itsmattkc
5227e10f39
If the nodes are now stateless, there's nothing stopping the renderer from rendering multiple frames at once. Earlier since the nodes held some of their input/output data (and that data could change per frame), it was not possible to render multiple frames at once without conflicts. Now that the node state is held in render threads, they can do whatever they want at any time.
56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
#ifndef VIDEORENDERFRAMECACHE_H
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#define VIDEORENDERFRAMECACHE_H
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#include <QMutex>
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#include "common/rational.h"
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class VideoRenderFrameCache
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{
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public:
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VideoRenderFrameCache();
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/**
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* @brief Return whether a frame with this hash already exists
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*/
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bool HasHash(const QByteArray& hash);
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/**
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* @brief Return whether a frame is currently being cached
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*/
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bool IsCaching(const QByteArray& hash);
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/**
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* @brief Check if a frame is currently being cached, and if not reserve it
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*/
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bool TryCache(const QByteArray& hash);
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/**
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* @brief Return the path of the cached image at this time
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*/
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QString CachePathName(const QByteArray &hash) const;
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void SetCacheID(const QString& id);
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QByteArray TimeToHash(const rational& time) const;
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void SetHash(const rational& time, const QByteArray& hash);
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void RemoveHash(const rational& time, const QByteArray &hash);
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void Truncate(const rational& time);
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QList<rational> TimesWithHash(const QByteArray& hash);
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private:
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void RemoveHashFromCurrentlyCaching(const QByteArray& hash);
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QMap<rational, QByteArray> time_hash_map_;
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QMutex currently_caching_lock_;
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QVector<QByteArray> currently_caching_list_;
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QString cache_id_;
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};
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#endif // VIDEORENDERFRAMECACHE_H
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