74 lines
2.2 KiB
C++
74 lines
2.2 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2019 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifndef NODEOUTPUT_H
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#define NODEOUTPUT_H
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#include "param.h"
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/**
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* @brief A node parameter designed to serve data to the input of another node
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*/
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class NodeOutput : public NodeParam
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{
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public:
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/**
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* @brief NodeOutput Constructor
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*/
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NodeOutput(const QString& id);
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/**
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* @brief Returns kOutput
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*/
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virtual Type type() override;
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/**
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* @brief The data type this parameter outputs
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*
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* This can be used in conjunction with NodeInput::can_accept_type() to determine whether this parameter can be
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* connected to it.
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*/
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virtual DataType data_type() override;
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void set_data_type(const DataType& type);
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/**
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* @brief Get the value of this output at a given tie
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*
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* This function is intended to primarily be called by any connected NodeInputs.
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*
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* The first thing this function does is request the parent Node object to Process() at this time. The Node should
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* then perform whatever actions necessary (usually taking data from inputs and creating output data) to set the
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* correct value that this output should have at this time (the Node should use set_value() for this). This function
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* will then return the value that was set after Process() returned.
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*
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* In many cases for efficiency, the Node can also ignore this request if it knows the output data will not change
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* (i.e. if the time has not changed from the last Process()).
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*/
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virtual QVariant get_value(const rational &time);
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void push_value(const QVariant& v, const rational& time);
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private:
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DataType data_type_;
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};
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#endif // NODEOUTPUT_H
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