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