int
dict_write(dict_t *dict, char const *filename, char const *format)
{
FILE *fh;
int i;
if ((fh = fopen(filename, "w")) == NULL) {
E_ERROR_SYSTEM("Failed to open %s", filename);
return -1;
}
for (i = 0; i < dict->n_word; ++i) {
char *phones;
int j, phlen;
if (!dict_real_word(dict, i))
continue;
for (phlen = j = 0; j < dict_pronlen(dict, i); ++j)
phlen += strlen(dict_ciphone_str(dict, i, j)) + 1;
phones = ckd_calloc(1, phlen);
for (j = 0; j < dict_pronlen(dict, i); ++j) {
strcat(phones, dict_ciphone_str(dict, i, j));
if (j != dict_pronlen(dict, i) - 1)
strcat(phones, " ");
}
fprintf(fh, "%-30s %s\n", dict_wordstr(dict, i), phones);
ckd_free(phones);
}
fclose(fh);
return 0;
}
char *
ps_lookup_word(ps_decoder_t *ps, const char *word)
{
s3wid_t wid;
int32 phlen, j;
char *phones;
dict_t *dict = ps->dict;
wid = dict_wordid(dict, word);
if (wid == BAD_S3WID)
return NULL;
for (phlen = j = 0; j < dict_pronlen(dict, wid); ++j)
phlen += strlen(dict_ciphone_str(dict, wid, j)) + 1;
phones = ckd_calloc(1, phlen);
for (j = 0; j < dict_pronlen(dict, wid); ++j) {
strcat(phones, dict_ciphone_str(dict, wid, j));
if (j != dict_pronlen(dict, wid) - 1)
strcat(phones, " ");
}
return phones;
}
main (int32 argc, char *argv[])
{
dict_t **d;
int32 i, k, p, wid;
char line[16384], *wp[1024];
if (argc < 2) {
E_INFO("Usage: %s dictfile [dictfile ...] < vocabfile\n", argv[0]);
exit(0);
}
d = (dict_t **) ckd_calloc (argc-1, sizeof(dict_t *));
for (i = 1; i < argc; i++)
d[i-1] = dict_init (NULL, argv[i], NULL, 0);
while (fgets (line, sizeof(line), stdin) != NULL) {
if ((k = str2words (line, wp, 1024)) < 0)
E_FATAL("Line too long: %s\n", line);
if (k > 2)
E_FATAL("Vocab entry contains too many words\n");
if (k == 0)
continue;
if (k == 1)
wp[1] = wp[0];
/* Look up word in each dictionary until found */
k = 0;
for (i = 0; (i < argc-1) && (k == 0); i++) {
wid = dict_wordid (d[i], wp[1]);
if (NOT_WID(wid))
continue;
for (wid = dict_basewid(d[i], wid);
IS_WID(wid);
wid = dict_nextalt(d[i], wid)) {
k++;
if (k == 1)
printf ("%s\t", wp[0]);
else
printf ("%s(%d)\t", wp[0], k);
for (p = 0; p < dict_pronlen(d[i], wid); p++)
printf (" %s", dict_ciphone_str (d[i], wid, p));
printf ("\n");
}
}
if (k == 0)
E_ERROR("No pronunciation for: '%s'\n", wp[0]);
}
}
void
dict2pid_dump(FILE * fp, dict2pid_t * d2p)
{
int32 w, p, pronlen;
int32 i, j, b, l, r;
bin_mdef_t *mdef = d2p->mdef;
dict_t *dict = d2p->dict;
fprintf(fp, "# INTERNAL (wd comssid ssid ssid ... ssid comssid)\n");
for (w = 0; w < dict_size(dict); w++) {
fprintf(fp, "%30s ", dict_wordstr(dict, w));
pronlen = dict_pronlen(dict, w);
for (p = 0; p < pronlen; p++)
fprintf(fp, " %5d", dict2pid_internal(d2p, w, p));
fprintf(fp, "\n");
}
fprintf(fp, "#\n");
fprintf(fp, "# LDIPH_LC (b r l ssid)\n");
for (b = 0; b < bin_mdef_n_ciphone(mdef); b++) {
for (r = 0; r < bin_mdef_n_ciphone(mdef); r++) {
for (l = 0; l < bin_mdef_n_ciphone(mdef); l++) {
if (IS_S3SSID(d2p->ldiph_lc[b][r][l]))
fprintf(fp, "%6s %6s %6s %5d\n", bin_mdef_ciphone_str(mdef, (s3cipid_t) b), bin_mdef_ciphone_str(mdef, (s3cipid_t) r), bin_mdef_ciphone_str(mdef, (s3cipid_t) l), d2p->ldiph_lc[b][r][l]); /* RAH, ldiph_lc is returning an int32, %d expects an int16 */
}
}
}
fprintf(fp, "#\n");
fprintf(fp, "# SSEQ %d (senid senid ...)\n", mdef->n_sseq);
for (i = 0; i < mdef->n_sseq; i++) {
fprintf(fp, "%5d ", i);
for (j = 0; j < bin_mdef_n_emit_state(mdef); j++)
fprintf(fp, " %5d", mdef->sseq[i][j]);
fprintf(fp, "\n");
}
fprintf(fp, "#\n");
fprintf(fp, "# END\n");
fflush(fp);
}
s3ssid_t
dict2pid_internal(dict2pid_t *d2p,
int32 wid,
int pos)
{
int b, l, r, p;
dict_t *dict = d2p->dict;
bin_mdef_t *mdef = d2p->mdef;
if (pos == 0 || pos == dict_pronlen(dict, wid))
return BAD_S3SSID;
b = dict_pron(dict, wid, pos);
l = dict_pron(dict, wid, pos - 1);
r = dict_pron(dict, wid, pos + 1);
p = bin_mdef_phone_id_nearest(mdef, (s3cipid_t) b,
(s3cipid_t) l, (s3cipid_t) r,
WORD_POSN_INTERNAL);
return bin_mdef_pid2ssid(mdef, p);
}
int
dict2pid_add_word(dict2pid_t *d2p,
int32 wid)
{
bin_mdef_t *mdef = d2p->mdef;
dict_t *d = d2p->dict;
if (dict_pronlen(d, wid) > 1) {
s3cipid_t l;
/* Make sure we have left and right context diphones for this
* word. */
if (d2p->ldiph_lc[dict_first_phone(d, wid)][dict_second_phone(d, wid)][0]
== BAD_S3SSID) {
E_INFO("Filling in left-context diphones for %s(?,%s)\n",
bin_mdef_ciphone_str(mdef, dict_first_phone(d, wid)),
bin_mdef_ciphone_str(mdef, dict_second_phone(d, wid)));
for (l = 0; l < bin_mdef_n_ciphone(mdef); l++) {
s3ssid_t p
= bin_mdef_phone_id_nearest(mdef,
dict_first_phone(d, wid), l,
dict_second_phone(d, wid),
WORD_POSN_BEGIN);
d2p->ldiph_lc[dict_first_phone(d, wid)][dict_second_phone(d, wid)][l]
= bin_mdef_pid2ssid(mdef, p);
}
}
if (d2p->rssid[dict_last_phone(d, wid)][dict_second_last_phone(d, wid)].n_ssid
== 0) {
s3ssid_t *rmap;
s3ssid_t *tmpssid;
s3cipid_t *tmpcimap;
s3cipid_t r;
E_INFO("Filling in right-context diphones for %s(%s,?)\n",
bin_mdef_ciphone_str(mdef, dict_last_phone(d, wid)),
bin_mdef_ciphone_str(mdef, dict_second_last_phone(d, wid)));
rmap = ckd_calloc(bin_mdef_n_ciphone(mdef), sizeof(*rmap));
for (r = 0; r < bin_mdef_n_ciphone(mdef); r++) {
s3ssid_t p
= bin_mdef_phone_id_nearest(mdef,
dict_last_phone(d, wid),
dict_second_last_phone(d, wid), r,
WORD_POSN_END);
rmap[r] = bin_mdef_pid2ssid(mdef, p);
}
tmpssid = ckd_calloc(bin_mdef_n_ciphone(mdef), sizeof(*tmpssid));
tmpcimap = ckd_calloc(bin_mdef_n_ciphone(mdef), sizeof(*tmpcimap));
compress_table(rmap, tmpssid, tmpcimap, bin_mdef_n_ciphone(mdef));
for (r = 0; r < mdef->n_ciphone && tmpssid[r] != BAD_S3SSID; r++)
;
d2p->rssid[dict_last_phone(d, wid)][dict_second_last_phone(d, wid)].ssid = tmpssid;
d2p->rssid[dict_last_phone(d, wid)][dict_second_last_phone(d, wid)].cimap = tmpcimap;
d2p->rssid[dict_last_phone(d, wid)][dict_second_last_phone(d, wid)].n_ssid = r;
ckd_free(rmap);
}
}
else {
/* Make sure we have a left-right context triphone entry for
* this word. */
E_INFO("Filling in context triphones for %s(?,?)\n",
bin_mdef_ciphone_str(mdef, dict_first_phone(d, wid)));
if (d2p->lrdiph_rc[dict_first_phone(d, wid)][0][0] == BAD_S3SSID) {
populate_lrdiph(d2p, NULL, dict_first_phone(d, wid));
}
}
return 0;
}
/*
* Add the word emitted by the given transition (fsglink) to the given lextree
* (rooted at root), and return the new lextree root. (There may actually be
* several root nodes, maintained in a linked list via fsg_pnode_t.sibling.
* "root" is the head of this list.)
* lclist, rclist: sets of left and right context phones for this link.
* alloc_head: head of a linear list of all allocated pnodes for the parent
* FSG state, kept elsewhere and updated by this routine.
*/
static fsg_pnode_t *
psubtree_add_trans(fsg_lextree_t *lextree,
fsg_pnode_t * root,
fsg_glist_linklist_t **curglist,
fsg_link_t * fsglink,
int16 *lclist, int16 *rclist,
fsg_pnode_t ** alloc_head)
{
int32 silcipid; /* Silence CI phone ID */
int32 pronlen; /* Pronunciation length */
int32 wid; /* FSG (not dictionary!!) word ID */
int32 dictwid; /* Dictionary (not FSG!!) word ID */
int32 ssid; /* Senone Sequence ID */
gnode_t *gn;
fsg_pnode_t *pnode, *pred, *head;
int32 n_ci, p, lc, rc;
glist_t lc_pnodelist; /* Temp pnodes list for different left contexts */
glist_t rc_pnodelist; /* Temp pnodes list for different right contexts */
int32 i, j;
silcipid = bin_mdef_silphone(lextree->mdef);
n_ci = bin_mdef_n_ciphone(lextree->mdef);
wid = fsg_link_wid(fsglink);
assert(wid >= 0); /* Cannot be a null transition */
dictwid = dict_wordid(lextree->dict,
fsg_model_word_str(lextree->fsg, wid));
pronlen = dict_pronlen(lextree->dict, dictwid);
assert(pronlen >= 1);
assert(lclist[0] >= 0); /* At least one phonetic context provided */
assert(rclist[0] >= 0);
head = *alloc_head;
pred = NULL;
if (pronlen == 1) { /* Single-phone word */
int ci = dict_first_phone(lextree->dict, dictwid);
/* Only non-filler words are mpx */
if (dict_filler_word(lextree->dict, dictwid)) {
/*
* Left diphone ID for single-phone words already assumes SIL is right
* context; only left contexts need to be handled.
