Merge remote branch 'coling/history'

10 files changed, 2191 insertions, 5 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index d6267a58..35941a66 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -117,9 +117,11 @@ EXTRA_DIST = \
 		depmod.py \
 		daemon/esdcompat.in \
 		daemon/start-pulseaudio-x11.in \
+		daemon/start-pulseaudio-kde.in \
 		utils/padsp \
 		modules/module-defs.h.m4 \
 		daemon/pulseaudio.desktop.in \
+		daemon/pulseaudio-kde.desktop.in \
 		map-file \
 		daemon/pulseaudio-system.conf \
 		modules/alsa/mixer/profile-sets/default.conf \
@@ -153,7 +155,8 @@ dbuspolicy_DATA = \
 
 if HAVE_X11
 xdgautostart_in_files = \
-		daemon/pulseaudio.desktop.in
+		daemon/pulseaudio.desktop.in \
+		daemon/pulseaudio-kde.desktop.in
 endif
 xdgautostart_DATA = $(xdgautostart_in_files:.desktop.in=.desktop)
 @INTLTOOL_DESKTOP_RULE@
@@ -216,7 +219,7 @@ if HAVE_AVAHI
 bin_PROGRAMS += pabrowse
 endif
 
-bin_SCRIPTS = esdcompat start-pulseaudio-x11
+bin_SCRIPTS = esdcompat start-pulseaudio-x11 start-pulseaudio-kde
 
 pacat_SOURCES = utils/pacat.c
 pacat_LDADD = $(AM_LDADD) libpulse.la libpulsecommon-@PA_MAJORMINORMICRO@.la $(LIBSNDFILE_LIBS)
@@ -690,6 +693,7 @@ pulseinclude_HEADERS = \
 		pulse/context.h \
 		pulse/def.h \
 		pulse/error.h \
+		pulse/ext-device-manager.h \
 		pulse/ext-stream-restore.h \
 		pulse/gccmacro.h \
 		pulse/introspect.h \
@@ -740,6 +744,7 @@ libpulse_la_SOURCES = \
 		pulse/context.c pulse/context.h \
 		pulse/def.h \
 		pulse/error.c pulse/error.h \
+		pulse/ext-device-manager.c pulse/ext-device-manager.h \
 		pulse/ext-stream-restore.c pulse/ext-stream-restore.h \
 		pulse/gccmacro.h \
 		pulse/internal.h \
@@ -993,6 +998,7 @@ modlibexec_LTLIBRARIES += \
 		module-sine-source.la \
 		module-detect.la \
 		module-volume-restore.la \
+		module-device-manager.la \
 		module-device-restore.la \
 		module-stream-restore.la \
 		module-card-restore.la \
@@ -1237,6 +1243,7 @@ SYMDEF_FILES = \
 		modules/jack/module-jack-sink-symdef.h \
 		modules/jack/module-jack-source-symdef.h \
 		modules/module-volume-restore-symdef.h \
+		modules/module-device-manager-symdef.h \
 		modules/module-device-restore-symdef.h \
 		modules/module-stream-restore-symdef.h \
 		modules/module-card-restore-symdef.h \
@@ -1569,6 +1576,12 @@ module_cork_music_on_phone_la_LDFLAGS = $(MODULE_LDFLAGS)
 module_cork_music_on_phone_la_LIBADD = $(AM_LIBADD) libpulsecore-@PA_MAJORMINORMICRO@.la libpulsecommon-@PA_MAJORMINORMICRO@.la libpulse.la
 module_cork_music_on_phone_la_CFLAGS = $(AM_CFLAGS)
 
+# Device description restore module
+module_device_manager_la_SOURCES = modules/module-device-manager.c
+module_device_manager_la_LDFLAGS = $(MODULE_LDFLAGS)
+module_device_manager_la_LIBADD = $(AM_LIBADD) libprotocol-native.la libpulsecore-@PA_MAJORMINORMICRO@.la libpulsecommon-@PA_MAJORMINORMICRO@.la libpulse.la
+module_device_manager_la_CFLAGS = $(AM_CFLAGS)
+
 # Device volume/muted restore module
 module_device_restore_la_SOURCES = modules/module-device-restore.c
 module_device_restore_la_LDFLAGS = $(MODULE_LDFLAGS)
@@ -1736,7 +1749,7 @@ module_rygel_media_server_la_CFLAGS = $(AM_CFLAGS) $(DBUS_CFLAGS)
 #        Some minor stuff         #
 ###################################
 
-CLEANFILES = esdcompat client.conf default.pa system.pa daemon.conf start-pulseaudio-x11 daemon/pulseaudio.desktop
+CLEANFILES = esdcompat client.conf default.pa system.pa daemon.conf start-pulseaudio-x11 start-pulseaudio-kde daemon/pulseaudio.desktop daemon/pulseaudio-kde.desktop
 
 esdcompat: daemon/esdcompat.in Makefile
 	sed -e 's,@PACKAGE_VERSION\@,$(PACKAGE_VERSION),g' \
@@ -1749,6 +1762,11 @@ start-pulseaudio-x11: daemon/start-pulseaudio-x11.in Makefile
 		-e 's,@PACTL_BINARY\@,$(bindir)/pactl,g' < $< > $@
 	chmod +x start-pulseaudio-x11
 
+start-pulseaudio-kde: daemon/start-pulseaudio-kde.in Makefile
+	sed -e 's,@PA_BINARY\@,$(PA_BINARY),g' \
+		-e 's,@PACTL_BINARY\@,$(bindir)/pactl,g' < $< > $@
+	chmod +x start-pulseaudio-kde
+
 client.conf: pulse/client.conf.in Makefile
 	sed -e 's,@PA_BINARY\@,$(PA_BINARY),g' < $< > $@
 
