prepro.c

sloedgy open sip stack source code

/*

$Log: prepro.c,v $
Revision 1.1  2006/06/26 03:02:54  joegenbaclor
I have decided to include the latest development realease  of OPAL tagged Deimos Devel 1 (June 8 2006) as inegrated classes to opensipstack to avoid future version conflicts due to the fast pace in OPAL development.   This move is also aimed to reduce the size of projects using OPAL componets such as the soon to be relased OpenSIPPhone.

Revision 2.2  2005/08/08 03:28:42  dereksmithies
Eradicate all "/ * within comments" messages from GCC compilations.

Revision 2.1  2003/03/14 09:53:27  robertj
Updated to openH323 v1.11.7

Revision 1.1  2000/06/05 04:45:12  robertj
Added LPC-10 2400bps codec

 * Revision 1.2  1996/08/20  20:40:51  jaf
 * Removed all static local variables that were SAVE'd in the Fortran
 * code, and put them in struct lpc10_encoder_state that is passed as an
 * argument.
 *
 * Removed init function, since all initialization is now done in
 * init_lpc10_encoder_state().
 *
 * Revision 1.1  1996/08/19  22:30:54  jaf
 * Initial revision
 *

*/

#ifdef P_R_O_T_O_T_Y_P_E_S
extern int prepro_(real *speech, integer *length,
		   struct lpc10_encoder_state *st)
/*:ref: hp100_ 14 3 6 4 4 */
/*:ref: inithp100_ 14 0 */
#endif

/*  -- translated by f2c (version 19951025).
   You must link the resulting object file with the libraries:
	-lf2c -lm   (in that order)
*/

#include "f2c.h"

/* Table of constant values */

static integer c__1 = 1;

/* ********************************************************************* */

/* 	PREPRO Version 48

 * $Log: prepro.c,v $
 * Revision 1.1  2006/06/26 03:02:54  joegenbaclor
 * I have decided to include the latest development realease  of OPAL tagged Deimos Devel 1 (June 8 2006) as inegrated classes to opensipstack to avoid future version conflicts due to the fast pace in OPAL development.   This move is also aimed to reduce the size of projects using OPAL componets such as the soon to be relased OpenSIPPhone.
 *
 * Revision 2.2  2005/08/08 03:28:42  dereksmithies
 * Eradicate all "/ * within comments" messages from GCC compilations.
 *
 * Revision 2.1  2003/03/14 09:53:27  robertj
 * Updated to openH323 v1.11.7
 *
 * Revision 1.1  2000/06/05 04:45:12  robertj
 * Added LPC-10 2400bps codec
 *
 * Revision 1.2  1996/08/20  20:40:51  jaf
 * Removed all static local variables that were SAVE'd in the Fortran
 * code, and put them in struct lpc10_encoder_state that is passed as an
 * argument.
 *
 * Removed init function, since all initialization is now done in
 * init_lpc10_encoder_state().
 *
 * Revision 1.1  1996/08/19  22:30:54  jaf
 * Initial revision
 * */
/* Revision 1.3  1996/03/14  23:22:56  jaf */
/* Added comments about when INITPREPRO should be used. */

/* Revision 1.2  1996/03/14  23:09:27  jaf */
/* Added an entry named INITPREPRO that initializes the local state of */
/* this subroutine, and those it calls (if any). */

/* Revision 1.1  1996/02/07  14:48:54  jaf */
/* Initial revision */


/* ********************************************************************* */

/*    Pre-process input speech: */

/* Inputs: */
/*  LENGTH - Number of SPEECH samples */
/* Input/Output: */
/*  SPEECH(LENGTH) - Speech data. */
/*                   Indices 1 through LENGTH are read and modified. */

/* This subroutine has no local state maintained from one call to the */
/* next, but HP100 does.  If you want to switch to using a new audio */
/* stream for this filter, or reinitialize its state for any other */
/* reason, call the ENTRY INITPREPRO. */

/* Subroutine */ int prepro_(real *speech, integer *length,
			     struct lpc10_encoder_state *st)
{
    extern /* Subroutine */ int hp100_(real *, integer *, integer *, struct lpc10_encoder_state *);

/*       Arguments */
/*   High Pass Filter at 100 Hz */
    /* Parameter adjustments */
    if (speech) {
	--speech;
	}

    /* Function Body */
    hp100_(&speech[1], &c__1, length, st);
    return 0;
} /* prepro_ */