format_mp3.c 18.9 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
**
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"
32 33
#include "source.h"
#include "client.h"
Michael Smith's avatar
Michael Smith committed
34 35 36

#include "stats.h"
#include "format.h"
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

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?
 */
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);
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);

67 68

typedef struct {
69
   unsigned int interval;
Michael Smith's avatar
Michael Smith committed
70
   int metadata_offset;
Karl Heyes's avatar
Karl Heyes committed
71 72 73
   unsigned int since_meta_block;
   int in_metadata;
   refbuf_t *associated;
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 *)calloc(1, sizeof(format_plugin_t));
Michael Smith's avatar
Michael Smith committed
84

85
    plugin->type = FORMAT_TYPE_GENERIC;
Karl Heyes's avatar
Karl Heyes committed
86
    plugin->get_buffer = mp3_get_no_meta;
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;
90
    plugin->client_send_headers = format_mp3_send_headers;
91
    plugin->free_plugin = format_mp3_free_plugin;
92
    plugin->set_tag = mp3_set_tag;
93 94 95 96 97 98

    plugin->contenttype = httpp_getvar (source->parser, "content-type");
    if (plugin->contenttype == NULL) {
        /* We default to MP3 audio for old clients without content types */
        plugin->contenttype = "audio/mpeg";
    }
Michael Smith's avatar
Michael Smith committed
99

100
    plugin->_state = state;
Michael Smith's avatar
Michael Smith committed
101

102 103 104 105 106
    /* 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
107
    state->metadata = meta;
108
    state->interval = -1;
Michael Smith's avatar
Michael Smith committed
109

Karl Heyes's avatar
Karl Heyes committed
110 111 112 113
    metadata = httpp_getvar (source->parser, "icy-metaint");
    if (metadata)
    {
        state->inline_metadata_interval = atoi (metadata);
114 115 116 117 118
        if (state->inline_metadata_interval > 0)
        {
            state->offset = 0;
            plugin->get_buffer = mp3_get_filter_meta;
        }
Karl Heyes's avatar
Karl Heyes committed
119 120 121
    }
    source->format = plugin;
    thread_mutex_create (&state->url_lock);
122

Karl Heyes's avatar
Karl Heyes committed
123
    return 0;
Michael Smith's avatar
Michael Smith committed
124 125
}

126

Karl Heyes's avatar
Karl Heyes committed
127
void mp3_set_tag (format_plugin_t *plugin, char *tag, char *value)
Michael Smith's avatar
Michael Smith committed
128
{
Karl Heyes's avatar
Karl Heyes committed
129 130 131 132 133 134 135 136 137 138 139 140 141
    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)
142
    {
Karl Heyes's avatar
Karl Heyes committed
143 144
        char *p = strdup (value);
        if (p)
145
        {
Karl Heyes's avatar
Karl Heyes committed
146 147 148 149 150
            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;
151
        }
Karl Heyes's avatar
Karl Heyes committed
152 153 154 155 156 157 158 159 160 161 162 163 164
    }
    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);
}
165 166


Karl Heyes's avatar
Karl Heyes committed
167 168 169 170 171 172
static void filter_shoutcast_metadata (source_t *source, char *metadata, unsigned int meta_len)
{
    if (metadata)
    {
        char *end, *p;
        int len;
173

Karl Heyes's avatar
Karl Heyes committed
174
        do
175
        {
Karl Heyes's avatar
Karl Heyes committed
176 177 178 179 180 181 182 183 184 185
            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);
186
                logging_playlist (source->mount, p, source->listeners);
Karl Heyes's avatar
Karl Heyes committed
187 188 189 190 191 192 193
                stats_event (source->mount, "title", p);
                yp_touch (source->mount);
                free (p);
            }
        } while (0);
    }
}
194

Michael Smith's avatar
Michael Smith committed
195

Karl Heyes's avatar
Karl Heyes committed
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
/* 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
227

Karl Heyes's avatar
Karl Heyes committed
228 229
    /* 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
230

Karl Heyes's avatar
Karl Heyes committed
231 232 233 234
    p = refbuf_new (size);
    if (p)
    {
        mp3_state *source_mp3 = source->format->_state;
Michael Smith's avatar
Michael Smith committed
235

Karl Heyes's avatar
Karl Heyes committed
236 237 238 239 240 241 242 243
        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
244

