BES2500 a2dp相关api状态：
services\bt_if_enhanced\inc\a2dp_api.h
/** The transport layer is connected and commands/responses can now * be exchanged. */ #define BTIF_AVRCP_EVENT_CONNECT BTIF_AVCTP_CONNECT_EVENT /** The application will receive this event when a lower layer connection * (L2CAP) has been disconnected. Both the target and controller of the * connection are notified. * * During this callback, the 'p.remDev' parameter is valid. */ #define BTIF_AVRCP_EVENT_DISCONNECT BTIF_AVCTP_DISCONNECT_EVENT /** A remote device is attempting to connect the transport layer. * Only the acceptor of the connection is notified. */ #define BTIF_AVRCP_EVENT_CONNECT_IND BTIF_AVCTP_CONNECT_IND_EVENT /* Group: Events for the exchange of basic AV/C commands that are not routed * to the panel subunit. */ #define BTIF_AVRCP_EVENT_COMMAND BTIF_AVCTP_COMMAND_EVENT /** A AV/C response was received from the