format_mp3.c 18.4 KB
Newer Older
1
/* -*- c-basic-offset: 4; -*- */
2
3
4
5
6
7
8
9
10
11
12
13
/* Icecast
 *
 * This program is distributed under the GNU General Public License, version 2.
 * A copy of this license is included with this source.
 *
 * Copyright 2000-2004, Jack Moffitt <jack@xiph.org, 
 *                      Michael Smith <msmith@xiph.org>,
 *                      oddsock <oddsock@xiph.org>,
 *                      Karl Heyes <karl@xiph.org>
 *                      and others (see AUTHORS for details).
 */

Michael Smith's avatar
Michael Smith committed
14
15
/* format_mp3.c
**
Michael Smith's avatar
Michael Smith committed
16
** format plugin for mp3
Michael Smith's avatar
Michael Smith committed
17
18
19
**
*/

20
21
22
23
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

Michael Smith's avatar
Michael Smith committed
24
25
26
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
Karl Heyes's avatar
Karl Heyes committed
27
28
29
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
Michael Smith's avatar
Michael Smith committed
30
31

#include "refbuf.h"
Michael Smith's avatar
Michael Smith committed
32
33
#include "source.h"
#include "client.h"
Michael Smith's avatar
Michael Smith committed
34
35
36

#include "stats.h"
#include "format.h"
Michael Smith's avatar
Michael Smith committed
37
38
39
40
41
42
#include "httpp/httpp.h"

#include "logging.h"

#include "format_mp3.h"

Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
43
44
45
#ifdef WIN32
#define strcasecmp stricmp
#define strncasecmp strnicmp
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
46
#define snprintf _snprintf
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
47
48
#endif

Michael Smith's avatar
Michael Smith committed
49
50
#define CATMODULE "format-mp3"

51
52
53
/* Note that this seems to be 8192 in shoutcast - perhaps we want to be the
 * same for compability with crappy clients?
 */
Michael Smith's avatar
Michael Smith committed
54
#define ICY_METADATA_INTERVAL 16000
Michael Smith's avatar
Michael Smith committed
55

56
static void format_mp3_free_plugin(format_plugin_t *self);
Karl Heyes's avatar
Karl Heyes committed
57
58
59
60
static refbuf_t *mp3_get_filter_meta (source_t *source);
static refbuf_t *mp3_get_no_meta (source_t *source);

static int  format_mp3_create_client_data (source_t *source, client_t *client);
61
static void free_mp3_client_data (client_t *client);
Karl Heyes's avatar
Karl Heyes committed
62
static int format_mp3_write_buf_to_client(format_plugin_t *self, client_t *client);
Michael Smith's avatar
Michael Smith committed
63
64
static void format_mp3_send_headers(format_plugin_t *self, 
        source_t *source, client_t *client);
Karl Heyes's avatar
Karl Heyes committed
65
66
static void write_mp3_to_file (struct source_tag *source, refbuf_t *refbuf);

Michael Smith's avatar
Michael Smith committed
67
68

typedef struct {
Michael Smith's avatar
Michael Smith committed
69
70
   int use_metadata;
   int metadata_offset;
Karl Heyes's avatar
Karl Heyes committed
71
72
73
   unsigned int since_meta_block;
   int in_metadata;
   refbuf_t *associated;
Michael Smith's avatar
Michael Smith committed
74
} mp3_client_data;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
75

Karl Heyes's avatar
Karl Heyes committed
76
int format_mp3_get_plugin (source_t *source)
Michael Smith's avatar
Michael Smith committed
77
{
78
    char *metadata;
79
    format_plugin_t *plugin;
Michael Smith's avatar
Michael Smith committed
80
    mp3_state *state = calloc(1, sizeof(mp3_state));
Karl Heyes's avatar
Karl Heyes committed
81
    refbuf_t *meta;
Michael Smith's avatar
Michael Smith committed
82

