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genmidi.c
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/*
* abc2midi - program to convert abc files to MIDI files.
* Copyright (C) 1999 James Allwright
* e-mail: [email protected]
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*
*/
/* genmidi.c
* This is the code for generating MIDI output from the stored music held
* in arrays feature, num, denom, pitch. The top-level routine is
* writetrack(). This file is part of abc2midi.
*
* 14th January 1999
* James Allwright
*
*/
/* for Microsoft Visual C++ Ver 6 and higher */
#ifdef _MSC_VER
#define ANSILIBS
#define snprintf _snprintf
#define strncasecmp strnicmp
#endif
#include "abc.h"
#include "parseabc.h"
#include "queues.h"
#include "genmidi.h"
#include "midifile.h"
#include <stdio.h>
#ifdef ANSILIBS
#include <string.h>
#include <ctype.h>
#endif
/* define USE_INDEX if your C libraries have index() instead of strchr() */
#ifdef USE_INDEX
#define strchr index
#endif
#include <stdlib.h>
#define MAX(A, B) ((A) > (B) ? (A) : (B))
void single_note_tuning_change(int midikey, float midipitch);
void addfract(int *xnum, int *xdenom, int a, int b);
/* [SS] 2011-08-17 */
void fdursum_at_segment(int segposnum, int segposden, int *val_num, int *val_den);
void articulated_stress_factors (int n, int *vel);
void write_event(int event_type, int channel, char data[], int n);
float ranfrac ()
{
return rand()/(float) RAND_MAX;
}
void setbeat();
void parse_drummap(char **s); /* [SS] 2017-12-10 no more static */
/* global variables grouped roughly by function */
extern int lineno; /* source line being parsed */
extern int lineposition; /* character position in line */
extern char** atext;
/* Named guitar chords */
extern int chordnotes[MAXCHORDNAMES][10]; /* [SS] 2012-01-29 */
extern int chordlen[MAXCHORDNAMES];
/* general purpose storage structure */
/* these 6 arrays are used to hold the tune data */
extern int *pitch, *num, *denom;
extern int *bentpitch;
extern int *decotype; /* [SS] 2012-11-25 */
extern int *charloc; /* [SS] 2014-12-25 */
extern featuretype *feature;
extern int *stressvelocity; /* [SS] 2011-08-17 */
extern int notes;
extern int barflymode; /* [SS] 2011-08-24 */
extern int stressmodel; /* [SS] 2011-08-26 */
extern int programbase; /* [SS] 2017-06-02 */
extern int verbose;
extern int quiet;
extern int sf, mi;
extern int silent; /* [SS] 2014-10-16 */
extern int retuning,bend; /* [SS] 2012-04-01 */
int drumbars;
int gchordbars;
/* Part handling */
extern struct vstring part;
int parts, partno, partlabel;
int part_start[26], part_count[26];
long introlen, lastlen, partlen[26];
int partrepno;
/* int additive; not supported any more [SS] 2004-10-08*/
int err_num, err_denom;
extern int voicesused;
/* Tempo handling (Q: field) */
extern long tempo;
extern int time_num, time_denom; /* time sig. for the tune */
extern int mtime_num, mtime_denom; /* current time sig. when generating MIDI */
int div_factor;
