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src/libpocketsphinx/ptm_mgau.h
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00001 /* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
00002 /* ====================================================================
00003  * Copyright (c) 1999-2010 Carnegie Mellon University.  All rights
00004  * reserved.
00005  *
00006  * Redistribution and use in source and binary forms, with or without
00007  * modification, are permitted provided that the following conditions
00008  * are met:
00009  *
00010  * 1. Redistributions of source code must retain the above copyright
00011  *    notice, this list of conditions and the following disclaimer. 
00012  *
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in
00015  *    the documentation and/or other materials provided with the
00016  *    distribution.
00017  *
00018  * This work was supported in part by funding from the Defense Advanced 
00019  * Research Projects Agency and the National Science Foundation of the 
00020  * United States of America, and the CMU Sphinx Speech Consortium.
00021  *
00022  * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND 
00023  * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
00024  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00025  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
00026  * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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00032  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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00035  *
00036  */
00042 #ifndef __PTM_MGAU_H__
00043 #define __PTM_MGAU_H__
00044 
00045 /* SphinxBase headesr. */
00046 #include <sphinxbase/fe.h>
00047 #include <sphinxbase/logmath.h>
00048 #include <sphinxbase/mmio.h>
00049 
00050 /* Local headers. */
00051 #include "acmod.h"
00052 #include "hmm.h"
00053 #include "bin_mdef.h"
00054 #include "ms_gauden.h"
00055 
00056 typedef struct ptm_mgau_s ptm_mgau_t;
00057 
00058 typedef struct ptm_topn_s {
00059     int32 cw;    
00060     int32 score; 
00061 } ptm_topn_t;
00062 
00063 typedef struct ptm_fast_eval_s {
00064     ptm_topn_t ***topn;     
00065     bitvec_t *mgau_active; 
00066 } ptm_fast_eval_t;
00067 
00068 struct ptm_mgau_s {
00069     ps_mgau_t base;     
00070     cmd_ln_t *config;   
00071     gauden_t *g;        
00072     int32 n_sen;       
00073     uint8 *sen2cb;     
00074     uint8 ***mixw;     
00075     mmio_file_t *sendump_mmap;/* Memory map for mixw (or NULL if not mmap) */
00076     uint8 *mixw_cb;    /* Mixture weight codebook, if any (assume it contains 16 values) */
00077     int16 max_topn;
00078     int16 ds_ratio;
00079 
00080     ptm_fast_eval_t *hist;   
00081     ptm_fast_eval_t *f;      
00082     int n_fast_hist;         
00084     /* Log-add table for compressed values. */
00085     logmath_t *lmath_8b;
00086     /* Log-add object for reloading means/variances. */
00087     logmath_t *lmath;
00088 };
00089 
00090 ps_mgau_t *ptm_mgau_init(acmod_t *acmod, bin_mdef_t *mdef);
00091 void ptm_mgau_free(ps_mgau_t *s);
00092 int ptm_mgau_frame_eval(ps_mgau_t *s,
00093                         int16 *senone_scores,
00094                         uint8 *senone_active,
00095                         int32 n_senone_active,
00096                         mfcc_t **featbuf,
00097                         int32 frame,
00098                         int32 compallsen);
00099 int ptm_mgau_mllr_transform(ps_mgau_t *s,
00100                             ps_mllr_t *mllr);
00101 
00102 
00103 #endif /*  __PTM_MGAU_H__ */