83
    plugin = (format_plugin_t *)malloc(sizeof(format_plugin_t));
Michael Smith's avatar
Michael Smith committed
84

85
    plugin->type = FORMAT_TYPE_MP3;
Karl Heyes's avatar
Karl Heyes committed
86
    plugin->get_buffer = mp3_get_no_meta;
Michael Smith's avatar
Michael Smith committed
87
    plugin->write_buf_to_client = format_mp3_write_buf_to_client;
Karl Heyes's avatar
Karl Heyes committed
88
    plugin->write_buf_to_file = write_mp3_to_file;
89
    plugin->create_client_data = format_mp3_create_client_data;
Michael Smith's avatar
Michael Smith committed
90
    plugin->client_send_headers = format_mp3_send_headers;
91
    plugin->free_plugin = format_mp3_free_plugin;
92
    plugin->format_description = "MP3 audio";
Michael Smith's avatar
Michael Smith committed
93

94
    plugin->_state = state;
Michael Smith's avatar
Michael Smith committed
95

96
97
98
99
100
    /* initial metadata needs to be blank for sending to clients and for
       comparing with new metadata */
    meta = refbuf_new (2);
    memcpy (meta->data, "\0\0", 2);
    meta->len = 1;
Karl Heyes's avatar
Karl Heyes committed
101
102
    state->metadata = meta;
    state->interval = ICY_METADATA_INTERVAL;
Michael Smith's avatar
Michael Smith committed
103

Karl Heyes's avatar
Karl Heyes committed
104
105
106
107
108
109
110
111
112
    metadata = httpp_getvar (source->parser, "icy-metaint");
    if (metadata)
    {
        state->inline_metadata_interval = atoi (metadata);
        state->offset = 0;
        plugin->get_buffer = mp3_get_filter_meta;
    }
    source->format = plugin;
    thread_mutex_create (&state->url_lock);
113

Karl Heyes's avatar
Karl Heyes committed
114
    return 0;
Michael Smith's avatar
Michael Smith committed
115
116
}

117

Karl Heyes's avatar
Karl Heyes committed
118
void mp3_set_tag (format_plugin_t *plugin, char *tag, char *value)
Michael Smith's avatar
Michael Smith committed
119
{
Karl Heyes's avatar
Karl Heyes committed
120
121
122
123
124
125
126
127
128
129
130
131
132
    mp3_state *source_mp3 = plugin->_state;
    unsigned int len;
    const char meta[] = "StreamTitle='";
    int size = sizeof (meta) + 1;

    if (tag==NULL || value == NULL)
        return;

    len = strlen (value)+1;
    size += len;
    /* protect against multiple updaters */
    thread_mutex_lock (&source_mp3->url_lock);
    if (strcmp (tag, "title") == 0 || strcmp (tag, "song") == 0)
133
    {
Karl Heyes's avatar
Karl Heyes committed
134
135
        char *p = strdup (value);
        if (p)
136
        {
Karl Heyes's avatar
Karl Heyes committed
137
138
139
140
141
            free (source_mp3->url_title);
            free (source_mp3->url_artist);
            source_mp3->url_artist = NULL;
            source_mp3->url_title = p;
            source_mp3->update_metadata = 1;
142
        }
Karl Heyes's avatar
Karl Heyes committed
143
144
145
146
147
148
149
150
151
152
153
154
155
    }
    else if (strcmp (tag, "artist") == 0)
    {
        char *p = strdup (value);
        if (p)
        {
            free (source_mp3->url_artist);
            source_mp3->url_artist = p;
            source_mp3->update_metadata = 1;
        }
    }
    thread_mutex_unlock (&source_mp3->url_lock);
}
156
157


Karl Heyes's avatar
Karl Heyes committed
158
159
160
161
162
163
static void filter_shoutcast_metadata (source_t *source, char *metadata, unsigned int meta_len)
{
    if (metadata)
    {
        char *end, *p;
        int len;
164

