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Diffstat (limited to '1.2-netsec/codecs/lpc10/bsynz.c')
| -rw-r--r-- | 1.2-netsec/codecs/lpc10/bsynz.c | 447 |
1 files changed, 0 insertions, 447 deletions
diff --git a/1.2-netsec/codecs/lpc10/bsynz.c b/1.2-netsec/codecs/lpc10/bsynz.c deleted file mode 100644 index 5971a1a22..000000000 --- a/1.2-netsec/codecs/lpc10/bsynz.c +++ /dev/null @@ -1,447 +0,0 @@ -/* - -$Log$ -Revision 1.15 2004/06/26 03:50:14 markster -Merge source cleanups (bug #1911) - -Revision 1.14 2003/02/12 13:59:14 matteo -mer feb 12 14:56:57 CET 2003 - -Revision 1.1.1.1 2003/02/12 13:59:14 matteo -mer feb 12 14:56:57 CET 2003 - -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 20:18:55 jaf - * Removed all static local variables that were SAVE'd in the Fortran - * code, and put them in struct lpc10_decoder_state that is passed as an - * argument. - * - * Removed init function, since all initialization is now done in - * init_lpc10_decoder_state(). - * - * Revision 1.1 1996/08/19 22:32:58 jaf - * Initial revision - * - -*/ - -/* -- translated by f2c (version 19951025). - You must link the resulting object file with the libraries: - -lf2c -lm (in that order) -*/ - -#include "f2c.h" - -#ifdef P_R_O_T_O_T_Y_P_E_S -extern int bsynz_(real *coef, integer *ip, integer *iv, real *sout, real *rms, real *ratio, real *g2pass, struct lpc10_decoder_state *st); -/* comlen contrl_ 12 */ -/*:ref: random_ 4 0 */ -#endif - -/* Common Block Declarations */ - -extern struct { - integer order, lframe; - logical corrp; -} contrl_; - -#define contrl_1 contrl_ - -/* ***************************************************************** */ - -/* BSYNZ Version 54 */ - -/* $Log$ - * Revision 1.15 2004/06/26 03:50:14 markster - * Merge source cleanups (bug #1911) - * -/* Revision 1.14 2003/02/12 13:59:14 matteo -/* mer feb 12 14:56:57 CET 2003 -/* -/* Revision 1.1.1.1 2003/02/12 13:59:14 matteo -/* mer feb 12 14:56:57 CET 2003 -/* -/* 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 20:18:55 jaf - * Removed all static local variables that were SAVE'd in the Fortran - * code, and put them in struct lpc10_decoder_state that is passed as an - * argument. - * - * Removed init function, since all initialization is now done in - * init_lpc10_decoder_state(). - * - * Revision 1.1 1996/08/19 22:32:58 jaf - * Initial revision - * */ -/* Revision 1.4 1996/03/27 18:11:22 jaf */ -/* Changed the range of NOISE printed out in the debugging statements, */ -/* even though they are commented out. I didn't discover this until I */ -/* tried comparing two different versions of the LPC-10 coder, each with */ -/* full tracing enabled. */ - -/* Revision 1.3 1996/03/26 19:33:23 jaf */ -/* Commented out trace statements. */ - -/* Revision 1.2 1996/03/20 17:12:54 jaf */ -/* Added comments about which indices of array arguments are read or */ -/* written. */ - -/* Rearranged local variable declarations to indicate which need to be */ -/* saved from one invocation to the next. Added entry INITBSYNZ to */ -/* reinitialize the local state variables, if desired. */ - -/* Revision 1.1 1996/02/07 14:43:15 jaf */ -/* Initial revision */ - - -/* ***************************************************************** */ - -/* Synthesize One Pitch Epoch */ - -/* Input: */ -/* COEF - Predictor coefficients */ -/* Indices 1 through ORDER read. */ -/* IP - Pitch period (number of samples to synthesize) */ -/* IV - Voicing for the current epoch */ -/* RMS - Energy for the current epoch */ -/* RATIO - Energy slope for plosives */ -/* G2PASS- Sharpening factor for 2 pass synthesis */ -/* Output: */ -/* SOUT - Synthesized speech */ -/* Indices 1 through IP written. */ - -/* This subroutine maintains local state from one call to the next. 