libsent/include/sent/adin.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 __SENT_ADIN__
#define __SENT_ADIN__

#include <sent/stddefs.h>
#include <sent/speech.h>

enum {
  SP_RAWFILE,                   
  SP_MIC,                       
  SP_ADINNET,                   
  SP_MFCFILE,                   
  SP_NETAUDIO,                  
  SP_STDIN                      
};

#define DEFAULT_WSTEP 1000

#ifdef HAVE_LIBSNDFILE
#define SUPPORTED_WAVEFILE_FORMAT "RAW(BE),WAV,AU,SND,NIST,ADPCM and more"
#else
#define SUPPORTED_WAVEFILE_FORMAT "RAW(BE),WAV"
#endif

#define ZMEANSAMPLES 48000

#define DS_RBSIZE       512     
#define DS_BUFSIZE      256     
#define DS_BUFSIZE_Y    512     

typedef struct {
  int decrate;                  
  int intrate;                  
  double hdn[DS_RBSIZE+1];      
  int hdn_len;          
  int delay;            
  double x[DS_BUFSIZE]; 
  double y[DS_BUFSIZE_Y];       
  double rb[DS_RBSIZE]; 
  int indx;             
  int bp;               
  int count;            
} DS_FILTER;
typedef struct {
  DS_FILTER *fir[3]; 
  double *buf[4]; 
  int buflen; 
} DS_BUFFER;

typedef struct {
  int trigger;          
  int length;           
  int offset;           
  int zero_cross;               
  int is_trig;          
  int sign;                     
  int top;                      
  int valid_len;                
  SP16 *data;           
  int *is_zc;           
  int level;            
} ZEROCROSS;

#define ZC_UNDEF 2                      
#define ZC_POSITIVE 1           
#define ZC_NEGATIVE -1          

/* adin/adin_mic_*.c */
boolean adin_mic_standby(int freq, void *arg);
boolean adin_mic_begin();
boolean adin_mic_end();
int adin_mic_read(SP16 *buf, int sampnum);
/* adin/adin_netaudio.c  and adin/adin_na.c */
boolean adin_netaudio_standby(int freq, void *arg);
boolean adin_netaudio_begin();
boolean adin_netaudio_end();
int adin_netaudio_read(SP16 *buf, int sampnum);
int NA_standby(int, char *);
void NA_start();
void NA_stop();
int NA_read(SP16 *buf, int sampnum);

/* adin/adin_file.c */
boolean adin_file_standby(int freq, void *arg);
boolean adin_file_begin();
int adin_file_read(SP16 *buf, int sampnum);
boolean adin_file_end();
boolean adin_stdin_standby(int freq, void *arg);
boolean adin_stdin_begin();
int adin_stdin_read(SP16 *buf, int sampnum);
char *adin_file_get_current_filename();

/* adin/adin_sndfile.c */
#ifdef HAVE_LIBSNDFILE
boolean adin_sndfile_standby(int freq, void *arg);
boolean adin_sndfile_begin();
int adin_sndfile_read(SP16 *buf, int sampnum);
boolean adin_sndfile_end();
char *adin_sndfile_get_current_filename();
#endif

/* adin/adin_tcpip.c */
boolean adin_tcpip_standby(int freq, void *arg);
boolean adin_tcpip_begin();
boolean adin_tcpip_end();
int adin_tcpip_read(SP16 *buf, int sampnum);
boolean adin_tcpip_send_pause();
boolean adin_tcpip_send_terminate();
boolean adin_tcpip_send_resume();

/* adin/zc-e.c */
void init_count_zc_e(ZEROCROSS *zc, int length);
void reset_count_zc_e(ZEROCROSS *zc, int c_trigger, int c_length, int c_offset);
void free_count_zc_e(ZEROCROSS *zc);
int count_zc_e(ZEROCROSS *zc, SP16 *buf,int step);
void zc_copy_buffer(ZEROCROSS *zc, SP16 *newbuf, int *len);

/* adin/zmean.c */
void zmean_reset();
void sub_zmean(SP16 *speech, int samplenum);

/* adin/ds48to16.c */
DS_BUFFER *ds48to16_new();
void ds48to16_free(DS_BUFFER *ds);
int ds48to16(SP16 *dst, SP16 *src, int srclen, int maxdstlen, DS_BUFFER *ds);

#endif /* __SENT_ADIN__ */

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