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https://origsvn.digium.com/svn/asterisk/branches/1.4 ........ r45079 | file | 2006-10-13 14:42:49 -0400 (Fri, 13 Oct 2006) | 2 lines And file said... let the compiler warnings STOP! ........ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@45080 65c4cc65-6c06-0410-ace0-fbb531ad65f3
374 lines
12 KiB
C
374 lines
12 KiB
C
/*
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$Log$
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Revision 1.15 2004/06/26 03:50:14 markster
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Merge source cleanups (bug #1911)
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Revision 1.14 2003/02/12 13:59:15 matteo
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mer feb 12 14:56:57 CET 2003
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Revision 1.1.1.1 2003/02/12 13:59:15 matteo
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mer feb 12 14:56:57 CET 2003
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Revision 1.2 2000/01/05 08:20:39 markster
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Some OSS fixes and a few lpc changes to make it actually work
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* Revision 1.1 1996/08/19 22:32:21 jaf
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* Initial revision
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*
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*/
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/* -- translated by f2c (version 19951025).
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You must link the resulting object file with the libraries:
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-lf2c -lm (in that order)
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*/
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#include "f2c.h"
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#ifdef P_R_O_T_O_T_Y_P_E_S
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extern int encode_(integer *voice, integer *pitch, real *rms, real *rc, integer *ipitch, integer *irms, integer *irc);
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/* comlen contrl_ 12 */
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#endif
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/* Common Block Declarations */
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extern struct {
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integer order, lframe;
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logical corrp;
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} contrl_;
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#define contrl_1 contrl_
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/* Table of constant values */
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static integer c__2 = 2;
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/* ***************************************************************** */
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/* ENCODE Version 54 */
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/* $Log$
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* Revision 1.15 2004/06/26 03:50:14 markster
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* Merge source cleanups (bug #1911)
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*
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* Revision 1.14 2003/02/12 13:59:15 matteo
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* mer feb 12 14:56:57 CET 2003
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*
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* Revision 1.1.1.1 2003/02/12 13:59:15 matteo
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* mer feb 12 14:56:57 CET 2003
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*
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* Revision 1.2 2000/01/05 08:20:39 markster
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* Some OSS fixes and a few lpc changes to make it actually work
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*
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* Revision 1.1 1996/08/19 22:32:21 jaf
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* Initial revision
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* */
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/* Revision 1.5 1996/03/26 19:35:50 jaf */
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/* Commented out trace statements. */
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/* Revision 1.4 1996/03/21 00:26:29 jaf */
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/* Added the comment that this subroutine has no local state. */
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/* In the last check-in, I forgot to mention that I had added comments */
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/* explaining which indices of array arguments are read or written. */
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/* Revision 1.3 1996/03/21 00:22:39 jaf */
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/* Added comments explaining that all local arrays are effectively */
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/* constants. */
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/* Revision 1.2 1996/03/13 18:48:33 jaf */
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/* Comments added explaining that none of the local variables of this */
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/* subroutine need to be saved from one invocation to the next. */
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/* Revision 1.1 1996/02/07 14:45:29 jaf */
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/* Initial revision */
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/* ***************************************************************** */
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/* Quantize LPC parameters for transmission */
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/* INPUTS: */
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/* VOICE - Half frame voicing decisions */
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/* Indices 1 through 2 read. */
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/* PITCH - Pitch */
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/* RMS - Energy */
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/* RC - Reflection coefficients */
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/* Indices 1 through ORDER read. */
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/* CORRP - Error Correction: TRUE = yes, FALSE = none */
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/* (this is defined in file control.fh) */
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/* OUTPUTS: */
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/* IPITCH - Coded pitch and voicing */
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/* IRMS - Quantized energy */
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/* IRC - Quantized reflection coefficients */
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/* Indices 1 through MAX(ORDER,2) written. */
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/* If CORRP is .TRUE., then indices 1 through 10 written */
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/* for unvoiced frames. */
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/* This subroutine has no local state. */
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/* Subroutine */ int encode_(integer *voice, integer *pitch, real *rms, real *
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rc, integer *ipitch, integer *irms, integer *irc)
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{
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/* Initialized data */
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static integer enctab[16] = { 0,7,11,12,13,10,6,1,14,9,5,2,3,4,8,15 };
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static integer entau[60] = { 19,11,27,25,29,21,23,22,30,14,15,7,39,38,46,
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42,43,41,45,37,53,49,51,50,54,52,60,56,58,26,90,88,92,84,86,82,83,
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81,85,69,77,73,75,74,78,70,71,67,99,97,113,112,114,98,106,104,108,
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100,101,76 };
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static integer enadd[8] = { 1920,-768,2432,1280,3584,1536,2816,-1152 };
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static real enscl[8] = { .0204f,.0167f,.0145f,.0147f,.0143f,.0135f,.0125f,
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.0112f };
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static integer enbits[8] = { 6,5,4,4,4,4,3,3 };
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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,
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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,
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9,10,10,11,11,12,13,14,15 };
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static integer rmst[64] = { 1024,936,856,784,718,656,600,550,502,460,420,
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384,352,328,294,270,246,226,206,188,172,158,144,132,120,110,102,
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92,84,78,70,64,60,54,50,46,42,38,34,32,30,26,24,22,20,18,17,16,15,
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14,13,12,11,10,9,8,7,6,5,4,3,2,1,0 };
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/* System generated locals */
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integer i__1, i__2;
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/* Builtin functions */
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integer pow_ii(integer *, integer *);
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/* Local variables */
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integer idel, nbit, i__, j, i2, i3, mrk;
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/* $Log$
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* Revision 1.15 2004/06/26 03:50:14 markster
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* Merge source cleanups (bug #1911)
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*
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* Revision 1.14 2003/02/12 13:59:15 matteo
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* mer feb 12 14:56:57 CET 2003
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*
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* Revision 1.1.1.1 2003/02/12 13:59:15 matteo
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* mer feb 12 14:56:57 CET 2003