diff --git a/src/daemon/pulseaudio-kde.desktop.in b/src/daemon/pulseaudio-kde.desktop.in
new file mode 100644
index 00000000..06846421
--- /dev/null
+++ b/src/daemon/pulseaudio-kde.desktop.in
@@ -0,0 +1,11 @@
+[Desktop Entry]
+Version=1.0
+Encoding=UTF-8
+_Name=PulseAudio Sound System KDE Routing Policy
+_Comment=Start the PulseAudio Sound System with KDE Routing Policy
+Exec=start-pulseaudio-kde
+Terminal=false
+Type=Application
+Categories=
+GenericName=
+OnlyShowIn=KDE;
diff --git a/src/daemon/start-pulseaudio-kde.in b/src/daemon/start-pulseaudio-kde.in
new file mode 100755
index 00000000..c319e7dd
--- /dev/null
+++ b/src/daemon/start-pulseaudio-kde.in
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+# This file is part of PulseAudio.
+#
+# 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 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.
+
+set -e
+
+[ -z "$PULSE_SERVER" ]
+
+@PA_BINARY@ --start "$@"
+
+if [ x"$DISPLAY" != x ] ; then
+
+    @PACTL_BINARY@ load-module module-device-manager "do_routing=1" > /dev/null
+
+fi
diff --git a/src/map-file b/src/map-file
index 54c518ec..6f7bdace 100644
--- a/src/map-file
+++ b/src/map-file
@@ -144,6 +144,14 @@ pa_cvolume_set_fade;
 pa_cvolume_set_position;
 pa_cvolume_snprint;
 pa_cvolume_valid;
+pa_ext_device_manager_delete;
+pa_ext_device_manager_enable_role_device_priority_routing;
+pa_ext_device_manager_read;
+pa_ext_device_manager_reorder_devices_for_role;
+pa_ext_device_manager_set_device_description;
+pa_ext_device_manager_set_subscribe_cb;
+pa_ext_device_manager_subscribe;
+pa_ext_device_manager_test;
 pa_ext_stream_restore_delete;
 pa_ext_stream_restore_read;
 pa_ext_stream_restore_set_subscribe_cb;
diff --git a/src/modules/module-device-manager.c b/src/modules/module-device-manager.c
new file mode 100644
index 00000000..bfcbfeaf
--- /dev/null
+++ b/src/modules/module-device-manager.c
@@ -0,0 +1,1540 @@
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2006-2008 Lennart Poettering
+  Copyright 2009 Colin Guthrie
+
+  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 <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+#include <pulse/xmalloc.h>
+#include <pulse/volume.h>
+#include <pulse/timeval.h>
+#include <pulse/util.h>
+#include <pulse/rtclock.h>
+
+#include <pulsecore/core-error.h>
+#include <pulsecore/module.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/modargs.h>
+#include <pulsecore/log.h>
+#include <pulsecore/core-subscribe.h>
+#include <pulsecore/sink-input.h>
+#include <pulsecore/source-output.h>
+#include <pulsecore/namereg.h>
+#include <pulsecore/protocol-native.h>
+#include <pulsecore/pstream.h>
+#include <pulsecore/pstream-util.h>
+#include <pulsecore/database.h>
+
+#include "module-device-manager-symdef.h"
+
+PA_MODULE_AUTHOR("Colin Guthrie");
+PA_MODULE_DESCRIPTION("Keep track of devices (and their descriptions) both past and present and prioritise by role");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(TRUE);
+PA_MODULE_USAGE(
+    "do_routing=<Automatically route streams based on a priority list (unique per-role)?> "
+    "on_hotplug=<When new device becomes available, recheck streams?> "
+    "on_rescue=<When device becomes unavailable, recheck streams?>");
+
+#define SAVE_INTERVAL (10 * PA_USEC_PER_SEC)
+#define DUMP_DATABASE
+
+static const char* const valid_modargs[] = {
+    "do_routing",
+    "on_hotplug",
+    "on_rescue",
+    NULL
+};
+
+#define NUM_ROLES 9
+enum {
+    ROLE_NONE,
+    ROLE_VIDEO,
+    ROLE_MUSIC,
+    ROLE_GAME,
+    ROLE_EVENT,
+    ROLE_PHONE,
+    ROLE_ANIMATION,
+    ROLE_PRODUCTION,
+    ROLE_A11Y,
+};
+
+typedef uint32_t role_indexes_t[NUM_ROLES];
+
+static const char* role_names[NUM_ROLES] = {
+    "none",
+    "video",
+    "music",
+    "game",
+    "event",
+    "phone",
+    "animation",
+    "production",
+    "a11y",
+};
+
+struct userdata {
+    pa_core *core;
+    pa_module *module;
+    pa_subscription *subscription;
+    pa_hook_slot
+        *sink_new_hook_slot,
+        *source_new_hook_slot,
+        *sink_input_new_hook_slot,
+        *source_output_new_hook_slot,
+        *sink_put_hook_slot,
+        *source_put_hook_slot,
+        *sink_unlink_hook_slot,
+        *source_unlink_hook_slot,
+        *connection_unlink_hook_slot;
+    pa_time_event *save_time_event;
+    pa_database *database;
+
+    pa_native_protocol *protocol;
+    pa_idxset *subscribed;
+
+    pa_bool_t on_hotplug;
+    pa_bool_t on_rescue;
+    pa_bool_t do_routing;
+
+    role_indexes_t preferred_sinks;
+    role_indexes_t preferred_sources;
+};
+
+#define ENTRY_VERSION 1
+
+struct entry {
+    uint8_t version;
+    char description[PA_NAME_MAX];
+    pa_bool_t user_set_description;
+    char icon[PA_NAME_MAX];
+    role_indexes_t priority;
+} PA_GCC_PACKED;
+
+enum {
+    SUBCOMMAND_TEST,
+    SUBCOMMAND_READ,
+    SUBCOMMAND_RENAME,
+    SUBCOMMAND_DELETE,
+    SUBCOMMAND_ROLE_DEVICE_PRIORITY_ROUTING,
+    SUBCOMMAND_REORDER,
+    SUBCOMMAND_SUBSCRIBE,
+    SUBCOMMAND_EVENT
+};
+
+
+static struct entry* read_entry(struct userdata *u, const char *name) {
+    pa_datum key, data;
+    struct entry *e;
+
+    pa_assert(u);
+    pa_assert(name);
+
+    key.data = (char*) name;
+    key.size = strlen(name);
+
+    pa_zero(data);
+
+    if (!pa_database_get(u->database, &key, &data))
+        goto fail;
+
+    if (data.size != sizeof(struct entry)) {
+        pa_log_debug("Database contains entry for device %s of wrong size %lu != %lu. Probably due to upgrade, ignoring.", name, (unsigned long) data.size, (unsigned long) sizeof(struct entry));
+        goto fail;
+    }
+
+    e = (struct entry*) data.data;
+
+    if (e->version != ENTRY_VERSION) {
+        pa_log_debug("Version of database entry for device %s doesn't match our version. Probably due to upgrade, ignoring.", name);
+        goto fail;
+    }
+
+    if (!memchr(e->description, 0, sizeof(e->description))) {
+        pa_log_warn("Database contains entry for device %s with missing NUL byte in description", name);
+        goto fail;
+    }
+
+    if (!memchr(e->icon, 0, sizeof(e->icon))) {
+        pa_log_warn("Database contains entry for device %s with missing NUL byte in icon", name);
+        goto fail;
+    }
+
+    return e;
+
+fail:
+
+    pa_datum_free(&data);
+    return NULL;
+}
+
+#ifdef DUMP_DATABASE
+static void dump_database_helper(struct userdata *u, uint32_t role_index, const char* human, pa_bool_t sink_mode) {
+    pa_assert(u);
+    pa_assert(human);
+
+    if (sink_mode) {
+        pa_sink *s;
+        if (PA_INVALID_INDEX != u->preferred_sinks[role_index] && (s = pa_idxset_get_by_index(u->core->sinks, u->preferred_sinks[role_index])))
+            pa_log_debug("   %s %s (%s)", human, pa_strnull(pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION)), s->name);
+        else
+            pa_log_debug("   %s No sink specified", human);
+    } else {
+        pa_source *s;
+        if (PA_INVALID_INDEX != u->preferred_sources[role_index] && (s = pa_idxset_get_by_index(u->core->sources, u->preferred_sources[role_index])))
+            pa_log_debug("   %s %s (%s)", human, pa_strnull(pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION)), s->name);
+        else
+            pa_log_debug("   %s No source specified", human);
+    }
+}
+
+static void dump_database(struct userdata *u) {
+    pa_datum key;
+    pa_bool_t done;
+
+    pa_assert(u);
+
+    done = !pa_database_first(u->database, &key, NULL);
+
+    pa_log_debug("Dumping database");
+    while (!done) {
+        char *name;
+        struct entry *e;
+        pa_datum next_key;
+
+        done = !pa_database_next(u->database, &key, &next_key, NULL);
+
+        name = pa_xstrndup(key.data, key.size);
+
+        if ((e = read_entry(u, name))) {
+            pa_log_debug(" Got entry: %s", name);
+            pa_log_debug("  Description: %s", e->description);
+            pa_log_debug("  Priorities: None:   %3u, Video: %3u, Music:  %3u, Game: %3u, Event: %3u",
+                         e->priority[ROLE_NONE], e->priority[ROLE_VIDEO], e->priority[ROLE_MUSIC], e->priority[ROLE_GAME], e->priority[ROLE_EVENT]);
+            pa_log_debug("              Phone:  %3u, Anim:  %3u, Prodtn: %3u, A11y: %3u",
+                         e->priority[ROLE_PHONE], e->priority[ROLE_ANIMATION], e->priority[ROLE_PRODUCTION], e->priority[ROLE_A11Y]);
+            pa_xfree(e);
+        }
+
+        pa_xfree(name);
+
+        pa_datum_free(&key);
+        key = next_key;
+    }
+
+    if (u->do_routing) {
+        pa_log_debug(" Highest priority devices per-role:");
+
+        pa_log_debug("  Sinks:");
+        for (uint32_t role = ROLE_NONE; role < NUM_ROLES; ++role) {
+            char name[13];
+            uint32_t len = PA_MIN(12u, strlen(role_names[role]));
+            strncpy(name, role_names[role], len);
+            for (int i = len+1; i < 12; ++i) name[i] = ' ';
+            name[len] = ':'; name[0] -= 32; name[12] = '\0';
+            dump_database_helper(u, role, name, TRUE);
+        }
+
+        pa_log_debug("  Sources:");
+        for (uint32_t role = ROLE_NONE; role < NUM_ROLES; ++role) {
+            char name[13];
+            uint32_t len = PA_MIN(12u, strlen(role_names[role]));
+            strncpy(name, role_names[role], len);
+            for (int i = len+1; i < 12; ++i) name[i] = ' ';
+            name[len] = ':'; name[0] -= 32; name[12] = '\0';
+            dump_database_helper(u, role, name, FALSE);
+        }
+    }
+
+    pa_log_debug("Completed database dump");
+}
+#endif
+
+static void save_time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *t, void *userdata) {
+    struct userdata *u = userdata;
+
+    pa_assert(a);
+    pa_assert(e);
+    pa_assert(u);
+
+    pa_assert(e == u->save_time_event);
+    u->core->mainloop->time_free(u->save_time_event);
+    u->save_time_event = NULL;
+
+    pa_database_sync(u->database);
+    pa_log_info("Synced.");
+
+#ifdef DUMP_DATABASE
+    dump_database(u);
+#endif
+}
+
