Adding upstream version 14.2.upstream/14.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1470 insertions, 0 deletions

diff --git a/src/modules/module-ladspa-sink.c b/src/modules/module-ladspa-sink.c
new file mode 100644
index 0000000..5726d08
--- /dev/null
+++ b/src/modules/module-ladspa-sink.c
@@ -0,0 +1,1470 @@
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2004-2008 Lennart Poettering
+
+  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, see <http://www.gnu.org/licenses/>.
+***/
+
+/* TODO: Some plugins cause latency, and some even report it by using a control
+   out port. We don't currently use the latency information. */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <math.h>
+
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/i18n.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>
+
+#ifdef HAVE_DBUS
+#include <pulsecore/protocol-dbus.h>
+#include <pulsecore/dbus-util.h>
+#endif
+
+#include "ladspa.h"
+
+PA_MODULE_AUTHOR("Lennart Poettering");
+PA_MODULE_DESCRIPTION(_("Virtual LADSPA sink"));
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(false);
+PA_MODULE_USAGE(
+    _("sink_name=<name for the sink> "
+      "sink_properties=<properties for the sink> "
+      "sink_input_properties=<properties for the sink input> "
+      "master=<name of sink to filter> "
+      "sink_master=<name of sink to filter> "
+      "format=<sample format> "
+      "rate=<sample rate> "
+      "channels=<number of channels> "
+      "channel_map=<input channel map> "
+      "plugin=<ladspa plugin name> "
+      "label=<ladspa plugin label> "
+      "control=<comma separated list of input control values> "
+      "input_ladspaport_map=<comma separated list of input LADSPA port names> "
+      "output_ladspaport_map=<comma separated list of output LADSPA port names> "
+      "autoloaded=<set if this module is being loaded automatically> "));
+
+#define MEMBLOCKQ_MAXLENGTH (16*1024*1024)
+#define DEFAULT_AUTOLOADED false
+
+/* PLEASE NOTICE: The PortAudio ports and the LADSPA ports are two different concepts.
+They are not related and where possible the names of the LADSPA port variables contains "ladspa" to avoid confusion */
+
+struct userdata {
+    pa_module *module;
+
+    pa_sink *sink;
+    pa_sink_input *sink_input;
+
+    const LADSPA_Descriptor *descriptor;
+    LADSPA_Handle handle[PA_CHANNELS_MAX];
+    unsigned long max_ladspaport_count, input_count, output_count, channels;
+    LADSPA_Data **input, **output;
+    size_t block_size;
+    LADSPA_Data *control;
+    long unsigned n_control;
+
+    /* This is a dummy buffer. Every port must be connected, but we don't care
+    about control out ports. We connect them all to this single buffer. */
+    LADSPA_Data control_out;
+
+    pa_memblockq *memblockq;
+
+    bool *use_default;
+    pa_sample_spec ss;
+
+#ifdef HAVE_DBUS
+    pa_dbus_protocol *dbus_protocol;
+    char *dbus_path;
+#endif
+
+    bool auto_desc;
+    bool autoloaded;
+};
+
+static const char* const valid_modargs[] = {
+    "sink_name",
+    "sink_properties",
+    "sink_input_properties",
+    "master",  /* Will be deprecated. */
+    "sink_master",
+    "format",
+    "rate",
+    "channels",
+    "channel_map",
+    "plugin",
+    "label",
+    "control",
+    "input_ladspaport_map",
+    "output_ladspaport_map",
+    "autoloaded",
+    NULL
+};
+
+/* The PA_SINK_MESSAGE types that extend the predefined messages. */
+enum {
+   LADSPA_SINK_MESSAGE_UPDATE_PARAMETERS = PA_SINK_MESSAGE_MAX
+};
+
+static int write_control_parameters(struct userdata *u, double *control_values, bool *use_default);
+static void connect_control_ports(struct userdata *u);
+
+#ifdef HAVE_DBUS
+
+#define LADSPA_IFACE "org.PulseAudio.Ext.Ladspa1"
+#define LADSPA_ALGORITHM_PARAMETERS "AlgorithmParameters"
+
+/* TODO: add a PropertyChanged signal to tell that the algorithm parameters have been changed */
+
+enum ladspa_handler_index {
+    LADSPA_HANDLER_ALGORITHM_PARAMETERS,
+    LADSPA_HANDLER_MAX
+};
+
+static void get_algorithm_parameters(DBusConnection *conn, DBusMessage *msg, void *_u) {
+    struct userdata *u;
+    DBusMessage *reply = NULL;
+    DBusMessageIter msg_iter, struct_iter;
+    unsigned long i;
+    double *control;
+    dbus_bool_t *use_default;
+
+    pa_assert(conn);
+    pa_assert(msg);
+    pa_assert_se(u = _u);
+
+    pa_assert_se((reply = dbus_message_new_method_return(msg)));
+    dbus_message_iter_init_append(reply, &msg_iter);
+
+    dbus_message_iter_open_container(&msg_iter, DBUS_TYPE_STRUCT, NULL, &struct_iter);
+
+    /* copying because of the D-Bus type mapping */
+    control = pa_xnew(double, u->n_control);
+    use_default = pa_xnew(dbus_bool_t, u->n_control);
+
+    for (i = 0; i < u->n_control; i++) {
+        control[i] = (double) u->control[i];
+        use_default[i] = u->use_default[i];
+    }
+
+    pa_dbus_append_basic_array(&struct_iter, DBUS_TYPE_DOUBLE, control, u->n_control);
+    pa_dbus_append_basic_array(&struct_iter, DBUS_TYPE_BOOLEAN, use_default, u->n_control);
+
+    pa_assert_se(dbus_message_iter_close_container(&msg_iter, &struct_iter));
+
+    pa_assert_se(dbus_connection_send(conn, reply, NULL));
+
+    dbus_message_unref(reply);
+    pa_xfree(control);
+    pa_xfree(use_default);
+}
+
+static void set_algorithm_parameters(DBusConnection *conn, DBusMessage *msg, DBusMessageIter *iter, void *_u) {
+    struct userdata *u;
+    DBusMessageIter array_iter, struct_iter;
+    int n_control = 0, n_use_default;
+    unsigned n_dbus_control, n_dbus_use_default;
+    double *read_values = NULL;
+    dbus_bool_t *read_defaults = NULL;
+    bool *use_defaults = NULL;
+    unsigned long i;
+
+    pa_assert(conn);
+    pa_assert(msg);
+    pa_assert_se(u = _u);
+
+    /* The property we are expecting has signature (adab), meaning that it's a
+       struct of two arrays, the first containing doubles and the second containing
+       booleans. The first array has the algorithm configuration values and the
