code.delx.au - pulseaudio/blob - src/modules/module-ladspa-sink.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2008 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 #include <pulsecore/ltdl-helper.h>
  45
  46 #include "module-ladspa-sink-symdef.h"
  47 #include "ladspa.h"
  48
  49 PA_MODULE_AUTHOR("Lennart Poettering");
  50 PA_MODULE_DESCRIPTION("Virtual LADSPA sink");
  51 PA_MODULE_VERSION(PACKAGE_VERSION);
  52 PA_MODULE_LOAD_ONCE(FALSE);
  53 PA_MODULE_USAGE(
  54         "sink_name=<name for the sink> "
  55         "master=<name of sink to remap> "
  56         "format=<sample format> "
  57         "channels=<number of channels> "
  58         "rate=<sample rate> "
  59         "channel_map=<channel map> "
  60         "plugin=<ladspa plugin name> "
  61         "label=<ladspa plugin label> "
  62         "control=<comma seperated list of input control values>");
  63
  64 #define MEMBLOCKQ_MAXLENGTH (16*1024*1024)
  65
  66 struct userdata {
  67     pa_core *core;
  68     pa_module *module;
  69
  70     pa_sink *sink, *master;
  71     pa_sink_input *sink_input;
  72
  73     const LADSPA_Descriptor *descriptor;
  74     unsigned channels;
  75     LADSPA_Handle handle[PA_CHANNELS_MAX];
  76     LADSPA_Data *input, *output;
  77     size_t block_size;
  78     unsigned long input_port, output_port;
  79     LADSPA_Data *control;
  80
  81     /* This is a dummy buffer. Every port must be connected, but we don't care
  82        about control out ports. We connect them all to this single buffer. */
  83     LADSPA_Data control_out;
  84
  85     pa_memblockq *memblockq;
  86 };
  87
  88 static const char* const valid_modargs[] = {
  89     "sink_name",
  90     "master",
  91     "format",
  92     "channels",
  93     "rate",
  94     "channel_map",
  95     "plugin",
  96     "label",
  97     "control",
  98     NULL
  99 };
 100
 101 /* Called from I/O thread context */
 102 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
 103     struct userdata *u = PA_SINK(o)->userdata;
 104
 105     switch (code) {
 106
 107         case PA_SINK_MESSAGE_GET_LATENCY: {
 108             pa_usec_t usec = 0;
 109
 110             /* Get the latency of the master sink */
 111             if (PA_MSGOBJECT(u->master)->process_msg(PA_MSGOBJECT(u->master), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
 112                 usec = 0;
 113
 114             /* Add the latency internal to our sink input on top */
 115             usec += pa_bytes_to_usec(pa_memblockq_get_length(u->sink_input->thread_info.render_memblockq), &u->master->sample_spec);
 116
 117             *((pa_usec_t*) data) = usec;
 118             return 0;
 119         }
 120     }
 121
 122     return pa_sink_process_msg(o, code, data, offset, chunk);
 123 }
 124
 125 /* Called from main context */
 126 static int sink_set_state(pa_sink *s, pa_sink_state_t state) {
 127     struct userdata *u;
 128
 129     pa_sink_assert_ref(s);
 130     pa_assert_se(u = s->userdata);
 131
 132     if (PA_SINK_IS_LINKED(state) &&
 133         u->sink_input &&
 134         PA_SINK_INPUT_IS_LINKED(pa_sink_input_get_state(u->sink_input)))
 135
 136         pa_sink_input_cork(u->sink_input, state == PA_SINK_SUSPENDED);
 137
 138     return 0;
 139 }
 140
 141 /* Called from I/O thread context */
 142 static void sink_request_rewind(pa_sink *s) {
 143     struct userdata *u;
 144
 145     pa_sink_assert_ref(s);
 146     pa_assert_se(u = s->userdata);
 147
 148     /* Just hand this one over to the master sink */
 149     pa_sink_input_request_rewind(u->sink_input, s->thread_info.rewind_nbytes + pa_memblockq_get_length(u->memblockq), TRUE, FALSE);
 150 }
 151
 152 /* Called from I/O thread context */
