code.delx.au - pulseaudio/blob - src/pulse/stream.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   6
   7   PulseAudio is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU Lesser General Public License as published
   9   by the Free Software Foundation; either version 2 of the License,
  10   or (at your option) any later version.
  11
  12   PulseAudio is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with PulseAudio; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  20   USA.
  21 ***/
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <string.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30
  31 #include <pulse/def.h>
  32 #include <pulse/timeval.h>
  33 #include <pulse/xmalloc.h>
  34
  35 #include <pulsecore/pstream-util.h>
  36 #include <pulsecore/log.h>
  37 #include <pulsecore/hashmap.h>
  38 #include <pulsecore/macro.h>
  39 #include <pulsecore/rtclock.h>
  40
  41 #include "internal.h"
  42
  43 #define LATENCY_IPOL_INTERVAL_USEC (333*PA_USEC_PER_MSEC)
  44
  45 #define SMOOTHER_ADJUST_TIME (1000*PA_USEC_PER_MSEC)
  46 #define SMOOTHER_HISTORY_TIME (5000*PA_USEC_PER_MSEC)
  47 #define SMOOTHER_MIN_HISTORY (4)
  48
  49 pa_stream *pa_stream_new(pa_context *c, const char *name, const pa_sample_spec *ss, const pa_channel_map *map) {
  50     return pa_stream_new_with_proplist(c, name, ss, map, NULL);
  51 }
  52
  53 static void reset_callbacks(pa_stream *s) {
  54     s->read_callback = NULL;
  55     s->read_userdata = NULL;
  56     s->write_callback = NULL;
  57     s->write_userdata = NULL;
  58     s->state_callback = NULL;
  59     s->state_userdata = NULL;
  60     s->overflow_callback = NULL;
  61     s->overflow_userdata = NULL;
  62     s->underflow_callback = NULL;
  63     s->underflow_userdata = NULL;
  64     s->latency_update_callback = NULL;
  65     s->latency_update_userdata = NULL;
  66     s->moved_callback = NULL;
  67     s->moved_userdata = NULL;
  68     s->suspended_callback = NULL;
  69     s->suspended_userdata = NULL;
  70     s->started_callback = NULL;
  71     s->started_userdata = NULL;
  72 }
  73
  74 pa_stream *pa_stream_new_with_proplist(
  75         pa_context *c,
  76         const char *name,
  77         const pa_sample_spec *ss,
  78         const pa_channel_map *map,
  79         pa_proplist *p) {
  80
  81     pa_stream *s;
  82     int i;
  83     pa_channel_map tmap;
  84
  85     pa_assert(c);
  86     pa_assert(PA_REFCNT_VALUE(c) >= 1);
  87
  88     PA_CHECK_VALIDITY_RETURN_NULL(c, ss && pa_sample_spec_valid(ss), PA_ERR_INVALID);
  89     PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 12 || (ss->format != PA_SAMPLE_S32LE && ss->format != PA_SAMPLE_S32BE), PA_ERR_NOTSUPPORTED);
  90     PA_CHECK_VALIDITY_RETURN_NULL(c, !map || (pa_channel_map_valid(map) && map->channels == ss->channels), PA_ERR_INVALID);
  91     PA_CHECK_VALIDITY_RETURN_NULL(c, name || (p && pa_proplist_contains(p, PA_PROP_MEDIA_NAME)), PA_ERR_INVALID);
  92
  93     if (!map)
  94         PA_CHECK_VALIDITY_RETURN_NULL(c, map = pa_channel_map_init_auto(&tmap, ss->channels, PA_CHANNEL_MAP_DEFAULT), PA_ERR_INVALID);
  95
  96     s = pa_xnew(pa_stream, 1);
  97     PA_REFCNT_INIT(s);
  98     s->context = c;
  99     s->mainloop = c->mainloop;
 100
 101     s->direction = PA_STREAM_NODIRECTION;
 102     s->state = PA_STREAM_UNCONNECTED;
 103     s->flags = 0;
 104
 105     s->sample_spec = *ss;
 106     s->channel_map = *map;
 107
 108     s->direct_on_input = PA_INVALID_INDEX;
 109
 110     s->proplist = p ? pa_proplist_copy(p) : pa_proplist_new();
 111     if (name)
 112         pa_proplist_sets(s->proplist, PA_PROP_MEDIA_NAME, name);
 113
 114     s->channel = 0;
 115     s->channel_valid = FALSE;
 116     s->syncid = c->csyncid++;
 117     s->stream_index = PA_INVALID_INDEX;
 118
 119     s->requested_bytes = 0;
 120     memset(&s->buffer_attr, 0, sizeof(s->buffer_attr));
 121
 122     /* We initialize der target length here, so that if the user
 123      * passes no explicit buffering metrics the default is similar to
 124      * what older PA versions provided. */
 125
 126     s->buffer_attr.maxlength = (uint32_t) -1;
 127     s->buffer_attr.tlength = (uint32_t) pa_usec_to_bytes(250*PA_USEC_PER_MSEC, ss); /* 250ms of buffering */
 128     s->buffer_attr.minreq = (uint32_t) -1;
 129     s->buffer_attr.prebuf = (uint32_t) -1;
 130     s->buffer_attr.fragsize = (uint32_t) -1;
 131
 132     s->device_index = PA_INVALID_INDEX;
 133     s->device_name = NULL;
 134     s->suspended = FALSE;
 135
 136     pa_memchunk_reset(&s->peek_memchunk);
 137     s->peek_data = NULL;
 138
 139     s->record_memblockq = NULL;
 140
 141     s->corked = FALSE;
 142
 143     memset(&s->timing_info, 0, sizeof(s->timing_info));
 144     s->timing_info_valid = FALSE;
 145
 146     s->previous_time = 0;
 147
 148     s->read_index_not_before = 0;
 149     s->write_index_not_before = 0;
 150     for (i = 0; i < PA_MAX_WRITE_INDEX_CORRECTIONS; i++)
 151         s->write_index_corrections[i].valid = 0;
 152     s->current_write_index_correction = 0;
 153
 154     s->auto_timing_update_event = NULL;
 155     s->auto_timing_update_requested = FALSE;
 156
 157     reset_callbacks(s);
 158
 159     s->smoother = NULL;
 160
 161     /* Refcounting is strictly one-way: from the "bigger" to the "smaller" object. */
 162     PA_LLIST_PREPEND(pa_stream, c->streams, s);
 163     pa_stream_ref(s);
 164
 165     return s;
 166 }
 167
 168 static void stream_unlink(pa_stream *s) {
 169     pa_operation *o, *n;
 170     pa_assert(s);
 171
 172     if (!s->context)
 173         return;
 174
 175     /* Detach from context */
 176
 177     /* Unref all operatio object that point to us */
 178     for (o = s->context->operations; o; o = n) {
 179         n = o->next;
 180
 181         if (o->stream == s)
 182             pa_operation_cancel(o);
 183     }
 184
 185     /* Drop all outstanding replies for this stream */
 186     if (s->context->pdispatch)
 187         pa_pdispatch_unregister_reply(s->context->pdispatch, s);
 188
 189     if (s->channel_valid) {
 190         pa_dynarray_put((s->direction == PA_STREAM_PLAYBACK) ? s->context->playback_streams : s->context->record_streams, s->channel, NULL);
 191         s->channel = 0;
 192         s->channel_valid = FALSE;
 193     }
 194
 195     PA_LLIST_REMOVE(pa_stream, s->context->streams, s);
 196     pa_stream_unref(s);
 197
 198     s->context = NULL;
 199
 200     if (s->auto_timing_update_event) {
 201         pa_assert(s->mainloop);
 202         s->mainloop->time_free(s->auto_timing_update_event);
 203     }
 204
 205     reset_callbacks(s);
 206 }
 207
 208 static void stream_free(pa_stream *s) {
 209     pa_assert(s);
 210
 211     stream_unlink(s);
 212
 213     if (s->peek_memchunk.memblock) {
 214         if (s->peek_data)
 215             pa_memblock_release(s->peek_memchunk.memblock);
 216         pa_memblock_unref(s->peek_memchunk.memblock);
 217     }
 218
 219     if (s->record_memblockq)
 220         pa_memblockq_free(s->record_memblockq);
 221
 222     if (s->proplist)
 223         pa_proplist_free(s->proplist);
 224
 225     if (s->smoother)
 226         pa_smoother_free(s->smoother);
 227
 228     pa_xfree(s->device_name);
 229     pa_xfree(s);
 230 }
 231
 232 void pa_stream_unref(pa_stream *s) {
 233     pa_assert(s);
 234     pa_assert(PA_REFCNT_VALUE(s) >= 1);
 235
 236     if (PA_REFCNT_DEC(s) <= 0)
 237         stream_free(s);
 238 }
 239
 240 pa_stream* pa_stream_ref(pa_stream *s) {
 241     pa_assert(s);
 242     pa_assert(PA_REFCNT_VALUE(s) >= 1);
 243
 244     PA_REFCNT_INC(s);
 245     return s;
 246 }
 247
 248 pa_stream_state_t pa_stream_get_state(pa_stream *s) {
 249     pa_assert(s);
 250     pa_assert(PA_REFCNT_VALUE(s) >= 1);
 251
 252     return s->state;
 253 }
 254
 255 pa_context* pa_stream_get_context(pa_stream *s) {
 256     pa_assert(s);
 257     pa_assert(PA_REFCNT_VALUE(s) >= 1);
 258
 259     return s->context;
 260 }
 261
 262 uint32_t pa_stream_get_index(pa_stream *s) {
 263     pa_assert(s);
 264     pa_assert(PA_REFCNT_VALUE(s) >= 1);
 265
 266     PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, PA_INVALID_INDEX);
 267
 268     return s->stream_index;
 269 }
 270
 271 void pa_stream_set_state(pa_stream *s, pa_stream_state_t st) {
 272     pa_assert(s);
 273     pa_assert(PA_REFCNT_VALUE(s) >= 1);
 274
 275     if (s->state == st)
 276         return;
 277
 278     pa_stream_ref(s);
 279
 280     s->state = st;
 281
 282     if (s->state_callback)
 283         s->state_callback(s, s->state_userdata);
 284
 285     if ((st == PA_STREAM_FAILED || st == PA_STREAM_TERMINATED))
 286         stream_unlink(s);
 287
 288     pa_stream_unref(s);
 289 }
 290
 291 static void request_auto_timing_update(pa_stream *s, pa_bool_t force) {
 292     pa_assert(s);
 293     pa_assert(PA_REFCNT_VALUE(s) >= 1);
 294
 295     if (!(s->flags & PA_STREAM_AUTO_TIMING_UPDATE))
 296         return;
 297
 298     if (s->state == PA_STREAM_READY &&
 299         (force || !s->auto_timing_update_requested)) {
 300         pa_operation *o;
 301
 302 /*         pa_log("automatically requesting new timing data"); */
 303
 304         if ((o = pa_stream_update_timing_info(s, NULL, NULL))) {
 305             pa_operation_unref(o);
 306             s->auto_timing_update_requested = TRUE;
 307         }
 308     }
 309
 310     if (s->auto_timing_update_event) {
 311         struct timeval next;
 312         pa_gettimeofday(&next);
 313         pa_timeval_add(&next, LATENCY_IPOL_INTERVAL_USEC);
 314         s->mainloop->time_restart(s->auto_timing_update_event, &next);
 315     }
 316 }
 317
 318 void pa_command_stream_killed(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
 319     pa_context *c = userdata;
 320     pa_stream *s;
 321     uint32_t channel;
 322
 323     pa_assert(pd);
 324     pa_assert(command == PA_COMMAND_PLAYBACK_STREAM_KILLED || command == PA_COMMAND_RECORD_STREAM_KILLED);
 325     pa_assert(t);
 326     pa_assert(c);
 327     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 328
 329     pa_context_ref(c);
 330
 331     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 332         !pa_tagstruct_eof(t)) {
 333         pa_context_fail(c, PA_ERR_PROTOCOL);
 334         goto finish;
 335     }
 336
 337     if (!(s = pa_dynarray_get(command == PA_COMMAND_PLAYBACK_STREAM_KILLED ? c->playback_streams : c->record_streams, channel)))
 338         goto finish;
 339
 340     if (s->state != PA_STREAM_READY)
 341         goto finish;
 342
 343     pa_context_set_error(c, PA_ERR_KILLED);
 344     pa_stream_set_state(s, PA_STREAM_FAILED);
 345
 346 finish:
 347     pa_context_unref(c);
 348 }
 349
 350 static void check_smoother_status(pa_stream *s, pa_bool_t aposteriori, pa_bool_t force_start, pa_bool_t force_stop) {
 351     pa_usec_t x;
 352
 353     pa_assert(s);
 354     pa_assert(!force_start || !force_stop);
 355
 356     if (!s->smoother)
 357         return;
 358
 359     x = pa_rtclock_usec();
 360
 361     if (s->timing_info_valid) {
 362         if (aposteriori)
 363             x -= s->timing_info.transport_usec;
 364         else
 365             x += s->timing_info.transport_usec;
 366
 367         if (s->direction == PA_STREAM_PLAYBACK)
 368             /* it takes a while until the pause/resume is actually
 369              * audible */
 370             x += s->timing_info.sink_usec;
 371         else
 372             /* Data froma  while back will be dropped */
 373             x -= s->timing_info.source_usec;
 374     }
 375
 376     if (s->suspended || s->corked || force_stop)
 377         pa_smoother_pause(s->smoother, x);
 378     else if (force_start || s->buffer_attr.prebuf == 0)
 379         pa_smoother_resume(s->smoother, x);
 380
 381     /* Please note that we have no idea if playback actually started
 382      * if prebuf is non-zero! */
 383 }
 384
 385 void pa_command_stream_moved(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
 386     pa_context *c = userdata;
 387     pa_stream *s;
 388     uint32_t channel;
 389     const char *dn;
 390     pa_bool_t suspended;
 391     uint32_t di;
 392     pa_usec_t usec;
 393     uint32_t maxlength = 0, fragsize = 0, minreq = 0, tlength = 0, prebuf = 0;
 394
 395     pa_assert(pd);
 396     pa_assert(command == PA_COMMAND_PLAYBACK_STREAM_MOVED || command == PA_COMMAND_RECORD_STREAM_MOVED);
 397     pa_assert(t);
 398     pa_assert(c);
 399     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 400
 401     pa_context_ref(c);
 402
 403     if (c->version < 12) {
 404         pa_context_fail(c, PA_ERR_PROTOCOL);
 405         goto finish;
 406     }
 407
 408     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 409         pa_tagstruct_getu32(t, &di) < 0 ||
 410         pa_tagstruct_gets(t, &dn) < 0 ||
 411         pa_tagstruct_get_boolean(t, &suspended) < 0) {
 412         pa_context_fail(c, PA_ERR_PROTOCOL);
 413         goto finish;
 414     }
 415
 416     if (c->version >= 13) {
 417
 418         if (command == PA_COMMAND_RECORD_STREAM_MOVED) {
 419             if (pa_tagstruct_getu32(t, &maxlength) < 0 ||
 420                 pa_tagstruct_getu32(t, &fragsize) < 0 ||
 421                 pa_tagstruct_get_usec(t, &usec) < 0) {
 422                 pa_context_fail(c, PA_ERR_PROTOCOL);
 423                 goto finish;
 424             }
 425         } else {
 426             if (pa_tagstruct_getu32(t, &maxlength) < 0 ||
 427                 pa_tagstruct_getu32(t, &tlength) < 0 ||
 428                 pa_tagstruct_getu32(t, &prebuf) < 0 ||
 429                 pa_tagstruct_getu32(t, &minreq) < 0 ||
 430                 pa_tagstruct_get_usec(t, &usec) < 0) {
 431                 pa_context_fail(c, PA_ERR_PROTOCOL);
 432                 goto finish;
 433             }
 434         }
 435     }
 436
 437     if (!pa_tagstruct_eof(t)) {
 438         pa_context_fail(c, PA_ERR_PROTOCOL);
 439         goto finish;
 440     }
 441
 442     if (!dn || di == PA_INVALID_INDEX) {
 443         pa_context_fail(c, PA_ERR_PROTOCOL);
 444         goto finish;
 445     }
 446
 447     if (!(s = pa_dynarray_get(command == PA_COMMAND_PLAYBACK_STREAM_MOVED ? c->playback_streams : c->record_streams, channel)))
 448         goto finish;
 449
 450     if (s->state != PA_STREAM_READY)
 451         goto finish;
 452
 453     if (c->version >= 13) {
 454         if (s->direction == PA_STREAM_RECORD)
 455             s->timing_info.configured_source_usec = usec;
 456         else
 457             s->timing_info.configured_sink_usec = usec;
 458
 459         s->buffer_attr.maxlength = maxlength;
 460         s->buffer_attr.fragsize = fragsize;
 461         s->buffer_attr.tlength = tlength;
 462         s->buffer_attr.prebuf = prebuf;
 463         s->buffer_attr.minreq = minreq;
 464     }
 465
 466     pa_xfree(s->device_name);
 467     s->device_name = pa_xstrdup(dn);
 468     s->device_index = di;
 469
 470     s->suspended = suspended;
 471
 472     check_smoother_status(s, TRUE, FALSE, FALSE);
 473     request_auto_timing_update(s, TRUE);
 474
 475     if (s->moved_callback)
 476         s->moved_callback(s, s->moved_userdata);
 477
 478 finish:
 479     pa_context_unref(c);
 480 }
 481
 482 void pa_command_stream_suspended(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
 483     pa_context *c = userdata;
 484     pa_stream *s;
 485     uint32_t channel;
 486     pa_bool_t suspended;
 487
 488     pa_assert(pd);
 489     pa_assert(command == PA_COMMAND_PLAYBACK_STREAM_SUSPENDED || command == PA_COMMAND_RECORD_STREAM_SUSPENDED);
 490     pa_assert(t);
 491     pa_assert(c);
 492     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 493
 494     pa_context_ref(c);
 495
 496     if (c->version < 12) {
 497         pa_context_fail(c, PA_ERR_PROTOCOL);
 498         goto finish;
 499     }
 500
 501     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 502         pa_tagstruct_get_boolean(t, &suspended) < 0 ||
 503         !pa_tagstruct_eof(t)) {
 504         pa_context_fail(c, PA_ERR_PROTOCOL);
 505         goto finish;
 506     }
 507
 508     if (!(s = pa_dynarray_get(command == PA_COMMAND_PLAYBACK_STREAM_SUSPENDED ? c->playback_streams : c->record_streams, channel)))
 509         goto finish;
 510
 511     if (s->state != PA_STREAM_READY)
 512         goto finish;
 513
 514     s->suspended = suspended;
 515
 516     check_smoother_status(s, TRUE, FALSE, FALSE);
 517     request_auto_timing_update(s, TRUE);
 518
 519     if (s->suspended_callback)
 520         s->suspended_callback(s, s->suspended_userdata);
 521
 522 finish:
 523     pa_context_unref(c);
 524 }
 525
 526 void pa_command_stream_started(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
 527     pa_context *c = userdata;
 528     pa_stream *s;
 529     uint32_t channel;
 530
 531     pa_assert(pd);
 532     pa_assert(command == PA_COMMAND_STARTED);
 533     pa_assert(t);
 534     pa_assert(c);
 535     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 536
 537     pa_context_ref(c);
 538
 539     if (c->version < 13) {
 540         pa_context_fail(c, PA_ERR_PROTOCOL);
 541         goto finish;
 542     }
 543
 544     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 545         !pa_tagstruct_eof(t)) {
 546         pa_context_fail(c, PA_ERR_PROTOCOL);
 547         goto finish;
 548     }
 549
 550     if (!(s = pa_dynarray_get(c->playback_streams, channel)))
 551         goto finish;
 552
 553     if (s->state != PA_STREAM_READY)
 554         goto finish;
 555
 556     check_smoother_status(s, TRUE, TRUE, FALSE);
 557     request_auto_timing_update(s, TRUE);
 558
 559     if (s->started_callback)
 560         s->started_callback(s, s->started_userdata);
 561
 562 finish:
 563     pa_context_unref(c);
 564 }
 565
 566 void pa_command_request(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
 567     pa_stream *s;
 568     pa_context *c = userdata;
 569     uint32_t bytes, channel;
 570
 571     pa_assert(pd);
 572     pa_assert(command == PA_COMMAND_REQUEST);
 573     pa_assert(t);
 574     pa_assert(c);
 575     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 576
 577     pa_context_ref(c);
 578
 579     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 580         pa_tagstruct_getu32(t, &bytes) < 0 ||
 581         !pa_tagstruct_eof(t)) {
 582         pa_context_fail(c, PA_ERR_PROTOCOL);
 583         goto finish;
 584     }
 585
 586     if (!(s = pa_dynarray_get(c->playback_streams, channel)))
 587         goto finish;
 588
 589     if (s->state != PA_STREAM_READY)
 590         goto finish;
 591
 592     s->requested_bytes += bytes;
 593
 594     if (s->requested_bytes > 0 && s->write_callback)
 595         s->write_callback(s, s->requested_bytes, s->write_userdata);
 596
 597 finish:
 598     pa_context_unref(c);
 599 }
 600
 601 void pa_command_overflow_or_underflow(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
 602     pa_stream *s;
 603     pa_context *c = userdata;
 604     uint32_t channel;
 605
 606     pa_assert(pd);
 607     pa_assert(command == PA_COMMAND_OVERFLOW || command == PA_COMMAND_UNDERFLOW);
 608     pa_assert(t);
 609     pa_assert(c);
 610     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 611
 612     pa_context_ref(c);
 613
 614     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 615         !pa_tagstruct_eof(t)) {
 616         pa_context_fail(c, PA_ERR_PROTOCOL);
 617         goto finish;
 618     }
 619
 620     if (!(s = pa_dynarray_get(c->playback_streams, channel)))
 621         goto finish;
 622
 623     if (s->state != PA_STREAM_READY)
 624         goto finish;
 625
 626     if (s->buffer_attr.prebuf > 0)
 627         check_smoother_status(s, TRUE, FALSE, TRUE);
 628
 629     request_auto_timing_update(s, TRUE);
 630
 631     if (command == PA_COMMAND_OVERFLOW) {
 632         if (s->overflow_callback)
 633             s->overflow_callback(s, s->overflow_userdata);
 634     } else if (command == PA_COMMAND_UNDERFLOW) {
 635         if (s->underflow_callback)
 636             s->underflow_callback(s, s->underflow_userdata);
 637     }
 638
 639  finish:
 640     pa_context_unref(c);
 641 }
 642
 643 static void invalidate_indexes(pa_stream *s, pa_bool_t r, pa_bool_t w) {
 644     pa_assert(s);
 645     pa_assert(PA_REFCNT_VALUE(s) >= 1);
 646
 647 /*     pa_log("invalidate r:%u w:%u tag:%u", r, w, s->context->ctag); */
 648
 649     if (s->state != PA_STREAM_READY)
 650         return;
 651
 652     if (w) {
 653         s->write_index_not_before = s->context->ctag;
 654
 655         if (s->timing_info_valid)
 656             s->timing_info.write_index_corrupt = TRUE;
 657
 658 /*         pa_log("write_index invalidated"); */
 659     }
 660
 661     if (r) {
 662         s->read_index_not_before = s->context->ctag;
 663
 664         if (s->timing_info_valid)
 665             s->timing_info.read_index_corrupt = TRUE;
 666
 667 /*         pa_log("read_index invalidated"); */
 668     }
 669
 670     request_auto_timing_update(s, TRUE);
 671 }
 672
 673 static void auto_timing_update_callback(pa_mainloop_api *m, pa_time_event *e, const struct timeval *tv, void *userdata) {
 674     pa_stream *s = userdata;
 675
 676     pa_assert(s);
 677     pa_assert(PA_REFCNT_VALUE(s) >= 1);
 678
 679     pa_stream_ref(s);