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*
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* Revision 1.2 2000/01/05 08:20:39 markster
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* Some OSS fixes and a few lpc changes to make it actually work
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*
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* Revision 1.1 1996/08/19 22:32:21 jaf
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* Initial revision
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* */
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/* Revision 1.3 1996/03/29 22:03:47 jaf */
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/* Removed definitions for any constants that were no longer used. */
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/* Revision 1.2 1996/03/26 19:34:33 jaf */
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/* Added comments indicating which constants are not needed in an */
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/* application that uses the LPC-10 coder. */
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/* Revision 1.1 1996/02/07 14:43:51 jaf */
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/* Initial revision */
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/* LPC Configuration parameters: */
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/* Frame size, Prediction order, Pitch period */
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/* Arguments */
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/* $Log$
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* Revision 1.15 2004/06/26 03:50:14 markster
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* Merge source cleanups (bug #1911)
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*
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* Revision 1.14 2003/02/12 13:59:15 matteo
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* mer feb 12 14:56:57 CET 2003
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*
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* Revision 1.1.1.1 2003/02/12 13:59:15 matteo
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* mer feb 12 14:56:57 CET 2003
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*
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* Revision 1.2 2000/01/05 08:20:39 markster
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* Some OSS fixes and a few lpc changes to make it actually work
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*
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* Revision 1.1 1996/08/19 22:32:21 jaf
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* Initial revision
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* */
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/* Revision 1.3 1996/03/29 22:05:55 jaf */
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/* Commented out the common block variables that are not needed by the */
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/* embedded version. */
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/* Revision 1.2 1996/03/26 19:34:50 jaf */
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/* Added comments indicating which constants are not needed in an */
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/* application that uses the LPC-10 coder. */
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/* Revision 1.1 1996/02/07 14:44:09 jaf */
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/* Initial revision */
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/* LPC Processing control variables: */
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/* *** Read-only: initialized in setup */
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/* Files for Speech, Parameter, and Bitstream Input & Output, */
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/* and message and debug outputs. */
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/* Here are the only files which use these variables: */
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/* lpcsim.f setup.f trans.f error.f vqsetup.f */
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/* Many files which use fdebug are not listed, since it is only used in */
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/* those other files conditionally, to print trace statements. */
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/* integer fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
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/* LPC order, Frame size, Quantization rate, Bits per frame, */
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/* Error correction */
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/* Subroutine SETUP is the only place where order is assigned a value, */
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/* and that value is 10. It could increase efficiency 1% or so to */
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/* declare order as a constant (i.e., a Fortran PARAMETER) instead of as
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*/
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/* a variable in a COMMON block, since it is used in many places in the */
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/* core of the coding and decoding routines. Actually, I take that back.
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*/
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/* At least when compiling with f2c, the upper bound of DO loops is */
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/* stored in a local variable before the DO loop begins, and then that is
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*/
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/* compared against on each iteration. */
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/* Similarly for lframe, which is given a value of MAXFRM in SETUP. */
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/* Similarly for quant, which is given a value of 2400 in SETUP. quant */
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/* is used in only a few places, and never in the core coding and */
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/* decoding routines, so it could be eliminated entirely. */
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/* nbits is similar to quant, and is given a value of 54 in SETUP. */
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/* corrp is given a value of .TRUE. in SETUP, and is only used in the */
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/* subroutines ENCODE and DECODE. It doesn't affect the speed of the */
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/* coder significantly whether it is .TRUE. or .FALSE., or whether it is
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*/
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/* a constant or a variable, since it is only examined once per frame. */
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/* Leaving it as a variable that is set to .TRUE. seems like a good */
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/* idea, since it does enable some error-correction capability for */
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/* unvoiced frames, with no change in the coding rate, and no noticeable
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*/
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/* quality difference in the decoded speech. */
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/* integer quant, nbits */
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/* *** Read/write: variables for debugging, not needed for LPC algorithm
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*/
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/* Current frame, Unstable frames, Output clip count, Max onset buffer,
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*/
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/* Debug listing detail level, Line count on listing page */
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/* nframe is not needed for an embedded LPC10 at all. */
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/* nunsfm is initialized to 0 in SETUP, and incremented in subroutine */
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/* ERROR, which is only called from RCCHK. When LPC10 is embedded into */
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/* an application, I would recommend removing the call to ERROR in RCCHK,
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*/
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/* and remove ERROR and nunsfm completely. */
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/* iclip is initialized to 0 in SETUP, and incremented in entry SWRITE in
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*/
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/* sread.f. When LPC10 is embedded into an application, one might want */
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/* to cause it to be incremented in a routine that takes the output of */
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/* SYNTHS and sends it to an audio device. It could be optionally */
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/* displayed, for those that might want to know what it is. */
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/* maxosp is never initialized to 0 in SETUP, although it probably should
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*/
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/* be, and it is updated in subroutine ANALYS. I doubt that its value */
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/* would be of much interest to an application in which LPC10 is */
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/* embedded. */
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/* listl and lincnt are not needed for an embedded LPC10 at all. */
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/* integer nframe, nunsfm, iclip, maxosp, listl, lincnt */
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/* common /contrl/ fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
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/* common /contrl/ quant, nbits */
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/* common /contrl/ nframe, nunsfm, iclip, maxosp, listl, lincnt */
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/* Parameters/constants */
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/* These arrays are not Fortran PARAMETER's, but they are defined */
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/* by DATA statements below, and their contents are never altered.
