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Wed, 7 Jun 2023 08:23:19 +0000 From: Silviu Florian Barbulescu To: linux-bluetooth@vger.kernel.org Cc: Silviu Florian Barbulescu Subject: [PATCH v4 3/4] This adds the initial code for BAP broadcast source Date: Wed, 7 Jun 2023 11:22:59 +0300 Message-Id: <20230607082300.4970-4-silviu.barbulescu@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230607082300.4970-1-silviu.barbulescu@nxp.com> References: <20230607082300.4970-1-silviu.barbulescu@nxp.com> X-ClientProxiedBy: AM4PR0101CA0083.eurprd01.prod.exchangelabs.com (2603:10a6:200:41::51) To VI1PR04MB5344.eurprd04.prod.outlook.com (2603:10a6:803:4b::31) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: VI1PR04MB5344:EE_|DB8PR04MB7114:EE_ X-MS-Office365-Filtering-Correlation-Id: 90dd976e-3b01-4d73-f0f3-08db67307379 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; 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struct queue *sinks; struct queue *sources; + struct queue *broadcast_sources; + struct queue *broadcast_sinks; }; struct bt_bap_req { @@ -623,6 +625,18 @@ static struct bt_bap_endpoint *bap_endpoint_new(struct bt_bap_db *bdb, return ep; } +static struct bt_bap_endpoint *bap_endpoint_new_broacast(struct bt_bap_db *bdb) +{ + struct bt_bap_endpoint *ep; + + ep = new0(struct bt_bap_endpoint, 1); + ep->bdb = bdb; + ep->attr = NULL; + ep->dir = BT_BAP_BCAST_SOURCE; + + return ep; +} + static struct bt_bap_endpoint *bap_get_endpoint(struct queue *endpoints, struct bt_bap_db *db, struct gatt_db_attribute *attr) @@ -645,6 +659,30 @@ static struct bt_bap_endpoint *bap_get_endpoint(struct queue *endpoints, return ep; } +static struct bt_bap_endpoint *bap_get_endpoint_bcast(struct queue *endpoints, + struct bt_bap_db *db) +{ + struct bt_bap_endpoint *ep; + + if (!db) + return NULL; + /* + * We have support for only one stream so we will have + * only one endpoint. + * TO DO add support for more then one stream + */ + if (queue_length(endpoints) > 0) + return queue_peek_head(endpoints); + + ep = bap_endpoint_new_broacast(db); + if (!ep) + return NULL; + + queue_push_tail(endpoints, ep); + + return ep; +} + static bool bap_endpoint_match_id(const void *data, const void *match_data) { const struct bt_bap_endpoint *ep = data; @@ -1261,6 +1299,37 @@ static void bap_stream_state_changed(struct bt_bap_stream *stream) bt_bap_unref(bap); } +static void stream_set_state_broadcast(struct bt_bap_stream *stream, + uint8_t state) +{ + struct bt_bap_endpoint *ep = stream->ep; + struct bt_bap *bap = stream->bap; + const struct queue_entry *entry; + + ep->old_state = ep->state; + ep->state = state; + + bt_bap_ref(bap); + + for (entry = queue_get_entries(bap->state_cbs); entry; + entry = entry->next) { + struct bt_bap_state *state = entry->data; + + if (state->func) + state->func(stream, stream->ep->old_state, + stream->ep->state, state->data); + } + + /* Post notification updates */ + switch (stream->ep->state) { + case BT_ASCS_ASE_STATE_IDLE: + bap_stream_detach(stream); + break; + } + + bt_bap_unref(bap); +} + static void stream_set_state(struct bt_bap_stream *stream, uint8_t state) { struct bt_bap_endpoint *ep = stream->ep; @@ -1397,6 +1466,11 @@ static void ep_config_cb(struct bt_bap_stream *stream, int err) if (err) return; + if (bt_bap_stream_get_type(stream) == BT_BAP_STREAM_TYPE_BROADCAST) { + stream_set_state_broadcast(stream, BT_BAP_STREAM_STATE_CONFIG); + return; + } + stream_set_state(stream, BT_BAP_STREAM_STATE_CONFIG); } @@ -2222,6 +2296,8 @@ static struct bt_bap_db *bap_db_new(struct gatt_db *db) bdb->db = gatt_db_ref(db); bdb->sinks = queue_new(); bdb->sources = queue_new(); + bdb->broadcast_sources = queue_new(); + bdb->broadcast_sinks = queue_new(); if (!bap_db) bap_db = queue_new(); @@ -2397,6 +2473,16 @@ static void bap_add_source(struct bt_bap_pac *pac) iov.iov_len, NULL); } +static void bap_add_broadcast_source(struct bt_bap_pac *pac) +{ + queue_push_tail(pac->bdb->broadcast_sources, pac); +} + +static