Bluetooth: Audio: Add PACS for broadcast sink
Add support for using PACS and/or capabilities for
the broadcast sink role. PACS and capabilities were
originally only supported for the unicast server
role, so the PACS callbacks were moved their own
struct, as if a device supports both the unicast
server role and the broadcast sink role, it will
only have a single PACS instance.
Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
diff --git a/include/zephyr/bluetooth/audio/audio.h b/include/zephyr/bluetooth/audio/audio.h
index 29c4998..ee2b16d 100644
--- a/include/zephyr/bluetooth/audio/audio.h
+++ b/include/zephyr/bluetooth/audio/audio.h
@@ -1367,7 +1367,15 @@
* @return 0 in case of success or negative value in case of error.
*/
int (*release)(struct bt_audio_stream *stream);
+};
+/** @brief Callback structure for the Public Audio Capabilities Service (PACS)
+ *
+ * This is used for the Unicast Server
+ * (@kconfig{CONFIG_BT_AUDIO_UNICAST_SERVER}) and Broadcast Sink
+ * (@kconfig{CONFIG_BT_AUDIO_BROADCAST_SINK}) roles.
+ */
+struct bt_audio_pacs_cb {
/** @brief Get available audio contexts callback
*
* Get available audio contexts callback is called whenever a remote client
@@ -1377,7 +1385,7 @@
* @param[in] conn The connection that requests the available audio
* contexts. Will be NULL if requested for sending
* a notification, as a result of calling
- * bt_audio_unicast_server_available_contexts_changed().
+ * bt_pacs_available_contexts_changed().
* @param[in] dir Direction of the endpoint.
* @param[out] context Pointer to the contexts that needs to be set.
*
@@ -1422,8 +1430,7 @@
* @param[in] conn The connection that requests the location.
* Will be NULL if the location is requested
* for sending a notification, as a result of
- * calling
- * bt_audio_unicast_server_location_changed().
+ * calling bt_audio_pacs_location_changed().
* @param[in] dir Direction of the endpoint.
* @param[out] location Pointer to the location that needs to be set.
*
@@ -1662,6 +1669,40 @@
* @{
*/
+/** @brief Register Published Audio Capabilities Service callbacks.
+ *
+ * Only one callback structure can be registered, and attempting to
+ * registering more than one will result in an error.
+ *
+ * This can only be done for the Unicast Server
+ * (@kconfig{CONFIG_BT_AUDIO_UNICAST_SERVER}) and Broadcast Sink
+ * (@kconfig{CONFIG_BT_AUDIO_BROADCAST_SINK}) roles.
+ *
+ * Calling bt_audio_capability_register() will implicitly register the
+ * callbacks.
+ *
+ * @param cb Unicast server callback structure.
+ *
+ * @return 0 in case of success or negative value in case of error.
+ */
+int bt_audio_pacs_register_cb(const struct bt_audio_pacs_cb *cb);
+
+/** @brief Notify that the location has changed
+ *
+ * @param dir Direction of the location changed.
+ *
+ * @return 0 in case of success or negative value in case of error.
+ */
+int bt_audio_pacs_location_changed(enum bt_audio_dir dir);
+
+/** @brief Notify available audio contexts changed
+ *
+ * Notify connected clients that the available audio contexts has changed
+ *
+ * @return 0 in case of success or negative value in case of error.
+ */
+int bt_pacs_available_contexts_changed(void);
+
/** @brief Register unicast server callbacks.
*
* Only one callback structure can be registered, and attempting to
@@ -1684,24 +1725,6 @@
*/
int bt_audio_unicast_server_unregister_cb(const struct bt_audio_unicast_server_cb *cb);
-/** @brief Notify location changed
- *
- * Notify connected clients that the location has changed
- *
- * @param dir Direction of the endpoint.
- *
- * @return 0 in case of success or negative value in case of error.
- */
-int bt_audio_unicast_server_location_changed(enum bt_audio_dir dir);
-
-/** @brief Notify available audio contexts changed
- *
- * Notify connected clients that the available audio contexts has changed
- *
- * @return 0 in case of success or negative value in case of error.
