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Diffstat (limited to '1.2-netsec/codecs/lpc10/encode.c')
| -rw-r--r-- | 1.2-netsec/codecs/lpc10/encode.c | 373 |
1 files changed, 0 insertions, 373 deletions
diff --git a/1.2-netsec/codecs/lpc10/encode.c b/1.2-netsec/codecs/lpc10/encode.c deleted file mode 100644 index 109a42264..000000000 --- a/1.2-netsec/codecs/lpc10/encode.c +++ /dev/null @@ -1,373 +0,0 @@ -/* - -$Log$ -Revision 1.15 2004/06/26 03:50:14 markster -Merge source cleanups (bug #1911) - -Revision 1.14 2003/02/12 13:59:15 matteo -mer feb 12 14:56:57 CET 2003 - -Revision 1.1.1.1 2003/02/12 13:59:15 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 1.1 1996/08/19 22:32:21 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 encode_(integer *voice, integer *pitch, real *rms, real *rc, integer *ipitch, integer *irms, integer *irc); -/* comlen contrl_ 12 */ -#endif - -/* Common Block Declarations */ - -extern struct { - integer order, lframe; - logical corrp; -} contrl_; - -#define contrl_1 contrl_ - -/* Table of constant values */ - -static integer c__2 = 2; - -/* ***************************************************************** */ - -/* ENCODE Version 54 */ - -/* $Log$ - * Revision 1.15 2004/06/26 03:50:14 markster - * Merge source cleanups (bug #1911) - * -/* Revision 1.14 2003/02/12 13:59:15 matteo -/* mer feb 12 14:56:57 CET 2003 -/* -/* Revision 1.1.1.1 2003/02/12 13:59:15 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 1.1 1996/08/19 22:32:21 jaf - * Initial revision - * */ -/* Revision 1.5 1996/03/26 19:35:50 jaf */ -/* Commented out trace statements. */ - -/* Revision 1.4 1996/03/21 00:26:29 jaf */ -/* Added the comment that this subroutine has no local state. */ - -/* In the last check-in, I forgot to mention that I had added comments */ -/* explaining which indices of array arguments are read or written. */ - -/* Revision 1.3 1996/03/21 00:22:39 jaf */ -/* Added comments explaining that all local arrays are effectively */ -/* constants. */ - -/* Revision 1.2 1996/03/13 18:48:33 jaf */ -/* Comments added explaining that none of the local variables of this */ -/* subroutine need to be saved from one invocation to the next. */ - -/* Revision 1.1 1996/02/07 14:45:29 jaf */ -/* Initial revision */ - - -/* ***************************************************************** */ - -/* Quantize LPC parameters for transmission */ - -/* INPUTS: */ -/* VOICE - Half frame voicing decisions */ -/* Indices 1 through 2 read. */ -/* PITCH - Pitch */ -/* RMS - Energy */ -/* RC - Reflection coefficients */ -/* Indices 1 through ORDER read. */ -/* CORRP - Error Correction: TRUE = yes, FALSE = none */ -/* (this is defined in file control.fh) */ -/* OUTPUTS: */ -/* IPITCH - Coded pitch and voicing */ -/* IRMS - Quantized energy */ -/* IRC - Quantized reflection coefficients */ -/* Indices 1 through MAX(ORDER,2) written. */ -/* If CORRP is .TRUE., then indices 1 through 10 written */ -/* for unvoiced frames. */ - -/* This subroutine has no local state. */ - -/* Subroutine */ int encode_(integer *voice, integer *pitch, real *rms, real * - rc, integer *ipitch, integer *irms, integer *irc) -{ - /* Initialized data */ - - static integer enctab[16] = { 0,7,11,12,13,10,6,1,14,9,5,2,3,4,8,15 }; - static integer entau[60] = { 19,11,27,25,29,21,23,22,30,14,15,7,39,38,46, - 42,43,41,45,37,53,49,51,50,54,52,60,56,58,26,90,88,92,84,86,82,83, - 81,85,69,77,73,75,74,78,70,71,67,99,97,113,112,114,98,106,104,108, - 100,101,76 }; - static integer enadd[8] = { 1920,-768,2432,1280,3584,1536,2816,-1152 }; - static real enscl[8] = { .0204f,.0167f,.0145f,.0147f,.0143f,.0135f,.0125f, - .0112f }; - static integer enbits[8] = { 6,5,4,4,4,4,3,3 }; - static integer