int division = DIV;
long delta_time; /* time since last MIDI event */
long delta_time_track0; /* [SS] 2010-06-27 */
long tracklen, tracklen1;
long barloc[1024]; /* [SS] 2019-03-20 */
/* output file generation */
extern int ntracks;
/* bar length checking */
int bar_num, bar_denom, barno, barsize;
int b_num, b_denom;
extern int barchecking;
/* time signature after header processed */
extern int header_time_num,header_time_denom;
/* generating MIDI output */
int beat;
int loudnote, mednote, softnote;
int beataccents;
int velocity_increment = 10; /* for crescendo and decrescendo */
char beatstring[100];
int nbeats;
int channel, program;
#define MAXCHANS 16
int channel_in_use[MAXCHANS+3];
int current_pitchbend[MAXCHANS];
int current_program[MAXCHANS];
int transpose;
int global_transpose=0;
int chordchannels[10]; /* for handling in voice chords and microtones */
int nchordchannels = 0;
extern int no_more_free_channels; /* [SS] 2015-03-23 from store.c */
/* [SS] 2015-09-07 */
int single_velocity_inc;
int single_velocity;
/* karaoke handling */
extern int karaoke, wcount;
int kspace;
char* wordlineptr;
extern char** words;
int thismline, thiswline, windex, thiswfeature;
int wordlineplace;
int nowordline;
int waitforbar;
int wlineno, syllcount;
int lyricsyllables, musicsyllables;
/* the following are booleans to select features in current track */
int wordson, noteson, gchordson, temposon, drumson, droneon;
int hyphenstate; /* [Bas Schoutsen] 2010-04-08 */
/* Generating accompaniment */
int gchords, g_started;
int basepitch, inversion, chordnum;
int gchordnotes[6],gchordnotes_size;
struct notetype {
int base;
int chan;
int vel;
};
struct notetype gchord, fun;
int g_num, g_denom;
int g_next;
char gchord_seq[40];
int gchord_len[40];
int g_ptr;
int tracknumber; /* [SS] 2014-11-17 */
/* [SS] 2015-05-21 */
struct dronestruct {
int chan; /* MIDI channel assigned to drone */
int event; /* stores time in MIDI pulses when last drone event occurred*/
int prog; /* MIDI program (instrument) to use for drone */
int pitch1;/* MIDI pitch of first drone tone */
int vel1; /* MIDI velocity (loudness) of first drone tone */
int pitch2;/* MIDI pitch of second drone tone */
int vel2; /* MIDI velocity (loudnress) of second drone tone */
} drone = {1, 0, 70, 45, 80, 33, 80}; /* bassoon a# */
/* Generating drum track */
int drum_num, drum_denom;
char drum_seq[40];
int drum_len[40];
int drum_velocity[40], drum_program[40];
int drum_ptr, drum_on;
int notecount=0; /* number of notes in a chord [ABC..] */
int notedelay=10; /* time interval in MIDI ticks between */
/* start of notes in chord */
int chordattack=0;
int staticnotedelay=10; /* introduced to handle !arpeggio! */
int staticchordattack=0;
int totalnotedelay=0; /* total time delay introduced */
int trim=1; /* to add a silent gap to note */
int trim_num = 1;
int trim_denom = 5;
/* [SS] 2015-06-16 */
int expand=0; /* overlap note past next note */
int expand_num = 0;
int expand_denom = 5;
