tests: Bluetooth: Tester: Audio: Adds BRS

This commit adds API to tester to allow exposing of Broadcast Receive
State.

Signed-off-by: Omkar Kulkarni <[email protected]>

Author: omkar3141

subsys/bluetooth/audio/bap_scan_delegator.c

@@ -1620,6 +1620,7 @@ int bt_bap_scan_delegator_add_src(const struct bt_bap_scan_delegator_add_src_par
 	state->pa_sync_state = param->pa_state;
 	state->encrypt_state = param->encrypt_state;
 	state->num_subgroups = param->num_subgroups;
+
 	if (state->num_subgroups > 0U) {
 		(void)memcpy(state->subgroups, param->subgroups,
 			     sizeof(state->subgroups));

tests/bluetooth/tester/src/audio/btp/btp_bap.h

@@ -202,6 +202,20 @@ struct btp_bap_broadcast_source_setup_v2_rp {
 	uint32_t gap_settings;
 } __packed;
 
+#define BTP_BAP_SCAN_DELEGATOR_ADD_SRC	0x1a
+struct btp_bap_scan_delegator_add_src_cmd {
+	bt_addr_le_t broadcaster_address;
+	uint8_t advertiser_sid;
+	uint8_t broadcast_id[BT_AUDIO_BROADCAST_ID_SIZE];
+	uint8_t pa_sync_state;
+	uint8_t big_encryption;
+	uint8_t num_subgroups;
+	uint8_t subgroups[];
+} __packed;
+struct btp_bap_scan_delegator_add_src_rp {
+	uint8_t src_id;
+} __packed;
+
 /* BAP events */
 #define BTP_BAP_EV_DISCOVERY_COMPLETED		0x80
 struct btp_bap_discovery_completed_ev {

tests/bluetooth/tester/src/audio/btp_bap.c

@@ -474,6 +474,11 @@ static const struct btp_handler bap_handlers[] = {
 		.expect_len = sizeof(struct btp_bap_send_past_cmd),
 		.func = btp_bap_broadcast_assistant_send_past,
 	},
+	{
+		.opcode = BTP_BAP_SCAN_DELEGATOR_ADD_SRC,
+		.expect_len = BTP_HANDLER_LENGTH_VARIABLE,
+		.func = btp_bap_scan_delegator_add_src,
+	},
 #endif /* CONFIG_BT_BAP_BROADCAST_SOURCE || CONFIG_BT_BAP_BROADCAST_SINK */
 };
 

tests/bluetooth/tester/src/audio/btp_bap_broadcast.c

@@ -1833,6 +1833,71 @@ uint8_t btp_bap_broadcast_assistant_send_past(const void *cmd, uint16_t cmd_len,
 	return BTP_STATUS_SUCCESS;
 }
 
+uint8_t btp_bap_scan_delegator_add_src(const void *cmd, uint16_t cmd_len, void *rsp,
+				       uint16_t *rsp_len)
+{
+	const struct btp_bap_scan_delegator_add_src_cmd *cp = cmd;
+	struct btp_bap_scan_delegator_add_src_rp *rp = rsp;
+	struct bt_bap_scan_delegator_add_src_param param = {0};
+	struct net_buf_simple buf;
+	int err;
+
+	if (cmd_len < sizeof(*cp)) {
+		return BTP_STATUS_FAILED;
+	}
+
+	if (cp->num_subgroups > CONFIG_BT_BAP_BASS_MAX_SUBGROUPS) {
+		return BTP_STATUS_FAILED;
+	}
+
+	if (cp->big_encryption > BT_BAP_BIG_ENC_STATE_BAD_CODE) {
+		return BTP_STATUS_FAILED;
+	}
+
+	bt_addr_le_copy(&param.addr, &cp->broadcaster_address);
+	param.sid = cp->advertiser_sid;
+	param.pa_state = (enum bt_bap_pa_state)cp->pa_sync_state;
+	param.encrypt_state = (enum bt_bap_big_enc_state)cp->big_encryption;
+	param.broadcast_id = sys_get_le24(cp->broadcast_id);
+	param.num_subgroups = cp->num_subgroups;
+
+	net_buf_simple_init_with_data(&buf, (void *)cp->subgroups, cmd_len - sizeof(*cp));
+
+	for (uint8_t i = 0; i < param.num_subgroups; i++) {
+		struct bt_bap_bass_subgroup *subgroup = &param.subgroups[i];
+
+		/* If remaining data is less than the necessary subgroup fields, return failed */
+		if (buf.len < sizeof(subgroup->bis_sync) + sizeof(subgroup->metadata_len)) {
+			return BTP_STATUS_FAILED;
+		}
+
+		subgroup->bis_sync = net_buf_simple_pull_le32(&buf);
+		subgroup->metadata_len = net_buf_simple_pull_u8(&buf);
+
+		if (subgroup->metadata_len > sizeof(subgroup->metadata) ||
+		    subgroup->metadata_len > buf.len) {
+			return BTP_STATUS_FAILED;
+		}
+
+		memcpy(subgroup->metadata, net_buf_simple_pull_mem(&buf, subgroup->metadata_len),
+		       subgroup->metadata_len);
+	}
+
+	if (buf.len != 0U) {
+		return BTP_STATUS_FAILED;
+	}
+
+	err = bt_bap_scan_delegator_add_src(&param);
+	if (err < 0) {
+		return BTP_STATUS_VAL(err);
+	}
+
+	rp->src_id = (uint8_t)err;
+	*rsp_len = sizeof(*rp);
+
+	return BTP_STATUS_SUCCESS;
+}
+
 static bool broadcast_inited;
 
 int btp_bap_broadcast_init(void)

tests/bluetooth/tester/src/audio/btp_bap_broadcast.h

@@ -120,3 +120,5 @@ uint8_t btp_bap_broadcast_assistant_set_broadcast_code(const void *cmd, uint16_t
 						       void *rsp, uint16_t *rsp_len);
 uint8_t btp_bap_broadcast_assistant_send_past(const void *cmd, uint16_t cmd_len,
 					      void *rsp, uint16_t *rsp_len);
+uint8_t btp_bap_scan_delegator_add_src(const void *cmd, uint16_t cmd_len,
+				       void *rsp, uint16_t *rsp_len);