julius/wchmm.h

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/*
 * Copyright (c) 1991-2006 Kawahara Lab., Kyoto University
 * Copyright (c) 2000-2005 Shikano Lab., Nara Institute of Science and Technology
 * Copyright (c) 2005-2006 Julius project team, Nagoya Institute of Technology
 * All rights reserved
 */

#ifndef __SENT_WORD_CONJ_HMM__
#define __SENT_WORD_CONJ_HMM__

#define         MAXWCNSTEP  40000 


typedef struct s_cell {
  WORD_ID word;                 
  struct s_cell *next;          
} S_CELL;


#ifdef PASS1_IWCD

/* Cross-word triphone handling */

typedef struct {
  HMM_Logical  *hmm;            
  short         state_loc;      
  /* Context cache */
  boolean       last_is_lset;   
  union {
    HTK_HMM_State *state;       
    CD_State_Set  *lset;        
  } cache;
  WORD_ID       lastwid_cache;  
} RC_INFO;

typedef struct {
  HMM_Logical  *hmm;            
  short         state_loc;      
  /* Context cache */
  boolean       last_is_lset;   
#ifdef CATEGORY_TREE
  WORD_ID       category;       
#endif
  union {
    HTK_HMM_State *state;       
    CD_State_Set  *lset;        
  } cache;
  WORD_ID       lastwid_cache;  
} LRC_INFO;

/* For word tail phoneme, pseudo phone on the dictionary will be directly
   used as context-dependent state set */

typedef union {
  HTK_HMM_State *state;         
  CD_State_Set  *lset;          
  RC_INFO       *rset;          
  LRC_INFO      *lrset;         
} ACOUSTIC_SPEC;

typedef enum {
  AS_STATE,                     
  AS_LSET,                      
  AS_RSET,                      
  AS_LRSET                      
} AS_Style;
#endif
  
/*************************************************************************/

typedef struct wchmm_state {
  A_CELL        *ac;            
#ifdef PASS1_IWCD
  ACOUSTIC_SPEC out;            
  /* below has been moved to WCHMM (04/06/22 by ri) */
  /*unsigned char       outstyle;       output type (one of AS_Style) */
#else  /* ~PASS1_IWCD */
  HTK_HMM_State *out;           
#endif /* ~PASS1_IWCD */
#ifndef CATEGORY_TREE

  int scid;
#endif
} WCHMM_STATE;

typedef struct wchmm_info {
  HTK_HMM_INFO *hmminfo;        
#ifdef USE_NGRAM
  NGRAM_INFO *ngram;            
#endif
#ifdef USE_DFA
  DFA_INFO *dfa;                
#endif
  WORD_INFO *winfo;             
  int   maxwcn;                 
  int   n;                      
  WCHMM_STATE   *state;         
#ifndef MULTIPATH_VERSION
  WORD_ID       *ststart;       
#endif
  WORD_ID       *stend;         
  int   **offset;               
  int   *wordend;               
  int   startnum;               
  int   *startnode;             
#ifdef MULTIPATH_VERSION
  int   *wordbegin;             
  int   maxstartnum;            
# ifdef CATEGORY_TREE
  WORD_ID *start2wid;           
# endif
#endif /* MULTIPATH_VERSION */
#ifdef UNIGRAM_FACTORING
  int   *start2isolate;         
  int   isolatenum;             
#endif
#ifndef MULTIPATH_VERSION
  LOGPROB       *wordend_a;     
#endif
#ifdef PASS1_IWCD
  unsigned char *outstyle;      
#endif
#ifndef CATEGORY_TREE
  /* Successor lists on the tree are stored on sequencial list at @a sclist,
     and each node has index to the list */
  S_CELL **sclist;              
  int *sclist2node;             
  int   scnum;                  
#ifdef UNIGRAM_FACTORING
  LOGPROB *fscore;              
  int fsnum;                    
#endif
#endif
  BMALLOC_BASE *malloc_root;    
#ifdef PASS1_IWCD
#ifdef CATEGORY_TREE
  APATNODE *lcdset_category_root; 
#endif /* CATEGORY_TREE */
#endif /* PASS1_IWCD */
} WCHMM_INFO;

/*************************************************************************/
/* word trellis index (result of 1st pass) */

typedef struct __trellis_atom__ {
  LOGPROB backscore;            
#ifdef USE_NGRAM
  LOGPROB lscore;               
#endif
  WORD_ID wid;                  
  short begintime;              
  short endtime;                
#ifdef WORD_GRAPH
  boolean within_wordgraph;     
  boolean within_context;       
#endif
  struct __trellis_atom__ *last_tre; 
  struct __trellis_atom__ *next; 
} TRELLIS_ATOM;

typedef struct __backtrellis__ {
  int framelen;                 
  int *num;                     
  TRELLIS_ATOM ***rw;           
  TRELLIS_ATOM *list;           
  BMALLOC_BASE *root;           
} BACKTRELLIS;

#endif /* __SENT_WORD_CONJ_HMM__ */

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