- */
-int bt_audio_unicast_server_available_contexts_changed(void);
-
/** @} */ /* End of group bt_audio_server */
/**
diff --git a/include/zephyr/bluetooth/audio/capabilities.h b/include/zephyr/bluetooth/audio/capabilities.h
index bbafbfe..6a4b587 100644
--- a/include/zephyr/bluetooth/audio/capabilities.h
+++ b/include/zephyr/bluetooth/audio/capabilities.h
@@ -232,10 +232,12 @@
enum bt_audio_dir dir;
/** Capability codec reference */
struct bt_codec *codec;
+#if defined(CONFIG_BT_AUDIO_UNICAST_SERVER)
/** Capability preferences */
struct bt_audio_capability_pref pref;
/** Capability operations reference */
struct bt_audio_capability_ops *ops;
+#endif /* CONFIG_BT_AUDIO_UNICAST_SERVER */
sys_snode_t node;
};
diff --git a/samples/bluetooth/broadcast_audio_sink/prj.conf b/samples/bluetooth/broadcast_audio_sink/prj.conf
index 22e4e99..1dd1fd1 100644
--- a/samples/bluetooth/broadcast_audio_sink/prj.conf
+++ b/samples/bluetooth/broadcast_audio_sink/prj.conf
@@ -1,6 +1,9 @@
CONFIG_BT=y
CONFIG_BT_DEBUG_LOG=y
CONFIG_BT_AUDIO=y
+CONFIG_BT_SMP=y
+CONFIG_BT_PAC_SNK=y
+CONFIG_BT_PERIPHERAL=y
CONFIG_BT_AUDIO_BROADCAST_SINK=y
CONFIG_BT_DEVICE_NAME="Broadcast Audio Sink"
diff --git a/samples/bluetooth/broadcast_audio_sink/src/main.c b/samples/bluetooth/broadcast_audio_sink/src/main.c
index 117da94..7a74620 100644
--- a/samples/bluetooth/broadcast_audio_sink/src/main.c
+++ b/samples/bluetooth/broadcast_audio_sink/src/main.c
@@ -5,6 +5,7 @@
*/
#include <zephyr/bluetooth/bluetooth.h>
#include <zephyr/bluetooth/audio/audio.h>
+#include <zephyr/bluetooth/audio/capabilities.h>
#define SEM_TIMEOUT K_SECONDS(10)
@@ -147,6 +148,11 @@
.pa_sync_lost = pa_sync_lost_cb
};
+static struct bt_audio_capability capabilities = {
+ .dir = BT_AUDIO_DIR_SINK,
+ .codec = &preset_16_2_1.codec,
+};
+
static int init(void)
{
int err;
@@ -159,6 +165,12 @@
printk("Bluetooth initialized\n");
+ err = bt_audio_capability_register(&capabilities);
+ if (err) {
+ printk("Capability register failed (err %d)\n", err);
+ return err;
+ }
+
bt_audio_broadcast_sink_register_cb(&broadcast_sink_cbs);
for (size_t i = 0U; i < ARRAY_SIZE(streams); i++) {
diff --git a/subsys/bluetooth/audio/Kconfig.baps b/subsys/bluetooth/audio/Kconfig.baps
index 0a91bd8..2de9e05 100644
--- a/subsys/bluetooth/audio/Kconfig.baps
+++ b/subsys/bluetooth/audio/Kconfig.baps
@@ -153,6 +153,8 @@
bool "Bluetooth Broadcast Sink Audio Support [EXPERIMENTAL]"
select EXPERIMENTAL
select BT_ISO_SYNC_RECEIVER
+ depends on BT_PERIPHERAL
+ depends on BT_PAC_SNK
help
This option enables support for Bluetooth Broadcast Sink Audio using
Isochronous channels.
