code.delx.au - pulseaudio/blob - src/pulsecore/tagstruct.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as
   8   published by the Free Software Foundation; either version 2.1 of the
   9   License, or (at your option) any later version.
  10
  11   PulseAudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public
  17   License along with PulseAudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <unistd.h>
  29 #include <sys/time.h>
  30 #include <stdarg.h>
  31
  32 #ifdef HAVE_NETINET_IN_H
  33 #include <netinet/in.h>
  34 #endif
  35
  36 #include <pulse/xmalloc.h>
  37
  38 #include <pulsecore/winsock.h>
  39 #include <pulsecore/macro.h>
  40
  41 #include "tagstruct.h"
  42
  43 #define MAX_TAG_SIZE (64*1024)
  44
  45 struct pa_tagstruct {
  46     uint8_t *data;
  47     size_t length, allocated;
  48     size_t rindex;
  49
  50     pa_bool_t dynamic;
  51 };
  52
  53 pa_tagstruct *pa_tagstruct_new(const uint8_t* data, size_t length) {
  54     pa_tagstruct*t;
  55
  56     pa_assert(!data || (data && length));
  57
  58     t = pa_xnew(pa_tagstruct, 1);
  59     t->data = (uint8_t*) data;
  60     t->allocated = t->length = data ? length : 0;
  61     t->rindex = 0;
  62     t->dynamic = !data;
  63
  64     return t;
  65 }
  66
  67 void pa_tagstruct_free(pa_tagstruct*t) {
  68     pa_assert(t);
  69
  70     if (t->dynamic)
  71         pa_xfree(t->data);
  72     pa_xfree(t);
  73 }
  74
  75 uint8_t* pa_tagstruct_free_data(pa_tagstruct*t, size_t *l) {
  76     uint8_t *p;
  77
  78     pa_assert(t);
  79     pa_assert(t->dynamic);
  80     pa_assert(l);
  81
  82     p = t->data;
  83     *l = t->length;
  84     pa_xfree(t);
  85     return p;
  86 }
  87
  88 static void extend(pa_tagstruct*t, size_t l) {
  89     pa_assert(t);
  90     pa_assert(t->dynamic);
  91
  92     if (t->length+l <= t->allocated)
  93         return;
  94
  95     t->data = pa_xrealloc(t->data, t->allocated = t->length+l+100);
  96 }
  97
  98 void pa_tagstruct_puts(pa_tagstruct*t, const char *s) {
  99     size_t l;
 100     pa_assert(t);
 101
 102     if (s) {
 103         l = strlen(s)+2;
 104         extend(t, l);
 105         t->data[t->length] = PA_TAG_STRING;
 106         strcpy((char*) (t->data+t->length+1), s);
 107         t->length += l;
 108     } else {
 109         extend(t, 1);
 110         t->data[t->length] = PA_TAG_STRING_NULL;
 111         t->length += 1;
 112     }
 113 }
 114
 115 void pa_tagstruct_putu32(pa_tagstruct*t, uint32_t i) {
 116     pa_assert(t);
 117
 118     extend(t, 5);
 119     t->data[t->length] = PA_TAG_U32;
 120     i = htonl(i);
 121     memcpy(t->data+t->length+1, &i, 4);
 122     t->length += 5;
 123 }
 124
 125 void pa_tagstruct_putu8(pa_tagstruct*t, uint8_t c) {
 126     pa_assert(t);
 127
 128     extend(t, 2);
 129     t->data[t->length] = PA_TAG_U8;
 130     *(t->data+t->length+1) = c;
 131     t->length += 2;
 132 }
 133
 134 void pa_tagstruct_put_sample_spec(pa_tagstruct *t, const pa_sample_spec *ss) {
 135     uint32_t rate;
 136
 137     pa_assert(t);
