///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2016 Edouard Griffiths, F4EXB                                   //
//                                                                               //
// 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 as version 3 of the License, or                  //
//                                                                               //
// 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 V3 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 SDRBASE_DSP_SAMPLESOURCEFIFO_H_
#define SDRBASE_DSP_SAMPLESOURCEFIFO_H_

#include <QObject>
#include <QMutex>
#include <stdint.h>
#include <assert.h>
#include "util/export.h"
#include "dsp/dsptypes.h"

class SDRANGEL_API SampleSourceFifo : public QObject {
    Q_OBJECT

public:
    SampleSourceFifo(uint32_t size, uint32_t samplesChunkSize);
    ~SampleSourceFifo();

    unsigned int getChunkSize() const { return m_samplesChunkSize; }
    void read(SampleVector::iterator& begin, SampleVector::iterator& end);
    void getReadIterator(SampleVector::iterator& beginRead); //!< begin read at this point for the chunksize length
    void write(const Sample& sample);                        //!< write directly
    void getWriteIterator(SampleVector::iterator& writeAt);  //!< get iterator to current item for update - write phase 1
    void bumpIndex();                                        //!< copy current item to second buffer and bump write index - write phase 2

private:
    uint32_t m_size;
    uint32_t m_samplesChunkSize;
    SampleVector m_data;
    uint32_t m_i;
    QMutex m_mutex;

signals:
    void dataRead(); // signal data has been read past a read chunk of samples
};

#endif /* SDRBASE_DSP_SAMPLESOURCEFIFO_H_ */