+static void notify_subscribers(struct userdata *u) {
+
+    pa_native_connection *c;
+    uint32_t idx;
+
+    pa_assert(u);
+
+    for (c = pa_idxset_first(u->subscribed, &idx); c; c = pa_idxset_next(u->subscribed, &idx)) {
+        pa_tagstruct *t;
+
+        t = pa_tagstruct_new(NULL, 0);
+        pa_tagstruct_putu32(t, PA_COMMAND_EXTENSION);
+        pa_tagstruct_putu32(t, 0);
+        pa_tagstruct_putu32(t, u->module->index);
+        pa_tagstruct_puts(t, u->module->name);
+        pa_tagstruct_putu32(t, SUBCOMMAND_EVENT);
+
+        pa_pstream_send_tagstruct(pa_native_connection_get_pstream(c), t);
+    }
+}
+
+static void trigger_save(struct userdata *u) {
+
+    pa_assert(u);
+
+    notify_subscribers(u);
+
+    if (u->save_time_event)
+        return;
+
+    u->save_time_event = pa_core_rttime_new(u->core, pa_rtclock_now() + SAVE_INTERVAL, save_time_callback, u);
+}
+
+static pa_bool_t entries_equal(const struct entry *a, const struct entry *b) {
+
+    pa_assert(a);
+    pa_assert(b);
+
+    if (strncmp(a->description, b->description, sizeof(a->description))
+        || a->user_set_description != b->user_set_description
+        || strncmp(a->icon, b->icon, sizeof(a->icon)))
+        return FALSE;
+
+    for (int i=0; i < NUM_ROLES; ++i)
+        if (a->priority[i] != b->priority[i])
+            return FALSE;
+
+    return TRUE;
+}
+
+static char *get_name(const char *key, const char *prefix) {
+    char *t;
+
+    if (strncmp(key, prefix, strlen(prefix)))
+        return NULL;
+
+    t = pa_xstrdup(key + strlen(prefix));
+    return t;
+}
+
+static inline struct entry *load_or_initialize_entry(struct userdata *u, struct entry *entry, const char *name, const char *prefix) {
+    struct entry *old;
+
+    pa_assert(u);
+    pa_assert(entry);
+    pa_assert(name);
+    pa_assert(prefix);
+
+    if ((old = read_entry(u, name)))
+        *entry = *old;
+    else {
+        /* This is a new device, so make sure we write it's priority list correctly */
+        role_indexes_t max_priority;
+        pa_datum key;
+        pa_bool_t done;
+
+        pa_zero(max_priority);
+        done = !pa_database_first(u->database, &key, NULL);
+
+        /* Find all existing devices with the same prefix so we calculate the current max priority for each role */
+        while (!done) {
+            pa_datum next_key;
+
+            done = !pa_database_next(u->database, &key, &next_key, NULL);
+
+            if (key.size > strlen(prefix) && strncmp(key.data, prefix, strlen(prefix)) == 0) {
+                char *name2;
+                struct entry *e;
+
+                name2 = pa_xstrndup(key.data, key.size);
+
+                if ((e = read_entry(u, name2))) {
+                    for (uint32_t i = 0; i < NUM_ROLES; ++i) {
+                        max_priority[i] = PA_MAX(max_priority[i], e->priority[i]);
+                    }
+
+                    pa_xfree(e);
+                }
+
+                pa_xfree(name2);
+            }
+            pa_datum_free(&key);
+            key = next_key;
+        }
+
+        /* Actually initialise our entry now we've calculated it */
+        for (uint32_t i = 0; i < NUM_ROLES; ++i) {
+            entry->priority[i] = max_priority[i] + 1;
+        }
+        entry->user_set_description = FALSE;
+    }
+
+    return old;
+}
+
+static uint32_t get_role_index(const char* role) {
+    pa_assert(role);
+
+    for (uint32_t i = ROLE_NONE; i < NUM_ROLES; ++i)
+        if (strcmp(role, role_names[i]) == 0)
+            return i;
+
+    return PA_INVALID_INDEX;
+}
+
+static void update_highest_priority_device_indexes(struct userdata *u, const char *prefix, void *ignore_device) {
+    role_indexes_t *indexes, highest_priority_available;
+    pa_datum key;
+    pa_bool_t done, sink_mode;
+
+    pa_assert(u);
+    pa_assert(prefix);
+
+    sink_mode = (strcmp(prefix, "sink:") == 0);
+
+    if (sink_mode)
+        indexes = &u->preferred_sinks;
+    else
+        indexes = &u->preferred_sources;
+
+    for (uint32_t i = 0; i < NUM_ROLES; ++i) {
+        (*indexes)[i] = PA_INVALID_INDEX;
+    }
+    pa_zero(highest_priority_available);
+
+    done = !pa_database_first(u->database, &key, NULL);
+
+    /* Find all existing devices with the same prefix so we find the highest priority device for each role */
+    while (!done) {
+        pa_datum next_key;
+
+        done = !pa_database_next(u->database, &key, &next_key, NULL);
+
+        if (key.size > strlen(prefix) && strncmp(key.data, prefix, strlen(prefix)) == 0) {
+            char *name, *device_name;
+            struct entry *e;
+
+            name = pa_xstrndup(key.data, key.size);
+            device_name = get_name(name, prefix);
+
+            if ((e = read_entry(u, name))) {
+                for (uint32_t i = 0; i < NUM_ROLES; ++i) {
+                    if (!highest_priority_available[i] || e->priority[i] < highest_priority_available[i]) {
+                        /* We've found a device with a higher priority than that we've currently got,
+                           so see if it is currently available or not and update our list */
+                        uint32_t idx;
+                        pa_bool_t found = FALSE;
+
+                        if (sink_mode) {
+                            pa_sink *sink;
+
+                            PA_IDXSET_FOREACH(sink, u->core->sinks, idx) {
+                                if ((pa_sink*) ignore_device == sink)
+                                    continue;
+                                if (strcmp(sink->name, device_name) == 0) {
+                                    found = TRUE;
+                                    idx = sink->index; /* Is this needed? */
+                                    break;
+                                }
+                            }
+                        } else {
+                            pa_source *source;
+
+                            PA_IDXSET_FOREACH(source, u->core->sources, idx) {
+                                if ((pa_source*) ignore_device == source)
+                                    continue;
+                                if (strcmp(source->name, device_name) == 0) {
+                                    found = TRUE;
+                                    idx = source->index; /* Is this needed? */
+                                    break;
+                                }
+                            }
+                        }
+                        if (found) {
+                            highest_priority_available[i] = e->priority[i];
+                            (*indexes)[i] = idx;
+                        }
+
+                    }
+                }
+
+                pa_xfree(e);
+            }
+
+            pa_xfree(name);
+            pa_xfree(device_name);
+        }
+
+        pa_datum_free(&key);
+        key = next_key;
+    }
+}
+
+
+static void route_sink_input(struct userdata *u, pa_sink_input *si) {
+    const char *role;
+    uint32_t role_index, device_index;
+    pa_sink *sink;
+
+    pa_assert(u);
+    pa_assert(u->do_routing);
+
+    if (si->save_sink)
+        return;
+
+    /* Skip this if it is already in the process of being moved anyway */
+    if (!si->sink)
+        return;
+
+    /* It might happen that a stream and a sink are set up at the
+    same time, in which case we want to make sure we don't
+    interfere with that */
+    if (!PA_SINK_INPUT_IS_LINKED(pa_sink_input_get_state(si)))
+        return;
+
+    if (!(role = pa_proplist_gets(si->proplist, PA_PROP_MEDIA_ROLE)))
+        role_index = get_role_index("none");
+    else
+        role_index = get_role_index(role);
+
+    if (PA_INVALID_INDEX == role_index)
+        return;
+
+    device_index = u->preferred_sinks[role_index];
+    if (PA_INVALID_INDEX == device_index)
+        return;
+
+    if (!(sink = pa_idxset_get_by_index(u->core->sinks, device_index)))
+        return;
+
+    if (si->sink != sink)
+        pa_sink_input_move_to(si, sink, FALSE);
+}
+
+static pa_hook_result_t route_sink_inputs(struct userdata *u, pa_sink *ignore_sink) {
+    pa_sink_input *si;
+    uint32_t idx;
+
+    pa_assert(u);
+
+    if (!u->do_routing)
+        return PA_HOOK_OK;
+
+    update_highest_priority_device_indexes(u, "sink:", ignore_sink);
+
+    PA_IDXSET_FOREACH(si, u->core->sink_inputs, idx) {
+        route_sink_input(u, si);
+    }
+
+    return PA_HOOK_OK;
+}
+
+static void route_source_output(struct userdata *u, pa_source_output *so) {
+    const char *role;
+    uint32_t role_index, device_index;
+    pa_source *source;
+
+    pa_assert(u);
+    pa_assert(u->do_routing);
+
+    if (so->save_source)
+        return;
+
+    if (so->direct_on_input)
+        return;
+
+    /* Skip this if it is already in the process of being moved anyway */
+    if (!so->source)
+        return;
+
+    /* It might happen that a stream and a source are set up at the
+    same time, in which case we want to make sure we don't
+    interfere with that */
+    if (!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(so)))
+        return;
+
+    if (!(role = pa_proplist_gets(so->proplist, PA_PROP_MEDIA_ROLE)))
+        role_index = get_role_index("none");
+    else
+        role_index = get_role_index(role);
+
+    if (PA_INVALID_INDEX == role_index)
+        return;
+
+    device_index = u->preferred_sources[role_index];
+    if (PA_INVALID_INDEX == device_index)
+        return;
+
+    if (!(source = pa_idxset_get_by_index(u->core->sources, device_index)))
+        return;
+
+    if (so->source != source)
+        pa_source_output_move_to(so, source, FALSE);
+}
+
+static pa_hook_result_t route_source_outputs(struct userdata *u, pa_source* ignore_source) {
+    pa_source_output *so;
+    uint32_t idx;
+
+    pa_assert(u);
+
+    if (!u->do_routing)
+        return PA_HOOK_OK;
+
+    update_highest_priority_device_indexes(u, "source:", ignore_source);
+
+    PA_IDXSET_FOREACH(so, u->core->source_outputs, idx) {
+        route_source_output(u, so);