+       second array has booleans indicating whether the matching algorithm
+       configuration value should use (or try to use) the default value provided by
+       the algorithm module. The PulseAudio D-Bus infrastructure will take care of
+       checking the argument types for us. */
+
+    dbus_message_iter_recurse(iter, &struct_iter);
+
+    dbus_message_iter_recurse(&struct_iter, &array_iter);
+    dbus_message_iter_get_fixed_array(&array_iter, &read_values, &n_control);
+
+    dbus_message_iter_next(&struct_iter);
+    dbus_message_iter_recurse(&struct_iter, &array_iter);
+    dbus_message_iter_get_fixed_array(&array_iter, &read_defaults, &n_use_default);
+
+    n_dbus_control = n_control; /* handle the unsignedness */
+    n_dbus_use_default = n_use_default;
+
+    if (n_dbus_control != u->n_control || n_dbus_use_default != u->n_control) {
+        pa_dbus_send_error(conn, msg, DBUS_ERROR_INVALID_ARGS, "Wrong number of array values (expected %lu)", u->n_control);
+        return;
+    }
+
+    use_defaults = pa_xnew(bool, n_control);
+    for (i = 0; i < u->n_control; i++)
+        use_defaults[i] = read_defaults[i];
+
+    if (write_control_parameters(u, read_values, use_defaults) < 0) {
+        pa_log_warn("Failed writing control parameters");
+        goto error;
+    }
+
+    pa_asyncmsgq_send(u->sink->asyncmsgq, PA_MSGOBJECT(u->sink), LADSPA_SINK_MESSAGE_UPDATE_PARAMETERS, NULL, 0, NULL);
+
+    pa_dbus_send_empty_reply(conn, msg);
+
+    pa_xfree(use_defaults);
+    return;
+
+error:
+    pa_xfree(use_defaults);
+    pa_dbus_send_error(conn, msg, DBUS_ERROR_FAILED, "Internal error");
+}
+
+static pa_dbus_property_handler ladspa_property_handlers[LADSPA_HANDLER_MAX] = {
+    [LADSPA_HANDLER_ALGORITHM_PARAMETERS] = {
+        .property_name = LADSPA_ALGORITHM_PARAMETERS,
+        .type = "(adab)",
+        .get_cb = get_algorithm_parameters,
+        .set_cb = set_algorithm_parameters
+    }
+};
+
+static void ladspa_get_all(DBusConnection *conn, DBusMessage *msg, void *_u) {
+    struct userdata *u;
+    DBusMessage *reply = NULL;
+    DBusMessageIter msg_iter, dict_iter, dict_entry_iter, variant_iter, struct_iter;
+    const char *key = LADSPA_ALGORITHM_PARAMETERS;
+    double *control;
+    dbus_bool_t *use_default;
+    long unsigned i;
+
+    pa_assert(conn);
+    pa_assert(msg);
+    pa_assert_se(u = _u);
+
+    pa_assert_se((reply = dbus_message_new_method_return(msg)));
+
+    /* Currently, on this interface, only a single property is returned. */
+
+    dbus_message_iter_init_append(reply, &msg_iter);
+    pa_assert_se(dbus_message_iter_open_container(&msg_iter, DBUS_TYPE_ARRAY, "{sv}", &dict_iter));
+    pa_assert_se(dbus_message_iter_open_container(&dict_iter, DBUS_TYPE_DICT_ENTRY, NULL, &dict_entry_iter));
+    pa_assert_se(dbus_message_iter_append_basic(&dict_entry_iter, DBUS_TYPE_STRING, &key));
+
+    pa_assert_se(dbus_message_iter_open_container(&dict_entry_iter, DBUS_TYPE_VARIANT, "(adab)", &variant_iter));
+    pa_assert_se(dbus_message_iter_open_container(&variant_iter, DBUS_TYPE_STRUCT, NULL, &struct_iter));
+
+    control = pa_xnew(double, u->n_control);
+    use_default = pa_xnew(dbus_bool_t, u->n_control);
+
+    for (i = 0; i < u->n_control; i++) {
+        control[i] = (double) u->control[i];
+        use_default[i] = u->use_default[i];
+    }
+
+    pa_dbus_append_basic_array(&struct_iter, DBUS_TYPE_DOUBLE, control, u->n_control);
+    pa_dbus_append_basic_array(&struct_iter, DBUS_TYPE_BOOLEAN, use_default, u->n_control);
+
+    pa_assert_se(dbus_message_iter_close_container(&variant_iter, &struct_iter));
+    pa_assert_se(dbus_message_iter_close_container(&dict_entry_iter, &variant_iter));
+    pa_assert_se(dbus_message_iter_close_container(&dict_iter, &dict_entry_iter));
+    pa_assert_se(dbus_message_iter_close_container(&msg_iter, &dict_iter));
+
+    pa_assert_se(dbus_connection_send(conn, reply, NULL));
+    dbus_message_unref(reply);
+    pa_xfree(control);
+    pa_xfree(use_default);
+}
+
+static pa_dbus_interface_info ladspa_info = {
+    .name = LADSPA_IFACE,
+    .method_handlers = NULL,
+    .n_method_handlers = 0,
+    .property_handlers = ladspa_property_handlers,
+    .n_property_handlers = LADSPA_HANDLER_MAX,
+    .get_all_properties_cb = ladspa_get_all,
+    .signals = NULL,
+    .n_signals = 0
+};
+
+static void dbus_init(struct userdata *u) {
+    pa_assert_se(u);
+
+    u->dbus_protocol = pa_dbus_protocol_get(u->sink->core);
+    u->dbus_path = pa_sprintf_malloc("/org/pulseaudio/core1/sink%d", u->sink->index);
+
+    pa_dbus_protocol_add_interface(u->dbus_protocol, u->dbus_path, &ladspa_info, u);
+}
+
+static void dbus_done(struct userdata *u) {
+    pa_assert_se(u);
+
+    if (!u->dbus_protocol) {
+        pa_assert(!u->dbus_path);
+        return;
+    }
+
+    pa_dbus_protocol_remove_interface(u->dbus_protocol, u->dbus_path, ladspa_info.name);
+    pa_xfree(u->dbus_path);
+    pa_dbus_protocol_unref(u->dbus_protocol);
+
+    u->dbus_path = NULL;
+    u->dbus_protocol = NULL;
+}
+
+#endif /* HAVE_DBUS */
+
+/* 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) {
+    struct userdata *u = PA_SINK(o)->userdata;
+
+    switch (code) {
+
+    case PA_SINK_MESSAGE_GET_LATENCY:
+
+        /* The sink is _put() before the sink input is, so let's
+         * make sure we don't access it in that time. Also, the
+         * sink input is first shut down, the sink second. */
+        if (!PA_SINK_IS_LINKED(u->sink->thread_info.state) ||
+            !PA_SINK_INPUT_IS_LINKED(u->sink_input->thread_info.state)) {
+            *((int64_t*) data) = 0;
+            return 0;
+        }
+
+        *((int64_t*) data) =
+
+            /* Get the latency of the master sink */
+            pa_sink_get_latency_within_thread(u->sink_input->sink, true) +
+
+            /* Add the latency internal to our sink input on top */
+            pa_bytes_to_usec(pa_memblockq_get_length(u->sink_input->thread_info.render_memblockq), &u->sink_input->sink->sample_spec);