Karl Heyes's avatar
Karl Heyes committed
165
        do
166
        {
Karl Heyes's avatar
Karl Heyes committed
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
            metadata++;
            if (strncmp (metadata, "StreamTitle='", 13))
                break;
            if ((end = strstr (metadata, "\';")) == NULL)
                break;
            len = (end - metadata) - 13;
            p = calloc (1, len+1);
            if (p)
            {
                memcpy (p, metadata+13, len);
                stats_event (source->mount, "title", p);
                yp_touch (source->mount);
                free (p);
            }
        } while (0);
    }
}
184

Michael Smith's avatar
Michael Smith committed
185

Karl Heyes's avatar
Karl Heyes committed
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
/* called from the source thread when the metadata has been updated.
 * The artist title are checked and made ready for clients to send
 */
void mp3_set_title (source_t *source)
{
    const char meta[] = "StreamTitle='";
    int size;
    unsigned char len_byte;
    refbuf_t *p;
    unsigned int len = sizeof(meta) + 2; /* the StreamTitle, quotes, ; and null */
    mp3_state *source_mp3 = source->format->_state;

    /* make sure the url data does not disappear from under us */
    thread_mutex_lock (&source_mp3->url_lock);

    /* work out message length */
    if (source_mp3->url_artist)
        len += strlen (source_mp3->url_artist);
    if (source_mp3->url_title)
        len += strlen (source_mp3->url_title);
    if (source_mp3->url_artist && source_mp3->url_title)
        len += 3;
#define MAX_META_LEN 255*16
    if (len > MAX_META_LEN)
    {
        thread_mutex_unlock (&source_mp3->url_lock);
        WARN1 ("Metadata too long at %d chars", len);
        return;
    }
    /* work out the metadata len byte */
    len_byte = (len-1) / 16 + 1;
Michael Smith's avatar
Michael Smith committed
217

Karl Heyes's avatar
Karl Heyes committed
218
219
    /* now we know how much space to allocate, +1 for the len byte */
    size = len_byte * 16 + 1;
Michael Smith's avatar
Michael Smith committed
220

Karl Heyes's avatar
Karl Heyes committed
221
222
223
224
    p = refbuf_new (size);
    if (p)
    {
        mp3_state *source_mp3 = source->format->_state;
Michael Smith's avatar
Michael Smith committed
225

Karl Heyes's avatar
Karl Heyes committed
226
227
228
229
230
231
232
233
        memset (p->data, '\0', size);
        if (source_mp3->url_artist && source_mp3->url_title)
            snprintf (p->data, size, "%c%s%s - %s';", len_byte, meta,
                    source_mp3->url_artist, source_mp3->url_title);
        else
            snprintf (p->data, size, "%c%s%s';", len_byte, meta,
                    source_mp3->url_title);
        filter_shoutcast_metadata (source, p->data, size);
Michael Smith's avatar
Michael Smith committed
234

Karl Heyes's avatar
Karl Heyes committed
235
236
237
238
        refbuf_release (source_mp3->metadata);
        source_mp3->metadata = p;
    }
    thread_mutex_unlock (&source_mp3->url_lock);
Michael Smith's avatar
Michael Smith committed
239
240
}

Karl Heyes's avatar
Karl Heyes committed
241
242
243
244
245
246

/* send the appropriate metadata, and return the number of bytes written
 * which is 0 or greater.  Check the client in_metadata value afterwards
 * to see if all metadata has been sent
 */
static int send_mp3_metadata (client_t *client, refbuf_t *associated)
Michael Smith's avatar
Michael Smith committed
247
{
248
    int ret = 0;
Karl Heyes's avatar
Karl Heyes committed
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
    unsigned char *metadata;
    int meta_len;
    mp3_client_data *client_mp3 = client->format_data;