@@ -243,7 +245,7 @@
config BT_AUDIO_CAPABILITY
# Virtual/hidden option
bool
- default y if BT_ASCS || BT_AUDIO_BROADCAST_SINK
+ default y if BT_PACS
rsource "Kconfig.pacs"
rsource "Kconfig.ascs"
diff --git a/subsys/bluetooth/audio/capabilities.c b/subsys/bluetooth/audio/capabilities.c
index c578d90..9311e52 100644
--- a/subsys/bluetooth/audio/capabilities.c
+++ b/subsys/bluetooth/audio/capabilities.c
@@ -230,6 +230,19 @@
return cap->ops->release(stream);
}
+static struct bt_audio_unicast_server_cb unicast_server_cb = {
+ .config = unicast_server_config_cb,
+ .reconfig = unicast_server_reconfig_cb,
+ .qos = unicast_server_qos_cb,
+ .enable = unicast_server_enable_cb,
+ .start = unicast_server_start_cb,
+ .metadata = unicast_server_metadata_cb,
+ .disable = unicast_server_disable_cb,
+ .stop = unicast_server_stop_cb,
+ .release = unicast_server_release_cb
+};
+#endif /* CONFIG_BT_AUDIO_UNICAST_SERVER && CONFIG_BT_ASCS */
+
static int publish_capability_cb(struct bt_conn *conn, uint8_t dir,
uint8_t index, struct bt_codec *codec)
{
@@ -309,18 +322,9 @@
return get_available_contexts(dir, contexts);
}
-static struct bt_audio_unicast_server_cb unicast_server_cb = {
- .config = unicast_server_config_cb,
- .reconfig = unicast_server_reconfig_cb,
- .qos = unicast_server_qos_cb,
- .enable = unicast_server_enable_cb,
- .start = unicast_server_start_cb,
- .metadata = unicast_server_metadata_cb,
- .disable = unicast_server_disable_cb,
- .stop = unicast_server_stop_cb,
- .release = unicast_server_release_cb,
- .get_available_contexts = get_available_contexts_cb,
+static struct bt_audio_pacs_cb pacs_cb = {
.publish_capability = publish_capability_cb,
+ .get_available_contexts = get_available_contexts_cb,
#if defined(CONFIG_BT_PAC_SNK_LOC) || defined(CONFIG_BT_PAC_SRC_LOC)
.publish_location = publish_location_cb,
#if defined(CONFIG_BT_PAC_SNK_LOC_WRITEABLE) || defined(CONFIG_BT_PAC_SRC_LOC_WRITEABLE)
@@ -328,7 +332,6 @@
#endif /* CONFIG_BT_PAC_SNK_LOC_WRITEABLE || CONFIG_BT_PAC_SRC_LOC_WRITEABLE */
#endif /* CONFIG_BT_PAC_SNK_LOC || CONFIG_BT_PAC_SRC_LOC */
};
-#endif /* CONFIG_BT_AUDIO_UNICAST_SERVER && CONFIG_BT_ASCS */
sys_slist_t *bt_audio_capability_get(enum bt_audio_dir dir)
{
@@ -345,6 +348,7 @@
/* Register Audio Capability */
int bt_audio_capability_register(struct bt_audio_capability *cap)
{
+ static bool pacs_cb_registered;
sys_slist_t *lst;
if (!cap || !cap->codec) {
@@ -360,6 +364,19 @@
"codec vid 0x%04x", cap, cap->dir, cap->codec->id,
cap->codec->cid, cap->codec->vid);
+ if (!pacs_cb_registered) {
+ int err;
+
+ err = bt_audio_pacs_register_cb(&pacs_cb);
+ if (err != 0) {
+ BT_DBG("Failed to register PACS callbacks: %d",
+ err);
+ return err;
+ }
+
+ pacs_cb_registered = true;
+ }
+
#if defined(CONFIG_BT_AUDIO_UNICAST_SERVER) && defined(CONFIG_BT_ASCS)
/* Using the capabilities instead of the unicast server directly will
* require the capabilities to register the callbacks, which not only
@@ -438,8 +455,6 @@
int bt_audio_capability_set_location(enum bt_audio_dir dir,
enum bt_audio_location location)
