/* Subroutine */ int lpc10_decode(integer *bits, real *speech,
struct lpc10_decoder_state *st)
{
integer irms, voice[2], pitch, ipitv;
extern /* Subroutine */ int decode_(integer *, integer *, integer *,
integer *, integer *, real *, real *, struct lpc10_decoder_state *);
real rc[10];
extern /* Subroutine */ int chanrd_(integer *, integer *, integer *,
integer *, integer *), synths_(integer *,
integer *, real *, real *, real *, integer *,
struct lpc10_decoder_state *);
integer irc[10], len;
real rms;
/* $Log: lpcdec.c,v $co: warning: `/* $Log' is obsolescent; use ` * $Log'.
* Revision 1.1 2010/02/24 02:19:06 shorne
* First commit of h323plus mirror
*
/* Revision 1.2 2006/08/01 13:06:50 rjongbloed
/* Added a raft of unvalidated audio codecs from OpenH323 tree
/*
/* Revision 1.1.2.1 2006/07/22 14:03:17 rjongbloed
/* Added more plug ins
/*
/* Revision 1.1.2.1 2006/05/08 13:49:57 rjongbloed
/* Imported all the audio codec plug ins from OpenH323
/*
/* Revision 1.1 2004/05/04 11:16:43 csoutheren
/* Initial version
/*
/* Revision 1.1 2000/06/05 04:45:12 robertj
/* Added LPC-10 2400bps codec
/*
* Revision 1.2 1996/08/20 20:30:11 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().
*
* Changed name of function from lpcenc_ to lpc10_encode, simply to make
* all lpc10 functions have more consistent naming with each other.
*
* Revision 1.1 1996/08/19 22:31:48 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 */
/* Arguments */
/* $Log: lpcdec.c,v $co: warning: `/* $Log' is obsolescent; use ` * $Log'.
* Revision 1.1 2010/02/24 02:19:06 shorne
* First commit of h323plus mirror
*
/* Revision 1.2 2006/08/01 13:06:50 rjongbloed
/* Added a raft of unvalidated audio codecs from OpenH323 tree
/*
/* Revision 1.1.2.1 2006/07/22 14:03:17 rjongbloed
/* Added more plug ins
/*
/* Revision 1.1.2.1 2006/05/08 13:49:57 rjongbloed
/* Imported all the audio codec plug ins from OpenH323
/*
/* Revision 1.1 2004/05/04 11:16:43 csoutheren
/* Initial version
/*
/* Revision 1.1 2000/06/05 04:45:12 robertj
/* Added LPC-10 2400bps codec
/*
* Revision 1.2 1996/08/20 20:30:11 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().
*
* Changed name of function from lpcenc_ to lpc10_encode, simply to make
* all lpc10 functions have more consistent naming with each other.
*
* Revision 1.1 1996/08/19 22:31:48 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 */
/* Local variables that need not be saved */
/* Uncoded speech parameters */
/* Coded speech parameters */
/* Others */
/* Local state */
/* None */
/* Parameter adjustments */
if (bits) {
--bits;
}
if (speech) {
--speech;
}
/* Function Body */
chanrd_(&c__10, &ipitv, &irms, irc, &bits[1]);
decode_(&ipitv, &irms, irc, voice, &pitch, &rms, rc, st);
synths_(voice, &pitch, &rms, rc, &speech[1], &len, st);
return 0;
} /* lpcdec_ */
/*< SUBROUTINE LPCDEC(BITS, SPEECH) >*/
/* Subroutine */ int lpcdec_0_(int n__, integer *bits, real *speech)
{
integer irms, voice[2], pitch, ipitv;
extern /* Subroutine */ int decode_(integer *, integer *, integer *,
integer *, integer *, real *, real *);
real rc[10];
extern /* Subroutine */ int chanrd_(integer *, integer *, integer *,
integer *, integer *), initdecode_(void), synths_(integer *,
integer *, real *, real *, real *, integer *), initsynths_(void);
integer irc[10], len;
real rms;
/*< INCLUDE 'config.fh' >*/
/*< INCLUDE 'contrl.fh' >*/
/* $Log: lpcdec.c,v $
/* Revision 1.2 2001/01/25 23:45:49 jpoehlmann
/* Version 1.7c. Identical with files on the ftp Server ftp.franken.de.
/* (+ 1 patch in cli.c, wich is on the server too)
/* Not compiled now
/* */
/* 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 */
/*< parameter (MAXFRM = 180, MAXORD = 10, MAXPIT = 156) >*/
/*< INTEGER BITS(54) >*/
/* Arguments */
/* $Log: lpcdec.c,v $
/* Revision 1.2 2001/01/25 23:45:49 jpoehlmann
/* Version 1.7c. Identical with files on the ftp Server ftp.franken.de.
/* (+ 1 patch in cli.c, wich is on the server too)
/* Not compiled now
/* */
/* 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 */
/*< logical corrp >*/
/* *** 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/ order, lframe >*/
/* common /contrl/ quant, nbits */
/*< common /contrl/ corrp >*/
/* common /contrl/ nframe, nunsfm, iclip, maxosp, listl, lincnt */
/*< REAL SPEECH(MAXFRM) >*/
/* Local variables that need not be saved */
/* Uncoded speech parameters */
/*< INTEGER VOICE(2), PITCH >*/
/*< REAL RMS, RC(MAXORD) >*/
/* Coded speech parameters */
/*< INTEGER IPITV, IRMS, IRC(MAXORD) >*/
/* Others */
/*< INTEGER LEN >*/
/* Local state */
/* None */
/*< CALL CHANRD(MAXORD, IPITV, IRMS, IRC, BITS) >*/
/* Parameter adjustments */
if (bits) {
--bits;
}
if (speech) {
--speech;
}
/* Function Body */
switch(n__) {
case 1: goto L_initlpcdec;
}
chanrd_(&c__10, &ipitv, &irms, irc, &bits[1]);
/*< CALL DECODE(IPITV, IRMS, IRC, VOICE, PITCH, RMS, RC) >*/
decode_(&ipitv, &irms, irc, voice, &pitch, &rms, rc);
/*< CALL SYNTHS(VOICE, PITCH, RMS, RC, SPEECH, LEN) >*/
synths_(voice, &pitch, &rms, rc, &speech[1], &len);
/*< RETURN >*/
return 0;
/*< ENTRY INITLPCDEC () >*/
L_initlpcdec:
/* Call initialization entries for any subroutines above that have
*/
/* them. */
/*< CALL INITDECODE () >*/
initdecode_();
/*< CALL INITSYNTHS () >*/
initsynths_();
/*< RETURN >*/
return 0;
/*< END >*/
} /* lpcdec_ */