entab6[64] = { 0,0,0,0,0,0,1,1,1,1,1,1,1,2,2,2,2,2,2,2,3,3, - 3,3,3,3,3,4,4,4,4,4,4,4,5,5,5,5,5,6,6,6,6,6,7,7,7,7,7,8,8,8,8,9,9, - 9,10,10,11,11,12,13,14,15 }; - static integer rmst[64] = { 1024,936,856,784,718,656,600,550,502,460,420, - 384,352,328,294,270,246,226,206,188,172,158,144,132,120,110,102, - 92,84,78,70,64,60,54,50,46,42,38,34,32,30,26,24,22,20,18,17,16,15, - 14,13,12,11,10,9,8,7,6,5,4,3,2,1,0 }; - - /* System generated locals */ - integer i__1, i__2; - - /* Builtin functions */ - integer pow_ii(integer *, integer *); - - /* Local variables */ - integer idel, nbit, i__, j, i2, i3, mrk; - -/* $Log$ - * Revision 1.15 2004/06/26 03:50:14 markster - * Merge source cleanups (bug #1911) - * -/* Revision 1.14 2003/02/12 13:59:15 matteo -/* mer feb 12 14:56:57 CET 2003 -/* -/* Revision 1.1.1.1 2003/02/12 13:59:15 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 1.1 1996/08/19 22:32:21 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 13:59:15 matteo -/* mer feb 12 14:56:57 CET 2003 -/* -/* Revision 1.1.1.1 2003/02/12 13:59:15 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 1.1 1996/08/19 22:32:21 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 */ -/* Parameters/constants */ -/* These arrays are not Fortran PARAMETER's, but they are defined */ -/* by DATA statements below, and their contents are never altered. -*/ -/* Local variables that need not be saved */ - /* Parameter adjustments */ - --irc; - --rc; - --voice; - - /* Function Body */ -/* Scale RMS and RC's to integers */ - *irms = *rms; - i__1 = contrl_1.order; - for (i__ = 1; i__ <= i__1; ++i__) { - irc[i__] = rc[i__] * 32768.f; - } -/* IF(LISTL.GE.3)WRITE(FDEBUG,800)VOICE,PITCH,IRMS,(IRC(I),I=1,ORDER) */ -/* 800 FORMAT(1X,/,' <<ENCODE IN>>',T32,2I3,I6,I5,T50,10I8) */ -/* Encode pitch and voicing */ - if (voice[1] != 0 && voice[2] != 0) { - *ipitch = entau[*pitch - 1]; - } else { - if (contrl_1.corrp) { - *ipitch = 0; - if (voice[1] != voice[2]) { - *ipitch = 127; - } - } else { - *ipitch = (voice[1] << 1) + voice[2]; - } - } -/* Encode RMS by binary table search */ - j = 32; - idel = 16; - *irms = min(*irms,1023); - while(idel > 0) { - if (*irms > rmst[j - 1]) { - j -= idel; - } - if (*irms < rmst[j - 1]) { - j += idel; - } - idel /= 2; - } - if (*irms > rmst[j - 1]) { - --j; - } - *irms = 31 - j / 2; -/* Encode RC(1) and (2) as log-area-ratios */ - for (i__ = 1; i__ <= 2; ++i__) { - i2 = irc[i__]; - mrk = 0; - if (i2 < 0) { - i2 = -i2; - mrk = 1; - } - i2 /= 512; - i2 = min(i2,63); - i2 = entab6[i2]; - if (mrk != 0) { - i2 = -i2; - } - irc[i__] = i2; - } -/* Encode RC(3) - (10) linearly, remove bias then scale */ - i__1 = contrl_1.order; - for (i__ = 3; i__ <= i__1; ++i__) { - i2 = irc[i__] / 2; - i2 = (i2 + enadd[contrl_1.order + 1 - i__ - 1]) * enscl[ - contrl_1.order + 1 - i__ - 1]; -/* Computing MIN */ - i__2 = max(i2,-127); - i2 = min(i__2,127); - nbit = enbits[contrl_1.order + 1 - i__ - 1]; - i3 = 0; - if (i2 < 0) { - i3 = -1; - } - i2 /= pow_ii(&c__2, &nbit); - if (i3 == -1) { - --i2; - } - irc[i__] = i2; - } -/* Protect the most significant bits of the most */ -/* important parameters during non-voiced frames. */ -/* RC(1) - RC(4) are protected using 20 parity bits */ -/* replacing RC(5) - RC(10). */ - if (contrl_1.corrp) { - if (*ipitch == 0 || *ipitch == 127) { - irc[5] = enctab[(irc[1] & 30) / 2]; - irc[6] = enctab[(irc[2] & 30) / 2]; - irc[7] = enctab[(irc[3] & 30) / 2]; - irc[8] = enctab[(*irms & 30) / 2]; - irc[9] = enctab[(irc[4] & 30) / 2] / 2; - irc[10] = enctab[(irc[4] & 30) / 2] & 1; - } - } -/* IF(LISTL.GE.3)WRITE(FDEBUG,801)VOICE,IPITCH,IRMS,(IRC(J),J=1,ORDER) */ -/* 801 FORMAT(1X,'<<ENCODE OUT>>',T32,2I3,I6,I5,T50,10I8) */ - return 0; -} /* encode_ */ - |