/* channel 10 drum handling */
int drum_map[256];
int gchord_error = 0; /* [SS] 2010-07-11 */
extern struct trackstruct trackdescriptor[40]; /* trackstruct defined in genmidi.h*/
/* [SS] 2011-07-04 */
int beatmodel = 0; /* flag selecting standard or Phil's model */
/* [SS] 2012-12-12 */
int bendvelocity = 100;
int bendacceleration = 300;
/* [SS] 2014-09-09 */
int bendstate = 8192; /* also linked with queues.c */
/* [SS] 2015-09-10 2015-10-03 */
int benddata[256];
int bendnvals;
int bendtype = 1;
/* [SS] 2015-07-24 2015-10-03 */
#define MAXLAYERS 3
int controldata[MAXLAYERS][256];
int controlnvals[MAXLAYERS];
int controldefaults[128]; /* [SS] 2015-08-10 */
int nlayers = 0; /* [SS] 2015-08-20 */
int controlcombo = 0; /* [SS] 2015-08-20 */
/* for handling stress models */
int nseg; /* number of segments */
int ngain[32]; /* gain factor for each segment */
float maxdur; /* maximum duration */
int segnum,segden; /* segment width computed from M: and L: parameters*/
float fdur[32]; /* duration modifier for each segment */
float fdursum[32]; /* for mapping segment address into a position */
char *featname[] = {
"SINGLE_BAR", "DOUBLE_BAR","DOTTED_BAR", "BAR_REP", "REP_BAR",
"PLAY_ON_REP", "REP1", "REP2", "BAR1",
"REP_BAR2", "DOUBLE_REP", "THICK_THIN", "THIN_THICK",
"PART", "TEMPO", "TIME", "KEY",
"REST", "TUPLE", "NOTE", "NONOTE",
"OLDTIE", "TEXT", "SLUR_ON", "SLUR_OFF",
"TIE", "CLOSE_TIE", "TITLE", "CHANNEL",
"TRANSPOSE", "RTRANSPOSE", "GTRANSPOSE", "GRACEON",
"GRACEOFF", "SETGRACE", "SETC", "SETTRIM","EXPAND", "GCHORD",
"GCHORDON", "GCHORDOFF", "VOICE", "CHORDON",
"CHORDOFF", "CHORDOFFEX", "DRUMON", "DRUMOFF",
"DRONEON", "DRONEOFF", "SLUR_TIE", "TNOTE",
"LT", "GT", "DYNAMIC", "LINENUM",
"MUSICLINE", "MUSICSTOP", "WORDLINE", "WORDSTOP", "WORDEXTEND",
"INSTRUCTION", "NOBEAM", "CHORDNOTE", "CLEF",
"PRINTLINE", "NEWPAGE", "LEFT_TEXT", "CENTRE_TEXT",
"VSKIP", "COPYRIGHT", "COMPOSER", "ARPEGGIO",
"SPLITVOICE", "META", "PEDAL_ON", "PEDAL_OFF", "EFFECT"
};
void reduce(a, b)
/* elimate common factors in fraction a/b */
int *a, *b;
{
int sign;
int t, n, m;
if (*a < 0) {
sign = -1;
*a = -*a;
} else {
sign = 1;
};
/* find HCF using Euclid's algorithm */
if (*a > *b) {
n = *a;
m = *b;
} else {
n = *b;
m = *a;
};
while (m != 0) {
t = n % m;
n = m;
m = t;
};
*a = (*a/n)*sign;
*b = *b/n;
}
int gtfract(anum,adenom, bnum,bdenom)
/* compare two fractions anum/adenom > bnum/bdenom */
/* returns (a > b) */
int anum,adenom,bnum,bdenom;
{
if ((anum*bdenom) > (bnum*adenom)) {
return(1);
} else {
return(0);
};
}
void addunits(a, b)
/* add a/b to the count of units in the bar */
int a, b;
{
bar_num = bar_num*(b*b_denom) + (a*b_num)*bar_denom;
bar_denom = bar_denom * (b*b_denom);
reduce(&bar_num, &bar_denom);
/*printf("position = %d/%d\n",bar_num,bar_denom);*/
}
void configure_gchord()
/* creates a list of notes to played as chord for
* a specific guitar chord. Most of the code figures out
* how to order the notes when inversions are encountered.
