  98                 auto key_frame = key_producer_->create_thumbnail_frame();\r
  99 \r
 100                 if (fill_frame == basic_frame::empty() || key_frame == basic_frame::empty())\r
 101                         return basic_frame::empty();\r
 102 \r
 103                 if (fill_frame == basic_frame::eof() || key_frame == basic_frame::eof())\r
 104                         return basic_frame::eof();\r
 105 \r
 106                 if (fill_frame == basic_frame::late() || key_frame == basic_frame::late())\r
 107                         return basic_frame::late();\r
 108 \r
 109                 return basic_frame::fill_and_key(fill_frame, key_frame);\r
 110         }\r
 111 \r
 112         virtual uint32_t nb_frames() const override\r
 113         {\r
 114                 return std::min(fill_producer_->nb_frames(), key_producer_->nb_frames());\r
 115         }\r
 116 \r
 117         virtual std::wstring print() const override\r
 118         {\r
 119                 return L"separated[fill:" + fill_producer_->print() + L"|key[" + key_producer_->print() + L"]]";\r
 120         }       \r
 121 \r
 122         boost::property_tree::wptree info() const override\r
 123         {\r
 124                 boost::property_tree::wptree info;\r
 125                 info.add(L"type", L"separated-producer");\r
 126                 info.add_child(L"fill.producer",        fill_producer_->info());\r
 127                 info.add_child(L"key.producer", key_producer_->info());\r
 128                 return info;\r
 129         }\r
 130 \r
 131         monitor::source& monitor_output()\r
 132         {\r
 133                 return monitor_subject_;\r
 134         }\r
 135 };\r
 136 \r
 137 safe_ptr<frame_producer> create_separated_producer(const safe_ptr<frame_producer>& fill, const safe_ptr<frame_producer>& key)\r
 138 {\r
 139         return create_producer_print_proxy(\r
 140                         make_safe<separated_producer>(fill, key));\r
 141 }\r
 142 \r
 143 safe_ptr<frame_producer> create_separated_thumbnail_producer(const safe_ptr<frame_producer>& fill, const safe_ptr<frame_producer>& key)\r
 144 {\r
 145         return make_safe<separated_producer>(fill, key);\r
 146 }\r
 147 \r
 148 }}\r
 149 \r