*/
lc_pnodelist = NULL;
for (i = 0; lclist[i] >= 0; i++) {
lc = lclist[i];
ssid = dict2pid_lrdiph_rc(lextree->d2p, ci, lc, silcipid);
/* Check if this ssid already allocated for some other context */
for (gn = lc_pnodelist; gn; gn = gnode_next(gn)) {
pnode = (fsg_pnode_t *) gnode_ptr(gn);
if (hmm_nonmpx_ssid(&pnode->hmm) == ssid) {
/* already allocated; share it for this context phone */
fsg_pnode_add_ctxt(pnode, lc);
break;
}
}
if (!gn) { /* ssid not already allocated */
pnode =
(fsg_pnode_t *) ckd_calloc(1, sizeof(fsg_pnode_t));
pnode->ctx = lextree->ctx;
pnode->next.fsglink = fsglink;
pnode->logs2prob =
fsg_link_logs2prob(fsglink) + lextree->wip + lextree->pip;
pnode->ci_ext = dict_first_phone(lextree->dict, dictwid);
pnode->ppos = 0;
pnode->leaf = TRUE;
pnode->sibling = root; /* All root nodes linked together */
fsg_pnode_add_ctxt(pnode, lc); /* Initially zeroed by calloc above */
pnode->alloc_next = head;
head = pnode;
root = pnode;
hmm_init(lextree->ctx, &pnode->hmm, FALSE, ssid, pnode->ci_ext);
lc_pnodelist =
glist_add_ptr(lc_pnodelist, (void *) pnode);
}
}
glist_free(lc_pnodelist);
}
else { /* Filler word; no context modelled */
ssid = bin_mdef_pid2ssid(lextree->mdef, ci); /* probably the same... */
pnode = (fsg_pnode_t *) ckd_calloc(1, sizeof(fsg_pnode_t));
pnode->ctx = lextree->ctx;
pnode->next.fsglink = fsglink;
pnode->logs2prob = fsg_link_logs2prob(fsglink) + lextree->wip + lextree->pip;
pnode->ci_ext = silcipid; /* Presents SIL as context to neighbors */
pnode->ppos = 0;
pnode->leaf = TRUE;
pnode->sibling = root;
fsg_pnode_add_all_ctxt(&(pnode->ctxt));
pnode->alloc_next = head;
head = pnode;
root = pnode;
hmm_init(lextree->ctx, &pnode->hmm, FALSE, ssid, pnode->ci_ext);
}
}
else { /* Multi-phone word */
fsg_pnode_t **ssid_pnode_map; /* Temp array of ssid->pnode mapping */
ssid_pnode_map =
(fsg_pnode_t **) ckd_calloc(n_ci, sizeof(fsg_pnode_t *));
lc_pnodelist = NULL;
rc_pnodelist = NULL;
for (p = 0; p < pronlen; p++) {
int ci = dict_pron(lextree->dict, dictwid, p);
if (p == 0) { /* Root phone, handle required left contexts */
/* Find if we already have an lc_pnodelist for the first phone of this word */
fsg_glist_linklist_t *predglist=*curglist;
fsg_glist_linklist_t *glist=*curglist;
rc = dict_pron(lextree->dict, dictwid, 1);
while (glist && glist->glist && glist->ci != ci && glist->rc != rc){
glist = glist->next;
}
if (glist && glist->ci == ci && glist->rc == rc && glist->glist) {
/* We've found a valid glist. Hook to it and move to next phoneme */
lc_pnodelist = glist->glist;
/* Set the predecessor node for the future tree first */
pred = (fsg_pnode_t *) gnode_ptr(lc_pnodelist);
continue;
}
else {
/* Two cases that can bring us here
* a. glist == NULL, i.e. end of current list. Create new entry.
* b. glist->glist == NULL, i.e. first entry into list.
*/
if (!glist) { /* Case a; reduce it to case b by allocing glist */
glist = (fsg_glist_linklist_t*) ckd_calloc(1, sizeof(fsg_glist_linklist_t));
glist->next = predglist;
*curglist = glist;
}
glist->ci = ci;
glist->rc = rc;
glist->lc = -1;
lc_pnodelist = glist->glist = NULL; /* Gets created below */
}
for (i = 0; lclist[i] >= 0; i++) {
lc = lclist[i];
ssid = dict2pid_ldiph_lc(lextree->d2p, ci, rc, lc);
/* Compression is not done by d2p, so we do it
* here. This might be slow, but it might not
* be... we'll see. */
pnode = ssid_pnode_map[0];
for (j = 0; j < n_ci && ssid_pnode_map[j] != NULL; ++j) {
pnode = ssid_pnode_map[j];
if (hmm_nonmpx_ssid(&pnode->hmm) == ssid)
break;
}
assert(j < n_ci);
if (!pnode) { /* Allocate pnode for this new ssid */
pnode =
(fsg_pnode_t *) ckd_calloc(1,
sizeof
(fsg_pnode_t));
pnode->ctx = lextree->ctx;
/* This bit is tricky! For now we'll put the prob in the final link only */
/* pnode->logs2prob = fsg_link_logs2prob(fsglink)
+ lextree->wip + lextree->pip; */
pnode->logs2prob = lextree->wip + lextree->pip;
pnode->ci_ext = dict_first_phone(lextree->dict, dictwid);
pnode->ppos = 0;
pnode->leaf = FALSE;
pnode->sibling = root; /* All root nodes linked together */
pnode->alloc_next = head;
head = pnode;
root = pnode;
hmm_init(lextree->ctx, &pnode->hmm, FALSE, ssid, pnode->ci_ext);
lc_pnodelist =
glist_add_ptr(lc_pnodelist, (void *) pnode);
ssid_pnode_map[j] = pnode;
}
fsg_pnode_add_ctxt(pnode, lc);
}
/* Put the lc_pnodelist back into glist */
glist->glist = lc_pnodelist;
/* The predecessor node for the future tree is the root */
pred = root;
}
else if (p != pronlen - 1) { /* Word internal phone */
fsg_pnode_t *pnodeyoungest;
ssid = dict2pid_internal(lextree->d2p, dictwid, p);
/* First check if we already have this ssid in our tree */
pnode = pred->next.succ;
pnodeyoungest = pnode; /* The youngest sibling */
while (pnode && (hmm_nonmpx_ssid(&pnode->hmm) != ssid || pnode->leaf)) {
pnode = pnode->sibling;
}
if (pnode && (hmm_nonmpx_ssid(&pnode->hmm) == ssid && !pnode->leaf)) {
/* Found the ssid; go to next phoneme */
pred = pnode;
continue;
}
/* pnode not found, allocate it */
pnode = (fsg_pnode_t *) ckd_calloc(1, sizeof(fsg_pnode_t));
pnode->ctx = lextree->ctx;
pnode->logs2prob = lextree->pip;
pnode->ci_ext = dict_pron(lextree->dict, dictwid, p);
pnode->ppos = p;
pnode->leaf = FALSE;
pnode->sibling = pnodeyoungest; /* May be NULL */
if (p == 1) { /* Predecessor = set of root nodes for left ctxts */
for (gn = lc_pnodelist; gn; gn = gnode_next(gn)) {
pred = (fsg_pnode_t *) gnode_ptr(gn);
pred->next.succ = pnode;
}
}
else { /* Predecessor = word internal node */
pred->next.succ = pnode;
}
pnode->alloc_next = head;
head = pnode;
hmm_init(lextree->ctx, &pnode->hmm, FALSE, ssid, pnode->ci_ext);
pred = pnode;
}
else { /* Leaf phone, handle required right contexts */
/* Note, leaf phones are not part of the tree */
xwdssid_t *rssid;
memset((void *) ssid_pnode_map, 0,
n_ci * sizeof(fsg_pnode_t *));
lc = dict_pron(lextree->dict, dictwid, p-1);
rssid = dict2pid_rssid(lextree->d2p, ci, lc);
for (i = 0; rclist[i] >= 0; i++) {
rc = rclist[i];
j = rssid->cimap[rc];
ssid = rssid->ssid[j];
pnode = ssid_pnode_map[j];
if (!pnode) { /* Allocate pnode for this new ssid */
pnode =
(fsg_pnode_t *) ckd_calloc(1,
sizeof
(fsg_pnode_t));
pnode->ctx = lextree->ctx;
/* We are plugging the word prob here. Ugly */
/* pnode->logs2prob = lextree->pip; */
pnode->logs2prob = fsg_link_logs2prob(fsglink) + lextree->pip;
pnode->ci_ext = dict_pron(lextree->dict, dictwid, p);
pnode->ppos = p;
pnode->leaf = TRUE;
pnode->sibling = rc_pnodelist ?
(fsg_pnode_t *) gnode_ptr(rc_pnodelist) : NULL;
pnode->next.fsglink = fsglink;
pnode->alloc_next = head;
head = pnode;
hmm_init(lextree->ctx, &pnode->hmm, FALSE, ssid, pnode->ci_ext);
rc_pnodelist =
glist_add_ptr(rc_pnodelist, (void *) pnode);
ssid_pnode_map[j] = pnode;
}
else {
assert(hmm_nonmpx_ssid(&pnode->hmm) == ssid);
}
fsg_pnode_add_ctxt(pnode, rc);
}
if (p == 1) { /* Predecessor = set of root nodes for left ctxts */
for (gn = lc_pnodelist; gn; gn = gnode_next(gn)) {
pred = (fsg_pnode_t *) gnode_ptr(gn);
if (!pred->next.succ)
pred->next.succ = (fsg_pnode_t *) gnode_ptr(rc_pnodelist);
else {
/* Link to the end of the sibling chain */
fsg_pnode_t *succ = pred->next.succ;
while (succ->sibling) succ = succ->sibling;
succ->sibling = (fsg_pnode_t*) gnode_ptr(rc_pnodelist);
/* Since all entries of lc_pnodelist point
to the same array, sufficient to update it once */
break;
}
}
}
else { /* Predecessor = word internal node */
if (!pred->next.succ)
pred->next.succ = (fsg_pnode_t *) gnode_ptr(rc_pnodelist);
else {
/* Link to the end of the sibling chain */
fsg_pnode_t *succ = pred->next.succ;
while (succ->sibling) succ = succ->sibling;
succ->sibling = (fsg_pnode_t *) gnode_ptr(rc_pnodelist);
}
}
}
}
ckd_free((void *) ssid_pnode_map);
/* glist_free(lc_pnodelist); Nope; this gets freed outside */
glist_free(rc_pnodelist);
}
*alloc_head = head;
return root;
}
/**
* Compute the left and right context CIphone sets for each state.
