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84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
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/* ====================================================================
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* Copyright (c) 2008 Carnegie Mellon University. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* This work was supported in part by funding from the Defense Advanced
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* Research Projects Agency and the National Science Foundation of the
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* United States of America, and the CMU Sphinx Speech Consortium.
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*
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* THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND
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* ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
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* NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ====================================================================
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*
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*/
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/**
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* @file ngram_search_fwdtree.h Lexicon tree based Viterbi search.
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*/
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#ifndef __NGRAM_SEARCH_FWDTREE_H__
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#define __NGRAM_SEARCH_FWDTREE_H__
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/* SphinxBase headers. */
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/* Local headers. */
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#include "ngram_search.h"
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/**
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* Initialize N-Gram search for fwdtree decoding.
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*/
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void ngram_fwdtree_init(ngram_search_t *ngs);
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/**
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* Release memory associated with fwdtree decoding.
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*/
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void ngram_fwdtree_deinit(ngram_search_t *ngs);
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/**
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* Rebuild search structures for updated language models.
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*/
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int ngram_fwdtree_reinit(ngram_search_t *ngs);
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/**
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* Start fwdtree decoding for an utterance.
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*/
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void ngram_fwdtree_start(ngram_search_t *ngs);
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/**
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* Search one frame forward in an utterance.
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*
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* @return Number of frames searched (either 0 or 1).
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*/
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int ngram_fwdtree_search(ngram_search_t *ngs, int frame_idx);
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/**
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* Finish fwdtree decoding for an utterance.
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*/
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void ngram_fwdtree_finish(ngram_search_t *ngs);
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#endif /* __NGRAM_SEARCH_FWDTREE_H__ */
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