2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
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4 * This file is part of CasparCG (www.casparcg.com).
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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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19 * Author: Robert Nagy, ronag89@gmail.com
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22 #include "../../stdafx.h"
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24 #include "separated_producer.h"
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26 #include <core/producer/frame/basic_frame.h>
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28 #include <tbb/parallel_invoke.h>
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30 namespace caspar { namespace core {
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32 struct separated_producer : public frame_producer
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34 safe_ptr<frame_producer> fill_producer_;
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35 safe_ptr<frame_producer> key_producer_;
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36 safe_ptr<basic_frame> fill_;
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37 safe_ptr<basic_frame> key_;
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38 safe_ptr<basic_frame> last_frame_;
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40 explicit separated_producer(const safe_ptr<frame_producer>& fill, const safe_ptr<frame_producer>& key)
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41 : fill_producer_(fill)
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42 , key_producer_(key)
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43 , fill_(core::basic_frame::late())
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44 , key_(core::basic_frame::late())
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45 , last_frame_(core::basic_frame::empty())
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51 virtual safe_ptr<basic_frame> receive(int hints) override
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53 tbb::parallel_invoke(
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56 if(fill_ == core::basic_frame::late())
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57 fill_ = receive_and_follow(fill_producer_, hints);
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61 if(key_ == core::basic_frame::late())
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62 key_ = receive_and_follow(key_producer_, hints | ALPHA_HINT);
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65 if(fill_ == basic_frame::eof() || key_ == basic_frame::eof())
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66 return basic_frame::eof();
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68 if(fill_ == core::basic_frame::late() || key_ == core::basic_frame::late()) // One of the producers is lagging, keep them in sync.
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69 return core::basic_frame::late();
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71 auto frame = basic_frame::fill_and_key(fill_, key_);
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73 fill_ = basic_frame::late();
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74 key_ = basic_frame::late();
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76 return last_frame_ = frame;
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79 virtual safe_ptr<core::basic_frame> last_frame() const override
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81 return disable_audio(last_frame_);
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84 virtual uint32_t nb_frames() const override
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86 return std::min(fill_producer_->nb_frames(), key_producer_->nb_frames());
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89 virtual std::string print() const override
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91 return "separated[fill:" + fill_producer_->print() + "|key:" + key_producer_->print() + "]";
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94 boost::property_tree::ptree info() const override
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96 boost::property_tree::ptree info;
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97 info.add("type", "separated-producer");
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98 info.add_child("fill.producer", fill_producer_->info());
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99 info.add_child("key.producer", key_producer_->info());
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104 safe_ptr<frame_producer> create_separated_producer(const safe_ptr<frame_producer>& fill, const safe_ptr<frame_producer>& key)
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106 return make_safe<separated_producer>(fill, key);
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