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git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@125 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Michael Jerris
242
libs/codec/lpc10/placea.c
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242
libs/codec/lpc10/placea.c
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/*
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$Log$
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Revision 1.16 2004/06/26 03:50:14 markster
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Merge source cleanups (bug #1911)
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Revision 1.15 2003/09/19 01:20:22 markster
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Code cleanups (bug #66)
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Revision 1.2 2003/09/19 01:20:22 markster
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Code cleanups (bug #66)
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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 1.3 2001/04/12 21:27:53 markh
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app_record now supports wildcards of sort so your output file is not overwritten every time it's run. File.h got a documentation update on the ast_fileexists to include the return call. Watch out for the placea.c placev.c code, it's updates have not been tested yet. Just a few parenthesis to make it compile nicer on newer gcc versions with all the -W flags set.
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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 22:31:07 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 placea_(integer *ipitch, integer *voibuf, integer *obound, integer *af, integer *vwin, integer *awin, integer *ewin, integer *lframe, integer *maxwin);
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#endif
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/* *********************************************************************** */
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/* PLACEA Version 48 */
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/* $Log$
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* Revision 1.16 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 1.15 2003/09/19 01:20:22 markster
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/* Code cleanups (bug #66)
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/*
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/* Revision 1.2 2003/09/19 01:20:22 markster
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/* Code cleanups (bug #66)
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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 1.3 2001/04/12 21:27:53 markh
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/* app_record now supports wildcards of sort so your output file is not overwritten every time it's run. File.h got a documentation update on the ast_fileexists to include the return call. Watch out for the placea.c placev.c code, it's updates have not been tested yet. Just a few parenthesis to make it compile nicer on newer gcc versions with all the -W flags set.
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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 22:31:07 jaf
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* Initial revision
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* */
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/* Revision 1.5 1996/03/19 20:41:55 jaf */
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/* Added some conditions satisfied by the output values in EWIN. */
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/* Revision 1.4 1996/03/19 20:24:17 jaf */
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/* Added some conditions satisfied by the output values in AWIN. */
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/* Revision 1.3 1996/03/18 21:40:04 jaf */
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/* Just added a few comments about which array indices of the arguments */
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/* are used, and mentioning that this subroutine has no local state. */
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/* Revision 1.2 1996/03/13 16:43:09 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 14:48:31 jaf */
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/* Initial revision */
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/* *********************************************************************** */
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/* Input: */
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/* IPITCH */
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/* VOIBUF */
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/* Indices (2,AF-2), (1,AF-1), (2,AF-1), (1,AF), and (2,AF) read.*/
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/* All other indices untouched. */
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/* OBOUND */
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/* AF */
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/* VWIN */
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/* Indices (1,AF) and (2,AF) read. */
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/* All other indices untouched. */
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/* LFRAME */
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/* MAXWIN */
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/* Input/Output: */
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/* AWIN */
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/* Index (1,AF-1) read. */
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/* Indices (1,AF) and (2,AF) written, and then read. */
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/* All other indices untouched. */
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/* In all cases (except possibly one), the final values will */
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/* satisfy the condition: AWIN(2,AF)-AWIN(1,AF)+1 = MAXWIN. */
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/* In that other case, */
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/* AWIN(1,AF)=VWIN(1,AF) and AWIN(2,AF)=VWIN(2,AF). */
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/* Output: */
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/* EWIN */
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/* Indices (1,AF) and (2,AF) written. */
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/* All other indices untouched. */
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/* In all cases, the final values will satisfy the condition: */
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/* AWIN(1,AF) .LE. EWIN(1,AF) .LE. EWIN(2,AF) .LE. AWIN(2,AF) */
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/* In other words, the energy window is a sub-window of */
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/* the analysis window. */
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/* This subroutine has no local state. */
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/* Subroutine */ int placea_(integer *ipitch, integer *voibuf, integer *
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obound, integer *af, integer *vwin, integer *awin, integer *ewin,
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integer *lframe, integer *maxwin)
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{
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/* System generated locals */
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real r__1;
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/* Builtin functions */
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integer i_nint(real *);
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/* Local variables */
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logical allv, winv;
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integer i__, j, k, l, hrange;
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logical ephase;
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integer lrange;
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/* Arguments */
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/* Local variables that need not be saved */
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/* Parameter adjustments */
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ewin -= 3;
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awin -= 3;
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vwin -= 3;
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--voibuf;
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/* Function Body */
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lrange = (*af - 2) * *lframe + 1;
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hrange = *af * *lframe;
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/* Place the Analysis window based on the voicing window */
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/* placement, onsets, tentative voicing decision, and pitch. */
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/* Case 1: Sustained Voiced Speech */
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/* If the five most recent voicing decisions are */
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/* voiced, then the window is placed phase-synchronously with the */
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/* previous window, as close to the present voicing window if possible.
