/*
    AudioOutput
    Base class of an audio output player

    Copyright (C) 2017  Earle F. Philhower, III

    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 _AUDIOOUTPUTNULL_H
#define _AUDIOOUTPUTNULL_H

#include "AudioOutput.h"

class AudioOutputNull : public AudioOutput {
public:
    AudioOutputNull() {};
    ~AudioOutputNull() {};
    virtual bool begin() {
        samples = 0;
        startms = millis();
        return true;
    }
    virtual bool ConsumeSample(int16_t sample[2]) {
        (void)sample;
        samples++;
        return true;
    }
    virtual uint16_t ConsumeSamples(int16_t *sample, uint16_t count) {
        (void) sample;
        uint16_t c = std::min((uint16_t)256, count);
        samples += c;
        return c;
    }
    virtual bool stop() {
        endms = millis();
        return true;
    };
    unsigned long GetMilliseconds() {
        return endms - startms;
    }
    int GetSamples() {
        return samples;
    }
    int GetFrequency() {
        return hertz;
    }

protected:
    unsigned long startms;
    unsigned long endms;
    int samples;
};

#endif
