Initial commit

Change-Id: Ic974941bdd30309b4adb72b7a05959332750210b
Signed-off-by: Manuel Bachmann <manuel.bachmann@iot.bzh>

27 files changed, 3784 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..7156d4f
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,48 @@
+PROJECT(agl-audio-plugin C)
+
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8.8)
+SET(CMAKE_BUILD_TYPE Debug)
+SET(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
+SET(PROJECT_NAME "AGL Audio Policy Plugin")
+SET(PROJECT_PRETTY_NAME "AGL Audio PulseAudio Policy Plugin")
+SET(PROJECT_DESCRIPTION "AGL PulseAudio plugin, forked from module-murphy-ivi")
+SET(PROJECT_VERSION "0.1")
+SET(PROJECT_URL "https://github.com/Tarnyko/sample-policy-plugin")
+
+INCLUDE(FindPkgConfig)
+INCLUDE(GNUInstallDirs)
+
+###########################################################################
+
+link_libraries(-Wl,--as-needed -Wl,--gc-sections)
+
+add_compile_options(-Wall -Wextra -Wconversion)
+add_compile_options(-Wno-unused-parameter -Wno-unused-variable -Wno-unused-but-set-variable)
+add_compile_options(-Wno-parentheses) # this syntax is heavily used
+add_compile_options(-Wno-sign-compare -Wno-sign-conversion)
+add_compile_options(-Werror=maybe-uninitialized)
+add_compile_options(-Werror=implicit-function-declaration)
+add_compile_options(-ffunction-sections -fdata-sections)
+
+###########################################################################
+
+PKG_CHECK_MODULES(pulseaudio-module-devel REQUIRED pulseaudio-module-devel)
+
+ADD_DEFINITIONS(${pulseaudio-module-devel_CFLAGS})
+SET(include_dirs ${INCLUDE_DIRS} ${pulseaudio-module-devel_INCLUDE_DIRS})
+SET(link_libraries ${LINK_LIBRARIES} ${pulseaudio-module-devel_LIBRARIES})
+STRING(REGEX REPLACE ";" " " link_flags "${pulseaudio-module-devel_LDFLAGS}" "")
+
+SET(plugin_install_dir ${CMAKE_INSTALL_LIBDIR}/pulse-6.0/modules)
+
+############################################################
+
+ADD_LIBRARY(agl-audio-plugin MODULE module.c audiomgr.c classify.c discover.c loopback.c node.c router.c socketif.c switch.c tracker.c utils.c zone.c)
+INCLUDE_DIRECTORIES(${include_dirs})
+TARGET_LINK_LIBRARIES(agl-audio-plugin ${link_libraries})
+SET_TARGET_PROPERTIES(agl-audio-plugin PROPERTIES PREFIX ""
+                                           LINK_FLAGS "${link_flags} -Wl,-rpath=${plugin_install_dir}")
+
+INSTALL(TARGETS agl-audio-plugin
+        LIBRARY DESTINATION ${plugin_install_dir})
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..2d2d780
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,510 @@
+
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diff --git a/audiomgr.c b/audiomgr.c
new file mode 100644
index 0000000..138d9f1
--- /dev/null
+++ b/audiomgr.c
@@ -0,0 +1,82 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#include "audiomgr.h"
+
+#define DS_DOWN 255
+
+typedef struct {
+	const char *name;
+	uint16_t    id;
+	uint16_t    state;
+} domain_t;
+
+typedef struct {
+	uint16_t    fromidx;
+	uint16_t    toidx;
+	uint32_t    channels;
+} link_t;
+
+typedef struct {
+	int          maxlink;
+	int          nlink;
+	link_t      *links;
+} routes_t;
+
+struct pa_audiomgr {
+	domain_t      domain;
+	pa_hashmap   *nodes;        /**< nodes ie. sinks and sources */
+	pa_hashmap   *conns;        /**< connections */
+	routes_t      defrts;       /**< default routes */
+};
+
+struct pa_audiomgr *pa_audiomgr_init (struct userdata *u)
+{
+	pa_audiomgr *am;
+
+	pa_assert (u);
+
+	am = pa_xnew0 (pa_audiomgr, 1);
+	am->domain.id = AM_ID_INVALID;
+	am->domain.state = DS_DOWN;
+	am->nodes = pa_hashmap_new (pa_idxset_trivial_hash_func,
+		                    pa_idxset_trivial_compare_func);
+	am->conns = pa_hashmap_new (pa_idxset_trivial_hash_func,
+		                    pa_idxset_trivial_compare_func);
+	return am;
+}
+
+void pa_audiomgr_done (struct userdata *u)
+{
+	pa_audiomgr *am;
+
+	if (u && (am = u->audiomgr)) {
+		//if (u->routerif && am->domain.id != AM_ID_INVALID)
+		//	pa_routerif_unregister_domain (u, am->domain.id);
+
+		pa_hashmap_free (am->nodes);
+		pa_hashmap_free (am->conns);
+		pa_xfree ((void *)am->domain.name);
+		pa_xfree (am);
+		u->audiomgr = NULL;
+	}
+}
+
diff --git a/audiomgr.h b/audiomgr.h
new file mode 100644
index 0000000..c668a27
--- /dev/null
+++ b/audiomgr.h
@@ -0,0 +1,30 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#ifndef paaglaudiomgr
+#define paaglaudiomgr
+
+#include "userdata.h"
+
+pa_audiomgr *pa_audiomgr_init (struct userdata *);
+void pa_audiomgr_done (struct userdata *);
+
+#endif
diff --git a/classify.c b/classify.c
new file mode 100644
index 0000000..23d991d
--- /dev/null
+++ b/classify.c
@@ -0,0 +1,63 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#include <pulsecore/pulsecore-config.h> /* required for headers below */
+#include <pulsecore/core-util.h>        /* required for "pa_streq" */
+
+#include "classify.h"
+
+agl_node_type pa_classify_guess_stream_node_type (struct userdata *u,  pa_proplist *pl)
+{
+	agl_node_type type;
+	const char *role;
+
+	pa_assert (u);
+	pa_assert (pl);
+
+	role = pa_proplist_gets (pl, PA_PROP_MEDIA_ROLE);
+
+	if (!role)
+		type = agl_node_type_unknown;
+	else if (pa_streq (role, "radio"))
+		type = agl_radio;
+	else if (pa_streq (role, "music"))
+		type = agl_player;
+	else if (pa_streq (role, "navi"))
+		type = agl_navigator;
+	else if (pa_streq (role, "game"))
+		type = agl_game;
+	else if (pa_streq (role, "browser"))
+		type = agl_browser;
+	else if (pa_streq (role, "camera"))
+		type = agl_camera;
+	else if (pa_streq (role, "phone"))
+		type = agl_phone;
+	else if (pa_streq (role, "alert"))
+		type = agl_alert;
+	else if (pa_streq (role, "event"))
+		type = agl_event;
+	else if (pa_streq (role, "system"))
+		type = agl_system;
+	else
+		type = agl_player;
+
+	return type;
+}
diff --git a/classify.h b/classify.h
new file mode 100644
index 0000000..301a440
--- /dev/null
+++ b/classify.h
@@ -0,0 +1,8 @@
+#ifndef paaglclassify
+#define paaglclassify
+
+#include "userdata.h"
+
+agl_node_type pa_classify_guess_stream_node_type (struct userdata *,  pa_proplist *);
+
+#endif
diff --git a/discover.c b/discover.c
new file mode 100644
index 0000000..e6e8243
--- /dev/null
+++ b/discover.c
@@ -0,0 +1,758 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#include <pulsecore/pulsecore-config.h>	/* required for "core-util.h" */
+#include <pulsecore/core-util.h>	/* requred for "pa_streq" */
+#include <pulsecore/device-port.h>	/* required for "card.h" */
+#include <pulsecore/card.h>		/* for "struct pa_card", "struct pa_card_profile" */
+
+#include "discover.h"
+#include "node.h"
+#include "utils.h"
+#include "classify.h"
+#include "router.h"
+
+#define MAX_CARD_TARGET 4    /* max number of managed sinks/sources per card */
+#define MAX_NAME_LENGTH 256  /* max sink/source name length */
+
+static void handle_alsa_card (struct userdata *, pa_card *);
+static void handle_alsa_card_sinks_and_sources (struct userdata *, pa_card *, agl_node *, const char *);
+static void get_sinks_and_sources_from_profile (pa_card_profile *, char **, char **, char *, int);
+static char *get_sink_or_source_from_str (char **, int);
+static void handle_card_ports (struct userdata *, agl_node *, pa_card *, pa_card_profile *);
+static const char *node_key (struct userdata *, agl_direction,
+			     void *, pa_device_port *, char *, size_t);
+static agl_node *create_node (struct userdata *, agl_node *, bool *);
+
+struct pa_discover *pa_discover_init (struct userdata *u)
+{
+	pa_discover *discover = pa_xnew0 (pa_discover, 1);
+	discover->chmin = 1;
+	discover->chmax = 2;
+	discover->selected = true;
+	discover->nodes.byname = pa_hashmap_new (pa_idxset_string_hash_func,
+		                                 pa_idxset_string_compare_func);
+	discover->nodes.byptr  = pa_hashmap_new (pa_idxset_trivial_hash_func,
+		                                 pa_idxset_trivial_compare_func);
+
+	return discover;
+}
+
+void pa_discover_done (struct userdata *u)
+{
+	pa_discover *discover;
+	void *state;
+	agl_node *node;
+
+	if (u && (discover = u->discover)) {
+		/*PA_HASHMAP_FOREACH(node, discover->nodes.byname, state) {
+			agl_node_destroy(u, node);
+		}*/
+		pa_hashmap_free (discover->nodes.byname);
+		pa_hashmap_free (discover->nodes.byptr);
+		pa_xfree (discover);
+		u->discover = NULL;
+	}
+}
+
+void pa_discover_add_card (struct userdata *u, pa_card *card)
+{
+	const char *bus;
+
+	pa_assert(u);
+	pa_assert(card);
+
+	if (!(bus = pa_utils_get_card_bus (card))) {
+		pa_log_debug ("ignoring card '%s' due to lack of '%s' property",
+			      pa_utils_get_card_name (card), PA_PROP_DEVICE_BUS);
+		return;
+	}
+
+	if (pa_streq(bus, "pci") || pa_streq(bus, "usb") || pa_streq(bus, "platform")) {
+		pa_log_debug ("adding card '%s' thanks to its '%s' property",
+			      pa_utils_get_card_name (card), PA_PROP_DEVICE_BUS);
+		pa_log_debug ("card  type is '%s'", bus);
+		handle_alsa_card (u, card);
+		return;
+	}
+/* this never happens, because "pa_utils_get_card_bus()" never returns "bluetooth",
+ * but have this here as a reminder */
+#if 0
+	else if (pa_streq(bus, "bluetooth")) {
+		handle_bluetooth_card(u, card);
+		return;
+	}
+#endif
+
+	pa_log_debug ("ignoring card '%s' due to unsupported bus type '%s'",
+		      pa_utils_get_card_name (card), bus);
+}
+
+void pa_discover_remove_card (struct userdata *u, pa_card *card)
+{
+	const char  *bus;
+	pa_discover *discover;
+	agl_node    *node;
+	void        *state;
+
+	pa_assert (u);
+	pa_assert (card);
+	pa_assert_se (discover = u->discover);
+
+	if (!(bus = pa_utils_get_card_bus(card)))
+		bus = "<unknown>";
+
+	/*PA_HASHMAP_FOREACH(node, discover->nodes.byname, state) {
+	if (node->implement == agl_device &&
+	    node->pacard.index == card->index)
+	{
+		if (pa_streq(bus, "pci") || pa_streq(bus, "usb") || pa_streq(bus, "platform"))
