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pulseaudio/src/modules/module-virtual-source.c
Peter Meerwald 95b64804ab core: Move pa_mix() into new file mix.c 
idea is to allow optimized code path (similar to volume code)
and rework/specialize mixing cases to enable runtime performance improvements

no functionality changes in this patch

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
2013-02-15 21:33:07 +02:00

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/***
This file is part of PulseAudio.
Copyright 2010 Intel Corporation
Contributor: Pierre-Louis Bossart <pierre-louis.bossart@intel.com>
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <pulse/xmalloc.h>
#include <pulsecore/i18n.h>
#include <pulsecore/macro.h>
#include <pulsecore/namereg.h>
#include <pulsecore/sink.h>
#include <pulsecore/module.h>
#include <pulsecore/core-util.h>
#include <pulsecore/modargs.h>
#include <pulsecore/log.h>
#include <pulsecore/rtpoll.h>
#include <pulsecore/sample-util.h>
#include <pulsecore/ltdl-helper.h>
#include <pulsecore/mix.h>
#include "module-virtual-source-symdef.h"
PA_MODULE_AUTHOR("Pierre-Louis Bossart");
PA_MODULE_DESCRIPTION("Virtual source");
PA_MODULE_VERSION(PACKAGE_VERSION);
PA_MODULE_LOAD_ONCE(FALSE);
PA_MODULE_USAGE(
_("source_name=<name for the source> "
"source_properties=<properties for the source> "
"master=<name of source to filter> "
"uplink_sink=<name> (optional)"
"format=<sample format> "
"rate=<sample rate> "
"channels=<number of channels> "
"channel_map=<channel map> "
"use_volume_sharing=<yes or no> "
"force_flat_volume=<yes or no> "
));
#define MEMBLOCKQ_MAXLENGTH (16*1024*1024)
#define BLOCK_USEC 1000 /* FIXME */
struct userdata {
pa_module *module;
/* FIXME: Uncomment this and take "autoloaded" as a modarg if this is a filter */
/* pa_bool_t autoloaded; */
pa_source *source;
pa_source_output *source_output;
pa_memblockq *memblockq;
pa_bool_t auto_desc;
unsigned channels;
/* optional fields for uplink sink */
pa_sink *sink;
pa_usec_t block_usec;
pa_memblockq *sink_memblockq;
};
static const char* const valid_modargs[] = {
"source_name",
"source_properties",
"master",
"uplink_sink",
"format",
"rate",
"channels",
"channel_map",
"use_volume_sharing",
"force_flat_volume",
NULL
};
/* Called from I/O thread context */
static int sink_process_msg_cb(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
switch (code) {
case PA_SINK_MESSAGE_GET_LATENCY:
/* there's no real latency here */
*((pa_usec_t*) data) = 0;
return 0;
}
return pa_sink_process_msg(o, code, data, offset, chunk);
}
/* Called from main context */
static int sink_set_state_cb(pa_sink *s, pa_sink_state_t state) {
struct userdata *u;
pa_sink_assert_ref(s);
pa_assert_se(u = s->userdata);
if (!PA_SINK_IS_LINKED(state)) {
return 0;
}
if (state == PA_SINK_RUNNING) {
/* need to wake-up source if it was suspended */
pa_log_debug("Resuming source %s, because its uplink sink became active.", u->source->name);
pa_source_suspend(u->source, FALSE, PA_SUSPEND_ALL);
/* FIXME: if there's no client connected, the source will suspend
and playback will be stuck. You'd want to prevent the source from
sleeping when the uplink sink is active; even if the audio is
discarded at least the app isn't stuck */
} else {
/* nothing to do, if the sink becomes idle or suspended let
module-suspend-idle handle the sources later */
}
return 0;
}
static void sink_update_requested_latency_cb(pa_sink *s) {
struct userdata *u;
pa_sink_assert_ref(s);
pa_assert_se(u = s->userdata);
/* FIXME: there's no latency support */
}
/* Called from I/O thread context */
static void sink_request_rewind_cb(pa_sink *s) {
struct userdata *u;
pa_sink_assert_ref(s);
pa_assert_se(u = s->userdata);
/* Do nothing */
pa_sink_process_rewind(u->sink, 0);
}
/* Called from I/O thread context */
static int source_process_msg_cb(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
struct userdata *u = PA_SOURCE(o)->userdata;
switch (code) {
case PA_SOURCE_MESSAGE_GET_LATENCY:
/* The source is _put() before the source output is, so let's
* make sure we don't access it in that time. Also, the
