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cybsoundmanagerc.h

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/*
Copyright (C) 2002  Malte Weiß, Carsten Winkelholz

Malte Weiß, 06.08.2002: Sound manager class developed.

Address:  FGAN Forschungsgesellschaft f�r Angewandte Naturwissenschaften e. V.
      Neuenahrer Str. 20
      D - 53343 Wachtberg
      
Email:    winkelholz@fgan.de

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 2
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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#ifndef CYBSOUNDMANAGERC_H
#define CYBSOUNDMANAGERC_H

// Structure for a buffer
#include "oaw/misc/urlc.h"
#include "oaw/misc/stringc.h"
#include "oaw/ctk/cybsensorc.h"
#include "../oawconfig.h"
#include "oaw/ctk/cybwrlfields.h"

OAW_BEGIN_NAMESPACE

class CybAudioClipC;
class CybSoundC;

typedef struct _Buffer
{
  // File information
  UrlC          urlFile;    // URL
  StringC        strName;    // Name

  // Buffer properties
  unsigned int  nId;        // Buffer id
  int           nRef;       // Reference count
  double        fLength;    // Buffer length

  _Buffer       *pNext;     // Next buffer
} Buffer;

typedef Buffer* BUFFER;

// Structure for a source

typedef struct _Source
{
  int           nName;      // Name of the source
  unsigned int  nId;        // Source id
  BUFFER        pBuffer;    // Used buffer

  // Source properties
  short         bEnabled;   // Enabled?
  short         bLoop;      // Looped?
  double        fPitch;     // Pitch
  double        fGain;      // Gain
  VectorC       vPosition;  // Position
  VectorC       vDirection; // Direction

  _Source       *pNext;     // Next source
  CybAudioClipC* pAudioClip;

} Source;

typedef Source* SOURCE;
  
// Class definition

class OAW_DLLMAPPING CybSoundManagerC : public CybSensorC
{
public:
  CybSoundManagerC(CybWorldC*);
  virtual ~CybSoundManagerC();
  virtual void RouteData();

  // Event outs
  void SendEventOut_isActive(CybAudioClipC*,SFBool b);
  void SendEventOut_durationChanged(CybAudioClipC*,SFTime t);

protected:
  // Buffer functions
  BUFFER  LoadBuffer        (char *pUrl);
  BUFFER  FindBufferByName  (const StringC &strName);
  void    UnloadBuffer      (BUFFER &pBuffer);
  short   DeleteBuffer      (Buffer *pBuffer);

protected:
  // Load buffer from url (should be derived)
  virtual short LoadBufferFromUrl(char *pUrl, BUFFER &pBuffer) { return 1; }
  CybAudioClipC* GetAudioClipToSourceName(long nName);

public:
  // Source functions
  virtual SOURCE      AddSource            (char *pUrl, CybAudioClipC*);
  virtual short       DeleteSource         (SOURCE pSource);
  virtual void        EnableSource         (SOURCE pSource, short bEnable=1)  { }

  virtual void        SetListener          (Vector3C &vPos, Vector3C &vDir)   { }
  virtual void        UpdateSource         (SOURCE pSource)                   { }

  // Event outs
  void SendEventOut_isActive(SFBool b);
  void SendEventOut_durationChanged(SFTime t);

  //Interface functions for data exchange
  virtual void SetInterfaceData(AnyC&); 
  virtual void CopyInterfaceData (AnyC&,long maxLen); 
  virtual long GetInterfaceDataMinLength();
  virtual long GetInterfaceDataMaxLength();

  // Sound priotity
  void AddSound(CybSoundC *pSound);
  void RemoveSound(CybSoundC *pSound);
  void UpdateSoundList();

protected:
  struct EventS{
    short m_eventType;
    long m_sourceName;
    SFBool m_active;
    double m_duration;
  };
  Buffer      *m_pBufferRoot;   // Root of buffer list
  Source      *m_pSourceRoot;   // Root of source list
  ArrayC<EventS> m_eventBuf;
  ArrayC<CybSoundC*> m_pSounds;             // List of sounds
  long m_nMaxSounds;
};

OAW_END_NAMESPACE


#endif

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