*/
{
int j;
int inchord, note;
gchordnotes_size = 0;
if (chordnum < 0) return; /* [SS] 2022-03-20 */
inchord = 0;
if (inversion != -1) {
/* try to match inversion with basepitch+chordnotes.. */
for (j=0; j<chordlen[chordnum]; j++) {
if ((basepitch + chordnotes[chordnum][j]) % 12 == inversion % 12) {
inchord = j;
};
};
/* do not add strange note to chord [SS] 2008-09-24 */
/* if ((inchord == 0) && (inversion > basepitch)) {
** inversion = inversion - 12;
** gchordnotes[gchordnotes_size] = inversion+gchord.base;
** gchordnotes_size++;
** };
***/
};
for (j=0; j<chordlen[chordnum]; j++) {
note = basepitch + chordnotes[chordnum][j];
if (j < inchord)
note += 12;
gchordnotes[gchordnotes_size] = gchord.base+note;
gchordnotes_size++;
};
}
void set_gchords(s)
char* s;
/* set up a string which indicates how to generate accompaniment from */
/* guitar chords (i.e. "A", "G" in abc). */
/* called from dodeferred(), startfile() and setbeat() */
{
int seq_len;
char* p;
int j;
p = s;
j = 0;
seq_len = 0;
/* [SS] 2021-12-10 */
while ((strchr("zcfbghijkGHIJKx", *p) != NULL) && (j <39)) {
if (*p == 0) break;
gchord_seq[j] = *p;
p = p + 1;
if ((*p >= '0') && (*p <= '9')) {
gchord_len[j] = readnump(&p);
} else {
gchord_len[j] = 1;
};
seq_len = seq_len + gchord_len[j];
j = j + 1;
};
if (seq_len == 0) {
event_error("Bad gchord");
gchord_seq[0] = 'z';
gchord_len[0] = 1;
seq_len = 1;
};
gchord_seq[j] = '\0';
if (j == 39) {
event_error("Sequence string too long");
};
/* work out unit delay in 1/4 notes*/
g_num = mtime_num * 4*gchordbars;
g_denom = mtime_denom * seq_len;
reduce(&g_num, &g_denom);
/* printf("%s %d %d\n",s,g_num,g_denom); */
}
void set_drums(s)
char* s;
/* set up a string which indicates drum pattern */
/* called from dodeferred() */
{
int seq_len, count, drum_hits;
char* p;
int i, j, place;
p = s;
count = 0;
drum_hits = 0;
seq_len = 0;
while (((*p == 'z') || (*p == 'd')) && (count<39)) {
if (*p == 'd') {
drum_hits = drum_hits + 1;
};
drum_seq[count] = *p;
p = p + 1;
if ((*p >= '0') && (*p <= '9')) {
drum_len[count] = readnump(&p);
} else {
drum_len[count] = 1;
};
seq_len = seq_len + drum_len[count];
count = count + 1;
};
drum_seq[count] = '\0';
if (seq_len == 0) {
event_error("Bad drum sequence");
drum_seq[0] = 'z';
drum_len[0] = 1;
seq_len = 1;
};
if (count == 39) {
event_error("Drum sequence string too long");
};
/* look for program and velocity specifiers */
for (i = 0; i<count; i++) {
drum_program[i] = 35;
drum_velocity[i] = 80;
};
skipspace(&p);
i = 0;
place = 0;
while (isdigit(*p)) {
j = readnump(&p);
if (i < drum_hits) {
while (drum_seq[place] != 'd') {
place = place + 1;
};
if (j > 127) {
event_error("Drum program must be in the range 0-127");
} else {
drum_program[place] = j;
};
place = place + 1;
} else {
if (i < 2*count) {
if (i == drum_hits) {
place = 0;
};
while (drum_seq[place] != 'd') {
place = place + 1;
};
if ((j < 1) || (j > 127)) {
event_error("Drum velocity must be in the range 1-127");
} else {
drum_velocity[place] = j;
};
place = place + 1;
};
};
i = i + 1;
skipspace(&p);
};
if (i > 2*drum_hits) {
event_error("Too many data items for drum sequence");
};
/* work out unit delay in 1/4 notes*/
drum_num = mtime_num * 4*drumbars;
drum_denom = mtime_denom * seq_len;
reduce(&drum_num, &drum_denom);
}
static void checkbar(pass)
/* check to see we have the right number of notes in the bar */
int pass;
{
char msg[80];
if (barno >= 0 && barno < 1024 && pass == 1) barloc[barno] = bar_num; /*[SS] 2021-04-26 */
if (barchecking) {
/* only generate these errors once */
if (noteson && (partrepno == 0)) {
/* allow zero length bars for typesetting purposes */
if ((bar_num-barsize*(bar_denom) != 0) &&
(bar_num != 0) && ((pass == 2) || (barno != 0))) {
/* [SS] 2014-11-17 added tracknumber */
