2 This file is part of PulseAudio.
4 Copyright 2004-2008 Lennart Poettering
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 2.1 of the License,
9 or (at your option) any later version.
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.
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
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. */
29 #include <pulse/xmalloc.h>
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>
44 #include "module-ladspa-sink-symdef.h"
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);
52 "sink_name=<name for the sink> "
53 "sink_properties=<properties for the sink> "
54 "master=<name of sink to remap> "
55 "format=<sample format> "
57 "channels=<number of channels> "
58 "channel_map=<channel map> "
59 "plugin=<ladspa plugin name> "
60 "label=<ladspa plugin label> "
61 "control=<comma seperated list of input control values>");
63 #define MEMBLOCKQ_MAXLENGTH (16*1024*1024)
69 pa_sink *sink, *master;
70 pa_sink_input *sink_input;
72 const LADSPA_Descriptor *descriptor;
74 LADSPA_Handle handle[PA_CHANNELS_MAX];
75 LADSPA_Data *input, *output;
77 unsigned long input_port, output_port;
80 /* This is a dummy buffer. Every port must be connected, but we don't care
81 about control out ports. We connect them all to this single buffer. */
82 LADSPA_Data control_out;
84 pa_memblockq *memblockq;
87 static const char* const valid_modargs[] = {
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;
107 case PA_SINK_MESSAGE_GET_LATENCY: {
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)
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);
117 *((pa_usec_t*) data) = usec;
122 return pa_sink_process_msg(o, code, data, offset, chunk);
125 /* Called from main context */
126 static int sink_set_state(pa_sink *s, pa_sink_state_t state) {
129 pa_sink_assert_ref(s);
130 pa_assert_se(u = s->userdata);
132 if (PA_SINK_IS_LINKED(state) &&
134 PA_SINK_INPUT_IS_LINKED(pa_sink_input_get_state(u->sink_input)))
136 pa_sink_input_cork(u->sink_input, state == PA_SINK_SUSPENDED);
141 /* Called from I/O thread context */
142 static void sink_request_rewind(pa_sink *s) {
145 pa_sink_assert_ref(s);
146 pa_assert_se(u = s->userdata);
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, FALSE);
152 /* Called from I/O thread context */
153 static void sink_update_requested_latency(pa_sink *s) {
156 pa_sink_assert_ref(s);
157 pa_assert_se(u = s->userdata);
159 /* Just hand this one over to the master sink */
160 pa_sink_input_set_requested_latency_within_thread(
162 pa_sink_get_requested_latency_within_thread(s));
165 /* Called from I/O thread context */
166 static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) {
173 pa_sink_input_assert_ref(i);
175 pa_assert_se(u = i->userdata);
177 if (!u->sink || !PA_SINK_IS_OPENED(u->sink->thread_info.state))
180 while (pa_memblockq_peek(u->memblockq, &tchunk) < 0) {
183 pa_sink_render(u->sink, nbytes, &nchunk);
184 pa_memblockq_push(u->memblockq, &nchunk);
185 pa_memblock_unref(nchunk.memblock);
188 tchunk.length = PA_MIN(nbytes, tchunk.length);
189 pa_assert(tchunk.length > 0);
191 fs = pa_frame_size(&i->sample_spec);
192 n = (unsigned) (PA_MIN(tchunk.length, u->block_size) / fs);
197 chunk->length = n*fs;
198 chunk->memblock = pa_memblock_new(i->sink->core->mempool, chunk->length);
200 pa_memblockq_drop(u->memblockq, chunk->length);
202 src = (float*) ((uint8_t*) pa_memblock_acquire(tchunk.memblock) + tchunk.index);
203 dst = (float*) pa_memblock_acquire(chunk->memblock);
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);
211 pa_memblock_release(tchunk.memblock);
212 pa_memblock_release(chunk->memblock);
214 pa_memblock_unref(tchunk.memblock);
