/*
 * Copyright 2008 Stephan Aßmus <superstippi@gmx.de>
 * All rights reserved. Distributed under the terms of the MIT licensce.
 */
#ifndef AUDIO_VOLUME_CONVERTER_H
#define AUDIO_VOLUME_CONVERTER_H


/*! This AudioReader just filters the volume. It depends on floating point
 *      audio format.
*/


#include "AudioReader.h"


class AudioVolumeConverter : public AudioReader {
public:
                                                                AudioVolumeConverter(AudioReader* source,
                                                                        float volume = 1.0);
        virtual                                         ~AudioVolumeConverter();

        virtual bigtime_t                       InitialLatency() const;
        virtual status_t                        Read(void* buffer, int64 pos, int64 frames);

        virtual status_t                        InitCheck() const;

                        AudioReader*            Source() const;

                        void                            SetVolume(float volume);
                        float                           Volume() const;

protected:
                        AudioReader*            fSource;
                        float                           fVolume;
                        float                           fPreviousVolume;
};

#endif  // AUDIO_VOLUME_CONVERTER_H