2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>
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4 * This file is part of CasparCG.
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6 * CasparCG is free software: you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation, either version 3 of the License, or
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9 * (at your option) any later version.
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11 * CasparCG is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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16 * You should have received a copy of the GNU General Public License
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17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
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21 #include "../StdAfx.h"
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23 #include "frame_producer.h"
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24 #include "frame/basic_frame.h"
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26 #include "color/color_producer.h"
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27 #include "separated/separated_producer.h"
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29 #include <common/memory/safe_ptr.h>
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31 namespace caspar { namespace core {
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33 std::vector<const producer_factory_t> g_factories;
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35 const safe_ptr<frame_producer>& frame_producer::empty() // nothrow
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37 struct empty_frame_producer : public frame_producer
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39 virtual safe_ptr<basic_frame> receive(){return basic_frame::empty();}
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40 virtual void set_frame_factory(const safe_ptr<frame_factory>&){}
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41 virtual std::wstring print() const { return L"empty";}
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43 static safe_ptr<frame_producer> producer = make_safe<empty_frame_producer>();
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47 safe_ptr<basic_frame> receive_and_follow(safe_ptr<frame_producer>& producer)
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49 if(producer == frame_producer::empty())
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50 return basic_frame::eof();
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52 auto frame = basic_frame::eof();
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55 frame = producer->receive();
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61 // Producer will be removed since frame == basic_frame::eof.
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62 CASPAR_LOG_CURRENT_EXCEPTION();
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63 CASPAR_LOG(warning) << producer->print() << " Failed to receive frame. Removing producer.";
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68 if(frame == basic_frame::eof())
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70 CASPAR_LOG(info) << producer->print() << " End Of File.";
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71 auto following = producer->get_following_producer();
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72 following->set_leading_producer(producer);
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73 producer = std::move(following);
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75 return receive_and_follow(producer);
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80 void register_producer_factory(const producer_factory_t& factory)
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82 g_factories.push_back(factory);
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85 safe_ptr<core::frame_producer> do_create_producer(const safe_ptr<frame_factory>& my_frame_factory, const std::vector<std::wstring>& params)
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88 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("params") << arg_value_info(""));
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90 auto producer = frame_producer::empty();
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91 std::any_of(g_factories.begin(), g_factories.end(), [&](const producer_factory_t& factory) -> bool
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95 producer = factory(my_frame_factory, params);
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99 CASPAR_LOG_CURRENT_EXCEPTION();
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101 return producer != frame_producer::empty();
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104 if(producer == frame_producer::empty())
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105 producer = create_color_producer(my_frame_factory, params);
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107 if(producer == frame_producer::empty())
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108 BOOST_THROW_EXCEPTION(file_not_found() << msg_info("No match found for supplied commands. Check syntax."));
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114 safe_ptr<core::frame_producer> create_producer(const safe_ptr<frame_factory>& my_frame_factory, const std::vector<std::wstring>& params)
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116 auto producer = do_create_producer(my_frame_factory, params);
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117 auto key_producer = frame_producer::empty();
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119 try // to find a key file.
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121 auto params_copy = params;
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122 if(params_copy.size() > 0)
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124 params_copy[0] += L"_A";
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125 key_producer = do_create_producer(my_frame_factory, params_copy);
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130 if(key_producer != frame_producer::empty())
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131 return create_separated_producer(producer, key_producer);
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