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

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2008 Lennart Poettering
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   PulseAudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with PulseAudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 /* TODO: Some plugins cause latency, and some even report it by using a control
  23    out port. We don't currently use the latency information. */
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <pulse/xmalloc.h>
  30
  31 #include <pulsecore/core-error.h>
  32 #include <pulsecore/namereg.h>
  33 #include <pulsecore/sink.h>
  34 #include <pulsecore/module.h>
  35 #include <pulsecore/core-util.h>
  36 #include <pulsecore/modargs.h>
  37 #include <pulsecore/log.h>
  38 #include <pulsecore/thread.h>
  39 #include <pulsecore/thread-mq.h>
  40 #include <pulsecore/rtpoll.h>
  41 #include <pulsecore/sample-util.h>
  42 #include <pulsecore/ltdl-helper.h>
  43
  44 #include "module-ladspa-sink-symdef.h"
  45 #include "ladspa.h"
  46
  47 PA_MODULE_AUTHOR("Lennart Poettering");
  48 PA_MODULE_DESCRIPTION("Virtual LADSPA sink");
  49 PA_MODULE_VERSION(PACKAGE_VERSION);
  50 PA_MODULE_LOAD_ONCE(FALSE);
  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 #define MEMBLOCKQ_MAXLENGTH (16*1024*1024)
  63
  64 struct userdata {
  65     pa_core *core;
  66     pa_module *module;
  67
  68     pa_sink *sink, *master;
  69     pa_sink_input *sink_input;
  70
  71     const LADSPA_Descriptor *descriptor;
  72     unsigned channels;
  73     LADSPA_Handle handle[PA_CHANNELS_MAX];
  74     LADSPA_Data *input, *output;
  75     size_t block_size;
  76     unsigned long input_port, output_port;
  77     LADSPA_Data *control;
  78
  79     /* This is a dummy buffer. Every port must be connected, but we don't care
  80        about control out ports. We connect them all to this single buffer. */
  81     LADSPA_Data control_out;
  82
  83     pa_memblockq *memblockq;
  84 };
  85
  86 static const char* const valid_modargs[] = {
  87     "sink_name",
  88     "master",
  89     "format",
  90     "channels",
  91     "rate",
  92     "channel_map",
  93     "plugin",
  94     "label",
  95     "control",
  96     NULL
  97 };
  98
  99 /* Called from I/O thread context */
 100 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
 101     struct userdata *u = PA_SINK(o)->userdata;
 102
 103     switch (code) {
 104
 105         case PA_SINK_MESSAGE_GET_LATENCY: {
 106             pa_usec_t usec = 0;
 107
 108             /* Get the latency of the master sink */
 109             if (PA_MSGOBJECT(u->master)->process_msg(PA_MSGOBJECT(u->master), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0)
 110                 usec = 0;
 111
 112             /* Add the latency internal to our sink input on top */
 113             usec += pa_bytes_to_usec(pa_memblockq_get_length(u->sink_input->thread_info.render_memblockq), &u->master->sample_spec);
 114
 115             *((pa_usec_t*) data) = usec;
 116             return 0;
 117         }
 118     }
 119
 120     return pa_sink_process_msg(o, code, data, offset, chunk);
 121 }
 122
 123 /* Called from main context */
 124 static int sink_set_state(pa_sink *s, pa_sink_state_t state) {
 125     struct userdata *u;
 126
 127     pa_sink_assert_ref(s);
 128     pa_assert_se(u = s->userdata);
 129
 130     if (PA_SINK_IS_LINKED(state) &&
 131         u->sink_input &&
 132         PA_SINK_INPUT_IS_LINKED(pa_sink_input_get_state(u->sink_input)))
 133
 134         pa_sink_input_cork(u->sink_input, state == PA_SINK_SUSPENDED);
 135
 136     return 0;
 137 }
 138
 139 /* Called from I/O thread context */
 140 static void sink_request_rewind(pa_sink *s) {
 141     struct userdata *u;
 142
 143     pa_sink_assert_ref(s);
 144     pa_assert_se(u = s->userdata);
 145
 146     /* Just hand this one over to the master sink */