+
+        return 0;
+
+    case LADSPA_SINK_MESSAGE_UPDATE_PARAMETERS:
+
+        /* rewind the stream to throw away the previously rendered data */
+
+        pa_log_debug("Requesting rewind due to parameter update.");
+        pa_sink_request_rewind(u->sink, -1);
+
+        /* change the sink parameters */
+        connect_control_ports(u);
+
+        return 0;
+    }
+
+    return pa_sink_process_msg(o, code, data, offset, chunk);
+}
+
+/* Called from main context */
+static int sink_set_state_in_main_thread_cb(pa_sink *s, pa_sink_state_t state, pa_suspend_cause_t suspend_cause) {
+    struct userdata *u;
+
+    pa_sink_assert_ref(s);
+    pa_assert_se(u = s->userdata);
+
+    if (!PA_SINK_IS_LINKED(state) ||
+            !PA_SINK_INPUT_IS_LINKED(u->sink_input->state))
+        return 0;
+
+    pa_sink_input_cork(u->sink_input, state == PA_SINK_SUSPENDED);
+    return 0;
+}
+
+/* Called from the IO thread. */
+static int sink_set_state_in_io_thread_cb(pa_sink *s, pa_sink_state_t new_state, pa_suspend_cause_t new_suspend_cause) {
+    struct userdata *u;
+
+    pa_assert(s);
+    pa_assert_se(u = s->userdata);
+
+    /* When set to running or idle for the first time, request a rewind
+     * of the master sink to make sure we are heard immediately */
+    if (PA_SINK_IS_OPENED(new_state) && s->thread_info.state == PA_SINK_INIT) {
+        pa_log_debug("Requesting rewind due to state change.");
+        pa_sink_input_request_rewind(u->sink_input, 0, false, true, true);
+    }
+
+    return 0;
+}
+
+/* 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);
+
+    if (!PA_SINK_IS_LINKED(u->sink->thread_info.state) ||
+            !PA_SINK_INPUT_IS_LINKED(u->sink_input->thread_info.state))
+        return;
+
+    /* Just hand this one over to the master sink */
+    pa_sink_input_request_rewind(u->sink_input,
+                                 s->thread_info.rewind_nbytes +
+                                 pa_memblockq_get_length(u->memblockq), true, false, false);
+}
+
+/* Called from I/O thread context */
+static void sink_update_requested_latency_cb(pa_sink *s) {
+    struct userdata *u;
+
+    pa_sink_assert_ref(s);
+    pa_assert_se(u = s->userdata);
+
+    if (!PA_SINK_IS_LINKED(u->sink->thread_info.state) ||
+            !PA_SINK_INPUT_IS_LINKED(u->sink_input->thread_info.state))
+        return;
+
+    /* Just hand this one over to the master sink */
+    pa_sink_input_set_requested_latency_within_thread(
+        u->sink_input,
+        pa_sink_get_requested_latency_within_thread(s));
+}
+
+/* Called from main context */
+static void sink_set_mute_cb(pa_sink *s) {
+    struct userdata *u;
+
+    pa_sink_assert_ref(s);
+    pa_assert_se(u = s->userdata);
+
+    if (!PA_SINK_IS_LINKED(s->state) ||
+            !PA_SINK_INPUT_IS_LINKED(u->sink_input->state))
+        return;
+
+    pa_sink_input_set_mute(u->sink_input, s->muted, s->save_muted);
+}
+
+/* Called from I/O thread context */
+static int sink_input_pop_cb(pa_sink_input *i, size_t nbytes, pa_memchunk *chunk) {
+    struct userdata *u;
+    float *src, *dst;
+    size_t fs;
+    unsigned n, h, c;
+    pa_memchunk tchunk;
+
+    pa_sink_input_assert_ref(i);
+    pa_assert(chunk);
+    pa_assert_se(u = i->userdata);
+
+    if (!PA_SINK_IS_LINKED(u->sink->thread_info.state))
+        return -1;
+
+    /* Hmm, process any rewind request that might be queued up */
+    pa_sink_process_rewind(u->sink, 0);
+
+    while (pa_memblockq_peek(u->memblockq, &tchunk) < 0) {
+        pa_memchunk nchunk;
+
+        pa_sink_render(u->sink, nbytes, &nchunk);
+        pa_memblockq_push(u->memblockq, &nchunk);
+        pa_memblock_unref(nchunk.memblock);
+    }
+
+    tchunk.length = PA_MIN(nbytes, tchunk.length);
+    pa_assert(tchunk.length > 0);
+
+    fs = pa_frame_size(&i->sample_spec);
+    n = (unsigned) (PA_MIN(tchunk.length, u->block_size) / fs);
+
+    pa_assert(n > 0);
+
+    chunk->index = 0;
+    chunk->length = n*fs;
+    chunk->memblock = pa_memblock_new(i->sink->core->mempool, chunk->length);
+
+    pa_memblockq_drop(u->memblockq, chunk->length);
+
+    src = pa_memblock_acquire_chunk(&tchunk);
+    dst = pa_memblock_acquire(chunk->memblock);
+
+    for (h = 0; h < (u->channels / u->max_ladspaport_count); h++) {
+        for (c = 0; c < u->input_count; c++)
+            pa_sample_clamp(PA_SAMPLE_FLOAT32NE, u->input[c], sizeof(float), src+ h*u->max_ladspaport_count + c, u->channels*sizeof(float), n);
+        u->descriptor->run(u->handle[h], n);
+        for (c = 0; c < u->output_count; c++)
+            pa_sample_clamp(PA_SAMPLE_FLOAT32NE, dst + h*u->max_ladspaport_count + c, u->channels*sizeof(float), u->output[c], sizeof(float), n);
+    }
+
+    pa_memblock_release(tchunk.memblock);
+    pa_memblock_release(chunk->memblock);
+
+    pa_memblock_unref(tchunk.memblock);
+
+    return 0;
+}
+
+/* Called from I/O thread context */
+static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) {
+    struct userdata *u;
+    size_t amount = 0;
+
+    pa_sink_input_assert_ref(i);
+    pa_assert_se(u = i->userdata);
+
+    /* If the sink is not yet linked, there is nothing to rewind */
+    if (!PA_SINK_IS_LINKED(u->sink->thread_info.state))
+        return;
+
+    if (u->sink->thread_info.rewind_nbytes > 0) {
+        size_t max_rewrite;
+
+        max_rewrite = nbytes + pa_memblockq_get_length(u->memblockq);
+        amount = PA_MIN(u->sink->thread_info.rewind_nbytes, max_rewrite);
+        u->sink->thread_info.rewind_nbytes = 0;
+
+        if (amount > 0) {
+            unsigned c;
+
+            pa_memblockq_seek(u->memblockq, - (int64_t) amount, PA_SEEK_RELATIVE, true);
+
+            pa_log_debug("Resetting plugin");
+
+            /* Reset the plugin */
+            if (u->descriptor->deactivate)
+                for (c = 0; c < (u->channels / u->max_ladspaport_count); c++)
+                    u->descriptor->deactivate(u->handle[c]);
+            if (u->descriptor->activate)