{
- int err;
-
if (0) {
#if defined(CONFIG_BT_PAC_SNK_LOC)
} else if (dir == BT_AUDIO_DIR_SINK) {
@@ -455,11 +470,16 @@
return -EINVAL;
}
- if (IS_ENABLED(CONFIG_BT_AUDIO_UNICAST_SERVER)) {
- err = bt_audio_unicast_server_location_changed(dir);
+ if (IS_ENABLED(CONFIG_BT_PAC_SNK_LOC) ||
+ IS_ENABLED(CONFIG_BT_PAC_SRC_LOC)) {
+ int err;
+
+ err = bt_audio_pacs_location_changed(dir);
if (err) {
BT_DBG("Location for dir %d wasn't notified: %d",
dir, err);
+
+ return err;
}
}
@@ -537,8 +557,8 @@
return err;
}
- if (IS_ENABLED(CONFIG_BT_AUDIO_UNICAST_SERVER)) {
- err = bt_audio_unicast_server_available_contexts_changed();
+ if (IS_ENABLED(CONFIG_BT_PACS)) {
+ err = bt_pacs_available_contexts_changed();
if (err) {
BT_DBG("Available contexts weren't notified: %d", err);
return err;
diff --git a/subsys/bluetooth/audio/pacs.c b/subsys/bluetooth/audio/pacs.c
index f2b5c0a..dab9e14 100644
--- a/subsys/bluetooth/audio/pacs.c
+++ b/subsys/bluetooth/audio/pacs.c
@@ -11,6 +11,7 @@
#include <zephyr/zephyr.h>
#include <zephyr/sys/byteorder.h>
+#include <zephyr/sys/check.h>
#include <zephyr/device.h>
#include <zephyr/init.h>
@@ -33,6 +34,8 @@
NET_BUF_SIMPLE_DEFINE_STATIC(read_buf, CONFIG_BT_L2CAP_TX_MTU);
+static const struct bt_audio_pacs_cb *pacs_cb;
+
static void pac_data_add(struct net_buf_simple *buf, uint8_t num,
struct bt_codec_data *data)
{
@@ -60,8 +63,8 @@
rsp = net_buf_simple_add(&read_buf, sizeof(*rsp));
rsp->num_pac = 0;
- if (unicast_server_cb == NULL ||
- unicast_server_cb->publish_capability == NULL) {
+ if (pacs_cb == NULL ||
+ pacs_cb->publish_capability == NULL) {
return;
}
@@ -71,9 +74,8 @@
struct bt_pac *pac;
int err;
- err = unicast_server_cb->publish_capability(conn, dir,
- rsp->num_pac,
- &codec);
+ err = pacs_cb->publish_capability(conn, dir, rsp->num_pac,
+ &codec);
if (err != 0) {
break;
}
@@ -133,16 +135,15 @@
enum bt_audio_context context_snk, context_src;
int err;
- if (unicast_server_cb == NULL ||
- unicast_server_cb->get_available_contexts == NULL) {
+ if (pacs_cb == NULL ||
+ pacs_cb->get_available_contexts == NULL) {
BT_WARN("No callback for get_available_contexts");
return -ENODATA;
}
if (IS_ENABLED(CONFIG_BT_PAC_SNK)) {
- err = unicast_server_cb->get_available_contexts(conn,
- BT_AUDIO_DIR_SINK,
- &context_snk);
+ err = pacs_cb->get_available_contexts(conn, BT_AUDIO_DIR_SINK,
+ &context_snk);
if (err) {
return err;
}
@@ -152,9 +153,8 @@
}
if (IS_ENABLED(CONFIG_BT_PAC_SRC)) {
- err = unicast_server_cb->get_available_contexts(conn,
- BT_AUDIO_DIR_SOURCE,
- &context_src);
+ err = pacs_cb->get_available_contexts(conn, BT_AUDIO_DIR_SOURCE,
+ &context_src);
if (err) {
return err;
}
@@ -226,13 +226,13 @@
{
int err;
- if (unicast_server_cb == NULL ||
- unicast_server_cb->publish_location == NULL) {
+ if (pacs_cb == NULL ||
+ pacs_cb->publish_location == NULL) {
BT_WARN("No callback for publish_location");
return -ENODATA;
}
- err = unicast_server_cb->publish_location(conn, dir, location);
+ err = pacs_cb->publish_location(conn, dir, location);
if (err != 0 || *location == 0) {