 680     request_auto_timing_update(s, FALSE);
 681     pa_stream_unref(s);
 682 }
 683
 684 static void create_stream_complete(pa_stream *s) {
 685     pa_assert(s);
 686     pa_assert(PA_REFCNT_VALUE(s) >= 1);
 687     pa_assert(s->state == PA_STREAM_CREATING);
 688
 689     pa_stream_set_state(s, PA_STREAM_READY);
 690
 691     if (s->requested_bytes > 0 && s->write_callback)
 692         s->write_callback(s, s->requested_bytes, s->write_userdata);
 693
 694     if (s->flags & PA_STREAM_AUTO_TIMING_UPDATE) {
 695         struct timeval tv;
 696         pa_gettimeofday(&tv);
 697         tv.tv_usec += (suseconds_t) LATENCY_IPOL_INTERVAL_USEC; /* every 100 ms */
 698         pa_assert(!s->auto_timing_update_event);
 699         s->auto_timing_update_event = s->mainloop->time_new(s->mainloop, &tv, &auto_timing_update_callback, s);
 700
 701         request_auto_timing_update(s, TRUE);
 702     }
 703
 704     check_smoother_status(s, TRUE, FALSE, FALSE);
 705 }
 706
 707 static void automatic_buffer_attr(pa_stream *s, pa_buffer_attr *attr, const pa_sample_spec *ss) {
 708     pa_assert(s);
 709     pa_assert(attr);
 710     pa_assert(ss);
 711
 712     if (s->context->version >= 13)
 713         return;
 714
 715     /* Version older than 0.9.10 didn't do server side buffer_attr
 716      * selection, hence we have to fake it on the client side. */
 717
 718     /* We choose fairly conservative values here, to not confuse
 719      * old clients with extremely large playback buffers */
 720
 721     if (attr->maxlength == (uint32_t) -1)
 722         attr->maxlength = 4*1024*1024; /* 4MB is the maximum queue length PulseAudio <= 0.9.9 supported. */
 723
 724     if (attr->tlength == (uint32_t) -1)
 725         attr->tlength = (uint32_t) pa_usec_to_bytes(250*PA_USEC_PER_MSEC, ss); /* 250ms of buffering */
 726
 727     if (attr->minreq == (uint32_t) -1)
 728         attr->minreq = (attr->tlength)/5; /* Ask for more data when there are only 200ms left in the playback buffer */
 729
 730     if (attr->prebuf == (uint32_t) -1)
 731         attr->prebuf = attr->tlength; /* Start to play only when the playback is fully filled up once */
 732
 733     if (attr->fragsize == (uint32_t) -1)
 734         attr->fragsize = attr->tlength; /* Pass data to the app only when the buffer is filled up once */
 735 }
 736
 737 void pa_create_stream_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
 738     pa_stream *s = userdata;
 739
 740     pa_assert(pd);
 741     pa_assert(s);
 742     pa_assert(PA_REFCNT_VALUE(s) >= 1);
 743     pa_assert(s->state == PA_STREAM_CREATING);
 744
 745     pa_stream_ref(s);
 746
 747     if (command != PA_COMMAND_REPLY) {
 748         if (pa_context_handle_error(s->context, command, t, FALSE) < 0)
 749             goto finish;
 750
 751         pa_stream_set_state(s, PA_STREAM_FAILED);
 752         goto finish;
 753     }
 754
 755     if (pa_tagstruct_getu32(t, &s->channel) < 0 ||
 756         s->channel == PA_INVALID_INDEX ||
 757         ((s->direction != PA_STREAM_UPLOAD) && (pa_tagstruct_getu32(t, &s->stream_index) < 0 ||  s->stream_index == PA_INVALID_INDEX)) ||
 758         ((s->direction != PA_STREAM_RECORD) && pa_tagstruct_getu32(t, &s->requested_bytes) < 0)) {
 759         pa_context_fail(s->context, PA_ERR_PROTOCOL);
 760         goto finish;
 761     }
 762
 763     if (s->context->version >= 9) {
 764         if (s->direction == PA_STREAM_PLAYBACK) {
 765             if (pa_tagstruct_getu32(t, &s->buffer_attr.maxlength) < 0 ||
 766                 pa_tagstruct_getu32(t, &s->buffer_attr.tlength) < 0 ||
 767                 pa_tagstruct_getu32(t, &s->buffer_attr.prebuf) < 0 ||
 768                 pa_tagstruct_getu32(t, &s->buffer_attr.minreq) < 0) {
 769                 pa_context_fail(s->context, PA_ERR_PROTOCOL);
 770                 goto finish;
 771             }
 772         } else if (s->direction == PA_STREAM_RECORD) {
 773             if (pa_tagstruct_getu32(t, &s->buffer_attr.maxlength) < 0 ||
 774                 pa_tagstruct_getu32(t, &s->buffer_attr.fragsize) < 0) {
 775                 pa_context_fail(s->context, PA_ERR_PROTOCOL);
 776                 goto finish;
 777             }
 778         }
 779     }
 780
 781     if (s->context->version >= 12 && s->direction != PA_STREAM_UPLOAD) {
 782         pa_sample_spec ss;
 783         pa_channel_map cm;
 784         const char *dn = NULL;
 785         pa_bool_t suspended;
 786
 787         if (pa_tagstruct_get_sample_spec(t, &ss) < 0 ||
 788             pa_tagstruct_get_channel_map(t, &cm) < 0 ||
 789             pa_tagstruct_getu32(t, &s->device_index) < 0 ||
 790             pa_tagstruct_gets(t, &dn) < 0 ||
 791             pa_tagstruct_get_boolean(t, &suspended) < 0) {
 792             pa_context_fail(s->context, PA_ERR_PROTOCOL);
 793             goto finish;
 794         }
 795
 796         if (!dn || s->device_index == PA_INVALID_INDEX ||
 797             ss.channels != cm.channels ||
 798             !pa_channel_map_valid(&cm) ||
 799             !pa_sample_spec_valid(&ss) ||
 800             (!(s->flags & PA_STREAM_FIX_FORMAT) && ss.format != s->sample_spec.format) ||
 801             (!(s->flags & PA_STREAM_FIX_RATE) && ss.rate != s->sample_spec.rate) ||
 802             (!(s->flags & PA_STREAM_FIX_CHANNELS) && !pa_channel_map_equal(&cm, &s->channel_map))) {
 803             pa_context_fail(s->context, PA_ERR_PROTOCOL);
 804             goto finish;
 805         }
 806
 807         pa_xfree(s->device_name);
 808         s->device_name = pa_xstrdup(dn);
 809         s->suspended = suspended;
 810
 811         s->channel_map = cm;
 812         s->sample_spec = ss;
 813     }
 814
 815     if (s->context->version >= 13 && s->direction != PA_STREAM_UPLOAD) {
 816         pa_usec_t usec;
 817
 818         if (pa_tagstruct_get_usec(t, &usec) < 0) {
 819             pa_context_fail(s->context, PA_ERR_PROTOCOL);
 820             goto finish;
 821         }
 822
 823         if (s->direction == PA_STREAM_RECORD)
 824             s->timing_info.configured_source_usec = usec;
 825         else
 826             s->timing_info.configured_sink_usec = usec;
 827     }
 828
 829     if (!pa_tagstruct_eof(t)) {
 830         pa_context_fail(s->context, PA_ERR_PROTOCOL);
 831         goto finish;
 832     }
 833
 834     if (s->direction == PA_STREAM_RECORD) {
 835         pa_assert(!s->record_memblockq);
 836
 837         s->record_memblockq = pa_memblockq_new(
 838                 0,
 839                 s->buffer_attr.maxlength,
 840                 0,
 841                 pa_frame_size(&s->sample_spec),
 842                 1,
 843                 0,
 844                 0,
 845                 NULL);
 846     }
 847
 848     s->channel_valid = TRUE;
 849     pa_dynarray_put((s->direction == PA_STREAM_RECORD) ? s->context->record_streams : s->context->playback_streams, s->channel, s);
 850
 851     create_stream_complete(s);
 852
 853 finish:
 854     pa_stream_unref(s);
 855 }
 856
 857 static int create_stream(
 858         pa_stream_direction_t direction,
 859         pa_stream *s,
 860         const char *dev,
 861         const pa_buffer_attr *attr,
 862         pa_stream_flags_t flags,
 863         const pa_cvolume *volume,
 864         pa_stream *sync_stream) {
 865
 866     pa_tagstruct *t;
 867     uint32_t tag;
 868     pa_bool_t volume_set = FALSE;
 869
 870     pa_assert(s);
 871     pa_assert(PA_REFCNT_VALUE(s) >= 1);
 872     pa_assert(direction == PA_STREAM_PLAYBACK || direction == PA_STREAM_RECORD);
 873
 874     PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_UNCONNECTED, PA_ERR_BADSTATE);
 875     PA_CHECK_VALIDITY(s->context, s->direct_on_input == PA_INVALID_INDEX || direction == PA_STREAM_RECORD, PA_ERR_BADSTATE);
 876     PA_CHECK_VALIDITY(s->context, !(flags & ~(PA_STREAM_START_CORKED|
 877                                               PA_STREAM_INTERPOLATE_TIMING|
 878                                               PA_STREAM_NOT_MONOTONOUS|
 879                                               PA_STREAM_AUTO_TIMING_UPDATE|
 880                                               PA_STREAM_NO_REMAP_CHANNELS|
 881                                               PA_STREAM_NO_REMIX_CHANNELS|
 882                                               PA_STREAM_FIX_FORMAT|
 883                                               PA_STREAM_FIX_RATE|
 884                                               PA_STREAM_FIX_CHANNELS|
 885                                               PA_STREAM_DONT_MOVE|
 886                                               PA_STREAM_VARIABLE_RATE|
 887                                               PA_STREAM_PEAK_DETECT|
 888                                               PA_STREAM_START_MUTED|
 889                                               PA_STREAM_ADJUST_LATENCY|
 890                                               PA_STREAM_EARLY_REQUESTS)), PA_ERR_INVALID);
 891
 892     PA_CHECK_VALIDITY(s->context, s->context->version >= 12 || !(flags & PA_STREAM_VARIABLE_RATE), PA_ERR_NOTSUPPORTED);
 893     PA_CHECK_VALIDITY(s->context, s->context->version >= 13 || !(flags & PA_STREAM_PEAK_DETECT), PA_ERR_NOTSUPPORTED);
 894     /* Althought some of the other flags are not supported on older
 895      * version, we don't check for them here, because it doesn't hurt
 896      * when they are passed but actually not supported. This makes
 897      * client development easier */
 898
 899     PA_CHECK_VALIDITY(s->context, direction == PA_STREAM_PLAYBACK || !(flags & (PA_STREAM_START_MUTED)), PA_ERR_INVALID);
 900     PA_CHECK_VALIDITY(s->context, direction == PA_STREAM_RECORD || !(flags & (PA_STREAM_PEAK_DETECT)), PA_ERR_INVALID);
 901     PA_CHECK_VALIDITY(s->context, !volume || volume->channels == s->sample_spec.channels, PA_ERR_INVALID);
 902     PA_CHECK_VALIDITY(s->context, !sync_stream || (direction == PA_STREAM_PLAYBACK && sync_stream->direction == PA_STREAM_PLAYBACK), PA_ERR_INVALID);
 903     PA_CHECK_VALIDITY(s->context, (flags & (PA_STREAM_ADJUST_LATENCY|PA_STREAM_EARLY_REQUESTS)) != (PA_STREAM_ADJUST_LATENCY|PA_STREAM_EARLY_REQUESTS), PA_ERR_INVALID);
 904
 905     pa_stream_ref(s);
 906
 907     s->direction = direction;
 908     s->flags = flags;
 909     s->corked = !!(flags & PA_STREAM_START_CORKED);
 910
 911     if (sync_stream)
 912         s->syncid = sync_stream->syncid;
 913
 914     if (attr)
 915         s->buffer_attr = *attr;
 916     automatic_buffer_attr(s, &s->buffer_attr, &s->sample_spec);
 917
 918     if (flags & PA_STREAM_INTERPOLATE_TIMING) {
 919         pa_usec_t x;
 920
 921         if (s->smoother)
 922             pa_smoother_free(s->smoother);
