aboutsummaryrefslogtreecommitdiff
path: root/speex~/speexout~.c
blob: 793f7ec75b8e37f64ecb0b79dc0fa5db2009df5b (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
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
/* ------------------------ speexout~ ----------------------------------------- */
/*                                                                              */
/* Tilde object to send speex encoded data to a peer using speexin~.            */
/* Written by Yves Degoyon (ydegoyon@free.fr).                                  */
/* Tarballs and updates @ http://ydegoyon.free.fr                               */
/*                                                                              */
/* This program is free software; you can redistribute it and/or                */
/* modify it under the terms of the GNU General Public License                  */
/* as published by the Free Software Foundation; either version 2               */
/* of the License, or (at your option) any later version.                       */
/*                                                                              */
/* See file LICENSE for further informations on licensing terms.                */
/*                                                                              */
/* This program is distributed in the hope that it will be useful,              */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of               */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                */
/* GNU General Public License for more details.                                 */
/*                                                                              */
/* You should have received a copy of the GNU General Public License            */
/* along with this program; if not, write to the Free Software                  */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.  */
/*                                                                              */
/* Based on PureData by Miller Puckette and others.                             */
/* Uses the Speex codec which can                                               */
/* be found at http://speex.sourceforge.net                                     */
/*                                                                              */
/* "Western values mean nothing to us"                                          */
/* "She is beyond good and evil"                                                */
/* Pop Group --                                                                 */
/* ---------------------------------------------------------------------------- */



#ifdef NT
#pragma warning( disable : 4244 )
#pragma warning( disable : 4305 )
#endif

#include <sys/types.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <malloc.h>
#include <ctype.h>
#ifdef UNIX
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <time.h>
#include <sys/time.h>
#define SOCKET_ERROR -1
#else
#include <io.h>
#include <windows.h>
#include <winsock.h>
#include <windef.h>
#endif

#include <speex.h>        /* speex codec stuff */ 
#include <speex_bits.h>   /* speex codec stuff */ 

#include "m_pd.h"            /* standard pd stuff */

#define     IN_BUFFER_SIZE        65536
#define     OUT_BUFFER_SIZE       8192

// #define     DATADEBUG

#define     SPEEX_NB_MODE         0 /* audio data must be 8kHz */
#define     SPEEX_WB_MODE         1 /* audio data must be 16kHz */

#define     SPEEX_DEFAULT_QUALITY 5 /* default quality          */

static char   *speexout_version = "speexout~: speex voice quality streamer version 0.2, written by ydegoyon@free.fr";

static t_class *speexout_class;

typedef struct _speexout
{
    t_object x_obj;
    int x_samplerate;         /* pd sampling rate          */

        /* Speex stuff */
    SpeexBits x_bits;         /* bits packing structure    */
    void *x_encstate;         /* encoder state             */
    t_int x_framesize;        /* frame size                */
    t_int x_mode;             /* Narrow or Wide Band       */
    int x_quality;            /* encoding quality ( 0 to 10 ) */

        /* buffer stuff */
    unsigned short x_inp;     /* in position for buffer */
    unsigned short x_outp;    /* out position for buffer */
    t_int x_encsize;          /* size of encoded data */
    t_float *x_inbuf;         /* data to be coded by Speex */
    char  *x_outbuf;          /* data returned by Speex -> our speex stream */
    int x_bytesbuffered;      /* number of unprocessed bytes in buffer */
    int x_bytesemitted;       /* number of encoded bytes emitted       */
    int x_start;
    t_float *x_encchunk;

        /* connection data        */
    int x_fd;                 /* info about connection status */
    int x_outpackets;         /* speex packets sent           */

    t_float x_f;              /* float needed for signal input */

} t_speexout;


    /* encode PCM data to speex frames */
static void speexout_encode(t_speexout *x)
{
    if ( x->x_bytesbuffered > x->x_framesize )
    {
      speex_bits_reset(&x->x_bits);
      
      {
        t_int sp=0, rp=0;
     
          while( sp < x->x_framesize )
          {
             rp=(x->x_outp+sp)%IN_BUFFER_SIZE;
             // post( "speexout~ : sp=%d : rp=%d", sp, rp );
             x->x_encchunk[ sp++ ] = *(x->x_inbuf+rp);
          }
          speex_encode(x->x_encstate, x->x_encchunk, &x->x_bits);
      }

      x->x_outp = (x->x_outp+x->x_framesize)%IN_BUFFER_SIZE;
      x->x_bytesbuffered -= x->x_framesize;
      x->x_encsize = speex_bits_write(&x->x_bits, x->x_outbuf+1, OUT_BUFFER_SIZE );
      if ( x->x_encsize < 127 )
      {
         *(x->x_outbuf) = (char)x->x_encsize; 
      }
      else
      {
         post( "speexout~ : encoding error : frame is more than 127 bytes" );
         x->x_encsize = -1;
      }
      x->x_bytesemitted += x->x_encsize;
#ifdef DATADEBUG
      {
        t_int si;

          printf( "speexout~ : encoded :  " );
          for ( si=0; si<x->x_encsize; si++ )
          {
              printf( "%d ", *(x->x_outbuf+si) );
          }
          printf( "\n" );
      }
#endif
    }
    else
    {
      x->x_encsize = -1;
    }
}