+			agl_constrain_destroy (u, node->paname);
+
+		destroy_node(u, node);
+	}*/
+
+  /* this never happens, because "pa_utils_get_card_bus()" never returns "bluetooth",
+  * but have this here as a reminder */
+#if 0
+    if (pa_streq(bus, "bluetooth"))
+        agl_constrain_destroy(u, card->name);	
+#endif
+}
+
+void pa_discover_add_sink (struct userdata *u, pa_sink *sink, bool route)
+{
+	pa_core *core;
+	pa_discover *discover;
+	pa_module *module;
+	pa_card *card;
+	char kbf[256];
+	const char *key;
+	agl_node *node;
+	pa_source *null_source;
+
+	pa_assert (u);
+	pa_assert (sink);
+	pa_assert_se (core = u->core);
+	pa_assert_se (discover = u->discover);
+
+	module = sink->module;
+	card = sink->card;
+
+	if (card) {
+		 /* helper function verifying that sink direction is input/output */
+		key = node_key (u, agl_output, sink, NULL, kbf, sizeof(kbf));
+		if (!key) return;
+		pa_log_debug ("Sink key: %s", key);
+		node = pa_discover_find_node_by_key (u, key);
+		if (!node) {	/* ALWAYS NULL, IF CALL "handle_card_ports" FROM "handle_alsa_card" !!! */
+			if (u->state.profile)
+				pa_log_debug ("can't find node for sink (key '%s')", key);
+			else {	/* how do we get here ? not in initial setup */
+				u->state.sink = sink->index;
+				pa_log_debug ("BUG ! Did you call handle_card_ports() ?");
+			}
+			return;
+		}
+		pa_log_debug("node for '%s' found (key %s). Updating with sink data",
+			     node->paname, node->key);
+        	node->paidx = sink->index;
+		node->available = true;
+		pa_discover_add_node_to_ptr_hash (u, sink, node);
+
+#if 0
+		/* loopback part : it is a device node, use "module-loopback" to make its */
+		if (node->implement == agl_device) {
+			null_source = pa_utils_get_null_source (u);
+			if (!null_source) {
+				pa_log ("Can't load loopback module: no initial null source");
+				return;
+			}
+		}
+#endif
+	}
+}
+
+
+static void handle_alsa_card (struct userdata *u, pa_card *card)
+{
+	agl_node data;
+	const char *cnam;	/* PulseAudio name */
+	const char *cid;	/* short PulseAudio name (with "alsa_name." stripped) */
+	const char *alsanam;	/* ALSA name */
+	const char *udd;	/* managed by udev ("1" = yes) */
+
+	memset (&data, 0, sizeof(data));
+	data.zone = pa_utils_get_zone (card->proplist, NULL);
+	data.visible = true;
+	data.amid = AM_ID_INVALID;
+	data.implement = agl_device;		/* this node is a physical device */
+	data.paidx = PA_IDXSET_INVALID;
+	data.stamp = pa_utils_get_stamp ();	/* each time incremented by one */
+
+	cnam = pa_utils_get_card_name (card);	/* PulseAudio name */
+	cid = cnam + 10;			/* PulseAudio short name, with "alsa_card." prefix removed */
+	alsanam = pa_proplist_gets (card->proplist, "alsa.card_name"); /* ALSA name */
+	udd = pa_proplist_gets (card->proplist, "module-udev-detect.discovered");
+
+	data.amdescr = (char *)alsanam;
+	data.pacard.index = card->index;
+
+	pa_log_debug ("Sound card zone: %s", data.zone);
+	pa_log_debug ("Sound card stamp: %d", data.stamp);
+	pa_log_debug ("PulseAudio card name: %s", cnam);
+	pa_log_debug ("PulseAudio short card name: %s", cid);
+	pa_log_debug ("ALSA card name: %s", alsanam);
+	if (udd)
+		pa_log_debug ("ALSA card detected by udev: %s", udd);
+
+	/* WITH THE TIZEN MODULE, ONLY UDEV-MANAGED CARDS ARE ACCEPTED
+	 * NO MATTER, TREAT STATIC CARDS THE SAME WAY HERE.. */
+	/*if (!udd || (udd && !pa_streq(udd, "1"))
+		pa_log_debug ("Card not accepted, not managed by udev\n");*/
+
+	handle_alsa_card_sinks_and_sources (u, card, &data, cid);
+}
+                                              ;
+static void handle_alsa_card_sinks_and_sources (struct userdata *u, pa_card *card, agl_node *data, const char *cardid)
+{
+	pa_discover *discover; /* discovery restrictions (max channels...) */
+	pa_card_profile *prof;
+	void *state;
+	char *sinks[MAX_CARD_TARGET+1];	  /* discovered sinks array */
+	char *sources[MAX_CARD_TARGET+1]; /* discovered sources array */
+	char namebuf[MAX_NAME_LENGTH+1]; /* discovered sink/source name buf.*/
+	const char *alsanam;
+	char paname[MAX_NAME_LENGTH+1];
+	char amname[MAX_NAME_LENGTH+1];
+	int i, j, k;
+
+	pa_assert (card);
+	pa_assert (card->profiles);
+	pa_assert_se (discover = u->discover);
+
+	alsanam = pa_proplist_gets (card->proplist, "alsa.card_name");
+	data->paname = paname;
+	data->amname = amname;
+	data->amdescr = (char *)alsanam;
+	data->pacard.index = card->index;
+
+	PA_HASHMAP_FOREACH(prof, card->profiles, state) {
+		 /* TODO : skip selected profile here */
+
+		 /* skip profiles withoutqx sinks/sources */
+		if (!prof->n_sinks && !prof->n_sources)
+			continue;
+		 /* skip profiles with too few/many channels */
+		if (prof->n_sinks &&
+		    (prof->max_sink_channels < discover->chmin ||
+		     prof->max_sink_channels  > discover->chmax))
+			continue;
+		if (prof->n_sources &&
+		    (prof->max_source_channels < discover->chmin ||
+		     prof->max_source_channels  > discover->chmax))
+			continue;
+
+		 /* VALID PROFILE, STORE IT */
+		pa_log_debug ("Discovered valid profile: %s", prof->name);
+		data->pacard.profile = prof->name;
+		 /* NOW FILLING SINKS/SOURCE ARRAYS WITH PROFILE DATA */
+		get_sinks_and_sources_from_profile (prof, sinks, sources, namebuf, sizeof(namebuf));
+
+		 /* OUTPUT DIRECTION, SINKS */
+		data->direction = agl_output;
+		data->channels = prof->max_sink_channels;
+		for (i = 0; sinks[i]; i++) {
+			pa_log_debug ("Discovered valid sink #%s on card %s", sinks[i], cardid);
+			snprintf(paname, sizeof(paname), "alsa_output.%s.%s", cardid, sinks[i]);
+			handle_card_ports(u, data, card, prof);
+		}
+
+		 /* INPUT DIRECTION, SOURCES */
+		data->direction = agl_input;
+		data->channels = prof->max_source_channels;
+		for (i = 0; sources[i]; i++) {
+			pa_log_debug ("Discovered valid source #%s on card %s", sources[i], cardid);
+			snprintf(paname, sizeof(paname), "alsa_input.%s.%s", cardid, sinks[i]);
+			handle_card_ports(u, data, card, prof);
+		}
+	}
+}
+
+static void get_sinks_and_sources_from_profile (pa_card_profile *prof, char **sinks, char **sources, char *buf, int buflen)
+{
+	char *p = buf;
+	int i = 0;
+	int j = 0;
+
+	pa_assert (prof->name);
+
+	strncpy (buf, prof->name, (size_t)buflen);
+	buf[buflen-1] = '\0';
+
+	memset (sinks, 0, sizeof(char *) * (MAX_CARD_TARGET+1));
+	memset (sources, 0, sizeof(char *) * (MAX_CARD_TARGET+1));
+
+	do {
+		if (!strncmp (p, "output:", 7)) {
+			if (i >= MAX_CARD_TARGET) {
+                		pa_log_debug ("number of outputs exeeds the maximum %d in "
+				              "profile name '%s'", MAX_CARD_TARGET, prof->name);
+                		return;
+			}
+			sinks[i++] = get_sink_or_source_from_str (&p, 7);
+		} else if (!strncmp (p, "input:", 6)) {
+ 			if (j >= MAX_CARD_TARGET) {
+				pa_log_debug ("number of inputs exeeds the maximum %d in "
+				              "profile name '%s'", MAX_CARD_TARGET, prof->name);
+				return;
+			}
+			sources[j++] = get_sink_or_source_from_str (&p, 6);
+		} else {
+			pa_log ("%s: failed to parse profile name '%s'",
+			        __FILE__, prof->name);
+			return;
+		}
+	} while (*p);
+}
+
+static char *get_sink_or_source_from_str (char **string_ptr, int offs)
+{
+	char c, *name, *end;
+
+	name = *string_ptr + offs;
+
+	for (end = name;  (c = *end);   end++) {
+		if (c == '+') {
+			*end++ = '\0';
+			break;
+		}
+	}
+
+	*string_ptr = end;
+
+	return name;
+}
+
+static void handle_card_ports (struct userdata *u, agl_node *data, pa_card *card, pa_card_profile *prof) {
+	agl_node *node = NULL;
+	pa_device_port *port;
+	void *state;
+        bool created;
+	bool have_ports = false;
+	char key[MAX_NAME_LENGTH+1];
+	const char *amname = data->amname;
+
+	pa_assert (u);
+	pa_assert (data);
+	pa_assert (card);
+	pa_assert (prof);
+
+	if (card->ports) {
+		PA_HASHMAP_FOREACH (port, card->ports, state) {
+			if (port->profiles &&
+			    pa_hashmap_get (port->profiles, prof->name) &&
+			    ((port->direction == PA_DIRECTION_INPUT && data->direction == agl_input)||
+			    (port->direction == PA_DIRECTION_OUTPUT && data->direction == agl_output))) {
+				have_ports = true;
+				snprintf (key, sizeof(key), "%s@%s", data->paname, port->name);
+
+				data->key = key;
+				data->available = (port->available != PA_AVAILABLE_NO);
+				data->type = 0;
+				data->amname = amname;
+				data->paport = port->name;
+
+				printf ("Key : %s\n", key);
+
+				 /* this is needed to fill the "port->type" field */
+				//pa_classify_node_by_card (data, card, prof, port);
+
+				 /* this is needed to complete the "pa_discover_add_sink" first pass */
+				node = create_node (u, data, &created);
+			}
+		}
+	}
+
+	amname = "";
+	data->amname = amname;
+}
+
+static const char *node_key (struct userdata *u, agl_direction direction,
+			     void *data, pa_device_port *port, char *buf, size_t len) {
+	char *type;			/* "sink" or "source" */
+	const char *name;		/* sink or source name */
+	pa_card *card;
+	pa_card_profile *profile;
+	const char *profile_name;
+	const char *bus;
+	char *key = NULL;
+
+	pa_assert (u);
+	pa_assert (data);
+	pa_assert (buf);
+	pa_assert (direction == agl_input || direction == agl_output);
+
+	if (direction == agl_output) {
+		pa_sink *sink = data;
+		type = pa_xstrdup ("sink");
+		name = pa_utils_get_sink_name (sink);
+		card = sink->card;
+		if (!port)
+			port = sink->active_port;
+	} else {
+		pa_source *source = data;
+		type = pa_xstrdup ("source");
+		name = pa_utils_get_source_name (source);
+		card = source->card;
+		if (!port)
+			port = source->active_port;
+	}
+
+	pa_log_debug ("Node type (sink/source): %s", type);
+	pa_log_debug ("Node name: %s", name);
+
+	if (!card)
+		return NULL;
+
+	pa_assert_se (profile = card->active_profile);
+	if (!u->state.profile) {
+		pa_log_debug ("profile is now '%s'", profile->name);
+		profile_name = profile->name;
