static s3cipid_t
dict_ciphone_id(dict_t * d, const char *str)
{
if (d->mdef)
return mdef_ciphone_id(d->mdef, str);
else {
void *val;
if (hash_table_lookup(d->pht, str, &val) < 0) {
s3cipid_t id;
id = (d->n_ciphone)++;
if (id >= MAX_S3CIPID)
E_FATAL
("Too many CIphones in dictionary; increase MAX_S3CIPID\n");
d->ciphone_str[id] = (char *) ckd_salloc(str); /* Freed in dict_free() */
if (hash_table_enter(d->pht, d->ciphone_str[id], (void *)(long)id) != (void *)(long)id)
E_FATAL("hash_table_enter(local-phonetable, %s) failed\n", str);
return id;
}
else
return (s3cipid_t)(long)val;
}
}
static int32 parse_base_line (mdef_t *m, char *line, int32 lineno, s3pid_t p)
{
int32 wlen, n;
char *word;
s3cipid_t ci;
char tmp;
/* Read base phone name */
if ((wlen = nextword (line, delim, &word, &tmp)) < 0) /* Empty line */
E_FATAL("Line %d: Incomplete base phone line\n", lineno);
/* Make sure it's not a duplicate */
ci = mdef_ciphone_id (m, word);
if (IS_CIPID(ci))
E_FATAL("Line %d: Duplicate base phone: %s\n", lineno, word);
/* Add ciphone to ciphone table with id p */
ciphone_add (m, word, p);
ci = p;
/* Restore original delimiter to word */
line = word+wlen;
word[wlen] = tmp;
/* Read and skip "-" for lc, rc, wpos */
for (n = 0; n < 3; n++) {
if ((wlen = nextword (line, delim, &word, &tmp)) < 0)
E_FATAL("Line %d: Incomplete base phone line\n", lineno);
if ((wlen != 1) || (word[0] != '-'))
E_FATAL("Line %d: %s instead of '-' in base phone line\n", word, lineno);
line = word+wlen;
word[wlen] = tmp;
}
/* Read filler attribute, if present */
if ((wlen = nextword (line, delim, &word, &tmp)) < 0)
E_FATAL("Line %d: Incomplete base phone line\n", lineno);
if (strcmp (word, "filler") == 0)
m->ciphone[ci].filler = 1;
else if (strcmp (word, "n/a") == 0)
m->ciphone[ci].filler = 0;
else
E_FATAL("Line %d: Illegal attribute string: %s\n", lineno, word);
line = word+wlen;
word[wlen] = tmp;
if (triphone_add (m, ci, BAD_CIPID, BAD_CIPID, WORD_POSN_UNDEFINED, p) < 0)
E_FATAL("Line %d: Duplicate/Bad triphone\n", lineno);
/* Parse remainder of line: transition matrix and state->senone mappings */
parse_tmat_senmap (m, line, lineno, p);
return 0;
}
static void
parse_base_line(mdef_t * m, const char *line, s3pid_t p)
{
int32 wlen, n;
char word[1024];
const char *lp;
s3cipid_t ci;
lp = line;
/* Read base phone name */
if (sscanf(lp, "%s%n", word, &wlen) != 1)
E_FATAL("Missing base phone name: %s\n", line);
lp += wlen;
/* Make sure it's not a duplicate */
ci = mdef_ciphone_id(m, word);
if (IS_S3CIPID(ci))
E_FATAL("Duplicate base phone: %s\n", line);
/* Add ciphone to ciphone table with id p */
ciphone_add(m, word, p);
ci = (s3cipid_t) p;
/* Read and skip "-" for lc, rc, wpos */
for (n = 0; n < 3; n++) {
if ((sscanf(lp, "%s%n", word, &wlen) != 1)
|| (strcmp(word, "-") != 0))
E_FATAL("Bad context info for base phone: %s\n", line);
lp += wlen;
}
/* Read filler attribute, if present */
if (sscanf(lp, "%s%n", word, &wlen) != 1)
E_FATAL("Missing filler atribute field: %s\n", line);
lp += wlen;
if (strcmp(word, "filler") == 0)
m->ciphone[(int) ci].filler = 1;
else if (strcmp(word, "n/a") == 0)
m->ciphone[(int) ci].filler = 0;
else
E_FATAL("Bad filler attribute field: %s\n", line);
triphone_add(m, ci, BAD_S3CIPID, BAD_S3CIPID, WORD_POSN_UNDEFINED, p);
/* Parse remainder of line: transition matrix and state->senone mappings */
parse_tmat_senmap(m, line, lp - line, p);
}
static s3cipid_t dict_ciphone_id (dict_t *d, char *str)
{
int32 id;
if (d->mdef)
return mdef_ciphone_id (d->mdef, str);
else {
if (hash_lookup (d->pht, str, &id) < 0) {
id = (d->n_ciphone)++;
if (id >= MAX_CIPID)
E_FATAL("Too many CIphones in dictionary; increase MAX_CIPID\n");
d->ciphone_str[id] = (char *) ckd_salloc(str);
if (hash_enter (d->pht, d->ciphone_str[id], id) != id)
E_FATAL("hash_enter(local-phonetable, %s) failed\n", str);
}
return id;
}
}
/*
* Initialize phones (ci and triphones) and state->senone mappings from .mdef file.