219 /* Called from I/O thread context */
220 static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) {
224 pa_sink_input_assert_ref(i);
225 pa_assert_se(u = i->userdata);
227 if (!u->sink || !PA_SINK_IS_OPENED(u->sink->thread_info.state))
230 if (u->sink->thread_info.rewind_nbytes > 0) {
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;
240 pa_memblockq_seek(u->memblockq, - (int64_t) amount, PA_SEEK_RELATIVE, TRUE);
242 pa_log_debug("Resetting plugin");
244 /* Reset the plugin */
245 if (u->descriptor->deactivate)
246 for (c = 0; c < u->channels; c++)
247 u->descriptor->deactivate(u->handle[c]);
248 if (u->descriptor->activate)
249 for (c = 0; c < u->channels; c++)
250 u->descriptor->activate(u->handle[c]);
254 pa_sink_process_rewind(u->sink, amount);
255 pa_memblockq_rewind(u->memblockq, nbytes);
258 /* Called from I/O thread context */
259 static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes) {
262 pa_sink_input_assert_ref(i);
263 pa_assert_se(u = i->userdata);
265 if (!u->sink || !PA_SINK_IS_LINKED(u->sink->thread_info.state))
268 pa_memblockq_set_maxrewind(u->memblockq, nbytes);
269 pa_sink_set_max_rewind_within_thread(u->sink, nbytes);
272 /* Called from I/O thread context */
273 static void sink_input_update_max_request_cb(pa_sink_input *i, size_t nbytes) {
276 pa_sink_input_assert_ref(i);
277 pa_assert_se(u = i->userdata);
279 if (!u->sink || !PA_SINK_IS_LINKED(u->sink->thread_info.state))
282 pa_sink_set_max_request_within_thread(u->sink, nbytes);
285 /* Called from I/O thread context */
286 static void sink_input_update_sink_latency_range_cb(pa_sink_input *i) {
289 pa_sink_input_assert_ref(i);
290 pa_assert_se(u = i->userdata);
292 if (!u->sink || !PA_SINK_IS_LINKED(u->sink->thread_info.state))
295 pa_sink_set_latency_range_within_thread(u->sink, i->sink->thread_info.min_latency, i->sink->thread_info.max_latency);
298 /* Called from I/O thread context */
299 static void sink_input_detach_cb(pa_sink_input *i) {
302 pa_sink_input_assert_ref(i);
303 pa_assert_se(u = i->userdata);
305 if (!u->sink || !PA_SINK_IS_LINKED(u->sink->thread_info.state))
308 pa_sink_detach_within_thread(u->sink);
309 pa_sink_set_asyncmsgq(u->sink, NULL);
310 pa_sink_set_rtpoll(u->sink, NULL);
313 /* Called from I/O thread context */
314 static void sink_input_attach_cb(pa_sink_input *i) {
317 pa_sink_input_assert_ref(i);
318 pa_assert_se(u = i->userdata);
320 if (!u->sink || !PA_SINK_IS_LINKED(u->sink->thread_info.state))
323 pa_sink_set_asyncmsgq(u->sink, i->sink->asyncmsgq);
324 pa_sink_set_rtpoll(u->sink, i->sink->rtpoll);
325 pa_sink_attach_within_thread(u->sink);
327 pa_sink_set_latency_range_within_thread(u->sink, u->master->thread_info.min_latency, u->master->thread_info.max_latency);
330 /* Called from main context */
331 static void sink_input_kill_cb(pa_sink_input *i) {
334 pa_sink_input_assert_ref(i);
335 pa_assert_se(u = i->userdata);
337 pa_sink_unlink(u->sink);
338 pa_sink_input_unlink(u->sink_input);
340 pa_sink_unref(u->sink);
342 pa_sink_input_unref(u->sink_input);
343 u->sink_input = NULL;
345 pa_module_unload_request(u->module, TRUE);
348 /* Called from IO thread context */
349 static void sink_input_state_change_cb(pa_sink_input *i, pa_sink_input_state_t state) {
352 pa_sink_input_assert_ref(i);
353 pa_assert_se(u = i->userdata);
355 /* If we are added for the first time, ask for a rewinding so that
356 * we are heard right-away. */
357 if (PA_SINK_INPUT_IS_LINKED(state) &&
358 i->thread_info.state == PA_SINK_INPUT_INIT) {
359 pa_log_debug("Requesting rewind due to state change.");
360 pa_sink_input_request_rewind(i, 0, FALSE, TRUE, TRUE);
364 /* Called from main context */
365 static pa_bool_t sink_input_may_move_to_cb(pa_sink_input *i, pa_sink *dest) {
