libjulius/include/julius/wchmm.h

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/*
 * Copyright (c) 1991-2007 Kawahara Lab., Kyoto University
 * Copyright (c) 2000-2005 Shikano Lab., Nara Institute of Science and Technology
 * Copyright (c) 2005-2007 Julius project team, Nagoya Institute of Technology
 * All rights reserved
 */

#ifndef __J_WORD_CONJ_HMM_H__
#define __J_WORD_CONJ_HMM_H__

//#define               MAXWCNSTEP  40000 ///< Number of states to be allocated at once

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;   
  WORD_ID       category;       
  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 {
  LOGPROB *probcache;
  WORD_ID *lastwcache;
  LOGPROB **iw_sc_cache;
  int iw_cache_num;
#ifdef HASH_CACHE_IW
  WORD_ID *iw_lw_cache; 
#endif
  
} LM_PROB_CACHE;

/*************************************************************************/
#define A_CELL2_ALLOC_STEP 4

typedef struct __A_CELL2__ {
  unsigned short n;
  int arc[A_CELL2_ALLOC_STEP];  
  LOGPROB a[A_CELL2_ALLOC_STEP]; 
  struct __A_CELL2__ *next;     
} A_CELL2;

typedef struct wchmm_state {
#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 */

  int scid;
} WCHMM_STATE;

typedef struct {
  int *out_from;
  int *out_from_next;
  LOGPROB *out_a;
  LOGPROB *out_a_next;
  int out_from_len;
} WCHMM_WORK;

typedef struct wchmm_info {
  int lmtype;                   
  int lmvar;                    
  boolean category_tree;        
  HTK_HMM_INFO *hmminfo;        
  NGRAM_INFO *ngram;            
  DFA_INFO *dfa;                
  WORD_INFO *winfo;             
  boolean ccd_flag;             
  int   maxwcn;                 
  int   n;                      
  WCHMM_STATE   *state;         
  LOGPROB *self_a;              
  LOGPROB *next_a;              
  A_CELL2 **ac;                 
  WORD_ID       *stend;         
  int   **offset;               
  int   *wordend;               
  int   startnum;               
  int   *startnode;             
  int   *wordbegin;             
  int   maxstartnum;            
  WORD_ID *start2wid;           
#ifdef UNIGRAM_FACTORING
  int   *start2isolate;         
  int   isolatenum;             
#endif
  LOGPROB       *wordend_a;     
#ifdef PASS1_IWCD
  unsigned char *outstyle;      
#endif
  /* 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
  BMALLOC_BASE *malloc_root;    
#ifdef PASS1_IWCD
  APATNODE *lcdset_category_root; 
#endif /* PASS1_IWCD */

  HMMWork *hmmwrk;              

  LM_PROB_CACHE lmcache;        

  WCHMM_WORK wrk;               

  int separated_word_count; 

  /* user-defined functions, used when this->lmvar == LM_NGRAM_USER */
  /* they are local copy from parent Recog instance */
  LOGPROB (*uni_prob_user)(WORD_INFO *, WORD_ID, LOGPROB); 

  LOGPROB (*bi_prob_user)(WORD_INFO *, WORD_ID, WORD_ID, LOGPROB); 

} WCHMM_INFO;

#endif /* __J_WORD_CONJ_HMM_H__ */

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