*/
mdef_t *
mdef_init(char *mdeffile, int32 breport)
{
FILE *fp;
int32 n_ci, n_tri, n_map, n;
__BIGSTACKVARIABLE__ char tag[1024], buf[1024];
uint16 **senmap;
int p;
int32 s, ci, cd;
mdef_t *m;
if (!mdeffile)
E_FATAL("No mdef-file\n");
if (breport)
E_INFO("Reading model definition: %s\n", mdeffile);
m = (mdef_t *) ckd_calloc(1, sizeof(mdef_t)); /* freed in mdef_free */
if ((fp = fopen(mdeffile, "r")) == NULL)
E_FATAL_SYSTEM("Failed to open mdef file '%s' for reading", mdeffile);
if (noncomment_line(buf, sizeof(buf), fp) < 0)
E_FATAL("Empty file: %s\n", mdeffile);
if (strncmp(buf, "BMDF", 4) == 0 || strncmp(buf, "FDMB", 4) == 0) {
E_INFO
("Found byte-order mark %.4s, assuming this is a binary mdef file\n",
buf);
fclose(fp);
ckd_free(m);
return NULL;
}
if (strncmp(buf, MODEL_DEF_VERSION, strlen(MODEL_DEF_VERSION)) != 0)
E_FATAL("Version error: Expecing %s, but read %s\n",
MODEL_DEF_VERSION, buf);
/* Read #base phones, #triphones, #senone mappings defined in header */
n_ci = -1;
n_tri = -1;
n_map = -1;
m->n_ci_sen = -1;
m->n_sen = -1;
m->n_tmat = -1;
do {
if (noncomment_line(buf, sizeof(buf), fp) < 0)
E_FATAL("Incomplete header\n");
if ((sscanf(buf, "%d %s", &n, tag) != 2) || (n < 0))
E_FATAL("Error in header: %s\n", buf);
if (strcmp(tag, "n_base") == 0)
n_ci = n;
else if (strcmp(tag, "n_tri") == 0)
n_tri = n;
else if (strcmp(tag, "n_state_map") == 0)
n_map = n;
else if (strcmp(tag, "n_tied_ci_state") == 0)
m->n_ci_sen = n;
else if (strcmp(tag, "n_tied_state") == 0)
m->n_sen = n;
else if (strcmp(tag, "n_tied_tmat") == 0)
m->n_tmat = n;
else
E_FATAL("Unknown header line: %s\n", buf);
} while ((n_ci < 0) || (n_tri < 0) || (n_map < 0) ||
(m->n_ci_sen < 0) || (m->n_sen < 0) || (m->n_tmat < 0));
if ((n_ci == 0) || (m->n_ci_sen == 0) || (m->n_tmat == 0)
|| (m->n_ci_sen > m->n_sen))
E_FATAL("%s: Error in header\n", mdeffile);
/* Check typesize limits */
if (n_ci >= MAX_INT16)
E_FATAL("%s: #CI phones (%d) exceeds limit (%d)\n", mdeffile, n_ci,
MAX_INT16);
if (n_ci + n_tri >= MAX_INT32) /* Comparison is always false... */
E_FATAL("%s: #Phones (%d) exceeds limit (%d)\n", mdeffile,
n_ci + n_tri, MAX_INT32);
if (m->n_sen >= MAX_INT16)
E_FATAL("%s: #senones (%d) exceeds limit (%d)\n", mdeffile,
m->n_sen, MAX_INT16);
if (m->n_tmat >= MAX_INT32) /* Comparison is always false... */
E_FATAL("%s: #tmats (%d) exceeds limit (%d)\n", mdeffile,
m->n_tmat, MAX_INT32);
m->n_emit_state = (n_map / (n_ci + n_tri)) - 1;
if ((m->n_emit_state + 1) * (n_ci + n_tri) != n_map)
E_FATAL
("Header error: n_state_map not a multiple of n_ci*n_tri\n");
/* Initialize ciphone info */
m->n_ciphone = n_ci;
m->ciphone_ht = hash_table_new(n_ci, HASH_CASE_YES); /* With case-insensitive string names *//* freed in mdef_free */
m->ciphone = (ciphone_t *) ckd_calloc(n_ci, sizeof(ciphone_t)); /* freed in mdef_free */
/* Initialize phones info (ciphones + triphones) */
m->n_phone = n_ci + n_tri;
m->phone = (phone_t *) ckd_calloc(m->n_phone, sizeof(phone_t)); /* freed in mdef_free */
/* Allocate space for state->senone map for each phone */