Karl Heyes's avatar
Karl Heyes committed
245 246 247 248
        refbuf_release (source_mp3->metadata);
        source_mp3->metadata = p;
    }
    thread_mutex_unlock (&source_mp3->url_lock);
Michael Smith's avatar
Michael Smith committed
249 250
}

Karl Heyes's avatar
Karl Heyes committed
251 252 253 254 255 256

/* 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)
257
{
258
    int ret = 0;
Karl Heyes's avatar
Karl Heyes committed
259 260 261 262 263 264 265
    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
     */
266
    if (associated && associated != client_mp3->associated)
Karl Heyes's avatar
Karl Heyes committed
267
    {
268 269
        metadata = associated->data + client_mp3->metadata_offset;
        meta_len = associated->len - client_mp3->metadata_offset;
Karl Heyes's avatar
Karl Heyes committed
270 271 272
    }
    else
    {
273 274
        metadata = "\0";
        meta_len = 1;
Karl Heyes's avatar
Karl Heyes committed
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
    }
    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;
    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
312
    {
Karl Heyes's avatar
Karl Heyes committed
313 314 315
        client_set_queue (client, refbuf->next);
        refbuf = client->refbuf;
    }
316

Karl Heyes's avatar
Karl Heyes committed
317 318
    buf = refbuf->data + client->pos;
    len = refbuf->len - client->pos;
Michael Smith's avatar
Michael Smith committed
319

Karl Heyes's avatar
Karl Heyes committed
320 321 322 323 324 325 326
    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
327

Karl Heyes's avatar
Karl Heyes committed
328 329 330
            if (client_mp3->in_metadata)
                break;
            written += ret;
Michael Smith's avatar
Michael Smith committed
331
        }
Karl Heyes's avatar
Karl Heyes committed
332
        /* see if we need to send the current metadata to the client */
333
        if (client_mp3->interval)
Karl Heyes's avatar
Karl Heyes committed
334
        {
335
            unsigned int remaining = client_mp3->interval -
Karl Heyes's avatar
Karl Heyes committed
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
                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;
            }
363
        }
Karl Heyes's avatar
Karl Heyes committed
364 365 366 367
        /* write any mp3, maybe after the metadata block */
        if (len)
        {
            ret = client_send_bytes (client, buf, len);
368

Karl Heyes's avatar
Karl Heyes committed
369 370 371 372 373 374 375 376 377 378 379
            if (ret > 0)
            {
                client_mp3->since_meta_block += ret;
                client->pos += ret;
            }
            if (ret < (int)len)
                break;
            written += ret;
        }
        ret = 0;
    } while (0);
380

Karl Heyes's avatar
Karl Heyes committed
381 382 383
    if (ret > 0)
        written += ret;
    return written;
384 385 386
}

static void format_mp3_free_plugin(format_plugin_t *self)
Michael Smith's avatar
Michael Smith committed
387
{
388
    /* free the plugin instance */
Michael Smith's avatar
Michael Smith committed
389
    mp3_state *state = self->_state;
Michael Smith's avatar
Michael Smith committed
390

Karl Heyes's avatar
Karl Heyes committed
391 392 393 394
    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
395
    free(state);
396
    free(self);
Michael Smith's avatar
Michael Smith committed
397 398
}

Karl Heyes's avatar
Karl Heyes committed
399 400 401

/* 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
402
{
Karl Heyes's avatar
Karl Heyes committed
403
    int bytes;
404
    refbuf_t *refbuf;
Karl Heyes's avatar
Karl Heyes committed
405
    mp3_state *source_mp3 = source->format->_state;
406

Karl Heyes's avatar
Karl Heyes committed
407 408 409
    if ((refbuf = refbuf_new (2048)) == NULL)
        return NULL;
    bytes = sock_read_bytes (source->con->sock, refbuf->data, 2048);
410

Karl Heyes's avatar
Karl Heyes committed
411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427
    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);
428
        refbuf->sync_point = 1;
Karl Heyes's avatar
Karl Heyes committed
429 430 431
        return refbuf;
    }
    refbuf_release (refbuf);
432

Karl Heyes's avatar
Karl Heyes committed
433 434
    if (!sock_recoverable (sock_error()))
        source->running = 0;
435

Karl Heyes's avatar
Karl Heyes committed
436 437
    return NULL;
}
438 439


Karl Heyes's avatar
Karl Heyes committed
440 441 442 443 444 445 446 447 448 449 450 451
/* 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;
452

