/usr/include/sphinx3/s2_semi_mgau.h is in libs3decoder-dev 0.8-0ubuntu1.
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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.
*
* ====================================================================
*
*/
/*
* Interface for "semi-continuous vector quantization", a.k.a. Sphinx2
* fast GMM computation.
*/
#ifndef __S2_SEMI_MGAU_H__
#define __S2_SEMI_MGAU_H__
#include <logmath.h>
#include "s3types.h"
#include "fe.h"
#include "ascr.h"
#include "fast_algo_struct.h"
#include "kdtree.h"
#ifdef __cplusplus
extern "C" {
#endif
#if 0
/* Fool Emacs. */
}
#endif
#define S2_NUM_ALPHABET 256
#define S2_NUM_FEATURES 4
#define S2_MAX_TOPN 6 /* max number of TopN codewords */
typedef struct {
union {
int32 score;
int32 dist; /* distance to next closest vector */
} val;
int32 codeword; /* codeword (vector index) */
} vqFeature_t;
typedef vqFeature_t *vqFrame_t;
typedef float32 mean_t;
typedef float32 var_t;
#define GMMSUB(a,b) ((a)-(b))
#define GMMADD(a,b) ((a)+(b))
typedef struct s2_semi_mgau_s s2_semi_mgau_t;
struct s2_semi_mgau_s {
logmath_t *logmath;
int32 detArr[S2_NUM_FEATURES*S2_NUM_ALPHABET]; /* storage for det vectors */
int32 *dets[S2_NUM_FEATURES]; /* det values foreach feature */
mean_t *means[S2_NUM_FEATURES]; /* mean vectors foreach feature */
var_t *vars[S2_NUM_FEATURES]; /* var vectors foreach feature */
unsigned char **OPDF_8B[4]; /* mixture weights */
int32 topN;
int32 CdWdPDFMod;
kd_tree_t **kdtrees;
uint32 n_kdtrees;
uint32 kd_maxdepth;
int32 kd_maxbbi;
float64 dcep80msWeight;
int32 use20ms_diff_pow;
int32 num_frames;
int32 frame_ds_ratio;
vqFeature_t f[S2_NUM_FEATURES][S2_MAX_TOPN];
vqFeature_t lcfrm[S2_MAX_TOPN];
vqFeature_t ldfrm[S2_MAX_TOPN];
vqFeature_t lxfrm[S2_MAX_TOPN];
vqFeature_t vtmp;
};
s2_semi_mgau_t *s2_semi_mgau_init(const char *mean_path, const char *var_path,
float64 varfloor, const char *mixw_path,
float64 mixwfloor, int32 topn, logmath_t *logmath);
void s2_semi_mgau_free(s2_semi_mgau_t *s);
S3DECODER_EXPORT
int32 s2_semi_mgau_frame_eval(s2_semi_mgau_t *s,
ascr_t *ascr,
fast_gmm_t *fgmm,
mfcc_t **feat,
int32 frame);
int32 s2_semi_mgau_load_kdtree(s2_semi_mgau_t *s, const char *kdtree_path,
uint32 maxdepth, int32 maxbbi);
#ifdef __cplusplus
}
#endif
#endif /* __S2_SEMI_MGAU_H__ */
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