*/
static void
fsg_lextree_lc_rc(fsg_lextree_t *lextree)
{
int32 s, i, j;
int32 n_ci;
fsg_model_t *fsg;
int32 silcipid;
int32 len;
silcipid = bin_mdef_silphone(lextree->mdef);
assert(silcipid >= 0);
n_ci = bin_mdef_n_ciphone(lextree->mdef);
fsg = lextree->fsg;
/*
* lextree->lc[s] = set of left context CIphones for state s. Similarly, rc[s]
* for right context CIphones.
*/
lextree->lc = ckd_calloc_2d(fsg->n_state, n_ci + 1, sizeof(**lextree->lc));
lextree->rc = ckd_calloc_2d(fsg->n_state, n_ci + 1, sizeof(**lextree->rc));
E_INFO("Allocated %d bytes (%d KiB) for left and right context phones\n",
fsg->n_state * (n_ci + 1) * 2,
fsg->n_state * (n_ci + 1) * 2 / 1024);
for (s = 0; s < fsg->n_state; s++) {
fsg_arciter_t *itor;
for (itor = fsg_model_arcs(fsg, s); itor; itor = fsg_arciter_next(itor)) {
fsg_link_t *l = fsg_arciter_get(itor);
int32 dictwid; /**< Dictionary (not FSG) word ID!! */
if (fsg_link_wid(l) >= 0) {
dictwid = dict_wordid(lextree->dict,
fsg_model_word_str(lextree->fsg, l->wid));
/*
* Add the first CIphone of l->wid to the rclist of state s, and
* the last CIphone to lclist of state d.
* (Filler phones are a pain to deal with. There is no direct
* marking of a filler phone; but only filler words are supposed to
* use such phones, so we use that fact. HACK!! FRAGILE!!)
*/
if (fsg_model_is_filler(fsg, fsg_link_wid(l))) {
/* Filler phone; use silence phone as context */
lextree->rc[fsg_link_from_state(l)][silcipid] = 1;
lextree->lc[fsg_link_to_state(l)][silcipid] = 1;
}
else {
len = dict_pronlen(lextree->dict, dictwid);
lextree->rc[fsg_link_from_state(l)][dict_pron(lextree->dict, dictwid, 0)] = 1;
lextree->lc[fsg_link_to_state(l)][dict_pron(lextree->dict, dictwid, len - 1)] = 1;
}
}
}
}
for (s = 0; s < fsg->n_state; s++) {
/*
* Add SIL phone to the lclist and rclist of each state. Strictly
* speaking, only needed at start and final states, respectively, but
* all states considered since the user may change the start and final
* states. In any case, most applications would have a silence self
* loop at each state, hence these would be needed anyway.
*/
lextree->lc[s][silcipid] = 1;
lextree->rc[s][silcipid] = 1;
}
/*
* Propagate lc and rc lists past null transitions. (Since FSG contains
* null transitions closure, no need to worry about a chain of successive
* null transitions. Right??)
*
* This can't be joined with the previous loop because we first calculate
* contexts and only then we can propagate them.
*/
for (s = 0; s < fsg->n_state; s++) {
fsg_arciter_t *itor;
for (itor = fsg_model_arcs(fsg, s); itor; itor = fsg_arciter_next(itor)) {
fsg_link_t *l = fsg_arciter_get(itor);
if (fsg_link_wid(l) < 0) {
/*
* lclist(d) |= lclist(s), because all the words ending up at s, can
* now also end at d, becoming the left context for words leaving d.
*/
for (i = 0; i < n_ci; i++)
lextree->lc[fsg_link_to_state(l)][i] |= lextree->lc[fsg_link_from_state(l)][i];
/*
* Similarly, rclist(s) |= rclist(d), because all the words leaving d
* can equivalently leave s, becoming the right context for words
* ending up at s.
*/
for (i = 0; i < n_ci; i++)
lextree->rc[fsg_link_from_state(l)][i] |= lextree->rc[fsg_link_to_state(l)][i];
}
}
}
/* Convert the bit-vector representation into a list */
for (s = 0; s < fsg->n_state; s++) {
j = 0;
for (i = 0; i < n_ci; i++) {
if (lextree->lc[s][i]) {
lextree->lc[s][j] = i;
j++;
}
}
lextree->lc[s][j] = -1; /* Terminate the list */
j = 0;
for (i = 0; i < n_ci; i++) {
if (lextree->rc[s][i]) {
lextree->rc[s][j] = i;
j++;
}
}
lextree->rc[s][j] = -1; /* Terminate the list */
}
}
/*
* Add the word emitted by the given transition (fsglink) to the given lextree
* (rooted at root), and return the new lextree root. (There may actually be
* several root nodes, maintained in a linked list via fsg_pnode_t.sibling.
* "root" is the head of this list.)
* lclist, rclist: sets of left and right context phones for this link.
* alloc_head: head of a linear list of all allocated pnodes for the parent
* FSG state, kept elsewhere and updated by this routine.
*/
static fsg_pnode_t *
psubtree_add_trans(fsg_lextree_t *lextree,
fsg_pnode_t * root,
fsg_glist_linklist_t **curglist,
fsg_link_t * fsglink,
int16 *lclist, int16 *rclist,
fsg_pnode_t ** alloc_head)
{
int32 silcipid; /* Silence CI phone ID */
int32 pronlen; /* Pronunciation length */
int32 wid; /* FSG (not dictionary!!) word ID */
int32 dictwid; /* Dictionary (not FSG!!) word ID */
int32 ssid; /* Senone Sequence ID */
int32 tmatid;
gnode_t *gn;
fsg_pnode_t *pnode, *pred, *head;
int32 n_ci, p, lc, rc;
glist_t lc_pnodelist; /* Temp pnodes list for different left contexts */
glist_t rc_pnodelist; /* Temp pnodes list for different right contexts */
int32 i, j;
int n_lc_alloc = 0, n_int_alloc = 0, n_rc_alloc = 0;
silcipid = bin_mdef_silphone(lextree->mdef);
n_ci = bin_mdef_n_ciphone(lextree->mdef);
wid = fsg_link_wid(fsglink);
assert(wid >= 0); /* Cannot be a null transition */
dictwid = dict_wordid(lextree->dict,
fsg_model_word_str(lextree->fsg, wid));
pronlen = dict_pronlen(lextree->dict, dictwid);
assert(pronlen >= 1);
assert(lclist[0] >= 0); /* At least one phonetic context provided */
assert(rclist[0] >= 0);
head = *alloc_head;
pred = NULL;
if (pronlen == 1) { /* Single-phone word */
int ci = dict_first_phone(lextree->dict, dictwid);
/* Only non-filler words are mpx */
if (dict_filler_word(lextree->dict, dictwid)) {
/*
* Left diphone ID for single-phone words already assumes SIL is right
* context; only left contexts need to be handled.
*/
lc_pnodelist = NULL;
for (i = 0; lclist[i] >= 0; i++) {
lc = lclist[i];
ssid = dict2pid_lrdiph_rc(lextree->d2p, ci, lc, silcipid);
tmatid = bin_mdef_pid2tmatid(lextree->mdef, dict_first_phone(lextree->dict, dictwid));
/* Check if this ssid already allocated for some other context */
for (gn = lc_pnodelist; gn; gn = gnode_next(gn)) {
pnode = (fsg_pnode_t *) gnode_ptr(gn);
if (hmm_nonmpx_ssid(&pnode->hmm) == ssid) {
/* already allocated; share it for this context phone */
fsg_pnode_add_ctxt(pnode, lc);
break;
}
}
if (!gn) { /* ssid not already allocated */
pnode =
(fsg_pnode_t *) ckd_calloc(1, sizeof(fsg_pnode_t));
pnode->ctx = lextree->ctx;
pnode->next.fsglink = fsglink;
pnode->logs2prob =
(fsg_link_logs2prob(fsglink) >> SENSCR_SHIFT)
+ lextree->wip + lextree->pip;
pnode->ci_ext = dict_first_phone(lextree->dict, dictwid);
pnode->ppos = 0;
pnode->leaf = TRUE;
pnode->sibling = root; /* All root nodes linked together */
fsg_pnode_add_ctxt(pnode, lc); /* Initially zeroed by calloc above */
pnode->alloc_next = head;
head = pnode;
root = pnode;
++n_lc_alloc;
hmm_init(lextree->ctx, &pnode->hmm, FALSE, ssid, tmatid);
lc_pnodelist =
glist_add_ptr(lc_pnodelist, (void *) pnode);
}
}
/*ARCHAN, to allow backward compatibility -lm, -lmctlfn coexists. This makes the current implmentation more complicated than necessary. */
void kb_init (kb_t *kb)
{
kbcore_t *kbcore;
mdef_t *mdef;
dict_t *dict;
dict2pid_t *d2p;
lm_t *lm;
lmset_t *lmset;
s3cipid_t sil, ci;
s3wid_t w;
int32 i, n, n_lc;
wordprob_t *wp;
s3cipid_t *lc;
bitvec_t lc_active;
char *str;
int32 cisencnt;
int32 j;
/* Initialize the kb structure to zero, just in case */
memset(kb, 0, sizeof(*kb));
kb->kbcore = NULL;
kb->kbcore = kbcore_init (cmd_ln_float32 ("-logbase"),
cmd_ln_str("-feat"),
cmd_ln_str("-cmn"),
cmd_ln_str("-varnorm"),
cmd_ln_str("-agc"),
cmd_ln_str("-mdef"),
cmd_ln_str("-dict"),
cmd_ln_str("-fdict"),
"", /* Hack!! Hardwired constant
for -compsep argument */
cmd_ln_str("-lm"),
cmd_ln_str("-lmctlfn"),
cmd_ln_str("-lmdumpdir"),
cmd_ln_str("-fillpen"),
cmd_ln_str("-senmgau"),
cmd_ln_float32("-silprob"),
cmd_ln_float32("-fillprob"),
cmd_ln_float32("-lw"),
cmd_ln_float32("-wip"),
cmd_ln_float32("-uw"),
cmd_ln_str("-mean"),
cmd_ln_str("-var"),
cmd_ln_float32("-varfloor"),
cmd_ln_str("-mixw"),
cmd_ln_float32("-mixwfloor"),
cmd_ln_str("-subvq"),
cmd_ln_str("-gs"),
cmd_ln_str("-tmat"),
cmd_ln_float32("-tmatfloor"));
if(kb->kbcore==NULL){
E_FATAL("Initialization of kb failed\n");
}
kbcore = kb->kbcore;
mdef = kbcore_mdef(kbcore);
dict = kbcore_dict(kbcore);
lm = kbcore_lm(kbcore);
lmset=kbcore_lmset(kbcore);
d2p = kbcore_dict2pid(kbcore);
if (NOT_S3WID(dict_startwid(dict)) || NOT_S3WID(dict_finishwid(dict)))
E_FATAL("%s or %s not in dictionary\n", S3_START_WORD, S3_FINISH_WORD);
if(lmset){
for(i=0;i<kbcore_nlm(kbcore);i++){
if (NOT_S3LMWID(lm_startwid(lmset[i].lm)) || NOT_S3LMWID(lm_finishwid(lmset[i].lm)))
E_FATAL("%s or %s not in LM %s\n", S3_START_WORD, S3_FINISH_WORD,lmset[i].name);
}
}else if(lm){
if (NOT_S3LMWID(lm_startwid(lm)) || NOT_S3LMWID(lm_finishwid(lm)))
E_FATAL("%s or %s not in LM\n", S3_START_WORD, S3_FINISH_WORD);
}
/* Check that HMM topology restrictions are not violated */
if (tmat_chk_1skip (kbcore->tmat) < 0)
E_FATAL("Tmat contains arcs skipping more than 1 state\n");
/*
* Unlink <s> and </s> between dictionary and LM, to prevent their
* recognition. They are merely dummy words (anchors) at the beginning
* and end of each utterance.