sprintf(msg, "Track %d Bar %d has %d",tracknumber, barno, bar_num);
if (bar_denom != 1) {
sprintf(msg+strlen(msg), "/%d", bar_denom);
};
sprintf(msg+strlen(msg), " time units while the time signature has %d", barsize);
if (pass == 2) {
strcat(msg, " in repeat");
};
if (quiet == -1) event_warning(msg);
};
};
};
if (bar_num > 0) {
barno = barno + 1;
};
bar_num = 0;
bar_denom = 1;
/* zero place in gchord sequence */
if (gchordson) {
if (gchordbars < 2) { /* [SS] 2018-06-23 */
g_ptr = 0;
}
addtoQ(0, g_denom, -1, g_ptr ,0, 0); /* [SS] 2018-06-23 */
};
if (drumson) {
if (drumbars < 2) { /* [SS] 2018-06-23 */
drum_ptr = 0;
addtoQ(0, drum_denom, -1, drum_ptr,0, 0);
}
addtoQ(0, drum_denom, -1, drum_ptr,0, 0); /* [SS] 2018-06-23 */
};
}
static void softcheckbar(pass)
/* allows repeats to be in mid-bar */
int pass;
{
if (barchecking) {
if ((bar_num-barsize*(bar_denom) >= 0) || (barno <= 0)) {
checkbar(pass);
};
};
}
static void save_state(vec, a, b, c, d, e, f)
/* save status when we go into a repeat */
int vec[6];
int a, b, c, d, e, f;
{
vec[0] = a;
vec[1] = b;
vec[2] = c;
vec[3] = d;
vec[4] = e;
vec[5] = f; /* [SS] 2013-11-02 */
}
static void restore_state(vec, a, b, c, d, e, f)
/* restore status when we loop back to do second repeat */
int vec[6];
int *a, *b, *c, *d, *e, *f;
{
*a = vec[0];
*b = vec[1];
*c = vec[2];
*d = vec[3];
*e = vec[4];
*f = vec[5]; /* [SS] 2013-11-02 */
}
/* 2015-03-16 [SS] changed channels[] to channel_in_use[] */
static int findchannel()
/* work out next available channel */
{
int j;
j = 0;
while ((j<MAXCHANS) && (channel_in_use[j] != 0)) {
j = j + 1;
};
if (j >= MAXCHANS && !no_more_free_channels) {
event_error("All 16 MIDI channels used up.");
no_more_free_channels = 1;
j = 0;
};
channel_in_use[j] = 1;
return (j);
}
static int findpart(j)
int j;
/* find out where next part starts and update partno */
{
int place;
place = j;
partno = partno + 1;
if (partno < parts) {
partlabel = (int)part.st[partno] - (int)'A';
}
while ((partno < parts) &&
(part_start[partlabel] == -1)) {
if (!silent) event_error("Part not defined");
partno = partno + 1;
if (partno < parts) {
partlabel = (int)part.st[partno] - (int)'A';
}
};
if (partno >= parts) {
place = notes;
} else {
partrepno = part_count[partlabel];
part_count[partlabel]++;
place = part_start[partlabel];
};
if (verbose) {
if (partno < parts) {
printf("Doing part %c number %d of %d\n", part.st[partno], partno, parts);
};
};
return(place);
}
static int partbreak(xtrack, voice, place)
/* come to part label in note data - check part length, then advance to */
/* next part if there was a P: field in the header */
int xtrack, voice, place;
{
int newplace;
newplace = place;
if (parts != -1) {
/* go to next part label */
newplace = findpart(newplace); /* [SS] 2023.01.20 */
};
partlabel = (int) pitch[newplace] - (int)'A';
return(newplace);
}
static int findvoice(initplace, voice, xtrack)
/* find where next occurrence of correct voice is */
int initplace;
int voice, xtrack;
{
int foundvoice;
int j;
foundvoice = 0;
j = initplace;
while ((j < notes) && (foundvoice == 0)) {
if (feature[j] == LINENUM) { /* [SS] 2019-03-14 */
lineno = pitch[j];
}
if (feature[j] == PART) {
j = partbreak(xtrack, voice, j);
if (voice == 1) {
foundvoice = 1;
} else {
j = j + 1;
};
} else {
if ((feature[j] == VOICE) && (pitch[j] == voice)) {
foundvoice = 1;
} else {
j = j + 1;
};
};
};
return(j);
}
static void text_data(s)
/* write text event to MIDI file */
char* s;
{
mf_write_meta_event(delta_time, text_event, s, strlen(s));
tracklen = tracklen + delta_time;
delta_time = 0L;
}
static void karaokestarttrack (track)
int track;
/* header information for karaoke track based on w: fields */
{
int j;
int done;
char atitle[200];
/*
* Print Karaoke file headers in track 0.