 147     pa_sink_input_request_rewind(u->sink_input, s->thread_info.rewind_nbytes + pa_memblockq_get_length(u->memblockq), TRUE, FALSE);
 148 }
 149
 150 /* Called from I/O thread context */
 151 static void sink_update_requested_latency(pa_sink *s) {
 152     struct userdata *u;
 153
 154     pa_sink_assert_ref(s);
 155     pa_assert_se(u = s->userdata);
 156
 157     /* Just hand this one over to the master sink */
 158     pa_sink_input_set_requested_latency_within_thread(
 159             u->sink_input,
 160             pa_sink_get_requested_latency_within_thread(s));
 161 }
 162
 163 /* Called from I/O thread context */
 164 static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) {
 165     struct userdata *u;
 166     float *src, *dst;
 167     size_t fs;
 168     unsigned n, c;
 169     pa_memchunk tchunk;
 170
 171     pa_sink_input_assert_ref(i);
 172     pa_assert(chunk);
 173     pa_assert_se(u = i->userdata);
 174
 175     if (!u->sink || !PA_SINK_IS_OPENED(u->sink->thread_info.state))
 176         return -1;
 177
 178     while (pa_memblockq_peek(u->memblockq, &tchunk) < 0) {
 179         pa_memchunk nchunk;
 180
 181         pa_sink_render(u->sink, nbytes, &nchunk);
 182         pa_memblockq_push(u->memblockq, &nchunk);
 183         pa_memblock_unref(nchunk.memblock);
 184     }
 185
 186     tchunk.length = PA_MIN(nbytes, tchunk.length);
 187     pa_assert(tchunk.length > 0);
 188
 189     fs = pa_frame_size(&i->sample_spec);
 190     n = PA_MIN(tchunk.length, u->block_size) / fs;
 191
 192     pa_assert(n > 0);
 193
 194     chunk->index = 0;
 195     chunk->length = n*fs;
 196     chunk->memblock = pa_memblock_new(i->sink->core->mempool, chunk->length);
 197
 198     pa_memblockq_drop(u->memblockq, chunk->length);
 199
 200     src = (float*) ((uint8_t*) pa_memblock_acquire(tchunk.memblock) + tchunk.index);
 201     dst = (float*) pa_memblock_acquire(chunk->memblock);
 202
 203     for (c = 0; c < u->channels; c++) {
 204         pa_sample_clamp(PA_SAMPLE_FLOAT32NE, u->input, sizeof(float), src+c, u->channels*sizeof(float), n);
 205         u->descriptor->run(u->handle[c], n);
 206         pa_sample_clamp(PA_SAMPLE_FLOAT32NE, dst+c, u->channels*sizeof(float), u->output, sizeof(float), n);
 207     }
 208
 209     pa_memblock_release(tchunk.memblock);
 210     pa_memblock_release(chunk->memblock);
 211
 212     pa_memblock_unref(tchunk.memblock);
 213
 214     return 0;
 215 }
 216
 217 /* Called from I/O thread context */
 218 static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) {
 219     struct userdata *u;
 220
 221     pa_sink_input_assert_ref(i);
 222     pa_assert_se(u = i->userdata);
 223     pa_assert(nbytes > 0);
 224
 225     if (!u->sink || !PA_SINK_IS_OPENED(u->sink->thread_info.state))
 226         return;
 227
 228     if (u->sink->thread_info.rewind_nbytes > 0) {
 229         size_t max_rewrite, amount;
 230
 231         max_rewrite = nbytes + pa_memblockq_get_length(u->memblockq);
 232         amount = PA_MIN(u->sink->thread_info.rewind_nbytes, max_rewrite);
 233         u->sink->thread_info.rewind_nbytes = 0;
 234
 235         if (amount > 0) {
 236             unsigned c;
 237
 238             pa_memblockq_seek(u->memblockq, - (int64_t) amount, PA_SEEK_RELATIVE);
 239             pa_sink_process_rewind(u->sink, amount);
 240
 241             pa_log_debug("Resetting plugin");
 242
 243             /* Reset the plugin */
 244             if (u->descriptor->deactivate)
 245                 for (c = 0; c < u->channels; c++)
 246                     u->descriptor->deactivate(u->handle[c]);
 247             if (u->descriptor->activate)
 248                 for (c = 0; c < u->channels; c++)
 249                     u->descriptor->activate(u->handle[c]);
 250         }
 251     }
 252
 253     pa_memblockq_rewind(u->memblockq, nbytes);
 254 }
 255
 256 /* Called from I/O thread context */