BT_DBG("err (%d) or invalid location value (%u)",
err, *location);
@@ -309,8 +309,8 @@
return BT_GATT_ERR(BT_ATT_ERR_INVALID_ATTRIBUTE_LEN);
}
- if (unicast_server_cb == NULL ||
- unicast_server_cb->write_location == NULL) {
+ if (pacs_cb == NULL ||
+ pacs_cb->write_location == NULL) {
BT_WARN("No callback for write_location");
return BT_GATT_ERR(BT_ATT_ERR_UNLIKELY);
}
@@ -321,8 +321,7 @@
return BT_GATT_ERR(BT_ATT_ERR_VALUE_NOT_ALLOWED);
}
- err = unicast_server_cb->write_location(conn, BT_AUDIO_DIR_SINK,
- location);
+ err = pacs_cb->write_location(conn, BT_AUDIO_DIR_SINK, location);
if (err != 0) {
BT_DBG("write_location returned %d", err);
return BT_GATT_ERR(BT_ATT_ERR_AUTHORIZATION);
@@ -406,8 +405,8 @@
return BT_GATT_ERR(BT_ATT_ERR_INVALID_ATTRIBUTE_LEN);
}
- if (unicast_server_cb == NULL ||
- unicast_server_cb->write_location == NULL) {
+ if (pacs_cb == NULL ||
+ pacs_cb->write_location == NULL) {
BT_WARN("No callback for write_location");
return BT_GATT_ERR(BT_ATT_ERR_UNLIKELY);
}
@@ -418,8 +417,7 @@
return BT_GATT_ERR(BT_ATT_ERR_VALUE_NOT_ALLOWED);
}
- err = unicast_server_cb->write_location(conn, BT_AUDIO_DIR_SOURCE,
- location);
+ err = pacs_cb->write_location(conn, BT_AUDIO_DIR_SOURCE, location);
if (err != 0) {
BT_DBG("write_location returned %d", err);
return BT_GATT_ERR(BT_ATT_ERR_AUTHORIZATION);
@@ -630,7 +628,8 @@
}
#if defined(CONFIG_BT_PAC_SNK_LOC) || defined(CONFIG_BT_PAC_SRC_LOC)
-int bt_pacs_location_changed(enum bt_audio_dir dir)
+/******* PUBLIC API *******/
+int bt_audio_pacs_location_changed(enum bt_audio_dir dir)
{
struct k_work_delayable *work;
@@ -681,3 +680,18 @@
return 0;
}
+
+int bt_audio_pacs_register_cb(const struct bt_audio_pacs_cb *cb)
+{
+ CHECKIF(cb == NULL) {
+ return -EINVAL;
+ }
+
+ if (pacs_cb != NULL) {
+ return -EALREADY;
+ }
+
+ pacs_cb = cb;
+
+ return 0;
+}
diff --git a/subsys/bluetooth/audio/pacs_internal.h b/subsys/bluetooth/audio/pacs_internal.h
index 54880d7..7383412 100644
--- a/subsys/bluetooth/audio/pacs_internal.h
+++ b/subsys/bluetooth/audio/pacs_internal.h
@@ -52,5 +52,3 @@
void bt_pacs_add_capability(enum bt_audio_dir dir);
void bt_pacs_remove_capability(enum bt_audio_dir dir);
-int bt_pacs_location_changed(enum bt_audio_dir dir);
-int bt_pacs_available_contexts_changed(void);
diff --git a/subsys/bluetooth/audio/unicast_server.c b/subsys/bluetooth/audio/unicast_server.c
index de80bb3..b37e566 100644
--- a/subsys/bluetooth/audio/unicast_server.c
+++ b/subsys/bluetooth/audio/unicast_server.c
@@ -51,15 +51,3 @@
return 0;
}
-
-#if defined(CONFIG_BT_PAC_SNK_LOC) || defined(CONFIG_BT_PAC_SRC_LOC)
-int bt_audio_unicast_server_location_changed(enum bt_audio_dir dir)
-{
- return bt_pacs_location_changed(dir);
-}
-#endif /* CONFIG_BT_PAC_SNK_LOC || CONFIG_BT_PAC_SRC_LOC */
-
-int bt_audio_unicast_server_available_contexts_changed(void)
-{
- return bt_pacs_available_contexts_changed();
-}
diff --git a/subsys/bluetooth/shell/audio.c b/subsys/bluetooth/shell/audio.c
index 9e5ba2f..1de6aca 100644
--- a/subsys/bluetooth/shell/audio.c