368 pa_sink_input_assert_ref(i);
369 pa_assert_se(u = i->userdata);
371 return u->sink != dest;
374 int pa__init(pa_module*m) {
382 pa_sink_input_new_data sink_input_data;
383 pa_sink_new_data sink_data;
384 const char *plugin, *label;
385 LADSPA_Descriptor_Function descriptor_func;
386 const char *e, *cdata;
387 const LADSPA_Descriptor *d;
388 unsigned long input_port, output_port, p, j, n_control;
390 pa_bool_t *use_default = NULL;
394 pa_assert(sizeof(LADSPA_Data) == sizeof(float));
396 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
397 pa_log("Failed to parse module arguments.");
401 if (!(master = pa_namereg_get(m->core, pa_modargs_get_value(ma, "master", NULL), PA_NAMEREG_SINK))) {
402 pa_log("Master sink not found");
406 ss = master->sample_spec;
407 ss.format = PA_SAMPLE_FLOAT32;
408 map = master->channel_map;
409 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
410 pa_log("Invalid sample format specification or channel map");
414 if (!(plugin = pa_modargs_get_value(ma, "plugin", NULL))) {
415 pa_log("Missing LADSPA plugin name");
419 if (!(label = pa_modargs_get_value(ma, "label", NULL))) {
420 pa_log("Missing LADSPA plugin label");
424 cdata = pa_modargs_get_value(ma, "control", NULL);
426 u = pa_xnew0(struct userdata, 1);
432 u->sink_input = NULL;
433 u->memblockq = pa_memblockq_new(0, MEMBLOCKQ_MAXLENGTH, 0, pa_frame_size(&ss), 1, 1, 0, NULL);
435 if (!(e = getenv("LADSPA_PATH")))
438 /* FIXME: This is not exactly thread safe */
439 t = pa_xstrdup(lt_dlgetsearchpath());
440 lt_dlsetsearchpath(e);
441 m->dl = lt_dlopenext(plugin);
442 lt_dlsetsearchpath(t);
446 pa_log("Failed to load LADSPA plugin: %s", lt_dlerror());
450 if (!(descriptor_func = (LADSPA_Descriptor_Function) pa_load_sym(m->dl, NULL, "ladspa_descriptor"))) {
451 pa_log("LADSPA module lacks ladspa_descriptor() symbol.");
457 if (!(d = descriptor_func(j))) {
458 pa_log("Failed to find plugin label '%s' in plugin '%s'.", label, plugin);
462 if (strcmp(d->Label, label) == 0)
468 pa_log_debug("Module: %s", plugin);
469 pa_log_debug("Label: %s", d->Label);
470 pa_log_debug("Unique ID: %lu", d->UniqueID);
471 pa_log_debug("Name: %s", d->Name);
472 pa_log_debug("Maker: %s", d->Maker);
473 pa_log_debug("Copyright: %s", d->Copyright);
475 input_port = output_port = (unsigned long) -1;
478 for (p = 0; p < d->PortCount; p++) {
480 if (LADSPA_IS_PORT_INPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_AUDIO(d->PortDescriptors[p])) {
482 if (strcmp(d->PortNames[p], "Input") == 0) {
483 pa_assert(input_port == (unsigned long) -1);
486 pa_log("Found audio input port on plugin we cannot handle: %s", d->PortNames[p]);
490 } else if (LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_AUDIO(d->PortDescriptors[p])) {
492 if (strcmp(d->PortNames[p], "Output") == 0) {
493 pa_assert(output_port == (unsigned long) -1);
496 pa_log("Found audio output port on plugin we cannot handle: %s", d->PortNames[p]);
500 } else if (LADSPA_IS_PORT_INPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]))
503 pa_assert(LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p]) && LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]));
504 pa_log_debug("Ignored control output port \"%s\".", d->PortNames[p]);
508 if ((input_port == (unsigned long) -1) || (output_port == (unsigned long) -1)) {
509 pa_log("Failed to identify input and output ports. "
510 "Right now this module can only deal with plugins which provide an 'Input' and an 'Output' audio port. "
515 u->block_size = pa_frame_align(pa_mempool_block_size_max(m->core->mempool), &ss);
517 u->input = (LADSPA_Data*) pa_xnew(uint8_t, (unsigned) u->block_size);
