77 lines
2.2 KiB
C++
77 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 NODE_H
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#define NODE_H
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#include <QObject>
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#include "common/rational.h"
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#include "node/input.h"
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#include "node/output.h"
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class Node : public QObject
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{
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Q_OBJECT
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public:
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Node(QObject* parent = nullptr);
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virtual QString Name() = 0;
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virtual QString Category();
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virtual QString Description();
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/**
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* @brief Signal all dependent Nodes that anything cached between start_range and end_range is now invalid and
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* requires re-rendering
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*
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* Override this if your Node subclass keeps a cache, but call this base function at the end of the subclass function.
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* Default behavior is to relay this signal to all connected outputs, which will need to be done as to not break
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* the DAG. Even if the time needs to be transformed somehow (e.g. converting media time to sequence time), you can
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* call this function with transformed time and relay the signal that way.
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*/
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virtual void InvalidateCache(const rational& start_range, const rational& end_range);
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/**
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* @brief Return the parameter at a given index
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*/
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NodeParam* ParamAt(int index);
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/**
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* @brief Return a list of NodeParams
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*/
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QList<NodeParam*> parameters();
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/**
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* @brief Return the current number of parameters
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*/
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int ParameterCount();
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/**
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* @brief Return the index of a parameter
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* @return Parameter index or -1 if this parameter is not part of this Node
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*/
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int IndexOfParameter(NodeParam* param);
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public slots:
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virtual void Process(const rational& time) = 0;
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};
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#endif // NODE_H
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