recycler_p.h

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/***************************************************************************
 *   Copyright (C) 2010-2024 by Ilya Kotov                                 *
 *   forkotov02@ya.ru                                                      *
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 *   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, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
 ***************************************************************************/

#ifndef RECYCLER_P_H
#define RECYCLER_P_H

#include <QMutex>
#include <QWaitCondition>
#include "buffer.h"

class QMMP_EXPORT Recycler
{
public:
    Recycler() = default;
    ~Recycler();

    void configure(quint32 freq, int chan);
    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
    size_t samples() const; // size in samples
    size_t blockSamples() const; // size in samples

    QMutex *mutex()
    {
        return &m_mtx;
    }
    QWaitCondition *cond()
    {
        return &m_cnd;
    }
    bool blocked();

private:
    unsigned int m_buffer_count = 0, m_add_index = 0, m_done_index = 0, m_current_count = 0;
    size_t m_block_samples = 0;
    Buffer **m_buffers = nullptr;
    QMutex m_mtx;
    QWaitCondition m_cnd;
    Buffer *m_blocked = nullptr;

};

#endif