+                for (c = 0; c < (u->channels / u->max_ladspaport_count); c++)
+                    u->descriptor->activate(u->handle[c]);
+        }
+    }
+
+    pa_sink_process_rewind(u->sink, amount);
+    pa_memblockq_rewind(u->memblockq, nbytes);
+}
+
+/* Called from I/O thread context */
+static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes) {
+    struct userdata *u;
+
+    pa_sink_input_assert_ref(i);
+    pa_assert_se(u = i->userdata);
+
+    /* FIXME: Too small max_rewind:
+     * https://bugs.freedesktop.org/show_bug.cgi?id=53709 */
+    pa_memblockq_set_maxrewind(u->memblockq, nbytes);
+    pa_sink_set_max_rewind_within_thread(u->sink, nbytes);
+}
+
+/* Called from I/O thread context */
+static void sink_input_update_max_request_cb(pa_sink_input *i, size_t nbytes) {
+    struct userdata *u;
+
+    pa_sink_input_assert_ref(i);
+    pa_assert_se(u = i->userdata);
+
+    pa_sink_set_max_request_within_thread(u->sink, nbytes);
+}
+
+/* Called from I/O thread context */
+static void sink_input_update_sink_latency_range_cb(pa_sink_input *i) {
+    struct userdata *u;
+
+    pa_sink_input_assert_ref(i);
+    pa_assert_se(u = i->userdata);
+
+    pa_sink_set_latency_range_within_thread(u->sink, i->sink->thread_info.min_latency, i->sink->thread_info.max_latency);
+}
+
+/* Called from I/O thread context */
+static void sink_input_update_sink_fixed_latency_cb(pa_sink_input *i) {
+    struct userdata *u;
+
+    pa_sink_input_assert_ref(i);
+    pa_assert_se(u = i->userdata);
+
+    pa_sink_set_fixed_latency_within_thread(u->sink, i->sink->thread_info.fixed_latency);
+}
+
+/* Called from I/O thread context */
+static void sink_input_detach_cb(pa_sink_input *i) {
+    struct userdata *u;
+
+    pa_sink_input_assert_ref(i);
+    pa_assert_se(u = i->userdata);
+
+    if (PA_SINK_IS_LINKED(u->sink->thread_info.state))
+        pa_sink_detach_within_thread(u->sink);
+
+    pa_sink_set_rtpoll(u->sink, NULL);
+}
+
+/* Called from I/O thread context */
+static void sink_input_attach_cb(pa_sink_input *i) {
+    struct userdata *u;
+
+    pa_sink_input_assert_ref(i);
+    pa_assert_se(u = i->userdata);
+
+    pa_sink_set_rtpoll(u->sink, i->sink->thread_info.rtpoll);
+    pa_sink_set_latency_range_within_thread(u->sink, i->sink->thread_info.min_latency, i->sink->thread_info.max_latency);
+    pa_sink_set_fixed_latency_within_thread(u->sink, i->sink->thread_info.fixed_latency);
+    pa_sink_set_max_request_within_thread(u->sink, pa_sink_input_get_max_request(i));
+
+    /* FIXME: Too small max_rewind:
+     * https://bugs.freedesktop.org/show_bug.cgi?id=53709 */
+    pa_sink_set_max_rewind_within_thread(u->sink, pa_sink_input_get_max_rewind(i));
+
+    if (PA_SINK_IS_LINKED(u->sink->thread_info.state))
+        pa_sink_attach_within_thread(u->sink);
+}
+
+/* Called from main context */
+static void sink_input_kill_cb(pa_sink_input *i) {
+    struct userdata *u;
+
+    pa_sink_input_assert_ref(i);
+    pa_assert_se(u = i->userdata);
+
+    /* The order here matters! We first kill the sink so that streams
+     * can properly be moved away while the sink input is still connected
+     * to the master. */
+    pa_sink_input_cork(u->sink_input, true);
+    pa_sink_unlink(u->sink);
+    pa_sink_input_unlink(u->sink_input);
+
+    pa_sink_input_unref(u->sink_input);
+    u->sink_input = NULL;
+
+    pa_sink_unref(u->sink);
+    u->sink = NULL;
+
+    pa_module_unload_request(u->module, true);
+}
+
+/* Called from main context */
+static bool sink_input_may_move_to_cb(pa_sink_input *i, pa_sink *dest) {
+    struct userdata *u;
+
+    pa_sink_input_assert_ref(i);
+    pa_assert_se(u = i->userdata);
+
+    if (u->autoloaded)
+        return false;
+
+    return u->sink != dest;
+}
+
+/* Called from main context */
+static void sink_input_moving_cb(pa_sink_input *i, pa_sink *dest) {
+    struct userdata *u;
+
+    pa_sink_input_assert_ref(i);
+    pa_assert_se(u = i->userdata);
+
+    if (dest) {
+        pa_sink_set_asyncmsgq(u->sink, dest->asyncmsgq);
+        pa_sink_update_flags(u->sink, PA_SINK_LATENCY|PA_SINK_DYNAMIC_LATENCY, dest->flags);
+    } else
+        pa_sink_set_asyncmsgq(u->sink, 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, "LADSPA Plugin %s on %s",
+                         pa_proplist_gets(u->sink->proplist, "device.ladspa.name"), z ? z : dest->name);
+
+        pa_sink_update_proplist(u->sink, PA_UPDATE_REPLACE, pl);
+        pa_proplist_free(pl);
+    }
+}
+
+/* Called from main context */
+static void sink_input_mute_changed_cb(pa_sink_input *i) {
+    struct userdata *u;
+
+    pa_sink_input_assert_ref(i);
+    pa_assert_se(u = i->userdata);
+
+    pa_sink_mute_changed(u->sink, i->muted);
+}
+
+/* Called from main context */
+static void sink_input_suspend_cb(pa_sink_input *i, pa_sink_state_t old_state, pa_suspend_cause_t old_suspend_cause) {
+    struct userdata *u;
+
+    pa_sink_input_assert_ref(i);
+    pa_assert_se(u = i->userdata);
+
+    if (!PA_SINK_IS_LINKED(u->sink->state))
+        return;
+
+    if (i->sink->state != PA_SINK_SUSPENDED || i->sink->suspend_cause == PA_SUSPEND_IDLE)
+        pa_sink_suspend(u->sink, false, PA_SUSPEND_UNAVAILABLE);
+    else
+        pa_sink_suspend(u->sink, true, PA_SUSPEND_UNAVAILABLE);
+}
+
+static int parse_control_parameters(struct userdata *u, const char *cdata, double *read_values, bool *use_default) {
+    unsigned long p = 0;
+    const char *state = NULL;
+    char *k;
+
+    pa_assert(read_values);
+    pa_assert(use_default);
+    pa_assert(u);
+
+    pa_log_debug("Trying to read %lu control values", u->n_control);
+
+    if (!cdata || u->n_control == 0)
+        return -1;
+
+    pa_log_debug("cdata: '%s'", cdata);
+
+    while ((k = pa_split(cdata, ",", &state)) && p < u->n_control) {
+        double f;
+
+        if (*k == 0) {
+            pa_log_debug("Read empty config value (p=%lu)", p);
+            use_default[p++] = true;
+            pa_xfree(k);
+            continue;
+        }
+
+        if (pa_atod(k, &f) < 0) {
