This adds support for BAP broadcast sink, creates a remote endpoint when a
broadcast source is discovered and synchronizes with the source upon
endpoint configuration.
This feature was tested using bluetoothctl with the following commands:
[bluetooth]# endpoint.register 00001851-0000-1000-8000-00805f9b34fb 0x06
[bluetooth]# scan on
[NEW] Endpoint /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/pac_bcast0
[bluetooth]# endpoint.config
/org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/pac_bcast0
/local/endpoint/ep0 16_2_1
---
profiles/audio/bap.c | 313 +++++++++++++++++++++++++++++++++++++++----
1 file changed, 287 insertions(+), 26 deletions(-)
diff --git a/profiles/audio/bap.c b/profiles/audio/bap.c
index 8cbb238ef..5e84e0c27 100644
--- a/profiles/audio/bap.c
+++ b/profiles/audio/bap.c
@@ -34,6 +34,7 @@
#include "lib/hci.h"
#include "lib/sdp.h"
#include "lib/uuid.h"
+#include "lib/iso.h"
#include "src/btd.h"
#include "src/dbus-common.h"
@@ -57,7 +58,9 @@
#define ISO_SOCKET_UUID "6fbaf188-05e0-496a-9885-d6ddfdb4e03e"
#define PACS_UUID_STR "00001850-0000-1000-8000-00805f9b34fb"
+#define BCAAS_UUID_STR "00001852-0000-1000-8000-00805f9b34fb"
#define MEDIA_ENDPOINT_INTERFACE "org.bluez.MediaEndpoint1"
+#define MEDIA_INTERFACE "org.bluez.Media1"
struct bap_ep {
char *path;
@@ -186,6 +189,9 @@ static gboolean get_uuid(const GDBusPropertyTable *property,
uuid = PAC_SINK_UUID;
else if (queue_find(ep->data->srcs, NULL, ep))
uuid = PAC_SOURCE_UUID;
+ else if ((queue_find(ep->data->bcast, NULL, ep)
+ && (bt_bap_pac_get_type(ep->lpac) == BT_BAP_BCAST_SINK)))
+ uuid = BCAA_SERVICE_UUID;
else
uuid = BAA_SERVICE_UUID;
@@ -207,6 +213,19 @@ static gboolean get_codec(const GDBusPropertyTable *property,
return TRUE;
}
+static gboolean has_capabilities(const GDBusPropertyTable *property, void *data)
+{
+ struct bap_ep *ep = data;
+ struct iovec *d = NULL;
+
+ bt_bap_pac_get_codec(ep->rpac, NULL, &d, NULL);
+
+ if (d)
+ return TRUE;
+
+ return FALSE;
+}
+
static gboolean get_capabilities(const GDBusPropertyTable *property,
DBusMessageIter *iter, void *data)
{
@@ -248,7 +267,7 @@ static const GDBusPropertyTable ep_properties[] = {
G_DBUS_PROPERTY_FLAG_EXPERIMENTAL },
{ "Codec", "y", get_codec, NULL, NULL,
G_DBUS_PROPERTY_FLAG_EXPERIMENTAL },
- { "Capabilities", "ay", get_capabilities, NULL, NULL,
+ { "Capabilities", "ay", get_capabilities, NULL, has_capabilities,
G_DBUS_PROPERTY_FLAG_EXPERIMENTAL },
{ "Device", "o", get_device, NULL, NULL,
G_DBUS_PROPERTY_FLAG_EXPERIMENTAL },
@@ -556,7 +575,7 @@ static DBusMessage *set_configuration(DBusConnection *conn, DBusMessage *msg,
}
if (bt_bap_pac_get_type(ep->lpac) == BT_BAP_BCAST_SOURCE) {
- /* Mark CIG and CIS to be auto assigned */
+ /* Mark BIG and BIS to be auto assigned */
ep->qos.bcast.big = BT_ISO_QOS_BIG_UNSET;
ep->qos.bcast.bis = BT_ISO_QOS_BIS_UNSET;
} else {
@@ -597,13 +616,126 @@ static DBusMessage *set_configuration(DBusConnection *conn, DBusMessage *msg,