 923
 924         s->smoother = pa_smoother_new(SMOOTHER_ADJUST_TIME, SMOOTHER_HISTORY_TIME, !(flags & PA_STREAM_NOT_MONOTONIC), SMOOTHER_MIN_HISTORY);
 925
 926         x = pa_rtclock_usec();
 927         pa_smoother_set_time_offset(s->smoother, x);
 928         pa_smoother_pause(s->smoother, x);
 929     }
 930
 931     if (!dev)
 932         dev = s->direction == PA_STREAM_PLAYBACK ? s->context->conf->default_sink : s->context->conf->default_source;
 933
 934     t = pa_tagstruct_command(
 935             s->context,
 936             (uint32_t) (s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_CREATE_PLAYBACK_STREAM : PA_COMMAND_CREATE_RECORD_STREAM),
 937             &tag);
 938
 939     if (s->context->version < 13)
 940         pa_tagstruct_puts(t, pa_proplist_gets(s->proplist, PA_PROP_MEDIA_NAME));
 941
 942     pa_tagstruct_put(
 943             t,
 944             PA_TAG_SAMPLE_SPEC, &s->sample_spec,
 945             PA_TAG_CHANNEL_MAP, &s->channel_map,
 946             PA_TAG_U32, PA_INVALID_INDEX,
 947             PA_TAG_STRING, dev,
 948             PA_TAG_U32, s->buffer_attr.maxlength,
 949             PA_TAG_BOOLEAN, s->corked,
 950             PA_TAG_INVALID);
 951
 952     if (s->direction == PA_STREAM_PLAYBACK) {
 953         pa_cvolume cv;
 954
 955         pa_tagstruct_put(
 956                 t,
 957                 PA_TAG_U32, s->buffer_attr.tlength,
 958                 PA_TAG_U32, s->buffer_attr.prebuf,
 959                 PA_TAG_U32, s->buffer_attr.minreq,
 960                 PA_TAG_U32, s->syncid,
 961                 PA_TAG_INVALID);
 962
 963         volume_set = !!volume;
 964
 965         if (!volume)
 966             volume = pa_cvolume_reset(&cv, s->sample_spec.channels);
 967
 968         pa_tagstruct_put_cvolume(t, volume);
 969     } else
 970         pa_tagstruct_putu32(t, s->buffer_attr.fragsize);
 971
 972     if (s->context->version >= 12) {
 973         pa_tagstruct_put(
 974                 t,
 975                 PA_TAG_BOOLEAN, flags & PA_STREAM_NO_REMAP_CHANNELS,
 976                 PA_TAG_BOOLEAN, flags & PA_STREAM_NO_REMIX_CHANNELS,
 977                 PA_TAG_BOOLEAN, flags & PA_STREAM_FIX_FORMAT,
 978                 PA_TAG_BOOLEAN, flags & PA_STREAM_FIX_RATE,
 979                 PA_TAG_BOOLEAN, flags & PA_STREAM_FIX_CHANNELS,
 980                 PA_TAG_BOOLEAN, flags & PA_STREAM_DONT_MOVE,
 981                 PA_TAG_BOOLEAN, flags & PA_STREAM_VARIABLE_RATE,
 982                 PA_TAG_INVALID);
 983     }
 984
 985     if (s->context->version >= 13) {
 986
 987         if (s->direction == PA_STREAM_PLAYBACK)
 988             pa_tagstruct_put_boolean(t, flags & PA_STREAM_START_MUTED);
 989         else
 990             pa_tagstruct_put_boolean(t, flags & PA_STREAM_PEAK_DETECT);
 991
 992         pa_tagstruct_put(
 993                 t,
 994                 PA_TAG_BOOLEAN, flags & PA_STREAM_ADJUST_LATENCY,
 995                 PA_TAG_PROPLIST, s->proplist,
 996                 PA_TAG_INVALID);
 997
 998         if (s->direction == PA_STREAM_RECORD)
 999             pa_tagstruct_putu32(t, s->direct_on_input);
1000     }
1001
1002     if (s->context->version >= 14) {
1003
1004         if (s->direction == PA_STREAM_PLAYBACK)
1005             pa_tagstruct_put_boolean(t, volume_set);
1006
1007         pa_tagstruct_put_boolean(t, flags & PA_STREAM_EARLY_REQUESTS);
1008     }
1009
1010     pa_pstream_send_tagstruct(s->context->pstream, t);
1011     pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_create_stream_callback, s, NULL);
1012
1013     pa_stream_set_state(s, PA_STREAM_CREATING);
1014
1015     pa_stream_unref(s);
1016     return 0;
1017 }
1018
1019 int pa_stream_connect_playback(
1020         pa_stream *s,
1021         const char *dev,
1022         const pa_buffer_attr *attr,
1023         pa_stream_flags_t flags,
1024         pa_cvolume *volume,
1025         pa_stream *sync_stream) {
1026
1027     pa_assert(s);
1028     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1029
1030     return create_stream(PA_STREAM_PLAYBACK, s, dev, attr, flags, volume, sync_stream);
1031 }
1032
1033 int pa_stream_connect_record(
1034         pa_stream *s,
1035         const char *dev,
1036         const pa_buffer_attr *attr,
1037         pa_stream_flags_t flags) {
1038
1039     pa_assert(s);
1040     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1041
1042     return create_stream(PA_STREAM_RECORD, s, dev, attr, flags, NULL, NULL);
1043 }
1044
1045 int pa_stream_write(
1046         pa_stream *s,
1047         const void *data,
1048         size_t length,
1049         void (*free_cb)(void *p),
1050         int64_t offset,
1051         pa_seek_mode_t seek) {
1052
1053     pa_memchunk chunk;
1054     pa_seek_mode_t t_seek;
1055     int64_t t_offset;
1056     size_t t_length;
1057     const void *t_data;
1058
1059     pa_assert(s);
1060     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1061     pa_assert(data);
1062
1063     PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1064     PA_CHECK_VALIDITY(s->context, s->direction == PA_STREAM_PLAYBACK || s->direction == PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
1065     PA_CHECK_VALIDITY(s->context, seek <= PA_SEEK_RELATIVE_END, PA_ERR_INVALID);
1066     PA_CHECK_VALIDITY(s->context, s->direction == PA_STREAM_PLAYBACK || (seek == PA_SEEK_RELATIVE && offset == 0), PA_ERR_INVALID);
1067
1068     if (length <= 0)
1069         return 0;
1070
1071     t_seek = seek;
1072     t_offset = offset;
1073     t_length = length;
1074     t_data = data;
1075
1076     while (t_length > 0) {
1077
1078         chunk.index = 0;
1079
1080         if (free_cb && !pa_pstream_get_shm(s->context->pstream)) {
1081             chunk.memblock = pa_memblock_new_user(s->context->mempool, (void*) t_data, t_length, free_cb, 1);
1082             chunk.length = t_length;
1083         } else {
1084             void *d;
1085
1086             chunk.length = PA_MIN(t_length, pa_mempool_block_size_max(s->context->mempool));
1087             chunk.memblock = pa_memblock_new(s->context->mempool, chunk.length);
1088
1089             d = pa_memblock_acquire(chunk.memblock);
1090             memcpy(d, t_data, chunk.length);
1091             pa_memblock_release(chunk.memblock);
1092         }
1093
1094         pa_pstream_send_memblock(s->context->pstream, s->channel, t_offset, t_seek, &chunk);
1095
1096         t_offset = 0;
1097         t_seek = PA_SEEK_RELATIVE;
1098
1099         t_data = (const uint8_t*) t_data + chunk.length;
1100         t_length -= chunk.length;
1101
1102         pa_memblock_unref(chunk.memblock);
1103     }
1104
1105     if (free_cb && pa_pstream_get_shm(s->context->pstream))
1106         free_cb((void*) data);
1107
1108     if (length < s->requested_bytes)
1109         s->requested_bytes -= (uint32_t) length;
1110     else
1111         s->requested_bytes = 0;
1112
1113     /* FIXME!!! ^^^ will break when offset is != 0 and mode is not RELATIVE*/
1114
1115     if (s->direction == PA_STREAM_PLAYBACK) {
1116
1117         /* Update latency request correction */
1118         if (s->write_index_corrections[s->current_write_index_correction].valid) {
1119
1120             if (seek == PA_SEEK_ABSOLUTE) {
1121                 s->write_index_corrections[s->current_write_index_correction].corrupt = FALSE;
1122                 s->write_index_corrections[s->current_write_index_correction].absolute = TRUE;
1123                 s->write_index_corrections[s->current_write_index_correction].value = offset + (int64_t) length;
1124             } else if (seek == PA_SEEK_RELATIVE) {
1125                 if (!s->write_index_corrections[s->current_write_index_correction].corrupt)
1126                     s->write_index_corrections[s->current_write_index_correction].value += offset + (int64_t) length;
1127             } else
1128                 s->write_index_corrections[s->current_write_index_correction].corrupt = TRUE;
1129         }
1130
1131         /* Update the write index in the already available latency data */
1132         if (s->timing_info_valid) {
1133
1134             if (seek == PA_SEEK_ABSOLUTE) {
1135                 s->timing_info.write_index_corrupt = FALSE;
1136                 s->timing_info.write_index = offset + (int64_t) length;
1137             } else if (seek == PA_SEEK_RELATIVE) {
1138                 if (!s->timing_info.write_index_corrupt)
1139                     s->timing_info.write_index += offset + (int64_t) length;
1140             } else
1141                 s->timing_info.write_index_corrupt = TRUE;
1142         }
1143
1144         if (!s->timing_info_valid || s->timing_info.write_index_corrupt)
1145             request_auto_timing_update(s, TRUE);
1146     }
1147
1148     return 0;
1149 }
1150
1151 int pa_stream_peek(pa_stream *s, const void **data, size_t *length) {
1152     pa_assert(s);
1153     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1154     pa_assert(data);
1155     pa_assert(length);
1156
1157     PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1158     PA_CHECK_VALIDITY(s->context, s->direction == PA_STREAM_RECORD, PA_ERR_BADSTATE);
1159
1160     if (!s->peek_memchunk.memblock) {
1161
1162         if (pa_memblockq_peek(s->record_memblockq, &s->peek_memchunk) < 0) {
1163             *data = NULL;
1164             *length = 0;
1165             return 0;
1166         }
1167
1168         s->peek_data = pa_memblock_acquire(s->peek_memchunk.memblock);
1169     }
1170
1171     pa_assert(s->peek_data);
1172     *data = (uint8_t*) s->peek_data + s->peek_memchunk.index;
1173     *length = s->peek_memchunk.length;
1174     return 0;
1175 }
1176
1177 int pa_stream_drop(pa_stream *s) {
1178     pa_assert(s);
1179     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1180
1181     PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1182     PA_CHECK_VALIDITY(s->context, s->direction == PA_STREAM_RECORD, PA_ERR_BADSTATE);
1183     PA_CHECK_VALIDITY(s->context, s->peek_memchunk.memblock, PA_ERR_BADSTATE);
1184
1185     pa_memblockq_drop(s->record_memblockq, s->peek_memchunk.length);
1186
1187     /* Fix the simulated local read index */
1188     if (s->timing_info_valid && !s->timing_info.read_index_corrupt)
1189         s->timing_info.read_index += (int64_t) s->peek_memchunk.length;
1190
1191     pa_assert(s->peek_data);
1192     pa_memblock_release(s->peek_memchunk.memblock);
1193     pa_memblock_unref(s->peek_memchunk.memblock);
1194     pa_memchunk_reset(&s->peek_memchunk);
1195
1196     return 0;
1197 }
1198
1199 size_t pa_stream_writable_size(pa_stream *s) {
1200     pa_assert(s);