+            pa_log_debug("Failed to parse control value '%s' (p=%lu)", k, p);
+            pa_xfree(k);
+            goto fail;
+        }
+
+        pa_xfree(k);
+
+        pa_log_debug("Read config value %f (p=%lu)", f, p);
+
+        use_default[p] = false;
+        read_values[p++] = f;
+    }
+
+    /* The previous loop doesn't take the last control value into account
+       if it is left empty, so we do it here. */
+    if (*cdata == 0 || cdata[strlen(cdata) - 1] == ',') {
+        if (p < u->n_control)
+            use_default[p] = true;
+        p++;
+    }
+
+    if (p > u->n_control || k) {
+        pa_log("Too many control values passed, %lu expected.", u->n_control);
+        pa_xfree(k);
+        goto fail;
+    }
+
+    if (p < u->n_control) {
+        pa_log("Not enough control values passed, %lu expected, %lu passed.", u->n_control, p);
+        goto fail;
+    }
+
+    return 0;
+
+fail:
+    return -1;
+}
+
+static void connect_control_ports(struct userdata *u) {
+    unsigned long p = 0, h = 0, c;
+    const LADSPA_Descriptor *d;
+
+    pa_assert(u);
+    pa_assert_se(d = u->descriptor);
+
+    for (p = 0; p < d->PortCount; p++) {
+        if (!LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]))
+            continue;
+
+        if (LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p])) {
+            for (c = 0; c < (u->channels / u->max_ladspaport_count); c++)
+                d->connect_port(u->handle[c], p, &u->control_out);
+            continue;
+        }
+
+        /* input control port */
+
+        pa_log_debug("Binding %f to port %s", u->control[h], d->PortNames[p]);
+
+        for (c = 0; c < (u->channels / u->max_ladspaport_count); c++)
+            d->connect_port(u->handle[c], p, &u->control[h]);
+
+        h++;
+    }
+}
+
+static int validate_control_parameters(struct userdata *u, double *control_values, bool *use_default) {
+    unsigned long p = 0, h = 0;
+    const LADSPA_Descriptor *d;
+    pa_sample_spec ss;
+
+    pa_assert(control_values);
+    pa_assert(use_default);
+    pa_assert(u);
+    pa_assert_se(d = u->descriptor);
+
+    ss = u->ss;
+
+    /* Iterate over all ports. Check for every control port that 1) it
+     * supports default values if a default value is provided and 2) the
+     * provided value is within the limits specified in the plugin. */
+
+    for (p = 0; p < d->PortCount; p++) {
+        LADSPA_PortRangeHintDescriptor hint = d->PortRangeHints[p].HintDescriptor;
+
+        if (!LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]))
+            continue;
+
+        if (LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p]))
+            continue;
+
+        if (use_default[h]) {
+            /* User wants to use default value. Check if the plugin
+             * provides it. */
+            if (!LADSPA_IS_HINT_HAS_DEFAULT(hint)) {
+                pa_log_warn("Control port value left empty but plugin defines no default.");
+                return -1;
+            }
+        }
+        else {
+            /* Check if the user-provided value is within the bounds. */
+            LADSPA_Data lower = d->PortRangeHints[p].LowerBound;
+            LADSPA_Data upper = d->PortRangeHints[p].UpperBound;
+
+            if (LADSPA_IS_HINT_SAMPLE_RATE(hint)) {
+                upper *= (LADSPA_Data) ss.rate;
+                lower *= (LADSPA_Data) ss.rate;
+            }
+
+            if (LADSPA_IS_HINT_BOUNDED_ABOVE(hint)) {
+                if (control_values[h] > upper) {
+                    pa_log_warn("Control value %lu over upper bound: %f (upper bound: %f)", h, control_values[h], upper);
+                    return -1;
+                }
+            }
+            if (LADSPA_IS_HINT_BOUNDED_BELOW(hint)) {
+                if (control_values[h] < lower) {
+                    pa_log_warn("Control value %lu below lower bound: %f (lower bound: %f)", h, control_values[h], lower);
+                    return -1;
+                }
+            }
+        }
+
+        h++;
+    }
+
+    return 0;
+}
+
+static int write_control_parameters(struct userdata *u, double *control_values, bool *use_default) {
+    unsigned long p = 0, h = 0, c;
+    const LADSPA_Descriptor *d;
+    pa_sample_spec ss;
+
+    pa_assert(control_values);
+    pa_assert(use_default);
+    pa_assert(u);
+    pa_assert_se(d = u->descriptor);
+
+    ss = u->ss;
+
+    if (validate_control_parameters(u, control_values, use_default) < 0)
+        return -1;
+
+    /* p iterates over all ports, h is the control port iterator */
+
+    for (p = 0; p < d->PortCount; p++) {
+        LADSPA_PortRangeHintDescriptor hint = d->PortRangeHints[p].HintDescriptor;
+
+        if (!LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]))
+            continue;
+
+        if (LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p])) {
+            for (c = 0; c < (u->channels / u->max_ladspaport_count); c++)
+                d->connect_port(u->handle[c], p, &u->control_out);
+            continue;
+        }
+
+        if (use_default[h]) {
+
+            LADSPA_Data lower, upper;
+
+            lower = d->PortRangeHints[p].LowerBound;
+            upper = d->PortRangeHints[p].UpperBound;
+
+            if (LADSPA_IS_HINT_SAMPLE_RATE(hint)) {
+                lower *= (LADSPA_Data) ss.rate;
+                upper *= (LADSPA_Data) ss.rate;
+            }
+
+            switch (hint & LADSPA_HINT_DEFAULT_MASK) {
+
+            case LADSPA_HINT_DEFAULT_MINIMUM:
+                u->control[h] = lower;
+                break;
+
+            case LADSPA_HINT_DEFAULT_MAXIMUM:
+                u->control[h] = upper;
+                break;
+
+            case LADSPA_HINT_DEFAULT_LOW:
+                if (LADSPA_IS_HINT_LOGARITHMIC(hint))
+                    u->control[h] = (LADSPA_Data) exp(log(lower) * 0.75 + log(upper) * 0.25);
+                else
+                    u->control[h] = (LADSPA_Data) (lower * 0.75 + upper * 0.25);
+                break;
+
+            case LADSPA_HINT_DEFAULT_MIDDLE:
+                if (LADSPA_IS_HINT_LOGARITHMIC(hint))
+                    u->control[h] = (LADSPA_Data) exp(log(lower) * 0.5 + log(upper) * 0.5);
+                else
+                    u->control[h] = (LADSPA_Data) (lower * 0.5 + upper * 0.5);
+                break;
+
+            case LADSPA_HINT_DEFAULT_HIGH:
+                if (LADSPA_IS_HINT_LOGARITHMIC(hint))
+                    u->control[h] = (LADSPA_Data) exp(log(lower) * 0.25 + log(upper) * 0.75);
+                else
+                    u->control[h] = (LADSPA_Data) (lower * 0.25 + upper * 0.75);
+                break;
+
+            case LADSPA_HINT_DEFAULT_0:
+                u->control[h] = 0;
+                break;
+
+            case LADSPA_HINT_DEFAULT_1:
+                u->control[h] = 1;
+                break;
+
+            case LADSPA_HINT_DEFAULT_100:
+                u->control[h] = 100;
+                break;
+
+            case LADSPA_HINT_DEFAULT_440:
+                u->control[h] = 440;
+                break;
+
+            default:
+                pa_assert_not_reached();
+            }
+        }
+        else {
+            if (LADSPA_IS_HINT_INTEGER(hint)) {
+                u->control[h] = roundf(control_values[h]);
+            }
+            else {
+                u->control[h] = control_values[h];
+            }
+        }
+
+        h++;
+    }
+
+    /* set the use_default array to the user data */
+    memcpy(u->use_default, use_default, u->n_control * sizeof(u->use_default[0]));
+
+    return 0;
+}
+
+int pa__init(pa_module*m) {
+    struct userdata *u;
+    pa_sample_spec ss;
+    pa_channel_map map;
+    pa_modargs *ma;
+    char *t;
+    const char *master_name;
+    pa_sink *master;
+    pa_sink_input_new_data sink_input_data;
+    pa_sink_new_data sink_data;
+    const char *plugin, *label, *input_ladspaport_map, *output_ladspaport_map;
+    LADSPA_Descriptor_Function descriptor_func;
+    unsigned long input_ladspaport[PA_CHANNELS_MAX], output_ladspaport[PA_CHANNELS_MAX];
+    const char *e, *cdata;
+    const LADSPA_Descriptor *d;
+    unsigned long p, h, j, n_control, c;
+    pa_memchunk silence;
+
+    pa_assert(m);
+
+    pa_assert_cc(sizeof(LADSPA_Data) == sizeof(float));
+
+    if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+        pa_log("Failed to parse module arguments.");
+        goto fail;
+    }
+
+    master_name = pa_modargs_get_value(ma, "sink_master", NULL);
+    if (!master_name) {
+        master_name = pa_modargs_get_value(ma, "master", NULL);
+        if (master_name)
+            pa_log_warn("The 'master' module argument is deprecated and may be removed in the future, "
+                        "please use the 'sink_master' argument instead.");
+    }
+
+    master = pa_namereg_get(m->core, master_name, PA_NAMEREG_SINK);
+    if (!master) {
+        pa_log("Master sink not found.");
+        goto fail;
+    }
+
+    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 (ss.format != PA_SAMPLE_FLOAT32) {
+        pa_log("LADSPA accepts float format only");
+        goto fail;
+    }
+
+    if (!(plugin = pa_modargs_get_value(ma, "plugin", NULL))) {
+        pa_log("Missing LADSPA plugin name");
+        goto fail;
+    }
+
+    if (!(label = pa_modargs_get_value(ma, "label", NULL))) {
+        pa_log("Missing LADSPA plugin label");
+        goto fail;
+    }
+
+    if (!(input_ladspaport_map = pa_modargs_get_value(ma, "input_ladspaport_map", NULL)))
+        pa_log_debug("Using default input ladspa port mapping");
+
+    if (!(output_ladspaport_map = pa_modargs_get_value(ma, "output_ladspaport_map", NULL)))
+        pa_log_debug("Using default output ladspa port mapping");
+
+    cdata = pa_modargs_get_value(ma, "control", NULL);
+
+    u = pa_xnew0(struct userdata, 1);
+    u->module = m;
+    m->userdata = u;
+    u->max_ladspaport_count = 1; /*to avoid division by zero etc. in pa__done when failing before this value has been set*/
+    u->channels = 0;
+    u->input = NULL;
+    u->output = NULL;
+    u->ss = ss;
+
+    if (!(e = getenv("LADSPA_PATH")))
+        /* The LADSPA_PATH preprocessor macro isn't a string literal (i.e. it
+         * doesn't contain quotes), because otherwise the build system would
+         * have an extra burden of getting the escaping right (Windows paths
+         * are especially tricky). PA_EXPAND_AND_STRINGIZE does the necessary
+         * escaping. */
+        e = PA_EXPAND_AND_STRINGIZE(LADSPA_PATH);
+
+    /* FIXME: This is not exactly thread safe */
+    t = pa_xstrdup(lt_dlgetsearchpath());
+    lt_dlsetsearchpath(e);
+    m->dl = lt_dlopenext(plugin);
+    lt_dlsetsearchpath(t);
+    pa_xfree(t);
+
+    if (!m->dl) {
+        pa_log("Failed to load LADSPA plugin: %s", lt_dlerror());
+        goto fail;
+    }
+
+    if (!(descriptor_func = (LADSPA_Descriptor_Function) pa_load_sym(m->dl, NULL, "ladspa_descriptor"))) {
+        pa_log("LADSPA module lacks ladspa_descriptor() symbol.");
+        goto fail;
+    }
+
+    for (j = 0;; j++) {
+
+        if (!(d = descriptor_func(j))) {
+            pa_log("Failed to find plugin label '%s' in plugin '%s'.", label, plugin);
+            goto fail;
+        }
+
+        if (pa_streq(d->Label, label))
+            break;
+    }
+
+    u->descriptor = d;
+
+    pa_log_debug("Module: %s", plugin);
+    pa_log_debug("Label: %s", d->Label);
+    pa_log_debug("Unique ID: %lu", d->UniqueID);
+    pa_log_debug("Name: %s", d->Name);
+    pa_log_debug("Maker: %s", d->Maker);
+    pa_log_debug("Copyright: %s", d->Copyright);
+
+    n_control = 0;
+    u->channels = ss.channels;
+
+    /*
+    * Enumerate ladspa ports
+    * Default mapping is in order given by the plugin
+    */
+    for (p = 0; p < d->PortCount; p++) {
+        if (LADSPA_IS_PORT_AUDIO(d->PortDescriptors[p])) {
+            if (LADSPA_IS_PORT_INPUT(d->PortDescriptors[p])) {
+                pa_log_debug("Port %lu is input: %s", p, d->PortNames[p]);
+                input_ladspaport[u->input_count] = p;