break;
case BT_BAP_STREAM_TYPE_BCAST:
/* No message sent over the air for broadcast */
- ep->id = 0;
+ if (bt_bap_pac_get_type(ep->lpac) == BT_BAP_BCAST_SINK)
+ ep->msg = dbus_message_ref(msg);
+ else
+ ep->id = 0;
+
return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
}
return NULL;
}
+static void update_bcast_qos(struct bt_iso_qos *qos,
+ struct bt_bap_qos *bap_qos)
+{
+ bap_qos->bcast.big = qos->bcast.big;
+ bap_qos->bcast.bis = qos->bcast.bis;
+ bap_qos->bcast.sync_interval = qos->bcast.sync_interval;
+ bap_qos->bcast.packing = qos->bcast.packing;
+ bap_qos->bcast.framing = qos->bcast.framing;
+ bap_qos->bcast.encryption = qos->bcast.encryption;
+ bap_qos->bcast.options = qos->bcast.options;
+ bap_qos->bcast.skip = qos->bcast.skip;
+ bap_qos->bcast.sync_timeout = qos->bcast.sync_timeout;
+ bap_qos->bcast.sync_cte_type = qos->bcast.sync_cte_type;
+ bap_qos->bcast.mse = qos->bcast.mse;
+ bap_qos->bcast.timeout = qos->bcast.timeout;
+ bap_qos->bcast.io_qos.interval = qos->bcast.in.interval;
+ bap_qos->bcast.io_qos.latency = qos->bcast.in.latency;
+ bap_qos->bcast.io_qos.phy = qos->bcast.in.phy;
+ bap_qos->bcast.io_qos.sdu = qos->bcast.in.sdu;
+ bap_qos->bcast.io_qos.rtn = qos->bcast.in.rtn;
+
+ bap_qos->bcast.bcode = new0(struct iovec, 1);
+ util_iov_memcpy(bap_qos->bcast.bcode, qos->bcast.bcode,
+ sizeof(qos->bcast.bcode));
+}
+
+static bool match_ep_type(const void *data, const void *user_data)
+{
+ const struct bap_ep *ep = data;
+
+ return (bt_bap_pac_get_type(ep->lpac) == PTR_TO_INT(user_data));
+}
+
+static void iso_bcast_confirm_cb(GIOChannel *io, GError *err, void *user_data)
+{
+ struct bap_data *data = user_data;
+ struct bt_iso_qos qos;
+ struct bt_iso_base base;
+ char address[18];
+ struct bap_ep *ep;
+ int fd;
+ struct iovec *base_io;
+ uint32_t presDelay;
+ uint8_t numSubgroups;
+ uint8_t numBis;
+ struct bt_bap_codec codec;
+
+ bt_io_get(io, &err,
+ BT_IO_OPT_DEST, address,
+ BT_IO_OPT_QOS, &qos,
+ BT_IO_OPT_BASE, &base,
+ BT_IO_OPT_INVALID);
+ if (err) {
+ error("%s", err->message);
+ g_error_free(err);
+ goto drop;
+ }
+
+ g_io_channel_ref(io);
+ btd_service_connecting_complete(data->service, 0);
+ DBG("BCAST ISO: sync with %s (BIG 0x%02x BIS 0x%02x)",
+ address, qos.bcast.big, qos.bcast.bis);
+
+ ep = queue_find(data->bcast, match_ep_type,
+ INT_TO_PTR(BT_BAP_BCAST_SINK));
+ if (!ep)
+ return;
+
+ update_bcast_qos(&qos, &ep->qos);
+
+ base_io = new0(struct iovec, 1);
+ util_iov_memcpy(base_io, base.base, base.base_len);
+
+ bap_parse_base(base_io->iov_base, base_io->iov_len, bap_debug,
+ &presDelay, &numSubgroups, &numBis,
+ &codec, &ep->caps, &ep->metadata);
+
+ /* Update pac with BASE information */
+ bt_bap_update_bcast_source(ep->rpac, &codec, ep->caps, ep->metadata);
+ ep->id = bt_bap_stream_config(ep->stream, &ep->qos,
+ ep->caps, NULL, NULL);
+ data->listen_io = io;
+