1201     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1202
1203     PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, (size_t) -1);
1204     PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->direction != PA_STREAM_RECORD, PA_ERR_BADSTATE, (size_t) -1);
1205
1206     return s->requested_bytes;
1207 }
1208
1209 size_t pa_stream_readable_size(pa_stream *s) {
1210     pa_assert(s);
1211     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1212
1213     PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, (size_t) -1);
1214     PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->direction == PA_STREAM_RECORD, PA_ERR_BADSTATE, (size_t) -1);
1215
1216     return pa_memblockq_get_length(s->record_memblockq);
1217 }
1218
1219 pa_operation * pa_stream_drain(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) {
1220     pa_operation *o;
1221     pa_tagstruct *t;
1222     uint32_t tag;
1223
1224     pa_assert(s);
1225     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1226
1227     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1228     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE);
1229
1230     o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
1231
1232     t = pa_tagstruct_command(s->context, PA_COMMAND_DRAIN_PLAYBACK_STREAM, &tag);
1233     pa_tagstruct_putu32(t, s->channel);
1234     pa_pstream_send_tagstruct(s->context->pstream, t);
1235     pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
1236
1237     return o;
1238 }
1239
1240 static pa_usec_t calc_time(pa_stream *s, pa_bool_t ignore_transport) {
1241     pa_usec_t usec;
1242
1243     pa_assert(s);
1244     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1245     pa_assert(s->state == PA_STREAM_READY);
1246     pa_assert(s->direction != PA_STREAM_UPLOAD);
1247     pa_assert(s->timing_info_valid);
1248     pa_assert(s->direction != PA_STREAM_PLAYBACK || !s->timing_info.read_index_corrupt);
1249     pa_assert(s->direction != PA_STREAM_RECORD || !s->timing_info.write_index_corrupt);
1250
1251     if (s->direction == PA_STREAM_PLAYBACK) {
1252         /* The last byte that was written into the output device
1253          * had this time value associated */
1254         usec = pa_bytes_to_usec(s->timing_info.read_index < 0 ? 0 : (uint64_t) s->timing_info.read_index, &s->sample_spec);
1255
1256         if (!s->corked && !s->suspended) {
1257
1258             if (!ignore_transport)
1259                 /* Because the latency info took a little time to come
1260                  * to us, we assume that the real output time is actually
1261                  * a little ahead */
1262                 usec += s->timing_info.transport_usec;
1263
1264             /* However, the output device usually maintains a buffer
1265                too, hence the real sample currently played is a little
1266                back  */
1267             if (s->timing_info.sink_usec >= usec)
1268                 usec = 0;
1269             else
1270                 usec -= s->timing_info.sink_usec;
1271         }
1272
1273     } else {
1274         pa_assert(s->direction == PA_STREAM_RECORD);
1275
1276         /* The last byte written into the server side queue had
1277          * this time value associated */
1278         usec = pa_bytes_to_usec(s->timing_info.write_index < 0 ? 0 : (uint64_t) s->timing_info.write_index, &s->sample_spec);
1279
1280         if (!s->corked && !s->suspended) {
1281
1282             if (!ignore_transport)
1283                 /* Add transport latency */
1284                 usec += s->timing_info.transport_usec;
1285
1286             /* Add latency of data in device buffer */
1287             usec += s->timing_info.source_usec;
1288
1289             /* If this is a monitor source, we need to correct the
1290              * time by the playback device buffer */
1291             if (s->timing_info.sink_usec >= usec)
1292                 usec = 0;
1293             else
1294                 usec -= s->timing_info.sink_usec;
1295         }
1296     }
1297
1298     return usec;
1299 }
1300
1301 static void stream_get_timing_info_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1302     pa_operation *o = userdata;
1303     struct timeval local, remote, now;
1304     pa_timing_info *i;
1305     pa_bool_t playing = FALSE;
1306     uint64_t underrun_for = 0, playing_for = 0;
1307
1308     pa_assert(pd);
1309     pa_assert(o);
1310     pa_assert(PA_REFCNT_VALUE(o) >= 1);
1311
1312     if (!o->context || !o->stream)
1313         goto finish;
1314
1315     i = &o->stream->timing_info;
1316
1317     o->stream->timing_info_valid = FALSE;
1318     i->write_index_corrupt = TRUE;
1319     i->read_index_corrupt = TRUE;
1320
1321     if (command != PA_COMMAND_REPLY) {
1322         if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
1323             goto finish;
1324
1325     } else {
1326
1327         if (pa_tagstruct_get_usec(t, &i->sink_usec) < 0 ||
1328             pa_tagstruct_get_usec(t, &i->source_usec) < 0 ||
1329             pa_tagstruct_get_boolean(t, &playing) < 0 ||
1330             pa_tagstruct_get_timeval(t, &local) < 0 ||
1331             pa_tagstruct_get_timeval(t, &remote) < 0 ||
1332             pa_tagstruct_gets64(t, &i->write_index) < 0 ||
1333             pa_tagstruct_gets64(t, &i->read_index) < 0) {
1334
1335             pa_context_fail(o->context, PA_ERR_PROTOCOL);
1336             goto finish;
1337         }
1338
1339         if (o->context->version >= 13 &&
1340             o->stream->direction == PA_STREAM_PLAYBACK)
1341             if (pa_tagstruct_getu64(t, &underrun_for) < 0 ||
1342                 pa_tagstruct_getu64(t, &playing_for) < 0) {
1343
1344                 pa_context_fail(o->context, PA_ERR_PROTOCOL);
1345                 goto finish;
1346             }
1347
1348
1349         if (!pa_tagstruct_eof(t)) {
1350             pa_context_fail(o->context, PA_ERR_PROTOCOL);
1351             goto finish;
1352         }
1353         o->stream->timing_info_valid = TRUE;
1354         i->write_index_corrupt = FALSE;
1355         i->read_index_corrupt = FALSE;
1356
1357         i->playing = (int) playing;
1358         i->since_underrun = (int64_t) (playing ? playing_for : underrun_for);
1359
1360         pa_gettimeofday(&now);
1361
1362         /* Calculcate timestamps */
1363         if (pa_timeval_cmp(&local, &remote) <= 0 && pa_timeval_cmp(&remote, &now) <= 0) {
1364             /* local and remote seem to have synchronized clocks */
1365
1366             if (o->stream->direction == PA_STREAM_PLAYBACK)
1367                 i->transport_usec = pa_timeval_diff(&remote, &local);
1368             else
1369                 i->transport_usec = pa_timeval_diff(&now, &remote);
1370
1371             i->synchronized_clocks = TRUE;
1372             i->timestamp = remote;
1373         } else {
1374             /* clocks are not synchronized, let's estimate latency then */
1375             i->transport_usec = pa_timeval_diff(&now, &local)/2;
1376             i->synchronized_clocks = FALSE;
1377             i->timestamp = local;
1378             pa_timeval_add(&i->timestamp, i->transport_usec);
1379         }
1380
1381         /* Invalidate read and write indexes if necessary */
1382         if (tag < o->stream->read_index_not_before)
1383             i->read_index_corrupt = TRUE;
1384
1385         if (tag < o->stream->write_index_not_before)
1386             i->write_index_corrupt = TRUE;
1387
1388         if (o->stream->direction == PA_STREAM_PLAYBACK) {
1389             /* Write index correction */
1390
1391             int n, j;
1392             uint32_t ctag = tag;
1393
1394             /* Go through the saved correction values and add up the
1395              * total correction.*/
1396             for (n = 0, j = o->stream->current_write_index_correction+1;
1397                  n < PA_MAX_WRITE_INDEX_CORRECTIONS;
1398                  n++, j = (j + 1) % PA_MAX_WRITE_INDEX_CORRECTIONS) {
1399
1400                 /* Step over invalid data or out-of-date data */
1401                 if (!o->stream->write_index_corrections[j].valid ||
1402                     o->stream->write_index_corrections[j].tag < ctag)
1403                     continue;
1404
1405                 /* Make sure that everything is in order */
1406                 ctag = o->stream->write_index_corrections[j].tag+1;
1407
1408                 /* Now fix the write index */
1409                 if (o->stream->write_index_corrections[j].corrupt) {
1410                     /* A corrupting seek was made */
1411                     i->write_index_corrupt = TRUE;
1412                 } else if (o->stream->write_index_corrections[j].absolute) {
1413                     /* An absolute seek was made */
1414                     i->write_index = o->stream->write_index_corrections[j].value;
1415                     i->write_index_corrupt = FALSE;
1416                 } else if (!i->write_index_corrupt) {
1417                     /* A relative seek was made */
1418                     i->write_index += o->stream->write_index_corrections[j].value;
1419                 }
1420             }
1421
1422             /* Clear old correction entries */
1423             for (n = 0; n < PA_MAX_WRITE_INDEX_CORRECTIONS; n++) {
1424                 if (!o->stream->write_index_corrections[n].valid)
1425                     continue;
1426
1427                 if (o->stream->write_index_corrections[n].tag <= tag)
1428                     o->stream->write_index_corrections[n].valid = FALSE;
1429             }
1430         }
1431
1432         if (o->stream->direction == PA_STREAM_RECORD) {
1433             /* Read index correction */
1434
1435             if (!i->read_index_corrupt)
1436                 i->read_index -= (int64_t) pa_memblockq_get_length(o->stream->record_memblockq);
1437         }
1438
1439         /* Update smoother */
1440         if (o->stream->smoother) {
1441             pa_usec_t u, x;
1442
1443             u = x = pa_rtclock_usec() - i->transport_usec;
1444
1445             if (o->stream->direction == PA_STREAM_PLAYBACK && o->context->version >= 13) {
1446                 pa_usec_t su;
1447
1448                 /* If we weren't playing then it will take some time
1449                  * until the audio will actually come out through the
1450                  * speakers. Since we follow that timing here, we need
1451                  * to try to fix this up */
1452
1453                 su = pa_bytes_to_usec((uint64_t) i->since_underrun, &o->stream->sample_spec);
1454
1455                 if (su < i->sink_usec)
1456                     x += i->sink_usec - su;
1457             }
1458
1459             if (!i->playing)
1460                 pa_smoother_pause(o->stream->smoother, x);
1461
1462             /* Update the smoother */
1463             if ((o->stream->direction == PA_STREAM_PLAYBACK && !i->read_index_corrupt) ||
1464                 (o->stream->direction == PA_STREAM_RECORD && !i->write_index_corrupt))
1465                 pa_smoother_put(o->stream->smoother, u, calc_time(o->stream, TRUE));
1466
1467             if (i->playing)
1468                 pa_smoother_resume(o->stream->smoother, x);
1469         }
1470     }
1471
1472     o->stream->auto_timing_update_requested = FALSE;
1473
1474     if (o->stream->latency_update_callback)
1475         o->stream->latency_update_callback(o->stream, o->stream->latency_update_userdata);
1476
1477     if (o->callback && o->stream && o->stream->state == PA_STREAM_READY) {
1478         pa_stream_success_cb_t cb = (pa_stream_success_cb_t) o->callback;
1479         cb(o->stream, o->stream->timing_info_valid, o->userdata);
1480     }
1481
1482 finish:
1483
1484     pa_operation_done(o);
1485     pa_operation_unref(o);
1486 }
1487
1488 pa_operation* pa_stream_update_timing_info(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) {
1489     uint32_t tag;
1490     pa_operation *o;
1491     pa_tagstruct *t;
1492     struct timeval now;
1493     int cidx = 0;
1494
1495     pa_assert(s);
1496     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1497
1498     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1499     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
1500
1501     if (s->direction == PA_STREAM_PLAYBACK) {
1502         /* Find a place to store the write_index correction data for this entry */
1503         cidx = (s->current_write_index_correction + 1) % PA_MAX_WRITE_INDEX_CORRECTIONS;
1504
1505         /* Check if we could allocate a correction slot. If not, there are too many outstanding queries */
1506         PA_CHECK_VALIDITY_RETURN_NULL(s->context, !s->write_index_corrections[cidx].valid, PA_ERR_INTERNAL);
1507     }
1508     o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
1509
1510     t = pa_tagstruct_command(
1511             s->context,
1512             (uint32_t) (s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_GET_PLAYBACK_LATENCY : PA_COMMAND_GET_RECORD_LATENCY),
1513             &tag);
1514     pa_tagstruct_putu32(t, s->channel);
1515     pa_tagstruct_put_timeval(t, pa_gettimeofday(&now));
1516
1517     pa_pstream_send_tagstruct(s->context->pstream, t);
1518     pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, stream_get_timing_info_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
1519
1520     if (s->direction == PA_STREAM_PLAYBACK) {
1521         /* Fill in initial correction data */
1522
1523         s->current_write_index_correction = cidx;
1524
1525         s->write_index_corrections[cidx].valid = TRUE;
1526         s->write_index_corrections[cidx].absolute = FALSE;
1527         s->write_index_corrections[cidx].corrupt = FALSE;
1528         s->write_index_corrections[cidx].tag = tag;
1529         s->write_index_corrections[cidx].value = 0;
1530     }
1531
1532     return o;
1533 }
1534
1535 void pa_stream_disconnect_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1536     pa_stream *s = userdata;
1537
1538     pa_assert(pd);
1539     pa_assert(s);
1540     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1541
1542     pa_stream_ref(s);
1543
1544     if (command != PA_COMMAND_REPLY) {
1545         if (pa_context_handle_error(s->context, command, t, FALSE) < 0)
1546             goto finish;
1547
1548         pa_stream_set_state(s, PA_STREAM_FAILED);
1549         goto finish;
1550     } else if (!pa_tagstruct_eof(t)) {
1551         pa_context_fail(s->context, PA_ERR_PROTOCOL);
1552         goto finish;
1553     }
1554
1555     pa_stream_set_state(s, PA_STREAM_TERMINATED);
1556
1557 finish:
1558     pa_stream_unref(s);
1559 }
1560
1561 int pa_stream_disconnect(pa_stream *s) {
1562     pa_tagstruct *t;
1563     uint32_t tag;
1564
1565     pa_assert(s);
1566     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1567
1568     PA_CHECK_VALIDITY(s->context, s->channel_valid, PA_ERR_BADSTATE);
1569     PA_CHECK_VALIDITY(s->context, s->context->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
1570
1571     pa_stream_ref(s);
1572
1573     t = pa_tagstruct_command(
1574             s->context,
1575             (uint32_t) (s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_DELETE_PLAYBACK_STREAM :
1576                         (s->direction == PA_STREAM_RECORD ? PA_COMMAND_DELETE_RECORD_STREAM : PA_COMMAND_DELETE_UPLOAD_STREAM)),
1577             &tag);
1578     pa_tagstruct_putu32(t, s->channel);
1579     pa_pstream_send_tagstruct(s->context->pstream, t);
1580     pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_disconnect_callback, s, NULL);
1581
1582     pa_stream_unref(s);
1583     return 0;
1584 }
1585
1586 void pa_stream_set_read_callback(pa_stream *s, pa_stream_request_cb_t cb, void *userdata) {
1587     pa_assert(s);
1588     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1589
1590     if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED)
1591         return;
1592
1593     s->read_callback = cb;
1594     s->read_userdata = userdata;
1595 }
1596
1597 void pa_stream_set_write_callback(pa_stream *s, pa_stream_request_cb_t cb, void *userdata) {
1598     pa_assert(s);
1599     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1600
1601     if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED)
1602         return;
1603
1604     s->write_callback = cb;
1605     s->write_userdata = userdata;
1606 }
1607
1608 void pa_stream_set_state_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
1609     pa_assert(s);
1610     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1611
1612     if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED)
1613         return;
1614
1615     s->state_callback = cb;
1616     s->state_userdata = userdata;
1617 }
1618
1619 void pa_stream_set_overflow_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
1620     pa_assert(s);
1621     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1622
1623     if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED)
1624         return;
1625
1626     s->overflow_callback = cb;
1627     s->overflow_userdata = userdata;
1628 }
1629
1630 void pa_stream_set_underflow_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
1631     pa_assert(s);
1632     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1633
1634     if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED)
1635         return;
1636
1637     s->underflow_callback = cb;
1638     s->underflow_userdata = userdata;
1639 }
1640
1641 void pa_stream_set_latency_update_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
1642     pa_assert(s);
1643     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1644
1645     if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED)
1646         return;
1647
1648     s->latency_update_callback = cb;
1649     s->latency_update_userdata = userdata;
1650 }
1651
1652 void pa_stream_set_moved_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
1653     pa_assert(s);
1654     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1655
1656     if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED)
1657         return;
1658
1659     s->moved_callback = cb;
1660     s->moved_userdata = userdata;
1661 }
1662
1663 void pa_stream_set_suspended_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
1664     pa_assert(s);
1665     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1666
1667     if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED)
1668         return;
1669
1670     s->suspended_callback = cb;
1671     s->suspended_userdata = userdata;
1672 }
1673
1674 void pa_stream_set_started_callback(pa_stream *s, pa_stream_notify_cb_t cb, void *userdata) {
1675     pa_assert(s);
1676     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1677
1678     if (s->state == PA_STREAM_TERMINATED || s->state == PA_STREAM_FAILED)
1679         return;
1680
1681     s->started_callback = cb;
1682     s->started_userdata = userdata;
1683 }
1684
1685 void pa_stream_simple_ack_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1686     pa_operation *o = userdata;
1687     int success = 1;
1688
1689     pa_assert(pd);
1690     pa_assert(o);
1691     pa_assert(PA_REFCNT_VALUE(o) >= 1);
1692
1693     if (!o->context)
1694         goto finish;
1695
1696     if (command != PA_COMMAND_REPLY) {
1697         if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
1698             goto finish;
1699
1700         success = 0;
1701     } else if (!pa_tagstruct_eof(t)) {
1702         pa_context_fail(o->context, PA_ERR_PROTOCOL);
1703         goto finish;
1704     }
1705
1706     if (o->callback) {
1707         pa_stream_success_cb_t cb = (pa_stream_success_cb_t) o->callback;
1708         cb(o->stream, success, o->userdata);
1709     }
1710
1711 finish:
1712     pa_operation_done(o);
1713     pa_operation_unref(o);
1714 }
1715
1716 pa_operation* pa_stream_cork(pa_stream *s, int b, pa_stream_success_cb_t cb, void *userdata) {
1717     pa_operation *o;
1718     pa_tagstruct *t;
1719     uint32_t tag;
1720
1721     pa_assert(s);
1722     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1723
1724     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1725     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
1726
1727     s->corked = b;
1728
1729     o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
1730
1731     t = pa_tagstruct_command(
1732             s->context,
1733             (uint32_t) (s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_CORK_PLAYBACK_STREAM : PA_COMMAND_CORK_RECORD_STREAM),
1734             &tag);
1735     pa_tagstruct_putu32(t, s->channel);
1736     pa_tagstruct_put_boolean(t, !!b);
1737     pa_pstream_send_tagstruct(s->context->pstream, t);
1738     pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
1739
1740     check_smoother_status(s, FALSE, FALSE, FALSE);
1741
1742     /* This might cause the indexes to hang/start again, hence
1743      * let's request a timing update */
1744     request_auto_timing_update(s, TRUE);
1745
1746     return o;
1747 }
1748
1749 static pa_operation* stream_send_simple_command(pa_stream *s, uint32_t command, pa_stream_success_cb_t cb, void *userdata) {
1750     pa_tagstruct *t;
1751     pa_operation *o;
1752     uint32_t tag;
1753
1754     pa_assert(s);
1755     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1756
1757     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1758
1759     o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
1760
1761     t = pa_tagstruct_command(s->context, command, &tag);
1762     pa_tagstruct_putu32(t, s->channel);
1763     pa_pstream_send_tagstruct(s->context->pstream, t);
1764     pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
1765
1766     return o;
1767 }
1768
1769 pa_operation* pa_stream_flush(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) {
1770     pa_operation *o;
1771
1772     pa_assert(s);
1773     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1774
1775     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1776     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
1777
1778     if (!(o = stream_send_simple_command(s, (uint32_t) (s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_FLUSH_PLAYBACK_STREAM : PA_COMMAND_FLUSH_RECORD_STREAM), cb, userdata)))
1779         return NULL;
1780
1781     if (s->direction == PA_STREAM_PLAYBACK) {
1782
1783         if (s->write_index_corrections[s->current_write_index_correction].valid)
1784             s->write_index_corrections[s->current_write_index_correction].corrupt = TRUE;
1785
1786         if (s->buffer_attr.prebuf > 0)
1787             check_smoother_status(s, FALSE, FALSE, TRUE);
1788
1789         /* This will change the write index, but leave the
1790          * read index untouched. */
1791         invalidate_indexes(s, FALSE, TRUE);
1792
1793     } else
1794         /* For record streams this has no influence on the write
1795          * index, but the read index might jump. */
1796         invalidate_indexes(s, TRUE, FALSE);
1797
1798     return o;
1799 }
1800
1801 pa_operation* pa_stream_prebuf(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) {
1802     pa_operation *o;
1803
1804     pa_assert(s);
1805     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1806
1807     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1808     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE);
1809     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->buffer_attr.prebuf > 0, PA_ERR_BADSTATE);
1810
1811     if (!(o = stream_send_simple_command(s, PA_COMMAND_PREBUF_PLAYBACK_STREAM, cb, userdata)))
1812         return NULL;
1813
1814     /* This might cause the read index to hang again, hence
1815      * let's request a timing update */
1816     request_auto_timing_update(s, TRUE);
1817
1818     return o;
1819 }
1820
1821 pa_operation* pa_stream_trigger(pa_stream *s, pa_stream_success_cb_t cb, void *userdata) {
1822     pa_operation *o;
1823
1824     pa_assert(s);
1825     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1826
1827     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1828     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE);
1829     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->buffer_attr.prebuf > 0, PA_ERR_BADSTATE);
1830
1831     if (!(o = stream_send_simple_command(s, PA_COMMAND_TRIGGER_PLAYBACK_STREAM, cb, userdata)))
1832         return NULL;
1833
1834     /* This might cause the read index to start moving again, hence
1835      * let's request a timing update */
1836     request_auto_timing_update(s, TRUE);
1837
1838     return o;
1839 }
1840
1841 pa_operation* pa_stream_set_name(pa_stream *s, const char *name, pa_stream_success_cb_t cb, void *userdata) {
1842     pa_operation *o;
1843
1844     pa_assert(s);
1845     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1846     pa_assert(name);
1847
1848     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1849     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
1850
1851     if (s->context->version >= 13) {
1852         pa_proplist *p = pa_proplist_new();
1853
1854         pa_proplist_sets(p, PA_PROP_MEDIA_NAME, name);
1855         o = pa_stream_proplist_update(s, PA_UPDATE_REPLACE, p, cb, userdata);
1856         pa_proplist_free(p);
1857     } else {
1858         pa_tagstruct *t;
1859         uint32_t tag;
1860
1861         o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
1862         t = pa_tagstruct_command(
1863                 s->context,
1864                 (uint32_t) (s->direction == PA_STREAM_RECORD ? PA_COMMAND_SET_RECORD_STREAM_NAME : PA_COMMAND_SET_PLAYBACK_STREAM_NAME),
1865                 &tag);
1866         pa_tagstruct_putu32(t, s->channel);
1867         pa_tagstruct_puts(t, name);
1868         pa_pstream_send_tagstruct(s->context->pstream, t);
1869         pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
1870     }
1871
1872     return o;
1873 }
1874
1875 int pa_stream_get_time(pa_stream *s, pa_usec_t *r_usec) {
1876     pa_usec_t usec;
1877
1878     pa_assert(s);
1879     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1880
1881     PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1882     PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
1883     PA_CHECK_VALIDITY(s->context, s->timing_info_valid, PA_ERR_NODATA);
1884     PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_PLAYBACK || !s->timing_info.read_index_corrupt, PA_ERR_NODATA);
1885     PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_RECORD || !s->timing_info.write_index_corrupt, PA_ERR_NODATA);
1886
1887     if (s->smoother)
1888         usec = pa_smoother_get(s->smoother, pa_rtclock_usec());
1889     else
1890         usec = calc_time(s, FALSE);
1891
1892     /* Make sure the time runs monotonically */
1893     if (!(s->flags & PA_STREAM_NOT_MONOTONOUS)) {
1894         if (usec < s->previous_time)
1895             usec = s->previous_time;
1896         else
1897             s->previous_time = usec;
1898     }
1899
1900     if (r_usec)
1901         *r_usec = usec;
1902
1903     return 0;
1904 }
1905
1906 static pa_usec_t time_counter_diff(pa_stream *s, pa_usec_t a, pa_usec_t b, int *negative) {
1907     pa_assert(s);
1908     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1909
1910     if (negative)
1911         *negative = 0;
1912
1913     if (a >= b)
1914         return a-b;
1915     else {
1916         if (negative && s->direction == PA_STREAM_RECORD) {
1917             *negative = 1;
1918             return b-a;
1919         } else
1920             return 0;
1921     }
1922 }
1923
1924 int pa_stream_get_latency(pa_stream *s, pa_usec_t *r_usec, int *negative) {
1925     pa_usec_t t, c;
1926     int r;
1927     int64_t cindex;
1928
1929     pa_assert(s);
1930     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1931     pa_assert(r_usec);
1932
1933     PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1934     PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
1935     PA_CHECK_VALIDITY(s->context, s->timing_info_valid, PA_ERR_NODATA);
1936     PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_PLAYBACK || !s->timing_info.write_index_corrupt, PA_ERR_NODATA);
1937     PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_RECORD || !s->timing_info.read_index_corrupt, PA_ERR_NODATA);
1938
1939     if ((r = pa_stream_get_time(s, &t)) < 0)
1940         return r;
1941
1942     if (s->direction == PA_STREAM_PLAYBACK)
1943         cindex = s->timing_info.write_index;
1944     else
1945         cindex = s->timing_info.read_index;
1946
1947     if (cindex < 0)
1948         cindex = 0;
1949
1950     c = pa_bytes_to_usec((uint64_t) cindex, &s->sample_spec);
1951
1952     if (s->direction == PA_STREAM_PLAYBACK)
1953         *r_usec = time_counter_diff(s, c, t, negative);
1954     else
1955         *r_usec = time_counter_diff(s, t, c, negative);
1956
1957     return 0;
1958 }
1959
1960 const pa_timing_info* pa_stream_get_timing_info(pa_stream *s) {
1961     pa_assert(s);
1962     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1963
1964     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1965     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
1966     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->timing_info_valid, PA_ERR_NODATA);
1967
1968     return &s->timing_info;
1969 }
1970
1971 const pa_sample_spec* pa_stream_get_sample_spec(pa_stream *s) {
1972     pa_assert(s);
1973     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1974
1975     return &s->sample_spec;
1976 }
1977
1978 const pa_channel_map* pa_stream_get_channel_map(pa_stream *s) {
1979     pa_assert(s);
1980     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1981
1982     return &s->channel_map;
1983 }
1984
1985 const pa_buffer_attr* pa_stream_get_buffer_attr(pa_stream *s) {
1986     pa_assert(s);
1987     pa_assert(PA_REFCNT_VALUE(s) >= 1);
1988
1989     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
1990     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
1991     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->context->version >= 9, PA_ERR_NOTSUPPORTED);
1992
1993     return &s->buffer_attr;
1994 }
1995
1996 static void stream_set_buffer_attr_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
1997     pa_operation *o = userdata;
1998     int success = 1;
1999
2000     pa_assert(pd);
2001     pa_assert(o);
2002     pa_assert(PA_REFCNT_VALUE(o) >= 1);
2003
2004     if (!o->context)
2005         goto finish;
2006
2007     if (command != PA_COMMAND_REPLY) {
2008         if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
2009             goto finish;
2010
2011         success = 0;
2012     } else {
2013         if (o->stream->direction == PA_STREAM_PLAYBACK) {
2014             if (pa_tagstruct_getu32(t, &o->stream->buffer_attr.maxlength) < 0 ||
2015                 pa_tagstruct_getu32(t, &o->stream->buffer_attr.tlength) < 0 ||
2016                 pa_tagstruct_getu32(t, &o->stream->buffer_attr.prebuf) < 0 ||
2017                 pa_tagstruct_getu32(t, &o->stream->buffer_attr.minreq) < 0) {
2018                 pa_context_fail(o->context, PA_ERR_PROTOCOL);
2019                 goto finish;
2020             }
2021         } else if (o->stream->direction == PA_STREAM_RECORD) {
2022             if (pa_tagstruct_getu32(t, &o->stream->buffer_attr.maxlength) < 0 ||
2023                 pa_tagstruct_getu32(t, &o->stream->buffer_attr.fragsize) < 0) {
2024                 pa_context_fail(o->context, PA_ERR_PROTOCOL);
2025                 goto finish;
2026             }
2027         }
2028
2029         if (o->stream->context->version >= 13) {
2030             pa_usec_t usec;
2031
2032             if (pa_tagstruct_get_usec(t, &usec) < 0) {
2033                 pa_context_fail(o->context, PA_ERR_PROTOCOL);
2034                 goto finish;
2035             }
2036
2037             if (o->stream->direction == PA_STREAM_RECORD)
2038                 o->stream->timing_info.configured_source_usec = usec;
2039             else
2040                 o->stream->timing_info.configured_sink_usec = usec;
2041         }
