lpcini.c File Reference

#include "asterisk.h"
#include "f2c.h"

Include dependency graph for lpcini.c:

Go to the source code of this file.

Macros
#define	ASTMM_LIBC   ASTMM_REDIRECT
#define	contrl_1   contrl_

Functions
struct lpc10_decoder_state *	create_lpc10_decoder_state ()
struct lpc10_encoder_state *	create_lpc10_encoder_state ()
void	init_lpc10_decoder_state (struct lpc10_decoder_state *st)
void	init_lpc10_encoder_state (struct lpc10_encoder_state *st)
int	lpcini_ (void)

Variables
struct {
logical   corrp
integer   lframe
integer   order
}	contrl_

Macro Definition Documentation

ASTMM_LIBC

#define ASTMM_LIBC   ASTMM_REDIRECT

Definition at line 37 of file lpcini.c.

contrl_1

#define contrl_1   contrl_

Definition at line 55 of file lpcini.c.

Referenced by lpcini_().

Function Documentation

create_lpc10_decoder_state()

struct lpc10_decoder_state* create_lpc10_decoder_state

(

void

)

Definition at line 369 of file lpcini.c.

References init_lpc10_decoder_state(), and malloc().

Referenced by lpc10_dec_new().

{
    struct lpc10_decoder_state *st;

    st = (struct lpc10_decoder_state *)
   malloc((unsigned) sizeof (struct lpc10_decoder_state));
    if (st != 0) {
   init_lpc10_decoder_state(st);
    }
    return (st);
}

create_lpc10_encoder_state()

struct lpc10_encoder_state* create_lpc10_encoder_state

(

void

)

Definition at line 258 of file lpcini.c.

References init_lpc10_encoder_state(), and malloc().

Referenced by lpc10_enc_new().

{
    struct lpc10_encoder_state *st;

    st = (struct lpc10_encoder_state *)
   malloc((unsigned) sizeof (struct lpc10_encoder_state));
    if (st != 0) {
   init_lpc10_encoder_state(st);
    }
    return (st);
}

init_lpc10_decoder_state()

void init_lpc10_decoder_state

(

struct lpc10_decoder_state *

st

)

Definition at line 383 of file lpcini.c.

References lpc10_decoder_state::buf, lpc10_decoder_state::buflen, lpc10_decoder_state::dei1, lpc10_decoder_state::dei2, lpc10_decoder_state::deo1, lpc10_decoder_state::deo2, lpc10_decoder_state::deo3, lpc10_decoder_state::dpit, lpc10_decoder_state::drc, lpc10_decoder_state::drms, lpc10_decoder_state::erate, lpc10_decoder_state::exc, lpc10_decoder_state::exc2, lpc10_decoder_state::first, lpc10_decoder_state::first_pitsyn, lpc10_decoder_state::hpi1, lpc10_decoder_state::hpi2, lpc10_decoder_state::hpi3, lpc10_decoder_state::iavgp, lpc10_decoder_state::iovoic, lpc10_decoder_state::ipo, lpc10_decoder_state::iptold, lpc10_decoder_state::ivp2h, lpc10_decoder_state::j, lpc10_decoder_state::k, lpcini_(), lpc10_decoder_state::lpi1, lpc10_decoder_state::lpi2, lpc10_decoder_state::lpi3, lpc10_decoder_state::rmso, lpc10_decoder_state::rmso_bsynz, TRUE_, and lpc10_decoder_state::y.

Referenced by create_lpc10_decoder_state().

{
    int i;

    lpcini_();

    /* State used by function decode */
    st->iptold = 60;
    st->first = TRUE_;
    st->ivp2h = 0;
    st->iovoic = 0;
    st->iavgp = 60;
    st->erate = 0;
    for (i = 0; i < 30; i++) {
   st->drc[i] = 0;
    }
    for (i = 0; i < 3; i++) {
   st->dpit[i] = 0;
   st->drms[i] = 0;
    }

    /* State used by function synths */
    for (i = 0; i < 360; i++) {
   st->buf[i] = 0.0f;
    }
    st->buflen = 180;

