/*
 * Copyright 2003-2013, Haiku, Inc.
 * Distributed under the terms of the MIT license.
 *
 * Authors:
 *              Jérôme Duval
 *              François Revol
 *              Puck Meerburg, puck@puckipedia.nl
 */
#ifndef MIXER_CONTROL_H
#define MIXER_CONTROL_H


#include <MediaRoster.h>

class BContinuousParameter;
class BParameter;
class BParameterWeb;

// The volume which choices
#define VOLUME_USE_MIXER                0 // default
#define VOLUME_USE_PHYS_OUTPUT  1


class MixerControl {
public:
                                                        MixerControl(int32 volumeWhich = VOLUME_USE_MIXER);
                                                        ~MixerControl();

                        bool                    Connect(int32 volumeWhich, float* _value = NULL,
                                                                const char** _error = NULL);
                        bool                    Connected();

                        int32                   VolumeWhich() const;
                        float                   Volume() const;

                        void                    SetVolume(float volume);
                        void                    ChangeVolumeBy(float value);

                        void                    SetMute(bool muted);
                        bool                    Mute();

                        float                   Minimum() const { return fMin; }
                        float                   Maximum() const { return fMax; }

                        media_node              GainNode() { return fGainMediaNode; }
                        media_node              MuteNode() { return fMuteMediaNode; }

private:
                        void                    _Disconnect();

                        int32                   fVolumeWhich;
                        media_node              fGainMediaNode;
                        media_node              fMuteMediaNode;
                        BParameterWeb*  fParameterWeb;
                        BContinuousParameter* fMixerParameter;
                        BParameter*             fMuteParameter;
                        float                   fMin;
                        float                   fMax;
                        float                   fStep;
                        BMediaRoster*   fRoster;
};

#endif  // MIXER_CONTROL_H