s2_semi_mgau.h

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/*
 * 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;     
    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; 
    uint8 **topn_hist_n;      
    vqFeature_t **f;          
    int n_topn_hist;          
 
    /* 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__ */