+    }
+
+    return PA_HOOK_OK;
+}
+
+static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
+    struct userdata *u = userdata;
+    struct entry entry, *old = NULL;
+    char *name = NULL;
+    pa_datum key, data;
+
+    pa_assert(c);
+    pa_assert(u);
+
+    if (t != (PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_NEW) &&
+        t != (PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE) &&
+        t != (PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_NEW) &&
+        t != (PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE) &&
+
+        /*t != (PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW) &&*/
+        t != (PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE) &&
+        /*t != (PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_NEW) &&*/
+        t != (PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE))
+        return;
+
+    pa_zero(entry);
+    entry.version = ENTRY_VERSION;
+
+    if ((t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SINK_INPUT) {
+        pa_sink_input *si;
+
+        if (!u->do_routing)
+            return;
+        if (!(si = pa_idxset_get_by_index(c->sink_inputs, idx)))
+            return;
+
+        /* The role may change mid-stream, so we reroute */
+        route_sink_input(u, si);
+
+        return;
+    } else if ((t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT) {
+        pa_source_output *so;
+
+        if (!u->do_routing)
+            return;
+        if (!(so = pa_idxset_get_by_index(c->source_outputs, idx)))
+            return;
+
+        /* The role may change mid-stream, so we reroute */
+        route_source_output(u, so);
+
+        return;
+    } else if ((t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SINK) {
+        pa_sink *sink;
+
+        if (!(sink = pa_idxset_get_by_index(c->sinks, idx)))
+            return;
+
+        name = pa_sprintf_malloc("sink:%s", sink->name);
+
+        old = load_or_initialize_entry(u, &entry, name, "sink:");
+
+        if (!entry.user_set_description)
+            pa_strlcpy(entry.description, pa_strnull(pa_proplist_gets(sink->proplist, PA_PROP_DEVICE_DESCRIPTION)), sizeof(entry.description));
+        else if (strncmp(entry.description, pa_strnull(pa_proplist_gets(sink->proplist, PA_PROP_DEVICE_DESCRIPTION)), sizeof(entry.description)) != 0) {
+            /* Warning: If two modules fight over the description, this could cause an infinite loop.
+               by changing the description here, we retrigger this subscription callback. The only thing stopping us from
+               looping is the fact that the string comparison will fail on the second iteration. If another module tries to manage
+               the description, this will fail... */
+            pa_sink_set_description(sink, entry.description);
+        }
+
+        pa_strlcpy(entry.icon, pa_strnull(pa_proplist_gets(sink->proplist, PA_PROP_DEVICE_ICON_NAME)), sizeof(entry.icon));
+
+    } else  if ((t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SOURCE) {
+        pa_source *source;
+
+        pa_assert((t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SOURCE);
+
+        if (!(source = pa_idxset_get_by_index(c->sources, idx)))
+            return;
+
+        if (source->monitor_of)
+            return;
+
+        name = pa_sprintf_malloc("source:%s", source->name);
+
+        old = load_or_initialize_entry(u, &entry, name, "source:");
+
+        if (!entry.user_set_description)
+            pa_strlcpy(entry.description, pa_strnull(pa_proplist_gets(source->proplist, PA_PROP_DEVICE_DESCRIPTION)), sizeof(entry.description));
+        else if (strncmp(entry.description, pa_strnull(pa_proplist_gets(source->proplist, PA_PROP_DEVICE_DESCRIPTION)), sizeof(entry.description)) != 0) {
+            /* Warning: If two modules fight over the description, this could cause an infinite loop.
+               by changing the description here, we retrigger this subscription callback. The only thing stopping us from
+               looping is the fact that the string comparison will fail on the second iteration. If another module tries to manage
+               the description, this will fail... */
+            pa_source_set_description(source, entry.description);
+        }
+
+        pa_strlcpy(entry.icon, pa_strnull(pa_proplist_gets(source->proplist, PA_PROP_DEVICE_ICON_NAME)), sizeof(entry.icon));
+    }
+
+    pa_assert(name);
+
+    if (old) {
+
+        if (entries_equal(old, &entry)) {
+            pa_xfree(old);
+            pa_xfree(name);
+
+            return;
+        }
+
+        pa_xfree(old);
+    }
+
+    key.data = name;
+    key.size = strlen(name);
+
+    data.data = &entry;
+    data.size = sizeof(entry);
+
+    pa_log_info("Storing device %s.", name);
+
+    if (pa_database_set(u->database, &key, &data, TRUE) == 0)
+        trigger_save(u);
+    else
+        pa_log_warn("Could not save device");;
+
+    pa_xfree(name);
+}
+
+static pa_hook_result_t sink_new_hook_callback(pa_core *c, pa_sink_new_data *new_data, struct userdata *u) {
+    char *name;
+    struct entry *e;
+
+    pa_assert(c);
+    pa_assert(new_data);
+    pa_assert(u);
+
+    name = pa_sprintf_malloc("sink:%s", new_data->name);
+
+    if ((e = read_entry(u, name))) {
+        if (e->user_set_description && strncmp(e->description, pa_proplist_gets(new_data->proplist, PA_PROP_DEVICE_DESCRIPTION), sizeof(e->description)) != 0) {
+            pa_log_info("Restoring description for sink %s.", new_data->name);
+            pa_proplist_sets(new_data->proplist, PA_PROP_DEVICE_DESCRIPTION, e->description);
+        }
+
+        pa_xfree(e);
+    }
+
+    pa_xfree(name);
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_new_hook_callback(pa_core *c, pa_source_new_data *new_data, struct userdata *u) {
+    char *name;
+    struct entry *e;
+
+    pa_assert(c);
+    pa_assert(new_data);
+    pa_assert(u);
+
+    name = pa_sprintf_malloc("source:%s", new_data->name);
+
+    if ((e = read_entry(u, name))) {
+        if (e->user_set_description && strncmp(e->description, pa_proplist_gets(new_data->proplist, PA_PROP_DEVICE_DESCRIPTION), sizeof(e->description)) != 0) {
+            /* NB, We cannot detect if we are a monitor here... this could mess things up a bit... */
+            pa_log_info("Restoring description for source %s.", new_data->name);
+            pa_proplist_sets(new_data->proplist, PA_PROP_DEVICE_DESCRIPTION, e->description);
+        }
+
+        pa_xfree(e);
+    }
+
+    pa_xfree(name);
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t sink_input_new_hook_callback(pa_core *c, pa_sink_input_new_data *new_data, struct userdata *u) {
+    const char *role;
+    uint32_t role_index;
+
+    pa_assert(c);
+    pa_assert(new_data);
+    pa_assert(u);
+
+    if (!u->do_routing)
+        return PA_HOOK_OK;
+
+    if (new_data->sink)
+        pa_log_debug("Not restoring device for stream because already set.");
+    else {
+        if (!(role = pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_ROLE)))
+            role_index = get_role_index("none");
+        else
+            role_index = get_role_index(role);
+
+        if (PA_INVALID_INDEX != role_index) {
+            uint32_t device_index;
+
+            device_index = u->preferred_sinks[role_index];
+            if (PA_INVALID_INDEX != device_index) {
+                pa_sink *sink;
+
+                if ((sink = pa_idxset_get_by_index(u->core->sinks, device_index))) {
+                    new_data->sink = sink;
+                    new_data->save_sink = FALSE;
+                }
+            }
+        }
+    }
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_output_new_hook_callback(pa_core *c, pa_source_output_new_data *new_data, struct userdata *u) {
+    const char *role;
+    uint32_t role_index;
+
+    pa_assert(c);
+    pa_assert(new_data);
+    pa_assert(u);
+
+    if (!u->do_routing)
+        return PA_HOOK_OK;
+
+    if (new_data->direct_on_input)
+        return PA_HOOK_OK;
+
+    if (new_data->source)
+        pa_log_debug("Not restoring device for stream because already set.");
+    else {
+        if (!(role = pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_ROLE)))
+            role_index = get_role_index("none");
+        else
+            role_index = get_role_index(role);
+
+        if (PA_INVALID_INDEX != role_index) {
+            uint32_t device_index;
+
+            device_index = u->preferred_sources[role_index];
+            if (PA_INVALID_INDEX != device_index) {
+                pa_source *source;
+
+                if ((source = pa_idxset_get_by_index(u->core->sources, device_index))) {
+                    new_data->source = source;
+                    new_data->save_source = FALSE;
+                }
+            }
+        }
+    }
+
+    return PA_HOOK_OK;
+}
+
+
+static pa_hook_result_t sink_put_hook_callback(pa_core *c, PA_GCC_UNUSED pa_sink *sink, struct userdata *u) {
+    pa_assert(c);
+    pa_assert(u);
+    pa_assert(u->core == c);
+    pa_assert(u->on_hotplug);
+
+    notify_subscribers(u);
+
+    return route_sink_inputs(u, NULL);
+}
+
+static pa_hook_result_t source_put_hook_callback(pa_core *c, PA_GCC_UNUSED pa_source *source, struct userdata *u) {
+    pa_assert(c);
+    pa_assert(u);
+    pa_assert(u->core == c);
+    pa_assert(u->on_hotplug);
+
+    notify_subscribers(u);
+
+    return route_source_outputs(u, NULL);
+}
+
+static pa_hook_result_t sink_unlink_hook_callback(pa_core *c, pa_sink *sink, struct userdata *u) {
+    pa_assert(c);
+    pa_assert(sink);
+    pa_assert(u);
+    pa_assert(u->core == c);
+    pa_assert(u->on_rescue);
+
+    /* There's no point in doing anything if the core is shut down anyway */
+    if (c->state == PA_CORE_SHUTDOWN)
+        return PA_HOOK_OK;
+
+    notify_subscribers(u);
+
+    return route_sink_inputs(u, sink);
+}
+
+static pa_hook_result_t source_unlink_hook_callback(pa_core *c, pa_source *source, struct userdata *u) {
