aboutsummaryrefslogtreecommitdiff
path: root/flite/flite.c
blob: 3fbefc1c77ee94c2788b3245b6dfb0489183531e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
/* -*- Mode: C -*- */
/*=============================================================================*\
 * File: flite.c
 * Author: Bryan Jurish <moocow@ling.uni-potsdam.de>
 * Description: speech synthesis for PD
 *
 *  PD interface to 'flite' C libraries.
 *
 *=============================================================================*/


#include <m_pd.h>
#include "mooPdUtils.h"

/* black magic */
#ifdef NT
#pragma warning( disable : 4244 )
#pragma warning( disable : 4305 )
#endif

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <math.h>
#include <flite/flite.h>
#include <flite/cst_wave.h>

/*--------------------------------------------------------------------
 * DEBUG
 *--------------------------------------------------------------------*/
//#define FLITE_DEBUG 1
//#undef FLITE_DEBUG


/*--------------------------------------------------------------------
 * Globals
 *--------------------------------------------------------------------*/
extern cst_voice *PDFLITE_REGISTER_VOICE();
static cst_voice *voice;

#define DEFAULT_BUFSIZE 256
#define DEFAULT_BUFSTEP 256

/*=====================================================================
 * Structures and Types
 *=====================================================================*/

static const char *flite_description =
  "flite: Text-to-Speech external v" PACKAGE_VERSION " by Bryan Jurish\n"
  "flite: compiled on " PDFLITE_COMPILED_ON " by " PDFLITE_COMPILED_BY "\n"
  ;
//static char *flite_acknowledge = "flite: based on code by ";
//static char *flite_version = "flite: PD external v%s by Bryan Jurish";



/*---------------------------------------------------------------------
 * flite
 *---------------------------------------------------------------------*/
static t_class *flite_class;
typedef struct _flite
{
  t_object x_obj;                    /* black magic (probably inheritance-related) */
  t_symbol *x_arrayname;             /* arrayname (from '_tabwrite' code in $PD_SRC/d_array.c) */
  char     *textbuf;                 /* text buffer (hack) */
  int      bufsize;                  /* text buffer size */
} t_flite;


/*--------------------------------------------------------------------
 * flite_synth : synthesize current text-buffer
 *--------------------------------------------------------------------*/
void flite_synth(t_flite *x) {
  cst_wave *wave;
  int i,vecsize;
  t_garray *a;
  t_float *vec;

# ifdef FLITE_DEBUG
  post("flite: got message 'synth'");
# endif

  // -- sanity checks
  if (!(a = (t_garray *)pd_findbyclass(x->x_arrayname, garray_class)))
    error("flite: no such array '%s'", x->x_arrayname->s_name);
  if (!x->textbuf) {
    error("flite: attempt to synthesize empty text-buffer!");
    return;
  }

# ifdef FLITE_DEBUG
  post("flite: flite_text_to_wave()");
# endif
  wave = flite_text_to_wave(x->textbuf,voice);

  if (!wave) {
    error("flite: synthesis failed for text '%s'", x->textbuf);
    return;
  }

  // -- resample
# ifdef FLITE_DEBUG
  post("flite: cst_wave_resample()");
# endif
  cst_wave_resample(wave,sys_getsr());

  // -- resize & write to our array
# ifdef FLITE_DEBUG
  post("flite: garray_resize(%d)", wave->num_samples);
# endif

  garray_resize(a, wave->num_samples);
  if (!garray_getfloatarray(a, &vecsize, &vec))
    error("flite: bad template for write to array '%s'", x->x_arrayname->s_name);

# ifdef FLITE_DEBUG
  post("flite: ->write to garray loop<-");
# endif
  for (i = 0; i < wave->num_samples; i++) {
    *vec++ = wave->samples[i]/32767.0;
  }

  // -- outlet synth-done-bang
  outlet_bang(x->x_obj.ob_outlet);

  // -- cleanup
  delete_wave(wave);