518 if (LADSPA_IS_INPLACE_BROKEN(d->Properties))
519 u->output = (LADSPA_Data*) pa_xnew(uint8_t, (unsigned) u->block_size);
521 u->output = u->input;
523 u->channels = ss.channels;
525 for (c = 0; c < ss.channels; c++) {
526 if (!(u->handle[c] = d->instantiate(d, ss.rate))) {
527 pa_log("Failed to instantiate plugin %s with label %s for channel %i", plugin, d->Label, c);
531 d->connect_port(u->handle[c], input_port, u->input);
532 d->connect_port(u->handle[c], output_port, u->output);
535 if (!cdata && n_control > 0) {
536 pa_log("This plugin requires specification of %lu control parameters.", n_control);
541 const char *state = NULL;
545 u->control = pa_xnew(LADSPA_Data, (unsigned) n_control);
546 use_default = pa_xnew(pa_bool_t, (unsigned) n_control);
549 while ((k = pa_split(cdata, ",", &state)) && p < n_control) {
553 use_default[p++] = TRUE;
558 if (pa_atod(k, &f) < 0) {
559 pa_log("Failed to parse control value '%s'", k);
566 use_default[p] = FALSE;
567 u->control[p++] = (LADSPA_Data) f;
570 /* The previous loop doesn't take the last control value into account
571 if it is left empty, so we do it here. */
572 if (*cdata == 0 || cdata[strlen(cdata) - 1] == ',') {
574 use_default[p] = TRUE;
578 if (p > n_control || k) {
579 pa_log("Too many control values passed, %lu expected.", n_control);
585 pa_log("Not enough control values passed, %lu expected, %lu passed.", n_control, p);
590 for (p = 0; p < d->PortCount; p++) {
591 LADSPA_PortRangeHintDescriptor hint = d->PortRangeHints[p].HintDescriptor;
593 if (!LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]))
596 if (LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p])) {
597 for (c = 0; c < ss.channels; c++)
598 d->connect_port(u->handle[c], p, &u->control_out);
602 pa_assert(h < n_control);
604 if (use_default[h]) {
605 LADSPA_Data lower, upper;
607 if (!LADSPA_IS_HINT_HAS_DEFAULT(hint)) {
608 pa_log("Control port value left empty but plugin defines no default.");
612 lower = d->PortRangeHints[p].LowerBound;
613 upper = d->PortRangeHints[p].UpperBound;
615 if (LADSPA_IS_HINT_SAMPLE_RATE(hint)) {
616 lower *= (LADSPA_Data) ss.rate;
617 upper *= (LADSPA_Data) ss.rate;
620 switch (hint & LADSPA_HINT_DEFAULT_MASK) {
622 case LADSPA_HINT_DEFAULT_MINIMUM:
623 u->control[h] = lower;
626 case LADSPA_HINT_DEFAULT_MAXIMUM:
627 u->control[h] = upper;
630 case LADSPA_HINT_DEFAULT_LOW:
631 if (LADSPA_IS_HINT_LOGARITHMIC(hint))
632 u->control[h] = (LADSPA_Data) exp(log(lower) * 0.75 + log(upper) * 0.25);
634 u->control[h] = (LADSPA_Data) (lower * 0.75 + upper * 0.25);
637 case LADSPA_HINT_DEFAULT_MIDDLE:
638 if (LADSPA_IS_HINT_LOGARITHMIC(hint))
639 u->control[h] = (LADSPA_Data) exp(log(lower) * 0.5 + log(upper) * 0.5);
641 u->control[h] = (LADSPA_Data) (lower * 0.5 + upper * 0.5);
644 case LADSPA_HINT_DEFAULT_HIGH:
645 if (LADSPA_IS_HINT_LOGARITHMIC(hint))
646 u->control[h] = (LADSPA_Data) exp(log(lower) * 0.25 + log(upper) * 0.75);
648 u->control[h] = (LADSPA_Data) (lower * 0.25 + upper * 0.75);
651 case LADSPA_HINT_DEFAULT_0:
655 case LADSPA_HINT_DEFAULT_1:
659 case LADSPA_HINT_DEFAULT_100:
663 case LADSPA_HINT_DEFAULT_440:
668 pa_assert_not_reached();
672 if (LADSPA_IS_HINT_INTEGER(hint))
673 u->control[h] = roundf(u->control[h]);
675 pa_log_debug("Binding %f to port %s", u->control[h], d->PortNames[p]);
677 for (c = 0; c < ss.channels; c++)
678 d->connect_port(u->handle[c], p, &u->control[h]);
683 pa_assert(h == n_control);
687 for (c = 0; c < u->channels; c++)
688 d->activate(u->handle[c]);
691 pa_sink_new_data_init(&sink_data);
692 sink_data.driver = __FILE__;
693 sink_data.module = m;
694 if (!(sink_data.name = pa_xstrdup(pa_modargs_get_value(ma, "sink_name", NULL))))