+    pa_assert(c);
+    pa_assert(source);
+    pa_assert(u);
+    pa_assert(u->core == c);
+    pa_assert(u->on_rescue);
+
+    /* There's no point in doing anything if the core is shut down anyway */
+    if (c->state == PA_CORE_SHUTDOWN)
+        return PA_HOOK_OK;
+
+    notify_subscribers(u);
+
+    return route_source_outputs(u, source);
+}
+
+
+static void apply_entry(struct userdata *u, const char *name, struct entry *e) {
+    uint32_t idx;
+    char *n;
+
+    pa_assert(u);
+    pa_assert(name);
+    pa_assert(e);
+
+    if (!e->user_set_description)
+        return;
+
+    if ((n = get_name(name, "sink:"))) {
+        pa_sink *s;
+        PA_IDXSET_FOREACH(s, u->core->sinks, idx) {
+            if (!pa_streq(s->name, n)) {
+                continue;
+            }
+
+            pa_log_info("Setting description for sink %s to '%s'", s->name, e->description);
+            pa_sink_set_description(s, e->description);
+        }
+        pa_xfree(n);
+    }
+    else if ((n = get_name(name, "source:"))) {
+        pa_source *s;
+        PA_IDXSET_FOREACH(s, u->core->sources, idx) {
+            if (!pa_streq(s->name, n)) {
+                continue;
+            }
+
+            if (s->monitor_of) {
+                pa_log_warn("Cowardly refusing to set the description for monitor source %s.", s->name);
+                continue;
+            }
+
+            pa_log_info("Setting description for source %s to '%s'", s->name, e->description);
+            pa_source_set_description(s, e->description);
+        }
+        pa_xfree(n);
+    }
+}
+
+
+#define EXT_VERSION 1
+
+static int extension_cb(pa_native_protocol *p, pa_module *m, pa_native_connection *c, uint32_t tag, pa_tagstruct *t) {
+  struct userdata *u;
+  uint32_t command;
+  pa_tagstruct *reply = NULL;
+
+  pa_assert(p);
+  pa_assert(m);
+  pa_assert(c);
+  pa_assert(t);
+
+  u = m->userdata;
+
+  if (pa_tagstruct_getu32(t, &command) < 0)
+    goto fail;
+
+  reply = pa_tagstruct_new(NULL, 0);
+  pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
+  pa_tagstruct_putu32(reply, tag);
+
+  switch (command) {
+    case SUBCOMMAND_TEST: {
+      if (!pa_tagstruct_eof(t))
+        goto fail;
+
+      pa_tagstruct_putu32(reply, EXT_VERSION);
+      break;
+    }
+
+    case SUBCOMMAND_READ: {
+      pa_datum key;
+      pa_bool_t done;
+
+      if (!pa_tagstruct_eof(t))
+        goto fail;
+
+      done = !pa_database_first(u->database, &key, NULL);
+
+      while (!done) {
+        pa_datum next_key;
+        struct entry *e;
+        char *name;
+
+        done = !pa_database_next(u->database, &key, &next_key, NULL);
+
+        name = pa_xstrndup(key.data, key.size);
+        pa_datum_free(&key);
+
+        if ((e = read_entry(u, name))) {
+            uint32_t idx;
+            char *devname;
+            pa_bool_t available = FALSE;
+
+            if ((devname = get_name(name, "sink:"))) {
+                pa_sink* s;
+                PA_IDXSET_FOREACH(s, u->core->sinks, idx) {
+                    if (strcmp(s->name, devname) == 0) {
+                        available = TRUE;
+                        break;
+                    }
+                }
+                pa_xfree(devname);
+            } else if ((devname = get_name(name, "source:"))) {
+                pa_source* s;
+                PA_IDXSET_FOREACH(s, u->core->sources, idx) {
+                    if (strcmp(s->name, devname) == 0) {
+                        available = TRUE;
+                        break;
+                    }
+                }
+                pa_xfree(devname);
+            }
+
+            pa_tagstruct_puts(reply, name);
+            pa_tagstruct_puts(reply, e->description);
+            pa_tagstruct_puts(reply, e->icon);
+            pa_tagstruct_put_boolean(reply, available);
+            pa_tagstruct_putu32(reply, NUM_ROLES);
+
+            for (uint32_t i = ROLE_NONE; i < NUM_ROLES; ++i) {
+                pa_tagstruct_puts(reply, role_names[i]);
+                pa_tagstruct_putu32(reply, e->priority[i]);
+            }
+
+            pa_xfree(e);
+        }
+
+        pa_xfree(name);
+
+        key = next_key;
+      }
+
+      break;
+    }
+
+    case SUBCOMMAND_RENAME: {
+
+        struct entry *e;
+        const char *device, *description;
+
+        if (pa_tagstruct_gets(t, &device) < 0 ||
+          pa_tagstruct_gets(t, &description) < 0)
+          goto fail;
+
+        if (!device || !*device || !description || !*description)
+          goto fail;
+
+        if ((e = read_entry(u, device))) {
+            pa_datum key, data;
+
+            pa_strlcpy(e->description, description, sizeof(e->description));
+            e->user_set_description = TRUE;
+
+            key.data = (char *) device;
+            key.size = strlen(device);
+
+            data.data = e;
+            data.size = sizeof(*e);
+
+            if (pa_database_set(u->database, &key, &data, TRUE) == 0) {
+                apply_entry(u, device, e);
+
+                trigger_save(u);
+            }
+            else
+                pa_log_warn("Could not save device");
+
+            pa_xfree(e);
+        }
+        else
+            pa_log_warn("Could not rename device %s, no entry in database", device);
+
+      break;
+    }
+
+    case SUBCOMMAND_DELETE:
+
+      while (!pa_tagstruct_eof(t)) {
+        const char *name;
+        pa_datum key;
+
+        if (pa_tagstruct_gets(t, &name) < 0)
+          goto fail;
+
+        key.data = (char*) name;
+        key.size = strlen(name);
+
+        /** @todo: Reindex the priorities */
+        pa_database_unset(u->database, &key);
+      }
+
+      trigger_save(u);
+
+      break;
+
+    case SUBCOMMAND_ROLE_DEVICE_PRIORITY_ROUTING: {
+
+        pa_bool_t enable;
+
+        if (pa_tagstruct_get_boolean(t, &enable) < 0)
+            goto fail;
+
+        if ((u->do_routing = enable)) {
+            /* Update our caches */
+            update_highest_priority_device_indexes(u, "sink:", NULL);
+            update_highest_priority_device_indexes(u, "source:", NULL);
+        }
+
+        break;
+    }
+
+    case SUBCOMMAND_REORDER: {
+
+        const char *role;
+        struct entry *e;
+        uint32_t role_index, n_devices;
+        pa_datum key, data;
+        pa_bool_t done, sink_mode = TRUE;
+        struct device_t { uint32_t prio; char *device; };
+        struct device_t *device;
+        struct device_t **devices;
+        uint32_t i, idx, offset;
+        pa_hashmap *h;
+        /*void *state;*/
+        pa_bool_t first;
+
+        if (pa_tagstruct_gets(t, &role) < 0 ||
+            pa_tagstruct_getu32(t, &n_devices) < 0 ||
+            n_devices < 1)
+            goto fail;
+
+        if (PA_INVALID_INDEX == (role_index = get_role_index(role)))
+           goto fail;
+
+        /* Cycle through the devices given and make sure they exist */
+        h = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
+        first = TRUE;
+        idx = 0;
+        for (i = 0; i < n_devices; ++i) {
+            const char *s;
+            if (pa_tagstruct_gets(t, &s) < 0) {
+                while ((device = pa_hashmap_steal_first(h))) {
+                    pa_xfree(device->device);
+                    pa_xfree(device);
+                }
+
+                pa_hashmap_free(h, NULL, NULL);
+                pa_log_error("Protocol error on reorder");
+                goto fail;
+            }
+
+            /* Ensure this is a valid entry */
+            if (!(e = read_entry(u, s))) {
+                while ((device = pa_hashmap_steal_first(h))) {
+                    pa_xfree(device->device);
+                    pa_xfree(device);
+                }
+
+                pa_hashmap_free(h, NULL, NULL);
+                pa_log_error("Client specified an unknown device in it's reorder list.");
+                goto fail;
+            }
+            pa_xfree(e);
+
+            if (first) {
+                first = FALSE;
+                sink_mode = (0 == strncmp("sink:", s, 5));
+            } else if ((sink_mode && 0 != strncmp("sink:", s, 5))
+                       || (!sink_mode && 0 != strncmp("source:", s, 7)))
+            {
+                while ((device = pa_hashmap_steal_first(h))) {
+                    pa_xfree(device->device);
+                    pa_xfree(device);
+                }
+
+                pa_hashmap_free(h, NULL, NULL);
+                pa_log_error("Attempted to reorder mixed devices (sinks and sources)");
+                goto fail;
+            }
+
+            /* Add the device to our hashmap. If it's alredy in it, free it now and carry on */
+            device = pa_xnew(struct device_t, 1);
+            device->device = pa_xstrdup(s);
+            if (pa_hashmap_put(h, device->device, device) == 0) {
+                device->prio = idx;
+                idx++;
+            } else {
+                pa_xfree(device->device);
+                pa_xfree(device);
+            }
+        }
+
+        /*pa_log_debug("Hashmap contents (received from client)");
+        PA_HASHMAP_FOREACH(device, h, state) {
+            pa_log_debug("  - %s (%d)", device->device, device->prio);
+        }*/
+
+        /* Now cycle through our list and add all the devices.
+           This has the effect of addign in any in our DB,
+           not specified in the device list (and thus will be
+           tacked on at the end) */
+        offset = idx;
+        done = !pa_database_first(u->database, &key, NULL);
+
+        while (!done && idx < 256) {
+            pa_datum next_key;
+
+            done = !pa_database_next(u->database, &key, &next_key, NULL);
+
+            device = pa_xnew(struct device_t, 1);
+            device->device = pa_xstrndup(key.data, key.size);
+            if ((sink_mode && 0 == strncmp("sink:", device->device, 5))
+                || (!sink_mode && 0 == strncmp("source:", device->device, 7))) {
+
+                /* Add the device to our hashmap. If it's alredy in it, free it now and carry on */
