ngram_model_t * ps_update_lmset(ps_decoder_t *ps, ngram_model_t *lmset) { ngram_search_t *ngs; ps_search_t *search; /* Look for N-Gram search. */ search = ps_find_search(ps, "ngram"); if (search == NULL) { /* Initialize N-Gram search. */ search = ngram_search_init(ps->config, ps->acmod, ps->dict, ps->d2p); if (search == NULL) return NULL; search->pls = ps->phone_loop; ps->searches = glist_add_ptr(ps->searches, search); ngs = (ngram_search_t *)search; } else { ngs = (ngram_search_t *)search; /* Free any previous lmset if this is a new one. */ if (ngs->lmset != NULL && ngs->lmset != lmset) ngram_model_free(ngs->lmset); ngs->lmset = lmset; /* Tell N-Gram search to update its view of the world. */ if (ps_search_reinit(search, ps->dict, ps->d2p) < 0) return NULL; } ps->search = search; return ngs->lmset; }
int ps_set_lm(ps_decoder_t *ps, const char *name, ngram_model_t *lm) { ps_search_t *search; search = ngram_search_init(lm, ps->config, ps->acmod, ps->dict, ps->d2p); return set_search_internal(ps, name, search); }
int ps_reinit(ps_decoder_t *ps, cmd_ln_t *config) { char const *lmfile, *lmctl = NULL; if (config && config != ps->config) { cmd_ln_free_r(ps->config); ps->config = config; } #ifndef _WIN32_WCE /* Set up logging. */ if (cmd_ln_str_r(ps->config, "-logfn")) err_set_logfile(cmd_ln_str_r(ps->config, "-logfn")); #endif err_set_debug_level(cmd_ln_int32_r(ps->config, "-debug")); ps->mfclogdir = cmd_ln_str_r(ps->config, "-mfclogdir"); ps->rawlogdir = cmd_ln_str_r(ps->config, "-rawlogdir"); /* Fill in some default arguments. */ ps_init_defaults(ps); /* Free old searches (do this before other reinit) */ ps_free_searches(ps); /* Free old acmod. */ acmod_free(ps->acmod); ps->acmod = NULL; /* Free old dictionary (must be done after the two things above) */ dict_free(ps->dict); ps->dict = NULL; /* Logmath computation (used in acmod and search) */ if (ps->lmath == NULL || (logmath_get_base(ps->lmath) != (float64)cmd_ln_float32_r(ps->config, "-logbase"))) { if (ps->lmath) logmath_free(ps->lmath); ps->lmath = logmath_init ((float64)cmd_ln_float32_r(ps->config, "-logbase"), 0, cmd_ln_boolean_r(ps->config, "-bestpath")); } /* Acoustic model (this is basically everything that * uttproc.c, senscr.c, and others used to do) */ if ((ps->acmod = acmod_init(ps->config, ps->lmath, NULL, NULL)) == NULL) return -1; /* Make the acmod's feature buffer growable if we are doing two-pass search. */ if (cmd_ln_boolean_r(ps->config, "-fwdflat") && cmd_ln_boolean_r(ps->config, "-fwdtree")) acmod_set_grow(ps->acmod, TRUE); if ((ps->pl_window = cmd_ln_int32_r(ps->config, "-pl_window"))) { /* Initialize an auxiliary phone loop search, which will run in * "parallel" with FSG or N-Gram search. */ if ((ps->phone_loop = phone_loop_search_init(ps->config, ps->acmod, ps->dict)) == NULL) return -1; ps->searches = glist_add_ptr(ps->searches, ps->phone_loop); } /* Dictionary and triphone mappings (depends on acmod). */ /* FIXME: pass config, change arguments, implement LTS, etc. */ if ((ps->dict = dict_init(ps->config, ps->acmod->mdef)) == NULL) return -1; /* Determine whether we are starting out in FSG or N-Gram search mode. */ if (cmd_ln_str_r(ps->config, "-fsg") || cmd_ln_str_r(ps->config, "-jsgf")) { ps_search_t *fsgs; if ((ps->d2p = dict2pid_build(ps->acmod->mdef, ps->dict)) == NULL) return -1; if ((fsgs = fsg_search_init(ps->config, ps->acmod, ps->dict, ps->d2p)) == NULL) return -1; fsgs->pls = ps->phone_loop; ps->searches = glist_add_ptr(ps->searches, fsgs); ps->search = fsgs; } else if ((lmfile = cmd_ln_str_r(ps->config, "-lm")) || (lmctl = cmd_ln_str_r(ps->config, "-lmctl"))) { ps_search_t *ngs; if ((ps->d2p = dict2pid_build(ps->acmod->mdef, ps->dict)) == NULL) return -1; if ((ngs = ngram_search_init(ps->config, ps->acmod, ps->dict, ps->d2p)) == NULL) return -1; ngs->pls = ps->phone_loop; ps->searches = glist_add_ptr(ps->searches, ngs); ps->search = ngs; } /* Otherwise, we will initialize the search whenever the user * decides to load an FSG or a language model. */ else { if ((ps->d2p = dict2pid_build(ps->acmod->mdef, ps->dict)) == NULL) return -1; } /* Initialize performance timer. */ ps->perf.name = "decode"; ptmr_init(&ps->perf); return 0; }