    /* If there is a change in metadata then send it else
     * send a single zero value byte in its place
     */
    if (associated == client_mp3->associated)
    {
        metadata = "\0";
        meta_len = 1;
    }
    else
    {
        metadata = associated->data + client_mp3->metadata_offset;
        meta_len = associated->len - client_mp3->metadata_offset;
    }
    ret = client_send_bytes (client, metadata, meta_len);

    if (ret == meta_len)
    {
        client_mp3->associated = associated;
        client_mp3->metadata_offset = 0;
        client_mp3->in_metadata = 0;
        client_mp3->since_meta_block = 0;
        return ret;
    }
    if (ret > 0)
        client_mp3->metadata_offset += ret;
    else
        ret = 0;
    client_mp3->in_metadata = 1;

    return ret;
}


/* Handler for writing mp3 data to a client, taking into account whether
 * client has requested shoutcast style metadata updates
 */
static int format_mp3_write_buf_to_client (format_plugin_t *self, client_t *client) 
{
    int ret, written = 0;
    mp3_client_data *client_mp3 = client->format_data;
    mp3_state *source_mp3 = self->_state;
    refbuf_t *refbuf = client->refbuf;
    char *buf;
    unsigned int len;

    if (refbuf->next == NULL && client->pos == refbuf->len)
        return 0;

    /* move to the next buffer if we have finished with the current one */
    if (refbuf->next && client->pos == refbuf->len)
Michael Smith's avatar
Michael Smith committed
303
    {
Karl Heyes's avatar
Karl Heyes committed
304
305
306
        client_set_queue (client, refbuf->next);
        refbuf = client->refbuf;
    }
Michael Smith's avatar
Michael Smith committed
307

Karl Heyes's avatar
Karl Heyes committed
308
309
    buf = refbuf->data + client->pos;
    len = refbuf->len - client->pos;
Michael Smith's avatar
Michael Smith committed
310

Karl Heyes's avatar
Karl Heyes committed
311
312
313
314
315
316
317
    do
    {
        /* send any unwritten metadata to the client */
        if (client_mp3->in_metadata)
        {
            refbuf_t *associated = refbuf->associated;
            ret = send_mp3_metadata (client, associated);
Michael Smith's avatar
Michael Smith committed
318

Karl Heyes's avatar
Karl Heyes committed
319
320
321
            if (client_mp3->in_metadata)
                break;
            written += ret;
Michael Smith's avatar
Michael Smith committed
322
        }
Karl Heyes's avatar
Karl Heyes committed
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
        /* see if we need to send the current metadata to the client */
        if (client_mp3->use_metadata)
        {
            unsigned int remaining = source_mp3->interval -
                client_mp3->since_meta_block;

            /* sending the metadata block */
            if (remaining <= len)
            {
                /* send any mp3 before the metadata block */
                if (remaining)
                {
                    ret = client_send_bytes (client, buf, remaining);

                    if (ret > 0)
                    {
                        client_mp3->since_meta_block += ret;
                        client->pos += ret;
                    }
                    if (ret < (int)remaining)
                        break;
                    written += ret;
                }
                ret = send_mp3_metadata (client, refbuf->associated);
                if (client_mp3->in_metadata)
                    break;
                written += ret;
                /* change buf and len */
                buf += remaining;
                len -= remaining;
            }
354
        }
Karl Heyes's avatar
Karl Heyes committed
355
356
357
358
        /* write any mp3, maybe after the metadata block */
        if (len)
        {
            ret = client_send_bytes (client, buf, len);
359

Karl Heyes's avatar
Karl Heyes committed
360
361
362
363
364
365
366
367
368
369
370
            if (ret > 0)
            {
                client_mp3->since_meta_block += ret;
                client->pos += ret;
            }
            if (ret < (int)len)
                break;
            written += ret;
        }
        ret = 0;
    } while (0);
Michael Smith's avatar
Michael Smith committed
371