+                if (pa_hashmap_put(h, device->device, device) == 0
+                    && (e = read_entry(u, device->device))) {
+                    /* We add offset on to the existing priorirty so that when we order, the
+                       existing entries are always lower priority than the new ones. */
+                    device->prio = (offset + e->priority[role_index]);
+                    pa_xfree(e);
+                }
+                else {
+                    pa_xfree(device->device);
+                    pa_xfree(device);
+                }
+            } else {
+                pa_xfree(device->device);
+                pa_xfree(device);
+            }
+
+            pa_datum_free(&key);
+
+            key = next_key;
+        }
+
+        /*pa_log_debug("Hashmap contents (combined with database)");
+        PA_HASHMAP_FOREACH(device, h, state) {
+            pa_log_debug("  - %s (%d)", device->device, device->prio);
+        }*/
+
+        /* Now we put all the entries in a simple list for sorting it. */
+        n_devices = pa_hashmap_size(h);
+        devices = pa_xnew(struct device_t *,  n_devices);
+        idx = 0;
+        while ((device = pa_hashmap_steal_first(h))) {
+            devices[idx++] = device;
+        }
+        pa_hashmap_free(h, NULL, NULL);
+
+        /* Simple bubble sort */
+        for (i = 0; i < n_devices; ++i) {
+            for (uint32_t j = i; j < n_devices; ++j) {
+                if (devices[i]->prio > devices[j]->prio) {
+                    struct device_t *tmp;
+                    tmp = devices[i];
+                    devices[i] = devices[j];
+                    devices[j] = tmp;
+                }
+            }
+        }
+
+        /*pa_log_debug("Sorted device list");
+        for (i = 0; i < n_devices; ++i) {
+            pa_log_debug("  - %s (%d)", devices[i]->device, devices[i]->prio);
+        }*/
+
+        /* Go through in order and write the new entry and cleanup our own list */
+        idx = 1;
+        first = TRUE;
+        for (i = 0; i < n_devices; ++i) {
+            if ((e = read_entry(u, devices[i]->device))) {
+                if (e->priority[role_index] == idx)
+                    idx++;
+                else {
+                    e->priority[role_index] = idx;
+
+                    key.data = (char *) devices[i]->device;
+                    key.size = strlen(devices[i]->device);
+
+                    data.data = e;
+                    data.size = sizeof(*e);
+
+                    if (pa_database_set(u->database, &key, &data, TRUE) == 0) {
+                        first = FALSE;
+                        idx++;
+                    }
+                }
+
+                pa_xfree(e);
+            }
+            pa_xfree(devices[i]->device);
+            pa_xfree(devices[i]);
+        }
+
+        if (!first) {
+            trigger_save(u);
+
+            if (sink_mode)
+                route_sink_inputs(u, NULL);
+            else
+                route_source_outputs(u, NULL);
+        }
+
+        break;
+    }
+
+    case SUBCOMMAND_SUBSCRIBE: {
+
+      pa_bool_t enabled;
+
+      if (pa_tagstruct_get_boolean(t, &enabled) < 0 ||
+        !pa_tagstruct_eof(t))
+        goto fail;
+
+      if (enabled)
+        pa_idxset_put(u->subscribed, c, NULL);
+      else
+        pa_idxset_remove_by_data(u->subscribed, c, NULL);
+
+      break;
+    }
+
+    default:
+      goto fail;
+  }
+
+  pa_pstream_send_tagstruct(pa_native_connection_get_pstream(c), reply);
+  return 0;
+
+  fail:
+
+  if (reply)
+    pa_tagstruct_free(reply);
+
+  return -1;
+}
+
+static pa_hook_result_t connection_unlink_hook_cb(pa_native_protocol *p, pa_native_connection *c, struct userdata *u) {
+    pa_assert(p);
+    pa_assert(c);
+    pa_assert(u);
+
+    pa_idxset_remove_by_data(u->subscribed, c, NULL);
+    return PA_HOOK_OK;
+}
+
+int pa__init(pa_module*m) {
+    pa_modargs *ma = NULL;
+    struct userdata *u;
+    char *fname;
+    pa_sink *sink;
+    pa_source *source;
+    uint32_t idx;
+    pa_bool_t do_routing = FALSE, on_hotplug = TRUE, on_rescue = TRUE;
+
+    pa_assert(m);
+
+    if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+        pa_log("Failed to parse module arguments");
+        goto fail;
+    }
+
+    if (pa_modargs_get_value_boolean(ma, "do_routing", &do_routing) < 0 ||
+        pa_modargs_get_value_boolean(ma, "on_hotplug", &on_hotplug) < 0 ||
+        pa_modargs_get_value_boolean(ma, "on_rescue", &on_rescue) < 0) {
+        pa_log("on_hotplug= and on_rescue= expect boolean arguments");
+        goto fail;
+    }
+
+    m->userdata = u = pa_xnew0(struct userdata, 1);
+    u->core = m->core;
+    u->module = m;
+    u->do_routing = do_routing;
+    u->on_hotplug = on_hotplug;
+    u->on_rescue = on_rescue;
+    u->subscribed = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
+
+    u->protocol = pa_native_protocol_get(m->core);
+    pa_native_protocol_install_ext(u->protocol, m, extension_cb);
+
+    u->connection_unlink_hook_slot = pa_hook_connect(&pa_native_protocol_hooks(u->protocol)[PA_NATIVE_HOOK_CONNECTION_UNLINK], PA_HOOK_NORMAL, (pa_hook_cb_t) connection_unlink_hook_cb, u);
+
+    u->subscription = pa_subscription_new(m->core, PA_SUBSCRIPTION_MASK_SINK|PA_SUBSCRIPTION_MASK_SOURCE|PA_SUBSCRIPTION_MASK_SINK_INPUT|PA_SUBSCRIPTION_MASK_SOURCE_OUTPUT, subscribe_callback, u);
+
+    /* Used to handle device description management */
+    u->sink_new_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_NEW], PA_HOOK_EARLY, (pa_hook_cb_t) sink_new_hook_callback, u);
+    u->source_new_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_NEW], PA_HOOK_EARLY, (pa_hook_cb_t) source_new_hook_callback, u);
+
+    /* The following slots are used to deal with routing */
+    /* A little bit later than module-stream-restore, but before module-intended-roles */
+    u->sink_input_new_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_NEW], PA_HOOK_EARLY+5, (pa_hook_cb_t) sink_input_new_hook_callback, u);
+    u->source_output_new_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_NEW], PA_HOOK_EARLY+5, (pa_hook_cb_t) source_output_new_hook_callback, u);
+
+    if (on_hotplug) {
+        /* A little bit later than module-stream-restore, but before module-intended-roles */
+        u->sink_put_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_PUT], PA_HOOK_LATE+5, (pa_hook_cb_t) sink_put_hook_callback, u);
+        u->source_put_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_PUT], PA_HOOK_LATE+5, (pa_hook_cb_t) source_put_hook_callback, u);
+    }
+
+    if (on_rescue) {
+        /* A little bit later than module-stream-restore, a little bit earlier than module-intended-roles, module-rescue-streams, ... */
+        u->sink_unlink_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_UNLINK], PA_HOOK_LATE+5, (pa_hook_cb_t) sink_unlink_hook_callback, u);
+        u->source_unlink_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], PA_HOOK_LATE+5, (pa_hook_cb_t) source_unlink_hook_callback, u);
+    }
+
+    if (!(fname = pa_state_path("device-manager", TRUE)))
+        goto fail;
+
+    if (!(u->database = pa_database_open(fname, TRUE))) {
+        pa_log("Failed to open volume database '%s': %s", fname, pa_cstrerror(errno));
+        pa_xfree(fname);
+        goto fail;
+    }
+
+    pa_log_info("Sucessfully opened database file '%s'.", fname);
+    pa_xfree(fname);
+
+    /* We cycle over all the available sinks so that they are added to our database if they are not in it yet */
+    PA_IDXSET_FOREACH(sink, m->core->sinks, idx)
+        subscribe_callback(m->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_NEW, sink->index, u);
+
+    PA_IDXSET_FOREACH(source, m->core->sources, idx)
+        subscribe_callback(m->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_NEW, source->index, u);
+
+    /* Perform the routing (if it's enabled) which will update our priority list cache too */
+    for (uint32_t i = 0; i < NUM_ROLES; ++i) {
+        u->preferred_sinks[i] = u->preferred_sources[i] = PA_INVALID_INDEX;
+    }
+
+    route_sink_inputs(u, NULL);
+    route_source_outputs(u, NULL);
+
+#ifdef DUMP_DATABASE
+    dump_database(u);
+#endif
+
+    pa_modargs_free(ma);
+    return 0;
+
+fail:
+    pa__done(m);
+
+    if (ma)
+        pa_modargs_free(ma);
+
+    return  -1;
+}
+
+void pa__done(pa_module*m) {
+    struct userdata* u;
+
+    pa_assert(m);
+
+    if (!(u = m->userdata))
+        return;
+
+    if (u->subscription)
+        pa_subscription_free(u->subscription);
+
+    if (u->sink_new_hook_slot)
+        pa_hook_slot_free(u->sink_new_hook_slot);
+    if (u->source_new_hook_slot)
+        pa_hook_slot_free(u->source_new_hook_slot);
+
+    if (u->sink_input_new_hook_slot)
+        pa_hook_slot_free(u->sink_input_new_hook_slot);
+    if (u->source_output_new_hook_slot)
+        pa_hook_slot_free(u->source_output_new_hook_slot);
+
+    if (u->sink_put_hook_slot)
+        pa_hook_slot_free(u->sink_put_hook_slot);
+    if (u->source_put_hook_slot)
+        pa_hook_slot_free(u->source_put_hook_slot);
+
+    if (u->sink_unlink_hook_slot)
+        pa_hook_slot_free(u->sink_unlink_hook_slot);
+    if (u->source_unlink_hook_slot)
+        pa_hook_slot_free(u->source_unlink_hook_slot);
+
+    if (u->save_time_event)
+        u->core->mainloop->time_free(u->save_time_event);
+
+    if (u->database)
+        pa_database_close(u->database);
+
+    if (u->protocol) {
+        pa_native_protocol_remove_ext(u->protocol, m);
+        pa_native_protocol_unref(u->protocol);
+    }
+
+    if (u->subscribed)
+        pa_idxset_free(u->subscribed, NULL, NULL);
+
+    pa_xfree(u);
+}
diff --git a/src/modules/module-stream-restore.c b/src/modules/module-stream-restore.c
index 1e2dc4df..788f458b 100644
--- a/src/modules/module-stream-restore.c
+++ b/src/modules/module-stream-restore.c
@@ -1122,8 +1122,8 @@ static pa_bool_t entries_equal(const struct entry *a, const struct entry *b) {
 