* source output is first shut down, the source second. */
if (!PA_SOURCE_IS_LINKED(u->source->thread_info.state) ||
!PA_SOURCE_OUTPUT_IS_LINKED(u->source_output->thread_info.state)) {
*((pa_usec_t*) data) = 0;
return 0;
}
*((pa_usec_t*) data) =
/* Get the latency of the master source */
pa_source_get_latency_within_thread(u->source_output->source) +
/* Add the latency internal to our source output on top */
/* FIXME, no idea what I am doing here */
pa_bytes_to_usec(pa_memblockq_get_length(u->source_output->thread_info.delay_memblockq), &u->source_output->source->sample_spec);
return 0;
}
return pa_source_process_msg(o, code, data, offset, chunk);
}
/* Called from main context */
static int source_set_state_cb(pa_source *s, pa_source_state_t state) {
struct userdata *u;
pa_source_assert_ref(s);
pa_assert_se(u = s->userdata);
if (!PA_SOURCE_IS_LINKED(state) ||
!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
return 0;
pa_source_output_cork(u->source_output, state == PA_SOURCE_SUSPENDED);
return 0;
}
/* Called from I/O thread context */
static void source_update_requested_latency_cb(pa_source *s) {
struct userdata *u;
pa_source_assert_ref(s);
pa_assert_se(u = s->userdata);
if (!PA_SOURCE_IS_LINKED(u->source->thread_info.state) ||
!PA_SOURCE_OUTPUT_IS_LINKED(u->source_output->thread_info.state))
return;
/* Just hand this one over to the master source */
pa_source_output_set_requested_latency_within_thread(
u->source_output,
pa_source_get_requested_latency_within_thread(s));
}
/* Called from main context */
static void source_set_volume_cb(pa_source *s) {
struct userdata *u;
pa_source_assert_ref(s);
pa_assert_se(u = s->userdata);
if (!PA_SOURCE_IS_LINKED(pa_source_get_state(s)) ||
!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
return;
pa_source_output_set_volume(u->source_output, &s->real_volume, s->save_volume, TRUE);
}
/* Called from main context */
static void source_set_mute_cb(pa_source *s) {
struct userdata *u;
pa_source_assert_ref(s);
pa_assert_se(u = s->userdata);
if (!PA_SOURCE_IS_LINKED(pa_source_get_state(s)) ||
!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
return;
pa_source_output_set_mute(u->source_output, s->muted, s->save_muted);
}
/* Called from input thread context */
static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
if (!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output))) {
pa_log("push when no link?");
return;
}
/* PUT YOUR CODE HERE TO DO SOMETHING WITH THE SOURCE DATA */
/* if uplink sink exists, pull data from there; simplify by using
same length as chunk provided by source */
if(u->sink && (pa_sink_get_state(u->sink) == PA_SINK_RUNNING)) {
pa_memchunk tchunk;
size_t nbytes = chunk->length;
pa_mix_info streams[2];
pa_memchunk target_chunk;
void *target;
int ch;
/* Hmm, process any rewind request that might be queued up */
pa_sink_process_rewind(u->sink, 0);
/* get data from the sink */
while (pa_memblockq_peek(u->sink_memblockq, &tchunk) < 0) {
pa_memchunk nchunk;
/* make sure we get nbytes from the sink with render_full,
otherwise we cannot mix with the uplink */
pa_sink_render_full(u->sink, nbytes, &nchunk);
pa_memblockq_push(u->sink_memblockq, &nchunk);
pa_memblock_unref(nchunk.memblock);
}
pa_assert(tchunk.length == chunk->length);
/* move the read pointer for sink memblockq */
pa_memblockq_drop(u->sink_memblockq, tchunk.length);
/* allocate target chunk */
/* this could probably be done in-place, but having chunk as both
the input and output creates issues with reference counts */
target_chunk.index = 0;
target_chunk.length = chunk->length;
pa_assert(target_chunk.length == chunk->length);
target_chunk.memblock = pa_memblock_new(o->source->core->mempool,
target_chunk.length);
pa_assert( target_chunk.memblock );
/* get target pointer */
target = pa_memblock_acquire_chunk(&target_chunk);
/* set-up mixing structure
volume was taken care of in sink and source already */
streams[0].chunk = *chunk;
for(ch=0;ch<o->sample_spec.channels;ch++)
streams[0].volume.values[ch] = PA_VOLUME_NORM; /* FIXME */
streams[0].volume.channels = o->sample_spec.channels;
streams[1].chunk = tchunk;