*/
if(lmset){
for(i=0;i<kbcore_nlm(kbcore);i++){
lm_lmwid2dictwid(lmset[i].lm, lm_startwid(lmset[i].lm)) = BAD_S3WID;
lm_lmwid2dictwid(lmset[i].lm, lm_finishwid(lmset[i].lm)) = BAD_S3WID;
for (w = dict_startwid(dict); IS_S3WID(w); w = dict_nextalt(dict, w))
lmset[i].lm->dict2lmwid[w] = BAD_S3LMWID;
for (w = dict_finishwid(dict); IS_S3WID(w); w = dict_nextalt(dict, w))
lmset[i].lm->dict2lmwid[w] = BAD_S3LMWID;
}
}else if(lm){ /* No LM is set at this point*/
lm_lmwid2dictwid(lm, lm_startwid(lm)) = BAD_S3WID;
lm_lmwid2dictwid(lm, lm_finishwid(lm)) = BAD_S3WID;
for (w = dict_startwid(dict); IS_S3WID(w); w = dict_nextalt(dict, w))
kbcore->dict2lmwid[w] = BAD_S3LMWID;
for (w = dict_finishwid(dict); IS_S3WID(w); w = dict_nextalt(dict, w))
kbcore->dict2lmwid[w] = BAD_S3LMWID;
}
sil = mdef_silphone (kbcore_mdef (kbcore));
if (NOT_S3CIPID(sil))
E_FATAL("Silence phone '%s' not in mdef\n", S3_SILENCE_CIPHONE);
kb->sen_active = (int32 *) ckd_calloc (mdef_n_sen(mdef), sizeof(int32));
kb->rec_sen_active = (int32 *) ckd_calloc (mdef_n_sen(mdef), sizeof(int32));
kb->ssid_active = (int32 *) ckd_calloc (mdef_n_sseq(mdef), sizeof(int32));
kb->comssid_active = (int32 *) ckd_calloc (dict2pid_n_comsseq(d2p), sizeof(int32));
/* Build set of all possible left contexts */
lc = (s3cipid_t *) ckd_calloc (mdef_n_ciphone(mdef) + 1, sizeof(s3cipid_t));
lc_active = bitvec_alloc (mdef_n_ciphone (mdef));
for (w = 0; w < dict_size (dict); w++) {
ci = dict_pron (dict, w, dict_pronlen(dict, w) - 1);
if (! mdef_is_fillerphone (mdef, (int)ci))
bitvec_set (lc_active, ci);
}
ci = mdef_silphone(mdef);
bitvec_set (lc_active, ci);
for (ci = 0, n_lc = 0; ci < mdef_n_ciphone(mdef); ci++) {
if (bitvec_is_set (lc_active, ci))
lc[n_lc++] = ci;
}
lc[n_lc] = BAD_S3CIPID;
E_INFO("Building lextrees\n");
/* Get the number of lexical tree*/
kb->n_lextree = cmd_ln_int32 ("-Nlextree");
if (kb->n_lextree < 1) {
E_ERROR("No. of ugtrees specified: %d; will instantiate 1 ugtree\n",
kb->n_lextree);
kb->n_lextree = 1;
}
/* ARCHAN: This code was rearranged in s3.4 implementation of dynamic LM */
/* Build active word list */
wp = (wordprob_t *) ckd_calloc (dict_size(dict), sizeof(wordprob_t));
if(lmset){
kb->ugtreeMulti = (lextree_t **) ckd_calloc (kbcore_nlm(kbcore)*kb->n_lextree, sizeof(lextree_t *));
/* Just allocate pointers*/
kb->ugtree = (lextree_t **) ckd_calloc (kb->n_lextree, sizeof(lextree_t *));
for(i=0;i<kbcore_nlm(kbcore);i++){
E_INFO("Creating Unigram Table for lm %d name %s\n",i,lmset[i].name);
n=0;
for(j=0;j<dict_size(dict);j++){ /*try to be very careful again */
wp[j].wid=-1;
wp[j].prob=-1;
}
n = lm_ug_wordprob (lmset[i].lm, dict,MAX_NEG_INT32, wp);
E_INFO("Size of word table after unigram + words in class: %d.\n",n);
if (n < 1)
E_FATAL("%d active words in %s\n", n,lmset[i].name);
n = wid_wordprob2alt(dict,wp,n);
E_INFO("Size of word table after adding alternative prons: %d.\n",n);
if (cmd_ln_int32("-treeugprob") == 0) {
for (i = 0; i < n; i++)
wp[i].prob = -1; /* Flatten all initial probabilities */
}
for (j = 0; j < kb->n_lextree; j++) {
kb->ugtreeMulti[i*kb->n_lextree+j] = lextree_build (kbcore, wp, n, lc);
lextree_type (kb->ugtreeMulti[i*kb->n_lextree+j]) = 0;
E_INFO("Lextrees (%d) for lm %d name %s, %d nodes(ug)\n",
kb->n_lextree, i, lmset[i].name,lextree_n_node(kb->ugtreeMulti[i*kb->n_lextree+j]));
}
}
}else if (lm){
E_INFO("Creating Unigram Table\n");
n=0;
n = lm_ug_wordprob (lm, dict,MAX_NEG_INT32, wp);
E_INFO("Size of word table after unigram + words in class: %d\n",n);
if (n < 1)
E_FATAL("%d active words\n", n);
n = wid_wordprob2alt (dict, wp, n); /* Add alternative pronunciations */
/* Retain or remove unigram probs from lextree, depending on option */
if (cmd_ln_int32("-treeugprob") == 0) {
for (i = 0; i < n; i++)
wp[i].prob = -1; /* Flatten all initial probabilities */
}
/* Create the desired no. of unigram lextrees */
kb->ugtree = (lextree_t **) ckd_calloc (kb->n_lextree, sizeof(lextree_t *));
for (i = 0; i < kb->n_lextree; i++) {
kb->ugtree[i] = lextree_build (kbcore, wp, n, lc);
lextree_type (kb->ugtree[i]) = 0;
}
E_INFO("Lextrees(%d), %d nodes(ug)\n",
kb->n_lextree, lextree_n_node(kb->ugtree[0]));
}
/* Create filler lextrees */
/* ARCHAN : only one filler tree is supposed to be build even for dynamic LMs */
n = 0;
for (i = dict_filler_start(dict); i <= dict_filler_end(dict); i++) {
if (dict_filler_word(dict, i)) {
wp[n].wid = i;
wp[n].prob = fillpen (kbcore->fillpen, i);
n++;
}
}
kb->fillertree = (lextree_t **)ckd_calloc(kb->n_lextree,sizeof(lextree_t*));
for (i = 0; i < kb->n_lextree; i++) {
kb->fillertree[i] = lextree_build (kbcore, wp, n, NULL);
lextree_type (kb->fillertree[i]) = -1;
}
ckd_free ((void *) wp);
ckd_free ((void *) lc);
bitvec_free (lc_active);
E_INFO("Lextrees(%d), %d nodes(filler)\n",
kb->n_lextree,
lextree_n_node(kb->fillertree[0]));
if (cmd_ln_int32("-lextreedump")) {
if(lmset){
E_FATAL("Currently, doesn't support -lextreedump for multiple-LMs\n");
}
for (i = 0; i < kb->n_lextree; i++) {
fprintf (stderr, "UGTREE %d\n", i);
lextree_dump (kb->ugtree[i], dict, stderr);
}
for (i = 0; i < kb->n_lextree; i++) {
fprintf (stderr, "FILLERTREE %d\n", i);
lextree_dump (kb->fillertree[i], dict, stderr);
}
fflush (stderr);
}
kb->ascr = ascr_init (mgau_n_mgau(kbcore_mgau(kbcore)),
kbcore->dict2pid->n_comstate);
kb->beam = beam_init (cmd_ln_float64("-subvqbeam"),
cmd_ln_float64("-beam"),
cmd_ln_float64("-pbeam"),
cmd_ln_float64("-wbeam"));
E_INFO("Beam= %d, PBeam= %d, WBeam= %d, SVQBeam= %d\n",
kb->beam->hmm, kb->beam->ptrans, kb->beam->word, kb->beam->subvq);
/*Sections of optimization related parameters*/
kb->ds_ratio=cmd_ln_int32("-ds");
E_INFO("Down Sampling Ratio = %d\n",kb->ds_ratio);
kb->rec_bstcid=-1;
kb->skip_count=0;
kb->cond_ds=cmd_ln_int32("-cond_ds");
E_INFO("Conditional Down Sampling Parameter = %d\n",kb->cond_ds);
if(kb->cond_ds>0&&kb->kbcore->gs==NULL) E_FATAL("Conditional Down Sampling require the use of Gaussian Selection map\n");
kb->gs4gs=cmd_ln_int32("-gs4gs");
E_INFO("GS map would be used for Gaussian Selection? = %d\n",kb->gs4gs);
kb->svq4svq=cmd_ln_int32("-svq4svq");
E_INFO("SVQ would be used as Gaussian Score ?= %d\n",kb->svq4svq);
kb->ci_pbeam=-1*logs3(cmd_ln_float32("-ci_pbeam"));
E_INFO("CI phone beam to prune the number of parent CI phones in CI-base GMM Selection = %d\n",kb->ci_pbeam);
if(kb->ci_pbeam>10000000){
E_INFO("Virtually no CI phone beam is applied now. (ci_pbeam>1000000)\n");
}
kb->wend_beam=-1*logs3(cmd_ln_float32("-wend_beam"));
E_INFO("Word-end pruning beam: %d\n",kb->wend_beam);
kb->pl_window=cmd_ln_int32("-pl_window");
E_INFO("Phoneme look-ahead window size = %d\n",kb->pl_window);
