code.delx.au - pulseaudio/blob - polyp/module-tunnel.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   polypaudio 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   General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with polypaudio; 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 <unistd.h>
  27 #include <assert.h>
  28 #include <string.h>
  29 #include <errno.h>
  30 #include <sys/types.h>
  31 #include <regex.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34
  35 #include "module.h"
  36 #include "util.h"
  37 #include "modargs.h"
  38 #include "log.h"
  39 #include "subscribe.h"
  40 #include "xmalloc.h"
  41 #include "sink-input.h"
  42 #include "pdispatch.h"
  43 #include "pstream.h"
  44 #include "pstream-util.h"
  45 #include "authkey.h"
  46 #include "socket-client.h"
  47 #include "socket-util.h"
  48
  49 PA_MODULE_AUTHOR("Lennart Poettering")
  50 PA_MODULE_VERSION(PACKAGE_VERSION)
  51
  52 #ifdef TUNNEL_SINK
  53 PA_MODULE_DESCRIPTION("Tunnel module for sinks")
  54 PA_MODULE_USAGE("server=<filename> sink=<remote sink name> cookie=<filename> format=<sample format> channels=<number of channels> rate=<sample rate> sink_name=<name for the local sink>")
  55 #else
  56 PA_MODULE_DESCRIPTION("Tunnel module for sources")
  57 PA_MODULE_USAGE("server=<filename> source=<remote source name> cookie=<filename> format=<sample format> channels=<number of channels> rate=<sample rate> source_name=<name for the local source>")
  58 #endif
  59
  60 #define DEFAULT_SINK_NAME "tunnel"
  61 #define DEFAULT_SOURCE_NAME "tunnel"
  62
  63 #define DEFAULT_TLENGTH (44100*2*2/10)  //(10240*8)
  64 #define DEFAULT_MAXLENGTH ((DEFAULT_TLENGTH*3)/2)
  65 #define DEFAULT_MINREQ 512
  66 #define DEFAULT_PREBUF (DEFAULT_TLENGTH-DEFAULT_MINREQ)
  67 #define DEFAULT_FRAGSIZE 1024
  68
  69 #define DEFAULT_TIMEOUT 5
  70
  71 #define LATENCY_INTERVAL 10
  72
  73 static const char* const valid_modargs[] = {
  74     "server",
  75     "cookie",
  76     "format",
  77     "channels",
  78     "rate",
  79 #ifdef TUNNEL_SINK
  80     "sink_name",
  81     "sink",
  82 #else
  83     "source_name",
  84     "source",
  85 #endif
  86     NULL,
  87 };
  88
  89 static void command_stream_killed(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
  90
  91 #ifdef TUNNEL_SINK
  92 static void command_request(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
  93 #endif
  94
  95 static const struct pa_pdispatch_command command_table[PA_COMMAND_MAX] = {
  96 #ifdef TUNNEL_SINK
  97     [PA_COMMAND_REQUEST] = { command_request },
  98 #endif
  99     [PA_COMMAND_PLAYBACK_STREAM_KILLED] = { command_stream_killed },
 100     [PA_COMMAND_RECORD_STREAM_KILLED] = { command_stream_killed },
 101 };
 102
 103 struct userdata {
 104     struct pa_socket_client *client;
 105     struct pa_pstream *pstream;
 106     struct pa_pdispatch *pdispatch;
 107
 108     char *server_name;
 109 #ifdef TUNNEL_SINK
 110     char *sink_name;
 111     struct pa_sink *sink;
 112     uint32_t requested_bytes;
 113 #else
 114     char *source_name;
 115     struct pa_source *source;
 116 #endif
 117
 118     struct pa_module *module;
 119     struct pa_core *core;
 120
 121     uint8_t auth_cookie[PA_NATIVE_COOKIE_LENGTH];
 122
 123     uint32_t ctag;
 124     uint32_t device_index;
 125     uint32_t channel;
 126
 127     pa_usec_t host_latency;
 128
 129     struct pa_time_event *time_event;
 130 };
 131
 132
 133 static void close_stuff(struct userdata *u) {
 134     if (u->pstream) {
 135         pa_pstream_close(u->pstream);
 136         pa_pstream_unref(u->pstream);
 137         u->pstream = NULL;
 138     }
 139
 140     if (u->pdispatch) {
 141         pa_pdispatch_unref(u->pdispatch);
 142         u->pdispatch = NULL;
 143     }
 144
 145     if (u->client) {
 146         pa_socket_client_unref(u->client);
 147         u->client = NULL;
 148     }
 149
 150 #ifdef TUNNEL_SINK
 151     if (u->sink) {
 152         pa_sink_disconnect(u->sink);
 153         pa_sink_unref(u->sink);
 154         u->sink = NULL;
 155     }
 156 #else
 157     if (u->source) {
 158         pa_source_disconnect(u->source);
 159         pa_source_unref(u->source);
 160         u->source = NULL;
 161     }
 162 #endif
 163
 164     if (u->time_event) {
 165         u->core->mainloop->time_free(u->time_event);
 166         u->time_event = NULL;
 167     }
 168 }
 169
 170 static void die(struct userdata *u) {
 171     assert(u);
 172     close_stuff(u);
 173     pa_module_unload_request(u->module);
 174 }
 175
 176 static void command_stream_killed(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 177     struct userdata *u = userdata;
 178     assert(pd && t && u && u->pdispatch == pd);
 179
 180     pa_log(__FILE__": stream killed\n");
 181     die(u);
 182 }
 183
 184 #ifdef TUNNEL_SINK
 185 static void send_prebuf_request(struct userdata *u) {
 186     struct pa_tagstruct *t;
 187
 188     t = pa_tagstruct_new(NULL, 0);
 189     pa_tagstruct_putu32(t, PA_COMMAND_PREBUF_PLAYBACK_STREAM);
 190     pa_tagstruct_putu32(t, u->ctag++);
 191     pa_tagstruct_putu32(t, u->channel);
 192     pa_pstream_send_tagstruct(u->pstream, t);
 193 }
 194
 195 static void send_bytes(struct userdata *u) {
 196     assert(u);
 197
 198     if (!u->pstream)
 199         return;
 200
 201     while (u->requested_bytes > 0) {
 202         struct pa_memchunk chunk;
 203         if (pa_sink_render(u->sink, u->requested_bytes, &chunk) < 0) {
 204
 205
 206             if (u->requested_bytes >= DEFAULT_TLENGTH-DEFAULT_PREBUF)
 207                 send_prebuf_request(u);
 208
 209             return;
 210         }
 211
 212         pa_pstream_send_memblock(u->pstream, u->channel, 0, &chunk);
 213         pa_memblock_unref(chunk.memblock);
 214
 215         if (chunk.length > u->requested_bytes)
 216             u->requested_bytes = 0;
 217         else
 218             u->requested_bytes -= chunk.length;
 219     }
 220 }
 221
 222 static void command_request(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 223     struct userdata *u = userdata;
 224     uint32_t bytes, channel;
 225     assert(pd && command == PA_COMMAND_REQUEST && t && u && u->pdispatch == pd);
 226
 227     if (pa_tagstruct_getu32(t, &channel) < 0 ||
 228         pa_tagstruct_getu32(t, &bytes) < 0 ||
 229         !pa_tagstruct_eof(t)) {
 230         pa_log(__FILE__": invalid protocol reply\n");
 231         die(u);
 232         return;
 233     }
 234
 235     if (channel != u->channel) {
 236         pa_log(__FILE__": recieved data for invalid channel\n");
 237         die(u);
 238         return;
 239     }
 240
 241     u->requested_bytes += bytes;
 242     send_bytes(u);
 243 }
 244
 245 #endif
 246
 247 static void stream_get_latency_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 248     struct userdata *u = userdata;
 249     pa_usec_t buffer_usec, sink_usec, source_usec, transport_usec;
 250     int playing;
 251     uint32_t queue_length;
 252     struct timeval local, remote, now;
 253     assert(pd && u && t);
 254
 255     if (command != PA_COMMAND_REPLY) {
 256         if (command == PA_COMMAND_ERROR)
 257             pa_log(__FILE__": failed to get latency.\n");
 258         else
 259             pa_log(__FILE__": protocol error.\n");
 260         die(u);
 261         return;
 262     }
 263
 264     if (pa_tagstruct_get_usec(t, &buffer_usec) < 0 ||
 265         pa_tagstruct_get_usec(t, &sink_usec) < 0 ||
 266         pa_tagstruct_get_usec(t, &source_usec) < 0 ||
 267         pa_tagstruct_get_boolean(t, &playing) < 0 ||
 268         pa_tagstruct_getu32(t, &queue_length) < 0 ||
 269         pa_tagstruct_get_timeval(t, &local) < 0 ||
 270         pa_tagstruct_get_timeval(t, &remote) < 0 ||
 271         !pa_tagstruct_eof(t)) {
 272         pa_log(__FILE__": invalid reply.\n");
 273         die(u);
 274         return;
 275     }
 276
 277     gettimeofday(&now, NULL);
 278
 279     if (pa_timeval_cmp(&local, &remote) < 0 && pa_timeval_cmp(&remote, &now)) {
 280         /* local and remote seem to have synchronized clocks */
 281 #ifdef TUNNEL_SINK
 282         transport_usec = pa_timeval_diff(&remote, &local);
 283 #else
 284         transport_usec = pa_timeval_diff(&now, &remote);
 285 #endif
 286     } else
 287         transport_usec = pa_timeval_diff(&now, &local)/2;
 288
 289 #ifdef TUNNEL_SINK
 290     u->host_latency = sink_usec + transport_usec;
 291 #else
 292     u->host_latency = source_usec + transport_usec;
 293     if (u->host_latency > sink_usec)
 294         u->host_latency -= sink_usec;
 295     else
 296         u->host_latency = 0;
 297 #endif
 298
 299 /*     pa_log(__FILE__": estimated host latency: %0.0f usec\n", (double) u->host_latency); */
 300 }
 301
 302 static void request_latency(struct userdata *u) {
 303     struct pa_tagstruct *t;
 304     struct timeval now;
 305     uint32_t tag;
 306     assert(u);
 307
 308     t = pa_tagstruct_new(NULL, 0);
 309 #ifdef TUNNEL_SINK
 310     pa_tagstruct_putu32(t, PA_COMMAND_GET_PLAYBACK_LATENCY);
 311 #else
 312     pa_tagstruct_putu32(t, PA_COMMAND_GET_RECORD_LATENCY);
 313 #endif
 314     pa_tagstruct_putu32(t, tag = u->ctag++);
 315     pa_tagstruct_putu32(t, u->channel);
 316
 317     gettimeofday(&now, NULL);
 318     pa_tagstruct_put_timeval(t, &now);
 319
 320     pa_pstream_send_tagstruct(u->pstream, t);
 321     pa_pdispatch_register_reply(u->pdispatch, tag, DEFAULT_TIMEOUT, stream_get_latency_callback, u);
 322 }
 323
 324 static void create_stream_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 325     struct userdata *u = userdata;
 326     assert(pd && u && u->pdispatch == pd);
 327
 328     if (command != PA_COMMAND_REPLY) {
 329         if (command == PA_COMMAND_ERROR)
 330             pa_log(__FILE__": failed to create stream.\n");
 331         else
 332             pa_log(__FILE__": protocol error.\n");
 333         die(u);
 334         return;
 335     }
 336
 337     if (pa_tagstruct_getu32(t, &u->channel) < 0 ||
 338         pa_tagstruct_getu32(t, &u->device_index) < 0 ||
 339 #ifdef TUNNEL_SINK
 340         pa_tagstruct_getu32(t, &u->requested_bytes) < 0 ||
 341 #endif
 342         !pa_tagstruct_eof(t)) {
 343         pa_log(__FILE__": invalid reply.\n");
 344         die(u);
 345         return;
 346     }
 347
 348     request_latency(u);
 349 #ifdef TUNNEL_SINK
 350     send_bytes(u);
 351 #endif
 352 }
 353
 354 static void setup_complete_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
 355     struct userdata *u = userdata;
 356     struct pa_tagstruct *reply;
 357     char name[256], un[128], hn[128];
 358     assert(pd && u && u->pdispatch == pd);
 359
 360     if (command != PA_COMMAND_REPLY || !pa_tagstruct_eof(t)) {
 361         if (command == PA_COMMAND_ERROR)
 362             pa_log(__FILE__": failed to authenticate\n");
 363         else
 364             pa_log(__FILE__": protocol error.\n");
 365         die(u);
 366         return;
 367     }
 368 #ifdef TUNNEL_SINK
 369     snprintf(name, sizeof(name), "Tunnel from host '%s', user '%s', sink '%s'",
 370              pa_get_host_name(hn, sizeof(hn)),
 371              pa_get_user_name(un, sizeof(un)),
 372              u->sink->name);
 373 #else
 374     snprintf(name, sizeof(name), "Tunnel from host '%s', user '%s', source '%s'",
 375              pa_get_host_name(hn, sizeof(hn)),
 376              pa_get_user_name(un, sizeof(un)),
 377              u->source->name);
 378 #endif
 379
 380     reply = pa_tagstruct_new(NULL, 0);
 381     pa_tagstruct_putu32(reply, PA_COMMAND_SET_CLIENT_NAME);
 382     pa_tagstruct_putu32(reply, tag = u->ctag++);
 383     pa_tagstruct_puts(reply, name);
 384     pa_pstream_send_tagstruct(u->pstream, reply);
 385     /* We ignore the server's reply here */
 386
 387     reply = pa_tagstruct_new(NULL, 0);
 388 #ifdef TUNNEL_SINK
 389     pa_tagstruct_putu32(reply, PA_COMMAND_CREATE_PLAYBACK_STREAM);
 390     pa_tagstruct_putu32(reply, tag = u->ctag++);
 391     pa_tagstruct_puts(reply, name);
 392     pa_tagstruct_put_sample_spec(reply, &u->sink->sample_spec);
 393     pa_tagstruct_putu32(reply, PA_INVALID_INDEX);
 394     pa_tagstruct_puts(reply, u->sink_name);
 395     pa_tagstruct_putu32(reply, DEFAULT_MAXLENGTH);
 396     pa_tagstruct_put_boolean(reply, 0);
 397     pa_tagstruct_putu32(reply, DEFAULT_TLENGTH);
 398     pa_tagstruct_putu32(reply, DEFAULT_PREBUF);
 399     pa_tagstruct_putu32(reply, DEFAULT_MINREQ);
 400     pa_tagstruct_putu32(reply, PA_VOLUME_NORM);
 401 #else
 402     pa_tagstruct_putu32(reply, PA_COMMAND_CREATE_RECORD_STREAM);
 403     pa_tagstruct_putu32(reply, tag = u->ctag++);
 404     pa_tagstruct_puts(reply, name);
 405     pa_tagstruct_put_sample_spec(reply, &u->source->sample_spec);
 406     pa_tagstruct_putu32(reply, PA_INVALID_INDEX);
 407     pa_tagstruct_puts(reply, u->source_name);
 408     pa_tagstruct_putu32(reply, DEFAULT_MAXLENGTH);
 409     pa_tagstruct_put_boolean(reply, 0);
 410     pa_tagstruct_putu32(reply, DEFAULT_FRAGSIZE);
 411 #endif
 412
 413     pa_pstream_send_tagstruct(u->pstream, reply);
 414     pa_pdispatch_register_reply(u->pdispatch, tag, DEFAULT_TIMEOUT, create_stream_callback, u);
 415 }
 416
 417 static void pstream_die_callback(struct pa_pstream *p, void *userdata) {
 418     struct userdata *u = userdata;
 419     assert(p && u);
 420
 421     pa_log(__FILE__": stream died.\n");
 422     die(u);
 423 }
 424
 425
 426 static void pstream_packet_callback(struct pa_pstream *p, struct pa_packet *packet, void *userdata) {
 427     struct userdata *u = userdata;
 428     assert(p && packet && u);
 429
 430     if (pa_pdispatch_run(u->pdispatch, packet, u) < 0) {
 431         pa_log(__FILE__": invalid packet\n");
 432         die(u);
 433     }
 434 }
 435
 436 #ifndef TUNNEL_SINK
 437 static void pstream_memblock_callback(struct pa_pstream *p, uint32_t channel, uint32_t delta, const struct pa_memchunk *chunk, void *userdata) {
 438     struct userdata *u = userdata;
 439     assert(p && chunk && u);
 440
 441     if (channel != u->channel) {
 442         pa_log(__FILE__": recieved memory block on bad channel.\n");
 443         die(u);
 444         return;
 445     }
 446
 447     pa_source_post(u->source, chunk);
 448 }
 449 #endif
 450
 451 static void on_connection(struct pa_socket_client *sc, struct pa_iochannel *io, void *userdata) {
 452     struct userdata *u = userdata;
 453     struct pa_tagstruct *t;
 454     uint32_t tag;
 455     assert(sc && u && u->client == sc);
 456
 457     pa_socket_client_unref(u->client);
 458     u->client = NULL;
 459
 460     if (!io) {
 461         pa_log(__FILE__": connection failed.\n");
 462         pa_module_unload_request(u->module);
 463         return;
 464     }
 465
 466     u->pstream = pa_pstream_new(u->core->mainloop, io, u->core->memblock_stat);
 467     u->pdispatch = pa_pdispatch_new(u->core->mainloop, command_table, PA_COMMAND_MAX);
 468
 469     pa_pstream_set_die_callback(u->pstream, pstream_die_callback, u);
 470     pa_pstream_set_recieve_packet_callback(u->pstream, pstream_packet_callback, u);
 471 #ifndef TUNNEL_SINK
 472     pa_pstream_set_recieve_memblock_callback(u->pstream, pstream_memblock_callback, u);
 473 #endif
 474
 475     t = pa_tagstruct_new(NULL, 0);
 476     pa_tagstruct_putu32(t, PA_COMMAND_AUTH);
 477     pa_tagstruct_putu32(t, tag = u->ctag++);
 478     pa_tagstruct_put_arbitrary(t, u->auth_cookie, sizeof(u->auth_cookie));
 479     pa_pstream_send_tagstruct(u->pstream, t);
 480     pa_pdispatch_register_reply(u->pdispatch, tag, DEFAULT_TIMEOUT, setup_complete_callback, u);
 481
 482 }
 483
 484 #ifdef TUNNEL_SINK
 485 static void sink_notify(struct pa_sink*sink) {
 486     struct userdata *u;
 487     assert(sink && sink->userdata);
 488     u = sink->userdata;
 489
 490     send_bytes(u);
 491 }
 492
 493 static pa_usec_t sink_get_latency(struct pa_sink *sink) {
 494     struct userdata *u;
 495     uint32_t l;
 496     pa_usec_t usec = 0;
 497     assert(sink && sink->userdata);
 498     u = sink->userdata;
 499
 500     l = DEFAULT_TLENGTH;
 501
 502     if (l > u->requested_bytes) {
 503         l -= u->requested_bytes;
 504         usec += pa_bytes_to_usec(l, &u->sink->sample_spec);
 505     }
 506
 507     usec += u->host_latency;
 508
 509     return usec;
 510 }
 511 #else
 512 static pa_usec_t source_get_latency(struct pa_source *source) {
 513     struct userdata *u;
 514     assert(source && source->userdata);
 515     u = source->userdata;
 516
 517     return u->host_latency;
 518 }
 519 #endif
 520
 521 static void timeout_callback(struct pa_mainloop_api *m, struct pa_time_event*e, const struct timeval *tv, void *userdata) {
 522     struct userdata *u = userdata;
 523     struct timeval ntv;
 524     assert(m && e && u);
 525
 526     request_latency(u);
 527
 528     gettimeofday(&ntv, NULL);
 529     ntv.tv_sec += LATENCY_INTERVAL;
 530     m->time_restart(e, &ntv);
 531 }
 532
 533 int pa__init(struct pa_core *c, struct pa_module*m) {
 534     struct pa_modargs *ma = NULL;
 535     struct userdata *u = NULL;
 536     struct pa_sample_spec ss;
 537     struct timeval ntv;
 538     assert(c && m);
 539
 540     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 541         pa_log(__FILE__": failed to parse module arguments\n");
 542         goto fail;
 543     }
 544
 545     u = pa_xmalloc(sizeof(struct userdata));
 546     m->userdata = u;
 547     u->module = m;
 548     u->core = c;
 549     u->client = NULL;
 550     u->pdispatch = NULL;
 551     u->pstream = NULL;
 552     u->server_name = NULL;
 553 #ifdef TUNNEL_SINK
 554     u->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));;
 555     u->sink = NULL;
 556     u->requested_bytes = 0;
 557 #else
 558     u->source_name = pa_xstrdup(pa_modargs_get_value(ma, "source", NULL));;
 559     u->source = NULL;
 560 #endif
 561     u->ctag = 1;
 562     u->device_index = u->channel = PA_INVALID_INDEX;
 563     u->host_latency = 0;
 564
 565     if (pa_authkey_load_from_home(pa_modargs_get_value(ma, "cookie", PA_NATIVE_COOKIE_FILE), u->auth_cookie, sizeof(u->auth_cookie)) < 0) {
 566         pa_log(__FILE__": failed to load cookie.\n");
 567         goto fail;
 568     }
 569
 570     if (!(u->server_name = pa_xstrdup(pa_modargs_get_value(ma, "server", NULL)))) {
 571         pa_log(__FILE__": no server specified.\n");
 572         goto fail;
 573     }
 574
 575     ss = c->default_sample_spec;
 576     if (pa_modargs_get_sample_spec(ma, &ss) < 0) {
 577         pa_log(__FILE__": invalid sample format specification\n");
 578         goto fail;
 579     }
 580
 581     if (u->server_name[0] == '/')
 582         u->client = pa_socket_client_new_unix(c->mainloop, u->server_name);
 583     else {
 584         size_t len;
 585         struct sockaddr *sa;
 586
 587         if (!(sa = pa_resolve_server(u->server_name, &len, PA_NATIVE_DEFAULT_PORT))) {
 588             pa_log(__FILE__": failed to resolve server '%s'\n", u->server_name);
 589             goto fail;
 590         }
 591
 592         u->client = pa_socket_client_new_sockaddr(c->mainloop, sa, len);
 593         pa_xfree(sa);
 594     }
 595
 596     if (!u->client)
 597         goto fail;
 598
 599     pa_socket_client_set_callback(u->client, on_connection, u);
 600
 601 #ifdef TUNNEL_SINK
 602     if (!(u->sink = pa_sink_new(c, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss))) {
 603         pa_log(__FILE__": failed to create sink.\n");
 604         goto fail;
 605     }
 606
 607     u->sink->notify = sink_notify;
 608     u->sink->get_latency = sink_get_latency;
 609     u->sink->userdata = u;
 610     u->sink->description = pa_sprintf_malloc("Tunnel to '%s%s%s'", u->sink_name ? u->sink_name : "", u->sink_name ? "@" : "", u->server_name);
 611
 612     pa_sink_set_owner(u->sink, m);
 613 #else
 614     if (!(u->source = pa_source_new(c, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss))) {
 615         pa_log(__FILE__": failed to create source.\n");
 616         goto fail;
 617     }
 618
 619     u->source->get_latency = source_get_latency;
 620     u->source->userdata = u;
 621     u->source->description = pa_sprintf_malloc("Tunnel to '%s%s%s'", u->source_name ? u->source_name : "", u->source_name ? "@" : "", u->server_name);
 622
 623     pa_source_set_owner(u->source, m);
 624 #endif
 625
 626     gettimeofday(&ntv, NULL);
 627     ntv.tv_sec += LATENCY_INTERVAL;
 628     u->time_event = c->mainloop->time_new(c->mainloop, &ntv, timeout_callback, u);
 629
 630     pa_modargs_free(ma);
 631
 632     return 0;
 633
 634 fail:
 635     pa__done(c, m);
 636
 637     if (ma)
 638         pa_modargs_free(ma);
 639     return  -1;
 640 }
 641
 642 void pa__done(struct pa_core *c, struct pa_module*m) {
 643     struct userdata* u;
 644     assert(c && m);
 645
 646     if (!(u = m->userdata))
 647         return;
 648
 649     close_stuff(u);
 650
 651 #ifdef TUNNEL_SINK
 652     pa_xfree(u->sink_name);
 653 #else
 654     pa_xfree(u->source_name);
 655 #endif
 656     pa_xfree(u->server_name);
 657
 658     pa_xfree(u);
 659 }
 660
 661