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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 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__
/* SphinxBase headesr. */
#include <sphinxbase/fe.h>
#include <sphinxbase/logmath.h>
#include <sphinxbase/mmio.h>
/* Local headers. */
#include "acmod.h"
#include "hmm.h"
#include "bin_mdef.h"
#include "ms_gauden.h"
typedef struct vqFeature_s vqFeature_t;
typedef struct s2_semi_mgau_s s2_semi_mgau_t;
struct s2_semi_mgau_s {
ps_mgau_t base; /**< base structure. */
cmd_ln_t *config; /* configuration parameters */
gauden_t *g; /* Set of Gaussians (pointers below point in here and will go away soon) */
uint8 ***mixw; /* mixture weight distributions */
mmio_file_t *sendump_mmap;/* memory map for mixw (or NULL if not mmap) */
uint8 *mixw_cb; /* mixture weight codebook, if any (assume it contains 16 values) */
int32 n_sen; /* Number of senones */
uint8 *topn_beam; /* Beam for determining per-frame top-N densities */
int16 max_topn;
int16 ds_ratio;
vqFeature_t ***topn_hist; /**< Top-N scores and codewords for past frames. */
uint8 **topn_hist_n; /**< Variable top-N for past frames. */
vqFeature_t **f; /**< Topn-N for currently scoring frame. */
int n_topn_hist; /**< Number of past frames tracked. */
/* Log-add table for compressed values. */
logmath_t *lmath_8b;
/* Log-add object for reloading means/variances. */
logmath_t *lmath;
};
ps_mgau_t *s2_semi_mgau_init(acmod_t *acmod);
void s2_semi_mgau_free(ps_mgau_t *s);
int s2_semi_mgau_frame_eval(ps_mgau_t *s,
int16 *senone_scores,
uint8 *senone_active,
int32 n_senone_active,
mfcc_t **featbuf,
int32 frame,
int32 compallsen);
int s2_semi_mgau_mllr_transform(ps_mgau_t *s,
ps_mllr_t *mllr);
#endif /* __S2_SEMI_MGAU_H__ */
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