kb->pl_window_start=0;
kb->pl_beam=logs3(cmd_ln_float32("-pl_beam"));
E_INFO("Phoneme look-ahead beam = %d\n",kb->pl_beam);
for(cisencnt=0;cisencnt==mdef->cd2cisen[cisencnt];cisencnt++)
;
kb->cache_ci_senscr=(int32**)ckd_calloc_2d(kb->pl_window,cisencnt,sizeof(int32));
kb->cache_best_list=(int32*)ckd_calloc(kb->pl_window,sizeof(int32));
kb->phn_heur_list=(int32*)ckd_calloc(mdef_n_ciphone (mdef),sizeof(int32));
if ((kb->feat = feat_array_alloc(kbcore_fcb(kbcore),S3_MAX_FRAMES)) == NULL)
E_FATAL("feat_array_alloc() failed\n");
kb->vithist = vithist_init(kbcore, kb->beam->word, cmd_ln_int32("-bghist"));
ptmr_init (&(kb->tm_sen));
ptmr_init (&(kb->tm_srch));
ptmr_init (&(kb->tm_ovrhd));
kb->tot_fr = 0;
kb->tot_sen_eval = 0.0;
kb->tot_gau_eval = 0.0;
kb->tot_hmm_eval = 0.0;
kb->tot_wd_exit = 0.0;
kb->hmm_hist_binsize = cmd_ln_int32("-hmmhistbinsize");
if(lmset)
n = ((kb->ugtreeMulti[0]->n_node) + (kb->fillertree[0]->n_node)) * kb->n_lextree;
else
n = ((kb->ugtree[0]->n_node) + (kb->fillertree[0]->n_node)) * kb->n_lextree;
n /= kb->hmm_hist_binsize;
kb->hmm_hist_bins = n+1;
kb->hmm_hist = (int32 *) ckd_calloc (n+1, sizeof(int32)); /* Really no need for +1 */
/* Open hypseg file if specified */
str = cmd_ln_str("-hypseg");
kb->matchsegfp = NULL;
if (str) {
#ifdef SPEC_CPU_WINDOWS
if ((kb->matchsegfp = fopen(str, "wt")) == NULL)
#else
if ((kb->matchsegfp = fopen(str, "w")) == NULL)
#endif
E_ERROR("fopen(%s,w) failed; use FWDXCT: from std logfile\n", str);
}
str = cmd_ln_str("-hyp");
kb->matchfp = NULL;
if (str) {
#ifdef SPEC_CPU_WINDOWS
if ((kb->matchfp = fopen(str, "wt")) == NULL)
#else
if ((kb->matchfp = fopen(str, "w")) == NULL)
#endif
E_ERROR("fopen(%s,w) failed; use FWDXCT: from std logfile\n", str);
}
}
dict2pid_t *
dict2pid_build(bin_mdef_t * mdef, dict_t * dict)
{
dict2pid_t *dict2pid;
s3ssid_t ***rdiph_rc;
bitvec_t *ldiph, *rdiph, *single;
int32 pronlen;
int32 b, l, r, w, p;
E_INFO("Building PID tables for dictionary\n");
assert(mdef);
assert(dict);
dict2pid = (dict2pid_t *) ckd_calloc(1, sizeof(dict2pid_t));
dict2pid->refcount = 1;
dict2pid->mdef = bin_mdef_retain(mdef);
dict2pid->dict = dict_retain(dict);
E_INFO("Allocating %d^3 * %d bytes (%d KiB) for word-initial triphones\n",
mdef->n_ciphone, sizeof(s3ssid_t),
mdef->n_ciphone * mdef->n_ciphone * mdef->n_ciphone * sizeof(s3ssid_t) / 1024);
dict2pid->ldiph_lc =
(s3ssid_t ***) ckd_calloc_3d(mdef->n_ciphone, mdef->n_ciphone,
mdef->n_ciphone, sizeof(s3ssid_t));
/* Only used internally to generate rssid */
rdiph_rc =
(s3ssid_t ***) ckd_calloc_3d(mdef->n_ciphone, mdef->n_ciphone,
mdef->n_ciphone, sizeof(s3ssid_t));
dict2pid->lrdiph_rc = (s3ssid_t ***) ckd_calloc_3d(mdef->n_ciphone,
mdef->n_ciphone,
mdef->n_ciphone,
sizeof
(s3ssid_t));
/* Actually could use memset for this, if BAD_S3SSID is guaranteed
* to be 65535... */
for (b = 0; b < mdef->n_ciphone; ++b) {
for (r = 0; r < mdef->n_ciphone; ++r) {
for (l = 0; l < mdef->n_ciphone; ++l) {
dict2pid->ldiph_lc[b][r][l] = BAD_S3SSID;
dict2pid->lrdiph_rc[b][l][r] = BAD_S3SSID;
rdiph_rc[b][l][r] = BAD_S3SSID;
}
}
}
/* Track which diphones / ciphones have been seen. */
ldiph = bitvec_alloc(mdef->n_ciphone * mdef->n_ciphone);
rdiph = bitvec_alloc(mdef->n_ciphone * mdef->n_ciphone);
single = bitvec_alloc(mdef->n_ciphone);
for (w = 0; w < dict_size(dict2pid->dict); w++) {
pronlen = dict_pronlen(dict, w);
if (pronlen >= 2) {
b = dict_first_phone(dict, w);
r = dict_second_phone(dict, w);
/* Populate ldiph_lc */
if (bitvec_is_clear(ldiph, b * mdef->n_ciphone + r)) {
/* Mark this diphone as done */
bitvec_set(ldiph, b * mdef->n_ciphone + r);
/* Record all possible ssids for b(?,r) */
for (l = 0; l < bin_mdef_n_ciphone(mdef); l++) {
p = bin_mdef_phone_id_nearest(mdef, (s3cipid_t) b,
(s3cipid_t) l, (s3cipid_t) r,
WORD_POSN_BEGIN);
dict2pid->ldiph_lc[b][r][l] = bin_mdef_pid2ssid(mdef, p);
}
}
/* Populate rdiph_rc */
l = dict_second_last_phone(dict, w);
b = dict_last_phone(dict, w);
if (bitvec_is_clear(rdiph, b * mdef->n_ciphone + l)) {
/* Mark this diphone as done */
bitvec_set(rdiph, b * mdef->n_ciphone + l);
for (r = 0; r < bin_mdef_n_ciphone(mdef); r++) {
p = bin_mdef_phone_id_nearest(mdef, (s3cipid_t) b,
(s3cipid_t) l, (s3cipid_t) r,
WORD_POSN_END);
rdiph_rc[b][l][r] = bin_mdef_pid2ssid(mdef, p);
}
}
}
else if (pronlen == 1) {
b = dict_pron(dict, w, 0);
E_DEBUG(1,("Building tables for single phone word %s phone %d = %s\n",
dict_wordstr(dict, w), b, bin_mdef_ciphone_str(mdef, b)));
/* Populate lrdiph_rc (and also ldiph_lc, rdiph_rc if needed) */
if (bitvec_is_clear(single, b)) {
populate_lrdiph(dict2pid, rdiph_rc, b);
bitvec_set(single, b);
}
}
}
bitvec_free(ldiph);
bitvec_free(rdiph);
bitvec_free(single);
/* Try to compress rdiph_rc into rdiph_rc_compressed */
compress_right_context_tree(dict2pid, rdiph_rc);
compress_left_right_context_tree(dict2pid);
ckd_free_3d(rdiph_rc);
dict2pid_report(dict2pid);
return dict2pid;
}
void kb_init (kb_t *kb)
{
kbcore_t *kbcore;
mdef_t *mdef;
dict_t *dict;
dict2pid_t *d2p;
lm_t *lm;
s3cipid_t sil, ci;
s3wid_t w;
int32 i, n, n_lc;
wordprob_t *wp;
s3cipid_t *lc;
bitvec_t lc_active;
char *str;
/* Initialize the kb structure to zero, just in case */
memset(kb, 0, sizeof(*kb));
kb->kbcore = kbcore_init (cmd_ln_float32 ("-logbase"),
"1s_c_d_dd", /* Hack!! Hardwired constant
for -feat argument */
cmd_ln_str("-cmn"),
cmd_ln_str("-varnorm"),
cmd_ln_str("-agc"),
cmd_ln_str("-mdef"),
cmd_ln_str("-dict"),
cmd_ln_str("-fdict"),
"", /* Hack!! Hardwired constant
for -compsep argument */
cmd_ln_str("-lm"),
cmd_ln_str("-fillpen"),
cmd_ln_float32("-silprob"),
cmd_ln_float32("-fillprob"),
cmd_ln_float32("-lw"),
cmd_ln_float32("-wip"),
cmd_ln_float32("-uw"),
cmd_ln_str("-mean"),
cmd_ln_str("-var"),
cmd_ln_float32("-varfloor"),
cmd_ln_str("-mixw"),
cmd_ln_float32("-mixwfloor"),
cmd_ln_str("-subvq"),
cmd_ln_str("-tmat"),
cmd_ln_float32("-tmatfloor"));
kbcore = kb->kbcore;
mdef = kbcore_mdef(kbcore);
dict = kbcore_dict(kbcore);
lm = kbcore_lm(kbcore);
d2p = kbcore_dict2pid(kbcore);
if (NOT_S3WID(dict_startwid(dict)) || NOT_S3WID(dict_finishwid(dict)))
E_FATAL("%s or %s not in dictionary\n", S3_START_WORD, S3_FINISH_WORD);
if (NOT_S3LMWID(lm_startwid(lm)) || NOT_S3LMWID(lm_finishwid(lm)))
E_FATAL("%s or %s not in LM\n", S3_START_WORD, S3_FINISH_WORD);
/* Check that HMM topology restrictions are not violated */
if (tmat_chk_1skip (kbcore->tmat) < 0)
E_FATAL("Tmat contains arcs skipping more than 1 state\n");
/*
* Unlink <s> and </s> between dictionary and LM, to prevent their
* recognition. They are merely dummy words (anchors) at the beginning
* and end of each utterance.