senmap = ckd_calloc_2d(m->n_phone, m->n_emit_state, sizeof(**senmap)); /* freed in mdef_free */
m->sseq = senmap; /* TEMPORARY; until it is compressed into just the unique ones */
/* Allocate initial space for <ci,lc,rc,wpos> -> pid mapping */
m->wpos_ci_lclist = (ph_lc_t ***) ckd_calloc_2d(N_WORD_POSN, m->n_ciphone, sizeof(ph_lc_t *)); /* freed in mdef_free */
/*
* Read base phones and triphones. They'll simply be assigned a running sequence
* number as their "phone-id". If the phone-id < n_ci, it's a ciphone.
*/
/* Read base phones */
for (p = 0; p < n_ci; p++) {
if (noncomment_line(buf, sizeof(buf), fp) < 0)
E_FATAL("Premature EOF reading CIphone %d\n", p);
parse_base_line(m, buf, p);
}
m->sil = mdef_ciphone_id(m, S3_SILENCE_CIPHONE);
/* Read triphones, if any */
for (; p < m->n_phone; p++) {
if (noncomment_line(buf, sizeof(buf), fp) < 0)
E_FATAL("Premature EOF reading phone %d\n", p);
parse_tri_line(m, buf, p);
}
if (noncomment_line(buf, sizeof(buf), fp) >= 0)
E_ERROR("Non-empty file beyond expected #phones (%d)\n",
m->n_phone);
/* Build CD senones to CI senones map */
if (m->n_ciphone * m->n_emit_state != m->n_ci_sen)
E_FATAL
("#CI-senones(%d) != #CI-phone(%d) x #emitting-states(%d)\n",
m->n_ci_sen, m->n_ciphone, m->n_emit_state);
m->cd2cisen = (int16 *) ckd_calloc(m->n_sen, sizeof(*m->cd2cisen)); /* freed in mdef_free */
m->sen2cimap = (int16 *) ckd_calloc(m->n_sen, sizeof(*m->sen2cimap)); /* freed in mdef_free */
for (s = 0; s < m->n_sen; s++)
m->sen2cimap[s] = -1;
for (s = 0; s < m->n_ci_sen; s++) { /* CI senones */
m->cd2cisen[s] = s;
m->sen2cimap[s] = s / m->n_emit_state;
}
for (p = n_ci; p < m->n_phone; p++) { /* CD senones */
for (s = 0; s < m->n_emit_state; s++) {
cd = m->sseq[p][s];
ci = m->sseq[m->phone[p].ci][s];
m->cd2cisen[cd] = ci;
m->sen2cimap[cd] = m->phone[p].ci;
}
}
sseq_compress(m);
fclose(fp);
return m;
}
static void
parse_tri_line(mdef_t * m, char *line, int p)
{
int32 wlen;
__BIGSTACKVARIABLE__ char word[1024], *lp;
int ci, lc, rc;
word_posn_t wpos = WORD_POSN_BEGIN;
lp = line;
/* Read base phone name */
if (sscanf(lp, "%s%n", word, &wlen) != 1)
E_FATAL("Missing base phone name: %s\n", line);
lp += wlen;
ci = mdef_ciphone_id(m, word);
if (ci < 0)
E_FATAL("Unknown base phone: %s\n", line);
/* Read lc */
if (sscanf(lp, "%s%n", word, &wlen) != 1)
E_FATAL("Missing left context: %s\n", line);
lp += wlen;
lc = mdef_ciphone_id(m, word);
if (lc < 0)
E_FATAL("Unknown left context: %s\n", line);
/* Read rc */
if (sscanf(lp, "%s%n", word, &wlen) != 1)
E_FATAL("Missing right context: %s\n", line);
lp += wlen;
rc = mdef_ciphone_id(m, word);
if (rc < 0)
E_FATAL("Unknown right context: %s\n", line);
/* Read tripone word-position within word */
if ((sscanf(lp, "%s%n", word, &wlen) != 1) || (word[1] != '\0'))
E_FATAL("Missing or bad word-position spec: %s\n", line);
lp += wlen;
switch (word[0]) {
case 'b':
wpos = WORD_POSN_BEGIN;
break;
case 'e':
wpos = WORD_POSN_END;
break;
case 's':
wpos = WORD_POSN_SINGLE;
break;
case 'i':
wpos = WORD_POSN_INTERNAL;
break;
default:
