audiobase.h

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/*****************************************************************************
 * Copyright 2015 Haye Hinrichsen, Christoph Wick
 *
 * This file is part of Entropy Piano Tuner.
 *
 * Entropy Piano Tuner 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.
 *
 * Entropy Piano Tuner 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
 * Entropy Piano Tuner. If not, see http://www.gnu.org/licenses/.
 *****************************************************************************/

//=============================================================================
//                              Audio base class
//=============================================================================

#ifndef AUDIOBASE_H
#define AUDIOBASE_H

#include <vector>
#include <cstdint>
#include <string>

#include "../system/prerequisites.h"


class AudioBase
{
public:
    typedef double PCMDataType;

    typedef std::vector<PCMDataType> PacketType;

public:
    AudioBase();                        
    virtual ~AudioBase() {}             

    virtual void init() = 0;            
    virtual void exit() = 0;            

    virtual void start() = 0;           
    virtual void stop()  = 0;           

    const std::string &getDeviceName() const;   // get the device name
    void setDeviceName(const std::string &n);   // set the device name
    int getSamplingRate() const;                // get actual sampling rate
    virtual void setSamplingRate(int rate);     // set actual sampling rate
    int getChannelCount() const;                // get number of channels
    virtual void setChannelCount(int cnt);      // set number of channels

private:
    std::string mAudioDeviceName;       
    int mSamplingRate;                  
    int mChannelCount;                  
};

#endif // AUDIOBASE_H