+ bt_bap_stream_set_user_data(ep->stream, ep->path);
+
+ fd = g_io_channel_unix_get_fd(io);
+
+ if (bt_bap_stream_set_io(ep->stream, fd)) {
+ bt_bap_stream_enable(ep->stream, true, NULL, NULL, NULL);
+ g_io_channel_set_close_on_unref(io, FALSE);
+ return;
+ }
+
+
+ return;
+
+drop:
+ g_io_channel_shutdown(io, TRUE, NULL);
+
+}
+
+static bool match_data_bap_data(const void *data, const void *match_data)
+{
+ const struct bap_data *bdata = data;
+ const struct btd_adapter *adapter = match_data;
+
+ return bdata->user_data == adapter;
+}
+
static const GDBusMethodTable ep_methods[] = {
{ GDBUS_EXPERIMENTAL_ASYNC_METHOD("SetConfiguration",
GDBUS_ARGS({ "endpoint", "o" },
@@ -649,15 +781,17 @@ static struct bap_ep *ep_register_bcast(struct bap_data *data,
struct bt_bap_pac *lpac,
struct bt_bap_pac *rpac)
{
- struct btd_adapter *adapter = data->user_data;
+ struct btd_adapter *adapter = data->adapter;
+ struct btd_device *device = data->device;
struct bap_ep *ep;
struct queue *queue;
- int i, err;
+ int i, err = 0;
const char *suffix;
struct match_ep match = { lpac, rpac };
switch (bt_bap_pac_get_type(rpac)) {
case BT_BAP_BCAST_SOURCE:
+ case BT_BAP_BCAST_SINK:
queue = data->bcast;
i = queue_length(data->bcast);
suffix = "bcast";
@@ -675,8 +809,20 @@ static struct bap_ep *ep_register_bcast(struct bap_data *data,
ep->lpac = lpac;
ep->rpac = rpac;
- err = asprintf(&ep->path, "%s/pac_%s%d", adapter_get_path(adapter),
- suffix, i);
+ if (device)
+ ep->data->device = device;
+
+ switch (bt_bap_pac_get_type(rpac)) {
+ case BT_BAP_BCAST_SINK:
+ err = asprintf(&ep->path, "%s/pac_%s%d",
+ adapter_get_path(adapter), suffix, i);
+ break;
+ case BT_BAP_BCAST_SOURCE:
+ err = asprintf(&ep->path, "%s/pac_%s%d",
+ device_get_path(device), suffix, i);
+ break;
+ }
+
if (err < 0) {
error("Could not allocate path for remote pac %s/pac%d",
adapter_get_path(adapter), i);
@@ -685,14 +831,13 @@ static struct bap_ep *ep_register_bcast(struct bap_data *data,
}
if (g_dbus_register_interface(btd_get_dbus_connection(),
- ep->path, MEDIA_ENDPOINT_INTERFACE,
- ep_methods, NULL, ep_properties,
- ep, ep_free) == FALSE) {
+ ep->path, MEDIA_ENDPOINT_INTERFACE,
+ ep_methods, NULL, ep_properties,
+ ep, ep_free) == FALSE) {
error("Could not register remote ep %s", ep->path);
ep_free(ep);
return NULL;
}
-
bt_bap_pac_set_user_data(rpac, ep->path);
DBG("ep %p lpac %p rpac %p path %s", ep, ep->lpac, ep->rpac, ep->path);
@@ -824,6 +969,7 @@ done:
queue_foreach(ep->data->srcs, bap_config, NULL);
queue_foreach(ep->data->snks, bap_config, NULL);
+ queue_foreach(ep->data->bcast, bap_config, NULL);
}
static bool pac_found(struct bt_bap_pac *lpac, struct bt_bap_pac *rpac,
@@ -1310,6 +1456,45 @@ static void bap_listen_io(struct bap_data *data, struct bt_bap_stream *stream,
data->listen_io = io;
}
+static void bap_listen_io_broadcast(struct bap_data *data, struct bap_ep *ep,
+ struct bt_bap_stream *stream, struct bt_iso_qos *qos)
