123     UINT8 lbl;  member
405             btif_rc_cb.rc_vol_label=p_transaction->lbl;  in handle_rc_features()
1413                                    __FUNCTION__,p_transaction->lbl);  in set_volume()
1414                 BTA_AvMetaCmd(btif_rc_cb.rc_handle,p_transaction->lbl, AVRC_CMD_CTRL, p_msg);  in set_volume()
1449 static void register_volumechange (UINT8 lbl)  in register_volumechange()  argument
1458     BTIF_TRACE_DEBUG("%s called with label:%d",__FUNCTION__,lbl);  in register_volumechange()
1468          p_transaction=get_transaction_by_lbl(lbl);  in register_volumechange()
1471              BTA_AvMetaCmd(btif_rc_cb.rc_handle,p_transaction->lbl, AVRC_CMD_NOTIF, p_msg);  in register_volumechange()
1478             BTIF_TRACE_ERROR("%s transaction not obtained with label: %d",__FUNCTION__,lbl);  in register_volumechange()
1599             BTA_AvRemoteCmd(btif_rc_cb.rc_handle, p_transaction->lbl,  in send_passthrough_cmd()
1681 static void initialize_transaction(int lbl)  in initialize_transaction()  argument
1684     if(lbl < MAX_TRANSACTIONS_PER_SESSION)  in initialize_transaction()
1686        device.transaction[lbl].lbl = lbl;  in initialize_transaction()
1687        device.transaction[lbl].in_use=FALSE;  in initialize_transaction()
1688        device.transaction[lbl].handle=0;  in initialize_transaction()
1736 rc_transaction_t *get_transaction_by_lbl(UINT8 lbl)  in get_transaction_by_lbl()  argument
1742     if (lbl < MAX_TRANSACTIONS_PER_SESSION)  in get_transaction_by_lbl()
1744         if (FALSE==device.transaction[lbl].in_use)  in get_transaction_by_lbl()
1750             transaction = &(device.transaction[lbl]);  in get_transaction_by_lbl()
1751             BTIF_TRACE_DEBUG("%s: Got transaction.label: %d",__FUNCTION__,lbl);  in get_transaction_by_lbl()
1779             BTIF_TRACE_DEBUG("%s:Got transaction.label: %d",__FUNCTION__,device.transaction[i].lbl);  in get_transaction()
1800 void release_transaction(UINT8 lbl)  in release_transaction()  argument
1802     rc_transaction_t *transaction = get_transaction_by_lbl(lbl);  in release_transaction()
1807         BTIF_TRACE_DEBUG("%s: lbl: %d", __FUNCTION__, lbl);  in release_transaction()
1808         initialize_transaction(lbl);  in release_transaction()