for(ch=0;ch<o->sample_spec.channels;ch++)
streams[1].volume.values[ch] = PA_VOLUME_NORM; /* FIXME */
streams[1].volume.channels = o->sample_spec.channels;
/* do mixing */
pa_mix(streams, /* 2 streams to be mixed */
2,
target, /* put result in target chunk */
chunk->length, /* same length as input */
(const pa_sample_spec *)&o->sample_spec, /* same sample spec for input and output */
NULL, /* no volume information */
FALSE); /* no mute */
pa_memblock_release(target_chunk.memblock);
pa_memblock_unref(tchunk.memblock); /* clean-up */
/* forward the data to the virtual source */
pa_source_post(u->source, &target_chunk);
pa_memblock_unref(target_chunk.memblock); /* clean-up */
} else {
/* forward the data to the virtual source */
pa_source_post(u->source, chunk);
}
}
/* Called from input thread context */
static void source_output_process_rewind_cb(pa_source_output *o, size_t nbytes) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
/* FIXME, no idea what I am doing here */
#if 0
pa_asyncmsgq_post(u->asyncmsgq, PA_MSGOBJECT(u->sink_input), SINK_INPUT_MESSAGE_REWIND, NULL, (int64_t) nbytes, NULL, NULL);
u->send_counter -= (int64_t) nbytes;
#endif
}
/* Called from output thread context */
static int source_output_process_msg_cb(pa_msgobject *obj, int code, void *data, int64_t offset, pa_memchunk *chunk) {
/* FIXME, nothing to do here ? */
return pa_source_output_process_msg(obj, code, data, offset, chunk);
}
/* Called from output thread context */
static void source_output_attach_cb(pa_source_output *o) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
pa_source_set_rtpoll(u->source, o->source->thread_info.rtpoll);
pa_source_set_latency_range_within_thread(u->source, o->source->thread_info.min_latency, o->source->thread_info.max_latency);
pa_source_set_fixed_latency_within_thread(u->source, o->source->thread_info.fixed_latency);
pa_source_set_max_rewind_within_thread(u->source, pa_source_output_get_max_rewind(o));
pa_source_attach_within_thread(u->source);
}
/* Called from output thread context */
static void source_output_detach_cb(pa_source_output *o) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
pa_source_detach_within_thread(u->source);
pa_source_set_rtpoll(u->source, NULL);
}
/* Called from output thread context */
static void source_output_state_change_cb(pa_source_output *o, pa_source_output_state_t state) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
/* FIXME */
#if 0
if (PA_SOURCE_OUTPUT_IS_LINKED(state) && o->thread_info.state == PA_SOURCE_OUTPUT_INIT) {
u->skip = pa_usec_to_bytes(PA_CLIP_SUB(pa_source_get_latency_within_thread(o->source),
u->latency),
&o->sample_spec);
pa_log_info("Skipping %lu bytes", (unsigned long) u->skip);
}
#endif
}
/* Called from main thread */
static void source_output_kill_cb(pa_source_output *o) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert_se(u = o->userdata);
/* The order here matters! We first kill the source output, followed
* by the source. That means the source callbacks must be protected
* against an unconnected source output! */
pa_source_output_unlink(u->source_output);
pa_source_unlink(u->source);
pa_source_output_unref(u->source_output);
u->source_output = NULL;
pa_source_unref(u->source);
u->source = NULL;
pa_module_unload_request(u->module, TRUE);
}
/* Called from main thread */
static pa_bool_t source_output_may_move_to_cb(pa_source_output *o, pa_source *dest) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert_se(u = o->userdata);
/* FIXME */
//return dest != u->source_input->source->monitor_source;
return TRUE;
}
/* Called from main thread */
static void source_output_moving_cb(pa_source_output *o, pa_source *dest) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert_se(u = o->userdata);
if (dest) {
pa_source_set_asyncmsgq(u->source, dest->asyncmsgq);
pa_source_update_flags(u->source, PA_SOURCE_LATENCY|PA_SOURCE_DYNAMIC_LATENCY, dest->flags);
} else
pa_source_set_asyncmsgq(u->source, NULL);
if (u->auto_desc && dest) {
const char *z;
pa_proplist *pl;
pl = pa_proplist_new();
z = pa_proplist_gets(dest->proplist, PA_PROP_DEVICE_DESCRIPTION);