    /* State used by function pitsyn */
    /* ivoico; */  /* no initial value necessary as long as first_pitsyn is initially TRUE_ */
    /* ipito;  */  /* no initial value necessary as long as first_pitsyn is initially TRUE_ */
    st->rmso = 1.0f;
    /* rco[10]; */  /* no initial value necessary as long as first_pitsyn is initially TRUE_ */
    /* integer jsamp; */   /* no initial value necessary as long as first_pitsyn is initially TRUE_ */
    st->first_pitsyn = TRUE_;

    /* State used by function bsynz */
    st->ipo = 0;
    for (i = 0; i < 166; i++) {
   st->exc[i] = 0.0f;
   st->exc2[i] = 0.0f;
    }
    st->lpi1 = 0.0f;
    st->lpi2 = 0.0f;
    st->lpi3 = 0.0f;
    st->hpi1 = 0.0f;
    st->hpi2 = 0.0f;
    st->hpi3 = 0.0f;
    st->rmso_bsynz = 0.0f;

    /* State used by function random */
    st->j = 2;
    st->k = 5;
    st->y[0] = (shortint) -21161;
    st->y[1] = (shortint) -8478;
    st->y[2] = (shortint) 30892;
    st->y[3] = (shortint) -10216;
    st->y[4] = (shortint) 16950;

    /* State used by function deemp */
    st->dei1 = 0.0f;
    st->dei2 = 0.0f;
    st->deo1 = 0.0f;
    st->deo2 = 0.0f;
    st->deo3 = 0.0f;
}

init_lpc10_encoder_state()

void init_lpc10_encoder_state

(

struct lpc10_encoder_state *

st

)

Definition at line 272 of file lpcini.c.

References lpc10_encoder_state::alphax, lpc10_encoder_state::awin, lpc10_encoder_state::bias, lpc10_encoder_state::d__, lpc10_encoder_state::dither, FALSE_, lpc10_encoder_state::fbue, lpc10_encoder_state::fbve, lpc10_encoder_state::hyst, lpc10_encoder_state::inbuf, lpc10_encoder_state::ipoint, lpc10_encoder_state::isync, lpc10_encoder_state::ivbuf, lpc10_encoder_state::l2buf, lpc10_encoder_state::l2ptr1, lpc10_encoder_state::l2ptr2, lpc10_encoder_state::l2sum1, lpc10_encoder_state::lbue, lpc10_encoder_state::lbve, lpc10_encoder_state::lpbuf, lpcini_(), lpc10_encoder_state::maxmin, lpc10_encoder_state::n, lpc10_encoder_state::obound, lpc10_encoder_state::ofbue, lpc10_encoder_state::olbue, lpc10_encoder_state::osptr, lpc10_encoder_state::p, lpc10_encoder_state::pebuf, lpc10_encoder_state::rcbuf, lpc10_encoder_state::rmsbuf, lpc10_encoder_state::s, lpc10_encoder_state::sfbue, lpc10_encoder_state::slbue, lpc10_encoder_state::snr, lpc10_encoder_state::voibuf, lpc10_encoder_state::voice, lpc10_encoder_state::vwin, lpc10_encoder_state::z11, lpc10_encoder_state::z12, lpc10_encoder_state::z21, lpc10_encoder_state::z22, and lpc10_encoder_state::zpre.

Referenced by create_lpc10_encoder_state().

{
    int i;

    lpcini_();

    /* State used only by function hp100 */
    st->z11 = 0.0f;
    st->z21 = 0.0f;
    st->z12 = 0.0f;
    st->z22 = 0.0f;

    /* State used by function analys */
    for (i = 0; i < 540; i++) {
   st->inbuf[i] = 0.0f;
   st->pebuf[i] = 0.0f;
    }
    for (i = 0; i < 696; i++) {
   st->lpbuf[i] = 0.0f;
    }
    for (i = 0; i < 312; i++) {
   st->ivbuf[i] = 0.0f;
    }
    st->bias = 0.0f;
    /* integer osbuf[10];  */ /* no initial value necessary */
    st->osptr = 1;
    for (i = 0; i < 3; i++) {
   st->obound[i] = 0;
    }
    st->vwin[4] = 307;
    st->vwin[5] = 462;
    st->awin[4] = 307;
    st->awin[5] = 462;
    for (i = 0; i < 8; i++) {
   st->voibuf[i] = 0;
    }
    for (i = 0; i < 3; i++) {
   st->rmsbuf[i] = 0.0f;
    }
    for (i = 0; i < 30; i++) {
   st->rcbuf[i] = 0.0f;
    }
    st->zpre = 0.0f;