 138     pa_assert(ss);
 139
 140     extend(t, 7);
 141     t->data[t->length] = PA_TAG_SAMPLE_SPEC;
 142     t->data[t->length+1] = (uint8_t) ss->format;
 143     t->data[t->length+2] = ss->channels;
 144     rate = htonl(ss->rate);
 145     memcpy(t->data+t->length+3, &rate, 4);
 146     t->length += 7;
 147 }
 148
 149 void pa_tagstruct_put_arbitrary(pa_tagstruct *t, const void *p, size_t length) {
 150     uint32_t tmp;
 151
 152     pa_assert(t);
 153     pa_assert(p);
 154
 155     extend(t, 5+length);
 156     t->data[t->length] = PA_TAG_ARBITRARY;
 157     tmp = htonl((uint32_t) length);
 158     memcpy(t->data+t->length+1, &tmp, 4);
 159     if (length)
 160         memcpy(t->data+t->length+5, p, length);
 161     t->length += 5+length;
 162 }
 163
 164 void pa_tagstruct_put_boolean(pa_tagstruct*t, pa_bool_t b) {
 165     pa_assert(t);
 166
 167     extend(t, 1);
 168     t->data[t->length] = (uint8_t) (b ? PA_TAG_BOOLEAN_TRUE : PA_TAG_BOOLEAN_FALSE);
 169     t->length += 1;
 170 }
 171
 172 void pa_tagstruct_put_timeval(pa_tagstruct*t, const struct timeval *tv) {
 173     uint32_t tmp;
 174     pa_assert(t);
 175
 176     extend(t, 9);
 177     t->data[t->length] = PA_TAG_TIMEVAL;
 178     tmp = htonl((uint32_t) tv->tv_sec);
 179     memcpy(t->data+t->length+1, &tmp, 4);
 180     tmp = htonl((uint32_t) tv->tv_usec);
 181     memcpy(t->data+t->length+5, &tmp, 4);
 182     t->length += 9;
 183 }
 184
 185 void pa_tagstruct_put_usec(pa_tagstruct*t, pa_usec_t u) {
 186     uint32_t tmp;
 187
 188     pa_assert(t);
 189
 190     extend(t, 9);
 191     t->data[t->length] = PA_TAG_USEC;
 192     tmp = htonl((uint32_t) (u >> 32));
 193     memcpy(t->data+t->length+1, &tmp, 4);
 194     tmp = htonl((uint32_t) u);
 195     memcpy(t->data+t->length+5, &tmp, 4);
 196     t->length += 9;
 197 }
 198
 199 void pa_tagstruct_putu64(pa_tagstruct*t, uint64_t u) {
 200     uint32_t tmp;
 201
 202     pa_assert(t);
 203
 204     extend(t, 9);
 205     t->data[t->length] = PA_TAG_U64;
 206     tmp = htonl((uint32_t) (u >> 32));
 207     memcpy(t->data+t->length+1, &tmp, 4);
 208     tmp = htonl((uint32_t) u);
 209     memcpy(t->data+t->length+5, &tmp, 4);
 210     t->length += 9;
 211 }
 212
 213 void pa_tagstruct_puts64(pa_tagstruct*t, int64_t u) {
 214     uint32_t tmp;
 215
 216     pa_assert(t);
 217
 218     extend(t, 9);
 219     t->data[t->length] = PA_TAG_S64;
 220     tmp = htonl((uint32_t) ((uint64_t) u >> 32));
 221     memcpy(t->data+t->length+1, &tmp, 4);
 222     tmp = htonl((uint32_t) ((uint64_t) u));
 223     memcpy(t->data+t->length+5, &tmp, 4);
 224     t->length += 9;
 225 }
 226
 227 void pa_tagstruct_put_channel_map(pa_tagstruct *t, const pa_channel_map *map) {
 228     unsigned i;
 229
 230     pa_assert(t);
 231     extend(t, 2 + (size_t) map->channels);
 232
 233     t->data[t->length++] = PA_TAG_CHANNEL_MAP;
 234     t->data[t->length++] = map->channels;
 235
 236     for (i = 0; i < map->channels; i ++)
 237         t->data[t->length++] = (uint8_t) map->map[i];
 238 }
 239