*/
lm_lmwid2dictwid(lm, lm_startwid(lm)) = BAD_S3WID;
lm_lmwid2dictwid(lm, lm_finishwid(lm)) = BAD_S3WID;
for (w = dict_startwid(dict); IS_S3WID(w); w = dict_nextalt(dict, w))
kbcore->dict2lmwid[w] = BAD_S3LMWID;
for (w = dict_finishwid(dict); IS_S3WID(w); w = dict_nextalt(dict, w))
kbcore->dict2lmwid[w] = BAD_S3LMWID;
sil = mdef_silphone (kbcore_mdef (kbcore));
if (NOT_S3CIPID(sil))
E_FATAL("Silence phone '%s' not in mdef\n", S3_SILENCE_CIPHONE);
E_INFO("Building lextrees\n");
kb->sen_active = (int32 *) ckd_calloc (mdef_n_sen(mdef), sizeof(int32));
kb->ssid_active = (int32 *) ckd_calloc (mdef_n_sseq(mdef), sizeof(int32));
kb->comssid_active = (int32 *) ckd_calloc (dict2pid_n_comsseq(d2p),
sizeof(int32));
/* Build active word list */
wp = (wordprob_t *) ckd_calloc (dict_size(dict), sizeof(wordprob_t));
n = lm_ug_wordprob (lm, MAX_NEG_INT32, wp);
if (n < 1)
E_FATAL("%d active words\n", n);
n = wid_wordprob2alt (dict, wp, n); /* Add alternative pronunciations */
/* Retain or remove unigram probs from lextree, depending on option */
if (cmd_ln_int32("-treeugprob") == 0) {
for (i = 0; i < n; i++)
wp[i].prob = -1; /* Flatten all initial probabilities */
}
/* Build set of all possible left contexts */
lc = (s3cipid_t *) ckd_calloc (mdef_n_ciphone(mdef) + 1, sizeof(s3cipid_t));
lc_active = bitvec_alloc (mdef_n_ciphone (mdef));
for (w = 0; w < dict_size (dict); w++) {
ci = dict_pron (dict, w, dict_pronlen(dict, w) - 1);
if (! mdef_is_fillerphone (mdef, (int)ci))
bitvec_set (lc_active, ci);
}
ci = mdef_silphone(mdef);
bitvec_set (lc_active, ci);
for (ci = 0, n_lc = 0; ci < mdef_n_ciphone(mdef); ci++) {
if (bitvec_is_set (lc_active, ci))
lc[n_lc++] = ci;
}
lc[n_lc] = BAD_S3CIPID;
/* Create the desired no. of unigram lextrees */
kb->n_lextree = cmd_ln_int32 ("-Nlextree");
if (kb->n_lextree < 1) {
E_ERROR("No. of ugtrees specified: %d; will instantiate 1 ugtree\n",
kb->n_lextree);
kb->n_lextree = 1;
}
kb->ugtree = (lextree_t **) ckd_calloc (kb->n_lextree, sizeof(lextree_t *));
for (i = 0; i < kb->n_lextree; i++) {
kb->ugtree[i] = lextree_build (kbcore, wp, n, lc);
lextree_type (kb->ugtree[i]) = 0;
}
bitvec_free (lc_active);
ckd_free ((void *) lc);
/* Create filler lextrees */
n = 0;
for (i = dict_filler_start(dict); i <= dict_filler_end(dict); i++) {
if (dict_filler_word(dict, i)) {
wp[n].wid = i;
wp[n].prob = fillpen (kbcore->fillpen, i);
n++;
}
}
kb->fillertree = (lextree_t **)ckd_calloc(kb->n_lextree,sizeof(lextree_t*));
for (i = 0; i < kb->n_lextree; i++) {
kb->fillertree[i] = lextree_build (kbcore, wp, n, NULL);
lextree_type (kb->fillertree[i]) = -1;
}
ckd_free ((void *) wp);
E_INFO("Lextrees(%d), %d nodes(ug), %d nodes(filler)\n",
kb->n_lextree, lextree_n_node(kb->ugtree[0]),
lextree_n_node(kb->fillertree[0]));
if (cmd_ln_int32("-lextreedump")) {
for (i = 0; i < kb->n_lextree; i++) {
fprintf (stderr, "UGTREE %d\n", i);
lextree_dump (kb->ugtree[i], dict, stderr);
}
for (i = 0; i < kb->n_lextree; i++) {
fprintf (stderr, "FILLERTREE %d\n", i);
lextree_dump (kb->fillertree[i], dict, stderr);
}
fflush (stderr);
}
kb->ascr = ascr_init (mgau_n_mgau(kbcore_mgau(kbcore)),
kbcore->dict2pid->n_comstate);
kb->beam = beam_init (cmd_ln_float64("-subvqbeam"),
cmd_ln_float64("-beam"),
cmd_ln_float64("-pbeam"),
cmd_ln_float64("-wbeam"));
E_INFO("Beam= %d, PBeam= %d, WBeam= %d, SVQBeam= %d\n",
kb->beam->hmm, kb->beam->ptrans, kb->beam->word, kb->beam->subvq);
if ((kb->feat = feat_array_alloc(kbcore_fcb(kbcore),S3_MAX_FRAMES)) == NULL)
E_FATAL("feat_array_alloc() failed\n");
kb->vithist = vithist_init(kbcore, kb->beam->word, cmd_ln_int32("-bghist"));
ptmr_init (&(kb->tm_sen));
ptmr_init (&(kb->tm_srch));
kb->tot_fr = 0;
kb->tot_sen_eval = 0.0;
kb->tot_gau_eval = 0.0;
kb->tot_hmm_eval = 0.0;
kb->tot_wd_exit = 0.0;
kb->hmm_hist_binsize = cmd_ln_int32("-hmmhistbinsize");
n = ((kb->ugtree[0]->n_node) + (kb->fillertree[0]->n_node)) * kb->n_lextree;
n /= kb->hmm_hist_binsize;
kb->hmm_hist_bins = n+1;
kb->hmm_hist = (int32 *) ckd_calloc (n+1, sizeof(int32)); /* Really no need for +1 */
/* Open hypseg file if specified */
str = cmd_ln_str("-hypseg");
kb->matchsegfp = NULL;
if (str) {
#ifdef WIN32
if ((kb->matchsegfp = fopen(str, "wt")) == NULL)
#else
if ((kb->matchsegfp = fopen(str, "w")) == NULL)
#endif
E_ERROR("fopen(%s,w) failed; use FWDXCT: from std logfile\n", str);
}
}
/* RAH 4.16.01 This code has several leaks that must be fixed */
dict2pid_t *dict2pid_build (mdef_t *mdef, dict_t *dict)
{
dict2pid_t *dict2pid;
s3ssid_t *internal, **ldiph, **rdiph, *single;
int32 pronlen;
hash_table_t *hs, *hp;
glist_t g;
gnode_t *gn;
s3senid_t *sen;
hash_entry_t *he;
int32 *cslen;
int32 i, j, b, l, r, w, n, p;
E_INFO("Building PID tables for dictionary\n");
dict2pid = (dict2pid_t *) ckd_calloc (1, sizeof(dict2pid_t));
dict2pid->internal = (s3ssid_t **) ckd_calloc (dict_size(dict), sizeof(s3ssid_t *));
dict2pid->ldiph_lc = (s3ssid_t ***) ckd_calloc_3d (mdef->n_ciphone,
mdef->n_ciphone,
mdef->n_ciphone,
sizeof(s3ssid_t));
dict2pid->single_lc = (s3ssid_t **) ckd_calloc_2d (mdef->n_ciphone,
mdef->n_ciphone,
sizeof(s3ssid_t));
dict2pid->n_comstate = 0;
dict2pid->n_comsseq = 0;
hs = hash_new (mdef->n_ciphone * mdef->n_ciphone * mdef->n_emit_state, HASH_CASE_YES);
hp = hash_new (mdef->n_ciphone * mdef->n_ciphone, HASH_CASE_YES);
for (w = 0, n = 0; w < dict_size(dict); w++) {
pronlen = dict_pronlen(dict, w);
if (pronlen < 0)
E_FATAL("Pronunciation-length(%s)= %d\n", dict_wordstr(dict, w), pronlen);
n += pronlen;
}
internal = (s3ssid_t *) ckd_calloc (n, sizeof(s3ssid_t));
/* Temporary */
ldiph = (s3ssid_t **) ckd_calloc_2d (mdef->n_ciphone, mdef->n_ciphone, sizeof(s3ssid_t));
rdiph = (s3ssid_t **) ckd_calloc_2d (mdef->n_ciphone, mdef->n_ciphone, sizeof(s3ssid_t));
single = (s3ssid_t *) ckd_calloc (mdef->n_ciphone, sizeof(s3ssid_t));
for (b = 0; b < mdef->n_ciphone; b++) {
for (l = 0; l < mdef->n_ciphone; l++) {
for (r = 0; r < mdef->n_ciphone; r++)
dict2pid->ldiph_lc[b][r][l] = BAD_S3SSID;
dict2pid->single_lc[b][l] = BAD_S3SSID;
ldiph[b][l] = BAD_S3SSID;
rdiph[b][l] = BAD_S3SSID;
}
single[b] = BAD_S3SSID;
}
for (w = 0; w < dict_size(dict); w++) {
dict2pid->internal[w] = internal;
pronlen = dict_pronlen(dict,w);
if (pronlen >= 2) {
b = dict_pron(dict, w, 0);
r = dict_pron(dict, w, 1);
if (NOT_S3SSID(ldiph[b][r])) {
g = ldiph_comsseq(mdef, b, r);
ldiph[b][r] = ssidlist2comsseq (g, mdef, dict2pid, hs, hp);
glist_free (g);
for (l = 0; l < mdef_n_ciphone(mdef); l++) {
p = mdef_phone_id_nearest (mdef, (s3cipid_t)b, (s3cipid_t)l, (s3cipid_t)r, WORD_POSN_BEGIN);
dict2pid->ldiph_lc[b][r][l] = mdef_pid2ssid(mdef, p);
}
}
internal[0] = ldiph[b][r];
for (i = 1; i < pronlen-1; i++) {
l = b;
b = r;
r = dict_pron(dict, w, i+1);
p = mdef_phone_id_nearest(mdef, (s3cipid_t)b, (s3cipid_t)l, (s3cipid_t)r, WORD_POSN_INTERNAL);
internal[i] = mdef_pid2ssid(mdef, p);
}
l = b;
b = r;
if (NOT_S3SSID(rdiph[b][l])) {
g = rdiph_comsseq(mdef, b, l);
rdiph[b][l] = ssidlist2comsseq (g, mdef, dict2pid, hs, hp);
glist_free (g);
}
internal[pronlen-1] = rdiph[b][l];
} else if (pronlen == 1) {
b = dict_pron(dict, w, 0);
if (NOT_S3SSID(single[b])) {
g = single_comsseq(mdef, b);
single[b] = ssidlist2comsseq (g, mdef, dict2pid, hs, hp);
glist_free (g);
for (l = 0; l < mdef_n_ciphone(mdef); l++) {
g = single_lc_comsseq(mdef, b, l);
dict2pid->single_lc[b][l] = ssidlist2comsseq (g, mdef, dict2pid, hs, hp);
glist_free (g);
}
}
internal[0] = single[b];
}
internal += pronlen;
}
ckd_free_2d ((void **) ldiph);
ckd_free_2d ((void **) rdiph);
ckd_free ((void *) single);
/* Allocate space for composite state table */
cslen = (int32 *) ckd_calloc (dict2pid->n_comstate, sizeof(int32));
g = hash_tolist(hs, &n);
assert (n == dict2pid->n_comstate);
n = 0;
for (gn = g; gn; gn = gnode_next(gn)) {
he = (hash_entry_t *) gnode_ptr (gn);
sen = (s3senid_t *) hash_entry_key(he);
for (i = 0; IS_S3SENID(sen[i]); i++);
cslen[hash_entry_val(he)] = i+1; /* +1 for terminating sentinel */
n += (i+1);
}
dict2pid->comstate = (s3senid_t **) ckd_calloc (dict2pid->n_comstate, sizeof(s3senid_t *));
sen = (s3senid_t *) ckd_calloc (n, sizeof(s3senid_t));
for (i = 0; i < dict2pid->n_comstate; i++) {
dict2pid->comstate[i] = sen;
sen += cslen[i];
}
/* Build composite state table from hash table hs */
for (gn = g; gn; gn = gnode_next(gn)) {
he = (hash_entry_t *) gnode_ptr (gn);
sen = (s3senid_t *) hash_entry_key(he);
i = hash_entry_val(he);
for (j = 0; j < cslen[i]; j++)
dict2pid->comstate[i][j] = sen[j];
assert (sen[j-1] == BAD_S3SENID);
ckd_free ((void *)sen);
}
ckd_free (cslen);
glist_free (g);
hash_free (hs);
/* Allocate space for composite sseq table */
dict2pid->comsseq = (s3senid_t **) ckd_calloc (dict2pid->n_comsseq, sizeof(s3senid_t *));
g = hash_tolist (hp, &n);
assert (n == dict2pid->n_comsseq);
/* Build composite sseq table */
for (gn = g; gn; gn = gnode_next(gn)) {
he = (hash_entry_t *) gnode_ptr (gn);
i = hash_entry_val(he);
dict2pid->comsseq[i] = (s3senid_t *) hash_entry_key(he);
}
glist_free (g);
hash_free (hp);
/* Weight for each composite state */
dict2pid->comwt = (int32 *) ckd_calloc (dict2pid->n_comstate, sizeof(int32));
for (i = 0; i < dict2pid->n_comstate; i++) {
sen = dict2pid->comstate[i];
for (j = 0; IS_S3SENID(sen[j]); j++);
#if 0
/* if comstate i has N states, its weight= (1/N^2) (Major Hack!!) */
dict2pid->comwt[i] = - (logs3 ((float64)j) << 1);
#else
/* if comstate i has N states, its weight= 1/N */
dict2pid->comwt[i] = - logs3 ((float64)j);
#endif
}
E_INFO("%d composite states; %d composite sseq\n",
dict2pid->n_comstate, dict2pid->n_comsseq);
return dict2pid;
}
/*
* Compute the left and right context CIphone sets for each state.
