git.sesse.net Git - casparcg/blob - core/producer/frame_producer.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 \r
  21 #include "../StdAfx.h"\r
  22 \r
  23 #include "frame_producer.h"\r
  24 #include "color/color_producer.h"\r
  25 \r
  26 #include <common/memory/safe_ptr.h>\r
  27 \r
  28 namespace caspar { namespace core {\r
  29         \r
  30 std::vector<const producer_factory_t> g_factories;\r
  31 \r
  32 safe_ptr<basic_frame> receive_and_follow(safe_ptr<frame_producer>& producer)\r
  33 {       \r
  34         if(producer == frame_producer::empty())\r
  35                 return basic_frame::eof();\r
  36 \r
  37         auto frame = basic_frame::eof();\r
  38         try\r
  39         {\r
  40                 frame = producer->receive();\r
  41         }\r
  42         catch(...)\r
  43         {\r
  44                 try\r
  45                 {\r
  46                         // Producer will be removed since frame == basic_frame::eof.\r
  47                         CASPAR_LOG_CURRENT_EXCEPTION();\r
  48                         CASPAR_LOG(warning) << producer->print() << " Failed to receive frame. Removing producer.";\r
  49                 }\r
  50                 catch(...){}\r
  51         }\r
  52 \r
  53         if(frame == basic_frame::eof())\r
  54         {\r
  55                 auto following = producer->get_following_producer();\r
  56                 following->set_leading_producer(producer);\r
  57                 producer = std::move(following);                \r
  58 \r
  59                 return receive_and_follow(producer);\r
  60         }\r
  61         return frame;\r
  62 }\r
  63 \r
  64 void register_producer_factory(const producer_factory_t& factory)\r
  65 {\r
  66         g_factories.push_back(factory);\r
  67 }\r
  68 \r
  69 safe_ptr<core::frame_producer> create_producer(const safe_ptr<frame_factory>& my_frame_factory, const std::vector<std::wstring>& params)\r
  70 {\r
  71         if(params.empty())\r
  72                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("params") << arg_value_info(""));\r
  73         \r
  74         auto producer = frame_producer::empty();\r
  75         std::any_of(g_factories.begin(), g_factories.end(), [&](const producer_factory_t& factory) -> bool\r
  76                 {\r
  77                         try\r
  78                         {\r
  79                                 producer = factory(my_frame_factory, params);\r
  80                         }\r
  81                         catch(...)\r
  82                         {\r
  83                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
  84                         }\r
  85                         return producer != frame_producer::empty();\r
  86                 });\r
  87 \r
  88         if(producer == frame_producer::empty())\r
  89                 producer = create_color_producer(my_frame_factory, params);\r
  90 \r
  91         if(producer == frame_producer::empty())\r
  92                 BOOST_THROW_EXCEPTION(file_not_found() << msg_info("No match found for supplied commands. Check syntax."));\r
  93 \r
  94         return producer;\r
  95 }\r
  96 \r
  97 }}