E_FATAL("Bad word-position spec: %s\n", line);
}
/* Read filler attribute, if present. Must match base phone attribute */
if (sscanf(lp, "%s%n", word, &wlen) != 1)
E_FATAL("Missing filler attribute field: %s\n", line);
lp += wlen;
if (((strcmp(word, "filler") == 0) && (m->ciphone[(int) ci].filler)) ||
((strcmp(word, "n/a") == 0) && (!m->ciphone[(int) ci].filler))) {
/* Everything is fine */
}
else
E_FATAL("Bad filler attribute field: %s\n", line);
triphone_add(m, ci, lc, rc, wpos, p);
/* Parse remainder of line: transition matrix and state->senone mappings */
parse_tmat_senmap(m, line, lp - line, p);
}
/*
* Initialize phones (ci and triphones) and state->senone mappings from .mdef file.
*/
mdef_t *mdef_init (char *mdeffile)
{
FILE *fp;
int32 n_ci, n_tri, n_map, n;
char tag[1024], buf[1024];
int32 n_read;
s3senid_t *senmap;
s3pid_t p;
int32 s, ci, cd;
E_INFO("Reading model definition: %s\n", mdeffile);
assert (! mdef);
mdef = (mdef_t *) ckd_calloc (1, sizeof(mdef_t));
if ((fp = fopen(mdeffile, "r")) == NULL)
E_FATAL("fopen(%s,r) failed\n", mdeffile);
n_read = 0;
if (noncomment_line(buf, sizeof(buf), &n_read, fp) < 0)
E_FATAL("Empty file: %s\n", mdeffile);
if (strncmp(buf, MODEL_DEF_VERSION, strlen(MODEL_DEF_VERSION)) != 0)
E_FATAL("Line %d: Version error. Expecing %s, but read %s\n",
n_read, MODEL_DEF_VERSION, buf);
/* Read #base phones, #triphones, #senone mappings defined in header */
n_ci = -1;
n_tri = -1;
n_map = -1;
mdef->n_ci_sen = -1;
mdef->n_sen = -1;
mdef->n_tmat = -1;
do {
if (noncomment_line(buf, sizeof(buf), &n_read, fp) < 0)
E_FATAL("Incomplete header\n");
if ((sscanf(buf, "%d %s", &n, tag) != 2) || (n < 0))
E_FATAL("Line %d: Error in reading header\n", n_read);
if (strcmp(tag, "n_base") == 0)
n_ci = n;
else if (strcmp(tag, "n_tri") == 0)
n_tri = n;
else if (strcmp(tag, "n_state_map") == 0)
n_map = n;
else if (strcmp(tag, "n_tied_ci_state") == 0)
mdef->n_ci_sen = n;
else if (strcmp(tag, "n_tied_state") == 0)
mdef->n_sen = n;
else if (strcmp(tag, "n_tied_tmat") == 0)
mdef->n_tmat = n;
else
E_FATAL("Line %d: Unknown tag: %s\n", n_read, tag);
} while ((n_ci < 0) || (n_tri < 0) || (n_map < 0) ||
(mdef->n_ci_sen < 0) || (mdef->n_sen < 0) || (mdef->n_tmat < 0));
if ((n_ci == 0) || (mdef->n_ci_sen == 0) || (mdef->n_tmat == 0) ||
(mdef->n_ci_sen > mdef->n_sen))
E_FATAL("Incorrect information in header\n");
mdef->n_emit_state = (n_map / (n_ci+n_tri)) - 1;
if ((mdef->n_emit_state+1) * (n_ci+n_tri) != n_map)
E_FATAL("Header error: n_state_map not a multiple of n_ci*n_tri\n");
/* Initialize ciphone info */
max_ciphone = n_ci;
mdef->ciphone_ht = hash_new ("ciphone", n_ci);
mdef->ciphone = (ciphone_t *) ckd_calloc (n_ci, sizeof(ciphone_t));
mdef->n_ciphone = 0;
/* Initialize phones info (ciphones + triphones) */
max_phone = n_ci + n_tri;
mdef->phone = (phone_t *) ckd_calloc (max_phone, sizeof(phone_t));
mdef->n_phone = 0;
/* Allocate space for state->senone map for each phone */
senmap = (s3senid_t *) ckd_calloc (max_phone * mdef->n_emit_state, sizeof(s3senid_t));
for (p = 0; p < max_phone; p++)
