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+/* ====================================================================
+ * 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 work was supported in part by funding from the Defense Advanced
+ * Research Projects Agency and the National Science Foundation of the
+ * United States of America, and the CMU Sphinx Speech Consortium.
+ *
+ * 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.
+ *
+ * ====================================================================
+ *
+ */
+/*
+ * tmat.h
+ *
+ * **********************************************
+ * CMU ARPA Speech Project
+ *
+ * Copyright (c) 1997 Carnegie Mellon University.
+ * ALL RIGHTS RESERVED.
+ * **********************************************
+ *
+ * HISTORY
+ * $Log: tmat.h,v $
+ * Revision 1.1.1.1 2006/05/23 18:45:03 dhuggins
+ * re-importation
+ *
+ * Revision 1.1 2005/09/29 21:51:19 dhuggins
+ * Add support for Sphinx3 tmat files. Amazingly enough, it Just Works
+ * (but it isn't terribly robust)
+ *
+ * Revision 1.9 2005/06/21 19:23:35 arthchan2003
+ * 1, Fixed doxygen documentation. 2, Added $ keyword.
+ *
+ * Revision 1.6 2005/06/13 04:02:56 archan
+ * Fixed most doxygen-style documentation under libs3decoder.
+ *
+ * Revision 1.5 2005/05/03 04:09:09 archan
+ * Implemented the heart of word copy search. For every ci-phone, every word end, a tree will be allocated to preserve its pathscore. This is different from 3.5 or below, only the best score for a particular ci-phone, regardless of the word-ends will be preserved at every frame. The graph propagation will not collect unused word tree at this point. srch_WST_propagate_wd_lv2 is also as the most stupid in the century. But well, after all, everything needs a start. I will then really get the results from the search and see how it looks.
+ *
+ * Revision 1.4 2005/04/21 23:50:26 archan
+ * Some more refactoring on the how reporting of structures inside kbcore_t is done, it is now 50% nice. Also added class-based LM test case into test-decode.sh.in. At this moment, everything in search mode 5 is already done. It is time to test the idea whether the search can really be used.
+ *
+ * Revision 1.3 2005/03/30 01:22:47 archan
+ * Fixed mistakes in last updates. Add
+ *
+ *
+ * 20.Apr.2001 RAH (rhoughton@mediasite.com, ricky.houghton@cs.cmu.edu)
+ * Added tmat_free to free allocated memory
+ *
+ * 29-Feb-2000 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University.
+ * Added tmat_chk_1skip(), and made tmat_chk_uppertri() public.
+ *
+ * 10-Dec-1999 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University.
+ * Added tmat_dump().
+ *
+ * 11-Mar-97 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University.
+ * Started based on original S3 implementation.
+ */
+
+
+#ifndef _S3_TMAT_H_
+#define _S3_TMAT_H_
+
+/* System headers. */
+#include <stdio.h>
+
+/* SphinxBase headers. */
+#include <sphinxbase/logmath.h>
+
+/** \file tmat.h
+ * \brief Transition matrix data structure.
+ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \struct tmat_t
+ * \brief Transition matrix data structure. All phone HMMs are assumed to have the same
+ * topology.
+ */
+typedef struct {
+ uint8 ***tp; /**< The transition matrices; kept in the same scale as acoustic scores;
+ tp[tmatid][from-state][to-state] */
+ int16 n_tmat; /**< Number matrices */
+ int16 n_state; /**< Number source states in matrix (only the emitting states);
+ Number destination states = n_state+1, it includes the exit state */
+} tmat_t;
+
+
+/** Initialize transition matrix */
+
+tmat_t *tmat_init (char const *tmatfile,/**< In: input file */
+ logmath_t *lmath, /**< In: log math parameters */
+ float64 tpfloor, /**< In: floor value for each non-zero transition probability */
+ int32 breport /**< In: whether reporting the process of tmat_t */
+ );
+
+
+
+/** Dumping the transition matrix for debugging */
+
+void tmat_dump (tmat_t *tmat, /**< In: transition matrix */
+ FILE *fp /**< In: file pointer */
+ );
+
+
+/**
+ * RAH, add code to remove memory allocated by tmat_init
+ */
+
+void tmat_free (tmat_t *t /**< In: transition matrix */
+ );
+
+/**
+ * Report the detail of the transition matrix structure.
+ */
+void tmat_report(tmat_t *t /**< In: transition matrix*/
+ );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif