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/***
Olive - Non-Linear Video Editor
Copyright (C) 2019 Olive Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
***/
#ifndef NODETRAVERSER_H
#define NODETRAVERSER_H
#include "codec/decoder.h"
#include "common/cancelableobject.h"
#include "node/output/track/track.h"
#include "project/item/footage/stream.h"
#include "value.h"
OLIVE_NAMESPACE_ENTER
class NodeTraverser : public CancelableObject
{
public:
NodeTraverser() = default;
NodeValueTable GenerateTable(const Node *n, const TimeRange &range);
NodeValueTable GenerateTable(const Node *n, const rational &in, const rational& out);
NodeValueDatabase GenerateDatabase(const Node *node, const TimeRange &range);
protected:
NodeValueTable ProcessInput(NodeInput *input, const TimeRange &range);
virtual NodeValueTable GenerateBlockTable(const TrackOutput *track, const TimeRange& range);
virtual QVariant ProcessVideoFootage(StreamPtr stream, const rational &input_time);
virtual QVariant ProcessAudioFootage(StreamPtr stream, const TimeRange &input_time);
virtual QVariant ProcessShader(const Node *node, const TimeRange &range, const ShaderJob& job);
virtual QVariant ProcessSamples(const Node *node, const TimeRange &range, const SampleJob &job);
virtual QVariant ProcessFrameGeneration(const Node *node, const GenerateJob& job);
virtual QVariant GetCachedFrame(const Node *node, const rational &time);
static void AddGlobalsToDatabase(NodeValueDatabase& db, const TimeRange &range);
private:
void PostProcessTable(const Node *node, const TimeRange &range, NodeValueTable &output_params);
};
OLIVE_NAMESPACE_EXIT
#endif // NODETRAVERSER_H
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