    /* stream data to the peer */
static void speexout_stream(t_speexout *x)
{
  int count = -1, i; 

  if ( x->x_encsize > 0 ) 
  {
    count = send(x->x_fd, x->x_outbuf, x->x_encsize+1, MSG_NOSIGNAL);
    if(count < 0)
    {
        error("speexout~: could not send encoded data to the peer (%d)", count);
#ifndef UNIX
        closesocket(x->x_fd);
#else
        close(x->x_fd);
#endif
        x->x_fd = -1;
        outlet_float(x->x_obj.ob_outlet, 0);
    } 
    else
    {
       x->x_outpackets++;
       // post( "speexout~ : emitted %d bytes (packets = %d)", count, x->x_outpackets );
       if ( x->x_outpackets%100 == 0 )
       {
           // post( "speexout~ : emitted %d bytes (packets = %d)", x->x_bytesemitted, x->x_outpackets );
       }
       if(count != x->x_encsize+1)
       {
         error("speexout~: %d bytes skipped", x->x_encsize - count);
       }
    }
    x->x_encsize = -1;
  }
}

    
    /* buffer and downsample the data */
static t_int *speexout_perform(t_int *w)
{
    t_float *in   = (t_float *)(w[1]);       /* audio inlet */
    t_speexout *x = (t_speexout *)(w[2]);
    int n = (int)(w[3]);                      /* number of samples */
    unsigned short i,wp;
    t_float accum = 0.; 
    int sratio;

    /* samplerate is supposed to be > 16kHz, thus sratio > 1 */
    if ( x->x_mode == SPEEX_NB_MODE ) 
    {
       sratio = x->x_samplerate / 8000;
    }
    else
    {
       sratio = x->x_samplerate / 16000;
    }

    /* copy the data into the buffer and resample audio data */
    
    accum=0;
    for(wp = 0; wp < n; wp++)
    {
        accum += *(in+wp);
        if ( wp % sratio == sratio - 1 )
        {
           x->x_inbuf[x->x_inp] = ( accum / sratio ) * 8000; // scale the input for speex best efficiency
           // post( "x->x_inp : %d", x->x_inp );
           x->x_inp = (x->x_inp+1)%IN_BUFFER_SIZE;
           x->x_bytesbuffered ++;
           accum = 0;
        }
    }

    if( ( x->x_fd >= 0 ) && ( x->x_bytesbuffered > x->x_framesize ) )
    { 
        /* encode and send to the peer */
        speexout_encode(x);        /* speex encoding         */
        speexout_stream(x);        /* stream mp3 to the peer */
    }
    else
    {
        x->x_start = -1;
    }
    return (w+4);
}

static void speexout_dsp(t_speexout *x, t_signal **sp)
{
    dsp_add(speexout_perform, 3, sp[0]->s_vec, x, sp[0]->s_n);
}

    /* initialize the speex library */
static void speexout_tilde_speex_init(t_speexout *x)
{

    speex_bits_init(&x->x_bits);

    switch ( x->x_mode ) 
    {
      case SPEEX_NB_MODE :
        x->x_encstate = speex_encoder_init(&speex_nb_mode);
        break;

      case SPEEX_WB_MODE :
        x->x_encstate = speex_encoder_init(&speex_wb_mode);
        break;
  
      default :
        error( "speexout~ : severe error : encoding scheme is unknown" );
        break;
    }

    speex_encoder_ctl(x->x_encstate, SPEEX_GET_FRAME_SIZE, (void*)&x->x_framesize);
    post( "speexout~ : frame size : %d", x->x_framesize );

}

    /* connect to the peer         */
static void speexout_connect(t_speexout *x, t_symbol *hostname, t_floatarg fportno)
{
    struct          sockaddr_in csocket;
    struct          hostent *hp;
    int             portno            = fportno;    /* get port from message box */

        /* variables used for communication with the peer */
    const char      *buf = 0;
    unsigned int    len;
    int    sockfd;

#ifndef UNIX
    unsigned int    ret;
#else
    int    ret;
#endif

    if (x->x_fd >= 0)
    {
        error("speexout~: already connected");
        return;
    }

    sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (sockfd < 0)
    {
        error("speexout~: internal error while attempting to open socket");
        return;
    }