* (Needed for building the phone HMM net using cross-word triphones. Invoke
* after computing null transitions closure.)
*/
static void
word_fsg_lc_rc(word_fsg_t * fsg)
{
int32 s, d, i, j;
int32 n_ci;
gnode_t *gn;
word_fsglink_t *l;
int32 silcipid;
int32 endwid;
int32 len;
dict_t *dict;
mdef_t *mdef;
dict = fsg->dict;
mdef = fsg->mdef;
assert(fsg);
assert(dict);
assert(mdef);
endwid = dict_basewid(dict, dict_finishwid(dict));
silcipid = mdef_silphone(mdef);
assert(silcipid >= 0);
E_INFO("Value of silcipid %d\n", silcipid);
n_ci = fsg->n_ciphone;
E_INFO("No of CI phones %d\n", n_ci);
if (n_ci > 127) {
E_FATAL
("#phones(%d) > 127; cannot use int8** for word_fsg_t.{lc,rc}\n",
n_ci);
}
/*
* fsg->lc[s] = set of left context CIphones for state s. Similarly, rc[s]
* for right context CIphones.
*/
fsg->lc =
(int8 **) ckd_calloc_2d(fsg->n_state, n_ci + 1, sizeof(int8));
fsg->rc =
(int8 **) ckd_calloc_2d(fsg->n_state, n_ci + 1, sizeof(int8));
for (s = 0; s < fsg->n_state; s++) {
for (d = 0; d < fsg->n_state; d++) {
for (gn = fsg->trans[s][d]; gn; gn = gnode_next(gn)) {
l = (word_fsglink_t *) gnode_ptr(gn);
assert(l->wid >= 0);
/*
* Add the first CIphone of l->wid to the rclist of state s, and
* the last CIphone to lclist of state d.
* (Filler phones are a pain to deal with. There is no direct
* marking of a filler phone; but only filler words are supposed to
* use such phones, so we use that fact. HACK!! FRAGILE!!)
*/
if (dict_filler_word(dict, l->wid) || (l->wid == endwid)) {
/* Filler phone; use silence phone as context */
fsg->rc[s][silcipid] = 1;
fsg->lc[d][silcipid] = 1;
}
else {
len = dict_pronlen(dict, l->wid);
fsg->rc[s][dict_pron(dict, l->wid, 0)] = 1;
fsg->lc[d][dict_pron(dict, l->wid, len - 1)] = 1;
}
}
}
/*
* Add SIL phone to the lclist and rclist of each state. Strictly
* speaking, only needed at start and final states, respectively, but
* all states considered since the user may change the start and final
* states. In any case, most applications would have a silence self
* loop at each state, hence these would be needed anyway.
*/
fsg->lc[s][silcipid] = 1;
fsg->rc[s][silcipid] = 1;
}
/*
* Propagate lc and rc lists past null transitions. (Since FSG contains
* null transitions closure, no need to worry about a chain of successive
* null transitions. Right??)
*/
for (s = 0; s < fsg->n_state; s++) {
for (d = 0; d < fsg->n_state; d++) {
l = fsg->null_trans[s][d];
if (l) {
/*
* lclist(d) |= lclist(s), because all the words ending up at s, can
* now also end at d, becoming the left context for words leaving d.
*/
for (i = 0; i < n_ci; i++)
fsg->lc[d][i] |= fsg->lc[s][i];
/*
* Similarly, rclist(s) |= rclist(d), because all the words leaving d
* can equivalently leave s, becoming the right context for words
* ending up at s.
*/
for (i = 0; i < n_ci; i++)
fsg->rc[s][i] |= fsg->rc[d][i];
}
}
}
/* Convert the bit-vector representation into a list */
for (s = 0; s < fsg->n_state; s++) {
j = 0;
for (i = 0; i < n_ci; i++) {
if (fsg->lc[s][i]) {
fsg->lc[s][j] = i;
j++;
}
}
fsg->lc[s][j] = -1; /* Terminate the list */
j = 0;
for (i = 0; i < n_ci; i++) {
if (fsg->rc[s][i]) {
fsg->rc[s][j] = i;
j++;
}
}
fsg->rc[s][j] = -1; /* Terminate the list */
}
}
/* FIXME: Somewhat the same as the above function, needs refactoring */
int
ps_alignment_populate_ci(ps_alignment_t *al)
{
dict2pid_t *d2p;
dict_t *dict;
bin_mdef_t *mdef;
int i;
/* Clear phone and state sequences. */
ps_alignment_vector_empty(&al->sseq);
ps_alignment_vector_empty(&al->state);
/* For each word, expand to phones/senone sequences. */
d2p = al->d2p;
dict = d2p->dict;
mdef = d2p->mdef;
for (i = 0; i < al->word.n_ent; ++i) {
ps_alignment_entry_t *went = al->word.seq + i;
ps_alignment_entry_t *sent;
int wid = went->id.wid;
int len = dict_pronlen(dict, wid);
int j;
for (j = 0; j < len; ++j) {
if ((sent = ps_alignment_vector_grow_one(&al->sseq)) == NULL) {
E_ERROR("Failed to add phone entry!\n");
return -1;
}
sent->id.pid.cipid = dict_pron(dict, wid, j);
sent->id.pid.tmatid = bin_mdef_pid2tmatid(mdef, sent->id.pid.cipid);
sent->id.pid.ssid = bin_mdef_pid2ssid(mdef, sent->id.pid.cipid);
oe_assert(sent->id.pid.ssid != BAD_SSID);
sent->start = went->start;
sent->duration = went->duration;
sent->parent = i;
}
}
/* For each senone sequence, expand to senones. (we could do this
* nested above but this makes it more clear and easier to
* refactor) */
for (i = 0; i < al->sseq.n_ent; ++i) {
ps_alignment_entry_t *pent = al->sseq.seq + i;
ps_alignment_entry_t *sent;
int j;
for (j = 0; j < bin_mdef_n_emit_state(mdef); ++j) {
if ((sent = ps_alignment_vector_grow_one(&al->state)) == NULL) {
E_ERROR("Failed to add state entry!\n");
return -1;
}
sent->id.senid = bin_mdef_sseq2sen(mdef, pent->id.pid.ssid, j);
oe_assert(sent->id.senid != BAD_SENID);
sent->start = pent->start;
sent->duration = pent->duration;
sent->parent = i;
if (j == 0)
pent->child = (uint16)(sent - al->state.seq);
}
}
return 0;
}
int
ps_alignment_populate(ps_alignment_t *al)
{
dict2pid_t *d2p;
dict_t *dict;
bin_mdef_t *mdef;
int i, lc;
/* Clear phone and state sequences. */
ps_alignment_vector_empty(&al->sseq);
ps_alignment_vector_empty(&al->state);
/* For each word, expand to phones/senone sequences. */
d2p = al->d2p;
dict = d2p->dict;
mdef = d2p->mdef;
lc = bin_mdef_silphone(mdef);
for (i = 0; i < al->word.n_ent; ++i) {
ps_alignment_entry_t *went = al->word.seq + i;
ps_alignment_entry_t *sent;
int wid = went->id.wid;
int len = dict_pronlen(dict, wid);
int j, rc;
if (i < al->word.n_ent - 1)
rc = dict_first_phone(dict, al->word.seq[i+1].id.wid);
else
rc = bin_mdef_silphone(mdef);
/* First phone. */
if ((sent = ps_alignment_vector_grow_one(&al->sseq)) == NULL) {
E_ERROR("Failed to add phone entry!\n");
return -1;
}
sent->id.pid.cipid = dict_first_phone(dict, wid);
sent->id.pid.tmatid = bin_mdef_pid2tmatid(mdef, sent->id.pid.cipid);
sent->start = went->start;
sent->duration = went->duration;
sent->parent = i;
went->child = (uint16)(sent - al->sseq.seq);
if (len == 1)
sent->id.pid.ssid
= dict2pid_lrdiph_rc(d2p, sent->id.pid.cipid, lc, rc);
else
sent->id.pid.ssid
= dict2pid_ldiph_lc(d2p, sent->id.pid.cipid,
dict_second_phone(dict, wid), lc);
oe_assert(sent->id.pid.ssid != BAD_SSID);
/* Internal phones. */
for (j = 1; j < len - 1; ++j) {
if ((sent = ps_alignment_vector_grow_one(&al->sseq)) == NULL) {
E_ERROR("Failed to add phone entry!\n");
return -1;
}
sent->id.pid.cipid = dict_pron(dict, wid, j);
sent->id.pid.tmatid = bin_mdef_pid2tmatid(mdef, sent->id.pid.cipid);
sent->id.pid.ssid = dict2pid_internal(d2p, wid, j);
oe_assert(sent->id.pid.ssid != BAD_SSID);
sent->start = went->start;
sent->duration = went->duration;
sent->parent = i;
}
/* Last phone. */
if (j < len) {
xwdssid_t *rssid;
oe_assert(j == len - 1);
if ((sent = ps_alignment_vector_grow_one(&al->sseq)) == NULL) {
E_ERROR("Failed to add phone entry!\n");
return -1;
}
sent->id.pid.cipid = dict_last_phone(dict, wid);
sent->id.pid.tmatid = bin_mdef_pid2tmatid(mdef, sent->id.pid.cipid);
rssid = dict2pid_rssid(d2p, sent->id.pid.cipid,
dict_second_last_phone(dict, wid));
sent->id.pid.ssid = rssid->ssid[rssid->cimap[rc]];
oe_assert(sent->id.pid.ssid != BAD_SSID);
sent->start = went->start;
sent->duration = went->duration;
sent->parent = i;
}
/* Update lc. Could just use sent->id.pid.cipid here but that
* seems needlessly obscure. */
lc = dict_last_phone(dict, wid);
}
/* For each senone sequence, expand to senones. (we could do this
* nested above but this makes it more clear and easier to
* refactor) */
for (i = 0; i < al->sseq.n_ent; ++i) {
ps_alignment_entry_t *pent = al->sseq.seq + i;
ps_alignment_entry_t *sent;
int j;
for (j = 0; j < bin_mdef_n_emit_state(mdef); ++j) {
if ((sent = ps_alignment_vector_grow_one(&al->state)) == NULL) {
E_ERROR("Failed to add state entry!\n");
return -1;
}
sent->id.senid = bin_mdef_sseq2sen(mdef, pent->id.pid.ssid, j);
oe_assert(sent->id.senid != BAD_SENID);
sent->start = pent->start;
sent->duration = pent->duration;
sent->parent = i;
if (j == 0)
pent->child = (uint16)(sent - al->state.seq);
}
}
return 0;
}
/**
* Build HMM network for one utterance of fwdflat search.