+	} else {
+		pa_log_debug ("state.profile is not null. '%s' supresses '%s'",
+			      u->state.profile, profile->name);
+		profile_name = u->state.profile;
+	}
+
+	if (!(bus = pa_utils_get_card_bus (card))) {
+		pa_log_debug ("ignoring card '%s' due to lack of '%s' property",
+			      pa_utils_get_card_name (card), PA_PROP_DEVICE_BUS);
+		return NULL;
+	}
+
+	if (pa_streq(bus, "pci") || pa_streq(bus, "usb") || pa_streq(bus, "platform")) {
+		if (!port)
+			key = (char *)name;
+		else {
+			key = buf;
+			snprintf (buf, len, "%s@%s", name, port->name);
+		}
+	}
+	/* we do not handle Bluetooth yet, and the function never returns it */
+	/*else if (pa_streq(bus, "bluetooth")) {
+	}*/
+	
+	return (const char *)key;
+}
+
+agl_node *pa_discover_find_node_by_key (struct userdata *u, const char *key)
+{
+	pa_discover *discover;
+	agl_node *node;
+
+	pa_assert (u);
+	pa_assert_se (discover = u->discover);
+
+	if (key)
+		node = pa_hashmap_get (discover->nodes.byname, key);
+	else
+		node = NULL;
+
+	return node;
+}
+
+void pa_discover_add_node_to_ptr_hash (struct userdata *u, void *ptr, agl_node *node)
+{
+	pa_discover *discover;
+
+	pa_assert (u);
+	pa_assert (ptr);
+	pa_assert (node);
+	pa_assert_se (discover = u->discover);
+
+	pa_hashmap_put (discover->nodes.byptr, ptr, node);
+}
+
+static agl_node *create_node (struct userdata *u, agl_node *data, bool *created_ret)
+{
+	pa_discover *discover;
+	agl_node *node;
+	bool created;
+
+	pa_assert (u);
+	pa_assert (data);
+    	pa_assert (data->key);
+	pa_assert (data->paname);
+	pa_assert_se (discover = u->discover);
+
+	if ((node = pa_hashmap_get (discover->nodes.byname, data->key))) {
+		pa_log_debug ("No need to create this node");
+		created = false;
+	} else {
+		pa_log_debug ("Creating new node");
+
+		node = agl_node_create (u, data);
+		pa_hashmap_put (discover->nodes.byname, node->key, node);
+
+		 /* TODO: registering the new node to the Optional router daemon */
+		/* if (node->available)
+			pa_audiomgr_register_node (u, node); */
+
+		created = true;
+	}
+
+	if (created_ret)
+		*created_ret = created;
+
+	return node;
+}
+
+void pa_discover_add_source (struct userdata *u, pa_source *source)
+{
+	static pa_nodeset_resdef def_resdef = {0, {0, 0}};
+
+	pa_core *core;
+	pa_discover *discover;
+	pa_module *module;
+	pa_card *card;
+	const char *key;
+	char kbf[256];
+	agl_node *node;
+
+	pa_assert (u);
+	pa_assert (source);
+	pa_assert_se (core = u->core);
+	pa_assert_se (discover = u->discover);
+
+	module = source->module;
+	card = source->card;
+
+	if (card) {
+		 /* helper function verifying that sink direction is input/output */
+		key = node_key (u, agl_input, source, NULL, kbf, sizeof(kbf));
+		if (!key) return;
+		pa_log_debug ("Source key: %s", key);
+		node = pa_discover_find_node_by_key (u, key);
+		if (!node) {	/* VERIFY IF THIS WORKS */
+			if (u->state.profile)
+				pa_log_debug ("can't find node for source (key '%s')", key);
+			else {	/* how do we get here ? not in initial setup */
+				u->state.source = source->index;
+				pa_log_debug ("BUG !");
+			}
+			return;
+		}
+		pa_log_debug("node for '%s' found (key %s). Updating with source data",
+			     node->paname, node->key);
+        	node->paidx = source->index;
+		node->available = true;
+		pa_discover_add_node_to_ptr_hash (u, source, node);
+	}
+}
+
+bool pa_discover_preroute_sink_input(struct userdata *u, pa_sink_input_new_data *data)
+{
+	pa_core *core;
+	pa_sink *sink;
+	pa_source *source;
+	pa_discover *discover;
+	pa_nodeset *nodeset;
+	pa_proplist *pl;
+	agl_node *node;
+
+	pa_assert (u);
+	pa_assert (data);
+	pa_assert_se (core = u->core);
+	pa_assert_se (discover = u->discover);
+	pa_assert_se (nodeset = u->nodeset);
+	pa_assert_se (pl = data->proplist);
+
+	 /* is there an existing matching node ? */
+	node = agl_node_get_from_data (u, agl_input, data);
+
+	if (!node) {
+		 /* create node */
+		node = agl_node_create (u, NULL);
+		node->direction = agl_input;
+		node->implement = agl_stream;
+		node->type = pa_classify_guess_stream_node_type (u, pl);
+		node->visible = true;
+		node->available = true;
+		node->ignore = true; /* gets ignored initially */
+		node->paname = pa_proplist_gets (pl, PA_PROP_APPLICATION_NAME);
+		node->client = data->client;
+		 /* add to global nodeset */
+		pa_idxset_put (nodeset->nodes, node, &node->index);
+	}
+
+	 /* create NULL sink */
+	if (!node->nullsink)
+		node->nullsink = pa_utils_create_null_sink (u, u->nsnam);
+	if (!node->nullsink)
+		return false;
+
+	 /* redirect sink input to NULL sink */
+	sink = pa_utils_get_null_sink (u, node->nullsink);
+
+	if (pa_sink_input_new_data_set_sink (data, sink, false))
+		pa_log_debug ("set sink %u for new sink-input", sink->index);
+	else
+		pa_log ("can't set sink %u for new sink-input", sink->index);
+
+	return true;
+}
+
+void pa_discover_register_sink_input (struct userdata *u, pa_sink_input *sinp)
+{
+	pa_core *core;
+	pa_discover *discover;
+	pa_proplist *pl, *client_proplist;
+	const char *media;
+	const char *name;
+	const char *role;
+	agl_node_type type;
+	agl_node node_data, *node;
+	char key[256];
+	pa_sink *sink;
+
+	pa_assert (u);
+	pa_assert (sinp);
+	pa_assert_se (core = u->core);
+	pa_assert_se (discover = u->discover);
+	pa_assert_se (pl = sinp->proplist);
+
+	media = pa_proplist_gets (sinp->proplist, PA_PROP_MEDIA_NAME);
+	if (media) {
+		/* special treatment for combine/loopback streams */
+		pa_log_debug ("Stream may me combine/loopback, in this case we should ignore it, but use it for now");
+		/* return; */
+	}
+
+	name = pa_utils_get_sink_input_name (sinp);
+	client_proplist = sinp->client ? sinp->client->proplist : NULL;
+
+	pa_log_debug ("registering input stream '%s'", name);
+
+	/* we could autodetect sink type by using: 
+	 *	- PA_PROP_APPLICATION_PROCESS_ID;
+	 *	- PA_PROP_APPLICATION_PROCESS_BINARY;
+	 *	- PA_PROP_APPLICATION_NAME;
+	 *	- ...
+	but let us assume "agl_player" for now */
+	type = agl_player;
+
+	/* this sets our routing properties on the sink, which are :
+	 *	#define PA_PROP_ROUTING_CLASS_NAME "routing.class.name"
+	 *	#define PA_PROP_ROUTING_CLASS_ID   "routing.class.id"
+	 *	#define PA_PROP_ROUTING_METHOD     "routing.method" */
+	pa_utils_set_stream_routing_properties (pl, type, NULL);
+
+	/* we now create a new node for this sink */
+	memset (&node_data, 0, sizeof(node_data));
+	node_data.key = key;
+	node_data.direction = agl_input;
+	node_data.implement = agl_stream;
+	node_data.channels  = sinp->channel_map.channels;
+	node_data.type      = type;
+	node_data.zone      = pa_utils_get_zone (sinp->proplist, client_proplist);
+	node_data.visible   = true;
+	node_data.available = true;
+	node_data.amname    = pa_proplist_gets (pl, "resource.set.appid");
+	node_data.amdescr   = pa_proplist_gets (pl, PA_PROP_MEDIA_NAME);
+	node_data.amid      = AM_ID_INVALID;
+	node_data.paname    = (char *)name;
+	node_data.paidx     = sinp->index;
+	/*node_data.rset.id   = pa_utils_get_rsetid (pl, idbuf, sizeof(idbuf));*/
+
+	role = pa_proplist_gets (sinp->proplist, PA_PROP_MEDIA_ROLE);
+	/* MAIN PREROUTING DONE HERE ! (this was failing in the samples) */
+	/*sink = mir_router_make_prerouting (u, &data, &sinp->channel_map, role, &target);*/
+
+	node = create_node (u, &node_data, NULL);
+	pa_assert (node);
+	pa_discover_add_node_to_ptr_hash (u, sinp, node);
+/*
+	if (sink && target) {
+		pa_log_debug ("move stream to sink %u (%s)", sink->index, sink->name);
+
+		if (pa_sink_input_move_to (sinp, sink, false) < 0)
+			pa_log ("failed to route '%s' => '%s'",node->amname,target->amname);
+		else
+			pa_audiomgr_add_default_route (u, node, target);
+	}*/
+}
+
+void pa_discover_register_source_output (struct userdata *u, pa_source_output *sout)
+{
+	pa_core *core;
+	pa_discover *discover;
+	pa_proplist *pl, *client_proplist;
+	const char *media;
+	const char *name;
+	const char *role;
+	agl_node_type type;
+	agl_node node_data, *node;
+	char key[256];
+	pa_source *source;
+
+	pa_assert (u);
+	pa_assert (sout);
+	pa_assert_se (core = u->core);
+	pa_assert_se (discover = u->discover);
+	pa_assert_se (pl = sout->proplist);
+
+	media = pa_proplist_gets (sout->proplist, PA_PROP_MEDIA_NAME);
+	if (media) {
+		/* special treatment for loopback streams (not combine as with sinks !) */
+		pa_log_debug ("Stream may me loopback, in this case we should ignore it, but use it for now");
+		/* return; */
+	}
+
+	 /* TODO : contrary to "pa_discover_register_sink_input", this function is always called
+	  * even if we do not find PA_PROP_MEDIA_NAME (see above). */
+	//pa_utils_set_stream_routing_properties (pl, type, NULL);
+
+	name = pa_utils_get_source_output_name (sout);
+	client_proplist = sout->client ? sout->client->proplist : NULL;
+
+	pa_log_debug("registering output stream '%s'", name);
+}
+
+void pa_discover_add_sink_input (struct userdata *u, pa_sink_input *sinp) 
+{
+	pa_core *core;
+	agl_node *node;
+
+	pa_assert (u);
+	pa_assert (sinp);
+	pa_assert_se (core = u->core);
+
+	if (!sinp->client)
+		return;
+
+	 /* is there an existing matching node ? */
+	node = agl_node_get_from_client (u, sinp->client);
+	if (!node) return;
+
+	 /* start the default routing */
+	implement_default_route (u, node, NULL, pa_utils_new_stamp ());
+}
diff --git a/discover.h b/discover.h
new file mode 100644
index 0000000..8845e40
--- /dev/null
+++ b/discover.h
@@ -0,0 +1,58 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#ifndef paagldiscover
+#define paagldiscover
+
+#include "userdata.h"
+
+struct pa_discover {
+    /* criteria for filtering sinks and sources */
+	unsigned chmin;    /**< minimum of max channels */
+	unsigned chmax;    /**< maximum of max channels */
+	bool selected;     /**< for alsa cards: whether to consider the
+                                     selected profile alone.
