src/modules/module-ladspa-sink.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7
   8   PulseAudio is free software; you can redistribute it and/or modify
   9   it under the terms of the GNU Lesser General Public License as published
  10   by the Free Software Foundation; either version 2 of the License,
  11   or (at your option) any later version.
  12
  13   PulseAudio is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with PulseAudio; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21   USA.
  22 ***/
  23
  24 /* TODO: Some plugins cause latency, and some even report it by using a control
  25    out port. We don't currently use the latency information. */
  26
  27 #ifdef HAVE_CONFIG_H
  28 #include <config.h>
  29 #endif
  30
  31 #include <pulse/xmalloc.h>
  32
  33 #include <pulsecore/core-error.h>
  34 #include <pulsecore/namereg.h>
  35 #include <pulsecore/sink.h>
  36 #include <pulsecore/module.h>
  37 #include <pulsecore/core-util.h>
  38 #include <pulsecore/modargs.h>
  39 #include <pulsecore/log.h>
  40 #include <pulsecore/thread.h>
  41 #include <pulsecore/thread-mq.h>
  42 #include <pulsecore/rtpoll.h>
  43 #include <pulsecore/sample-util.h>
  44
  45 #include "module-ladspa-sink-symdef.h"
  46 #include "ladspa.h"
  47
  48 PA_MODULE_AUTHOR("Lennart Poettering")
  49 PA_MODULE_DESCRIPTION("Virtual LADSPA sink")
  50 PA_MODULE_VERSION(PACKAGE_VERSION)
  51 PA_MODULE_USAGE(
  52         "sink_name=<name for the sink> "
  53         "master=<name of sink to remap> "
  54         "format=<sample format> "
  55         "channels=<number of channels> "
  56         "rate=<sample rate> "
  57         "channel_map=<channel map> "
  58         "plugin=<ladspa plugin name> "
  59         "label=<ladspa plugin label> "
  60         "control=<comma seperated list of input control values>")
  61
  62 struct userdata {
  63     pa_core *core;
  64     pa_module *module;
  65
  66     pa_sink *sink, *master;
  67     pa_sink_input *sink_input;
  68
  69     const LADSPA_Descriptor *descriptor;
  70     unsigned channels;
  71     LADSPA_Handle handle[PA_CHANNELS_MAX];
  72     LADSPA_Data *input, *output;
  73     size_t block_size;
  74     unsigned long input_port, output_port;
  75     LADSPA_Data *control;
  76
  77     /* This is a dummy buffer. Every port must be connected, but we don't care
  78        about control out ports. We connect them all to this single buffer. */
  79     LADSPA_Data control_out;
  80
  81     pa_memchunk memchunk;
  82 };
  83
  84 static const char* const valid_modargs[] = {
  85     "sink_name",
  86     "master",
  87     "format",
  88     "channels",
  89     "rate",
  90     "channel_map",
  91     "plugin",
  92     "label",
  93     "control",
  94     NULL
  95 };
  96
  97 /* Called from I/O thread context */
  98 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
  99     struct userdata *u = PA_SINK(o)->userdata;
 100
 101     switch (code) {
 102
 103         case PA_SINK_MESSAGE_GET_LATENCY: {
 104             pa_usec_t usec = 0;
 105
 106             if (PA_MSGOBJECT(u->master)->process_msg(PA_MSGOBJECT(u->master), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
 107                 usec = 0;
 108
 109             *((pa_usec_t*) data) = usec + pa_bytes_to_usec(u->memchunk.length, &u->sink->sample_spec);
 110             return 0;
 111         }
 112     }
 113
 114     return pa_sink_process_msg(o, code, data, offset, chunk);
 115 }
 116
 117 /* Called from main context */
 118 static int sink_set_state(pa_sink *s, pa_sink_state_t state) {
 119     struct userdata *u;
 120
 121     pa_sink_assert_ref(s);
 122     pa_assert_se(u = s->userdata);
 123
 124     if (PA_SINK_LINKED(state) && u->sink_input && PA_SINK_INPUT_LINKED(pa_sink_input_get_state(u->sink_input)))
 125         pa_sink_input_cork(u->sink_input, state == PA_SINK_SUSPENDED);
 126
 127     return 0;
 128 }
 129
 130 /* Called from I/O thread context */
 131 static int sink_input_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
 132     struct userdata *u = PA_SINK_INPUT(o)->userdata;
 133
 134     switch (code) {
 135         case PA_SINK_INPUT_MESSAGE_GET_LATENCY:
 136             *((pa_usec_t*) data) = pa_bytes_to_usec(u->memchunk.length, &u->sink_input->sample_spec);
 137
 138             /* Fall through, the default handler will add in the extra
 139              * latency added by the resampler */
 140             break;
 141     }
 142
 143     return pa_sink_input_process_msg(o, code, data, offset, chunk);
 144 }
 145
 146 /* Called from I/O thread context */
 147 static int sink_input_peek_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk) {
 148     struct userdata *u;
 149
 150     pa_sink_input_assert_ref(i);
 151     pa_assert_se(u = i->userdata);
 152
 153     if (!u->memchunk.memblock) {
 154         pa_memchunk tchunk;
 155         float *src, *dst;
 156         size_t fs;
 157         unsigned n, c;
 158
 159         pa_sink_render(u->sink, length, &tchunk);
 160
 161         fs = pa_frame_size(&i->sample_spec);
 162         n = tchunk.length / fs;
 163
 164         pa_assert(n > 0);
 165
 166         u->memchunk.memblock = pa_memblock_new(i->sink->core->mempool, tchunk.length);
 167         u->memchunk.index = 0;
 168         u->memchunk.length = tchunk.length;
 169
 170         src = (float*) ((uint8_t*) pa_memblock_acquire(tchunk.memblock) + tchunk.index);
 171         dst = (float*) pa_memblock_acquire(u->memchunk.memblock);
 172
 173         for (c = 0; c < u->channels; c++) {
 174             unsigned j;
 175             float *p, *q;
 176
 177             p = src + c;
 178             q = u->input;
 179             for (j = 0; j < n; j++, p += u->channels, q++)
 180                 *q = CLAMP(*p, -1.0, 1.0);
 181
 182             u->descriptor->run(u->handle[c], n);
 183
 184             q = u->output;
 185             p = dst + c;
 186             for (j = 0; j < n; j++, q++, p += u->channels)
 187                 *p = CLAMP(*q, -1.0, 1.0);
 188         }
 189
 190         pa_memblock_release(tchunk.memblock);
 191         pa_memblock_release(u->memchunk.memblock);
 192
 193         pa_memblock_unref(tchunk.memblock);
 194     }
 195
 196     pa_assert(u->memchunk.length > 0);
 197     pa_assert(u->memchunk.memblock);
 198
 199     *chunk = u->memchunk;
 200     pa_memblock_ref(chunk->memblock);
 201
 202     return 0;
 203 }
 204
 205 /* Called from I/O thread context */
 206 static void sink_input_drop_cb(pa_sink_input *i, size_t length) {
 207     struct userdata *u;
 208
 209     pa_sink_input_assert_ref(i);
 210     pa_assert_se(u = i->userdata);
 211     pa_assert(length > 0);
 212
 213     if (u->memchunk.memblock) {
 214
 215         if (length < u->memchunk.length) {
 216             u->memchunk.index += length;
 217             u->memchunk.length -= length;
 218             return;
 219         }
 220
 221         pa_memblock_unref(u->memchunk.memblock);
 222         length -= u->memchunk.length;
 223         pa_memchunk_reset(&u->memchunk);
 224     }
 225
 226     if (length > 0)
 227         pa_sink_skip(u->sink, length);
 228 }
 229
 230 /* Called from I/O thread context */
 231 static void sink_input_detach_cb(pa_sink_input *i) {
 232     struct userdata *u;
 233
 234     pa_sink_input_assert_ref(i);
 235     pa_assert_se(u = i->userdata);
 236
 237     pa_sink_detach_within_thread(u->sink);
 238 }
 239
 240 /* Called from I/O thread context */
 241 static void sink_input_attach_cb(pa_sink_input *i) {
 242     struct userdata *u;
 243
 244     pa_sink_input_assert_ref(i);
 245     pa_assert_se(u = i->userdata);
 246
 247     pa_sink_set_asyncmsgq(u->sink, i->sink->asyncmsgq);
 248     pa_sink_set_rtpoll(u->sink, i->sink->rtpoll);
 249
 250     pa_sink_attach_within_thread(u->sink);
 251 }
 252
 253 /* Called from main context */
 254 static void sink_input_kill_cb(pa_sink_input *i) {
 255     struct userdata *u;
 256
 257     pa_sink_input_assert_ref(i);
 258     pa_assert_se(u = i->userdata);
 259
 260     pa_sink_input_unlink(u->sink_input);
 261     pa_sink_input_unref(u->sink_input);
 262     u->sink_input = NULL;
 263
 264     pa_sink_unlink(u->sink);
 265     pa_sink_unref(u->sink);
 266     u->sink = NULL;
 267
 268     pa_module_unload_request(u->module);
 269 }
 270
 271 int pa__init(pa_module*m) {
 272     struct userdata *u;
 273     pa_sample_spec ss;
 274     pa_channel_map map;
 275     pa_modargs *ma;
 276     char *t;
 277     pa_sink *master;
 278     pa_sink_input_new_data data;
 279     const char *plugin, *label;
 280     LADSPA_Descriptor_Function descriptor_func;
 281     const char *e, *cdata;
 282     const LADSPA_Descriptor *d;
 283     unsigned long input_port, output_port, p, j, n_control;
 284     unsigned c;
 285     pa_bool_t *use_default = NULL;
 286     char *default_sink_name = NULL;
 287
 288     pa_assert(m);
 289
 290     pa_assert(sizeof(LADSPA_Data) == sizeof(float));
 291
 292     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 293         pa_log("Failed to parse module arguments.");
 294         goto fail;
 295     }
 296
 297     if (!(master = pa_namereg_get(m->core, pa_modargs_get_value(ma, "master", NULL), PA_NAMEREG_SINK, 1))) {
 298         pa_log("Master sink not found");
 299         goto fail;
 300     }
 301
 302     ss = master->sample_spec;
 303     ss.format = PA_SAMPLE_FLOAT32;
 304     map = master->channel_map;
 305     if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
 306         pa_log("Invalid sample format specification or channel map");
 307         goto fail;
 308     }
 309
 310     if (!(plugin = pa_modargs_get_value(ma, "plugin", NULL))) {
 311         pa_log("Missing LADSPA plugin name");
 312         goto fail;
 313     }
 314
 315     if (!(label = pa_modargs_get_value(ma, "label", NULL))) {
 316         pa_log("Missing LADSPA plugin label");
 317         goto fail;
 318     }
 319
 320     cdata = pa_modargs_get_value(ma, "control", NULL);
 321
 322     u = pa_xnew0(struct userdata, 1);
 323     u->core = m->core;
 324     u->module = m;
 325     m->userdata = u;
 326     u->master = master;
 327     pa_memchunk_reset(&u->memchunk);
 328
 329     if (!(e = getenv("LADSPA_PATH")))
 330         e = LADSPA_PATH;
 331
 332     /* FIXME: This is not exactly thread safe */
 333     t = pa_xstrdup(lt_dlgetsearchpath());
 334     lt_dlsetsearchpath(e);
 335     m->dl = lt_dlopenext(plugin);
 336     lt_dlsetsearchpath(t);
 337     pa_xfree(t);
 338
 339     if (!m->dl) {
 340         pa_log("Failed to load LADSPA plugin: %s", lt_dlerror());
 341         goto fail;
 342     }
 343
 344     if (!(descriptor_func = (LADSPA_Descriptor_Function) lt_dlsym(m->dl, "ladspa_descriptor"))) {
 345         pa_log("LADSPA module lacks ladspa_descriptor() symbol.");
 346         goto fail;
 347     }
 348
 349     for (j = 0;; j++) {
 350
 351         if (!(d = descriptor_func(j))) {
 352             pa_log("Failed to find plugin label '%s' in plugin '%s'.", plugin, label);
 353             goto fail;
 354         }
 355
 356         if (strcmp(d->Label, label) == 0)
 357             break;
 358     }
 359
 360     u->descriptor = d;
 361
 362     pa_log_debug("Module: %s", plugin);
 363     pa_log_debug("Label: %s", d->Label);
 364     pa_log_debug("Unique ID: %lu", d->UniqueID);
 365     pa_log_debug("Name: %s", d->Name);
 366     pa_log_debug("Maker: %s", d->Maker);
 367     pa_log_debug("Copyright: %s", d->Copyright);
 368
 369     input_port = output_port = (unsigned long) -1;
 370     n_control = 0;
 371
 372     for (p = 0; p < d->PortCount; p++) {
 373
 374         if (LADSPA_IS_PORT_INPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_AUDIO(d->PortDescriptors[p])) {
 375
 376             if (strcmp(d->PortNames[p], "Input") == 0) {
 377                 pa_assert(input_port == (unsigned long) -1);
 378                 input_port = p;
 379             } else {
 380                 pa_log("Found audio input port on plugin we cannot handle: %s", d->PortNames[p]);
 381                 goto fail;
 382             }
 383
 384         } else if (LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_AUDIO(d->PortDescriptors[p])) {
 385
 386             if (strcmp(d->PortNames[p], "Output") == 0) {
 387                 pa_assert(output_port == (unsigned long) -1);
 388                 output_port = p;
 389             } else {
 390                 pa_log("Found audio output port on plugin we cannot handle: %s", d->PortNames[p]);
 391                 goto fail;
 392             }
 393
 394         } else if (LADSPA_IS_PORT_INPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]))
 395             n_control++;
 396         else {
 397             pa_assert(LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]));
 398             pa_log_info("Ignored port \"%s\", because we ignore all control out ports.", d->PortNames[p]);
 399         }
 400     }
 401
 402     if ((input_port == (unsigned long) -1) || (output_port == (unsigned long) -1)) {
 403         pa_log("Failed to identify input and output ports. "
 404                "Right now this module can only deal with plugins which provide an 'Input' and an 'Output' audio port. "
 405                "Patches welcome!");
 406         goto fail;
 407     }
 408
 409     u->block_size = pa_frame_align(pa_mempool_block_size_max(m->core->mempool), &ss);
 410
 411     u->input = (LADSPA_Data*) pa_xnew(uint8_t, u->block_size);
 412     if (LADSPA_IS_INPLACE_BROKEN(d->Properties))
 413         u->output = (LADSPA_Data*) pa_xnew(uint8_t, u->block_size);
 414     else
 415         u->output = u->input;
 416
 417     u->channels = ss.channels;
 418
 419     for (c = 0; c < ss.channels; c++) {
 420         if (!(u->handle[c] = d->instantiate(d, ss.rate))) {
 421             pa_log("Failed to instantiate plugin %s with label %s for channel %i", plugin, d->Label, c);
 422             goto fail;
 423         }
 424
 425         d->connect_port(u->handle[c], input_port, u->input);
 426         d->connect_port(u->handle[c], output_port, u->output);
 427     }
 428
 429     if (!cdata && n_control > 0) {
 430         pa_log("This plugin requires specification of %lu control parameters.", n_control);
 431         goto fail;
 432     }
 433
 434     if (n_control > 0) {
 435         const char *state = NULL;
 436         char *k;
 437         unsigned long h;
 438
 439         u->control = pa_xnew(LADSPA_Data, n_control);
 440         use_default = pa_xnew(pa_bool_t, n_control);
 441         p = 0;
 442
 443         while ((k = pa_split(cdata, ",", &state))) {
 444             float f;
 445
 446             if (*k == 0) {
 447                 use_default[p++] = TRUE;
 448                 pa_xfree(k);
 449                 continue;
 450             }
 451
 452             if (pa_atof(k, &f) < 0) {
 453                 pa_log("Failed to parse control value '%s'", k);
 454                 pa_xfree(k);
 455                 goto fail;
 456             }
 457
 458             pa_xfree(k);
 459
 460             if (p >= n_control) {
 461                 pa_log("Too many control values passed, %lu expected.", n_control);
 462                 goto fail;
 463             }
 464
 465             use_default[p] = FALSE;
 466             u->control[p++] = f;
 467         }
 468
 469         if (p < n_control) {
 470             pa_log("Not enough control values passed, %lu expected, %lu passed.", n_control, p);
 471             goto fail;
 472         }
 473
 474         h = 0;
 475         for (p = 0; p < d->PortCount; p++) {
 476             LADSPA_PortRangeHintDescriptor hint = d->PortRangeHints[p].HintDescriptor;
 477
 478             if (!LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]))
 479                 continue;
 480
 481             if (LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p])) {
 482                 for (c = 0; c < ss.channels; c++)
 483                     d->connect_port(u->handle[c], p, &u->control_out);
 484                 continue;
 485             }
 486
 487             pa_assert(h < n_control);
 488
 489             if (use_default[h]) {
 490                 LADSPA_Data lower, upper;
 491
 492                 if (!LADSPA_IS_HINT_HAS_DEFAULT(hint)) {
 493                     pa_log("Control port value left empty but plugin defines no default.");
 494                     goto fail;
 495                 }
 496
 497                 lower = d->PortRangeHints[p].LowerBound;
 498                 upper = d->PortRangeHints[p].UpperBound;
 499
 500                 if (LADSPA_IS_HINT_SAMPLE_RATE(hint)) {
 501                     lower *= ss.rate;
 502                     upper *= ss.rate;
 503                 }
 504
 505                 switch (hint & LADSPA_HINT_DEFAULT_MASK) {
 506
 507                     case LADSPA_HINT_DEFAULT_MINIMUM:
 508                         u->control[h] = lower;
 509                         break;
 510
 511                     case LADSPA_HINT_DEFAULT_MAXIMUM:
 512                         u->control[h] = upper;
 513                         break;
 514
 515                     case LADSPA_HINT_DEFAULT_LOW:
 516                         if (LADSPA_IS_HINT_LOGARITHMIC(hint))
 517                             u->control[h] = exp(log(lower) * 0.75 + log(upper) * 0.25);
 518                         else
 519                             u->control[h] = lower * 0.75 + upper * 0.25;
 520                         break;
 521
 522                     case LADSPA_HINT_DEFAULT_MIDDLE:
 523                         if (LADSPA_IS_HINT_LOGARITHMIC(hint))
 524                             u->control[h] = exp(log(lower) * 0.5 + log(upper) * 0.5);
 525                         else
 526                             u->control[h] = lower * 0.5 + upper * 0.5;
 527                         break;
 528
 529                     case LADSPA_HINT_DEFAULT_HIGH:
 530                         if (LADSPA_IS_HINT_LOGARITHMIC(hint))
 531                             u->control[h] = exp(log(lower) * 0.25 + log(upper) * 0.75);
 532                         else
 533                             u->control[h] = lower * 0.25 + upper * 0.75;
 534                         break;
 535
 536                     case LADSPA_HINT_DEFAULT_0:
 537                         u->control[h] = 0;
 538                         break;
 539
 540                     case LADSPA_HINT_DEFAULT_1:
 541                         u->control[h] = 1;
 542                         break;
 543
 544                     case LADSPA_HINT_DEFAULT_100:
 545                         u->control[h] = 100;
 546                         break;
 547
 548                     case LADSPA_HINT_DEFAULT_440:
 549                         u->control[h] = 440;
 550                         break;
 551
 552                     default:
 553                         pa_assert_not_reached();
 554                 }
 555             }
 556
 557             if (LADSPA_IS_HINT_INTEGER(hint))
 558                 u->control[h] = roundf(u->control[h]);
 559
 560             pa_log_debug("Binding %f to port %s", u->control[h], d->PortNames[p]);
 561
 562             for (c = 0; c < ss.channels; c++)
 563                 d->connect_port(u->handle[c], p, &u->control[h]);
 564
 565             h++;
 566         }
 567
 568         pa_assert(h == n_control);
 569     }
 570
 571     if (d->activate)
 572         for (c = 0; c < u->channels; c++)
 573             d->activate(u->handle[c]);
 574
 575     default_sink_name = pa_sprintf_malloc("%s.ladspa", master->name);
 576
 577     /* Create sink */
 578     if (!(u->sink = pa_sink_new(m->core, __FILE__, pa_modargs_get_value(ma, "sink_name", default_sink_name), 0, &ss, &map))) {
 579         pa_log("Failed to create sink.");
 580         goto fail;
 581     }
 582
 583     u->sink->parent.process_msg = sink_process_msg;
 584     u->sink->set_state = sink_set_state;
 585     u->sink->userdata = u;
 586     u->sink->flags = PA_SINK_LATENCY;
 587
 588     pa_sink_set_module(u->sink, m);
 589     pa_sink_set_description(u->sink, t = pa_sprintf_malloc("LADSPA plugin '%s' on '%s'", label, master->description));
 590     pa_xfree(t);
 591     pa_sink_set_asyncmsgq(u->sink, master->asyncmsgq);
 592     pa_sink_set_rtpoll(u->sink, master->rtpoll);
 593
 594     /* Create sink input */
 595     pa_sink_input_new_data_init(&data);
 596     data.sink = u->master;
 597     data.driver = __FILE__;
 598     data.name = "LADSPA Stream";
 599     pa_sink_input_new_data_set_sample_spec(&data, &ss);
 600     pa_sink_input_new_data_set_channel_map(&data, &map);
 601     data.module = m;
 602
 603     if (!(u->sink_input = pa_sink_input_new(m->core, &data, PA_SINK_INPUT_DONT_MOVE)))
 604         goto fail;
 605
 606     u->sink_input->parent.process_msg = sink_input_process_msg;
 607     u->sink_input->peek = sink_input_peek_cb;
 608     u->sink_input->drop = sink_input_drop_cb;
 609     u->sink_input->kill = sink_input_kill_cb;
 610     u->sink_input->attach = sink_input_attach_cb;
 611     u->sink_input->detach = sink_input_detach_cb;
 612     u->sink_input->userdata = u;
 613
 614     pa_sink_put(u->sink);
 615     pa_sink_input_put(u->sink_input);
 616
 617     pa_modargs_free(ma);
 618
 619     pa_xfree(use_default);
 620     pa_xfree(default_sink_name);
 621
 622     return 0;
 623
 624 fail:
 625     if (ma)
 626         pa_modargs_free(ma);
 627
 628     pa_xfree(use_default);
 629     pa_xfree(default_sink_name);
 630
 631     pa__done(m);
 632
 633     return -1;
 634 }
 635
 636 void pa__done(pa_module*m) {
 637     struct userdata *u;
 638     unsigned c;
 639
 640     pa_assert(m);
 641
 642     if (!(u = m->userdata))
 643         return;
 644
 645     if (u->sink_input) {
 646         pa_sink_input_unlink(u->sink_input);
 647         pa_sink_input_unref(u->sink_input);
 648     }
 649
 650     if (u->sink) {
 651         pa_sink_unlink(u->sink);
 652         pa_sink_unref(u->sink);
 653     }
 654
 655     if (u->memchunk.memblock)
 656         pa_memblock_unref(u->memchunk.memblock);
 657
 658     for (c = 0; c < u->channels; c++)
 659         if (u->handle[c]) {
 660             if (u->descriptor->deactivate)
 661                 u->descriptor->deactivate(u->handle[c]);
 662             u->descriptor->cleanup(u->handle[c]);
 663         }
 664
 665     if (u->output != u->input)
 666         pa_xfree(u->output);
 667
 668     pa_xfree(u->input);
 669
 670     pa_xfree(u->control);
 671
 672     pa_xfree(u);
 673 }