 240 void pa_tagstruct_put_cvolume(pa_tagstruct *t, const pa_cvolume *cvolume) {
 241     unsigned i;
 242     pa_volume_t vol;
 243
 244     pa_assert(t);
 245     extend(t, 2 + cvolume->channels * sizeof(pa_volume_t));
 246
 247     t->data[t->length++] = PA_TAG_CVOLUME;
 248     t->data[t->length++] = cvolume->channels;
 249
 250     for (i = 0; i < cvolume->channels; i ++) {
 251         vol = htonl(cvolume->values[i]);
 252         memcpy(t->data + t->length, &vol, sizeof(pa_volume_t));
 253         t->length += sizeof(pa_volume_t);
 254     }
 255 }
 256
 257 void pa_tagstruct_put_volume(pa_tagstruct *t, pa_volume_t vol) {
 258     uint32_t u;
 259     pa_assert(t);
 260
 261     extend(t, 5);
 262     t->data[t->length] = PA_TAG_VOLUME;
 263     u = htonl((uint32_t) vol);
 264     memcpy(t->data+t->length+1, &u, 4);
 265     t->length += 5;
 266 }
 267
 268 void pa_tagstruct_put_proplist(pa_tagstruct *t, pa_proplist *p) {
 269     void *state = NULL;
 270     pa_assert(t);
 271     pa_assert(p);
 272
 273     extend(t, 1);
 274
 275     t->data[t->length++] = PA_TAG_PROPLIST;
 276
 277     for (;;) {
 278         const char *k;
 279         const void *d;
 280         size_t l;
 281
 282         if (!(k = pa_proplist_iterate(p, &state)))
 283             break;
 284
 285         pa_tagstruct_puts(t, k);
 286         pa_assert_se(pa_proplist_get(p, k, &d, &l) >= 0);
 287         pa_tagstruct_putu32(t, (uint32_t) l);
 288         pa_tagstruct_put_arbitrary(t, d, l);
 289     }
 290
 291     pa_tagstruct_puts(t, NULL);
 292 }
 293
 294 int pa_tagstruct_gets(pa_tagstruct*t, const char **s) {
 295     int error = 0;
 296     size_t n;
 297     char *c;
 298
 299     pa_assert(t);
 300     pa_assert(s);
 301
 302     if (t->rindex+1 > t->length)
 303         return -1;
 304
 305     if (t->data[t->rindex] == PA_TAG_STRING_NULL) {
 306         t->rindex++;
 307         *s = NULL;
 308         return 0;
 309     }
 310
 311     if (t->rindex+2 > t->length)
 312         return -1;
 313
 314     if (t->data[t->rindex] != PA_TAG_STRING)
 315         return -1;
 316
 317     error = 1;
 318     for (n = 0, c = (char*) (t->data+t->rindex+1); t->rindex+1+n < t->length; n++, c++)
 319         if (!*c) {
 320             error = 0;
 321             break;
 322         }
 323
 324     if (error)
 325         return -1;
 326
 327     *s = (char*) (t->data+t->rindex+1);
 328
 329     t->rindex += n+2;
 330     return 0;
 331 }
 332
 333 int pa_tagstruct_getu32(pa_tagstruct*t, uint32_t *i) {
 334     pa_assert(t);
 335     pa_assert(i);
 336
 337     if (t->rindex+5 > t->length)
 338         return -1;
 339
 340     if (t->data[t->rindex] != PA_TAG_U32)
 341         return -1;
 342
 343     memcpy(i, t->data+t->rindex+1, 4);
 344     *i = ntohl(*i);
 345     t->rindex += 5;
 346     return 0;
 347 }
 348
 349 int pa_tagstruct_getu8(pa_tagstruct*t, uint8_t *c) {
 350     pa_assert(t);
 351     pa_assert(c);
 352
 353     if (t->rindex+2 > t->length)
 354         return -1;
 355
 356     if (t->data[t->rindex] != PA_TAG_U8)
 357         return -1;