    /* State used by function onset */
    st->n = 0.0f;
    st->d__ = 1.0f;
    /* real fpc;   */ /* no initial value necessary */
    for (i = 0; i < 16; i++) {
   st->l2buf[i] = 0.0f;
    }
    st->l2sum1 = 0.0f;
    st->l2ptr1 = 1;
    st->l2ptr2 = 9;
    /* integer lasti; */   /* no initial value necessary */
    st->hyst = FALSE_;

    /* State used by function voicin */
    st->dither = 20.0f;
    st->maxmin = 0.0f;
    for (i = 0; i < 6; i++) {
   st->voice[i] = 0.0f;
    }
    st->lbve = 3000;
    st->fbve = 3000;
    st->fbue = 187;
    st->ofbue = 187;
    st->sfbue = 187;
    st->lbue = 93;
    st->olbue = 93;
    st->slbue = 93;
    st->snr = (real) (st->fbve / st->fbue << 6);

    /* State used by function dyptrk */
    for (i = 0; i < 60; i++) {
   st->s[i] = 0.0f;
    }
    for (i = 0; i < 120; i++) {
   st->p[i] = 0;
    }
    st->ipoint = 0;
    st->alphax = 0.0f;

    /* State used by function chanwr */
    st->isync = 0;

}

lpcini_()

int lpcini_

(

void

)

Definition at line 94 of file lpcini.c.

References contrl_1, and TRUE_.

Referenced by init_lpc10_decoder_state(), and init_lpc10_encoder_state().

{

/* $Log$
 * Revision 1.18  2003/10/21 18:08:11  markster
 * Fix include order
 *
 * Revision 1.5  2003/10/21 18:08:11  markster
 * Fix include order
 *
 * Revision 1.4  2003/10/21 02:57:29  markster
 * FreeBSD patch, take 2
 *
 * Revision 1.3  2003/10/16 21:11:30  martinp
 * Revert the previous patch since it's braking compilation
 *
 * Revision 1.1  2003/02/12 13:59:15  matteo
 * Initial revision
 *
 * Revision 1.2  2000/01/05 08:20:39  markster
 * Some OSS fixes and a few lpc changes to make it actually work
 *
 * Revision 1.2  1996/08/20  20:35:41  jaf
 * Added functions for allocating and initializing lpc10_encoder_state
 * and lpc10_decoder_state structures.
 *
 * Revision 1.1  1996/08/19  22:31:40  jaf
 * Initial revision
 * */
/* Revision 1.3  1996/03/29  22:03:47  jaf */
/* Removed definitions for any constants that were no longer used. */

/* Revision 1.2  1996/03/26  19:34:33  jaf */
/* Added comments indicating which constants are not needed in an */
/* application that uses the LPC-10 coder. */

/* Revision 1.1  1996/02/07  14:43:51  jaf */
/* Initial revision */

/*   LPC Configuration parameters: */
/* Frame size, Prediction order, Pitch period */
/* $Log$
 * Revision 1.18  2003/10/21 18:08:11  markster
 * Fix include order
 *
 * Revision 1.5  2003/10/21 18:08:11  markster
 * Fix include order
 *
 * Revision 1.4  2003/10/21 02:57:29  markster
 * FreeBSD patch, take 2
 *
 * Revision 1.3  2003/10/16 21:11:30  martinp
 * Revert the previous patch since it's braking compilation
 *
 * Revision 1.1  2003/02/12 13:59:15  matteo
 * Initial revision
 *
 * Revision 1.2  2000/01/05 08:20:39  markster
 * Some OSS fixes and a few lpc changes to make it actually work
 *
 * Revision 1.2  1996/08/20  20:35:41  jaf
 * Added functions for allocating and initializing lpc10_encoder_state
 * and lpc10_decoder_state structures.
 *
 * Revision 1.1  1996/08/19  22:31:40  jaf
 * Initial revision
 * */
/* Revision 1.3  1996/03/29  22:05:55  jaf */
/* Commented out the common block variables that are not needed by the */
/* embedded version. */