void bap_add_broadcast_sink(struct bt_bap_pac *pac) +{ + queue_push_tail(pac->bdb->broadcast_sinks, pac); +} + static void notify_pac_added(void *data, void *user_data) { struct bt_bap_pac_changed *changed = data; @@ -2421,7 +2507,7 @@ struct bt_bap_pac *bt_bap_add_vendor_pac(struct gatt_db *db, struct iovec *metadata) { struct bt_bap_db *bdb; - struct bt_bap_pac *pac; + struct bt_bap_pac *pac, *pac_brodcast_sink; struct bt_bap_codec codec; if (!db) @@ -2447,6 +2533,13 @@ struct bt_bap_pac *bt_bap_add_vendor_pac(struct gatt_db *db, case BT_BAP_SOURCE: bap_add_source(pac); break; + case BT_BAP_BCAST_SOURCE: + // For broadcast add local pac and remote pac + bap_add_broadcast_source(pac); + pac_brodcast_sink = bap_pac_new(bdb, name, type, &codec, qos, + data, metadata); + bap_add_broadcast_sink(pac_brodcast_sink); + break; default: bap_pac_free(pac); return NULL; @@ -2489,6 +2582,21 @@ uint32_t bt_bap_pac_get_locations(struct bt_bap_pac *pac) } } +uint8_t bt_bap_stream_get_type(struct bt_bap_stream *stream) +{ + if (!stream) + return BT_BAP_STREAM_TYPE_UNKNOWN; + + if ((bt_bap_pac_get_type(stream->lpac) == BT_BAP_SINK) || + (bt_bap_pac_get_type(stream->lpac) == BT_BAP_SOURCE)) + return BT_BAP_STREAM_TYPE_UNICAST; + else if ((bt_bap_pac_get_type(stream->lpac) == BT_BAP_BCAST_SOURCE) || + (bt_bap_pac_get_type(stream->lpac) == BT_BAP_BCAST_SINK)) + return BT_BAP_STREAM_TYPE_BROADCAST; + else + return BT_BAP_STREAM_TYPE_UNKNOWN; +} + static void notify_pac_removed(void *data, void *user_data) { struct bt_bap_pac_changed *changed = data; @@ -2547,6 +2655,9 @@ bool bt_bap_remove_pac(struct bt_bap_pac *pac) if (queue_remove_if(pac->bdb->sources, NULL, pac)) goto found; + if (queue_remove_if(pac->bdb->broadcast_sources, NULL, pac)) + goto found; + return false; found: @@ -3867,6 +3978,25 @@ clone: return true; } +bool bt_bap_attach_broadcast(struct bt_bap *bap) +{ + struct bt_bap_endpoint *ep; + + if (queue_find(sessions, NULL, bap)) + return true; + + if (!sessions) + sessions = queue_new(); + + queue_push_tail(sessions, bap); + + ep = bap_get_endpoint_bcast(bap->remote_eps, bap->ldb); + if (ep) + ep->bap = bap; + + return true; +} + static void stream_foreach_detach(void *data, void *user_data) { struct bt_bap_stream *stream = data; @@ -4071,7 +4201,11 @@ void bt_bap_foreach_pac(struct bt_bap *bap, uint8_t type, func, user_data); case BT_BAP_SOURCE: return bap_foreach_pac(bap->ldb->sinks, bap->rdb->sources, - func, user_data); + func, user_data); + case BT_BAP_BCAST_SOURCE: + return bap_foreach_pac(bap->ldb->broadcast_sources, + bap->ldb->broadcast_sinks, + func, user_data); } } @@ -4184,42 +4318,51 @@ unsigned int bt_bap_stream_config(struct bt_bap_stream *stream, if (!bap_stream_valid(stream)) return 0; - if (!stream->client) { - stream_config(stream, data, NULL); - return 0; - } + if (bt_bap_stream_get_type(stream) == BT_BAP_STREAM_TYPE_UNICAST) { + if (!stream->client) { + stream_config(stream, data, NULL); + return 0; + } - memset(&config, 0, sizeof(config)); + memset(&config, 0, sizeof(config)); - config.ase = stream->ep->id; - config.latency = qos->ucast.target_latency; - config.phy = qos->ucast.io_qos.phy; - config.codec = stream->rpac->codec; + config.ase = stream->ep->id; + config.latency = qos->ucast.target_latency; + config.phy = qos->ucast.io_qos.phy; + config.codec = stream->rpac->codec; - iov[0].iov_base = &config; - iov[0].iov_len = sizeof(config); + iov[0].iov_base = &config; + iov[0].iov_len = sizeof(config); - if (data) { - if (!bap_print_cc(data->iov_base, data->iov_len, - stream->bap->debug_func, - stream->bap->debug_data)) - return 0; + if (data) { + if (!bap_print_cc(data->iov_base, data->iov_len, + stream->bap->debug_func, + stream->bap->debug_data)) + return 0; - config.cc_len = data->iov_len; - iov[1] = *data; - iovlen++; - } + config.cc_len = data->iov_len; + iov[1] = *data; + iovlen++; + } - req = bap_req_new(stream, BT_ASCS_CONFIG, iov, iovlen, func, user_data); + req = bap_req_new(stream, BT_ASCS_CONFIG, iov, iovlen, + func, user_data); - if (!bap_queue_req(stream->bap, req)) { - bap_req_free(req); - return 0; - } + if (!bap_queue_req(stream->bap, req)) { + bap_req_free(req); + return 0; + } - stream->qos = *qos; + stream->qos = *qos; - return req->id; + return req->id; + } else if (bt_bap_stream_get_type(stream) == + BT_BAP_STREAM_TYPE_BROADCAST) { + stream->qos = *qos; + return 1; + } else { + return 0; + } } static bool match_pac(struct bt_bap_pac *lpac, struct bt_bap_pac *rpac, @@ -4345,6 +4488,10 @@ bool bt_bap_stream_set_user_data(struct bt_bap_stream *stream, void *user_data) stream->user_data = user_data; + if (bt_bap_stream_get_type(stream) == BT_BAP_STREAM_TYPE_BROADCAST) + stream->lpac->ops->config(stream, stream->cc, &stream->qos, + ep_config_cb, stream->lpac->user_data); + return true; } @@ -4454,7 +4601,7 @@ unsigned int bt_bap_stream_enable(struct bt_bap_stream *stream, bt_bap_stream_func_t func, void *user_data) { - int ret; + int ret = 0; /* Table 3.2: ASE state machine transition * Initiating device - client Only @@ -4462,12 +4609,19 @@ unsigned int bt_bap_stream_enable(struct bt_bap_stream *stream, if (!bap_stream_valid(stream) || !stream->client) return 0; - ret = bap_stream_metadata(stream, BT_ASCS_ENABLE, metadata, func, - user_data); - if (!ret || !enable_links) - return ret; + if (bt_bap_stream_get_type(stream) == BT_BAP_STREAM_TYPE_UNICAST) { + ret = bap_stream_metadata(stream, BT_ASCS_ENABLE, metadata, + func, user_data); + if (!ret || !enable_links) + return ret; - queue_foreach(stream->links, bap_stream_enable_link, metadata); + queue_foreach(stream->links, bap_stream_enable_link, metadata); + } else if (bt_bap_stream_get_type(stream) == + BT_BAP_STREAM_TYPE_BROADCAST) { + stream_set_state_broadcast(stream, + BT_BAP_STREAM_STATE_STREAMING); + return 1; + } return ret; } @@ -4646,6 +4800,16 @@ unsigned int bt_bap_stream_release(struct bt_bap_stream *stream, bap = stream->bap; + /* If stream is broadcast, no BT_ASCS_RELEASE is required */ + if (bt_bap_stream_get_type(stream) == BT_BAP_STREAM_TYPE_BROADCAST) { + if (!bap_stream_valid(stream)) { + stream_set_state_broadcast(stream, + BT_BAP_STREAM_STATE_IDLE); + stream = NULL; + } + return 0; + } + /* If stream does not belong to a client session, clean it up now */ if (!bap_stream_valid(stream)) { stream_set_state(stream, BT_BAP_STREAM_STATE_IDLE); @@ -4681,8 +4845,13 @@ uint32_t bt_bap_stream_get_location(struct bt_bap_stream *stream) if (stream->ep->dir == BT_BAP_SOURCE) return pacs->source_loc_value; - else + else if (stream->ep->dir == BT_BAP_SINK) return pacs->sink_loc_value; + else + /* TO DO get the location values from metadata + * for brodcast source and sink + */ + return stream->bap->ldb->pacs->source_loc_value; } struct iovec *bt_bap_stream_get_config(struct bt_bap_stream *stream) diff --git a/src/shared/bap.h b/src/shared/bap.h index 0c42e730f..891b4b5d8 100644 --- a/src/shared/bap.h +++ b/src/shared/bap.h @@ -17,6 +17,12 @@ #define BT_BAP_SINK 0x01 #define BT_BAP_SOURCE 0x02 +#define BT_BAP_BCAST_SOURCE 0x03 +#define BT_BAP_BCAST_SINK 0x04 + +#define BT_BAP_STREAM_TYPE_UNICAST 0x01 +#define BT_BAP_STREAM_TYPE_BROADCAST 0x02 +#define BT_BAP_STREAM_TYPE_UNKNOWN 0x03 #define BT_BAP_STREAM_STATE_IDLE 0x00 #define BT_BAP_STREAM_STATE_CONFIG 0x01 @@ -160,6 +166,8 @@ uint8_t bt_bap_pac_get_type(struct bt_bap_pac *pac); uint32_t bt_bap_pac_get_locations(struct bt_bap_pac *pac); +uint8_t bt_bap_stream_get_type(struct bt_bap_stream *stream); + struct bt_bap_stream *bt_bap_pac_get_stream(struct bt_bap_pac *pac); /* Session related function */ @@ -179,6 +187,7 @@ struct bt_bap *bt_bap_ref(struct bt_bap *bap); void bt_bap_unref(struct bt_bap *bap); bool bt_bap_attach(struct bt_bap *bap, struct bt_gatt_client *client); +bool bt_bap_attach_broadcast(struct bt_bap *bap); void bt_bap_detach(struct bt_bap *bap); bool bt_bap_set_debug(struct bt_bap *bap, bt_bap_debug_func_t cb,