 358
 359     *c = t->data[t->rindex+1];
 360     t->rindex +=2;
 361     return 0;
 362 }
 363
 364 int pa_tagstruct_get_sample_spec(pa_tagstruct *t, pa_sample_spec *ss) {
 365     pa_assert(t);
 366     pa_assert(ss);
 367
 368     if (t->rindex+7 > t->length)
 369         return -1;
 370
 371     if (t->data[t->rindex] != PA_TAG_SAMPLE_SPEC)
 372         return -1;
 373
 374     ss->format = t->data[t->rindex+1];
 375     ss->channels = t->data[t->rindex+2];
 376     memcpy(&ss->rate, t->data+t->rindex+3, 4);
 377     ss->rate = ntohl(ss->rate);
 378
 379     t->rindex += 7;
 380     return 0;
 381 }
 382
 383 int pa_tagstruct_get_arbitrary(pa_tagstruct *t, const void **p, size_t length) {
 384     uint32_t len;
 385
 386     pa_assert(t);
 387     pa_assert(p);
 388
 389     if (t->rindex+5+length > t->length)
 390         return -1;
 391
 392     if (t->data[t->rindex] != PA_TAG_ARBITRARY)
 393         return -1;
 394
 395     memcpy(&len, t->data+t->rindex+1, 4);
 396     if (ntohl(len) != length)
 397         return -1;
 398
 399     *p = t->data+t->rindex+5;
 400     t->rindex += 5+length;
 401     return 0;
 402 }
 403
 404 int pa_tagstruct_eof(pa_tagstruct*t) {
 405     pa_assert(t);
 406
 407     return t->rindex >= t->length;
 408 }
 409
 410 const uint8_t* pa_tagstruct_data(pa_tagstruct*t, size_t *l) {
 411     pa_assert(t);
 412     pa_assert(t->dynamic);
 413     pa_assert(l);
 414
 415     *l = t->length;
 416     return t->data;
 417 }
 418
 419 int pa_tagstruct_get_boolean(pa_tagstruct*t, pa_bool_t *b) {
 420     pa_assert(t);
 421     pa_assert(b);
 422
 423     if (t->rindex+1 > t->length)
 424         return -1;
 425
 426     if (t->data[t->rindex] == PA_TAG_BOOLEAN_TRUE)
 427         *b = TRUE;
 428     else if (t->data[t->rindex] == PA_TAG_BOOLEAN_FALSE)
 429         *b = FALSE;
 430     else
 431         return -1;
 432
 433     t->rindex +=1;
 434     return 0;
 435 }
 436
 437 int pa_tagstruct_get_timeval(pa_tagstruct*t, struct timeval *tv) {
 438
 439     pa_assert(t);
 440     pa_assert(tv);
 441
 442     if (t->rindex+9 > t->length)
 443         return -1;
 444
 445     if (t->data[t->rindex] != PA_TAG_TIMEVAL)
 446         return -1;
 447
 448     memcpy(&tv->tv_sec, t->data+t->rindex+1, 4);
 449     tv->tv_sec = (time_t) ntohl((uint32_t) tv->tv_sec);
 450     memcpy(&tv->tv_usec, t->data+t->rindex+5, 4);
 451     tv->tv_usec = (suseconds_t) ntohl((uint32_t) tv->tv_usec);
 452     t->rindex += 9;
 453     return 0;
 454 }
 455
 456 int pa_tagstruct_get_usec(pa_tagstruct*t, pa_usec_t *u) {
 457     uint32_t tmp;
 458
 459     pa_assert(t);
 460     pa_assert(u);
 461
 462     if (t->rindex+9 > t->length)
 463         return -1;
 464
 465     if (t->data[t->rindex] != PA_TAG_USEC)
 466         return -1;
 467
 468     memcpy(&tmp, t->data+t->rindex+1, 4);
 469     *u = (pa_usec_t) ntohl(tmp) << 32;
 470     memcpy(&tmp, t->data+t->rindex+5, 4);
 471     *u |= (pa_usec_t) ntohl(tmp);
 472     t->rindex +=9;
 473     return 0;
 474 }
 475
 476 int pa_tagstruct_getu64(pa_tagstruct*t, uint64_t *u) {