 257 static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes) {
 258     struct userdata *u;
 259
 260     pa_sink_input_assert_ref(i);
 261     pa_assert_se(u = i->userdata);
 262
 263     if (!u->sink)
 264         return;
 265
 266     pa_memblockq_set_maxrewind(u->memblockq, nbytes);
 267     pa_sink_set_max_rewind(u->sink, nbytes);
 268 }
 269
 270 /* Called from I/O thread context */
 271 static void sink_input_update_max_request_cb(pa_sink_input *i, size_t nbytes) {
 272     struct userdata *u;
 273
 274     pa_sink_input_assert_ref(i);
 275     pa_assert_se(u = i->userdata);
 276
 277     if (!u->sink)
 278         return;
 279
 280     pa_sink_set_max_request(u->sink, nbytes);
 281 }
 282
 283 /* Called from I/O thread context */
 284 static void sink_input_update_sink_latency_range_cb(pa_sink_input *i) {
 285     struct userdata *u;
 286
 287     pa_sink_input_assert_ref(i);
 288     pa_assert_se(u = i->userdata);
 289
 290     if (!u->sink)
 291         return;
 292
 293     pa_sink_update_latency_range(u->sink, i->sink->thread_info.min_latency, i->sink->thread_info.max_latency);
 294 }
 295
 296 /* Called from I/O thread context */
 297 static void sink_input_detach_cb(pa_sink_input *i) {
 298     struct userdata *u;
 299
 300     pa_sink_input_assert_ref(i);
 301     pa_assert_se(u = i->userdata);
 302
 303     if (!u->sink)
 304         return;
 305
 306     pa_sink_detach_within_thread(u->sink);
 307     pa_sink_set_asyncmsgq(u->sink, NULL);
 308     pa_sink_set_rtpoll(u->sink, NULL);
 309 }
 310
 311 /* Called from I/O thread context */
 312 static void sink_input_attach_cb(pa_sink_input *i) {
 313     struct userdata *u;
 314
 315     pa_sink_input_assert_ref(i);
 316     pa_assert_se(u = i->userdata);
 317
 318     if (!u->sink)
 319         return;
 320
 321     pa_sink_set_asyncmsgq(u->sink, i->sink->asyncmsgq);
 322     pa_sink_set_rtpoll(u->sink, i->sink->rtpoll);
 323     pa_sink_attach_within_thread(u->sink);
 324
 325     pa_sink_set_latency_range(u->sink, u->master->thread_info.min_latency, u->master->thread_info.max_latency);
 326 }
 327
 328 /* Called from main context */
 329 static void sink_input_kill_cb(pa_sink_input *i) {
 330     struct userdata *u;
 331
 332     pa_sink_input_assert_ref(i);
 333     pa_assert_se(u = i->userdata);
 334
 335     pa_sink_unlink(u->sink);
 336     pa_sink_input_unlink(u->sink_input);
 337
 338     pa_sink_unref(u->sink);
 339     u->sink = NULL;
 340     pa_sink_input_unref(u->sink_input);
 341     u->sink_input = NULL;
 342
 343     pa_module_unload_request(u->module);
 344 }
 345
 346 /* Called from IO thread context */
 347 static void sink_input_state_change_cb(pa_sink_input *i, pa_sink_input_state_t state) {
 348     struct userdata *u;
 349
 350     pa_sink_input_assert_ref(i);
 351     pa_assert_se(u = i->userdata);
 352
 353     /* If we are added for the first time, ask for a rewinding so that
 354      * we are heard right-away. */
 355     if (PA_SINK_INPUT_IS_LINKED(state) &&
 356         i->thread_info.state == PA_SINK_INPUT_INIT) {
 357         pa_log_debug("Requesting rewind due to state change.");
 358         pa_sink_input_request_rewind(i, 0, FALSE, TRUE);
 359     }
 360 }
 361
 362 int pa__init(pa_module*m) {
 363     struct userdata *u;
 364     pa_sample_spec ss;
 365     pa_channel_map map;
 366     pa_modargs *ma;
 367     char *t;
 368     const char *z;
 369     pa_sink *master;
 370     pa_sink_input_new_data sink_input_data;
 371     pa_sink_new_data sink_data;
 372     const char *plugin, *label;
 373     LADSPA_Descriptor_Function descriptor_func;
 374     const char *e, *cdata;
 375     const LADSPA_Descriptor *d;
 376     unsigned long input_port, output_port, p, j, n_control;
 377     unsigned c;
 378     pa_bool_t *use_default = NULL;
 379
 380     pa_assert(m);
 381
 382     pa_assert(sizeof(LADSPA_Data) == sizeof(float));
 383