        /* connect socket using hostname provided in command line */
    csocket.sin_family = AF_INET;
    hp = gethostbyname(hostname->s_name);
    if (hp == 0)
    {
        post("speexout~: bad host?");
#ifndef UNIX
        closesocket(sockfd);
#else
        close(sockfd);
#endif
        return;
    }
    memcpy((char *)&csocket.sin_addr, (char *)hp->h_addr, hp->h_length);

        /* assign client port number */
    csocket.sin_port = htons((unsigned short)portno);

        /* try to connect.  */
    post("speexout~: connecting to port %d", portno);
    if (connect(sockfd, (struct sockaddr *) &csocket, sizeof (csocket)) < 0)
    {
        error("speexout~: connection failed!\n");
#ifndef UNIX
        closesocket(sockfd);
#else
        close(sockfd);
#endif
        return;
    }

    x->x_fd = sockfd;
    x->x_outpackets = 0;
    outlet_float( x->x_obj.ob_outlet, 1 );
    post( "speexout~ : connected to peer" );


}

    /* close connection to the peer         */
static void speexout_disconnect(t_speexout *x)
{

  int err = -1;

    if(x->x_fd >= 0)            /* close socket */
    {
#ifndef UNIX
        closesocket(x->x_fd);
#else
        close(x->x_fd);
#endif
        x->x_fd = -1;
        outlet_float( x->x_obj.ob_outlet, 0 );
        post("speexout~: connection closed");
    }
}

    /* settings for encoding quality */
static void speexout_quality(t_speexout *x, t_floatarg fquality )
{
    if ( fquality < 0 || fquality > 10 ) {
       post( "speexout~ : wrong quality." );
       return;
    }
    x->x_quality = fquality;
    post("speexout~: setting quality to : %d", x->x_quality);
    speex_encoder_ctl(x->x_encstate, SPEEX_SET_QUALITY, &x->x_quality);
}

    /* clean up */
static void speexout_free(t_speexout *x)    
{

    speex_bits_destroy(&x->x_bits);

    speex_encoder_destroy(x->x_encstate);

    post("speexout~: encoder destroyed");

    if(x->x_fd >= 0)
#ifndef UNIX
        closesocket(x->x_fd);
#else
        close(x->x_fd);
#endif
    freebytes(x->x_inbuf, IN_BUFFER_SIZE*sizeof(t_float));
    freebytes(x->x_outbuf, OUT_BUFFER_SIZE);
    freebytes(x->x_encchunk, x->x_framesize*sizeof(t_float));
}

static void *speexout_new(t_symbol *s, int argc, t_atom *argv)
{
    t_speexout *x = (t_speexout *)pd_new(speexout_class);
    outlet_new( &x->x_obj, &s_float );

    x->x_mode = SPEEX_NB_MODE;
    x->x_quality = SPEEX_DEFAULT_QUALITY;
    x->x_fd = -1;
    x->x_outpackets = 0;
    x->x_samplerate = sys_getsr();
    x->x_inbuf = getbytes(IN_BUFFER_SIZE*sizeof(t_float));  /* buffer for encoder input */
    x->x_outbuf = getbytes(OUT_BUFFER_SIZE);              /* our mp3 stream */
    if ((!x->x_inbuf)||(!x->x_outbuf)) /* check buffers... */
    {
        error("speexout~ : cannot allocate buffers");
        return NULL;
    }
    x->x_bytesbuffered = 0;
    x->x_bytesemitted = 0;
    x->x_inp = 0;
    x->x_outp = 0;
    x->x_encsize = 0;
    x->x_start = -1;
    speexout_tilde_speex_init(x);

    x->x_encchunk = (t_float*)getbytes(x->x_framesize*sizeof(t_float));
    if (!x->x_encchunk) /* check allocation... */
    {
        error("speexout~ : cannot allocate chunk");
        return NULL;
    }
    return(x);
}

void speexout_tilde_setup(void)
{
    post(speexout_version);
    speexout_class = class_new(gensym("speexout~"), (t_newmethod)speexout_new, (t_method)speexout_free,
        sizeof(t_speexout), 0, A_GIMME, 0);
    CLASS_MAINSIGNALIN(speexout_class, t_speexout, x_f );
    class_sethelpsymbol(speexout_class, gensym("help-speex~.pd"));
    class_addmethod(speexout_class, (t_method)speexout_dsp, gensym("dsp"), 0);
    class_addmethod(speexout_class, (t_method)speexout_connect, gensym("connect"), A_SYMBOL, A_FLOAT, 0);
    class_addmethod(speexout_class, (t_method)speexout_disconnect, gensym("disconnect"), 0);
    class_addmethod(speexout_class, (t_method)speexout_quality, gensym("quality"), A_FLOAT, 0);
}