Karl Heyes's avatar
Karl Heyes committed
372
373
374
    if (ret > 0)
        written += ret;
    return written;
Michael Smith's avatar
Michael Smith committed
375
376
377
}

static void format_mp3_free_plugin(format_plugin_t *self)
Michael Smith's avatar
Michael Smith committed
378
{
379
    /* free the plugin instance */
Michael Smith's avatar
Michael Smith committed
380
    mp3_state *state = self->_state;
Michael Smith's avatar
Michael Smith committed
381

Karl Heyes's avatar
Karl Heyes committed
382
383
384
385
    thread_mutex_destroy (&state->url_lock);
    free (state->url_artist);
    free (state->url_title);
    refbuf_release (state->metadata);
Michael Smith's avatar
Michael Smith committed
386
    free(state);
387
    free(self);
Michael Smith's avatar
Michael Smith committed
388
389
}

Karl Heyes's avatar
Karl Heyes committed
390
391
392

/* read an mp3 stream which does not have shoutcast style metadata */
static refbuf_t *mp3_get_no_meta (source_t *source)
Michael Smith's avatar
Michael Smith committed
393
{
Karl Heyes's avatar
Karl Heyes committed
394
    int bytes;
395
    refbuf_t *refbuf;
Karl Heyes's avatar
Karl Heyes committed
396
    mp3_state *source_mp3 = source->format->_state;
397

Karl Heyes's avatar
Karl Heyes committed
398
399
400
    if ((refbuf = refbuf_new (2048)) == NULL)
        return NULL;
    bytes = sock_read_bytes (source->con->sock, refbuf->data, 2048);
401

Karl Heyes's avatar
Karl Heyes committed
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
    if (bytes == 0)
    {
        INFO1 ("End of stream %s", source->mount);
        source->running = 0;
        refbuf_release (refbuf);
        return NULL;
    }
    if (source_mp3->update_metadata)
    {
        mp3_set_title (source);
        source_mp3->update_metadata = 0;
    }
    if (bytes > 0)
    {
        refbuf->len  = bytes;
        refbuf->associated = source_mp3->metadata;
        refbuf_addref (source_mp3->metadata);
        return refbuf;
    }
    refbuf_release (refbuf);
422

Karl Heyes's avatar
Karl Heyes committed
423
424
    if (!sock_recoverable (sock_error()))
        source->running = 0;
425

Karl Heyes's avatar
Karl Heyes committed
426
427
    return NULL;
}
428
429


Karl Heyes's avatar
Karl Heyes committed
430
431
432
433
434
435
436
437
438
439
440
441
/* read mp3 data with inlined metadata from the source. Filter out the
 * metadata so that the mp3 data itself is store on the queue and the
 * metadata is is associated with it
 */
static refbuf_t *mp3_get_filter_meta (source_t *source)
{
    refbuf_t *refbuf;
    format_plugin_t *plugin = source->format;
    mp3_state *source_mp3 = plugin->_state;
    unsigned char *src;
    unsigned int bytes, mp3_block;
    int ret;
442

Karl Heyes's avatar
Karl Heyes committed
443
444
    refbuf = refbuf_new (2048);
    src = refbuf->data;
445

Karl Heyes's avatar
Karl Heyes committed
446
    ret = sock_read_bytes (source->con->sock, refbuf->data, 2048);
447

Karl Heyes's avatar
Karl Heyes committed
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
    if (ret == 0)
    {
        INFO1 ("End of stream %s", source->mount);
        source->running = 0;
        refbuf_release (refbuf);
        return NULL;
    }
    if (source_mp3->update_metadata)
    {
        mp3_set_title (source);
        source_mp3->update_metadata = 0;
    }
    if (ret < 0)
    {
        refbuf_release (refbuf);
        if (sock_recoverable (sock_error()))
            return NULL; /* go back to waiting */
        INFO0 ("Error on connection from source");
        source->running = 0;
        return NULL;
    }
    /* fill the buffer with the read data */
    bytes = (unsigned int)ret;
    refbuf->len = 0;
    while (bytes > 0)
    {
        unsigned int metadata_remaining;
475