 384     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 385         pa_log("Failed to parse module arguments.");
 386         goto fail;
 387     }
 388
 389     if (!(master = pa_namereg_get(m->core, pa_modargs_get_value(ma, "master", NULL), PA_NAMEREG_SINK, 1))) {
 390         pa_log("Master sink not found");
 391         goto fail;
 392     }
 393
 394     ss = master->sample_spec;
 395     ss.format = PA_SAMPLE_FLOAT32;
 396     map = master->channel_map;
 397     if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
 398         pa_log("Invalid sample format specification or channel map");
 399         goto fail;
 400     }
 401
 402     if (!(plugin = pa_modargs_get_value(ma, "plugin", NULL))) {
 403         pa_log("Missing LADSPA plugin name");
 404         goto fail;
 405     }
 406
 407     if (!(label = pa_modargs_get_value(ma, "label", NULL))) {
 408         pa_log("Missing LADSPA plugin label");
 409         goto fail;
 410     }
 411
 412     cdata = pa_modargs_get_value(ma, "control", NULL);
 413
 414     u = pa_xnew0(struct userdata, 1);
 415     u->core = m->core;
 416     u->module = m;
 417     m->userdata = u;
 418     u->master = master;
 419     u->sink = NULL;
 420     u->sink_input = NULL;
 421     u->memblockq = pa_memblockq_new(0, MEMBLOCKQ_MAXLENGTH, 0, pa_frame_size(&ss), 1, 1, 0, NULL);
 422
 423     if (!(e = getenv("LADSPA_PATH")))
 424         e = LADSPA_PATH;
 425
 426     /* FIXME: This is not exactly thread safe */
 427     t = pa_xstrdup(lt_dlgetsearchpath());
 428     lt_dlsetsearchpath(e);
 429     m->dl = lt_dlopenext(plugin);
 430     lt_dlsetsearchpath(t);
 431     pa_xfree(t);
 432
 433     if (!m->dl) {
 434         pa_log("Failed to load LADSPA plugin: %s", lt_dlerror());
 435         goto fail;
 436     }
 437
 438     if (!(descriptor_func = (LADSPA_Descriptor_Function) pa_load_sym(m->dl, NULL, "ladspa_descriptor"))) {
 439         pa_log("LADSPA module lacks ladspa_descriptor() symbol.");
 440         goto fail;
 441     }
 442
 443     for (j = 0;; j++) {
 444
 445         if (!(d = descriptor_func(j))) {
 446             pa_log("Failed to find plugin label '%s' in plugin '%s'.", label, plugin);
 447             goto fail;
 448         }
 449
 450         if (strcmp(d->Label, label) == 0)
 451             break;
 452     }
 453
 454     u->descriptor = d;
 455
 456     pa_log_debug("Module: %s", plugin);
 457     pa_log_debug("Label: %s", d->Label);
 458     pa_log_debug("Unique ID: %lu", d->UniqueID);
 459     pa_log_debug("Name: %s", d->Name);
 460     pa_log_debug("Maker: %s", d->Maker);
 461     pa_log_debug("Copyright: %s", d->Copyright);
 462
 463     input_port = output_port = (unsigned long) -1;
 464     n_control = 0;
 465
 466     for (p = 0; p < d->PortCount; p++) {
 467
 468         if (LADSPA_IS_PORT_INPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_AUDIO(d->PortDescriptors[p])) {
 469
 470             if (strcmp(d->PortNames[p], "Input") == 0) {
 471                 pa_assert(input_port == (unsigned long) -1);
 472                 input_port = p;
 473             } else {
 474                 pa_log("Found audio input port on plugin we cannot handle: %s", d->PortNames[p]);
 475                 goto fail;
 476             }
 477
 478         } else if (LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_AUDIO(d->PortDescriptors[p])) {
 479
 480             if (strcmp(d->PortNames[p], "Output") == 0) {
 481                 pa_assert(output_port == (unsigned long) -1);
 482                 output_port = p;
 483             } else {
 484                 pa_log("Found audio output port on plugin we cannot handle: %s", d->PortNames[p]);
 485                 goto fail;
 486             }
 487
 488         } else if (LADSPA_IS_PORT_INPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]))
 489             n_control++;
 490         else {
 491             pa_assert(LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]));