mdef->phone[p].state = senmap + (p * mdef->n_emit_state);
/* Allocate initial space for <ci,lc,rc,wpos> -> pid mapping */
mdef->wpos_ci_lclist = (ph_lc_t ***) ckd_calloc_2d (N_WORD_POSN,
max_ciphone,
sizeof(ph_lc_t *));
/*
* Read base phones and triphones. They'll simply be assigned a running sequence
* number as their "phone-id". If the phone-id < n_ci, it's a ciphone.
*/
/* Read base phones */
for (p = 0; p < n_ci; p++) {
if (noncomment_line(buf, sizeof(buf), &n_read, fp) < 0)
E_FATAL("Premature EOF(%s)\n", mdeffile);
parse_base_line (mdef, buf, n_read, p);
}
mdef->sil = mdef_ciphone_id (mdef, SILENCE_CIPHONE);
/* Read triphones, if any */
for (; p < max_phone; p++) {
if (noncomment_line(buf, sizeof(buf), &n_read, fp) < 0)
E_FATAL("Premature EOF(%s)\n", mdeffile);
parse_tri_line (mdef, buf, n_read, p);
}
if (noncomment_line(buf, sizeof(buf), &n_read, fp) >= 0)
E_ERROR("Line %d: File continues beyond expected size\n", n_read);
/* Build CD senones to CI senones map */
mdef->cd2cisen = (s3senid_t *) ckd_calloc (mdef->n_sen, sizeof(s3senid_t));
for (s = 0; s < mdef->n_ci_sen; s++) /* CI senones */
mdef->cd2cisen[s] = (s3senid_t) s;
for (p = n_ci; p < max_phone; p++) { /* CD senones */
for (s = 0; s < mdef->n_emit_state; s++) {
cd = mdef->phone[p].state[s];
ci = mdef->phone[mdef->phone[p].ci].state[s];
mdef->cd2cisen[cd] = (s3senid_t) ci;
}
}
E_INFO("%d CI-phones, %d CD-phones, %d emitting states/phone, %d sen, %d CI-sen\n",
mdef->n_ciphone, mdef->n_phone - mdef->n_ciphone, mdef->n_emit_state,
mdef->n_sen, mdef->n_ci_sen);
fclose (fp);
return mdef;
}
static int32 parse_tri_line (mdef_t *m, char *line, int32 lineno, s3pid_t p)
{
int32 wlen;
char *word;
s3cipid_t ci, lc, rc;
word_posn_t wpos;
char tmp;
/* Read base phone name */
if ((wlen = nextword (line, delim, &word, &tmp)) < 0) /* Empty line */
E_FATAL("Line %d: Incomplete triphone line\n", lineno);
ci = mdef_ciphone_id (m, word);
if (NOT_CIPID(ci))
E_FATAL("Line %d: Unknown base phone in triphone: %s\n", lineno, word);
line = word+wlen;
word[wlen] = tmp;
/* Read lc */
if ((wlen = nextword (line, delim, &word, &tmp)) < 0)
E_FATAL("Line %d: Incomplete triphone line\n", lineno);
lc = mdef_ciphone_id (m, word);
if (NOT_CIPID(lc))
E_FATAL("Line %d: Unknown left context in triphone: %s\n", lineno, word);
line = word+wlen;
word[wlen] = tmp;
/* Read rc */
if ((wlen = nextword (line, delim, &word, &tmp)) < 0)
E_FATAL("Line %d: Incomplete triphone line\n", lineno);
rc = mdef_ciphone_id (m, word);
if (NOT_CIPID(rc))
E_FATAL("Line %d: Unknown left context in triphone: %s\n", lineno, word);
line = word+wlen;
word[wlen] = tmp;
/* Read tripone word-position within word */
if (((wlen = nextword (line, delim, &word, &tmp)) < 0) ||
(word[1] != '\0'))
E_FATAL("Line %d: Missing or bad triphone word-position spec\n", lineno);
switch (word[0]) {
case 'b': wpos = WORD_POSN_BEGIN; break;
case 'e': wpos = WORD_POSN_END; break;
case 's': wpos = WORD_POSN_SINGLE; break;
case 'i': wpos = WORD_POSN_INTERNAL; break;
default: E_FATAL("Line %d: Bad word-position spec: %s\n", lineno, word);
}
line = word+wlen;
word[wlen] = tmp;
/* Read filler attribute, if present. Must match base phone attribute */
if ((wlen = nextword (line, delim, &word, &tmp)) < 0)
E_FATAL("Line %d: Incomplete base phone line\n", lineno);
if (((strcmp (word, "filler") == 0) && (m->ciphone[ci].filler)) ||
((strcmp (word, "n/a") == 0) && (! m->ciphone[ci].filler))) {
} else
E_FATAL("Line %d: Bad attribute string: %s\n", lineno, word);
line = word+wlen;
word[wlen] = tmp;
if (triphone_add (m, ci, lc, rc, wpos, p) < 0)
E_FATAL("Line %d: Duplicate/Bad triphone\n", lineno);
/* Parse remainder of line: transition matrix and state->senone mappings */
parse_tmat_senmap (m, line, lineno, p);
return 0;
}
static wseg_t *line2wseg (char *line, s3wid_t *ref,
s3cipid_t *ap, int8 *ap_err, int32 aplen, char *id)
{
char word[1024], uttid[1024], *lp;
int32 i, k, n_hypci, n_refwd, n_refci, pronlen;
s3cipid_t ci;
typedef enum {CORR=0, REFERR=1, HYPERR=2} state_t;
state_t state;
static wseg_t *wseg = NULL;
if (! wseg)
wseg = (wseg_t *) ckd_calloc (MAX_UTT_LEN, sizeof(wseg_t));
lp = line;
n_hypci = n_refci = pronlen = 0;
n_refwd = -1;
uttid[0] = '\0';
state = CORR;
while (sscanf (lp, "%s%n", word, &k) == 1) {
lp += k;
if (is_uttid (word, uttid))
break;
if (strcmp (word, "[[") == 0) {
if (state != CORR)
E_FATAL("%s: Illegal [[\n", id);
state = REFERR;
if (n_refci < pronlen)
wseg[n_refwd].err = 1;
} else if (strcmp (word, "]]") == 0) {
if (state != HYPERR)
E_FATAL("%s: Illegal ]]\n", id);
state = CORR;
} else if (strcmp (word, "=>") == 0) {
if (state != REFERR)
E_FATAL("%s: Illegal =>\n", id);
state = HYPERR;
} else {
ci = mdef_ciphone_id (mdef, word);
if (NOT_CIPID(ci))
E_FATAL("%s: Unknown CIphone %s\n", id, word);
if (state != HYPERR) { /* Check if matches next pron in ref word */
if (n_refci >= pronlen) {
assert (n_refci == pronlen);
n_refwd++;
pronlen = dict->word[ref[n_refwd]].pronlen;
assert (pronlen > 0);
wseg[n_refwd].s = (state == CORR) ? n_hypci : -1;
wseg[n_refwd].e = -1;
wseg[n_refwd].err = 0;
n_refci = 0;
}
if (NOT_WID(ref[n_refwd]))
E_FATAL("%s: Premature end of ref wid\n", id);
if (dict->word[ref[n_refwd]].ciphone[n_refci] != ci)
E_FATAL("%s: CIphone mismatch at word %d, ciphone %d\n",
id, n_refwd, n_refci);
n_refci++;
if ((n_refci == pronlen) && (state == CORR))
wseg[n_refwd].e = n_hypci;
if (state != CORR)
wseg[n_refwd].err = 1;
}
if (state != REFERR) {
if (n_hypci >= aplen)
E_FATAL("%s: Too many CIphones: >%d\n", id, aplen);
ap[n_hypci] = ci;
ap_err[n_hypci] = (state == CORR) ? 0 : 1;
n_hypci++;
}
}
}
assert (n_refci == pronlen);
n_refwd++;
assert (NOT_WID(ref[n_refwd]));
wseg[n_refwd].s = wseg[n_refwd].e = n_hypci;
wseg[n_refwd].err = 0;
ap[n_hypci] = BAD_CIPID;
ap_err[n_hypci] = 1;
if (strcmp (uttid, id) != 0)
E_FATAL("Uttid mismatch: %s expected, %s found\n", id, uttid);
#if 0
for (i = 0; IS_WID(ref[i]); i++) {
printf ("%s: %4d %4d %d %s\n", id, wseg[i].s, wseg[i].e, wseg[i].err,
dict_wordstr (dict, ref[i]));
}
#endif
return wseg;
}
/*
* Initialize phones (ci and triphones) and state->senone mappings from .mdef file.