Karl Heyes's avatar
Karl Heyes committed
476
        mp3_block = source_mp3->inline_metadata_interval - source_mp3->offset;
477

Karl Heyes's avatar
Karl Heyes committed
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
        /* is there only enough to account for mp3 data */
        if (bytes <= mp3_block)
        {
            refbuf->len += bytes;
            source_mp3->offset += bytes;
            break;
        }
        /* we have enough data to get to the metadata
         * block, but only transfer upto it */
        if (mp3_block)
        {
            src += mp3_block;
            bytes -= mp3_block;
            refbuf->len += mp3_block;
            source_mp3->offset += mp3_block;
            continue;
        }
495

Karl Heyes's avatar
Karl Heyes committed
496
497
498
499
500
501
502
503
        /* process the inline metadata, len == 0 indicates not seen any yet */
        if (source_mp3->build_metadata_len == 0)
        {
            memset (source_mp3->build_metadata, 0,
                    sizeof (source_mp3->build_metadata));
            source_mp3->build_metadata_offset = 0;
            source_mp3->build_metadata_len = 1 + (*src * 16);
        }
504

Karl Heyes's avatar
Karl Heyes committed
505
506
507
508
509
510
511
512
513
514
515
516
517
518
        /* do we have all of the metatdata block */
        metadata_remaining = source_mp3->build_metadata_len -
            source_mp3->build_metadata_offset;
        if (bytes < metadata_remaining)
        {
            memcpy (source_mp3->build_metadata +
                    source_mp3->build_metadata_offset, src, bytes);
            source_mp3->build_metadata_offset += bytes;
            break;
        }
        /* copy all bytes except the last one, that way we 
         * know a null byte terminates the message */
        memcpy (source_mp3->build_metadata + source_mp3->build_metadata_offset,
                src, metadata_remaining-1);
519

Karl Heyes's avatar
Karl Heyes committed
520
521
522
        /* overwrite metadata in the buffer */
        bytes -= metadata_remaining;
        memmove (src, src+metadata_remaining, bytes);
523

524
525
526
        /* assign metadata if it's greater than 1 byte, and the text has changed */
        if (source_mp3->build_metadata_len > 1 &&
                strcmp (source_mp3->build_metadata+1, source_mp3->metadata->data+1) != 0)
Karl Heyes's avatar
Karl Heyes committed
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
        {
            refbuf_t *meta = refbuf_new (source_mp3->build_metadata_len);
            memcpy (meta->data, source_mp3->build_metadata,
                    source_mp3->build_metadata_len);

            DEBUG1("shoutcast metadata %.4080s", meta->data+1);
            if (strncmp (meta->data+1, "StreamTitle=", 12) == 0)
            {
                filter_shoutcast_metadata (source, source_mp3->build_metadata,
                        source_mp3->build_metadata_len);
                refbuf_release (source_mp3->metadata);
                source_mp3->metadata = meta;
            }
            else
            {
                ERROR0 ("Incorrect metadata format, ending stream");
                source->running = 0;
                refbuf_release (refbuf);
                return NULL;
546
547
            }
        }
Karl Heyes's avatar
Karl Heyes committed
548
549
        source_mp3->offset = 0;
        source_mp3->build_metadata_len = 0;
550
    }
Karl Heyes's avatar
Karl Heyes committed
551
552
553
554
555
    /* the data we have just read may of just been metadata */
    if (refbuf->len == 0)
    {
        refbuf_release (refbuf);
        return NULL;
556
    }
Karl Heyes's avatar
Karl Heyes committed
557
558
    refbuf->associated = source_mp3->metadata;
    refbuf_addref (source_mp3->metadata);
Michael Smith's avatar
Michael Smith committed
559

Karl Heyes's avatar
Karl Heyes committed
560
    return refbuf;
Michael Smith's avatar
Michael Smith committed
561
562
}