 153 static void sink_update_requested_latency(pa_sink *s) {
 154     struct userdata *u;
 155
 156     pa_sink_assert_ref(s);
 157     pa_assert_se(u = s->userdata);
 158
 159     /* Just hand this one over to the master sink */
 160     pa_sink_input_set_requested_latency_within_thread(
 161             u->sink_input,
 162             pa_sink_get_requested_latency_within_thread(s));
 163 }
 164
 165 /* Called from I/O thread context */
 166 static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) {
 167     struct userdata *u;
 168     float *src, *dst;
 169     size_t fs;
 170     unsigned n, c;
 171     pa_memchunk tchunk;
 172
 173     pa_sink_input_assert_ref(i);
 174     pa_assert(chunk);
 175     pa_assert_se(u = i->userdata);
 176
 177     if (!u->sink || !PA_SINK_IS_OPENED(u->sink->thread_info.state))
 178         return -1;
 179
 180     while (pa_memblockq_peek(u->memblockq, &tchunk) < 0) {
 181         pa_memchunk nchunk;
 182
 183         pa_sink_render(u->sink, nbytes, &nchunk);
 184         pa_memblockq_push(u->memblockq, &nchunk);
 185         pa_memblock_unref(nchunk.memblock);
 186     }
 187
 188     tchunk.length = PA_MIN(nbytes, tchunk.length);
 189     pa_assert(tchunk.length > 0);
 190
 191     fs = pa_frame_size(&i->sample_spec);
 192     n = PA_MIN(tchunk.length, u->block_size) / fs;
 193
 194     pa_assert(n > 0);
 195
 196     chunk->index = 0;
 197     chunk->length = n*fs;
 198     chunk->memblock = pa_memblock_new(i->sink->core->mempool, chunk->length);
 199
 200     pa_memblockq_drop(u->memblockq, chunk->length);
 201
 202     src = (float*) ((uint8_t*) pa_memblock_acquire(tchunk.memblock) + tchunk.index);
 203     dst = (float*) pa_memblock_acquire(chunk->memblock);
 204
 205     for (c = 0; c < u->channels; c++) {
 206         pa_sample_clamp(PA_SAMPLE_FLOAT32NE, u->input, sizeof(float), src+c, u->channels*sizeof(float), n);
 207         u->descriptor->run(u->handle[c], n);
 208         pa_sample_clamp(PA_SAMPLE_FLOAT32NE, dst+c, u->channels*sizeof(float), u->output, sizeof(float), n);
 209     }
 210
 211     pa_memblock_release(tchunk.memblock);
 212     pa_memblock_release(chunk->memblock);
 213
 214     pa_memblock_unref(tchunk.memblock);
 215
 216     return 0;
 217 }
 218
 219 /* Called from I/O thread context */
 220 static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) {
 221     struct userdata *u;
 222
 223     pa_sink_input_assert_ref(i);
 224     pa_assert_se(u = i->userdata);
 225     pa_assert(nbytes > 0);
 226
 227     if (!u->sink || !PA_SINK_IS_OPENED(u->sink->thread_info.state))
 228         return;
 229
 230     if (u->sink->thread_info.rewind_nbytes > 0) {
 231         size_t max_rewrite, amount;
 232
 233         max_rewrite = nbytes + pa_memblockq_get_length(u->memblockq);
 234         amount = PA_MIN(u->sink->thread_info.rewind_nbytes, max_rewrite);
 235         u->sink->thread_info.rewind_nbytes = 0;
 236
 237         if (amount > 0) {
 238             unsigned c;
 239
 240             pa_memblockq_seek(u->memblockq, - (int64_t) amount, PA_SEEK_RELATIVE);
 241             pa_sink_process_rewind(u->sink, amount);
 242
 243             pa_log_debug("Resetting plugin");
 244
 245             /* Reset the plugin */
 246             if (u->descriptor->deactivate)
 247                 for (c = 0; c < u->channels; c++)
 248                     u->descriptor->deactivate(u->handle[c]);
 249             if (u->descriptor->activate)
 250                 for (c = 0; c < u->channels; c++)
 251                     u->descriptor->activate(u->handle[c]);
 252         }
 253     }
 254
 255     pa_memblockq_rewind(u->memblockq, nbytes);
 256 }
 257
 258 /* Called from I/O thread context */
 259 static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes) {
 260     struct userdata *u;
 261
 262     pa_sink_input_assert_ref(i);
 263     pa_assert_se(u = i->userdata);
 264
 265     if (!u->sink || !PA_SINK_IS_OPENED(u->sink->thread_info.state))
 266         return;
 267
 268     pa_memblockq_set_maxrewind(u->memblockq, nbytes);
 269     pa_sink_set_max_rewind(u->sink, nbytes);
 270 }
 271
 272 /* Called from I/O thread context */
 273 static void sink_input_detach_cb(pa_sink_input *i) {
 274     struct userdata *u;
 275
 276     pa_sink_input_assert_ref(i);
 277     pa_assert_se(u = i->userdata);
 278
 279     if (!u->sink || !PA_SINK_IS_OPENED(u->sink->thread_info.state))
 280         return;
 281
 282     pa_sink_detach_within_thread(u->sink);
 283     pa_sink_set_asyncmsgq(u->sink, NULL);
 284     pa_sink_set_rtpoll(u->sink, NULL);
 285 }
 286
 287 /* Called from I/O thread context */
 288 static void sink_input_attach_cb(pa_sink_input *i) {
 289     struct userdata *u;
 290
 291     pa_sink_input_assert_ref(i);
 292     pa_assert_se(u = i->userdata);
 293
 294     if (!u->sink || !PA_SINK_IS_OPENED(u->sink->thread_info.state))
 295         return;
 296
 297     pa_sink_set_asyncmsgq(u->sink, i->sink->asyncmsgq);
 298     pa_sink_set_rtpoll(u->sink, i->sink->rtpoll);
 299     pa_sink_attach_within_thread(u->sink);
 300
 301     pa_sink_set_latency_range(u->sink, u->master->min_latency, u->master->max_latency);
 302 }
 303
 304 /* Called from main context */
 305 static void sink_input_kill_cb(pa_sink_input *i) {
 306     struct userdata *u;
 307
 308     pa_sink_input_assert_ref(i);
 309     pa_assert_se(u = i->userdata);
 310
 311     pa_sink_unlink(u->sink);
 312     pa_sink_input_unlink(u->sink_input);
 313
 314     pa_sink_unref(u->sink);
 315     u->sink = NULL;
 316     pa_sink_input_unref(u->sink_input);
 317     u->sink_input = NULL;
 318
 319     pa_module_unload_request(u->module);
 320 }
 321
 322 /* Called from IO thread context */
 323 static void sink_input_state_change_cb(pa_sink_input *i, pa_sink_input_state_t state) {
 324     struct userdata *u;
 325
 326     pa_sink_input_assert_ref(i);
 327     pa_assert_se(u = i->userdata);
 328
 329     /* If we are added for the first time, ask for a rewinding so that
 330      * we are heard right-away. */
 331     if (PA_SINK_INPUT_IS_LINKED(state) &&
 332         i->thread_info.state == PA_SINK_INPUT_INIT) {
 333         pa_log_debug("Requesting rewind due to state change.");
 334         pa_sink_input_request_rewind(i, 0, FALSE, TRUE);
 335     }
 336 }
 337
 338 int pa__init(pa_module*m) {
 339     struct userdata *u;
 340     pa_sample_spec ss;
 341     pa_channel_map map;
 342     pa_modargs *ma;
 343     char *t;
 344     const char *z;
 345     pa_sink *master;
 346     pa_sink_input_new_data sink_input_data;
 347     pa_sink_new_data sink_data;
 348     const char *plugin, *label;
 349     LADSPA_Descriptor_Function descriptor_func;
 350     const char *e, *cdata;
 351     const LADSPA_Descriptor *d;
 352     unsigned long input_port, output_port, p, j, n_control;
 353     unsigned c;
 354     pa_bool_t *use_default = NULL;
 355
 356     pa_assert(m);
 357
 358     pa_assert(sizeof(LADSPA_Data) == sizeof(float));
 359
 360     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 361         pa_log("Failed to parse module arguments.");
 362         goto fail;
 363     }
 364
 365     if (!(master = pa_namereg_get(m->core, pa_modargs_get_value(ma, "master", NULL), PA_NAMEREG_SINK, 1))) {
 366         pa_log("Master sink not found");
 367         goto fail;
 368     }
 369
 370     ss = master->sample_spec;
 371     ss.format = PA_SAMPLE_FLOAT32;
 372     map = master->channel_map;
 373     if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
 374         pa_log("Invalid sample format specification or channel map");
 375         goto fail;
 376     }
 377
 378     if (!(plugin = pa_modargs_get_value(ma, "plugin", NULL))) {
 379         pa_log("Missing LADSPA plugin name");
 380         goto fail;
 381     }
 382
 383     if (!(label = pa_modargs_get_value(ma, "label", NULL))) {
 384         pa_log("Missing LADSPA plugin label");
 385         goto fail;
 386     }
 387
 388     cdata = pa_modargs_get_value(ma, "control", NULL);
 389
 390     u = pa_xnew0(struct userdata, 1);
 391     u->core = m->core;
 392     u->module = m;
 393     m->userdata = u;
 394     u->master = master;
 395     u->sink = NULL;
 396     u->sink_input = NULL;
 397     u->memblockq = pa_memblockq_new(0, MEMBLOCKQ_MAXLENGTH, 0, pa_frame_size(&ss), 1, 1, 0, NULL);
 398
 399     if (!(e = getenv("LADSPA_PATH")))
 400         e = LADSPA_PATH;
 401
 402     /* FIXME: This is not exactly thread safe */
 403     t = pa_xstrdup(lt_dlgetsearchpath());
 404     lt_dlsetsearchpath(e);
 405     m->dl = lt_dlopenext(plugin);
 406     lt_dlsetsearchpath(t);
 407     pa_xfree(t);
 408
 409     if (!m->dl) {
 410         pa_log("Failed to load LADSPA plugin: %s", lt_dlerror());
 411         goto fail;
 412     }
 413
 414     if (!(descriptor_func = (LADSPA_Descriptor_Function) pa_load_sym(m->dl, NULL, "ladspa_descriptor"))) {
 415         pa_log("LADSPA module lacks ladspa_descriptor() symbol.");
 416         goto fail;
 417     }
 418
 419     for (j = 0;; j++) {
 420
 421         if (!(d = descriptor_func(j))) {
 422             pa_log("Failed to find plugin label '%s' in plugin '%s'.", label, plugin);
 423             goto fail;
 424         }
 425
 426         if (strcmp(d->Label, label) == 0)
 427             break;
 428     }
 429
 430     u->descriptor = d;
 431
 432     pa_log_debug("Module: %s", plugin);
 433     pa_log_debug("Label: %s", d->Label);
 434     pa_log_debug("Unique ID: %lu", d->UniqueID);
 435     pa_log_debug("Name: %s", d->Name);
 436     pa_log_debug("Maker: %s", d->Maker);
 437     pa_log_debug("Copyright: %s", d->Copyright);
 438
 439     input_port = output_port = (unsigned long) -1;
 440     n_control = 0;
 441
 442     for (p = 0; p < d->PortCount; p++) {
 443
 444         if (LADSPA_IS_PORT_INPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_AUDIO(d->PortDescriptors[p])) {
 445
 446             if (strcmp(d->PortNames[p], "Input") == 0) {
 447                 pa_assert(input_port == (unsigned long) -1);
 448                 input_port = p;
 449             } else {
 450                 pa_log("Found audio input port on plugin we cannot handle: %s", d->PortNames[p]);
 451                 goto fail;
 452             }
 453
 454         } else if (LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_AUDIO(d->PortDescriptors[p])) {
 455
 456             if (strcmp(d->PortNames[p], "Output") == 0) {
 457                 pa_assert(output_port == (unsigned long) -1);
 458                 output_port = p;
 459             } else {
 460                 pa_log("Found audio output port on plugin we cannot handle: %s", d->PortNames[p]);
 461                 goto fail;
 462             }
 463
 464         } else if (LADSPA_IS_PORT_INPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]))
 465             n_control++;
 466         else {
 467             pa_assert(LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]));
 468             pa_log_debug("Ignored control output port \"%s\".", d->PortNames[p]);
 469         }
 470     }
 471
 472     if ((input_port == (unsigned long) -1) || (output_port == (unsigned long) -1)) {
 473         pa_log("Failed to identify input and output ports. "
 474                "Right now this module can only deal with plugins which provide an 'Input' and an 'Output' audio port. "
 475                "Patches welcome!");
 476         goto fail;
 477     }
 478
 479     u->block_size = pa_frame_align(pa_mempool_block_size_max(m->core->mempool), &ss);
 480
 481     u->input = (LADSPA_Data*) pa_xnew(uint8_t, u->block_size);
 482     if (LADSPA_IS_INPLACE_BROKEN(d->Properties))
 483         u->output = (LADSPA_Data*) pa_xnew(uint8_t, u->block_size);
 484     else
 485         u->output = u->input;
 486
 487     u->channels = ss.channels;
 488
 489     for (c = 0; c < ss.channels; c++) {
 490         if (!(u->handle[c] = d->instantiate(d, ss.rate))) {
 491             pa_log("Failed to instantiate plugin %s with label %s for channel %i", plugin, d->Label, c);
 492             goto fail;
 493         }
 494
 495         d->connect_port(u->handle[c], input_port, u->input);
 496         d->connect_port(u->handle[c], output_port, u->output);
 497     }
 498
 499     if (!cdata && n_control > 0) {
 500         pa_log("This plugin requires specification of %lu control parameters.", n_control);
 501         goto fail;
 502     }
 503
 504     if (n_control > 0) {
 505         const char *state = NULL;
 506         char *k;
 507         unsigned long h;
 508
 509         u->control = pa_xnew(LADSPA_Data, n_control);
 510         use_default = pa_xnew(pa_bool_t, n_control);
 511         p = 0;
 512
 513         while ((k = pa_split(cdata, ",", &state)) && p < n_control) {
 514             float f;
 515
 516             if (*k == 0) {
 517                 use_default[p++] = TRUE;
 518                 pa_xfree(k);
 519                 continue;
 520             }
 521
 522             if (pa_atof(k, &f) < 0) {
 523                 pa_log("Failed to parse control value '%s'", k);
 524                 pa_xfree(k);
 525                 goto fail;
 526             }
 527
 528             pa_xfree(k);
 529
 530             use_default[p] = FALSE;
 531             u->control[p++] = f;
 532         }
 533
 534         /* The previous loop doesn't take the last control value into account
 535            if it is left empty, so we do it here. */
 536         if (*cdata == 0 || cdata[strlen(cdata) - 1] == ',') {
 537             if (p < n_control)
 538                 use_default[p] = TRUE;
 539             p++;
 540         }
 541
 542         if (p > n_control || k) {
 543             pa_log("Too many control values passed, %lu expected.", n_control);
 544             pa_xfree(k);
 545             goto fail;
 546         }
 547
 548         if (p < n_control) {
 549             pa_log("Not enough control values passed, %lu expected, %lu passed.", n_control, p);
 550             goto fail;
 551         }
 552
 553         h = 0;
 554         for (p = 0; p < d->PortCount; p++) {
 555             LADSPA_PortRangeHintDescriptor hint = d->PortRangeHints[p].HintDescriptor;
 556
 557             if (!LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]))
 558                 continue;
 559
 560             if (LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p])) {
 561                 for (c = 0; c < ss.channels; c++)
 562                     d->connect_port(u->handle[c], p, &u->control_out);
 563                 continue;
 564             }
 565
 566             pa_assert(h < n_control);
 567
 568             if (use_default[h]) {
 569                 LADSPA_Data lower, upper;
 570
 571                 if (!LADSPA_IS_HINT_HAS_DEFAULT(hint)) {
 572                     pa_log("Control port value left empty but plugin defines no default.");
 573                     goto fail;
 574                 }
 575
 576                 lower = d->PortRangeHints[p].LowerBound;
