190 lines
4.1 KiB
C++
190 lines
4.1 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 RENDERBACKEND_H
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#define RENDERBACKEND_H
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#include <QLinkedList>
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#include "dialog/rendercancel/rendercancel.h"
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#include "decodercache.h"
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#include "node/graph.h"
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#include "node/output/viewer/viewer.h"
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#include "renderworker.h"
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OLIVE_NAMESPACE_ENTER
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class RenderBackend : public QObject
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{
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Q_OBJECT
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public:
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RenderBackend(QObject* parent = nullptr);
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bool Init();
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void Close();
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const QString& GetError() const;
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void SetViewerNode(ViewerOutput* viewer_node);
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bool IsInitiated();
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ViewerOutput* viewer_node() const;
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void CancelQueue();
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public slots:
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void InvalidateCache(const TimeRange &range);
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bool Compile();
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void Decompile();
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signals:
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void QueueComplete();
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protected:
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void RegenerateCacheID();
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virtual bool InitInternal();
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virtual void CloseInternal();
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virtual bool CompileInternal() = 0;
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virtual void DecompileInternal() = 0;
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virtual bool CanRender();
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virtual TimeRange PopNextFrameFromQueue();
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rational GetSequenceLength();
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const QVector<QThread*>& threads();
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/**
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* @brief Internal function for generating the cache ID
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*/
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virtual bool GenerateCacheIDInternal(QCryptographicHash& hash) = 0;
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virtual void InvalidateCacheInternal(const rational &start_range, const rational &end_range);
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virtual void CacheIDChangedEvent(const QString& id);
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void SetError(const QString& error);
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virtual void ConnectViewer(ViewerOutput* node);
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virtual void DisconnectViewer(ViewerOutput* node);
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/**
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* @brief Function called when there are frames in the queue to cache
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*
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* This function is NOT thread-safe and should only be called in the main thread.
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*/
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void CacheNext();
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void InitWorkers();
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virtual NodeInput* GetDependentInput() = 0;
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virtual void ConnectWorkerToThis(RenderWorker* worker) = 0;
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bool ViewerIsConnected() const;
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const QString& cache_id() const;
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void QueueValueUpdate();
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bool AllProcessorsAreAvailable() const;
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bool WorkerIsBusy(RenderWorker* worker) const;
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void SetWorkerBusyState(RenderWorker* worker, bool busy);
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TimeRangeList cache_queue_;
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QVector<RenderWorker*> processors_;
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bool compiled_;
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QHash<TimeRange, qint64> render_job_info_;
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QList<Node*> source_node_list_;
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NodeGraph copied_graph_;
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protected slots:
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void QueueRecompile();
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private:
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/**
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* @brief Internal list of RenderProcessThreads
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*/
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QVector<QThread*> threads_;
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/**
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* @brief Internal variable that contains whether the Renderer has started or not
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*/
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bool started_;
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/**
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* @brief Internal reference to attached viewer node
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*/
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ViewerOutput* viewer_node_;
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/**
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* @brief Internal reference to the copied viewer node we made in the compilation process
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*/
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ViewerOutput* copied_viewer_node_;
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/**
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* @brief Error string that can be set in SetError() to handle failures
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*/
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QString error_;
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QString cache_id_;
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bool recompile_queued_;
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bool input_update_queued_;
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QVector<bool> processor_busy_state_;
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RenderCancelDialog* cancel_dialog_;
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struct FootageWaitInfo {
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StreamPtr stream;
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TimeRange affected_range;
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rational stream_time;
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bool operator==(const FootageWaitInfo& rhs) const;
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};
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QList<FootageWaitInfo> footage_wait_info_;
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private slots:
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void FootageUnavailable(StreamPtr stream, Decoder::RetrieveState state, const TimeRange& path, const rational& stream_time);
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void IndexUpdated(Stream *stream);
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};
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OLIVE_NAMESPACE_EXIT
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#endif // RENDERBACKEND_H
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