+                                     for bluetooth cards: no effect */
+	struct {
+		pa_hashmap *byname;
+		pa_hashmap *byptr;
+	} nodes;
+};
+
+struct pa_discover *pa_discover_init (struct userdata *);
+void pa_discover_done (struct userdata *);
+
+void pa_discover_add_card (struct userdata *, pa_card *);
+void pa_discover_remove_card (struct userdata *, pa_card *);
+void pa_discover_add_sink (struct userdata *, pa_sink *, bool);
+void pa_discover_remove_sink (struct userdata *, pa_sink *);
+void pa_discover_add_source (struct userdata *, pa_source *);
+void pa_discover_remove_source (struct userdata *, pa_source *);
+void pa_discover_add_sink_input (struct userdata *, pa_sink_input *);
+void pa_discover_remove_sink_input (struct userdata *, pa_sink_input *);
+bool pa_discover_preroute_sink_input (struct userdata *, pa_sink_input_new_data *);
+void pa_discover_register_sink_input (struct userdata *, pa_sink_input *);
+void pa_discover_register_source_output (struct userdata *, pa_source_output *);
+
+agl_node *pa_discover_find_node_by_key (struct userdata *, const char *);
+void pa_discover_add_node_to_ptr_hash (struct userdata *, void *, agl_node *);
+
+#endif
diff --git a/list.h b/list.h
new file mode 100644
index 0000000..5cc1473
--- /dev/null
+++ b/list.h
@@ -0,0 +1,48 @@
+#ifndef paagllist
+#define paagllist
+
+#define AGL_DLIST_INIT(self)                                            \
+    do {                                                                \
+        (&(self))->prev = &(self);                                      \
+        (&(self))->next = &(self);                                      \
+    } while(0)
+
+#define AGL_OFFSET(structure, member)                                    \
+    ((int)((char *)((&((structure *)0)->member)) - (char *)0))
+
+#define AGL_LIST_RELOCATE(structure, member, ptr)                       \
+    ((structure *)(void *)((char *)ptr - AGL_OFFSET(structure, member)))
+
+#define AGL_DLIST_FOR_EACH(structure, member, pos, head)                \
+    for (pos = AGL_LIST_RELOCATE(structure, member, (head)->next);      \
+         &pos->member != (head);                                        \
+         pos = AGL_LIST_RELOCATE(structure, member, pos->member.next))
+
+#define AGL_DLIST_FOR_EACH_SAFE(structure, member, pos, n, head)        \
+    for (pos = AGL_LIST_RELOCATE(structure, member, (head)->next),      \
+           n = AGL_LIST_RELOCATE(structure, member, pos->member.next);  \
+         &pos->member != (head);                                        \
+         pos = n,                                                       \
+           n = AGL_LIST_RELOCATE(structure, member, pos->member.next))
+
+#define AGL_DLIST_FOR_EACH_BACKWARDS(structure, member, pos, head)       \
+    for (pos = AGL_LIST_RELOCATE(structure, member, (head)->prev);      \
+         &pos->member != (head);                                        \
+         pos = AGL_LIST_RELOCATE(structure, member, pos->member.prev))
+
+#define AGL_DLIST_UNLINK(structure, member, elem)                       \
+    do {                                                                \
+        agl_dlist *after  = (elem)->member.prev;                        \
+        agl_dlist *before = (elem)->member.next;                        \
+        after->next = before;                                           \
+        before->prev = after;                                           \
+        (elem)->member.prev = (elem)->member.next = &(elem)->member;    \
+    } while(0)
+
+
+typedef struct agl_dlist {
+	struct agl_dlist *prev;
+	struct agl_dlist *next;
+} agl_dlist;
+
+#endif
diff --git a/loopback.c b/loopback.c
new file mode 100644
index 0000000..5b07ef7
--- /dev/null
+++ b/loopback.c
@@ -0,0 +1,112 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#include "loopback.h"
+#include "utils.h"
+#include "list.h"
+
+pa_loopback *pa_loopback_init (void)
+{
+	pa_loopback *loopback = pa_xnew0 (pa_loopback, 1);
+
+	return loopback;
+}
+
+void pa_loopback_done (struct userdata *u, pa_loopback *loopback)
+{
+	pa_loopnode *loop, *n;
+	pa_core *core;
+
+	pa_assert_se (core = u->core);
+
+	PA_LLIST_FOREACH_SAFE(loop, n, loopback->loopnodes) {
+		pa_module_unload_by_index(core, loop->module_index, false);
+    }
+}
+
+pa_loopnode *pa_loopnode_create (struct userdata *u, pa_loopnode_type type,
+				 uint32_t node_index, uint32_t source_index, uint32_t sink_index)
+{
+	pa_core *core;
+	pa_module *module;
+	pa_source *source;
+	pa_sink *sink;
+	const char *sonam;
+	const char *sinam;
+	pa_source_output *sout;
+	pa_sink_input *sinp;
+	pa_loopnode *loopnode;
+	int idx;
+	char args[256];
+
+	pa_assert (u);
+	pa_assert_se (core = u->core);
+
+	source = pa_idxset_get_by_index (core->sources, source_index);
+	sonam = pa_utils_get_source_name (source);
+	sink = pa_idxset_get_by_index (core->sinks, sink_index);
+	sinam = pa_utils_get_sink_name (sink);
+
+	snprintf (args, sizeof(args), "source=\"%s\" sink=\"%s\"", sonam, sinam);
+	module = pa_module_load (core, "module-loopback", args);
+
+	if (!module) {
+		pa_log ("failed to load loopback for source '%s' & sink '%s'", sonam, sinam);
+		return NULL;
+	}
+
+	 /* find the sink_input/source_output couple generated but the module we just loaded */
+	PA_IDXSET_FOREACH(sout, core->source_outputs, idx) {
+		if (sout->module && sout->module == module)
+			break;
+		sout = NULL;
+	}
+	PA_IDXSET_FOREACH(sinp, core->sink_inputs, idx) {
+		if (sinp->module && sinp->module == module)
+			break;
+		sinp = NULL;
+	}
+	if (!sout || !sinp) {
+		pa_module_unload (core, module, false);
+		return NULL;
+	}
+
+	loopnode = pa_xnew0 (pa_loopnode, 1);
+	loopnode->module_index = module->index;
+	loopnode->source_output_index = sout->index;
+	loopnode->sink_input_index = sinp->index;
+
+	return loopnode;
+}
+
+void pa_loopnode_destroy (struct userdata *u, pa_loopnode *loopnode)
+{
+	pa_core      *core;
+	pa_module    *module;
+
+	if (u && (core = u->core)) {
+		if ((module = pa_idxset_get_by_index (core->modules, loopnode->module_index))){
+			pa_log_info ("unloading loopback");
+			pa_module_unload (core, module, false);
+		}
+		pa_xfree (loopnode);
+	}
+}
diff --git a/loopback.h b/loopback.h
new file mode 100644
index 0000000..27cdef9
--- /dev/null
+++ b/loopback.h
@@ -0,0 +1,58 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#ifndef paaglloopback
+#define paaglloopback
+
+#include <stdint.h>
+
+#include <pulsecore/pulsecore-config.h>	/* required for "core.h" */
+#include <pulsecore/core.h>		/* required for "PA_LLIST_*" */
+
+#include "userdata.h"
+
+typedef struct pa_loopnode pa_loopnode;
+struct pa_loopnode {
+	PA_LLIST_FIELDS(pa_loopnode);
+	uint32_t   module_index;
+	uint32_t   node_index;
+	uint32_t   sink_input_index;
+	uint32_t   source_output_index;
+};
+
+typedef struct pa_loopback {
+    PA_LLIST_HEAD(pa_loopnode, loopnodes);
+} pa_loopback;
+
+typedef enum {
+	PA_LOOPNODE_TYPE_UNKNOWN = 0,
+	PA_LOOPNODE_SOURCE,
+	PA_LOOPNODE_SINK,
+} pa_loopnode_type;
+
+pa_loopback *pa_loopback_init (void);
+void pa_loopback_done (struct userdata *, pa_loopback *);
+
+pa_loopnode *pa_loopnode_create (struct userdata *, pa_loopnode_type,
+				 uint32_t, uint32_t, uint32_t);
+void pa_loopnode_destroy (struct userdata *, pa_loopnode *);
+
+#endif
diff --git a/module.c b/module.c
new file mode 100644
index 0000000..beb2c73
--- /dev/null
+++ b/module.c
@@ -0,0 +1,149 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+
+/* Load the module with :
+$ pulseaudio --system --dl-search-path=/mypath
+$ pactl load-module mypamodule
+ (PS : /mypath must be world-readable, because PulseAudio drops
+  its own privileges after initial startup)
+*/
+
+ /* THIS IS PROVIDED BY "pulseaudio-module-devel" package */
+
+#include <pulsecore/pulsecore-config.h>	/* required for "module.h" */
+#include <pulsecore/module.h>
+#include <pulsecore/modargs.h>		/* for "pa_modargs" */
+
+#include "userdata.h"			/* for "struct userdata" */
+#include "utils.h"			/* for "struct pa_null_sink", "pa_utils_create_null_sink()"... */
+#include "loopback.h"			/* for "struct pa_loopback/loopnode" */
+#include "zone.h"			/* for "struct pa_zoneset" */
+#include "node.h"			/* for "struct pa_nodeset" */
+#include "audiomgr.h"			/* for "struct pa_audiomgr" */
+#include "routerif.h"			/* for "struct pa_routerif" */
+#include "discover.h"			/* for "struct pa_discover" */
+#include "tracker.h"			/* for "struct pa_tracker" */
+#include "router.h"			/* for "struct pa_router" */
+
+#ifndef DEFAULT_CONFIG_DIR
+#define DEFAULT_CONFIG_DIR "/etc/pulse"
+#endif
+
+#ifndef DEFAULT_CONFIG_FILE
+#define DEFAULT_CONFIG_FILE "pulseaudio-agl.cfg"
+#endif
+
+
+ /* VALID ARGUMENTS */
+
+static const char* const valid_modargs[] = {
+	"config_dir",
+	"config_file",
+	"null_sink_name",
+	"audiomgr_socktype",
+	"audiomgr_address",
+	"audiomgr_port",
+	NULL
+};
+
+
+ /* INITIALIZATION FUNCTION */
+
+int pa__init (pa_module *m)
+{
+	pa_log ("Initializing \"pulseaudio-agl\" module");
+
+	struct userdata *u = NULL;
+	pa_modargs      *ma = NULL;	/* will contain module arguments */
+	const char      *cfgdir;
+	const char      *cfgfile;
+	const char      *nsnam;		/* NULL sink name (default = "null.agl") */
+	const char      *amsocktype;	/* Optional external routing daemon: socket type ("unix"/"tcp") */
+	const char      *amaddr;	/* Optional external routing daemon: socket address (path/ip address) */
+	const char      *amport;	/* Optional external routing daemon: socket port ("tcp" type only) */
+
+	pa_assert (m);
+
+	 /* treat module arguments */
+
+	ma = pa_modargs_new (m->argument, valid_modargs);
+
+	cfgdir     = pa_modargs_get_value (ma, "config_dir", DEFAULT_CONFIG_DIR);
+	cfgfile    = pa_modargs_get_value (ma, "config_file", DEFAULT_CONFIG_FILE);
+	nsnam      = pa_modargs_get_value (ma, "null_sink_name", NULL);
+	amsocktype = pa_modargs_get_value (ma, "audiomgr_socktype", NULL);
+	amaddr     = pa_modargs_get_value (ma, "audiomgr_address", NULL);
+	amport     = pa_modargs_get_value (ma, "audiomgr_port", NULL);
+
+	pa_log ("cfgdir : %s", cfgdir);
+	pa_log ("cfgfile : %s", cfgfile);
+
+	pa_utils_init_stamp ();
+
+	 /* initialize userdata */
+
+	u = pa_xnew0 (struct userdata, 1);
+	u->core      = m->core;
+	u->module    = m;
+	u->nsnam     = pa_xstrdup (nsnam) ;
+	u->zoneset   = pa_zoneset_init (u);
+	u->nodeset   = pa_nodeset_init (u);
+	u->audiomgr  = pa_audiomgr_init (u);
+	u->routerif  = pa_routerif_init (u, amsocktype, amaddr, amport);
+	u->router    = pa_router_init (u);
+	u->discover  = pa_discover_init (u);
+	u->tracker   = pa_tracker_init (u);
+
+	m->userdata = u;
+
+	 /* really initialize the module's core logic */
+
+	pa_tracker_synchronize (u);
+
+	 /* end */
+
+	pa_modargs_free(ma);
+
+	return 0;
+}
+
+
+ /* CLOSEUP FUNCTION */
+void pa__done (pa_module *m)
+{
+	pa_log ("Closing \"pulseaudio-agl\" module");
+
+	struct userdata *u;
+
+	pa_assert (m);
+
+	if (u = m->userdata) {
+		pa_tracker_done (u);
+		pa_discover_done (u);
+		pa_routerif_done (u);
+		pa_audiomgr_done (u);
+		pa_nodeset_done (u);
+		pa_zoneset_done (u);
+		pa_xfree (u->nsnam);
+		pa_xfree (u);
+	}	
+}
diff --git a/node.c b/node.c
new file mode 100644
index 0000000..c6c59e2
--- /dev/null
+++ b/node.c
@@ -0,0 +1,179 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#include "node.h"
+
+#include <pulsecore/idxset.h>
+
+pa_nodeset *pa_nodeset_init (struct userdata *u)
+{
+	pa_nodeset *ns;
+
+	pa_assert (u);
+
+	ns = pa_xnew0 (pa_nodeset, 1);
+	ns->nodes = pa_idxset_new (pa_idxset_trivial_hash_func,
+		                   pa_idxset_trivial_compare_func);