*/
static void
build_fwdflat_chan(ngram_search_t *ngs)
{
int32 i, wid, p;
root_chan_t *rhmm;
chan_t *hmm, *prevhmm;
dict_t *dict;
dict2pid_t *d2p;
dict = ps_search_dict(ngs);
d2p = ps_search_dict2pid(ngs);
/* Build word HMMs for each word in the lattice. */
for (i = 0; ngs->fwdflat_wordlist[i] >= 0; i++) {
wid = ngs->fwdflat_wordlist[i];
/* Single-phone words are permanently allocated */
if (dict_is_single_phone(dict, wid))
continue;
assert(ngs->word_chan[wid] == NULL);
/* Multiplex root HMM for first phone (one root per word, flat
* lexicon). diphone is irrelevant here, for the time being,
* at least. */
rhmm = listelem_malloc(ngs->root_chan_alloc);
rhmm->ci2phone = dict_second_phone(dict, wid);
rhmm->ciphone = dict_first_phone(dict, wid);
rhmm->next = NULL;
hmm_init(ngs->hmmctx, &rhmm->hmm, TRUE,
bin_mdef_pid2ssid(ps_search_acmod(ngs)->mdef, rhmm->ciphone),
bin_mdef_pid2tmatid(ps_search_acmod(ngs)->mdef, rhmm->ciphone));
/* HMMs for word-internal phones */
prevhmm = NULL;
for (p = 1; p < dict_pronlen(dict, wid) - 1; p++) {
hmm = listelem_malloc(ngs->chan_alloc);
hmm->ciphone = dict_pron(dict, wid, p);
hmm->info.rc_id = (p == dict_pronlen(dict, wid) - 1) ? 0 : -1;
hmm->next = NULL;
hmm_init(ngs->hmmctx, &hmm->hmm, FALSE,
dict2pid_internal(d2p,wid,p),
bin_mdef_pid2tmatid(ps_search_acmod(ngs)->mdef, hmm->ciphone));
if (prevhmm)
prevhmm->next = hmm;
else
rhmm->next = hmm;
prevhmm = hmm;
}
/* Right-context phones */
ngram_search_alloc_all_rc(ngs, wid);
/* Link in just allocated right-context phones */
if (prevhmm)
prevhmm->next = ngs->word_chan[wid];
else
rhmm->next = ngs->word_chan[wid];
ngs->word_chan[wid] = (chan_t *) rhmm;
}
}
/* Update kb w/ new dictionary and new LM.
* assumes: single-LM kbcore (before & after)
* requires: updating kbcore
* Lucian Galescu, 08/11/2005
*/
void kb_update_lm(kb_t *kb, char *dictfile, char *lmfile)
{
kbcore_t *kbcore;
mdef_t *mdef;
dict_t *dict;
dict2pid_t *d2p;
lm_t *lm;
s3cipid_t ci;
s3wid_t w;
int32 i, n, n_lc;
wordprob_t *wp;
s3cipid_t *lc;
bitvec_t lc_active;
/*** clean up ***/
vithist_t *vithist = kb->vithist;
if (kb->fillertree)
ckd_free ((void *)kb->fillertree);
if (kb->hmm_hist)
ckd_free ((void *)kb->hmm_hist);
/* vithist */
if (vithist) {
ckd_free ((void *) vithist->entry);
ckd_free ((void *) vithist->frame_start);
ckd_free ((void *) vithist->bestscore);
ckd_free ((void *) vithist->bestvh);
ckd_free ((void *) vithist->lms2vh_root);
ckd_free ((void *) kb->vithist);
}
/*** re-initialize ***/
kb->kbcore = kbcore_update_lm(kb->kbcore,
dictfile,
cmd_ln_str("-fdict"),
"", /* Hack!! Hardwired constant for -compsep argument */
lmfile,
cmd_ln_str("-fillpen"),
cmd_ln_float32("-silprob"),
cmd_ln_float32("-fillprob"),
cmd_ln_float32("-lw"),
cmd_ln_float32("-wip"),
cmd_ln_float32("-uw"));
if(kb->kbcore==NULL){
E_FATAL("Updating kbcore failed\n");
}
kbcore = kb->kbcore;
mdef = kbcore_mdef(kbcore);
dict = kbcore_dict(kbcore);
lm = kbcore_lm(kbcore);
d2p = kbcore_dict2pid(kbcore);
if (NOT_S3WID(dict_startwid(dict)) || NOT_S3WID(dict_finishwid(dict)))
E_FATAL("%s or %s not in dictionary\n", S3_START_WORD, S3_FINISH_WORD);
if(lm){
if (NOT_S3LMWID(lm_startwid(lm)) || NOT_S3LMWID(lm_finishwid(lm)))
E_FATAL("%s or %s not in LM\n", S3_START_WORD, S3_FINISH_WORD);
}
/*
* Unlink <s> and </s> between dictionary and LM, to prevent their
* recognition. They are merely dummy words (anchors) at the beginning
* and end of each utterance.
*/
if(lm){
lm_lmwid2dictwid(lm, lm_startwid(lm)) = BAD_S3WID;
lm_lmwid2dictwid(lm, lm_finishwid(lm)) = BAD_S3WID;
for (w = dict_startwid(dict); IS_S3WID(w); w = dict_nextalt(dict, w))
kbcore->dict2lmwid[w] = BAD_S3LMWID;
for (w = dict_finishwid(dict); IS_S3WID(w); w = dict_nextalt(dict, w))
kbcore->dict2lmwid[w] = BAD_S3LMWID;
}
/* Build set of all possible left contexts */
lc = (s3cipid_t *) ckd_calloc (mdef_n_ciphone(mdef) + 1, sizeof(s3cipid_t));
lc_active = bitvec_alloc (mdef_n_ciphone (mdef));
for (w = 0; w < dict_size (dict); w++) {
ci = dict_pron (dict, w, dict_pronlen(dict, w) - 1);
if (! mdef_is_fillerphone (mdef, (int)ci))
bitvec_set (lc_active, ci);
}
ci = mdef_silphone(mdef);
bitvec_set (lc_active, ci);
for (ci = 0, n_lc = 0; ci < mdef_n_ciphone(mdef); ci++) {
if (bitvec_is_set (lc_active, ci))
lc[n_lc++] = ci;
}
lc[n_lc] = BAD_S3CIPID;
E_INFO("Building lextrees\n");
/* Get the number of lexical tree*/
kb->n_lextree = cmd_ln_int32 ("-Nlextree");
if (kb->n_lextree < 1) {
E_ERROR("No. of ugtrees specified: %d; will instantiate 1 ugtree\n",
kb->n_lextree);
kb->n_lextree = 1;
}
/* ARCHAN: This code was rearranged in s3.4 implementation of dynamic LM */
/* Build active word list */
wp = (wordprob_t *) ckd_calloc (dict_size(dict), sizeof(wordprob_t));
if (lm) {
E_INFO("Creating Unigram Table\n");
n=0;
n = lm_ug_wordprob (lm, dict, MAX_NEG_INT32, wp);
E_INFO("Size of word table after unigram + words in class: %d\n",n);
if (n < 1)
E_FATAL("%d active words\n", n);
n = wid_wordprob2alt (dict, wp, n); /* Add alternative pronunciations */
/* Retain or remove unigram probs from lextree, depending on option */
if (cmd_ln_int32("-treeugprob") == 0) {
for (i = 0; i < n; i++)
wp[i].prob = -1; /* Flatten all initial probabilities */
}
/* Create the desired no. of unigram lextrees */
kb->ugtree = (lextree_t **) ckd_calloc (kb->n_lextree, sizeof(lextree_t *));
for (i = 0; i < kb->n_lextree; i++) {
kb->ugtree[i] = lextree_build (kbcore, wp, n, lc);
lextree_type (kb->ugtree[i]) = 0;
}
E_INFO("Lextrees(%d), %d nodes(ug)\n",
kb->n_lextree, lextree_n_node(kb->ugtree[0]));
}
/* Create filler lextrees */
/* ARCHAN : only one filler tree is supposed to be build even for dynamic LMs */
n = 0;
for (i = dict_filler_start(dict); i <= dict_filler_end(dict); i++) {
if (dict_filler_word(dict, i)) {
wp[n].wid = i;
wp[n].prob = fillpen (kbcore->fillpen, i);
n++;
}
}
kb->fillertree = (lextree_t **)ckd_calloc(kb->n_lextree,sizeof(lextree_t*));
for (i = 0; i < kb->n_lextree; i++) {
kb->fillertree[i] = lextree_build (kbcore, wp, n, NULL);
lextree_type (kb->fillertree[i]) = -1;
}
ckd_free ((void *) wp);
ckd_free ((void *) lc);
bitvec_free (lc_active);
E_INFO("Lextrees(%d), %d nodes(filler)\n",
kb->n_lextree,
lextree_n_node(kb->fillertree[0]));
if (cmd_ln_int32("-lextreedump")) {
for (i = 0; i < kb->n_lextree; i++) {
fprintf (stderr, "UGTREE %d\n", i);
lextree_dump (kb->ugtree[i], dict, stderr);
}
for (i = 0; i < kb->n_lextree; i++) {
fprintf (stderr, "FILLERTREE %d\n", i);
lextree_dump (kb->fillertree[i], dict, stderr);
}
fflush (stderr);
}
kb->ascr = ascr_init (mgau_n_mgau(kbcore_mgau(kbcore)),
kbcore->dict2pid->n_comstate);
kb->vithist = vithist_init(kbcore, kb->beam->word, cmd_ln_int32("-bghist"));
kb->hmm_hist_binsize = cmd_ln_int32("-hmmhistbinsize");
n = ((kb->ugtree[0]->n_node) + (kb->fillertree[0]->n_node)) * kb->n_lextree;
n /= kb->hmm_hist_binsize;
kb->hmm_hist_bins = n+1;
kb->hmm_hist = (int32 *) ckd_calloc (n+1, sizeof(int32)); /* Really no need for +1 */
}
