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