  // -- redraw
  garray_redraw(a);
}

/*--------------------------------------------------------------------
 * flite_text : set text-buffer
 *--------------------------------------------------------------------*/
void flite_text(t_flite *x, MOO_UNUSED t_symbol *s, int argc, t_atom *argv) {
  int i, alen, buffered;
  t_symbol *asym;

  // -- allocate initial text-buffer if required
  if (x->textbuf == NULL) {
    x->bufsize = DEFAULT_BUFSIZE;
    x->textbuf = getbytes(x->bufsize);
  }
  if (x->textbuf == NULL) {
    error("flite: allocation failed for text buffer");
    x->bufsize = 0;
    return;
  }

  // -- convert args to strings
  buffered = 0;
  for (i = 0; i < argc; i++) {
    asym = atom_gensym(argv);
    alen = 1+strlen(asym->s_name);

    // -- reallocate if necessary
    while (buffered + alen > x->bufsize) {
      x->textbuf = resizebytes(x->textbuf,x->bufsize,x->bufsize+DEFAULT_BUFSTEP);
      x->bufsize = x->bufsize+DEFAULT_BUFSTEP;
      if (x->textbuf == NULL) {
	error("flite: allocation failed for text buffer");
	x->bufsize = 0;
	return;
      }
    }
    
    // -- append arg-string to text-buf
    if (i == 0) {
      strcpy(x->textbuf+buffered, asym->s_name);
      buffered += alen-1;
    } else {
      *(x->textbuf+buffered) = ' ';
      strcpy(x->textbuf+buffered+1, asym->s_name);
      buffered += alen;
    }
    
    // -- increment/decrement
    argv++;
  }

#ifdef FLITE_DEBUG
  post("flite_debug: got text='%s'", x->textbuf);
#endif
}


/*--------------------------------------------------------------------
 * flite_list : parse & synthesize text in one swell foop
 *--------------------------------------------------------------------*/
void flite_list(t_flite *x, t_symbol *s, int argc, t_atom *argv) {
  flite_text(x,s,argc,argv);
  flite_synth(x);
}


/*--------------------------------------------------------------------
 * flite_set : set arrayname
 *--------------------------------------------------------------------*/
static void flite_set(t_flite *x, t_symbol *ary) {
#ifdef FLITE_DEBUG
  post("flite_set: called with arg='%s'", ary->s_name);
#endif
  x->x_arrayname = ary;
}


/*--------------------------------------------------------------------
 * constructor / destructor
 *--------------------------------------------------------------------*/
static void *flite_new(t_symbol *ary)
{
  t_flite *x;

  x = (t_flite *)pd_new(flite_class);

  // set initial arrayname
  x->x_arrayname = ary;

  // init textbuf
  x->textbuf = NULL;
  x->bufsize = 0;

  // create bang-on-done outlet
  outlet_new(&x->x_obj, &s_bang);

  return (void *)x;
}

static void flite_free(t_flite *x) {
  if (x->bufsize && x->textbuf != NULL) {
    freebytes(x->textbuf, x->bufsize);
    x->bufsize = 0;
  }
}

/*--------------------------------------------------------------------
 * setup
 *--------------------------------------------------------------------*/
void flite_setup(void) {
  post("");
  post(flite_description);
  post("");

  // --- setup synth
  flite_init();
  voice = PDFLITE_REGISTER_VOICE();

  // --- register class
  flite_class = class_new(gensym("flite"),
			  (t_newmethod)flite_new,  // newmethod
			  (t_method)flite_free,    // freemethod
			  sizeof(t_flite),         // size
			  CLASS_DEFAULT,           // flags
			  A_DEFSYM,                // arg1: table-name
			  0);

  // --- class methods
  class_addlist(flite_class, flite_list);
  class_addmethod(flite_class, (t_method)flite_set,   gensym("set"),   A_DEFSYM, 0);
  class_addmethod(flite_class, (t_method)flite_text,  gensym("text"),  A_GIMME, 0);
  class_addmethod(flite_class, (t_method)flite_synth, gensym("synth"), 0);

  // --- help patch
  //class_sethelpsymbol(flite_class, gensym("flite-help.pd")); /* breaks pd-extended help lookup */
}