git.sesse.net Git - casparcg/blob - core/consumer/frame_consumer.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 "frame_consumer.h"\r
  25 \r
  26 #include "cadence/cadence_guard_consumer.h"\r
  27 \r
  28 namespace caspar { namespace core {\r
  29                 \r
  30 std::vector<const consumer_factory_t> g_factories;\r
  31 \r
  32 void register_consumer_factory(const consumer_factory_t& factory)\r
  33 {\r
  34         g_factories.push_back(factory);\r
  35 }\r
  36 \r
  37 safe_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
  38 {\r
  39         if(params.empty())\r
  40                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("params") << arg_value_info(""));\r
  41         \r
  42         auto consumer = frame_consumer::empty();\r
  43         std::any_of(g_factories.begin(), g_factories.end(), [&](const consumer_factory_t& factory) -> bool\r
  44                 {\r
  45                         try\r
  46                         {\r
  47                                 consumer = factory(params);\r
  48                         }\r
  49                         catch(...)\r
  50                         {\r
  51                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
  52                         }\r
  53                         return consumer != frame_consumer::empty();\r
  54                 });\r
  55 \r
  56         if(consumer == frame_consumer::empty())\r
  57                 BOOST_THROW_EXCEPTION(file_not_found() << msg_info("No match found for supplied commands. Check syntax."));\r
  58 \r
  59         return consumer;\r
  60 }\r
  61 \r
  62 const safe_ptr<frame_consumer>& frame_consumer::empty()\r
  63 {\r
  64         struct empty_frame_consumer : public frame_consumer\r
  65         {\r
  66                 virtual bool send(const safe_ptr<const data_frame>&) override {return false;}\r
  67                 virtual void initialize(const video_format_desc&, int) override{}\r
  68                 virtual std::wstring print() const override {return L"empty";}\r
  69                 virtual bool has_synchronization_clock() const override {return false;}\r
  70                 virtual int buffer_depth() const override {return 0;};\r
  71                 virtual int index() const{return -1;}\r
  72                 virtual boost::property_tree::wptree info() const override\r
  73                 {\r
  74                         boost::property_tree::wptree info;\r
  75                         info.add(L"type", L"empty-consumer");\r
  76                         return info;\r
  77                 }\r
  78         };\r
  79         static safe_ptr<frame_consumer> consumer = make_safe<empty_frame_consumer>();\r
  80         return consumer;\r
  81 }\r
  82 \r
  83 }}