/usr/src/RPM/BUILD/qmmp-0.4-svn/src/qmmp/recycler.h

// Copyright (c) 2000-2001 Brad Hughes <bhughes@trolltech.com>
//
// Use, modification and distribution is allowed without limitation,
// warranty, or liability of any kind.
//

#ifndef __recycler_h
#define __recycler_h

#include <QMutex>
#include <QWaitCondition>

class Buffer;

class Recycler
{
public:
    Recycler(unsigned int sz);
    ~Recycler();
    bool full() const;
    bool empty() const;
    int available() const;
    int used() const;
    Buffer *next();
    Buffer *get(); // get next in recycle
    void add(); // add to queue
    void done(); // add to recycle
    void clear(); // clear queue
    unsigned int size() const; // size in bytes
    QMutex *mutex()
    {
        return &mtx;
    }
    QWaitCondition *cond()
    {
        return &cnd;
    }
    bool blocked();

private:
    unsigned int buffer_count, add_index, done_index, current_count;
    Buffer **buffers;
    QMutex mtx;
    QWaitCondition cnd;
    Buffer *m_blocked;
};

#endif // __recycler_h

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