+	ns->roles = pa_hashmap_new (pa_idxset_string_hash_func,
+		                    pa_idxset_string_compare_func);
+	ns->binaries = pa_hashmap_new (pa_idxset_string_hash_func,
+		                       pa_idxset_string_compare_func);
+	return ns;
+}
+
+void pa_nodeset_done(struct userdata *u)
+{
+	pa_nodeset *ns;
+	pa_nodeset_map *role, *binary;
+	void *state;
+	int i;
+
+	if (u && (ns = u->nodeset)) {
+		pa_idxset_free (ns->nodes, NULL);
+
+		PA_HASHMAP_FOREACH(role, ns->roles, state) {
+			pa_xfree ((void *)role->name);
+			pa_xfree ((void *)role->resdef);
+		}
+		pa_hashmap_free (ns->roles);
+
+		PA_HASHMAP_FOREACH(binary, ns->binaries, state) {
+			pa_xfree ((void *)binary->name);
+			pa_xfree ((void *)binary->resdef);
+		}
+		pa_hashmap_free (ns->binaries);
+
+		for (i = 0;  i < APCLASS_DIM;  i++)
+			pa_xfree((void *)ns->class_name[i]);
+
+		free(ns);
+	}
+}
+
+agl_node *agl_node_create (struct userdata *u, agl_node *data)
+{
+	pa_nodeset *ns;
+	agl_node *node;
+
+	pa_assert (u);
+	pa_assert_se (ns = u->nodeset);
+
+	node = pa_xnew0 (agl_node, 1);
+
+	pa_idxset_put (ns->nodes, node, &node->index);
+
+	if (data) {
+		node->key = pa_xstrdup (data->key);
+		node->direction = data->direction;
+		node->implement = data->implement;
+		node->channels = data->channels;
+		node->location = data->location;
+		node->privacy = data->privacy;
+		node->type = data->type;
+		node->zone = pa_xstrdup (data->zone);
+		node->visible = data->visible;
+		node->available = data->available;
+		node->amname = pa_xstrdup (data->amname ? data->amname : data->paname);
+		node->amdescr = pa_xstrdup(data->amdescr ? data->amdescr : "");
+		node->amid = data->amid;
+		node->paname = pa_xstrdup (data->paname);
+		node->stamp = data->stamp;
+		node->rset.id = data->rset.id ? pa_xstrdup(data->rset.id) : NULL;
+		node->rset.grant = data->rset.grant;
+
+		if (node->implement == agl_device) {
+			node->pacard.index = data->pacard.index;
+			if (data->pacard.profile)
+				node->pacard.profile = pa_xstrdup (data->pacard.profile);
+			if (data->paport)
+				node->paport = data->paport;
+		}
+	}
+
+	 /* TODO : register the node to the router */
+	/* agl_router_register_node (u, node); */
+
+	return node;
+}
+
+const char *agl_node_type_str (agl_node_type type)
+{
+	switch (type) {
+		case agl_node_type_unknown: return "Unknown";
+		case agl_radio:             return "Radio";
+		case agl_player:            return "Player";
+		case agl_navigator:         return "Navigator";
+		case agl_game:              return "Game";
+		case agl_browser:           return "Browser";
+                case agl_camera:            return "Camera";
+		case agl_phone:             return "Phone";
+		case agl_alert:             return "Alert";
+		case agl_event:             return "Event";
+		case agl_system:            return "System";
+		default:                    return "<user defined>";
+	}
+}
+
+agl_node *agl_node_get_from_data (struct userdata *u, agl_direction type, void *data)
+{
+	pa_sink_input_new_data *sinp_data;
+	pa_source_output_new_data *sout_data;
+	pa_nodeset *nodeset;
+	agl_node *node;
+	uint32_t index;
+
+	pa_assert (u);
+	pa_assert (data);
+	pa_assert (nodeset = u->nodeset);
+
+	pa_assert (type == agl_input || type == agl_output);
+
+	/* input (= sink_input) */
+	if (type == agl_input) {
+		sinp_data = (pa_sink_input_new_data *) data;
+		PA_IDXSET_FOREACH(node, nodeset->nodes, index) {
+			if (node->client == sinp_data->client)
+				return node;
+		}
+	/* output (= source_output) TODO */
+	/*} else {*/
+	}
+
+	return NULL;
+}
+
+agl_node *agl_node_get_from_client (struct userdata *u, pa_client *client)
+{
+	pa_nodeset *nodeset;
+	agl_node *node;
+	uint32_t index;
+
+	pa_assert (u);
+	pa_assert (client);
+	pa_assert (nodeset = u->nodeset);
+
+	PA_IDXSET_FOREACH(node, nodeset->nodes, index) {
+		if (node->client == client)
+			return node;
+	}
+
+	return NULL;
+}
diff --git a/node.h b/node.h
new file mode 100644
index 0000000..e46ae62
--- /dev/null
+++ b/node.h
@@ -0,0 +1,111 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#ifndef paaglnode
+#define paaglnode
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "userdata.h"
+#include "list.h"
+#include "loopback.h"
+
+#define APCLASS_DIM  (agl_application_class_end - agl_application_class_begin + 1)
+
+struct pa_nodeset {
+	pa_idxset  *nodes;
+	pa_hashmap *roles;
+	pa_hashmap *binaries;
+	const char *class_name[APCLASS_DIM]; /* as much elements as app.classes (see in "userdata.h") */
+};
+
+struct pa_nodeset_resdef {
+	uint32_t priority;
+	struct {
+		uint32_t rset;
+		uint32_t audio;
+	} flags;
+};
+
+struct pa_nodeset_map {
+	const char *name;
+	agl_node_type type;
+	const char *role;
+	pa_nodeset_resdef *resdef;
+};
+
+struct pa_node_card {
+	uint32_t  index;
+	char     *profile;
+};
+
+struct pa_node_rset {
+	char     *id;               /**< resource set id, if any */
+	bool      grant;            /**< permission to play/render etc */
+};
+
+struct agl_node {
+	uint32_t       index;     /**< index into nodeset->idxset */
+	char          *key;       /**< hash key for discover lookups */
+	agl_direction  direction; /**< agl_input | agl_output */
+	agl_implement  implement; /**< agl_device | agl_stream */
+	pa_client     *client;    /**< matching client pointer (for agl_input nodes only) */
+	pa_null_sink  *nullsink;  /**< associated null sink (for agl_input nodes only) */
+	pa_loopnode   *loopnode;  /**< associated loopback */
+	uint32_t       channels;  /**< number of channels (eg. 1=mono, 2=stereo) */
+	agl_location   location;  /**< mir_internal | mir_external */
+	agl_privacy    privacy;   /**< mir_public | mir_private */
+	agl_node_type  type;      /**< mir_speakers | mir_headset | ...  */
+	char          *zone;      /**< zone where the node belong */
+	bool           visible;   /**< internal or can appear on UI  */
+	bool           available; /**< eg. is the headset connected?  */
+	bool           ignore;    /**< do not consider it while routing  */
+	bool           localrset; /**< locally generated resource set */
+	const char    *amname;    /**< audiomanager name */
+	const char    *amdescr;   /**< UI description */
+	uint16_t       amid;      /**< handle to audiomanager, if any */
+	const char    *paname;    /**< sink|source|sink_input|source_output name */
+	uint32_t       paidx;     /**< sink|source|sink_input|source_output index*/
+	pa_node_card   pacard;    /**< pulse card related data, if any  */
+	const char    *paport;    /**< sink or source port if applies */
+	/*pa_muxnode    *mux;*/       /**< for multiplexable input streams only */
+    	/*pa_loopnode   *loop;*/      /**< for looped back sources only */
+	agl_dlist      rtentries; /**< in device nodes: listhead of nodchain */
+	agl_dlist      rtprilist; /**< in stream nodes: priority link (head is in
+                                                                   pa_router)*/
+	agl_dlist      constrains; /**< listhead of constrains */
+	/*mir_vlim       vlim;*/      /**< volume limit */
+	pa_node_rset   rset;      /**< resource set info if applies */
+	uint32_t       stamp;
+	/*scripting_node *scripting;*/ /** scripting data, if any */
+};
+
+pa_nodeset *pa_nodeset_init (struct userdata *);
+void pa_nodeset_done (struct userdata *);
+
+agl_node *agl_node_create (struct userdata *, agl_node *);
+const char *agl_node_type_str (agl_node_type);
+
+agl_node *agl_node_get_from_data (struct userdata *, agl_direction, void *);
+agl_node *agl_node_get_from_client (struct userdata *, pa_client *);
+
+#endif
diff --git a/router.c b/router.c
new file mode 100644
index 0000000..855f9f8
--- /dev/null
+++ b/router.c
@@ -0,0 +1,198 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#include "router.h"
+#include "switch.h"
+#include "utils.h"
+
+pa_router *pa_router_init (struct userdata *u)
+{
+	pa_router *router;
+	size_t num_classes;
+
+	num_classes = agl_application_class_end;
+
+	router = pa_xnew0 (pa_router, 1);
+	router->rtgroups.input = pa_hashmap_new (pa_idxset_string_hash_func,
+		                                 pa_idxset_string_compare_func);
+	router->rtgroups.output = pa_hashmap_new (pa_idxset_string_hash_func,
+		                                  pa_idxset_string_compare_func);
+	router->maplen = num_classes;
+        router->priormap = pa_xnew0 (int, num_classes);
+
+	AGL_DLIST_INIT (router->nodlist);
+	AGL_DLIST_INIT (router->connlist);
+
+	return router;
+}
+
+void pa_router_done (struct userdata *u)
+{
+	pa_router *router;
+	agl_node *e,*n;
+	agl_connection *conn, *c;
+	agl_rtgroup *rtg;
+	agl_rtgroup **map;
+	int i;
+
+	if (u && (router = u->router)) {
+		AGL_DLIST_FOR_EACH_SAFE(agl_node, rtprilist, e,n, &router->nodlist)
+			AGL_DLIST_UNLINK(agl_node, rtprilist, e);
+		AGL_DLIST_FOR_EACH_SAFE(agl_connection, link, conn,c, &router->connlist) {
+			AGL_DLIST_UNLINK(agl_connection, link, conn);
+			pa_xfree (conn);
+		}
+		/*
+		PA_HASHMAP_FOREACH(rtg, router->rtgroups.input, state) {
+			rtgroup_destroy(u, rtg);
+		}
+		PA_HASHMAP_FOREACH(rtg, router->rtgroups.output, state) {
+			rtgroup_destroy(u, rtg);
+		}*/
+		pa_hashmap_free (router->rtgroups.input);
+		pa_hashmap_free (router->rtgroups.output);
+
+		for (i = 0;  i < AGL_ZONE_MAX;  i++) {
+			if ((map = router->classmap.input[i]))
+				pa_xfree(map);
+			if ((map = router->classmap.output[i]))
+				pa_xfree(map);
+		}
+
+		pa_xfree (router->priormap);
+		pa_xfree (router);
+
+		u->router = NULL;
+	}
+}
+
+agl_node *agl_router_make_prerouting (struct userdata *u, agl_node *data)
+{
+	pa_router *router;
+	int priority;
+	static bool done_prerouting;
+	uint32_t stamp;
+	agl_node *start, *end;
+	agl_node *target;
+
+	pa_assert (u);
+	pa_assert_se (router = u->router);
+	pa_assert_se (data->implement == agl_stream);
+
+	//priority = node_priority (u, data);
+
+	done_prerouting = false;
+	target = NULL;
+	stamp = pa_utils_new_stamp ();
+
+	//make_explicit_routes (u, stamp);
+
+	//pa_audiomgr_delete_default_routes(u);
+
+	AGL_DLIST_FOR_EACH_BACKWARDS(agl_node, rtprilist, start, &router->nodlist) {
+		//if ((start->implement == agl_device) &&
+		//    (!start->loop))	/* only manage looped real devices */
+		//	continue;
+
+		/*if (priority >= node_priority (u, start)) {
+			target = find_default_route (u, data, stamp);
+			if (target)
+				implement_preroute (u, data, target, stamp);
+			else
+				done_prerouting = true;
+		}*/
+
+		if (start->stamp >= stamp)
+			continue;
+
+		//end = find_default_route (u, start, stamp);
+		//if (end)
+		//	implement_default_route(u, start, end, stamp);
+	}
+
+	if (!done_prerouting) {
+		pa_log_debug ("Prerouting failed, trying to find default route as last resort");
+
+		//target = find_default_route (u, data, stamp);
+		//if (target)
+		//	implement_preroute (u, data, target, stamp);
+	}
+
+	return target;
+}
+
+void agl_router_make_routing (struct userdata *u)
+{
+	pa_router *router;
+	static bool ongoing_routing;	/* true while we are actively routing */
+	uint32_t stamp;
+	agl_node *start, *end;
+
+	pa_assert (u);
+	pa_assert_se (router = u->router);
+
+	if (ongoing_routing)		/* already routing, canceling */
+		return;
+	ongoing_routing = true;
+	stamp = pa_utils_new_stamp ();
+
+	pa_log_debug("stamp for routing: %d", stamp);
+
+	// make_explicit_routes (u, stamp);
+
+	// pa_audiomgr_delete_default_routes (u);
+
+	AGL_DLIST_FOR_EACH_BACKWARDS(agl_node, rtprilist, start, &router->nodlist) {
+		//if ((start->implement == agl_device) &&
+		//   (!start->loop))	/* only manage looped real devices */
+		//	continue;
+
+		if (start->stamp >= stamp)
+			continue;
+
+		end = find_default_route (u, start, stamp);
+		if (end)