+                u->input_count++;
+            } else if (LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p])) {
+                pa_log_debug("Port %lu is output: %s", p, d->PortNames[p]);
+                output_ladspaport[u->output_count] = p;
+                u->output_count++;
+            }
+        } else if (LADSPA_IS_PORT_CONTROL(d->PortDescriptors[p]) && LADSPA_IS_PORT_INPUT(d->PortDescriptors[p])) {
+            pa_log_debug("Port %lu is control: %s", p, d->PortNames[p]);
+            n_control++;
+        } else
+            pa_log_debug("Ignored port %s", d->PortNames[p]);
+        /* XXX: Has anyone ever seen an in-place plugin with non-equal number of input and output ports? */
+        /* Could be if the plugin is for up-mixing stereo to 5.1 channels */
+        /* Or if the plugin is down-mixing 5.1 to two channel stereo or binaural encoded signal */
+        if (u->input_count > u->max_ladspaport_count)
+            u->max_ladspaport_count = u->input_count;
+        else
+            u->max_ladspaport_count = u->output_count;
+    }
+
+    if (u->channels % u->max_ladspaport_count) {
+        pa_log("Cannot handle non-integral number of plugins required for given number of channels");
+        goto fail;
+    }
+
+    pa_log_debug("Will run %lu plugin instances", u->channels / u->max_ladspaport_count);
+
+    /* Parse data for input ladspa port map */
+    if (input_ladspaport_map) {
+        const char *state = NULL;
+        char *pname;
+        c = 0;
+        while ((pname = pa_split(input_ladspaport_map, ",", &state))) {
+            if (c == u->input_count) {
+                pa_log("Too many ports in input ladspa port map");
+                pa_xfree(pname);
+                goto fail;
+            }
+
+            for (p = 0; p < d->PortCount; p++) {
+                if (pa_streq(d->PortNames[p], pname)) {
+                    if (LADSPA_IS_PORT_AUDIO(d->PortDescriptors[p]) && LADSPA_IS_PORT_INPUT(d->PortDescriptors[p])) {
+                        input_ladspaport[c] = p;
+                    } else {
+                        pa_log("Port %s is not an audio input ladspa port", pname);
+                        pa_xfree(pname);
+                        goto fail;
+                    }
+                }
+            }
+            c++;
+            pa_xfree(pname);
+        }
+    }
+
+    /* Parse data for output port map */
+    if (output_ladspaport_map) {
+        const char *state = NULL;
+        char *pname;
+        c = 0;
+        while ((pname = pa_split(output_ladspaport_map, ",", &state))) {
+            if (c == u->output_count) {
+                pa_log("Too many ports in output ladspa port map");
+                pa_xfree(pname);
+                goto fail;
+            }
+            for (p = 0; p < d->PortCount; p++) {
+                if (pa_streq(d->PortNames[p], pname)) {
+                    if (LADSPA_IS_PORT_AUDIO(d->PortDescriptors[p]) && LADSPA_IS_PORT_OUTPUT(d->PortDescriptors[p])) {
+                        output_ladspaport[c] = p;
+                    } else {
+                        pa_log("Port %s is not an output ladspa port", pname);
+                        pa_xfree(pname);
+                        goto fail;
+                    }
+                }
+            }
+            c++;
+            pa_xfree(pname);
+        }
+    }
+
+    u->block_size = pa_frame_align(pa_mempool_block_size_max(m->core->mempool), &ss);
+
+    /* Create buffers */
+    if (LADSPA_IS_INPLACE_BROKEN(d->Properties)) {
+        u->input = (LADSPA_Data**) pa_xnew(LADSPA_Data*, (unsigned) u->input_count);
+        for (c = 0; c < u->input_count; c++)
+            u->input[c] = (LADSPA_Data*) pa_xnew(uint8_t, (unsigned) u->block_size);
+        u->output = (LADSPA_Data**) pa_xnew(LADSPA_Data*, (unsigned) u->output_count);
+        for (c = 0; c < u->output_count; c++)
+            u->output[c] = (LADSPA_Data*) pa_xnew(uint8_t, (unsigned) u->block_size);
+    } else {
+        u->input = (LADSPA_Data**) pa_xnew(LADSPA_Data*, (unsigned) u->max_ladspaport_count);
+        for (c = 0; c < u->max_ladspaport_count; c++)
+            u->input[c] = (LADSPA_Data*) pa_xnew(uint8_t, (unsigned) u->block_size);
+        u->output = u->input;
+    }
+    /* Initialize plugin instances */
+    for (h = 0; h < (u->channels / u->max_ladspaport_count); h++) {
+        if (!(u->handle[h] = d->instantiate(d, ss.rate))) {
+            pa_log("Failed to instantiate plugin %s with label %s", plugin, d->Label);
+            goto fail;
+        }
+
+        for (c = 0; c < u->input_count; c++)
+            d->connect_port(u->handle[h], input_ladspaport[c], u->input[c]);
+        for (c = 0; c < u->output_count; c++)
+            d->connect_port(u->handle[h], output_ladspaport[c], u->output[c]);
+    }
+
+    u->n_control = n_control;
+
+    if (u->n_control > 0) {
+        double *control_values;
+        bool *use_default;
+
+        /* temporary storage for parser */
+        control_values = pa_xnew(double, (unsigned) u->n_control);
+        use_default = pa_xnew(bool, (unsigned) u->n_control);
+
+        /* real storage */
+        u->control = pa_xnew(LADSPA_Data, (unsigned) u->n_control);
+        u->use_default = pa_xnew(bool, (unsigned) u->n_control);
+
+        if ((parse_control_parameters(u, cdata, control_values, use_default) < 0) ||
+            (write_control_parameters(u, control_values, use_default) < 0)) {
+            pa_xfree(control_values);
+            pa_xfree(use_default);
+
+            pa_log("Failed to parse, validate or set control parameters");
+
+            goto fail;
+        }
+        connect_control_ports(u);
+        pa_xfree(control_values);
+        pa_xfree(use_default);
+    }
+
+    if (d->activate)
+        for (c = 0; c < (u->channels / u->max_ladspaport_count); c++)
+            d->activate(u->handle[c]);
+
+    /* Create 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, "sink_name", NULL))))