 577                 upper = d->PortRangeHints[p].UpperBound;
 578
 579                 if (LADSPA_IS_HINT_SAMPLE_RATE(hint)) {
 580                     lower *= ss.rate;
 581                     upper *= ss.rate;
 582                 }
 583
 584                 switch (hint & LADSPA_HINT_DEFAULT_MASK) {
 585
 586                     case LADSPA_HINT_DEFAULT_MINIMUM:
 587                         u->control[h] = lower;
 588                         break;
 589
 590                     case LADSPA_HINT_DEFAULT_MAXIMUM:
 591                         u->control[h] = upper;
 592                         break;
 593
 594                     case LADSPA_HINT_DEFAULT_LOW:
 595                         if (LADSPA_IS_HINT_LOGARITHMIC(hint))
 596                             u->control[h] = exp(log(lower) * 0.75 + log(upper) * 0.25);
 597                         else
 598                             u->control[h] = lower * 0.75 + upper * 0.25;
 599                         break;
 600
 601                     case LADSPA_HINT_DEFAULT_MIDDLE:
 602                         if (LADSPA_IS_HINT_LOGARITHMIC(hint))
 603                             u->control[h] = exp(log(lower) * 0.5 + log(upper) * 0.5);
 604                         else
 605                             u->control[h] = lower * 0.5 + upper * 0.5;
 606                         break;
 607
 608                     case LADSPA_HINT_DEFAULT_HIGH:
 609                         if (LADSPA_IS_HINT_LOGARITHMIC(hint))
 610                             u->control[h] = exp(log(lower) * 0.25 + log(upper) * 0.75);
 611                         else
 612                             u->control[h] = lower * 0.25 + upper * 0.75;
 613                         break;
 614
 615                     case LADSPA_HINT_DEFAULT_0:
 616                         u->control[h] = 0;
 617                         break;
 618
 619                     case LADSPA_HINT_DEFAULT_1:
 620                         u->control[h] = 1;
 621                         break;
 622
 623                     case LADSPA_HINT_DEFAULT_100:
 624                         u->control[h] = 100;
 625                         break;
 626
 627                     case LADSPA_HINT_DEFAULT_440:
 628                         u->control[h] = 440;
 629                         break;
 630
 631                     default:
 632                         pa_assert_not_reached();
 633                 }
 634             }
 635
 636             if (LADSPA_IS_HINT_INTEGER(hint))
 637                 u->control[h] = roundf(u->control[h]);
 638
 639             pa_log_debug("Binding %f to port %s", u->control[h], d->PortNames[p]);
 640
 641             for (c = 0; c < ss.channels; c++)
 642                 d->connect_port(u->handle[c], p, &u->control[h]);
 643
 644             h++;
 645         }
 646
 647         pa_assert(h == n_control);
 648     }
 649
 650     if (d->activate)
 651         for (c = 0; c < u->channels; c++)
 652             d->activate(u->handle[c]);
 653
 654     /* Create sink */
 655     pa_sink_new_data_init(&sink_data);
 656     sink_data.driver = __FILE__;
 657     sink_data.module = m;
 658     if (!(sink_data.name = pa_xstrdup(pa_modargs_get_value(ma, "sink_name", NULL))))
 659         sink_data.name = pa_sprintf_malloc("%s.ladspa", master->name);
 660     sink_data.namereg_fail = FALSE;
 661     pa_sink_new_data_set_sample_spec(&sink_data, &ss);
 662     pa_sink_new_data_set_channel_map(&sink_data, &map);
 663     z = pa_proplist_gets(master->proplist, PA_PROP_DEVICE_DESCRIPTION);
 664     pa_proplist_setf(sink_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "LADSPA Plugin %s on %s", label, z ? z : master->name);
 665     pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_MASTER_DEVICE, master->name);