+			implement_default_route (u, start, end, stamp);
+	}
+
+	// pa_audiomgr_send_default_routes (u);
+
+	ongoing_routing = false;
+}
+
+void implement_default_route (struct userdata *u,
+                              agl_node *start, agl_node *end,
+                              uint32_t stamp)
+{
+	if (start->direction == agl_input) {
+		agl_switch_setup_link (u, start, end, false);
+		//agl_volume_add_limiting_class(u, end, volume_class(start), stamp);
+	} else {
+		agl_switch_setup_link (u, end, start, false);
+	}
+}
+
+agl_node *find_default_route (struct userdata *u, agl_node *start, uint32_t stamp)
+{
+	/* TODO */
+
+	return NULL;
+}
diff --git a/router.h b/router.h
new file mode 100644
index 0000000..ffb9361
--- /dev/null
+++ b/router.h
@@ -0,0 +1,79 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#ifndef paaglrouter
+#define paaglrouter
+
+#include "userdata.h"
+#include "list.h"
+#include "node.h"
+
+#define AGL_ZONE_MAX 8	/* max 8 zones, demo is using 5 */ /* DEFINED IN MURPHY */
+
+/*typedef bool (*agl_rtgroup_accept_t)(struct userdata *, agl_rtgroup *, agl_node *);*/
+/*typedef int (*agl_rtgroup_compare_t)(struct userdata *, agl_rtgroup *, agl_node *, agl_node *);*/
+
+struct agl_rtgroup {
+	char *name;      /**< name of the rtgroup */
+	agl_dlist entries;   /**< listhead of ordered rtentries */
+	/*agl_rtgroup_accept_t accept;*/ /**< function pointer, whether to accept a node or not */
+	/*agl_rtgroup_compare_t compare;*/ /**< function pointer, comparision for ordering */
+	/*scripting_rtgroup *scripting;*/ /**< data for scripting, if any */
+};
+
+typedef struct {
+	pa_hashmap *input;
+	pa_hashmap *output;
+} pa_rtgroup_hash;
+
+typedef struct {
+	agl_rtgroup **input[AGL_ZONE_MAX];
+	agl_rtgroup **output[AGL_ZONE_MAX];
+} pa_rtgroup_classmap;
+
+struct pa_router {
+	pa_rtgroup_hash rtgroups;
+	size_t maplen;		      /**< length of the class */
+	pa_rtgroup_classmap classmap; /**< map device node types to rtgroups */
+	int *priormap;                /**< stream node priorities */
+	agl_dlist nodlist;            /**< priorized list of the stream nodes
+                                        (entry in node: rtprilist) */
+	agl_dlist connlist;           /**< listhead of the connections */
+};
+
+struct agl_connection {
+	agl_dlist link;    /**< list of connections */
+	bool blocked;      /**< true if this conflicts with another route */
+	uint16_t amid;     /**< audio manager connection id */
+	uint32_t from;     /**< source node index */
+	uint32_t to;       /**< destination node index */
+	uint32_t stream;   /**< index of the sink-input to be routed */
+};
+
+pa_router *pa_router_init (struct userdata *);
+void pa_router_done (struct userdata *);
+agl_node *agl_router_make_prerouting (struct userdata *, agl_node *);
+void agl_router_make_routing (struct userdata *);
+
+void implement_default_route (struct userdata *, agl_node *, agl_node *, uint32_t);
+agl_node *find_default_route (struct userdata *, agl_node *, uint32_t);
+
+#endif
diff --git a/routerif.h b/routerif.h
new file mode 100644
index 0000000..05d2d96
--- /dev/null
+++ b/routerif.h
@@ -0,0 +1,10 @@
+#ifndef paaglrouterif
+#define paaglrouterif
+
+#include "userdata.h"
+
+pa_routerif *pa_routerif_init (struct userdata *, const char *,
+	                       const char *, const char *);
+void pa_routerif_done (struct userdata *);
+
+#endif
diff --git a/socketif.c b/socketif.c
new file mode 100644
index 0000000..dd29752
--- /dev/null
+++ b/socketif.c
@@ -0,0 +1,54 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#include "routerif.h"
+
+struct pa_routerif {
+    int  sock;
+};
+
+pa_routerif *pa_routerif_init (struct userdata *u,
+                               const char      *socktyp,
+                               const char      *addr,
+                               const char      *port)
+{
+	pa_module *m = u->module;
+	pa_routerif *routerif = NULL;
+    
+	routerif = pa_xnew0 (pa_routerif, 1);
+	routerif->sock = -1;
+
+	return routerif;
+}
+
+void pa_routerif_done (struct userdata *u)
+{
+	pa_routerif *routerif;
+
+	if (u && (routerif = u->routerif)) {
+		if (routerif->sock >= 0)
+			close (routerif->sock);
+
+		pa_xfree (routerif);
+
+		u->routerif = NULL;
+	}
+}
diff --git a/switch.c b/switch.c
new file mode 100644
index 0000000..5b77180
--- /dev/null
+++ b/switch.c
@@ -0,0 +1,267 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#include <pulsecore/pulsecore-config.h>	/* required for headers below */
+#include <pulsecore/core-util.h>	/* requred for "pa_streq" */
+#include <pulsecore/namereg.h>		/* for PA_NAMEREG_SOURCE */
+
+#include "utils.h"
+#include "switch.h"
+#include "node.h"
+
+bool agl_switch_setup_link (struct userdata *u, agl_node *from, agl_node *to, bool explicit)
+{
+	pa_core *core;
+	pa_sink *sink;
+	pa_source *source;
+
+	pa_assert (u);
+	pa_assert_se (core = u->core);
+
+	/* EXPLICIT ROUTES/DEFAULT ROUTES */
+
+	/* 1) EXPLICIT ROUTES : "FROM" AND "TO" ARE DEFINED */
+	if (explicit) {
+		pa_assert (from);
+		pa_assert (to);
+
+		switch (from->implement) {
+			/* STREAM SOURCE */
+			case agl_stream:
+			switch (to->implement) {
+				/* STREAM TO STREAM : NOT IMPLEMENTED */
+				case agl_stream:
+					pa_log_debug ("routing to streams not implemented");
+					break;
+				/* STREAM TO DEVICE : OK */
+				case agl_device:
+					//if (!setup_explicit_stream2dev_link (u, from, to))
+					//	return false;
+					break;
+				/* DEFAULT */
+				default:
+					pa_log ("can't setup link: invalid sink node");
+					return false;
+			}
+			break;
+
+			/* DEVICE SOURCE : NOT IMPLEMENTED */
+			case agl_device:
+				pa_log_debug("input device routing is not implemented yet");
+				break;
+
+			/* DEFAULT */
+			default:
+				pa_log ("can't setup link: invalid sink node");
+				return false;
+		}
+	}
+
+	/* 2) DEFAULT ROUTES : EITHER ONE OF "FROM" AND "TO" ARE DEFINED */
+	else {
+		pa_assert (from || to);
+
+		/* "TO" IS DEFINED */
+		if (to) {
+			switch (to->implement) {
+				/* STREAM DESTINATION */
+				case agl_stream:
+				switch (from->implement) {
+					/* STREAM TO STREAM : NOT IMPLEMENTED */
+					case agl_stream:
+						pa_log_debug ("routing to streams not implemented");
+						break;
+					/* DEVICE TO STREAM : OK */
+					case agl_device:
+						//if (!setup_default_dev2stream_link(u, from, to))
+ 						//	return false;
+						break;
+					/* DEFAULT */
+					default:
+						pa_log ("can't setup link: invalid sink node");
+						return false;
+				}
+				break;
+
+				/* DEVICE DESTINATION */
+				case agl_device:
+				/* IF THERE IS NO SOURCE : DEFAULT OUTPUT PREROUTE */
+				/* if (!from)
+					return setup_device_output(u, to) != NULL;
+				else { */
+				switch (from->implement) {
+					/* STREAM TO DEVICE : OK */
+					case agl_stream:
+						//if (!setup_default_stream2dev_link (u, from, to))
+						//	return false;
+						break;
+					/* DEVICE TO DEVICE : OK */
+					case agl_device:
+						//if (!setup_default_dev2dev_link (u, from, to))
+						//	return false;
+						break;
+					/* DEFAULT */
+					default:
+						pa_log ("can't setup link: invalid source node");
+						return false;
+				}
+				break;
+				/* } */
+
+				/* DEFAULT DESTINATION : NULL */
+				default:
+					pa_log ("can't setup link");
+					return false;
+			}
+		}
+
+		/* ONLY "FROM" IS DEFINED */
+		else {
+			/* only works with a device, use default input prerouting - TODO */
+			if (from->implement == agl_device) {
+				pa_log_debug ("default routing for a device input is not supported yet");
+				return false;
+			}
+			/* (the rest supposes "from->implement == agl_stream") */
+			/* refuse unknown node types for default routing */
+			if (from->type == agl_node_type_unknown) {
+				pa_log_debug ("default routing for unknown node type is refused");
+				return false;
+			}
+
+			sink = pa_utils_get_primary_alsa_sink (u);
+			source = pa_utils_get_null_source (u, from->nullsink);
+
+			from->loopnode = pa_loopnode_create (u, PA_LOOPNODE_SINK, from->index, source->index, sink->index);
+		}
+	}
+
+	//pa_log_debug ("link %s => %s is established", from->amname, to->amname);
+
+	return true;
+}
+
+bool agl_switch_teardown_link (struct userdata *u, agl_node *from, agl_node *to)
+{
+	pa_core *core;
+
+	pa_assert (u);
+	pa_assert_se (core = u->core);
+	pa_assert (from || from->direction == agl_input);
+	pa_assert (to || to->direction == agl_output);
+
+	switch (from->implement) {
+		case agl_stream:
+		switch (to->implement) {
+			/* STREAM TO STREAM : NOT IMPLEMENTED */
+			case agl_stream:
+				pa_log_debug ("routing to streams is not implemented yet");
+				break;
+			/* STREAM TO DEVICE : NOT OK */
+			case agl_device:
+				//if (!teardown_explicit_stream2dev_link (u, from, to))
+				//	return false;
+				break;
+			default:
+				pa_log ("can't teardown link: invalid sink node");
+				return false;
+		}
+		break;
+
+		case agl_device:
+		 /* DEVICE TO STREAM OR DEVICE TO DEVICE : NOT HANDLED */ 
+			pa_log_debug ("input device routing is not implemented yet");
+			break;
+
+		default:
+			pa_log ("can't teardown link: invalid source node");
+			return false;
+	}
+
+	pa_log_debug("link %s => %s is torn down", from->amname, to->amname);
+
+	return true;
+}
+
+
+bool set_port (struct userdata *u, agl_node *node)
+{
+	pa_core *core;
+	pa_sink *sink;
+	pa_source *source;
+	pa_device_port *port;
+	void *data = NULL;
+	uint32_t paidx = PA_IDXSET_INVALID;
+
+	pa_assert (u);
+	pa_assert (node);
+	pa_assert (node->paname);
+	pa_assert_se (core = u->core);
+
+	if (node->direction != agl_input && node->direction != agl_output)
+		return false;
+	if (node->implement != agl_device)
+		return true;
+	if (!node->paport)
+		return true;
+
+	if (node->direction == agl_input) {
+		source = pa_namereg_get (core, node->paname, PA_NAMEREG_SOURCE);
+		if (!source) {
+			pa_log ("cannot set port for node '%s': source not found", node->paname);
+			return false;
+		}
+
+		port = source->active_port;
+		/* active port and wanted port already match */
+		if (pa_streq (node->paport, port->name))
+			return true;
+
+		/* ACTIVE CODE */
+		if (pa_source_set_port (source, node->paport, false) < 0)
+			return false;
+
+		data = source;
+		paidx = source->index;
+	}
+
+	if (node->direction == agl_output) {
+		sink = pa_namereg_get (core, node->paname, PA_NAMEREG_SINK);
+		if (!sink) {
+			pa_log ("cannot set port for node '%s': source not found", node->paname);
+			return false;
+		}
+
+		port = sink->active_port;
+		/* active port and wanted port already match */
+		if (pa_streq (node->paport, port->name))
+			return true;
+
+		/* ACTIVE CODE */
+		if (pa_sink_set_port (sink, node->paport, false) < 0)
+			return false;
+
+		data = sink;
+		paidx = sink->index;
+	}
+
+	return true;
+}
diff --git a/switch.h b/switch.h
new file mode 100644
index 0000000..c454f1a
--- /dev/null
+++ b/switch.h
@@ -0,0 +1,35 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#ifndef paaglswitch
+#define paaglswitch
+
+#include "userdata.h"
+
+bool agl_switch_setup_link (struct userdata *, agl_node *, agl_node *, bool);
+bool agl_switch_teardown_link (struct userdata *, agl_node *, agl_node *);
+
+/*pa_source *setup_device_input(struct userdata *, agl_node *);*/
+/*pa_sink   *setup_device_output(struct userdata *, agl_node *);*/
+
+bool set_port (struct userdata *, agl_node *);
+
+#endif
diff --git a/tracker.c b/tracker.c
new file mode 100644
index 0000000..21ce02c
--- /dev/null
+++ b/tracker.c
@@ -0,0 +1,371 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#include "tracker.h"
+#include "discover.h"
+#include "router.h"
+#include "utils.h"
+
+struct pa_card_hooks {