*/
mdef_t *
mdef_init(const char *mdeffile, int32 breport)
{
FILE *fp;
int32 n_ci, n_tri, n_map, n;
char tag[1024], buf[1024];
s3senid_t **senmap;
/* s3senid_t *tempsenmap; */
s3pid_t p;
int32 s, ci, cd;
mdef_t *m;
if (!mdeffile)
E_FATAL("No mdef-file\n");
if (breport)
E_INFO("Reading model definition: %s\n", mdeffile);
m = (mdef_t *) ckd_calloc(1, sizeof(mdef_t)); /* freed in mdef_free */
if ((fp = fopen(mdeffile, "r")) == NULL)
E_FATAL_SYSTEM("fopen(%s,r) failed\n", mdeffile);
if (noncomment_line(buf, sizeof(buf), fp) < 0)
E_FATAL("Empty file: %s\n", mdeffile);
if (strncmp(buf, MODEL_DEF_VERSION, strlen(MODEL_DEF_VERSION)) != 0)
E_FATAL("Version error: Expecing %s, but read %s\n",
MODEL_DEF_VERSION, buf);
/* Read #base phones, #triphones, #senone mappings defined in header */
n_ci = -1;
n_tri = -1;
n_map = -1;
m->n_ci_sen = -1;
m->n_sen = -1;
m->n_tmat = -1;
do {
if (noncomment_line(buf, sizeof(buf), fp) < 0)
E_FATAL("Incomplete header\n");
if ((sscanf(buf, "%d %s", &n, tag) != 2) || (n < 0))
E_FATAL("Error in header: %s\n", buf);
if (strcmp(tag, "n_base") == 0)
n_ci = n;
else if (strcmp(tag, "n_tri") == 0)
n_tri = n;
else if (strcmp(tag, "n_state_map") == 0)
n_map = n;
else if (strcmp(tag, "n_tied_ci_state") == 0)
m->n_ci_sen = n;
else if (strcmp(tag, "n_tied_state") == 0)
m->n_sen = n;
else if (strcmp(tag, "n_tied_tmat") == 0)
m->n_tmat = n;
else
E_FATAL("Unknown header line: %s\n", buf);
} while ((n_ci < 0) || (n_tri < 0) || (n_map < 0) ||
(m->n_ci_sen < 0) || (m->n_sen < 0) || (m->n_tmat < 0));
if ((n_ci == 0) || (m->n_ci_sen == 0) || (m->n_tmat == 0)
|| (m->n_ci_sen > m->n_sen))
E_FATAL("%s: Error in header\n", mdeffile);
/* Check typesize limits */
if (n_ci >= MAX_S3CIPID)
E_FATAL("%s: #CI phones (%d) exceeds limit (%d)\n", mdeffile, n_ci,
MAX_S3CIPID);
if (n_ci + n_tri >= MAX_S3PID)
E_FATAL("%s: #Phones (%d) exceeds limit (%d)\n", mdeffile,
n_ci + n_tri, MAX_S3PID);
if (m->n_sen >= MAX_S3SENID)
E_FATAL("%s: #senones (%d) exceeds limit (%d)\n", mdeffile,
m->n_sen, MAX_S3SENID);
if (m->n_tmat >= MAX_S3TMATID)
E_FATAL("%s: #tmats (%d) exceeds limit (%d)\n", mdeffile,
m->n_tmat, MAX_S3TMATID);
m->n_emit_state = (n_map / (n_ci + n_tri)) - 1;
if ((m->n_emit_state + 1) * (n_ci + n_tri) != n_map)
E_FATAL
("Header error: n_state_map not a multiple of n_ci*n_tri\n");
/* Initialize ciphone info */
m->n_ciphone = n_ci;
m->ciphone_ht = hash_table_new(n_ci, HASH_CASE_YES); /* With case-insensitive string names *//* freed in mdef_free */
m->ciphone = (ciphone_t *) ckd_calloc(n_ci, sizeof(ciphone_t)); /* freed in mdef_free */
/* Initialize phones info (ciphones + triphones) */
m->n_phone = n_ci + n_tri;
m->phone = (phone_t *) ckd_calloc(m->n_phone, sizeof(phone_t)); /* freed in mdef_free */
/* Allocate space for state->senone map for each phone */