 666     pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_CLASS, "filter");
 667     pa_proplist_sets(sink_data.proplist, "device.ladspa.module", plugin);
 668     pa_proplist_sets(sink_data.proplist, "device.ladspa.label", d->Label);
 669     pa_proplist_sets(sink_data.proplist, "device.ladspa.name", d->Name);
 670     pa_proplist_sets(sink_data.proplist, "device.ladspa.maker", d->Maker);
 671     pa_proplist_sets(sink_data.proplist, "device.ladspa.copyright", d->Copyright);
 672     pa_proplist_setf(sink_data.proplist, "device.ladspa.unique_id", "%lu", (unsigned long) d->UniqueID);
 673
 674     u->sink = pa_sink_new(m->core, &sink_data, PA_SINK_LATENCY);
 675     pa_sink_new_data_done(&sink_data);
 676
 677     if (!u->sink) {
 678         pa_log("Failed to create sink.");
 679         goto fail;
 680     }
 681
 682     u->sink->parent.process_msg = sink_process_msg;
 683     u->sink->set_state = sink_set_state;
 684     u->sink->update_requested_latency = sink_update_requested_latency;
 685     u->sink->request_rewind = sink_request_rewind;
 686     u->sink->userdata = u;
 687
 688     pa_sink_set_asyncmsgq(u->sink, master->asyncmsgq);
 689     pa_sink_set_rtpoll(u->sink, master->rtpoll);
 690
 691     /* Create sink input */
 692     pa_sink_input_new_data_init(&sink_input_data);
 693     sink_input_data.driver = __FILE__;
 694     sink_input_data.module = m;
 695     sink_input_data.sink = u->master;
 696     pa_proplist_sets(sink_input_data.proplist, PA_PROP_MEDIA_NAME, "LADSPA Stream");
 697     pa_proplist_sets(sink_input_data.proplist, PA_PROP_MEDIA_ROLE, "filter");
 698     pa_sink_input_new_data_set_sample_spec(&sink_input_data, &ss);
 699     pa_sink_input_new_data_set_channel_map(&sink_input_data, &map);
 700
 701     u->sink_input = pa_sink_input_new(m->core, &sink_input_data, PA_SINK_INPUT_DONT_MOVE);
 702     pa_sink_input_new_data_done(&sink_input_data);
 703
 704     if (!u->sink_input)
 705         goto fail;
 706
 707     u->sink_input->pop = sink_input_pop_cb;
 708     u->sink_input->process_rewind = sink_input_process_rewind_cb;
 709     u->sink_input->update_max_rewind = sink_input_update_max_rewind_cb;
 710     u->sink_input->kill = sink_input_kill_cb;
 711     u->sink_input->attach = sink_input_attach_cb;
 712     u->sink_input->detach = sink_input_detach_cb;
 713     u->sink_input->state_change = sink_input_state_change_cb;
 714     u->sink_input->userdata = u;
 715
 716     pa_sink_put(u->sink);
 717     pa_sink_input_put(u->sink_input);
 718
 719     pa_modargs_free(ma);
 720
 721     pa_xfree(use_default);
 722
 723     return 0;
 724
 725 fail:
 726     if (ma)
 727         pa_modargs_free(ma);
 728
 729     pa_xfree(use_default);
 730
 731     pa__done(m);
 732
 733     return -1;
 734 }
 735
 736 void pa__done(pa_module*m) {
 737     struct userdata *u;
 738     unsigned c;
 739
 740     pa_assert(m);
 741
 742     if (!(u = m->userdata))
 743         return;
 744
 745     if (u->sink) {
 746         pa_sink_unlink(u->sink);
 747         pa_sink_unref(u->sink);
 748     }
 749
 750     if (u->sink_input) {
 751         pa_sink_input_unlink(u->sink_input);
 752         pa_sink_input_unref(u->sink_input);
 753     }
 754
 755     for (c = 0; c < u->channels; c++)
 756         if (u->handle[c]) {
 757             if (u->descriptor->deactivate)
 758                 u->descriptor->deactivate(u->handle[c]);
 759             u->descriptor->cleanup(u->handle[c]);
 760         }
 761
 762     if (u->output != u->input)
 763         pa_xfree(u->output);
 764
 765     if (u->memblockq)
 766         pa_memblockq_free(u->memblockq);
 767
 768     pa_xfree(u->input);
 769
 770     pa_xfree(u->control);
 771
 772     pa_xfree(u);
 773 }