+    pa_hook_slot    *put;
+    pa_hook_slot    *unlink;
+    pa_hook_slot    *profchg;
+};
+
+struct pa_port_hooks {
+    pa_hook_slot    *avail;
+};
+
+struct pa_sink_hooks {
+    pa_hook_slot    *put;
+    pa_hook_slot    *unlink;
+    pa_hook_slot    *portchg;
+};
+
+struct pa_source_hooks {
+    pa_hook_slot    *put;
+    pa_hook_slot    *unlink;
+    pa_hook_slot    *portchg;
+};
+
+struct pa_sink_input_hooks {
+    pa_hook_slot    *neew;
+    pa_hook_slot    *put;
+    pa_hook_slot    *unlink;
+};
+
+struct pa_source_output_hooks {
+    pa_hook_slot    *neew;
+    pa_hook_slot    *put;
+    pa_hook_slot    *unlink;
+};
+
+struct pa_tracker {
+    pa_card_hooks           card;
+    pa_port_hooks           port;
+    pa_sink_hooks           sink;
+    pa_source_hooks         source;
+    pa_sink_input_hooks     sink_input;
+    pa_source_output_hooks  source_output;
+};
+
+
+static pa_hook_result_t card_put (void *, void *, void *);
+static pa_hook_result_t card_unlink (void *, void *, void *);
+static pa_hook_result_t card_profile_changed (void *, void *, void *);
+
+static pa_hook_result_t port_available_changed (void *, void *, void *);
+
+static pa_hook_result_t sink_put (void *, void *, void *);
+static pa_hook_result_t sink_unlink (void *, void *, void *);
+static pa_hook_result_t sink_port_changed (void *, void *, void *);
+
+static pa_hook_result_t source_put (void *, void *, void *);
+static pa_hook_result_t source_unlink (void *, void *, void *);
+static pa_hook_result_t source_port_changed (void *, void *, void *);
+
+static pa_hook_result_t sink_input_new (void *, void *, void *);
+static pa_hook_result_t sink_input_put (void *, void *, void *);
+static pa_hook_result_t sink_input_unlink (void *, void *, void *);
+
+static pa_hook_result_t source_output_new (void *, void *, void *);
+static pa_hook_result_t source_output_put (void *, void *, void *);
+static pa_hook_result_t source_output_unlink (void *, void *, void *);
+
+
+pa_tracker *pa_tracker_init (struct userdata *u)
+{
+	pa_core *core;
+	pa_hook *hooks;
+	pa_tracker *tracker;
+	pa_card_hooks *card;
+	pa_port_hooks *port;
+	pa_sink_hooks *sink;
+	pa_source_hooks *source;
+	pa_sink_input_hooks *sinp;
+	pa_source_output_hooks *sout;
+
+	pa_assert (u);
+	pa_assert_se (core = u->core);
+	pa_assert_se (hooks = core->hooks);
+
+	tracker = pa_xnew0 (pa_tracker, 1);
+	card = &tracker->card;
+	port = &tracker->port;
+	sink = &tracker->sink;
+	source = &tracker->source;
+	sinp = &tracker->sink_input;
+	sout = &tracker->source_output;
+
+	 /* card */
+	card->put = pa_hook_connect (hooks + PA_CORE_HOOK_CARD_PUT,
+	                             PA_HOOK_LATE, card_put, u);
+	card->unlink = pa_hook_connect (hooks + PA_CORE_HOOK_CARD_UNLINK,
+	                                PA_HOOK_LATE, card_unlink, u);
+	card->profchg = pa_hook_connect (hooks + PA_CORE_HOOK_CARD_UNLINK,
+	                                 PA_HOOK_LATE, card_profile_changed, u);
+
+	 /* port */
+	port->avail = pa_hook_connect (hooks + PA_CORE_HOOK_PORT_AVAILABLE_CHANGED,
+	                               PA_HOOK_LATE, port_available_changed, u);
+
+	 /* sink */
+	sink->put = pa_hook_connect (hooks + PA_CORE_HOOK_SINK_PUT,
+	                             PA_HOOK_LATE, sink_put, u);
+	sink->unlink = pa_hook_connect (hooks + PA_CORE_HOOK_SINK_UNLINK,
+	                                PA_HOOK_LATE, sink_unlink, u);
+	sink->portchg = pa_hook_connect (hooks + PA_CORE_HOOK_SINK_PORT_CHANGED,
+	                                 PA_HOOK_LATE, sink_port_changed, u);
+
+	 /* source */
+	source->put = pa_hook_connect (hooks + PA_CORE_HOOK_SOURCE_PUT,
+		                       PA_HOOK_LATE, source_put, u);
+	source->unlink = pa_hook_connect (hooks + PA_CORE_HOOK_SOURCE_UNLINK,
+		                          PA_HOOK_LATE, source_unlink, u);
+	source->portchg = pa_hook_connect (hooks + PA_CORE_HOOK_SOURCE_PORT_CHANGED,
+		                          PA_HOOK_LATE, source_port_changed, u);
+
+	 /* sink-input */
+	sinp->neew = pa_hook_connect (hooks + PA_CORE_HOOK_SINK_INPUT_NEW,
+		                      PA_HOOK_EARLY, sink_input_new, u);
+	sinp->put = pa_hook_connect (hooks + PA_CORE_HOOK_SINK_INPUT_PUT,
+		                     PA_HOOK_LATE, sink_input_put, u);
+	sinp->unlink = pa_hook_connect (hooks + PA_CORE_HOOK_SINK_INPUT_UNLINK,
+		                        PA_HOOK_LATE, sink_input_unlink, u);
+
+	 /* source-output */
+	sout->neew = pa_hook_connect (hooks + PA_CORE_HOOK_SOURCE_OUTPUT_NEW,
+		                      PA_HOOK_EARLY, source_output_new, u);
+	sout->put = pa_hook_connect (hooks + PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK,
+				     PA_HOOK_LATE, source_output_put, u);
+	sout->unlink = pa_hook_connect (hooks + PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK,
+		                        PA_HOOK_LATE, source_output_unlink, u);
+
+	return tracker;	
+}
+
+void pa_tracker_done (struct userdata *u)
+{
+	pa_tracker *tracker;	
+	pa_card_hooks *card;
+	pa_port_hooks *port;
+	pa_sink_hooks *sink;
+	pa_source_hooks *source;
+	pa_sink_input_hooks *sinp;
+
+	if (u && (tracker = u->tracker)) {
+
+		card = &tracker->card;
+		pa_hook_slot_free (card->put);
+		pa_hook_slot_free (card->unlink);
+		pa_hook_slot_free (card->profchg);
+
+		port = &tracker->port;
+		pa_hook_slot_free (port->avail);
+
+		sink = &tracker->sink;
+		pa_hook_slot_free (sink->put);
+		pa_hook_slot_free (sink->unlink);
+		pa_hook_slot_free (sink->portchg);
+
+		source = &tracker->source;
+		pa_hook_slot_free (source->put);
+		pa_hook_slot_free (source->unlink);
+		pa_hook_slot_free (source->portchg);
+
+		sinp = &tracker->sink_input;
+		pa_hook_slot_free (sinp->neew);
+		pa_hook_slot_free (sinp->put);
+		pa_hook_slot_free (sinp->unlink);
+
+		pa_xfree(tracker);
+        
+		u->tracker = NULL;
+	}
+}
+
+ /* main logic initialization function */
+void pa_tracker_synchronize (struct userdata *u)
+{
+	pa_core *core;
+	pa_card *card;
+	pa_sink *sink;
+	pa_source *source;
+	pa_sink_input *sinp;
+	pa_source_output *sout;
+	uint32_t index;
+
+	pa_assert (u);
+	pa_assert_se (core = u->core);
+
+	 /* initialize "stamp" incremental card property to 0 */
+	pa_utils_init_stamp ();
+
+	 /* discover.c : add each valid USB/PCI/Platform ALSA sound card */
+	PA_IDXSET_FOREACH (card, core->cards, index) {
+        	pa_discover_add_card (u, card);
+	}
+
+	PA_IDXSET_FOREACH (sink, core->sinks, index) {
+		pa_discover_add_sink (u, sink, false);
+	}
+
+	PA_IDXSET_FOREACH (source, core->sources, index) {
+		pa_discover_add_source (u, source);
+	}
+
+	PA_IDXSET_FOREACH(sinp, core->sink_inputs, index) {
+		pa_discover_register_sink_input (u, sinp);
+	}
+
+	PA_IDXSET_FOREACH(sout, core->source_outputs, index) {
+		pa_discover_register_source_output (u, sout);
+	}
+
+	agl_router_make_routing (u);
+}
+
+
+ /* HOOK IMPLEMENTATIONS */
+static pa_hook_result_t card_put (void *hook_data,
+                                  void *call_data,
+                                  void *slot_data)
+{
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t card_unlink (void *hook_data,
+                                     void *call_data,
+                                     void *slot_data)
+{
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t card_profile_changed (void *hook_data,
+                                              void *call_data,
+                                              void *slot_data)
+{
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t port_available_changed (void *hook_data,
+                                                void *call_data,
+                                                void *slot_data)
+{
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t sink_put (void *hook_data,
+                                  void *call_data,
+                                  void *slot_data)
+{
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t sink_unlink (void *hook_data,
+                                     void *call_data,
+                                     void *slot_data)
+{
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t sink_port_changed (void *hook_data,
+                                           void *call_data,
+                                           void *slot_data)
+{
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_put (void *hook_data,
+                                    void *call_data,
+                                    void *slot_data)
+{
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_unlink (void *hook_data,
+                                       void *call_data,
+                                       void *slot_data)
+{
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_port_changed (void *hook_data,
+                                             void *call_data,
+                                             void *slot_data)
+{
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t sink_input_new (void *hook_data,
+                                        void *call_data,
+                                        void *slot_data)
+{
+	/* main hook, called by each client in its 1st phase */
+	pa_sink_input_new_data *data = (pa_sink_input_new_data *)call_data;
+	struct userdata *u = (struct userdata *)slot_data;
+	bool success;
+
+	success = pa_discover_preroute_sink_input (u, data);
+
+	return success ? PA_HOOK_OK : PA_HOOK_CANCEL;
+}
+
+static pa_hook_result_t sink_input_put (void *hook_data,
+                                        void *call_data,
+                                        void *slot_data)
+{
+	/* called by each client in its 2nd phase */
+	pa_sink_input *sinp = (pa_sink_input *)call_data;
+	struct userdata *u = (struct userdata *)slot_data;
+
+	pa_discover_add_sink_input (u, sinp);
+
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t sink_input_unlink (void *hook_data,
+                                           void *call_data,
+                                           void *slot_data)
+{
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_output_new (void *hook_data,
+                                           void *call_data,
+                                           void *slot_data)
+{
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_output_put (void *hook_data,
+                                           void *call_data,
+                                           void *slot_data)
+{
+	return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_output_unlink (void *hook_data,
+                                              void *call_data,
+                                              void *slot_data)
+{
+	return PA_HOOK_OK;
+}
diff --git a/tracker.h b/tracker.h
new file mode 100644
index 0000000..aae5a83
--- /dev/null
+++ b/tracker.h
@@ -0,0 +1,11 @@
+#ifndef paagltracker
+#define paagltracker
+
+#include "userdata.h"
+
+pa_tracker *pa_tracker_init (struct userdata *);
+void pa_tracker_done (struct userdata *);
+
+void pa_tracker_synchronize(struct userdata *);
+
+#endif
diff --git a/userdata.h b/userdata.h
new file mode 100644
index 0000000..d484cbf
--- /dev/null
+++ b/userdata.h
@@ -0,0 +1,120 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#ifndef paagluserdata
+#define paagluserdata
+
+#include <pulsecore/pulsecore-config.h>	/* required for "core.h" and "module.h" */
+#include <pulsecore/core.h>
+#include <pulsecore/module.h>
+
+#define AM_ID_INVALID 65535		/* invalid state in several places */
+
+
+typedef struct pa_null_sink pa_null_sink;
+typedef struct pa_zoneset pa_zoneset;
+typedef struct pa_nodeset pa_nodeset;
+typedef struct pa_audiomgr pa_audiomgr;
+typedef struct pa_routerif pa_routerif;