2042
2043         if (!pa_tagstruct_eof(t)) {
2044             pa_context_fail(o->context, PA_ERR_PROTOCOL);
2045             goto finish;
2046         }
2047     }
2048
2049     if (o->callback) {
2050         pa_stream_success_cb_t cb = (pa_stream_success_cb_t) o->callback;
2051         cb(o->stream, success, o->userdata);
2052     }
2053
2054 finish:
2055     pa_operation_done(o);
2056     pa_operation_unref(o);
2057 }
2058
2059
2060 pa_operation* pa_stream_set_buffer_attr(pa_stream *s, const pa_buffer_attr *attr, pa_stream_success_cb_t cb, void *userdata) {
2061     pa_operation *o;
2062     pa_tagstruct *t;
2063     uint32_t tag;
2064
2065     pa_assert(s);
2066     pa_assert(PA_REFCNT_VALUE(s) >= 1);
2067     pa_assert(attr);
2068
2069     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
2070     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
2071     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->context->version >= 12, PA_ERR_NOTSUPPORTED);
2072
2073     o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
2074
2075     t = pa_tagstruct_command(
2076             s->context,
2077             (uint32_t) (s->direction == PA_STREAM_RECORD ? PA_COMMAND_SET_RECORD_STREAM_BUFFER_ATTR : PA_COMMAND_SET_PLAYBACK_STREAM_BUFFER_ATTR),
2078             &tag);
2079     pa_tagstruct_putu32(t, s->channel);
2080
2081     pa_tagstruct_putu32(t, attr->maxlength);
2082
2083     if (s->direction == PA_STREAM_PLAYBACK)
2084         pa_tagstruct_put(
2085                 t,
2086                 PA_TAG_U32, attr->tlength,
2087                 PA_TAG_U32, attr->prebuf,
2088                 PA_TAG_U32, attr->minreq,
2089                 PA_TAG_INVALID);
2090     else
2091         pa_tagstruct_putu32(t, attr->fragsize);
2092
2093     if (s->context->version >= 13)
2094         pa_tagstruct_put_boolean(t, !!(s->flags & PA_STREAM_ADJUST_LATENCY));
2095
2096     if (s->context->version >= 14)
2097         pa_tagstruct_put_boolean(t, !!(s->flags & PA_STREAM_EARLY_REQUESTS));
2098
2099     pa_pstream_send_tagstruct(s->context->pstream, t);
2100     pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, stream_set_buffer_attr_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
2101
2102     /* This might cause changes in the read/write indexex, hence let's
2103      * request a timing update */
2104     request_auto_timing_update(s, TRUE);
2105
2106     return o;
2107 }
2108
2109 uint32_t pa_stream_get_device_index(pa_stream *s) {
2110     pa_assert(s);
2111     pa_assert(PA_REFCNT_VALUE(s) >= 1);
2112
2113     PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE, PA_INVALID_INDEX);
2114     PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE, PA_INVALID_INDEX);
2115     PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->context->version >= 12, PA_ERR_NOTSUPPORTED, PA_INVALID_INDEX);
2116     PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->device_index != PA_INVALID_INDEX, PA_ERR_BADSTATE, PA_INVALID_INDEX);
2117
2118     return s->device_index;
2119 }
2120
2121 const char *pa_stream_get_device_name(pa_stream *s) {
2122     pa_assert(s);
2123     pa_assert(PA_REFCNT_VALUE(s) >= 1);
2124
2125     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
2126     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
2127     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->context->version >= 12, PA_ERR_NOTSUPPORTED);
2128     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->device_name, PA_ERR_BADSTATE);
2129
2130     return s->device_name;
2131 }
2132
2133 int pa_stream_is_suspended(pa_stream *s) {
2134     pa_assert(s);
2135     pa_assert(PA_REFCNT_VALUE(s) >= 1);
2136
2137     PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
2138     PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
2139     PA_CHECK_VALIDITY(s->context, s->context->version >= 12, PA_ERR_NOTSUPPORTED);
2140
2141     return s->suspended;
2142 }
2143
2144 int pa_stream_is_corked(pa_stream *s) {
2145     pa_assert(s);
2146     pa_assert(PA_REFCNT_VALUE(s) >= 1);
2147
2148     PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
2149     PA_CHECK_VALIDITY(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
2150
2151     return s->corked;
2152 }
2153
2154 static void stream_update_sample_rate_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
2155     pa_operation *o = userdata;
2156     int success = 1;
2157
2158     pa_assert(pd);
2159     pa_assert(o);
2160     pa_assert(PA_REFCNT_VALUE(o) >= 1);
2161
2162     if (!o->context)
2163         goto finish;
2164
2165     if (command != PA_COMMAND_REPLY) {
2166         if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
2167             goto finish;
2168
2169         success = 0;
2170     } else {
2171
2172         if (!pa_tagstruct_eof(t)) {
2173             pa_context_fail(o->context, PA_ERR_PROTOCOL);
2174             goto finish;
2175         }
2176     }
2177
2178     o->stream->sample_spec.rate = PA_PTR_TO_UINT(o->private);
2179     pa_assert(pa_sample_spec_valid(&o->stream->sample_spec));
2180
2181     if (o->callback) {
2182         pa_stream_success_cb_t cb = (pa_stream_success_cb_t) o->callback;
2183         cb(o->stream, success, o->userdata);
2184     }
2185
2186 finish:
2187     pa_operation_done(o);
2188     pa_operation_unref(o);
2189 }
2190
2191
2192 pa_operation *pa_stream_update_sample_rate(pa_stream *s, uint32_t rate, pa_stream_success_cb_t cb, void *userdata) {
2193     pa_operation *o;
2194     pa_tagstruct *t;
2195     uint32_t tag;
2196
2197     pa_assert(s);
2198     pa_assert(PA_REFCNT_VALUE(s) >= 1);
2199
2200     PA_CHECK_VALIDITY_RETURN_NULL(s->context, rate > 0 && rate <= PA_RATE_MAX, PA_ERR_INVALID);
2201     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
2202     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
2203     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->flags & PA_STREAM_VARIABLE_RATE, PA_ERR_BADSTATE);
2204     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->context->version >= 12, PA_ERR_NOTSUPPORTED);
2205
2206     o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
2207     o->private = PA_UINT_TO_PTR(rate);
2208
2209     t = pa_tagstruct_command(
2210             s->context,
2211             (uint32_t) (s->direction == PA_STREAM_RECORD ? PA_COMMAND_UPDATE_RECORD_STREAM_SAMPLE_RATE : PA_COMMAND_UPDATE_PLAYBACK_STREAM_SAMPLE_RATE),
2212             &tag);
2213     pa_tagstruct_putu32(t, s->channel);
2214     pa_tagstruct_putu32(t, rate);
2215
2216     pa_pstream_send_tagstruct(s->context->pstream, t);
2217     pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, stream_update_sample_rate_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
2218
2219     return o;
2220 }
2221
2222 pa_operation *pa_stream_proplist_update(pa_stream *s, pa_update_mode_t mode, pa_proplist *p, pa_stream_success_cb_t cb, void *userdata) {
2223     pa_operation *o;
2224     pa_tagstruct *t;
2225     uint32_t tag;
2226
2227     pa_assert(s);
2228     pa_assert(PA_REFCNT_VALUE(s) >= 1);
2229
2230     PA_CHECK_VALIDITY_RETURN_NULL(s->context, mode == PA_UPDATE_SET || mode == PA_UPDATE_MERGE || mode == PA_UPDATE_REPLACE, PA_ERR_INVALID);
2231     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
2232     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
2233     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->context->version >= 13, PA_ERR_NOTSUPPORTED);
2234
2235     o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
2236
2237     t = pa_tagstruct_command(
2238             s->context,
2239             (uint32_t) (s->direction == PA_STREAM_RECORD ? PA_COMMAND_UPDATE_RECORD_STREAM_PROPLIST : PA_COMMAND_UPDATE_PLAYBACK_STREAM_PROPLIST),
2240             &tag);
2241     pa_tagstruct_putu32(t, s->channel);
2242     pa_tagstruct_putu32(t, (uint32_t) mode);
2243     pa_tagstruct_put_proplist(t, p);
2244
2245     pa_pstream_send_tagstruct(s->context->pstream, t);
2246     pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
2247
2248     /* Please note that we don't update s->proplist here, because we
2249      * don't export that field */
2250
2251     return o;
2252 }
2253
2254 pa_operation *pa_stream_proplist_remove(pa_stream *s, const char *const keys[], pa_stream_success_cb_t cb, void *userdata) {
2255     pa_operation *o;
2256     pa_tagstruct *t;
2257     uint32_t tag;
2258     const char * const*k;
2259
2260     pa_assert(s);
2261     pa_assert(PA_REFCNT_VALUE(s) >= 1);
2262
2263     PA_CHECK_VALIDITY_RETURN_NULL(s->context, keys && keys[0], PA_ERR_INVALID);
2264     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->state == PA_STREAM_READY, PA_ERR_BADSTATE);
2265     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->direction != PA_STREAM_UPLOAD, PA_ERR_BADSTATE);
2266     PA_CHECK_VALIDITY_RETURN_NULL(s->context, s->context->version >= 13, PA_ERR_NOTSUPPORTED);
2267
2268     o = pa_operation_new(s->context, s, (pa_operation_cb_t) cb, userdata);
2269
2270     t = pa_tagstruct_command(
2271             s->context,
2272             (uint32_t) (s->direction == PA_STREAM_RECORD ? PA_COMMAND_REMOVE_RECORD_STREAM_PROPLIST : PA_COMMAND_REMOVE_PLAYBACK_STREAM_PROPLIST),
2273             &tag);
2274     pa_tagstruct_putu32(t, s->channel);
2275
2276     for (k = keys; *k; k++)
2277         pa_tagstruct_puts(t, *k);
2278
2279     pa_tagstruct_puts(t, NULL);
2280
2281     pa_pstream_send_tagstruct(s->context->pstream, t);
2282     pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, pa_stream_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
2283
2284     /* Please note that we don't update s->proplist here, because we
2285      * don't export that field */
2286
2287     return o;
2288 }
2289
2290 int pa_stream_set_monitor_stream(pa_stream *s, uint32_t sink_input_idx) {
2291     pa_assert(s);
2292     pa_assert(PA_REFCNT_VALUE(s) >= 1);
2293
2294     PA_CHECK_VALIDITY(s->context, sink_input_idx != PA_INVALID_INDEX, PA_ERR_INVALID);
2295     PA_CHECK_VALIDITY(s->context, s->state == PA_STREAM_UNCONNECTED, PA_ERR_BADSTATE);
2296     PA_CHECK_VALIDITY(s->context, s->context->version >= 13, PA_ERR_NOTSUPPORTED);
2297
2298     s->direct_on_input = sink_input_idx;
2299
2300     return 0;
2301 }
2302
2303 uint32_t pa_stream_get_monitor_stream(pa_stream *s) {
2304     pa_assert(s);
2305     pa_assert(PA_REFCNT_VALUE(s) >= 1);
2306
2307     PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->direct_on_input != PA_INVALID_INDEX, PA_ERR_BADSTATE, PA_INVALID_INDEX);
2308     PA_CHECK_VALIDITY_RETURN_ANY(s->context, s->context->version >= 13, PA_ERR_NOTSUPPORTED, PA_INVALID_INDEX);
2309
2310     return s->direct_on_input;
2311 }