pa_proplist_setf(pl, PA_PROP_DEVICE_DESCRIPTION, "Virtual Source %s on %s",
pa_proplist_gets(u->source->proplist, "device.vsource.name"), z ? z : dest->name);
pa_source_update_proplist(u->source, PA_UPDATE_REPLACE, pl);
pa_proplist_free(pl);
}
}
int pa__init(pa_module*m) {
struct userdata *u;
pa_sample_spec ss;
pa_channel_map map;
pa_modargs *ma;
pa_source *master=NULL;
pa_source_output_new_data source_output_data;
pa_source_new_data source_data;
pa_bool_t use_volume_sharing = TRUE;
pa_bool_t force_flat_volume = FALSE;
/* optional for uplink_sink */
pa_sink_new_data sink_data;
size_t nbytes;
pa_assert(m);
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log("Failed to parse module arguments.");
goto fail;
}
if (!(master = pa_namereg_get(m->core, pa_modargs_get_value(ma, "master", NULL), PA_NAMEREG_SOURCE))) {
pa_log("Master source not found");
goto fail;
}
pa_assert(master);
ss = master->sample_spec;
ss.format = PA_SAMPLE_FLOAT32;
map = master->channel_map;
if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
pa_log("Invalid sample format specification or channel map");
goto fail;
}
if (pa_modargs_get_value_boolean(ma, "use_volume_sharing", &use_volume_sharing) < 0) {
pa_log("use_volume_sharing= expects a boolean argument");
goto fail;
}
if (pa_modargs_get_value_boolean(ma, "force_flat_volume", &force_flat_volume) < 0) {
pa_log("force_flat_volume= expects a boolean argument");
goto fail;
}
if (use_volume_sharing && force_flat_volume) {
pa_log("Flat volume can't be forced when using volume sharing.");
goto fail;
}
u = pa_xnew0(struct userdata, 1);
if (!u) {
pa_log("Failed to alloc userdata");
goto fail;
}
u->module = m;
m->userdata = u;
u->memblockq = pa_memblockq_new("module-virtual-source memblockq", 0, MEMBLOCKQ_MAXLENGTH, 0, &ss, 1, 1, 0, NULL);
if (!u->memblockq) {
pa_log("Failed to create source memblockq.");
goto fail;
}
u->channels = ss.channels;
/* Create source */
pa_source_new_data_init(&source_data);
source_data.driver = __FILE__;
source_data.module = m;
if (!(source_data.name = pa_xstrdup(pa_modargs_get_value(ma, "source_name", NULL))))
source_data.name = pa_sprintf_malloc("%s.vsource", master->name);
pa_source_new_data_set_sample_spec(&source_data, &ss);
pa_source_new_data_set_channel_map(&source_data, &map);
pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_MASTER_DEVICE, master->name);
pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_CLASS, "filter");
pa_proplist_sets(source_data.proplist, "device.vsource.name", source_data.name);
if (pa_modargs_get_proplist(ma, "source_properties", source_data.proplist, PA_UPDATE_REPLACE) < 0) {
pa_log("Invalid properties");
pa_source_new_data_done(&source_data);
goto fail;
}
if ((u->auto_desc = !pa_proplist_contains(source_data.proplist, PA_PROP_DEVICE_DESCRIPTION))) {
const char *z;
z = pa_proplist_gets(master->proplist, PA_PROP_DEVICE_DESCRIPTION);
pa_proplist_setf(source_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Virtual Source %s on %s", source_data.name, z ? z : master->name);
}
u->source = pa_source_new(m->core, &source_data, (master->flags & (PA_SOURCE_LATENCY|PA_SOURCE_DYNAMIC_LATENCY))
| (use_volume_sharing ? PA_SOURCE_SHARE_VOLUME_WITH_MASTER : 0));
pa_source_new_data_done(&source_data);
if (!u->source) {
pa_log("Failed to create source.");
goto fail;
}
u->source->parent.process_msg = source_process_msg_cb;
u->source->set_state = source_set_state_cb;
u->source->update_requested_latency = source_update_requested_latency_cb;
pa_source_set_set_mute_callback(u->source, source_set_mute_cb);
if (!use_volume_sharing) {
pa_source_set_set_volume_callback(u->source, source_set_volume_cb);
pa_source_enable_decibel_volume(u->source, TRUE);
}
/* Normally this flag would be enabled automatically be we can force it. */
if (force_flat_volume)
u->source->flags |= PA_SOURCE_FLAT_VOLUME;
u->source->userdata = u;
pa_source_set_asyncmsgq(u->source, master->asyncmsgq);
/* Create source output */
pa_source_output_new_data_init(&source_output_data);
source_output_data.driver = __FILE__;
source_output_data.module = m;
pa_source_output_new_data_set_source(&source_output_data, master, FALSE);
