MultiStream.h

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/****
 * Sming Framework Project - Open Source framework for high efficiency native ESP8266 development.
 * Created 2015 by Skurydin Alexey
 * http://github.com/SmingHub/Sming
 * All files of the Sming Core are provided under the LGPL v3 license.
 *
 * MultiStream.h
 *
 *  Created on: Nov 7, 2018
 *      Author: slavey
 *
 ****/

#pragma once

#include "DataSourceStream.h"

class MultiStream : public IDataSourceStream
{
public:
    ~MultiStream()
    {
        delete stream;
    }

    StreamType getStreamType() const override
    {
        return eSST_Unknown;
    }

    int available() override
    {
        return -1;
    }

    uint16_t readMemoryBlock(char* data, int bufSize) override;

    bool seek(int len) override;

    bool isFinished() override
    {
        return finished;
    }

protected:
    virtual IDataSourceStream* getNextStream() = 0;

private:
    IDataSourceStream* stream = nullptr;
    bool finished = false;
};