 492             pa_log_debug("Ignored control output port \"%s\".", d->PortNames[p]);
 493         }
 494     }
 495
 496     if ((input_port == (unsigned long) -1) || (output_port == (unsigned long) -1)) {
 497         pa_log("Failed to identify input and output ports. "
 498                "Right now this module can only deal with plugins which provide an 'Input' and an 'Output' audio port. "
 499                "Patches welcome!");
 500         goto fail;
 501     }
 502
 503     u->block_size = pa_frame_align(pa_mempool_block_size_max(m->core->mempool), &ss);
 504
 505     u->input = (LADSPA_Data*) pa_xnew(uint8_t, u->block_size);
 506     if (LADSPA_IS_INPLACE_BROKEN(d->Properties))
 507         u->output = (LADSPA_Data*) pa_xnew(uint8_t, u->block_size);
 508     else
 509         u->output = u->input;
 510
 511     u->channels = ss.channels;
 512
 513     for (c = 0; c < ss.channels; c++) {
 514         if (!(u->handle[c] = d->instantiate(d, ss.rate))) {
 515             pa_log("Failed to instantiate plugin %s with label %s for channel %i", plugin, d->Label, c);
 516             goto fail;
 517         }
 518
 519         d->connect_port(u->handle[c], input_port, u->input);
 520         d->connect_port(u->handle[c], output_port, u->output);
 521     }
 522
 523     if (!cdata && n_control > 0) {
 524         pa_log("This plugin requires specification of %lu control parameters.", n_control);
 525         goto fail;
 526     }
 527
 528     if (n_control > 0) {
 529         const char *state = NULL;
 530         char *k;
 531         unsigned long h;
 532
 533         u->control = pa_xnew(LADSPA_Data, n_control);
 534         use_default = pa_xnew(pa_bool_t, n_control);
 535         p = 0;
 536
 537         while ((k = pa_split(cdata, ",", &state)) && p < n_control) {
 538             double f;
 539
 540             if (*k == 0) {
 541                 use_default[p++] = TRUE;
 542                 pa_xfree(k);
 543                 continue;
 544             }
 545
 546             if (pa_atod(k, &f) < 0) {
 547                 pa_log("Failed to parse control value '%s'", k);
 548                 pa_xfree(k);
 549                 goto fail;
 550             }
 551
 552             pa_xfree(k);
 553
 554             use_default[p] = FALSE;
 555             u->control[p++] = f;
 556         }
 557
 558         /* The previous loop doesn't take the last control value into account
 559            if it is left empty, so we do it here. */
 560         if (*cdata == 0 || cdata[strlen(cdata) - 1] == ',') {
 561             if (p < n_control)
 562                 use_default[p] = TRUE;
 563             p++;
 564         }
 565
 566         if (p > n_control || k) {
 567             pa_log("Too many control values passed, %lu expected.", n_control);
 568             pa_xfree(k);
 569             goto fail;
 570         }
 571
 572         if (p < n_control) {
 573             pa_log("Not enough control values passed, %lu expected, %lu passed.", n_control, p);
 574             goto fail;
 575         }
 576
 577         h = 0;
 578         for (p = 0; p < d->PortCount; p++) {
 579             LADSPA_PortRangeHintDescriptor hint = d->PortRangeHints[p].HintDescriptor;
 580
 581             if (!LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]))
 582                 continue;
 583
 584             if (LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p])) {
 585                 for (c = 0; c < ss.channels; c++)
 586                     d->connect_port(u->handle[c], p, &u->control_out);
 587                 continue;
 588             }
 589
 590             pa_assert(h < n_control);
 591
 592             if (use_default[h]) {
 593                 LADSPA_Data lower, upper;
 594
 595                 if (!LADSPA_IS_HINT_HAS_DEFAULT(hint)) {
 596                     pa_log("Control port value left empty but plugin defines no default.");