source_output_data.destination_source = u->source;
/* FIXME
source_output_data.flags = PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND; */
pa_proplist_setf(source_output_data.proplist, PA_PROP_MEDIA_NAME, "Virtual Source Stream of %s", pa_proplist_gets(u->source->proplist, PA_PROP_DEVICE_DESCRIPTION));
pa_proplist_sets(source_output_data.proplist, PA_PROP_MEDIA_ROLE, "filter");
pa_source_output_new_data_set_sample_spec(&source_output_data, &ss);
pa_source_output_new_data_set_channel_map(&source_output_data, &map);
pa_source_output_new(&u->source_output, m->core, &source_output_data);
pa_source_output_new_data_done(&source_output_data);
if (!u->source_output)
goto fail;
u->source_output->parent.process_msg = source_output_process_msg_cb;
u->source_output->push = source_output_push_cb;
u->source_output->process_rewind = source_output_process_rewind_cb;
u->source_output->kill = source_output_kill_cb;
u->source_output->attach = source_output_attach_cb;
u->source_output->detach = source_output_detach_cb;
u->source_output->state_change = source_output_state_change_cb;
u->source_output->may_move_to = source_output_may_move_to_cb;
u->source_output->moving = source_output_moving_cb;
u->source_output->userdata = u;
u->source->output_from_master = u->source_output;
pa_source_put(u->source);
pa_source_output_put(u->source_output);
/* Create optional uplink sink */
pa_sink_new_data_init(&sink_data);
sink_data.driver = __FILE__;
sink_data.module = m;
if ((sink_data.name = pa_xstrdup(pa_modargs_get_value(ma, "uplink_sink", NULL)))) {
pa_sink_new_data_set_sample_spec(&sink_data, &ss);
pa_sink_new_data_set_channel_map(&sink_data, &map);
pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_MASTER_DEVICE, master->name);
pa_proplist_sets(sink_data.proplist, PA_PROP_DEVICE_CLASS, "uplink sink");
pa_proplist_sets(sink_data.proplist, "device.uplink_sink.name", sink_data.name);
if ((u->auto_desc = !pa_proplist_contains(sink_data.proplist, PA_PROP_DEVICE_DESCRIPTION))) {
const char *z;
z = pa_proplist_gets(master->proplist, PA_PROP_DEVICE_DESCRIPTION);
pa_proplist_setf(sink_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Uplink Sink %s on %s", sink_data.name, z ? z : master->name);
}
u->sink_memblockq = pa_memblockq_new("module-virtual-source sink_memblockq", 0, MEMBLOCKQ_MAXLENGTH, 0, &ss, 1, 1, 0, NULL);
if (!u->sink_memblockq) {
pa_sink_new_data_done(&sink_data);
pa_log("Failed to create sink memblockq.");
goto fail;
}
u->sink = pa_sink_new(m->core, &sink_data, 0); /* FIXME, sink has no capabilities */
pa_sink_new_data_done(&sink_data);
if (!u->sink) {
pa_log("Failed to create sink.");
goto fail;
}
u->sink->parent.process_msg = sink_process_msg_cb;
u->sink->update_requested_latency = sink_update_requested_latency_cb;
u->sink->request_rewind = sink_request_rewind_cb;
u->sink->set_state = sink_set_state_cb;
u->sink->userdata = u;
pa_sink_set_asyncmsgq(u->sink, master->asyncmsgq);
/* FIXME: no idea what I am doing here */
u->block_usec = BLOCK_USEC;
nbytes = pa_usec_to_bytes(u->block_usec, &u->sink->sample_spec);
pa_sink_set_max_rewind(u->sink, nbytes);
pa_sink_set_max_request(u->sink, nbytes);
pa_sink_put(u->sink);
} else {
pa_sink_new_data_done(&sink_data);
/* optional uplink sink not enabled */
u->sink = NULL;
}
pa_modargs_free(ma);
return 0;
fail:
if (ma)
pa_modargs_free(ma);
pa__done(m);
return -1;
}
int pa__get_n_used(pa_module *m) {
struct userdata *u;
pa_assert(m);
pa_assert_se(u = m->userdata);
return pa_source_linked_by(u->source);
}
void pa__done(pa_module*m) {
struct userdata *u;
pa_assert(m);
if (!(u = m->userdata))
return;
/* See comments in source_output_kill_cb() above regarding
* destruction order! */
if (u->source_output)
pa_source_output_unlink(u->source_output);
if (u->source)
pa_source_unlink(u->source);
if (u->source_output)
pa_source_output_unref(u->source_output);
if (u->source)
pa_source_unref(u->source);
if (u->sink)
pa_sink_unref(u->sink);
if (u->memblockq)
pa_memblockq_free(u->memblockq);
if (u->sink_memblockq)
pa_memblockq_free(u->sink_memblockq);
pa_xfree(u);
}
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