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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 PLAYBACKCACHE_H
#define PLAYBACKCACHE_H
#include <QMutex>
#include <QObject>
#include "common/timerange.h"
OLIVE_NAMESPACE_ENTER
class PlaybackCache : public QObject
{
Q_OBJECT
public:
PlaybackCache(QObject* parent = nullptr) :
QObject(parent)
{
}
void Invalidate(const TimeRange& r);
void InvalidateAll();
const rational& GetLength()
{
QMutexLocker locker(lock());
return NoLockGetLength();
}
void SetLength(const rational& r);
bool IsFullyValidated()
{
QMutexLocker locker(lock());
return invalidated_.isEmpty();
}
void Shift(const rational& from, const rational& to);
const TimeRangeList& GetInvalidatedRanges()
{
QMutexLocker locker(lock());
return NoLockGetInvalidatedRanges();
}
bool HasInvalidatedRanges()
{
QMutexLocker locker(lock());
return !invalidated_.isEmpty();
}
signals:
void Invalidated(const OLIVE_NAMESPACE::TimeRange& r);
void Validated(const OLIVE_NAMESPACE::TimeRange& r);
void Shifted(const OLIVE_NAMESPACE::rational& from, const OLIVE_NAMESPACE::rational& to);
void LengthChanged(const OLIVE_NAMESPACE::rational& r);
protected:
void NoLockInvalidate(const TimeRange& r);
void NoLockValidate(const TimeRange& r);
const rational& NoLockGetLength() const
{
return length_;
}
const TimeRangeList& NoLockGetInvalidatedRanges()
{
return invalidated_;
}
virtual void LengthChangedEvent(const rational& old, const rational& newlen);
virtual void InvalidateEvent(const TimeRange& range);
virtual void ShiftEvent(const rational& from, const rational& to);
QMutex* lock()
{
return &lock_;
}
struct JobIdentifier {
TimeRange range;
qint64 job_time;
};
QList<JobIdentifier> jobs_;
private:
void RemoveRangeFromJobs(const TimeRange& remove);
QMutex lock_;
TimeRangeList invalidated_;
rational length_;
};
OLIVE_NAMESPACE_EXIT
#endif // PLAYBACKCACHE_H
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