 597                     goto fail;
 598                 }
 599
 600                 lower = d->PortRangeHints[p].LowerBound;
 601                 upper = d->PortRangeHints[p].UpperBound;
 602
 603                 if (LADSPA_IS_HINT_SAMPLE_RATE(hint)) {
 604                     lower *= ss.rate;
 605                     upper *= ss.rate;
 606                 }
 607
 608                 switch (hint & LADSPA_HINT_DEFAULT_MASK) {
 609
 610                     case LADSPA_HINT_DEFAULT_MINIMUM:
 611                         u->control[h] = lower;
 612                         break;
 613
 614                     case LADSPA_HINT_DEFAULT_MAXIMUM:
 615                         u->control[h] = upper;
 616                         break;
 617
 618                     case LADSPA_HINT_DEFAULT_LOW:
 619                         if (LADSPA_IS_HINT_LOGARITHMIC(hint))
 620                             u->control[h] = exp(log(lower) * 0.75 + log(upper) * 0.25);
 621                         else
 622                             u->control[h] = lower * 0.75 + upper * 0.25;
 623                         break;
 624
 625                     case LADSPA_HINT_DEFAULT_MIDDLE:
 626                         if (LADSPA_IS_HINT_LOGARITHMIC(hint))
 627                             u->control[h] = exp(log(lower) * 0.5 + log(upper) * 0.5);
 628                         else
 629                             u->control[h] = lower * 0.5 + upper * 0.5;
 630                         break;
 631
 632                     case LADSPA_HINT_DEFAULT_HIGH:
 633                         if (LADSPA_IS_HINT_LOGARITHMIC(hint))
 634                             u->control[h] = exp(log(lower) * 0.25 + log(upper) * 0.75);
 635                         else
 636                             u->control[h] = lower * 0.25 + upper * 0.75;
 637                         break;
 638
 639                     case LADSPA_HINT_DEFAULT_0:
 640                         u->control[h] = 0;
 641                         break;
 642
 643                     case LADSPA_HINT_DEFAULT_1:
 644                         u->control[h] = 1;
 645                         break;
 646
 647                     case LADSPA_HINT_DEFAULT_100:
 648                         u->control[h] = 100;
 649                         break;
 650
 651                     case LADSPA_HINT_DEFAULT_440:
 652                         u->control[h] = 440;
 653                         break;
 654
 655                     default:
 656                         pa_assert_not_reached();
 657                 }
 658             }
 659
 660             if (LADSPA_IS_HINT_INTEGER(hint))
 661                 u->control[h] = roundf(u->control[h]);
 662
 663             pa_log_debug("Binding %f to port %s", u->control[h], d->PortNames[p]);
 664
 665             for (c = 0; c < ss.channels; c++)
 666                 d->connect_port(u->handle[c], p, &u->control[h]);
 667
 668             h++;
 669         }
 670
 671         pa_assert(h == n_control);
 672     }
 673
 674     if (d->activate)
 675         for (c = 0; c < u->channels; c++)
 676             d->activate(u->handle[c]);
 677
 678     /* Create sink */
 679     pa_sink_new_data_init(&sink_data);
 680     sink_data.driver = __FILE__;
 681     sink_data.module = m;
 682     if (!(sink_data.name = pa_xstrdup(pa_modargs_get_value(ma, "sink_name", NULL))))
 683         sink_data.name = pa_sprintf_malloc("%s.ladspa", master->name);
 684     sink_data.namereg_fail = FALSE;
 685     pa_sink_new_data_set_sample_spec(&sink_data, &ss);
 686     pa_sink_new_data_set_channel_map(&sink_data, &map);
 687     z = pa_proplist_gets(master->proplist, PA_PROP_DEVICE_DESCRIPTION);
 688     pa_proplist_setf(sink_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "LADSPA Plugin %s on %s", label, z ? z : master->name);
 689     pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_MASTER_DEVICE, master->name);