Karl Heyes's avatar
Karl Heyes committed
453 454
    refbuf = refbuf_new (2048);
    src = refbuf->data;
455

Karl Heyes's avatar
Karl Heyes committed
456
    ret = sock_read_bytes (source->con->sock, refbuf->data, 2048);
457

Karl Heyes's avatar
Karl Heyes committed
458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484
    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;
485

Karl Heyes's avatar
Karl Heyes committed
486
        mp3_block = source_mp3->inline_metadata_interval - source_mp3->offset;
487

Karl Heyes's avatar
Karl Heyes committed
488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504
        /* 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;
        }
505

Karl Heyes's avatar
Karl Heyes committed
506 507 508 509 510 511 512 513
        /* 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);
        }
514

Karl Heyes's avatar
Karl Heyes committed
515 516 517 518 519 520 521 522 523 524 525 526 527 528
        /* 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);
529

Karl Heyes's avatar
Karl Heyes committed
530 531 532
        /* overwrite metadata in the buffer */
        bytes -= metadata_remaining;
        memmove (src, src+metadata_remaining, bytes);
533

534 535 536
        /* 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
537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555
        {
            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;
556 557
            }
        }
Karl Heyes's avatar
Karl Heyes committed
558 559
        source_mp3->offset = 0;
        source_mp3->build_metadata_len = 0;
560
    }
Karl Heyes's avatar
Karl Heyes committed
561 562 563 564 565
    /* the data we have just read may of just been metadata */
    if (refbuf->len == 0)
    {
        refbuf_release (refbuf);
        return NULL;
566
    }
Karl Heyes's avatar
Karl Heyes committed
567 568
    refbuf->associated = source_mp3->metadata;
    refbuf_addref (source_mp3->metadata);
569
    refbuf->sync_point = 1;
Michael Smith's avatar
Michael Smith committed
570

Karl Heyes's avatar
Karl Heyes committed
571
    return refbuf;
Michael Smith's avatar
Michael Smith committed
572 573
}

Karl Heyes's avatar
Karl Heyes committed
574 575

static int format_mp3_create_client_data(source_t *source, client_t *client)
576
{
577
    mp3_client_data *client_mp3 = calloc(1,sizeof(mp3_client_data));
578
    char *metadata;
579
    mp3_state *source_mp3 = source->format->_state;
580

581
    if (client_mp3 == NULL)
Karl Heyes's avatar
Karl Heyes committed
582
        return -1;
583

584
    client->format_data = client_mp3;
Karl Heyes's avatar
Karl Heyes committed
585
    client->free_client_data = free_mp3_client_data;
586
    metadata = httpp_getvar(client->parser, "icy-metadata");
587 588 589 590 591 592 593 594
    if (metadata && atoi(metadata))
    {
        if (source_mp3->interval > 0)
            client_mp3->interval = source_mp3->interval;
        else
            client_mp3->interval = ICY_METADATA_INTERVAL;
    }

595

Karl Heyes's avatar
Karl Heyes committed
596
    return 0;
597
}
Michael Smith's avatar
Michael Smith committed
598

599 600 601 602 603 604 605 606

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


607 608 609 610
static void format_mp3_send_headers(format_plugin_t *self,
        source_t *source, client_t *client)
{
    int bytes;
611 612
    char *content_length;

613
    mp3_client_data *mp3data = client->format_data;
614 615
    
    client->respcode = 200;
616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632

    /* 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
633
    /* TODO: This may need to be ICY/1.0 for shoutcast-compatibility? */
634 635
    bytes = sock_write(client->con->sock, 
            "HTTP/1.0 200 OK\r\n" 
636 637
            "Content-Type: %s\r\n"
            "%s", 
638
            source->format->contenttype,
639
            content_length);
640

641 642
    if (bytes > 0)
        client->con->sent_bytes += bytes;
643

644
    if (mp3data->interval)
645
    {
646
        int bytes = sock_write(client->con->sock, "icy-metaint:%d\r\n", 
647
                mp3data->interval);
648 649 650
        if(bytes > 0)
            client->con->sent_bytes += bytes;
    }
651
    format_send_general_headers(self, source, client);
652 653
}

Karl Heyes's avatar
Karl Heyes committed
654 655 656 657 658 659 660 661 662 663 664 665 666

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;
    }
}