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 */ -/* INITBSYNZ. */ - -/* Subroutine */ int bsynz_(real *coef, integer *ip, integer *iv, - real *sout, real *rms, real *ratio, real *g2pass, - struct lpc10_decoder_state *st) -{ - /* Initialized data */ - - integer *ipo; - real *rmso; - static integer kexc[25] = { 8,-16,26,-48,86,-162,294,-502,718,-728,184, - 672,-610,-672,184,728,718,502,294,162,86,48,26,16,8 }; - real *exc; - real *exc2; - real *lpi1; - real *lpi2; - real *lpi3; - real *hpi1; - real *hpi2; - real *hpi3; - - /* System generated locals */ - integer i__1, i__2; - real r__1, r__2; - - /* Builtin functions */ - double sqrt(doublereal); - - /* Local variables */ - real gain, xssq; - integer i__, j, k; - real noise[166], pulse; - integer px; - real sscale; - extern integer random_(struct lpc10_decoder_state *); - real xy, sum, ssq; - real lpi0, hpi0; - -/* $Log$ - * Revision 1.15 2004/06/26 03:50:14 markster - * Merge source cleanups (bug #1911) - * -/* Revision 1.14 2003/02/12 13:59:14 matteo -/* mer feb 12 14:56:57 CET 2003 -/* -/* Revision 1.1.1.1 2003/02/12 13:59:14 matteo -/* mer feb 12 14:56:57 CET 2003 -/* -/* 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 20:18:55 jaf - * Removed all static local variables that were SAVE'd in the Fortran - * code, and put them in struct lpc10_decoder_state that is passed as an - * argument. - * - * Removed init function, since all initialization is now done in - * init_lpc10_decoder_state(). - * - * Revision 1.1 1996/08/19 22:32:58 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 */ -/* $Log$ - * Revision 1.15 2004/06/26 03:50:14 markster - * Merge source cleanups (bug #1911) - * -/* Revision 1.14 2003/02/12 13:59:14 matteo -/* mer feb 12 14:56:57 CET 2003 -/* -/* Revision 1.1.1.1 2003/02/12 13:59:14 matteo -/* mer feb 12 14:56:57 CET 2003 -/* -/* 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 20:18:55 jaf - * Removed all static local variables that were SAVE'd in the Fortran - * code, and put them in struct lpc10_decoder_state that is passed as an - * argument. - * - * Removed init function, since all initialization is now done in - * init_lpc10_decoder_state(). - * - * Revision 1.1 1996/08/19 22:32:58 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 */ -/* Function return value definitions */ -/* Parameters/constants */ -/* KEXC is not a Fortran PARAMETER, but it is an array initialized -*/ -/* with a DATA statement that is never modified. */ -/* Local variables that need not be saved */ -/* NOISE is declared with range (1:MAXPIT+MAXORD), but only indices -*/ -/* ORDER+1 through ORDER+IP are ever used, and I think that IP */ -/* .LE. MAXPIT. Why not declare it to be in the range (1:MAXPIT) */ -/* and use that range? */ -/* Local state */ -/* I believe that only indices 1 through ORDER of EXC need to be */ -/* saved from one invocation to the next, but we may as well save */ -/* the whole array. */ -/* None of these local variables were given initial values in the */ -/* original code. I'm guessing that 0 is a reasonable initial */ -/* value for all of them. */ - /* Parameter adjustments */ - if (coef) { - --coef; - } - if (sout) { - --sout; - } - - /* Function Body */ - ipo = &(st->ipo); - exc = &(st->exc[0]); - exc2 = &(st->exc2[0]); - lpi1 = &(st->lpi1); - lpi2 = &(st->lpi2); - lpi3 = &(st->lpi3); - hpi1 = &(st->hpi1); - hpi2 = &(st->hpi2); - hpi3 = &(st->hpi3); - rmso = &(st->rmso_bsynz); - -/* MAXPIT+MAXORD=166 */ -/* Calculate history scale factor XY and scale filter state */ -/* Computing MIN */ - r__1 = *rmso / (*rms + 1e-6f); - xy = min(r__1,8.f); - *rmso = *rms; - i__1 = contrl_1.order; - for (i__ = 1; i__ <= i__1; ++i__) { - exc2[i__ - 1] = exc2[*ipo + i__ - 1] * xy; - } - *ipo = *ip; - if (*iv == 0) { -/* Generate white noise for unvoiced */ - i__1 = *ip; - for (i__ = 1; i__ <= i__1; ++i__) { - exc[contrl_1.order + i__ - 1] = (real) (random_(st) / 64); - } -/* Impulse doublet excitation for plosives */ -/* (RANDOM()+32768) is in the range 0 to 2**16-1. Therefore the - */ -/* following expression should be evaluated using integers with -at */ -/* least 32 bits (16 isn't enough), and PX should be in the rang -e */ -/* ORDER+1+0 through ORDER+1+(IP-2) .EQ. ORDER+IP-1. */ - px = (random_(st) + 32768) * (*ip - 1) / 65536 + contrl_1.order + 1; - r__1 = *ratio / 4 * 1.f; - pulse = r__1 * 342; - if (pulse > 2e3f) { - pulse = 2e3f; - } - exc[px - 1] += pulse; - exc[px] -= pulse; -/* Load voiced excitation */ - } else { - sscale = sqrt((real) (*ip)) / 6.928f; - i__1 = *ip; - for (i__ = 1; i__ <= i__1; ++i__) { - exc[contrl_1.order + i__ - 1] = 0.f; - if (i__ <= 25) { - exc[contrl_1.order + i__ - 1] = sscale * kexc[i__ - 1]; - } - lpi0 = exc[contrl_1.order + i__ - 1]; - r__2 = exc[contrl_1.order + i__ - 1] * .125f + *lpi1 * .75f; - r__1 = r__2 + *lpi2 * .125f; - exc[contrl_1.order + i__ - 1] = r__1 + *lpi3 * 0.f; - *lpi3 = *lpi2; - *lpi2 = *lpi1; - *lpi1 = lpi0; - } - i__1 = *ip; - for (i__ = 1; i__ <= i__1; ++i__) { - noise[contrl_1.order + i__ - 1] = random_(st) * 1.f / 64; - hpi0 = noise[contrl_1.order + i__ - 1]; - r__2 = noise[contrl_1.order + i__ - 1] * -.125f + *hpi1 * .25f; - r__1 = r__2 + *hpi2 * -.125f; - noise[contrl_1.order + i__ - 1] = r__1 + *hpi3 * 0.f; - *hpi3 = *hpi2; - *hpi2 = *hpi1; - *hpi1 = hpi0; - } - i__1 = *ip; - for (i__ = 1; i__ <= i__1; ++i__) { - exc[contrl_1.order + i__ - 1] += noise[contrl_1.order + i__ - 1]; - } - } -/* Synthesis filters: */ -/* Modify the excitation with all-zero filter 1 + G*SUM */ - xssq = 0.f; - i__1 = *ip; - for (i__ = 1; i__ <= i__1; ++i__) { - k = contrl_1.order + i__; - sum = 0.f; - i__2 = contrl_1.order; - for (j = 1; j <= i__2; ++j) { - sum += coef[j] * exc[k - j - 1]; - } - sum *= *g2pass; - exc2[k - 1] = sum + exc[k - 1]; - } -/* Synthesize using the all pole filter 1 / (1 - SUM) */ - i__1 = *ip; - for (i__ = 1; i__ <= i__1; ++i__) { - k = contrl_1.order + i__; - sum = 0.f; - i__2 = contrl_1.order; - for (j = 1; j <= i__2; ++j) { - sum += coef[j] * exc2[k - j - 1]; - } - exc2[k - 1] = sum + exc2[k - 1]; - xssq += exc2[k - 1] * exc2[k - 1]; - } -/* Save filter history for next epoch */ - i__1 = contrl_1.order; - for (i__ = 1; i__ <= i__1; ++i__) { - exc[i__ - 1] = exc[*ip + i__ - 1]; - exc2[i__ - 1] = exc2[*ip + i__ - 1]; - } -/* Apply gain to match RMS */ - r__1 = *rms * *rms; - ssq = r__1 * *ip; - gain = sqrt(ssq / xssq); - i__1 = *ip; - for (i__ = 1; i__ <= i__1; ++i__) { - sout[i__] = gain * exc2[contrl_1.order + i__ - 1]; - } - return 0; -} /* bsynz_ */ |