 690     pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_CLASS, "filter");
 691     pa_proplist_sets(sink_data.proplist, "device.ladspa.module", plugin);
 692     pa_proplist_sets(sink_data.proplist, "device.ladspa.label", d->Label);
 693     pa_proplist_sets(sink_data.proplist, "device.ladspa.name", d->Name);
 694     pa_proplist_sets(sink_data.proplist, "device.ladspa.maker", d->Maker);
 695     pa_proplist_sets(sink_data.proplist, "device.ladspa.copyright", d->Copyright);
 696     pa_proplist_setf(sink_data.proplist, "device.ladspa.unique_id", "%lu", (unsigned long) d->UniqueID);
 697
 698     u->sink = pa_sink_new(m->core, &sink_data, PA_SINK_LATENCY);
 699     pa_sink_new_data_done(&sink_data);
 700
 701     if (!u->sink) {
 702         pa_log("Failed to create sink.");
 703         goto fail;
 704     }
 705
 706     u->sink->parent.process_msg = sink_process_msg;
 707     u->sink->set_state = sink_set_state;
 708     u->sink->update_requested_latency = sink_update_requested_latency;
 709     u->sink->request_rewind = sink_request_rewind;
 710     u->sink->userdata = u;
 711
 712     pa_sink_set_asyncmsgq(u->sink, master->asyncmsgq);
 713     pa_sink_set_rtpoll(u->sink, master->rtpoll);
 714
 715     /* Create sink input */
 716     pa_sink_input_new_data_init(&sink_input_data);
 717     sink_input_data.driver = __FILE__;
 718     sink_input_data.module = m;
 719     sink_input_data.sink = u->master;
 720     pa_proplist_sets(sink_input_data.proplist, PA_PROP_MEDIA_NAME, "LADSPA Stream");
 721     pa_proplist_sets(sink_input_data.proplist, PA_PROP_MEDIA_ROLE, "filter");
 722     pa_sink_input_new_data_set_sample_spec(&sink_input_data, &ss);
 723     pa_sink_input_new_data_set_channel_map(&sink_input_data, &map);
 724
 725     u->sink_input = pa_sink_input_new(m->core, &sink_input_data, PA_SINK_INPUT_DONT_MOVE);
 726     pa_sink_input_new_data_done(&sink_input_data);
 727
 728     if (!u->sink_input)
 729         goto fail;
 730
 731     u->sink_input->pop = sink_input_pop_cb;
 732     u->sink_input->process_rewind = sink_input_process_rewind_cb;
 733     u->sink_input->update_max_rewind = sink_input_update_max_rewind_cb;
 734     u->sink_input->update_max_request = sink_input_update_max_request_cb;
 735     u->sink_input->update_sink_latency_range = sink_input_update_sink_latency_range_cb;
 736     u->sink_input->kill = sink_input_kill_cb;
 737     u->sink_input->attach = sink_input_attach_cb;
 738     u->sink_input->detach = sink_input_detach_cb;
 739     u->sink_input->state_change = sink_input_state_change_cb;
 740     u->sink_input->userdata = u;
 741
 742     pa_sink_put(u->sink);
 743     pa_sink_input_put(u->sink_input);
 744
 745     pa_modargs_free(ma);
 746
 747     pa_xfree(use_default);
 748
 749     return 0;
 750
 751 fail:
 752     if (ma)
 753         pa_modargs_free(ma);
 754
 755     pa_xfree(use_default);
 756
 757     pa__done(m);
 758
 759     return -1;
 760 }
 761
 762 void pa__done(pa_module*m) {
 763     struct userdata *u;
 764     unsigned c;
 765
 766     pa_assert(m);
 767
 768     if (!(u = m->userdata))
 769         return;
 770
 771     if (u->sink) {
 772         pa_sink_unlink(u->sink);
 773         pa_sink_unref(u->sink);
 774     }
 775
 776     if (u->sink_input) {
 777         pa_sink_input_unlink(u->sink_input);
 778         pa_sink_input_unref(u->sink_input);
 779     }
 780
 781     for (c = 0; c < u->channels; c++)
 782         if (u->handle[c]) {
 783             if (u->descriptor->deactivate)
 784                 u->descriptor->deactivate(u->handle[c]);
 785             u->descriptor->cleanup(u->handle[c]);
 786         }
 787
 788     if (u->output != u->input)
 789         pa_xfree(u->output);
 790
 791     if (u->memblockq)
 792         pa_memblockq_free(u->memblockq);
 793
 794     pa_xfree(u->input);
 795
 796     pa_xfree(u->control);
 797
 798     pa_xfree(u);
 799 }