/*--------------  FrvBuf.h by B.Mours Dec  2, 2002--------------------------*/

#ifndef FRVBUF
#define FRVBUF

#ifndef _POSIX_SOURCE
#define _POSIX_SOURCE
#endif

#include "FrameL.h"
#include "FrvCopy.h"

#ifdef __cplusplus
extern "C" {
#endif

struct FrvBuf {              /*  This is the FrVect Buffering object         */
                             /*--------------------- input data -------------*/
  int nDataOut;              /* output vector size (number of bin)           */
  int step;                  /* step size (number of output bins)            */
  int outType;               /* type for the output vector(-1 means as input)*/
  int decimate;              /* decimation                                   */
  int delay;                 /* internal buffer                              */
                             /*------------------- internal data ------------*/
  char* work;                /* working area                                 */
  long first;                /* index of the first point in the work space   */
  long last;                 /* index of the last point in the work space    */
  long workSize;             /* # of elements (not bytes) for the work space*/
  long readyToUse;           /* index of the point to be reached to output data*/
  double lastGTime;
  FrVect *input;             /* input working vector (point to work)         */
                             /* ------------output-------------------------  */
  FrVect *output;            /* output data  (point to work)                 */
};

typedef struct FrvBuf FrvBuf;

void    FrvBufFree   (FrvBuf* buffer);
int     FrvBufFeed   (FrvBuf *buffer, FrVect *vect);
int     FrvBufGetNext(FrvBuf *buffer);
int     FrvBufInit   (FrvBuf *buffer, FrVect *vect); 
FrvBuf* FrvBufNew(int outSize,int step,int outType,int decimate,int delay);
int     FrvBufStillToGo(FrvBuf *buffer);

#ifdef __cplusplus
}
#endif

#endif

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