 477     uint32_t tmp;
 478
 479     pa_assert(t);
 480     pa_assert(u);
 481
 482     if (t->rindex+9 > t->length)
 483         return -1;
 484
 485     if (t->data[t->rindex] != PA_TAG_U64)
 486         return -1;
 487
 488     memcpy(&tmp, t->data+t->rindex+1, 4);
 489     *u = (uint64_t) ntohl(tmp) << 32;
 490     memcpy(&tmp, t->data+t->rindex+5, 4);
 491     *u |= (uint64_t) ntohl(tmp);
 492     t->rindex +=9;
 493     return 0;
 494 }
 495
 496 int pa_tagstruct_gets64(pa_tagstruct*t, int64_t *u) {
 497     uint32_t tmp;
 498
 499     pa_assert(t);
 500     pa_assert(u);
 501
 502     if (t->rindex+9 > t->length)
 503         return -1;
 504
 505     if (t->data[t->rindex] != PA_TAG_S64)
 506         return -1;
 507
 508     memcpy(&tmp, t->data+t->rindex+1, 4);
 509     *u = (int64_t) ((uint64_t) ntohl(tmp) << 32);
 510     memcpy(&tmp, t->data+t->rindex+5, 4);
 511     *u |= (int64_t) ntohl(tmp);
 512     t->rindex +=9;
 513     return 0;
 514 }
 515
 516 int pa_tagstruct_get_channel_map(pa_tagstruct *t, pa_channel_map *map) {
 517     unsigned i;
 518
 519     pa_assert(t);
 520     pa_assert(map);
 521
 522     if (t->rindex+2 > t->length)
 523         return -1;
 524
 525     if (t->data[t->rindex] != PA_TAG_CHANNEL_MAP)
 526         return -1;
 527
 528     if ((map->channels = t->data[t->rindex+1]) > PA_CHANNELS_MAX)
 529         return -1;
 530
 531     if (t->rindex+2+map->channels > t->length)
 532         return -1;
 533
 534     for (i = 0; i < map->channels; i ++)
 535         map->map[i] = (int8_t) t->data[t->rindex + 2 + i];
 536
 537     t->rindex += 2 + (size_t) map->channels;
 538     return 0;
 539 }
 540
 541 int pa_tagstruct_get_cvolume(pa_tagstruct *t, pa_cvolume *cvolume) {
 542     unsigned i;
 543     pa_volume_t vol;
 544
 545     pa_assert(t);
 546     pa_assert(cvolume);
 547
 548     if (t->rindex+2 > t->length)
 549         return -1;
 550
 551     if (t->data[t->rindex] != PA_TAG_CVOLUME)
 552         return -1;
 553
 554     if ((cvolume->channels = t->data[t->rindex+1]) > PA_CHANNELS_MAX)
 555         return -1;
 556
 557     if (t->rindex+2+cvolume->channels*sizeof(pa_volume_t) > t->length)
 558         return -1;
 559
 560     for (i = 0; i < cvolume->channels; i ++) {
 561         memcpy(&vol, t->data + t->rindex + 2 + i * sizeof(pa_volume_t), sizeof(pa_volume_t));
 562         cvolume->values[i] = (pa_volume_t) ntohl(vol);
 563     }
 564
 565     t->rindex += 2 + cvolume->channels * sizeof(pa_volume_t);
 566     return 0;
 567 }
 568
 569 int pa_tagstruct_get_volume(pa_tagstruct*t, pa_volume_t *vol) {
 570     uint32_t u;
 571
 572     pa_assert(t);
 573     pa_assert(vol);
 574
 575     if (t->rindex+5 > t->length)
 576         return -1;
 577
 578     if (t->data[t->rindex] != PA_TAG_VOLUME)
 579         return -1;
 580
 581     memcpy(&u, t->data+t->rindex+1, 4);
 582     *vol = (pa_volume_t) ntohl(u);
 583
 584     t->rindex += 5;
 585     return 0;
 586 }
 587
 588 int pa_tagstruct_get_proplist(pa_tagstruct *t, pa_proplist *p) {
 589     size_t saved_rindex;