 static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
     struct userdata *u = userdata;
-    struct entry entry, *old;
-    char *name;
+    struct entry entry, *old = NULL;
+    char *name = NULL;
     pa_datum key, data;
 
     /* These are only used when D-Bus is enabled, but in order to reduce ifdef
diff --git a/src/pulse/context.c b/src/pulse/context.c
index 23ae30ce..7468d0a9 100644
--- a/src/pulse/context.c
+++ b/src/pulse/context.c
@@ -128,6 +128,9 @@ static void reset_callbacks(pa_context *c) {
     c->event_callback = NULL;
     c->event_userdata = NULL;
 
+    c->ext_device_manager.callback = NULL;
+    c->ext_device_manager.userdata = NULL;
+
     c->ext_stream_restore.callback = NULL;
     c->ext_stream_restore.userdata = NULL;
 }
@@ -1434,6 +1437,8 @@ void pa_command_extension(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_t
 
     if (!strcmp(name, "module-stream-restore"))
         pa_ext_stream_restore_command(c, tag, t);
+    else if (!strcmp(name, "module-device-manager"))
+        pa_ext_device_manager_command(c, tag, t);
     else
         pa_log(_("Received message for unknown extension '%s'"), name);
 
diff --git a/src/pulse/ext-device-manager.c b/src/pulse/ext-device-manager.c
new file mode 100644
index 00000000..138ed838
--- /dev/null
+++ b/src/pulse/ext-device-manager.c
@@ -0,0 +1,440 @@
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2008 Lennart Poettering
+  Copyright 2009 Colin Guthrie
+
+  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 <pulse/context.h>
+#include <pulse/gccmacro.h>
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/macro.h>
+#include <pulsecore/pstream-util.h>
+
+#include "internal.h"
+#include "operation.h"
+#include "fork-detect.h"
+
+#include "ext-device-manager.h"
+
+enum {
+    SUBCOMMAND_TEST,
+    SUBCOMMAND_READ,
+    SUBCOMMAND_RENAME,
+    SUBCOMMAND_DELETE,
+    SUBCOMMAND_ROLE_DEVICE_PRIORITY_ROUTING,
+    SUBCOMMAND_REORDER,
+    SUBCOMMAND_SUBSCRIBE,
+    SUBCOMMAND_EVENT
+};
+
+static void ext_device_manager_test_cb(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
+    pa_operation *o = userdata;
+    uint32_t version = PA_INVALID_INDEX;
+
+    pa_assert(pd);
+    pa_assert(o);
+    pa_assert(PA_REFCNT_VALUE(o) >= 1);
+
+    if (!o->context)
+        goto finish;
+
+    if (command != PA_COMMAND_REPLY) {
+        if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
+            goto finish;
+
+    } else if (pa_tagstruct_getu32(t, &version) < 0 ||
+               !pa_tagstruct_eof(t)) {
+
+        pa_context_fail(o->context, PA_ERR_PROTOCOL);
+        goto finish;
+    }
+
+    if (o->callback) {
+        pa_ext_device_manager_test_cb_t cb = (pa_ext_device_manager_test_cb_t) o->callback;
+        cb(o->context, version, o->userdata);
+    }
+
+finish:
+    pa_operation_done(o);
+    pa_operation_unref(o);
+}
+
+pa_operation *pa_ext_device_manager_test(
+        pa_context *c,
+        pa_ext_device_manager_test_cb_t cb,
+        void *userdata) {
+
+    uint32_t tag;
+    pa_operation *o;
+    pa_tagstruct *t;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, "module-device-manager");
+    pa_tagstruct_putu32(t, SUBCOMMAND_TEST);
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_device_manager_test_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+}
+
+static void ext_device_manager_read_cb(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
+    pa_operation *o = userdata;
+    int eol = 1;
+
+    pa_assert(pd);
+    pa_assert(o);
+    pa_assert(PA_REFCNT_VALUE(o) >= 1);
+
+    if (!o->context)
+        goto finish;
+
+    if (command != PA_COMMAND_REPLY) {
+        if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
+            goto finish;
+
+        eol = -1;
+    } else {
+
+        while (!pa_tagstruct_eof(t)) {
+            pa_ext_device_manager_info i;
+            pa_bool_t available;
+
+            memset(&i, 0, sizeof(i));
+            available = FALSE;
+
+            if (pa_tagstruct_gets(t, &i.name) < 0 ||
+                pa_tagstruct_gets(t, &i.description) < 0 ||
+                pa_tagstruct_gets(t, &i.icon) < 0 ||
+                pa_tagstruct_get_boolean(t, &available) < 0 ||
+                pa_tagstruct_getu32(t, &i.n_role_priorities) < 0) {
+
+                pa_context_fail(o->context, PA_ERR_PROTOCOL);
+                goto finish;
+            }
+            i.available = (uint8_t)available;
+
+            if (i.n_role_priorities > 0) {
+                uint32_t j;
+                i.role_priorities = pa_xnew0(pa_ext_device_manager_role_priority_info, i.n_role_priorities+1);
+
+                for (j = 0; j < i.n_role_priorities; j++) {
+
+                    if (pa_tagstruct_gets(t, &i.role_priorities[j].role) < 0 ||
+                        pa_tagstruct_getu32(t, &i.role_priorities[j].priority) < 0) {
+
+                        pa_context_fail(o->context, PA_ERR_PROTOCOL);
+                        pa_xfree(i.role_priorities);
+                        goto finish;
+                    }
+                }
+
+                /* Terminate with an extra NULL entry, just to make sure */
+                i.role_priorities[j].role = NULL;
+                i.role_priorities[j].priority = 0;
+            }
+
+            if (o->callback) {
+                pa_ext_device_manager_read_cb_t cb = (pa_ext_device_manager_read_cb_t) o->callback;
+                cb(o->context, &i, 0, o->userdata);
+            }
+
+            pa_xfree(i.role_priorities);
+        }
+    }
+
+    if (o->callback) {
+        pa_ext_device_manager_read_cb_t cb = (pa_ext_device_manager_read_cb_t) o->callback;
+        cb(o->context, NULL, eol, o->userdata);
+    }
+
+finish:
+    pa_operation_done(o);
+    pa_operation_unref(o);
+}
+
+pa_operation *pa_ext_device_manager_read(
+        pa_context *c,
+        pa_ext_device_manager_read_cb_t cb,
+        void *userdata) {
+
+    uint32_t tag;
+    pa_operation *o;
+    pa_tagstruct *t;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, "module-device-manager");
+    pa_tagstruct_putu32(t, SUBCOMMAND_READ);
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_device_manager_read_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+}
+
+pa_operation *pa_ext_device_manager_set_device_description(
+        pa_context *c,
+        const char* device,
+        const char* description,
+        pa_context_success_cb_t cb,
+        void *userdata) {
+
+    uint32_t tag;
+    pa_operation *o = NULL;
+    pa_tagstruct *t = NULL;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+    pa_assert(device);
+    pa_assert(description);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, "module-device-manager");
+    pa_tagstruct_putu32(t, SUBCOMMAND_RENAME);
+
+    pa_tagstruct_puts(t, device);
+    pa_tagstruct_puts(t, description);
+
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+}
+
+pa_operation *pa_ext_device_manager_delete(
+        pa_context *c,
+        const char *const s[],
+        pa_context_success_cb_t cb,
+        void *userdata) {
+
+    uint32_t tag;
+    pa_operation *o = NULL;
+    pa_tagstruct *t = NULL;
+    const char *const *k;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+    pa_assert(s);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, "module-device-manager");
+    pa_tagstruct_putu32(t, SUBCOMMAND_DELETE);
+
+    for (k = s; *k; k++) {
+        if (!*k || !**k)
+            goto fail;
+
+        pa_tagstruct_puts(t, *k);
+    }
+
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+
+fail:
+    if (o) {
+        pa_operation_cancel(o);
+        pa_operation_unref(o);
+    }
+
+    if (t)
+        pa_tagstruct_free(t);
+
+    pa_context_set_error(c, PA_ERR_INVALID);
+    return NULL;
+}
+
+pa_operation *pa_ext_device_manager_enable_role_device_priority_routing(
+        pa_context *c,