/* Revision 1.2  1996/03/26  19:34:50  jaf */
/* Added comments indicating which constants are not needed in an */
/* application that uses the LPC-10 coder. */

/* Revision 1.1  1996/02/07  14:44:09  jaf */
/* Initial revision */

/*   LPC Processing control variables: */

/* *** Read-only: initialized in setup */

/*  Files for Speech, Parameter, and Bitstream Input & Output, */
/*    and message and debug outputs. */

/* Here are the only files which use these variables: */

/* lpcsim.f setup.f trans.f error.f vqsetup.f */

/* Many files which use fdebug are not listed, since it is only used in */
/* those other files conditionally, to print trace statements. */
/*    integer fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
/*  LPC order, Frame size, Quantization rate, Bits per frame, */
/*    Error correction */
/* Subroutine SETUP is the only place where order is assigned a value, */
/* and that value is 10.  It could increase efficiency 1% or so to */
/* declare order as a constant (i.e., a Fortran PARAMETER) instead of as
*/
/* a variable in a COMMON block, since it is used in many places in the */
/* core of the coding and decoding routines.  Actually, I take that back.
*/
/* At least when compiling with f2c, the upper bound of DO loops is */
/* stored in a local variable before the DO loop begins, and then that is
*/
/* compared against on each iteration. */
/* Similarly for lframe, which is given a value of MAXFRM in SETUP. */
/* Similarly for quant, which is given a value of 2400 in SETUP.  quant */
/* is used in only a few places, and never in the core coding and */
/* decoding routines, so it could be eliminated entirely. */
/* nbits is similar to quant, and is given a value of 54 in SETUP. */
/* corrp is given a value of .TRUE. in SETUP, and is only used in the */
/* subroutines ENCODE and DECODE.  It doesn't affect the speed of the */
/* coder significantly whether it is .TRUE. or .FALSE., or whether it is
*/
/* a constant or a variable, since it is only examined once per frame. */
/* Leaving it as a variable that is set to .TRUE.  seems like a good */
/* idea, since it does enable some error-correction capability for */
/* unvoiced frames, with no change in the coding rate, and no noticeable
*/
/* quality difference in the decoded speech. */
/*    integer quant, nbits */
/* *** Read/write: variables for debugging, not needed for LPC algorithm
*/

/*  Current frame, Unstable frames, Output clip count, Max onset buffer,
*/
/*    Debug listing detail level, Line count on listing page */

/* nframe is not needed for an embedded LPC10 at all. */
/* nunsfm is initialized to 0 in SETUP, and incremented in subroutine */
/* ERROR, which is only called from RCCHK.  When LPC10 is embedded into */
/* an application, I would recommend removing the call to ERROR in RCCHK,
*/
/* and remove ERROR and nunsfm completely. */
/* iclip is initialized to 0 in SETUP, and incremented in entry SWRITE in
*/
/* sread.f.  When LPC10 is embedded into an application, one might want */
/* to cause it to be incremented in a routine that takes the output of */
/* SYNTHS and sends it to an audio device.  It could be optionally */
/* displayed, for those that might want to know what it is. */
/* maxosp is never initialized to 0 in SETUP, although it probably should
*/
/* be, and it is updated in subroutine ANALYS.  I doubt that its value */
/* would be of much interest to an application in which LPC10 is */
/* embedded. */
/* listl and lincnt are not needed for an embedded LPC10 at all. */
/*    integer nframe, nunsfm, iclip, maxosp, listl, lincnt */
/*    common /contrl/ fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
/*    common /contrl/ quant, nbits */
/*    common /contrl/ nframe, nunsfm, iclip, maxosp, listl, lincnt */
    contrl_1.order = 10;
    contrl_1.lframe = 180;
    contrl_1.corrp = TRUE_;
    return 0;
} /* lpcini_ */

Variable Documentation

contrl_

struct { ... } contrl_

corrp

logical corrp

Definition at line 52 of file lpcini.c.

lframe

integer lframe

Definition at line 51 of file lpcini.c.

order

integer order

Definition at line 51 of file lpcini.c.