+++ b/subsys/bluetooth/shell/audio.c
@@ -437,8 +437,11 @@
.stop = lc3_stop,
.release = lc3_release,
};
+#endif /* CONFIG_BT_AUDIO_UNICAST */
+#if defined(CONFIG_BT_AUDIO_UNICAST_SERVER) || defined(CONFIG_BT_AUDIO_BROADCAST_SINK)
static struct bt_audio_capability caps[MAX_PAC] = {
+#if defined(CONFIG_BT_AUDIO_UNICAST_SERVER)
{
.dir = BT_AUDIO_DIR_SOURCE,
.pref = BT_AUDIO_CAPABILITY_PREF(
@@ -448,17 +451,20 @@
.codec = &lc3_codec,
.ops = &lc3_ops,
},
+#endif /* CONFIG_BT_AUDIO_UNICAST_SERVER */
{
.dir = BT_AUDIO_DIR_SINK,
+ .codec = &lc3_codec,
+#if defined(CONFIG_BT_AUDIO_UNICAST_SERVER)
.pref = BT_AUDIO_CAPABILITY_PREF(
BT_AUDIO_CAPABILITY_UNFRAMED_SUPPORTED,
BT_GAP_LE_PHY_2M, 0u, 60u, 20000u, 40000u,
20000u, 40000u),
- .codec = &lc3_codec,
.ops = &lc3_ops,
+#endif /* CONFIG_BT_AUDIO_UNICAST_SERVER */
},
};
-#endif /* CONFIG_BT_AUDIO_UNICAST */
+#endif /* CONFIG_BT_AUDIO_UNICAST_SERVER || CONFIG_BT_AUDIO_BROADCAST_SINK */
#if defined(CONFIG_BT_AUDIO_UNICAST_CLIENT)
static uint8_t stream_dir(const struct bt_audio_stream *stream)
@@ -1355,10 +1361,11 @@
return err;
}
-#if defined(CONFIG_BT_AUDIO_UNICAST)
+#if defined(CONFIG_BT_AUDIO_UNICAST_SERVER) || defined(CONFIG_BT_AUDIO_BROADCAST_SINK)
for (i = 0; i < ARRAY_SIZE(caps); i++) {
bt_audio_capability_register(&caps[i]);
}
+#endif /* CONFIG_BT_AUDIO_UNICAST || CONFIG_BT_AUDIO_BROADCAST_SOURCE */
/* Mark all supported contexts as available */
bt_audio_capability_set_available_contexts(BT_AUDIO_DIR_SINK,
@@ -1366,6 +1373,7 @@
bt_audio_capability_set_available_contexts(BT_AUDIO_DIR_SOURCE,
BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED);
+#if defined(CONFIG_BT_AUDIO_UNICAST)
for (i = 0; i < ARRAY_SIZE(streams); i++) {
bt_audio_stream_cb_register(&streams[i], &stream_ops);
}
diff --git a/tests/bluetooth/bsim_bt/bsim_test_audio/src/broadcast_sink_test.c b/tests/bluetooth/bsim_bt/bsim_test_audio/src/broadcast_sink_test.c
index 3e5759e..7d186b9 100644
--- a/tests/bluetooth/bsim_bt/bsim_test_audio/src/broadcast_sink_test.c
+++ b/tests/bluetooth/bsim_bt/bsim_test_audio/src/broadcast_sink_test.c
@@ -8,6 +8,7 @@
#include <zephyr/bluetooth/bluetooth.h>
#include <zephyr/bluetooth/audio/audio.h>
+#include <zephyr/bluetooth/audio/capabilities.h>
#include "common.h"
extern enum bst_result_t bst_result;
@@ -19,6 +20,9 @@
static struct bt_audio_broadcast_sink *g_sink;
+/* Mandatory support preset by both source and sink */
+static struct bt_audio_lc3_preset preset = BT_AUDIO_LC3_BROADCAST_PRESET_16_2_1;
+
static bool scan_recv_cb(const struct bt_le_scan_recv_info *info,
uint32_t broadcast_id)
{
@@ -90,6 +94,11 @@
.pa_sync_lost = pa_sync_lost_cb
};
+static struct bt_audio_capability capabilities = {
+ .dir = BT_AUDIO_DIR_SINK,
+ .codec = &preset.codec,
+};
+
static int init(void)
{
int err;
@@ -102,6 +111,12 @@
printk("Bluetooth initialized\n");
+ err = bt_audio_capability_register(&capabilities);
+ if (err) {
+ FAIL("Capability register failed (err %d)\n", err);
+ return err;
+ }
+
bt_audio_broadcast_sink_register_cb(&broadcast_sink_cbs);
UNSET_FLAG(broadcaster_found);