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*/
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/* Local variables that need not be saved */
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/* Parameter adjustments */
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--irc;
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--rc;
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--voice;
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/* Function Body */
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/* Scale RMS and RC's to integers */
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*irms = (integer)*rms;
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i__1 = contrl_1.order;
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for (i__ = 1; i__ <= i__1; ++i__) {
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irc[i__] = (integer)(rc[i__] * 32768.f);
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}
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/* IF(LISTL.GE.3)WRITE(FDEBUG,800)VOICE,PITCH,IRMS,(IRC(I),I=1,ORDER) */
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/* 800 FORMAT(1X,/,' <<ENCODE IN>>',T32,2I3,I6,I5,T50,10I8) */
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/* Encode pitch and voicing */
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if (voice[1] != 0 && voice[2] != 0) {
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*ipitch = entau[*pitch - 1];
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} else {
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if (contrl_1.corrp) {
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*ipitch = 0;
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if (voice[1] != voice[2]) {
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*ipitch = 127;
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}
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} else {
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*ipitch = (voice[1] << 1) + voice[2];
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}
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}
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/* Encode RMS by binary table search */
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j = 32;
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idel = 16;
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*irms = min(*irms,1023);
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while(idel > 0) {
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if (*irms > rmst[j - 1]) {
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j -= idel;
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}
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if (*irms < rmst[j - 1]) {
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j += idel;
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}
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idel /= 2;
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}
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if (*irms > rmst[j - 1]) {
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--j;
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}
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*irms = 31 - j / 2;
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/* Encode RC(1) and (2) as log-area-ratios */
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for (i__ = 1; i__ <= 2; ++i__) {
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i2 = irc[i__];
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mrk = 0;
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if (i2 < 0) {
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i2 = -i2;
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mrk = 1;
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}
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i2 /= 512;
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i2 = min(i2,63);
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i2 = entab6[i2];
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if (mrk != 0) {
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i2 = -i2;
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}
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irc[i__] = i2;
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}
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/* Encode RC(3) - (10) linearly, remove bias then scale */
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i__1 = contrl_1.order;
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for (i__ = 3; i__ <= i__1; ++i__) {
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i2 = irc[i__] / 2;
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i2 = (integer)((i2 + enadd[contrl_1.order + 1 - i__ - 1]) * enscl[
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contrl_1.order + 1 - i__ - 1]);
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/* Computing MIN */
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i__2 = max(i2,-127);
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i2 = min(i__2,127);
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nbit = enbits[contrl_1.order + 1 - i__ - 1];
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i3 = 0;
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if (i2 < 0) {
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i3 = -1;
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}
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i2 /= pow_ii(&c__2, &nbit);
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if (i3 == -1) {
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--i2;
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}
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irc[i__] = i2;
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}
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/* Protect the most significant bits of the most */
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/* important parameters during non-voiced frames. */
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/* RC(1) - RC(4) are protected using 20 parity bits */
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/* replacing RC(5) - RC(10). */
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if (contrl_1.corrp) {
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if (*ipitch == 0 || *ipitch == 127) {
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irc[5] = enctab[(irc[1] & 30) / 2];
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irc[6] = enctab[(irc[2] & 30) / 2];
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irc[7] = enctab[(irc[3] & 30) / 2];
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irc[8] = enctab[(*irms & 30) / 2];
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irc[9] = enctab[(irc[4] & 30) / 2] / 2;
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irc[10] = enctab[(irc[4] & 30) / 2] & 1;
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}
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}
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/* IF(LISTL.GE.3)WRITE(FDEBUG,801)VOICE,IPITCH,IRMS,(IRC(J),J=1,ORDER) */
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/* 801 FORMAT(1X,'<<ENCODE OUT>>',T32,2I3,I6,I5,T50,10I8) */
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return 0;
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} /* encode_ */
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