+typedef struct pa_discover pa_discover;
+typedef struct pa_tracker pa_tracker;
+typedef struct pa_router pa_router;
+
+typedef struct pa_nodeset_resdef pa_nodeset_resdef;
+typedef struct pa_nodeset_map pa_nodeset_map;
+typedef struct pa_node_card pa_node_card;
+typedef struct pa_node_rset pa_node_rset;
+
+typedef struct pa_card_hooks pa_card_hooks;
+typedef struct pa_port_hooks pa_port_hooks;
+typedef struct pa_sink_hooks pa_sink_hooks;
+typedef struct pa_source_hooks pa_source_hooks;
+typedef struct pa_sink_input_hooks pa_sink_input_hooks;
+typedef struct pa_source_output_hooks pa_source_output_hooks;
+
+typedef struct agl_zone agl_zone;
+typedef struct agl_node agl_node;
+typedef struct agl_rtgroup agl_rtgroup;
+typedef struct agl_connection agl_connection;
+
+typedef struct {
+    char *profile;
+    uint32_t sink;
+    uint32_t source;
+} pa_agl_state;
+
+struct userdata {
+	pa_core       *core;
+	pa_module     *module;
+	char          *nsnam;
+	pa_zoneset    *zoneset;
+	pa_nodeset    *nodeset;
+	pa_audiomgr   *audiomgr;
+	pa_routerif   *routerif;
+	pa_router     *router;
+	pa_discover   *discover;
+	pa_tracker    *tracker;
+	pa_agl_state state;
+};
+
+ /* application classes */
+typedef enum agl_node_type {
+	agl_node_type_unknown = 0,
+
+	agl_application_class_begin,
+	agl_radio = agl_application_class_begin,
+	agl_player,
+	agl_navigator,
+	agl_game,
+	agl_browser,
+	agl_camera,
+	agl_phone,                  /**< telephony voice */
+	agl_alert,                  /**< ringtone, alarm */
+	agl_event,                  /**< notifications */
+	agl_system,                 /**< always audible system notifications, events */
+	agl_application_class_end,
+} agl_node_type;
+
+typedef enum agl_direction {
+	agl_direction_unknown = 0,
+	agl_input,
+	agl_output
+} agl_direction;
+
+typedef enum agl_implement {
+	agl_implementation_unknown = 0,
+	agl_device,
+	agl_stream
+} agl_implement;
+
+typedef enum agl_location {
+	agl_location_unknown = 0,
+	agl_internal,
+	agl_external
+} agl_location;
+
+typedef enum agl_privacy {
+	agl_privacy_unknown = 0,
+	agl_public,
+	agl_private
+} agl_privacy;
+
+#endif
diff --git a/utils.c b/utils.c
new file mode 100644
index 0000000..dc9c756
--- /dev/null
+++ b/utils.c
@@ -0,0 +1,277 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#include "userdata.h"
+#include "utils.h"
+#include "node.h"
+
+#define DEFAULT_NULL_SINK_NAME "null.agl"
+
+#ifndef PA_PROP_PROCESS_ENVIRONMENT
+#define PA_PROP_PROCESS_ENVIRONMENT "application.process.environment"
+#endif
+#define PA_ZONE_NAME_DEFAULT "driver"
+#define PA_PROP_ZONE_NAME "zone.name"
+#define PA_PROP_ENV_ZONE  PA_PROP_PROCESS_ENVIRONMENT ".AUDIO_ZONE"
+
+#define PA_PROP_ROUTING_CLASS_NAME "routing.class.name"
+#define PA_PROP_ROUTING_CLASS_ID   "routing.class.id"
+#define PA_PROP_ROUTING_METHOD     "routing.method"
+
+static uint32_t stamp;
+
+struct pa_null_sink {
+	char      *name;
+	uint32_t   module_index;
+	uint32_t   sink_index;
+};
+
+pa_null_sink *pa_utils_create_null_sink (struct userdata *u, const char *name)
+{
+	pa_core      *core;
+	pa_module    *module;
+	pa_null_sink *ns;
+	pa_sink      *s, *sink;
+	uint32_t      idx;
+	char          args[256];
+
+	pa_assert (u);
+	pa_assert_se (core = u->core);
+
+	if (!name)
+		name = DEFAULT_NULL_SINK_NAME;	/* default is "null.agl" */
+
+	snprintf (args, sizeof(args), "sink_name=\"%s.%d\" channels=2", name, pa_utils_new_stamp ());
+	module = pa_module_load (core, "module-null-sink", args);
+	sink = NULL;
+
+	if (!module) {
+		pa_log ("failed to load null sink '%s'", name);
+		return NULL;
+	} else {
+		PA_IDXSET_FOREACH(s, core->sinks, idx) {
+			if (s->module && s->module == module) {
+				sink = s;
+				pa_log_info("created agl null sink named '%s'", name);
+				break;
+			}
+		}
+	}
+
+	ns = pa_xnew0 (pa_null_sink, 1);
+	ns->name = pa_xstrdup (name);
+	ns->module_index = module ? module->index : PA_IDXSET_INVALID;
+	ns->sink_index = sink ? sink->index : PA_IDXSET_INVALID;
+
+	return ns;
+}
+
+void pa_utils_destroy_null_sink (struct userdata *u, pa_null_sink *ns)
+{
+	pa_core      *core;
+	pa_module    *module;
+
+	if (u && (core = u->core)) {
+		if ((module = pa_idxset_get_by_index (core->modules, ns->module_index))){
+			pa_log_info ("unloading null sink '%s'", ns->name);
+			pa_module_unload (core, module, false);
+		}
+
+		pa_xfree (ns->name);
+		pa_xfree (ns);
+	}
+}
+
+pa_sink *pa_utils_get_null_sink (struct userdata *u, struct pa_null_sink *ns)
+{
+	pa_core *core;
+	pa_sink *sink;
+
+	pa_assert (u);
+	pa_assert_se ((core = u->core));
+
+	return pa_idxset_get_by_index (core->sinks, ns->sink_index);
+}
+
+pa_source *pa_utils_get_null_source (struct userdata *u, struct pa_null_sink *ns)
+{
+	pa_sink *sink;
+
+	sink = pa_utils_get_null_sink (u, ns);
+
+	return sink ? sink->monitor_source : NULL;
+}
+
+
+const char *pa_utils_get_card_name (pa_card *card)
+{
+	return (card && card->name) ? card->name : "<unknown>";
+}
+
+const char *pa_utils_get_card_bus (pa_card *card)
+{
+	const char *bus = NULL;
+	const char *name;
+
+	if (card && !(bus = pa_proplist_gets (card->proplist,PA_PROP_DEVICE_BUS))) {
+		name = pa_utils_get_card_name (card);
+		if (!strncmp (name, "alsa_card.", 10)) {
+			if (!strncmp (name + 10, "pci-", 4))
+				bus = "pci";
+			else if (!strncmp (name + 10, "platform-", 9))
+				bus = "platform";
+			else if (!strncmp (name + 10, "usb-", 4))
+				bus = "usb";
+		}
+	}
+
+	return (char *)bus;
+}
+
+const char *pa_utils_get_sink_name (pa_sink *sink)
+{
+	return (sink && sink->name) ? sink->name : "<unknown>";
+}
+
+const char *pa_utils_get_source_name (pa_source *source)
+{
+	return (source && source->name) ? source->name : "<unknown>";
+}
+
+const char *pa_utils_get_sink_input_name (pa_sink_input *sinp)
+{
+	char *name = NULL;
+
+	if (sinp && sinp->proplist) {
+		name = (char *)pa_proplist_gets (sinp->proplist, PA_PROP_APPLICATION_NAME);
+		if (!name)
+			name = (char *)pa_proplist_gets (sinp->proplist, PA_PROP_APPLICATION_PROCESS_BINARY);
+		if (!name)
+			name = "<unknown>";
+	}
+
+        return (const char *)name;
+}
+
+const char *pa_utils_get_source_output_name (pa_source_output *sout)
+{
+	char *name = NULL;
+
+	if (sout && sout->proplist) {
+		name = (char *)pa_proplist_gets (sout->proplist, PA_PROP_APPLICATION_NAME);
+		if (!name)
+			name = (char *)pa_proplist_gets (sout->proplist, PA_PROP_APPLICATION_PROCESS_BINARY);
+		if (!name)
+			name = "<unknown>";
+	}
+
+        return (const char *)name;
+}
+
+pa_sink *pa_utils_get_primary_alsa_sink (struct userdata *u)
+{
+	pa_core *core;
+	pa_sink *sink;
+	int idx;
+
+	pa_assert (u);
+	pa_assert_se ((core = u->core));
+
+        PA_IDXSET_FOREACH(sink, core->sinks, idx) {
+		if (sink->name && strstr (sink->name, "alsa_output"))
+			return sink;
+        }
+
+	return NULL;
+}
+
+void pa_utils_init_stamp (void)
+{
+	stamp = 0;
+}
+
+uint32_t pa_utils_new_stamp (void)
+{
+	return ++stamp;
+}
+
+uint32_t pa_utils_get_stamp (void)
+{
+	return stamp;
+}
+
+
+
+char *pa_utils_get_zone (pa_proplist *pl, pa_proplist *client_props)
+{
+	const char *zone;
+
+	pa_assert (pl);
+
+	 /* grab the "zone.name" PA_PROP environment variable ;
+	  * otherwise just fall back to default "driver" zone */
+	zone = pa_proplist_gets (pl, PA_PROP_ZONE_NAME);
+	if (!zone) {
+		if (!client_props || !(zone = pa_proplist_gets (client_props, PA_PROP_ENV_ZONE)))
+			zone = PA_ZONE_NAME_DEFAULT;		
+	}
+
+	return (char *)zone;
+}
+
+bool pa_utils_set_stream_routing_properties (pa_proplist *pl, int styp, void *target)
+{
+	const char *clnam;	/* will become "agl_player" e.g. */
+	char clid[32];		/* will become "1" e.g. */
+	const char *method;	/* will become "default" (it target is NULL) or "explicit" */
+
+	pa_assert (pl);
+	pa_assert (styp >= 0);	/* type different from "agl_node_type_unknown" */
+
+	clnam = agl_node_type_str (styp);
+	snprintf (clid, sizeof(clid), "%d", styp);
+	method = target ? "explicit" : "default";
+
+	if (pa_proplist_sets (pl, PA_PROP_ROUTING_CLASS_NAME, clnam ) < 0 ||
+	    pa_proplist_sets (pl, PA_PROP_ROUTING_CLASS_ID  , clid  ) < 0 ||
+	    pa_proplist_sets (pl, PA_PROP_ROUTING_METHOD    , method) < 0)
+	{
+		pa_log ("failed to set some stream property");
+		return false;
+	}
+
+	return true;
+}
+
+bool pa_utils_unset_stream_routing_properties (pa_proplist *pl)
+{
+	pa_assert (pl);
+
+	if (pa_proplist_unset (pl, PA_PROP_ROUTING_CLASS_NAME) < 0 ||
+	    pa_proplist_unset (pl, PA_PROP_ROUTING_CLASS_ID  ) < 0 ||
+	    pa_proplist_unset (pl, PA_PROP_ROUTING_METHOD    ) < 0)
+	{
+		pa_log ("failed to unset some stream property");
+		return false;
+	}
+
+	return true;	
+}
diff --git a/utils.h b/utils.h
new file mode 100644
index 0000000..dac35b9
--- /dev/null
+++ b/utils.h
@@ -0,0 +1,53 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#ifndef paaglutils
+#define paaglutils
+
+#include <pulsecore/core.h>
+
+#include "userdata.h"
+
+struct pa_null_sink;
+
+struct pa_null_sink *pa_utils_create_null_sink (struct userdata *, const char *);
+void pa_utils_destroy_null_sink (struct userdata *, struct pa_null_sink *);
+pa_sink *pa_utils_get_null_sink (struct userdata *, struct pa_null_sink *);
+pa_source *pa_utils_get_null_source (struct userdata *, struct pa_null_sink *);
+
+ /* general helper functions */ 
+const char *pa_utils_get_card_name (pa_card *);
+const char *pa_utils_get_card_bus (pa_card *);
+const char *pa_utils_get_sink_name (pa_sink *);
+const char *pa_utils_get_source_name (pa_source *);
+const char *pa_utils_get_sink_input_name (pa_sink_input *);
+const char *pa_utils_get_source_output_name (pa_source_output *);
+pa_sink *pa_utils_get_primary_alsa_sink (struct userdata *);
+void pa_utils_init_stamp (void);
+uint32_t pa_utils_new_stamp (void);
+uint32_t pa_utils_get_stamp (void);
+
+ /* AM-oriented helper functions */
+char *pa_utils_get_zone (pa_proplist *, pa_proplist *);
+bool pa_utils_set_stream_routing_properties (pa_proplist *, int, void *);
+bool pa_utils_unset_stream_routing_properties (pa_proplist *);
+
+#endif
diff --git a/zone.c b/zone.c
new file mode 100644
index 0000000..7b1b04a
--- /dev/null
+++ b/zone.c
@@ -0,0 +1,58 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#include "zone.h"
+
+struct pa_zoneset {
+	struct {
+		pa_hashmap     *hash;
+		agl_zone       *index[AGL_ZONE_MAX];
+	} zones;
+};
+
+pa_zoneset *pa_zoneset_init (struct userdata *u)
+{
+	pa_zoneset *zs;
+
+	pa_assert (u);
+
+	zs = pa_xnew0 (pa_zoneset, 1);
+	zs->zones.hash = pa_hashmap_new (pa_idxset_string_hash_func,
+		                         pa_idxset_string_compare_func);
+
+	return zs;
+}
+
+void pa_zoneset_done (struct userdata *u)
+{
+	pa_zoneset *zs;
+	void *state;
+	agl_zone *zone;
+
+	if (u && (zs = u->zoneset)) {
+
+		PA_HASHMAP_FOREACH(zone, zs->zones.hash, state) {
+			pa_xfree ((void *)zone->name);
+		}
+		pa_hashmap_free (zs->zones.hash);
+		free (zs);
+	}    
+}
diff --git a/zone.h b/zone.h
new file mode 100644
index 0000000..d9ae9a9
--- /dev/null
+++ b/zone.h
@@ -0,0 +1,37 @@
+/*
+ * module-agl-audio -- PulseAudio module for providing audio routing support
+ * (forked from "module-murphy-ivi" - https://github.com/otcshare )
+ * Copyright (c) 2012, Intel Corporation.
+ * Copyright (c) 2016, IoT.bzh
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU Lesser General Public License,
+ * version 2.1, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ *
+ */
+#ifndef paaglzone
+#define paaglzone
+
+#include "userdata.h"
+
+#define AGL_ZONE_MAX 8
+
+struct agl_zone {
+	const char *name;
+	uint32_t    index;
+};
+
+pa_zoneset *pa_zoneset_init (struct userdata *);
+void pa_zoneset_done (struct userdata *);
+
+#endif