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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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+/* -*- c-basic-offset:4; indent-tabs-mode: nil -*- */
+/* ====================================================================
+ * Copyright (c) 1999-2004 Carnegie Mellon University. All rights
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND
+ * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
+ * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * ====================================================================
+ *
+ */
+
+/*
+ * fsg_search_internal.h -- Search structures for FSG decoding.
+ */
+
+
+#ifndef __S2_FSG_SEARCH_H__
+#define __S2_FSG_SEARCH_H__
+
+
+/* SphinxBase headers. */
+#include <sphinxbase/glist.h>
+#include <sphinxbase/cmd_ln.h>
+#include <sphinxbase/fsg_model.h>
+
+/* Local headers. */
+#include "pocketsphinx_internal.h"
+#include "hmm.h"
+#include "fsg_history.h"
+#include "fsg_lextree.h"
+
+/**
+ * Segmentation "iterator" for FSG history.
+ */
+typedef struct fsg_seg_s {
+ ps_seg_t base; /**< Base structure. */
+ fsg_hist_entry_t **hist; /**< Sequence of history entries. */
+ int16 n_hist; /**< Number of history entries. */
+ int16 cur; /**< Current position in hist. */
+} fsg_seg_t;
+
+/**
+ * Implementation of FSG search (and "FSG set") structure.
+ */
+typedef struct fsg_search_s {
+ ps_search_t base;
+
+ hmm_context_t *hmmctx; /**< HMM context. */
+ char const *arpafile;
+ cmd_ln_t *config;
+ fsg_model_t *fsg; /**< FSG model */
+ struct fsg_lextree_s *lextree;/**< Lextree structure for the currently
+ active FSG */
+ struct fsg_history_s *history;/**< For storing the Viterbi search history */
+
+ glist_t pnode_active; /**< Those active in this frame */
+ glist_t pnode_active_next; /**< Those activated for the next frame */
+
+ int32 beam_orig; /**< Global pruning threshold */
+ int32 pbeam_orig; /**< Pruning threshold for phone transition */
+ int32 wbeam_orig; /**< Pruning threshold for word exit */
+ float32 beam_factor; /**< Dynamic/adaptive factor (<=1) applied to above
+ beams to determine actual effective beams.
+ For implementing absolute pruning. */
+ int32 beam, pbeam, wbeam; /**< Effective beams after applying beam_factor */
+ int32 lw, pip, wip; /**< Language weights */
+
+ frame_idx_t frame; /**< Current frame. */
+ uint8 final; /**< Decoding is finished for this utterance. */
+ uint8 bestpath; /**< Whether to run bestpath search
+ and confidence annotation at end. */
+ float32 ascale; /**< Acoustic score scale for posterior probabilities. */
+
+ int32 bestscore; /**< For beam pruning */
+ int32 bpidx_start; /**< First history entry index this frame */
+
+ int32 ascr, lscr; /**< Total acoustic and lm score for utt */
+
+ int32 n_hmm_eval; /**< Total HMMs evaluated this utt */
+ int32 n_sen_eval; /**< Total senones evaluated this utt */
+} fsg_search_t;
+
+/* Access macros */
+#define fsg_search_frame(s) ((s)->frame)
+
+/**
+ * Create, initialize and return a search module.
+ */
+ps_search_t *fsg_search_init(fsg_model_t *fsg,
+ cmd_ln_t *config,
+ acmod_t *acmod,
+ dict_t *dict,
+ dict2pid_t *d2p);
+
+/**
+ * Deallocate search structure.
+ */
+void fsg_search_free(ps_search_t *search);
+
+/**
+ * Update FSG search module for new or updated FSGs.
+ */
+int fsg_search_reinit(ps_search_t *fsgs, dict_t *dict, dict2pid_t *d2p);
+
+/**
+ * Prepare the FSG search structure for beginning decoding of the next
+ * utterance.
+ */
+int fsg_search_start(ps_search_t *search);
+
+/**
+ * Step one frame forward through the Viterbi search.
+ */
+int fsg_search_step(ps_search_t *search, int frame_idx);
+
+/**
+ * Windup and clean the FSG search structure after utterance.
+ */
+int fsg_search_finish(ps_search_t *search);
+
+/**
+ * Get hypothesis string from the FSG search.
+ */
+char const *fsg_search_hyp(ps_search_t *search, int32 *out_score, int32 *out_is_final);
+
+#endif