+        int enable,
+        pa_context_success_cb_t cb,
+        void *userdata) {
+
+    uint32_t tag;
+    pa_operation *o = NULL;
+    pa_tagstruct *t = NULL;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, "module-device-manager");
+    pa_tagstruct_putu32(t, SUBCOMMAND_ROLE_DEVICE_PRIORITY_ROUTING);
+    pa_tagstruct_put_boolean(t, !!enable);
+
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+}
+
+pa_operation *pa_ext_device_manager_reorder_devices_for_role(
+        pa_context *c,
+        const char* role,
+        const char** devices,
+        pa_context_success_cb_t cb,
+        void *userdata) {
+
+    uint32_t tag, i;
+    pa_operation *o = NULL;
+    pa_tagstruct *t = NULL;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
+
+    pa_assert(role);
+    pa_assert(devices);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, "module-device-manager");
+    pa_tagstruct_putu32(t, SUBCOMMAND_REORDER);
+    pa_tagstruct_puts(t, role);
+
+    i = 0; while (devices[i]) i++;
+    pa_tagstruct_putu32(t, i);
+
+    i = 0;
+    while (devices[i])
+        pa_tagstruct_puts(t, devices[i++]);
+
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+}
+
+pa_operation *pa_ext_device_manager_subscribe(
+        pa_context *c,
+        int enable,
+        pa_context_success_cb_t cb,
+        void *userdata) {
+
+    uint32_t tag;
+    pa_operation *o;
+    pa_tagstruct *t;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, "module-device-manager");
+    pa_tagstruct_putu32(t, SUBCOMMAND_SUBSCRIBE);
+    pa_tagstruct_put_boolean(t, enable);
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+}
+
+void pa_ext_device_manager_set_subscribe_cb(
+        pa_context *c,
+        pa_ext_device_manager_subscribe_cb_t cb,
+        void *userdata) {
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    if (pa_detect_fork())
+        return;
+
+    c->ext_device_manager.callback = cb;
+    c->ext_device_manager.userdata = userdata;
+}
+
+void pa_ext_device_manager_command(pa_context *c, uint32_t tag, pa_tagstruct *t) {
+    uint32_t subcommand;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+    pa_assert(t);
+
+    if (pa_tagstruct_getu32(t, &subcommand) < 0 ||
+        !pa_tagstruct_eof(t)) {
+
+        pa_context_fail(c, PA_ERR_PROTOCOL);
+        return;
+    }
+
+    if (subcommand != SUBCOMMAND_EVENT) {
+        pa_context_fail(c, PA_ERR_PROTOCOL);
+        return;
+    }
+
+    if (c->ext_device_manager.callback)
+        c->ext_device_manager.callback(c, c->ext_device_manager.userdata);
+}
diff --git a/src/pulse/ext-device-manager.h b/src/pulse/ext-device-manager.h
new file mode 100644
index 00000000..13538f0c
--- /dev/null
+++ b/src/pulse/ext-device-manager.h
@@ -0,0 +1,128 @@
+#ifndef foopulseextdevicemanagerhfoo
+#define foopulseextdevicemanagerhfoo
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2008 Lennart Poettering
+  Copyright 2009 Colin Guthrie
+
+  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.
+***/
+
+#include <pulse/context.h>
+#include <pulse/version.h>
+
+/** \file
+ *
+ * Routines for controlling module-device-manager
+ */
+
+PA_C_DECL_BEGIN
+
+typedef struct pa_ext_device_manager_role_priority_info {
+    const char *role;
+    uint32_t priority;
+} pa_ext_device_manager_role_priority_info;
+
+/** Stores information about one device in the device database that is
+ * maintained by module-device-manager. \since 0.9.19 */
+typedef struct pa_ext_device_manager_info {
+    const char *name;            /**< Identifier string of the device. A string like "sink:" or similar followed by the name of the device. */
+    const char *description;     /**< The description of the device when it was last seen, if applicable and saved */
+    const char *icon;            /**< The icon given to the device */
+    uint8_t available;           /**< Is the device currently available? */
+    uint32_t n_role_priorities;  /**< How many role priorities do we have? */
+    pa_ext_device_manager_role_priority_info *role_priorities; /**< An array of role priority structures or NULL */
+} pa_ext_device_manager_info;
+
+/** Callback prototype for pa_ext_device_manager_test(). \since 0.9.19 */
+typedef void (*pa_ext_device_manager_test_cb_t)(
+        pa_context *c,
+        uint32_t version,
+        void *userdata);
+
+/** Test if this extension module is available in the server. \since 0.9.19 */
+pa_operation *pa_ext_device_manager_test(
+        pa_context *c,
+        pa_ext_device_manager_test_cb_t cb,
+        void *userdata);
+
+/** Callback prototype for pa_ext_device_manager_read(). \since 0.9.19 */
+typedef void (*pa_ext_device_manager_read_cb_t)(
+        pa_context *c,
+        const pa_ext_device_manager_info *info,
+        int eol,
+        void *userdata);
+
+/** Read all entries from the device database. \since 0.9.19 */
+pa_operation *pa_ext_device_manager_read(
+        pa_context *c,
+        pa_ext_device_manager_read_cb_t cb,
+        void *userdata);
+
+/** Sets the description for a device. \since 0.9.19 */
+pa_operation *pa_ext_device_manager_set_device_description(
+        pa_context *c,
+        const char* device,
+        const char* description,
+        pa_context_success_cb_t cb,
+        void *userdata);
+
+/** Delete entries from the device database. \since 0.9.19 */
+pa_operation *pa_ext_device_manager_delete(
+        pa_context *c,
+        const char *const s[],
+        pa_context_success_cb_t cb,
+        void *userdata);
+
+/** Enable the role-based device-priority routing mode. \since 0.9.19 */
+pa_operation *pa_ext_device_manager_enable_role_device_priority_routing(
+        pa_context *c,
+        int enable,
+        pa_context_success_cb_t cb,
+        void *userdata);
+
+/** Prefer a given device in the priority list. \since 0.9.19 */
+pa_operation *pa_ext_device_manager_reorder_devices_for_role(
+        pa_context *c,
+        const char* role,
+        const char** devices,
+        pa_context_success_cb_t cb,
+        void *userdata);
+
+/** Subscribe to changes in the device database. \since 0.9.19 */
+pa_operation *pa_ext_device_manager_subscribe(
+        pa_context *c,
+        int enable,
+        pa_context_success_cb_t cb,
+        void *userdata);
+
+/** Callback prototype for pa_ext_device_manager_set_subscribe_cb(). \since 0.9.19 */
+typedef void (*pa_ext_device_manager_subscribe_cb_t)(
+        pa_context *c,
+        void *userdata);
+
+/** Set the subscription callback that is called when
+ * pa_ext_device_manager_subscribe() was called. \since 0.9.19 */
+void pa_ext_device_manager_set_subscribe_cb(
+        pa_context *c,
+        pa_ext_device_manager_subscribe_cb_t cb,
+        void *userdata);
+
+PA_C_DECL_END
+
+#endif
diff --git a/src/pulse/internal.h b/src/pulse/internal.h
index e069c9e9..b371bfc2 100644
--- a/src/pulse/internal.h
+++ b/src/pulse/internal.h
@@ -28,6 +28,7 @@
 #include <pulse/stream.h>
 #include <pulse/operation.h>
 #include <pulse/subscribe.h>
+#include <pulse/ext-device-manager.h>
 #include <pulse/ext-stream-restore.h>
 
 #include <pulsecore/socket-client.h>
@@ -102,6 +103,10 @@ struct pa_context {
 
     /* Extension specific data */
     struct {
+        pa_ext_device_manager_subscribe_cb_t callback;
+        void *userdata;
+    } ext_device_manager;
+    struct {
         pa_ext_stream_restore_subscribe_cb_t callback;
         void *userdata;
     } ext_stream_restore;
@@ -283,6 +288,7 @@ pa_tagstruct *pa_tagstruct_command(pa_context *c, uint32_t command, uint32_t *ta
 #define PA_FAIL_RETURN_NULL(context, error)     \
     PA_FAIL_RETURN_ANY(context, error, NULL)
 
+void pa_ext_device_manager_command(pa_context *c, uint32_t tag, pa_tagstruct *t);
 void pa_ext_stream_restore_command(pa_context *c, uint32_t tag, pa_tagstruct *t);
 
 pa_bool_t pa_mainloop_is_our_api(pa_mainloop_api*m);