AUD_Mixer.h

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/*
 * $Id: AUD_Mixer.h 35141 2011-02-25 10:21:56Z jesterking $
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * Copyright 2009-2011 Jörg Hermann Müller
 *
 * This file is part of AudaSpace.
 *
 * Audaspace 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.
 *
 * AudaSpace 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 Audaspace; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#ifndef AUD_MIXER
#define AUD_MIXER

#include "AUD_ConverterFunctions.h"
#include "AUD_Buffer.h"
class AUD_IReader;
#include <list>

struct AUD_MixerBuffer
{
        sample_t* buffer;
        int start;
        int length;
        float volume;
};

class AUD_Mixer
{
protected:
        std::list<AUD_MixerBuffer> m_buffers;

        const AUD_DeviceSpecs m_specs;

        AUD_Buffer m_buffer;

        AUD_convert_f m_convert;

public:
        AUD_Mixer(AUD_DeviceSpecs specs);

        virtual ~AUD_Mixer() {}

        AUD_DeviceSpecs getSpecs() const;

        virtual AUD_IReader* prepare(AUD_IReader* reader)=0;

        virtual void add(sample_t* buffer, int start, int length, float volume);

        virtual void superpose(data_t* buffer, int length, float volume);
};

#endif //AUD_MIXER