 590
 591     pa_assert(t);
 592     pa_assert(p);
 593
 594     if (t->rindex+1 > t->length)
 595         return -1;
 596
 597     if (t->data[t->rindex] != PA_TAG_PROPLIST)
 598         return -1;
 599
 600     saved_rindex = t->rindex;
 601     t->rindex++;
 602
 603     for (;;) {
 604         const char *k;
 605         const void *d;
 606         uint32_t length;
 607
 608         if (pa_tagstruct_gets(t, &k) < 0)
 609             goto fail;
 610
 611         if (!k)
 612             break;
 613
 614         if (pa_tagstruct_getu32(t, &length) < 0)
 615             goto fail;
 616
 617         if (length > MAX_TAG_SIZE)
 618             goto fail;
 619
 620         if (pa_tagstruct_get_arbitrary(t, &d, length) < 0)
 621             goto fail;
 622
 623         if (pa_proplist_set(p, k, d, length) < 0)
 624             goto fail;
 625     }
 626
 627     return 0;
 628
 629 fail:
 630     t->rindex = saved_rindex;
 631     return -1;
 632 }
 633
 634 void pa_tagstruct_put(pa_tagstruct *t, ...) {
 635     va_list va;
 636     pa_assert(t);
 637
 638     va_start(va, t);
 639
 640     for (;;) {
 641         int tag = va_arg(va, int);
 642
 643         if (tag == PA_TAG_INVALID)
 644             break;
 645
 646         switch (tag) {
 647             case PA_TAG_STRING:
 648             case PA_TAG_STRING_NULL:
 649                 pa_tagstruct_puts(t, va_arg(va, char*));
 650                 break;
 651
 652             case PA_TAG_U32:
 653                 pa_tagstruct_putu32(t, va_arg(va, uint32_t));
 654                 break;
 655
 656             case PA_TAG_U8:
 657                 pa_tagstruct_putu8(t, (uint8_t) va_arg(va, int));
 658                 break;
 659
 660             case PA_TAG_U64:
 661                 pa_tagstruct_putu64(t, va_arg(va, uint64_t));
 662                 break;
 663
 664             case PA_TAG_SAMPLE_SPEC:
 665                 pa_tagstruct_put_sample_spec(t, va_arg(va, pa_sample_spec*));
 666                 break;
 667
 668             case PA_TAG_ARBITRARY: {
 669                 void *p = va_arg(va, void*);
 670                 size_t size = va_arg(va, size_t);
 671                 pa_tagstruct_put_arbitrary(t, p, size);
 672                 break;
 673             }
 674
 675             case PA_TAG_BOOLEAN_TRUE:
 676             case PA_TAG_BOOLEAN_FALSE:
 677                 pa_tagstruct_put_boolean(t, va_arg(va, int));
 678                 break;
 679
 680             case PA_TAG_TIMEVAL:
 681                 pa_tagstruct_put_timeval(t, va_arg(va, struct timeval*));
 682                 break;
 683
 684             case PA_TAG_USEC:
 685                 pa_tagstruct_put_usec(t, va_arg(va, pa_usec_t));
 686                 break;
 687
 688             case PA_TAG_CHANNEL_MAP:
 689                 pa_tagstruct_put_channel_map(t, va_arg(va, pa_channel_map *));
 690                 break;
 691
 692             case PA_TAG_CVOLUME:
 693                 pa_tagstruct_put_cvolume(t, va_arg(va, pa_cvolume *));
 694                 break;
 695
 696             case PA_TAG_VOLUME:
 697                 pa_tagstruct_put_volume(t, va_arg(va, pa_volume_t));
 698                 break;
 699
 700             case PA_TAG_PROPLIST:
 701                 pa_tagstruct_put_proplist(t, va_arg(va, pa_proplist *));
 702                 break;
 703
 704             default:
 705                 pa_assert_not_reached();
 706         }
 707     }
 708
 709     va_end(va);
 710 }
 711
 712 int pa_tagstruct_get(pa_tagstruct *t, ...) {
 713     va_list va;
 714     int ret = 0;
 715
 716     pa_assert(t);
 717
 718     va_start(va, t);
 719     while (ret == 0) {
 720         int tag = va_arg(va, int);
 721
 722         if (tag == PA_TAG_INVALID)
 723             break;
 724
 725         switch (tag) {
 726             case PA_TAG_STRING:
 727             case PA_TAG_STRING_NULL:
 728                 ret = pa_tagstruct_gets(t, va_arg(va, const char**));
 729                 break;
 730
 731             case PA_TAG_U32:
 732                 ret = pa_tagstruct_getu32(t, va_arg(va, uint32_t*));
 733                 break;
 734
 735             case PA_TAG_U8:
 736                 ret = pa_tagstruct_getu8(t, va_arg(va, uint8_t*));
 737                 break;
 738
 739             case PA_TAG_U64:
 740                 ret = pa_tagstruct_getu64(t, va_arg(va, uint64_t*));
 741                 break;
 742
 743             case PA_TAG_SAMPLE_SPEC:
 744                 ret = pa_tagstruct_get_sample_spec(t, va_arg(va, pa_sample_spec*));
 745                 break;
 746
 747             case PA_TAG_ARBITRARY: {
 748                 const void **p = va_arg(va, const void**);
 749                 size_t size = va_arg(va, size_t);
 750                 ret = pa_tagstruct_get_arbitrary(t, p, size);
 751                 break;
 752             }
 753
 754             case PA_TAG_BOOLEAN_TRUE:
 755             case PA_TAG_BOOLEAN_FALSE:
 756                 ret = pa_tagstruct_get_boolean(t, va_arg(va, pa_bool_t*));
 757                 break;
 758
 759             case PA_TAG_TIMEVAL:
 760                 ret = pa_tagstruct_get_timeval(t, va_arg(va, struct timeval*));
 761                 break;
 762
 763             case PA_TAG_USEC:
 764                 ret = pa_tagstruct_get_usec(t, va_arg(va, pa_usec_t*));
 765                 break;
 766
 767             case PA_TAG_CHANNEL_MAP:
 768                 ret = pa_tagstruct_get_channel_map(t, va_arg(va, pa_channel_map *));
 769                 break;
 770
 771             case PA_TAG_CVOLUME:
 772                 ret = pa_tagstruct_get_cvolume(t, va_arg(va, pa_cvolume *));
 773                 break;
 774
 775             case PA_TAG_VOLUME:
 776                 ret = pa_tagstruct_get_volume(t, va_arg(va, pa_volume_t *));
 777                 break;
 778
 779             case PA_TAG_PROPLIST:
 780                 ret = pa_tagstruct_get_proplist(t, va_arg(va, pa_proplist *));
 781                 break;
 782
 783             default:
 784                 pa_assert_not_reached();
 785         }
 786
 787     }
 788
 789     va_end(va);
 790     return ret;
 791 }