void
ps_search_deinit(ps_search_t *search)
{
/* FIXME: We will have refcounting on acmod, config, etc, at which
* point we will free them here too. */
dict_free(search->dict);
dict2pid_free(search->d2p);
ckd_free(search->hyp_str);
ps_lattice_free(search->dag);
}
int
ps_start_utt(ps_decoder_t *ps)
{
int rv;
char uttid[16];
if (ps->search == NULL) {
E_ERROR("No search module is selected, did you forget to "
"specify a language model or grammar?\n");
return -1;
}
ptmr_reset(&ps->perf);
ptmr_start(&ps->perf);
sprintf(uttid, "%09u", ps->uttno);
++ps->uttno;
/* Remove any residual word lattice and hypothesis. */
ps_lattice_free(ps->search->dag);
ps->search->dag = NULL;
ps->search->last_link = NULL;
ps->search->post = 0;
ckd_free(ps->search->hyp_str);
ps->search->hyp_str = NULL;
if ((rv = acmod_start_utt(ps->acmod)) < 0)
return rv;
/* Start logging features and audio if requested. */
if (ps->mfclogdir) {
char *logfn = string_join(ps->mfclogdir, "/",
uttid, ".mfc", NULL);
FILE *mfcfh;
E_INFO("Writing MFCC log file: %s\n", logfn);
if ((mfcfh = fopen(logfn, "wb")) == NULL) {
E_ERROR_SYSTEM("Failed to open MFCC log file %s", logfn);
ckd_free(logfn);
return -1;
}
ckd_free(logfn);
acmod_set_mfcfh(ps->acmod, mfcfh);
}
if (ps->rawlogdir) {
char *logfn = string_join(ps->rawlogdir, "/",
uttid, ".raw", NULL);
FILE *rawfh;
E_INFO("Writing raw audio log file: %s\n", logfn);
if ((rawfh = fopen(logfn, "wb")) == NULL) {
E_ERROR_SYSTEM("Failed to open raw audio log file %s", logfn);
ckd_free(logfn);
return -1;
}
ckd_free(logfn);
acmod_set_rawfh(ps->acmod, rawfh);
}
if (ps->senlogdir) {
char *logfn = string_join(ps->senlogdir, "/",
uttid, ".sen", NULL);
FILE *senfh;
E_INFO("Writing senone score log file: %s\n", logfn);
if ((senfh = fopen(logfn, "wb")) == NULL) {
E_ERROR_SYSTEM("Failed to open senone score log file %s", logfn);
ckd_free(logfn);
return -1;
}
ckd_free(logfn);
acmod_set_senfh(ps->acmod, senfh);
}
/* Start auxiliary phone loop search. */
if (ps->phone_loop)
ps_search_start(ps->phone_loop);
return ps_search_start(ps->search);
}
int
main(int argc, char *argv[])
{
ps_decoder_t *ps;
cmd_ln_t *config;
acmod_t *acmod;
ngram_search_t *ngs;
ps_lattice_t *dag;
clock_t c;
int i;
TEST_ASSERT(config =
cmd_ln_init(NULL, ps_args(), TRUE,
"-hmm", MODELDIR "/en-us/en-us",
"-lm", MODELDIR "/en-us/en-us.lm.bin",
"-dict", MODELDIR "/en-us/cmudict-en-us.dict",
"-fwdtree", "yes",
"-fwdflat", "no",
"-bestpath", "yes",
"-samprate", "16000", NULL));
TEST_ASSERT(ps = ps_init(config));
ngs = (ngram_search_t *)ps->search;
acmod = ps->acmod;
acmod_set_grow(ps->acmod, TRUE);
setbuf(stdout, NULL);
c = clock();
for (i = 0; i < 5; ++i) {
FILE *rawfh;
int16 buf[2048];
size_t nread;
int16 const *bptr;
int nfr;
ps_astar_t *nbest;
ps_latpath_t *path;
char *besthyp;
const char *astar_besthyp = NULL;
int32 astar_hyp_score;
int i;
/* PocketSphinx API would do this for us but we have to do it manually here. */
ps_lattice_free(ps->search->dag);
ps->search->dag = NULL;
TEST_ASSERT(rawfh = fopen(DATADIR "/goforward.raw", "rb"));
TEST_EQUAL(0, acmod_start_utt(acmod));
ngram_fwdtree_start(ngs);
while (!feof(rawfh)) {
nread = fread(buf, sizeof(*buf), 2048, rawfh);
bptr = buf;
while ((nfr = acmod_process_raw(acmod, &bptr, &nread, FALSE)) > 0) {
while (acmod->n_feat_frame > 0) {
ngram_fwdtree_search(ngs, acmod->output_frame);
acmod_advance(acmod);
}
}
}
ngram_fwdtree_finish(ngs);
printf("FWDTREE: %s\n",
ngram_search_bp_hyp(ngs, ngram_search_find_exit(ngs, -1, NULL)));
TEST_ASSERT(acmod_end_utt(acmod) >= 0);
fclose(rawfh);
dag = ngram_search_lattice(ps->search);
if (dag == NULL) {
E_ERROR("Failed to build DAG!\n");
return 1;
}
besthyp = ckd_salloc
(ps_lattice_hyp(dag, ps_lattice_bestpath
(dag, ngs->lmset, 9.5/6.5, 1.0)));
printf("BESTPATH: %s\n", besthyp);
TEST_ASSERT(nbest = ps_astar_start(dag, ngs->lmset, 9.5/6.5, 0, -1, -1, -1));
i = 0;
astar_hyp_score = WORST_SCORE;
while ((path = ps_astar_next(nbest))) {
if (i < 10)
printf("NBEST %d: %s (%d)\n", i, ps_astar_hyp(nbest, path), path->score);
if (path->score > astar_hyp_score) {
astar_hyp_score = path->score;
astar_besthyp = ps_astar_hyp(nbest, path);
}
i++;
}
TEST_EQUAL(0, strcmp(besthyp, astar_besthyp));
ps_astar_finish(nbest);
ckd_free(besthyp);
}
printf("%s\n", ngram_search_bp_hyp(ngs, ngram_search_find_exit(ngs, -1, NULL)));
TEST_EQUAL(0, strcmp("go forward ten meters",
ngram_search_bp_hyp(ngs, ngram_search_find_exit(ngs, -1, NULL))));
c = clock() - c;
printf("5 * fwdtree + bestpath + N-best search in %.2f sec\n",
(double)c / CLOCKS_PER_SEC);
ps_free(ps);
cmd_ln_free_r(config);
return 0;
}