* @KMIDI KARAOKE FILE - Karaoke midi file marker)
*/
if (track == 0)
{
text_data("@KMIDI KARAOKE FILE");
}
/*
* Name track 2 "Words" for the lyrics track.
* @LENGL - language
* Print @T information.
* 1st @T line signifies title.
* 2nd @T line signifies author.
* 3rd @T line signifies copyright.
*/
if (track == 2)
{
mf_write_meta_event(0L, sequence_name, "Words", 5);
kspace = 0;
text_data("@LENGL");
strcpy(atitle, "@T");
}
else
/*
* Write name of song as sequence name in track 0 and as track 1 name.
* Print general information about the file using @I marker.
* Add to tracks 0 and 1 for various Karaoke (and midi) players to find.
*/
strcpy(atitle, "@I");
j = 0;
done = 3;
while ((j < notes) && (done > 0))
{
if (feature[j] == TITLE) {
if (track != 2)
mf_write_meta_event(0L, sequence_name, atext[pitch[j]], strlen (atext[pitch[j]]));
strncpy(atitle+2, atext[pitch[j]], 197); /* [KG] 2022-01-13 stack overflow bug */
text_data(atitle);
done--;
}
if (feature[j] == COMPOSER) {
strncpy(atitle+2, atext[pitch[j]], 197); /* [KG] 2022-01-13 stack overflow bug */
text_data(atitle);
done--;
}
if (feature[j] == COPYRIGHT) {
strcpy(atitle+2, atext[pitch[j]]); /* [KG] 2022-01-13 stack overflow bug */
text_data(atitle);
done--;
}
j = j+1;
}
}
/* [JA] 2022.06.14 */
/* scan ahead to see if a WORDSTOP is cancelled by a subsequent WORDEXTEND */
static int check_wordextend(int startplace)
{
int place;
int result;
int this_feature;
place = startplace;
result = 0;
while ((result == 0) && (place < notes) ) {
this_feature = feature[place];
if (this_feature == WORDEXTEND) {
return 1;
}
/* we should stop searching if we find any of these */
if ((this_feature == WORDLINE) || (this_feature == PART) ||
(this_feature == VOICE) || (this_feature == MUSICLINE)) {
return 0;
}
place = place + 1;
}
return 0;
}
static int findwline(startline)
int startline;
/* Find next line of lyrics at or after startline. */
{
int place;
int done;
int newwordline;
int inwline, extending;
int versecount, target;
/* printf("findwline called with %d\n", startline); */
done = 0;
inwline = 0;
nowordline = 0;
newwordline = -1;
target = partrepno;
if (startline == thismline) {
versecount = 0;
extending = 0;
} else {
versecount = target;
extending = 1;
};
if (thismline == -1) {
event_error("First lyrics line must come after first music line");
} else {
place = startline + 1;
/* search for corresponding word line */
while ((place < notes) && (!done)) {
switch (feature[place]) {
case WORDLINE:
inwline = 1;
/* wait for words for this pass */
if (versecount == target) {
thiswfeature = place;
newwordline = place;
windex = pitch[place];
wordlineplace = 0;
done = 1;
};
break;
case WORDSTOP:
/* [JA] 2022-06-14 */
/* WORDSTOP marks the end of a w: field (i.e. no continuation).