+{
+ GIOChannel *io;
+ GError *err = NULL;
+ struct sockaddr_iso_bc iso_bc_addr;
+
+ iso_bc_addr.bc_bdaddr_type = btd_device_get_bdaddr_type(data->device);
+ memcpy(&iso_bc_addr.bc_bdaddr, device_get_address(data->device),
+ sizeof(bdaddr_t));
+ iso_bc_addr.bc_bis[0] = 1;
+ iso_bc_addr.bc_num_bis = 1;
+
+ DBG("stream %p", stream);
+
+ /* If IO already set skip creating it again */
+ if (bt_bap_stream_get_io(stream) || data->listen_io)
+ return;
+
+ io = bt_io_listen(iso_bcast_confirm_cb, NULL, ep->data, NULL, &err,
+ BT_IO_OPT_SOURCE_BDADDR,
+ btd_adapter_get_address(ep->data->adapter),
+ BT_IO_OPT_DEST_BDADDR,
+ device_get_address(data->device),
+ BT_IO_OPT_DEST_TYPE,
+ btd_device_get_bdaddr_type(data->device),
+ BT_IO_OPT_MODE, BT_IO_MODE_ISO,
+ BT_IO_OPT_QOS, &qos->bcast,
+ BT_IO_OPT_ISO_BC_NUM_BIS, iso_bc_addr.bc_num_bis,
+ BT_IO_OPT_ISO_BC_BIS, iso_bc_addr.bc_bis,
+ BT_IO_OPT_INVALID);
+ if (!io) {
+ error("%s", err->message);
+ g_error_free(err);
+ }
+
+ ep->data->listen_io = io;
+
+}
static void bap_create_ucast_io(struct bap_data *data, struct bap_ep *ep,
struct bt_bap_stream *stream, int defer)
{
@@ -1364,10 +1549,10 @@ static void bap_create_bcast_io(struct bap_data *data, struct bap_ep *ep,
memcpy(&iso_qos.bcast.out, &ep->qos.bcast.io_qos,
sizeof(struct bt_iso_io_qos));
done:
- if (ep)
+ if (bt_bap_pac_get_type(ep->lpac) == BT_BAP_BCAST_SOURCE)
bap_connect_io_broadcast(data, ep, stream, &iso_qos);
else
- bap_listen_io(data, stream, &iso_qos);
+ bap_listen_io_broadcast(data, ep, stream, &iso_qos);
}
static void bap_create_io(struct bap_data *data, struct bap_ep *ep,
@@ -1417,6 +1602,11 @@ static void bap_state(struct bt_bap_stream *stream, uint8_t old_state,
break;
case BT_BAP_STREAM_STATE_CONFIG:
if (ep && !ep->id) {
+ if
+ (bt_bap_pac_get_type(ep->lpac) == BT_BAP_BCAST_SINK) {
+ bap_create_bcast_io(data, ep, stream, true);
+ return;
+ }
bap_create_io(data, ep, stream, true);
if (!ep->io) {
error("Unable to create io");
@@ -1424,7 +1614,6 @@ static void bap_state(struct bt_bap_stream *stream, uint8_t old_state,
return;
}
-
if (bt_bap_stream_get_type(stream) ==
BT_BAP_STREAM_TYPE_UCAST) {
/* Wait QoS response to respond */
@@ -1475,12 +1664,12 @@ static void pac_added_broadcast(struct bt_bap_pac *pac, void *user_data)
{
struct bap_data *data = user_data;
- if (bt_bap_pac_get_type(pac) == BT_BAP_BCAST_SOURCE) {
- DBG("pac %p", pac);
-
+ if (bt_bap_pac_get_type(pac) == BT_BAP_BCAST_SOURCE)
bt_bap_foreach_pac(data->bap, BT_BAP_BCAST_SOURCE,
pac_found_bcast, data);
- }
+ else if (bt_bap_pac_get_type(pac) == BT_BAP_BCAST_SINK)
+ bt_bap_foreach_pac(data->bap, BT_BAP_BCAST_SINK,
+ pac_found_bcast, data);
}
static bool ep_match_pac(const void *data, const void *match_data)
@@ -1596,14 +1785,6 @@ static bool match_data(const void *data, const void *match_data)
return bdata->bap == bap;
}
-static bool match_data_bap_data(const void *data, const void *match_data)