Karl Heyes's avatar
Karl Heyes committed
563
564

static int format_mp3_create_client_data(source_t *source, client_t *client)
Michael Smith's avatar
Michael Smith committed
565
566
567
568
{
    mp3_client_data *data = calloc(1,sizeof(mp3_client_data));
    char *metadata;

Karl Heyes's avatar
Karl Heyes committed
569
570
    if (data == NULL)
        return -1;
Michael Smith's avatar
Michael Smith committed
571

Karl Heyes's avatar
Karl Heyes committed
572
573
    client->format_data = data;
    client->free_client_data = free_mp3_client_data;
574
    metadata = httpp_getvar(client->parser, "icy-metadata");
Michael Smith's avatar
Michael Smith committed
575
    if(metadata)
Michael Smith's avatar
Michael Smith committed
576
        data->use_metadata = atoi(metadata)>0?1:0;
Michael Smith's avatar
Michael Smith committed
577

Karl Heyes's avatar
Karl Heyes committed
578
    return 0;
579
}
Michael Smith's avatar
Michael Smith committed
580

581
582
583
584
585
586
587
588

static void free_mp3_client_data (client_t *client)
{
    free (client->format_data);
    client->format_data = NULL;
}


Michael Smith's avatar
Michael Smith committed
589
590
591
592
static void format_mp3_send_headers(format_plugin_t *self,
        source_t *source, client_t *client)
{
    int bytes;
593
594
    char *content_length;

595
    mp3_client_data *mp3data = client->format_data;
Michael Smith's avatar
Michael Smith committed
596
597
    
    client->respcode = 200;
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614

    /* This little bit of code is for compatability with
       flash mp3 streaming. Flash requires a content-length
       in order for it to stream mp3s, and so based off a
       trial and error effort, the following number was derived.
       It is the largest content-length that we can send, anything
       larger causes flash streaming not to work. Note that it
       is also possible that other flash-based players may not
       send this request header (x-flash-version), but given the
       sampleset I had access to, this should suffice. */
    if (httpp_getvar(client->parser, "x-flash-version")) {
        content_length = "Content-Length: 347122319\r\n";
    }
    else {
        content_length = "";
    }

Michael Smith's avatar
Michael Smith committed
615
    /* TODO: This may need to be ICY/1.0 for shoutcast-compatibility? */
Michael Smith's avatar
Michael Smith committed
616
617
    bytes = sock_write(client->con->sock, 
            "HTTP/1.0 200 OK\r\n" 
618
619
620
621
            "Content-Type: %s\r\n"
            "%s", 
            format_get_mimetype(source->format->type),
            content_length);
Michael Smith's avatar
Michael Smith committed
622

Karl Heyes's avatar
Karl Heyes committed
623
624
    if (bytes > 0)
        client->con->sent_bytes += bytes;
Michael Smith's avatar
Michael Smith committed
625

Karl Heyes's avatar
Karl Heyes committed
626
627
    if (mp3data->use_metadata)
    {
628
        int bytes = sock_write(client->con->sock, "icy-metaint:%d\r\n", 
Michael Smith's avatar
Michael Smith committed
629
630
631
632
                ICY_METADATA_INTERVAL);
        if(bytes > 0)
            client->con->sent_bytes += bytes;
    }
Karl Heyes's avatar
Karl Heyes committed
633
    format_send_general_headers(self, source, client);
Michael Smith's avatar
Michael Smith committed
634
635
}

Karl Heyes's avatar
Karl Heyes committed
636
637
638
639
640
641
642
643
644
645
646
647
648

static void write_mp3_to_file (struct source_tag *source, refbuf_t *refbuf)
{
    if (refbuf->len == 0)
        return;
    if (fwrite (refbuf->data, 1, refbuf->len, source->dumpfile) < (size_t)refbuf->len)
    {
        WARN0 ("Write to dump file failed, disabling");
        fclose (source->dumpfile);
        source->dumpfile = NULL;
    }
}