* if it is followed by WORDEXTEND (indicating w: + or +:) then
* we over-ride it.
*/
if (!check_wordextend(place)) {
if (inwline) {
versecount = versecount + 1;
};
inwline = 0;
/* stop if we are part-way through a lyric set */
if (extending) {
done = 1;
};
}
break;
case WORDEXTEND:
/* don't need to do anything with WORDEXTEND here as we search
* foward for it when we find WORDSTOP
* [JA] 2022-06-14
*/
break;
case PART:
done = 1;
break;
case VOICE:
done = 1;
break;
case MUSICLINE:
done = 1;
break;
default:
break;
};
place = place + 1;
if (done && (newwordline == -1) && (versecount > 0) && (!extending)) {
target = partrepno % versecount ;
versecount = 0;
place = startline+1;
done = 0;
inwline = 0;
};
};
if (newwordline == -1) {
/* remember that we couldn't find lyrics */
nowordline = 1;
if (lyricsyllables == 0) {
event_warning("Line of music without lyrics");
};
};
};
return(newwordline);
}
static int getword(place, w)
/* picks up next syllable out of w: field.
* It strips out all the control codes ~ - _ * in the
* words and sends each syllable out to the Karaoke track.
* Using the place variable, it loops through each character
* in the word until it encounters a space or next control
* code. The syllstatus variable controls the loop. After,
* the syllable is sent, it then positions the place variable
* to the next syllable or control code.
* inword --> grabbing the characters in the syllable and
* putting them into syllable for output.
* postword --> finished grabbing all characters
* foundnext--> ready to repeat process for next syllable
* empty --> between syllables.
*
* The variable i keeps count of the number of characters
* inserted into the syllable[] char for output to the
* karaoke track. The kspace variables signals that a
* space was encountered.
*/
int* place;
int w;
{
char syllable[200];
unsigned char c; /* [BY] 2012-10-03 */
int i;
int syllcount;
enum {empty, inword, postword, foundnext, failed} syllstatus;
/* [BY] 2012-10-03 Big5 chinese character support */
int isBig5; /* boolean check for first byte of Big-5: 0xA140 ~ 0xF9FE */
/*printf("GETWORD: w = %d\n",c);*/
i = 0;
syllcount = 0;
if (w >= wcount) {
syllable[i] = '\0';
return ('\0');
};
if (*place == 0) {
if ((w % 2) == 0) {
syllable[i] = '/';
} else {
syllable[i] = '\\';
};
i = i + 1;
};
if (kspace) {
syllable[i] = ' ';
i = i + 1;
};
syllstatus = empty;
c = *(words[w]+(*place));
isBig5 = 0; /* [BI] 2012-10-03 */
while ((syllstatus != postword) && (syllstatus != failed) && (i<199)) {
/* [KG] 2022-01-13 stack overflow bug fix */
syllable[i] = c;
/* printf("syllstatus = %d c = %c i = %d place = %d row= %d \n",syllstatus,c,i,*place,w); */
if (isBig5) { /* [BI] 2012-10-03 */
i = i + 1;
*place = *place + 1;
isBig5 = 0;
} else {
switch(c) {
case '\0':
if (syllstatus == empty) {
syllstatus = failed;
} else {
syllstatus = postword;
kspace = 1;
};
break;
case '~':
syllable[i] = ' ';
syllstatus = inword;
*place = *place + 1;
i = i + 1;
hyphenstate = 0; /* [Bas Schoutsen] 2010-04-08 */
break;
case '\\':
if (*(words[w]+(*place+1)) == '-') {
syllable[i] = '-';
syllstatus = inword;
*place = *place + 2;
i = i + 1;
} else {
/* treat like plain text */
*place = *place + 1;
if (i>0) {
syllstatus = inword;
i = i + 1;
};
};
break;
case ' ':
if (syllstatus == empty) {
*place = *place + 1;