695 sink_data.name = pa_sprintf_malloc("%s.ladspa", master->name);
696 sink_data.namereg_fail = FALSE;
697 pa_sink_new_data_set_sample_spec(&sink_data, &ss);
698 pa_sink_new_data_set_channel_map(&sink_data, &map);
699 z = pa_proplist_gets(master->proplist, PA_PROP_DEVICE_DESCRIPTION);
700 pa_proplist_setf(sink_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "LADSPA Plugin %s on %s", label, z ? z : master->name);
701 pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_MASTER_DEVICE, master->name);
702 pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_CLASS, "filter");
703 pa_proplist_sets(sink_data.proplist, "device.ladspa.module", plugin);
704 pa_proplist_sets(sink_data.proplist, "device.ladspa.label", d->Label);
705 pa_proplist_sets(sink_data.proplist, "device.ladspa.name", d->Name);
706 pa_proplist_sets(sink_data.proplist, "device.ladspa.maker", d->Maker);
707 pa_proplist_sets(sink_data.proplist, "device.ladspa.copyright", d->Copyright);
708 pa_proplist_setf(sink_data.proplist, "device.ladspa.unique_id", "%lu", (unsigned long) d->UniqueID);
710 if (pa_modargs_get_proplist(ma, "sink_properties", sink_data.proplist, PA_UPDATE_REPLACE) < 0) {
711 pa_log("Invalid properties");
712 pa_sink_new_data_done(&sink_data);
716 u->sink = pa_sink_new(m->core, &sink_data, PA_SINK_LATENCY|PA_SINK_DYNAMIC_LATENCY);
717 pa_sink_new_data_done(&sink_data);
720 pa_log("Failed to create sink.");
724 u->sink->parent.process_msg = sink_process_msg;
725 u->sink->set_state = sink_set_state;
726 u->sink->update_requested_latency = sink_update_requested_latency;
727 u->sink->request_rewind = sink_request_rewind;
728 u->sink->userdata = u;
730 pa_sink_set_asyncmsgq(u->sink, master->asyncmsgq);
731 pa_sink_set_rtpoll(u->sink, master->rtpoll);
733 /* Create sink input */
734 pa_sink_input_new_data_init(&sink_input_data);
735 sink_input_data.driver = __FILE__;
736 sink_input_data.module = m;
737 sink_input_data.sink = u->master;
738 pa_proplist_sets(sink_input_data.proplist, PA_PROP_MEDIA_NAME, "LADSPA Stream");
739 pa_proplist_sets(sink_input_data.proplist, PA_PROP_MEDIA_ROLE, "filter");
740 pa_sink_input_new_data_set_sample_spec(&sink_input_data, &ss);
741 pa_sink_input_new_data_set_channel_map(&sink_input_data, &map);
743 pa_sink_input_new(&u->sink_input, m->core, &sink_input_data, PA_SINK_INPUT_DONT_MOVE);
744 pa_sink_input_new_data_done(&sink_input_data);
749 u->sink_input->pop = sink_input_pop_cb;
750 u->sink_input->process_rewind = sink_input_process_rewind_cb;
751 u->sink_input->update_max_rewind = sink_input_update_max_rewind_cb;
752 u->sink_input->update_max_request = sink_input_update_max_request_cb;
753 u->sink_input->update_sink_latency_range = sink_input_update_sink_latency_range_cb;
754 u->sink_input->kill = sink_input_kill_cb;
755 u->sink_input->attach = sink_input_attach_cb;
756 u->sink_input->detach = sink_input_detach_cb;
757 u->sink_input->state_change = sink_input_state_change_cb;
758 u->sink_input->may_move_to = sink_input_may_move_to_cb;
759 u->sink_input->userdata = u;
761 pa_sink_put(u->sink);
762 pa_sink_input_put(u->sink_input);
766 pa_xfree(use_default);
774 pa_xfree(use_default);
781 int pa__get_n_used(pa_module *m) {
785 pa_assert_se(u = m->userdata);
787 return pa_sink_linked_by(u->sink);
790 void pa__done(pa_module*m) {
796 if (!(u = m->userdata))
800 pa_sink_unlink(u->sink);
801 pa_sink_unref(u->sink);
805 pa_sink_input_unlink(u->sink_input);
806 pa_sink_input_unref(u->sink_input);
809 for (c = 0; c < u->channels; c++)
811 if (u->descriptor->deactivate)
812 u->descriptor->deactivate(u->handle[c]);
813 u->descriptor->cleanup(u->handle[c]);
816 if (u->output != u->input)
820 pa_memblockq_free(u->memblockq);
824 pa_xfree(u->control);