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/*
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
2 of the License, or (at your option) any later version.
*/
#ifndef FRAMECACHE_H
#define FRAMECACHE_H
#include <QThread>
#include <QPair>
#include <QHash>
#include <QPair>
#include <QQueue>
#include <QString>
class QSemaphore;
class QMutex;
class FrameCacheGenerator;
class FrameCache : public QObject {
Q_OBJECT
public:
explicit FrameCache(QObject *parent = 0);
~FrameCache();
const QPixmap entry(const QString &sourcePath, const QString &when = QString());
const QString entryPath(const QString &sourcePath, const QString &when);
private:
QHash<QPair<QString, QString>, QString> *mFrameCache;
QQueue<QPair<QString, QString> > *mDataQueue;
QString mCacheFile;
qint32 mMagic;
QSemaphore *mSemFree;
QSemaphore *mSemUsed;
QMutex *mCacheMx;
FrameCacheGenerator *mGenerator;
QString mWhen;
};
class FrameCacheGenerator : public QThread {
Q_OBJECT
public:
explicit FrameCacheGenerator(QObject *parent = 0);
void init(QSemaphore *set, QSemaphore *get, QMutex *cachemx, QQueue<QPair<QString, QString> > *data, QHash<QPair<QString, QString>, QString> *cache);
const QString cacheFile() const { return mCacheFile; }
qint32 magic() const { return mMagic; };
void readConfig();
void readCache();
public slots:
void run();
private:
bool grabFrame(const QString &sourceFile, QString when);
QSemaphore *mSemFree;
QSemaphore *mSemUsed;
QMutex *mCacheMx;
QQueue<QPair<QString, QString> > *mDataQueue;
QHash<QPair<QString, QString>, QString> *mFrameCache;
QString mCacheDir;
QString mCacheFile;
//QString mWhen;
QString mFfMpegPath;
const qint32 mMagic;
const QString mCacheSubDir;
const QString mCacheFileName;
};
#endif // FRAMECACHE_H
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