-{
- const struct bap_data *bdata = data;
- const struct btd_adapter *adapter = match_data;
-
- return bdata->user_data == adapter;
-}
-
static bool io_get_qos(GIOChannel *io, struct bt_iso_qos *qos)
{
GError *err = NULL;
@@ -1733,6 +1914,71 @@ static void bap_detached(struct bt_bap *bap, void *user_data)
bap_data_remove(data);
}
+static int bap_bcast_probe(struct btd_service *service)
+{
+ struct btd_device *device = btd_service_get_device(service);
+ struct btd_adapter *adapter = device_get_adapter(device);
+ struct btd_gatt_database *database = btd_adapter_get_database(adapter);
+ struct bap_data *data = btd_service_get_user_data(service);
+ char addr[18];
+
+ ba2str(device_get_address(device), addr);
+
+ if (!btd_adapter_has_exp_feature(adapter, EXP_FEAT_ISO_SOCKET)) {
+ error("BAP requires ISO Socket which is not enabled");
+ return -ENOTSUP;
+ }
+
+ /* Ignore, if we were probed for this device already */
+ if (data) {
+ error("Profile probed twice for the same device!");
+ return -EINVAL;
+ }
+
+ data = bap_data_new(device);
+ data->service = service;
+ data->adapter = adapter;
+ data->device = device;
+
+ data->bap = bt_bap_new(btd_gatt_database_get_db(database),
+ btd_gatt_database_get_db(database));
+ if (!data->bap) {
+ error("Unable to create BAP instance");
+ free(data);
+ return -EINVAL;
+ }
+
+ bap_data_add(data);
+
+ data->ready_id = bt_bap_ready_register(data->bap, bap_ready, service,
+ NULL);
+ data->state_id = bt_bap_state_register(data->bap, bap_state,
+ bap_connecting, data, NULL);
+ data->pac_id = bt_bap_pac_register(data->bap, pac_added_broadcast,
+ pac_removed_broadcast, data, NULL);
+
+ bt_bap_set_user_data(data->bap, service);
+
+ bt_bap_new_bcast_source(data->bap, device_get_path(device));
+ return 0;
+}
+
+static void bap_bcast_remove(struct btd_service *service)
+{
+ struct btd_device *device = btd_service_get_device(service);
+ struct bap_data *data;
+ char addr[18];
+
+ ba2str(device_get_address(device), addr);
+ DBG("%s", addr);
+
+ data = btd_service_get_user_data(service);
+ if (!data) {
+ error("BAP service not handled by profile");
+ return;
+ }
+}
+
static int bap_probe(struct btd_service *service)
{
struct btd_device *device = btd_service_get_device(service);
@@ -1901,6 +2147,17 @@ static struct btd_profile bap_profile = {
.experimental = true,
};
+static struct btd_profile bap_bcast_profile = {
+ .name = "bcaa",
+ .priority = BTD_PROFILE_PRIORITY_MEDIUM,
+ .remote_uuid = BCAAS_UUID_STR,
+ .device_probe = bap_bcast_probe,
+ .device_remove = bap_bcast_remove,
+ .auto_connect = false,
+ .experimental = true,
+ .probe_on_discover = true,
+};
+
static unsigned int bap_id = 0;
static int bap_init(void)
@@ -1911,6 +2168,10 @@ static int bap_init(void)
if (err)
return err;
+ err = btd_profile_register(&bap_bcast_profile);
+ if (err)
+ return err;
+
bap_id = bt_bap_register(bap_attached, bap_detached, NULL);
return 0;
--
2.34.1