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*/
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/* If onsets bound the voicing window, then preference is given to */
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/* a phase-synchronous placement which does not overlap these onsets. */
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/* Case 2: Voiced Transition */
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/* If at least one voicing decision in AF is voicied, and there are no
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*/
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/* onsets, then the window is placed as in case 1. */
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/* Case 3: Unvoiced Speech or Onsets */
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/* If both voicing decisions in AF are unvoiced, or there are onsets, */
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/* then the window is placed coincident with the voicing window. */
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/* Note: During phase-synchronous placement of windows, the length */
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/* is not altered from MAXWIN, since this would defeat the purpose */
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/* of phase-synchronous placement. */
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/* Check for case 1 and case 2 */
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allv = voibuf[((*af - 2) << 1) + 2] == 1;
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allv = allv && voibuf[((*af - 1) << 1) + 1] == 1;
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allv = allv && voibuf[((*af - 1) << 1) + 2] == 1;
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allv = allv && voibuf[(*af << 1) + 1] == 1;
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allv = allv && voibuf[(*af << 1) + 2] == 1;
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winv = voibuf[(*af << 1) + 1] == 1 || voibuf[(*af << 1) + 2] == 1;
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if (allv || (winv && *obound == 0)) {
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/* APHASE: Phase synchronous window placement. */
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/* Get minimum lower index of the window. */
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i__ = (lrange + *ipitch - 1 - awin[((*af - 1) << 1) + 1]) / *ipitch;
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i__ *= *ipitch;
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i__ += awin[((*af - 1) << 1) + 1];
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/* L = the actual length of this frame's analysis window. */
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l = *maxwin;
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/* Calculate the location where a perfectly centered window would star
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t. */
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k = (vwin[(*af << 1) + 1] + vwin[(*af << 1) + 2] + 1 - l) / 2;
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/* Choose the actual location to be the pitch multiple closest to this
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. */
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r__1 = (real) (k - i__) / *ipitch;
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awin[(*af << 1) + 1] = i__ + i_nint(&r__1) * *ipitch;
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awin[(*af << 1) + 2] = awin[(*af << 1) + 1] + l - 1;
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/* If there is an onset bounding the right of the voicing window and t
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he */
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/* analysis window overlaps that, then move the analysis window backwa
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rd */
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/* to avoid this onset. */
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if (*obound >= 2 && awin[(*af << 1) + 2] > vwin[(*af << 1) + 2]) {
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awin[(*af << 1) + 1] -= *ipitch;
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awin[(*af << 1) + 2] -= *ipitch;
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}
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/* Similarly for the left of the voicing window. */
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if ((*obound == 1 || *obound == 3) && awin[(*af << 1) + 1] < vwin[(*
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af << 1) + 1]) {
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awin[(*af << 1) + 1] += *ipitch;
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awin[(*af << 1) + 2] += *ipitch;
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}
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/* If this placement puts the analysis window above HRANGE, then */
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/* move it backward an integer number of pitch periods. */
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while(awin[(*af << 1) + 2] > hrange) {
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awin[(*af << 1) + 1] -= *ipitch;
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awin[(*af << 1) + 2] -= *ipitch;
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}
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/* Similarly if the placement puts the analysis window below LRANGE.
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*/
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while(awin[(*af << 1) + 1] < lrange) {
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awin[(*af << 1) + 1] += *ipitch;
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awin[(*af << 1) + 2] += *ipitch;
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}
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/* Make Energy window be phase-synchronous. */
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ephase = TRUE_;
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/* Case 3 */
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} else {
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awin[(*af << 1) + 1] = vwin[(*af << 1) + 1];
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awin[(*af << 1) + 2] = vwin[(*af << 1) + 2];
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ephase = FALSE_;
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}
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/* RMS is computed over an integer number of pitch periods in the analysis
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*/
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/*window. When it is not placed phase-synchronously, it is placed as clos
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e*/
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/* as possible to onsets. */
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j = (awin[(*af << 1) + 2] - awin[(*af << 1) + 1] + 1) / *ipitch * *ipitch;
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if (j == 0 || ! winv) {
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ewin[(*af << 1) + 1] = vwin[(*af << 1) + 1];
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ewin[(*af << 1) + 2] = vwin[(*af << 1) + 2];
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} else if (! ephase && *obound == 2) {
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ewin[(*af << 1) + 1] = awin[(*af << 1) + 2] - j + 1;
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ewin[(*af << 1) + 2] = awin[(*af << 1) + 2];
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} else {
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ewin[(*af << 1) + 1] = awin[(*af << 1) + 1];
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ewin[(*af << 1) + 2] = awin[(*af << 1) + 1] + j - 1;
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}
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return 0;
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} /* placea_ */
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