senmap = (s3senid_t **) ckd_calloc_2d(m->n_phone, m->n_emit_state, sizeof(s3senid_t)); /* freed in mdef_free */
m->sseq = senmap; /* TEMPORARY; until it is compressed into just the unique ones */
/**CODE DUPLICATION!*****************************************************************************************************/
/* Flat decoder-specific */
/* Allocate space for state->senone map for each phone */
/* ARCHAN 20040820, this sacrifice readability and may cause pointer
problems in future. However, this is a less evil than
duplication of code. This is trick point all the state mapping
to the global mapping and avoid duplicated memory.
*/
/* S3 xwdpid_compress will compress the below list phone list.
*/
/* ARCHAN, this part should not be used when one of the recognizer is used. */
m->st2senmap =
(s3senid_t *) ckd_calloc(m->n_phone * m->n_emit_state,
sizeof(s3senid_t));
for (p = 0; p < m->n_phone; p++)
m->phone[p].state = m->st2senmap + (p * m->n_emit_state);
/******************************************************************************************************/
/* Allocate initial space for <ci,lc,rc,wpos> -> pid mapping */
m->wpos_ci_lclist = (ph_lc_t ***) ckd_calloc_2d(N_WORD_POSN, m->n_ciphone, sizeof(ph_lc_t *)); /* freed in mdef_free */
/*
* Read base phones and triphones. They'll simply be assigned a running sequence
* number as their "phone-id". If the phone-id < n_ci, it's a ciphone.
*/
/* Read base phones */
for (p = 0; p < n_ci; p++) {
if (noncomment_line(buf, sizeof(buf), fp) < 0)
E_FATAL("Premature EOF reading CIphone %d\n", p);
parse_base_line(m, buf, p);
}
m->sil = mdef_ciphone_id(m, S3_SILENCE_CIPHONE);
/* Read triphones, if any */
for (; p < m->n_phone; p++) {
if (noncomment_line(buf, sizeof(buf), fp) < 0)
E_FATAL("Premature EOF reading phone %d\n", p);
parse_tri_line(m, buf, p);
}
if (noncomment_line(buf, sizeof(buf), fp) >= 0)
E_ERROR("Non-empty file beyond expected #phones (%d)\n",
m->n_phone);
/* Build CD senones to CI senones map */
if (m->n_ciphone * m->n_emit_state != m->n_ci_sen)
E_FATAL
("#CI-senones(%d) != #CI-phone(%d) x #emitting-states(%d)\n",
m->n_ci_sen, m->n_ciphone, m->n_emit_state);
m->cd2cisen = (s3senid_t *) ckd_calloc(m->n_sen, sizeof(s3senid_t)); /* freed in mdef_free */
m->sen2cimap = (s3cipid_t *) ckd_calloc(m->n_sen, sizeof(s3cipid_t)); /* freed in mdef_free */
for (s = 0; s < m->n_sen; s++)
m->sen2cimap[s] = BAD_S3CIPID;
for (s = 0; s < m->n_ci_sen; s++) { /* CI senones */
m->cd2cisen[s] = (s3senid_t) s;
m->sen2cimap[s] = s / m->n_emit_state;
}
for (p = n_ci; p < m->n_phone; p++) { /* CD senones */
for (s = 0; s < m->n_emit_state; s++) {
cd = m->sseq[p][s];
ci = m->sseq[(int) m->phone[p].ci][s];
m->cd2cisen[cd] = (s3senid_t) ci;
m->sen2cimap[cd] = m->phone[p].ci;
}
}
sseq_compress(m);
fclose(fp);
return m;
}