itsmattkc
e8fddc2d5b
The renderer backend can now distinguish between jobs. Previously if two jobs of the same frame were started (which is legal if the user made a change while frames were still being rendered), an earlier job in some situations could finish AFTER a later job, and the backend would have no way of distinguishing between them. This meant a frame could be erroneously set to an old value rather than the newest. This commit introduces job identification so that old jobs are automatically discarded.
54 lines
1.2 KiB
C++
54 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 rational &time, 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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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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