+        sink_data.name = pa_sprintf_malloc("%s.ladspa", master->name);
+    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, "filter");
+    pa_proplist_sets(sink_data.proplist, "device.ladspa.module", plugin);
+    pa_proplist_sets(sink_data.proplist, "device.ladspa.label", d->Label);
+    pa_proplist_sets(sink_data.proplist, "device.ladspa.name", d->Name);
+    pa_proplist_sets(sink_data.proplist, "device.ladspa.maker", d->Maker);
+    pa_proplist_sets(sink_data.proplist, "device.ladspa.copyright", d->Copyright);
+    pa_proplist_setf(sink_data.proplist, "device.ladspa.unique_id", "%lu", (unsigned long) d->UniqueID);
+
+    if (pa_modargs_get_proplist(ma, "sink_properties", sink_data.proplist, PA_UPDATE_REPLACE) < 0) {
+        pa_log("Invalid properties");
+        pa_sink_new_data_done(&sink_data);
+        goto fail;
+    }
+
+    u->autoloaded = DEFAULT_AUTOLOADED;
+    if (pa_modargs_get_value_boolean(ma, "autoloaded", &u->autoloaded) < 0) {
+        pa_log("Failed to parse autoloaded value");
+        goto fail;
+    }
+
+    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, "LADSPA Plugin %s on %s", d->Name, z ? z : master->name);
+    }
+
+    u->sink = pa_sink_new(m->core, &sink_data,
+                          (master->flags & (PA_SINK_LATENCY|PA_SINK_DYNAMIC_LATENCY)) | PA_SINK_SHARE_VOLUME_WITH_MASTER);
+    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->set_state_in_main_thread = sink_set_state_in_main_thread_cb;
+    u->sink->set_state_in_io_thread = sink_set_state_in_io_thread_cb;
+    u->sink->update_requested_latency = sink_update_requested_latency_cb;
+    u->sink->request_rewind = sink_request_rewind_cb;
+    pa_sink_set_set_mute_callback(u->sink, sink_set_mute_cb);
+    u->sink->userdata = u;
+
+    pa_sink_set_asyncmsgq(u->sink, master->asyncmsgq);
+
+    /* Create sink input */
+    pa_sink_input_new_data_init(&sink_input_data);
+    sink_input_data.driver = __FILE__;
+    sink_input_data.module = m;
+    pa_sink_input_new_data_set_sink(&sink_input_data, master, false, true);
+    sink_input_data.origin_sink = u->sink;
+    pa_proplist_sets(sink_input_data.proplist, PA_PROP_MEDIA_NAME, "LADSPA Stream");
+    pa_proplist_sets(sink_input_data.proplist, PA_PROP_MEDIA_ROLE, "filter");
+
+    if (pa_modargs_get_proplist(ma, "sink_input_properties", sink_input_data.proplist, PA_UPDATE_REPLACE) < 0) {
+        pa_log("Invalid properties");
+        pa_sink_input_new_data_done(&sink_input_data);
+        goto fail;
+    }
+
+    pa_sink_input_new_data_set_sample_spec(&sink_input_data, &ss);
+    pa_sink_input_new_data_set_channel_map(&sink_input_data, &map);
+    sink_input_data.flags |= PA_SINK_INPUT_START_CORKED;
+
+    pa_sink_input_new(&u->sink_input, m->core, &sink_input_data);
+    pa_sink_input_new_data_done(&sink_input_data);
+
+    if (!u->sink_input)
+        goto fail;
+
+    u->sink_input->pop = sink_input_pop_cb;
+    u->sink_input->process_rewind = sink_input_process_rewind_cb;
+    u->sink_input->update_max_rewind = sink_input_update_max_rewind_cb;
+    u->sink_input->update_max_request = sink_input_update_max_request_cb;
+    u->sink_input->update_sink_latency_range = sink_input_update_sink_latency_range_cb;
+    u->sink_input->update_sink_fixed_latency = sink_input_update_sink_fixed_latency_cb;
+    u->sink_input->kill = sink_input_kill_cb;
+    u->sink_input->attach = sink_input_attach_cb;
+    u->sink_input->detach = sink_input_detach_cb;
+    u->sink_input->may_move_to = sink_input_may_move_to_cb;
+    u->sink_input->moving = sink_input_moving_cb;
+    u->sink_input->mute_changed = sink_input_mute_changed_cb;
+    u->sink_input->suspend = sink_input_suspend_cb;
+    u->sink_input->userdata = u;
+
+    u->sink->input_to_master = u->sink_input;
+
+    pa_sink_input_get_silence(u->sink_input, &silence);
+    u->memblockq = pa_memblockq_new("module-ladspa-sink memblockq", 0, MEMBLOCKQ_MAXLENGTH, 0, &ss, 1, 1, 0, &silence);
+    pa_memblock_unref(silence.memblock);
+
+    /* The order here is important. The input must be put first,
+     * otherwise streams might attach to the sink before the sink
+     * input is attached to the master. */
+    pa_sink_input_put(u->sink_input);
+    pa_sink_put(u->sink);
+    pa_sink_input_cork(u->sink_input, false);
+
+#ifdef HAVE_DBUS
+    dbus_init(u);
+#endif
+
+    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_sink_linked_by(u->sink);
+}
+
+void pa__done(pa_module*m) {
+    struct userdata *u;
+    unsigned c;
+
+    pa_assert(m);
+
+    if (!(u = m->userdata))
+        return;
+
+    /* See comments in sink_input_kill_cb() above regarding
+    * destruction order! */
+
+#ifdef HAVE_DBUS
+    dbus_done(u);
+#endif
+
+    if (u->sink_input)
+        pa_sink_input_cork(u->sink_input, true);
+
+    if (u->sink)
+        pa_sink_unlink(u->sink);
+
+    if (u->sink_input) {
+        pa_sink_input_unlink(u->sink_input);
+        pa_sink_input_unref(u->sink_input);
+    }
+
+    if (u->sink)
+        pa_sink_unref(u->sink);
+
+    for (c = 0; c < (u->channels / u->max_ladspaport_count); c++) {
+        if (u->handle[c]) {
+            if (u->descriptor->deactivate)
+                u->descriptor->deactivate(u->handle[c]);
+            u->descriptor->cleanup(u->handle[c]);
+        }
+    }
+
+    if (u->output == u->input) {
+        if (u->input != NULL) {
+            for (c = 0; c < u->max_ladspaport_count; c++)
+                pa_xfree(u->input[c]);
+            pa_xfree(u->input);
+        }
+    } else {
+        if (u->input != NULL) {
+            for (c = 0; c < u->input_count; c++)
+                pa_xfree(u->input[c]);
+            pa_xfree(u->input);
+        }
+        if (u->output != NULL) {
+            for (c = 0; c < u->output_count; c++)
+                pa_xfree(u->output[c]);
+            pa_xfree(u->output);
+        }
+    }
+
+    if (u->memblockq)
+        pa_memblockq_free(u->memblockq);
+
+    pa_xfree(u->control);
+    pa_xfree(u->use_default);
+    pa_xfree(u);
+}