kopia lustrzana https://github.com/espressif/esp-idf
280 wiersze
12 KiB
C
280 wiersze
12 KiB
C
/******************************************************************************
|
|
*
|
|
* Copyright (C) 2003-2012 Broadcom Corporation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at:
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
******************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* This interface file contains the interface to the Audio Video Control
|
|
* Transport Protocol (AVCTP).
|
|
*
|
|
******************************************************************************/
|
|
#ifndef AVCT_API_H
|
|
#define AVCT_API_H
|
|
|
|
#include "bt_types.h"
|
|
#include "bt_target.h"
|
|
|
|
/*****************************************************************************
|
|
** Constants
|
|
*****************************************************************************/
|
|
|
|
/* API function return value result codes. */
|
|
#define AVCT_SUCCESS 0 /* Function successful */
|
|
#define AVCT_NO_RESOURCES 1 /* Not enough resources */
|
|
#define AVCT_BAD_HANDLE 2 /* Bad handle */
|
|
#define AVCT_PID_IN_USE 3 /* PID already in use */
|
|
#define AVCT_NOT_OPEN 4 /* Connection not open */
|
|
|
|
/* PSM for AVCT. */
|
|
#define AVCT_PSM 0x0017
|
|
#define AVCT_BR_PSM 0x001B
|
|
|
|
/* Protocol revision numbers */
|
|
#define AVCT_REV_1_0 0x0100
|
|
#define AVCT_REV_1_2 0x0102
|
|
#define AVCT_REV_1_3 0x0103
|
|
#define AVCT_REV_1_4 0x0104
|
|
|
|
/* the layer_specific settings */
|
|
#define AVCT_DATA_CTRL 0x0001 /* for the control channel */
|
|
#define AVCT_DATA_BROWSE 0x0002 /* for the browsing channel */
|
|
#define AVCT_DATA_PARTIAL 0x0100 /* Only have room for a partial message */
|
|
|
|
#define AVCT_MIN_CONTROL_MTU 48 /* Per the AVRC spec, minimum MTU for the control channel */
|
|
#define AVCT_MIN_BROWSE_MTU 335 /* Per the AVRC spec, minimum MTU for the browsing channel */
|
|
|
|
/* Message offset. The number of bytes needed by the protocol stack for the
|
|
** protocol headers of an AVCTP message packet.
|
|
*/
|
|
#define AVCT_MSG_OFFSET 15
|
|
#define AVCT_BROWSE_OFFSET 17 /* the default offset for browsing channel */
|
|
|
|
/* Connection role. */
|
|
#define AVCT_INT 0 /* Initiator connection */
|
|
#define AVCT_ACP 1 /* Acceptor connection */
|
|
|
|
/* Control role. */
|
|
#define AVCT_TARGET 1 /* target */
|
|
#define AVCT_CONTROL 2 /* controller */
|
|
#define AVCT_PASSIVE 4 /* If conflict, allow the other side to succeed */
|
|
|
|
/* Command/Response indicator. */
|
|
#define AVCT_CMD 0 /* Command message */
|
|
#define AVCT_RSP 2 /* Response message */
|
|
#define AVCT_REJ 3 /* Message rejected */
|
|
|
|
/* Control callback events. */
|
|
#define AVCT_CONNECT_CFM_EVT 0 /* Connection confirm */
|
|
#define AVCT_CONNECT_IND_EVT 1 /* Connection indication */
|
|
#define AVCT_DISCONNECT_CFM_EVT 2 /* Disconnect confirm */
|
|
#define AVCT_DISCONNECT_IND_EVT 3 /* Disconnect indication */
|
|
#define AVCT_CONG_IND_EVT 4 /* Congestion indication */
|
|
#define AVCT_UNCONG_IND_EVT 5 /* Uncongestion indication */
|
|
#define AVCT_BROWSE_CONN_CFM_EVT 6 /* Browse Connection confirm */
|
|
#define AVCT_BROWSE_CONN_IND_EVT 7 /* Browse Connection indication */
|
|
#define AVCT_BROWSE_DISCONN_CFM_EVT 8 /* Browse Disconnect confirm */
|
|
#define AVCT_BROWSE_DISCONN_IND_EVT 9 /* Browse Disconnect indication */
|
|
#define AVCT_BROWSE_CONG_IND_EVT 10 /* Congestion indication */
|
|
#define AVCT_BROWSE_UNCONG_IND_EVT 11 /* Uncongestion indication */
|
|
|
|
|
|
/* General purpose failure result code for callback events. */
|
|
#define AVCT_RESULT_FAIL 5
|
|
|
|
/*****************************************************************************
|
|
** Type Definitions
|
|
*****************************************************************************/
|
|
|
|
/* Control callback function. */
|
|
typedef void (tAVCT_CTRL_CBACK)(UINT8 handle, UINT8 event, UINT16 result,
|
|
BD_ADDR peer_addr);
|
|
|
|
/* Message callback function */
|
|
/* p_pkt->layer_specific is AVCT_DATA_CTRL or AVCT_DATA_BROWSE */
|
|
typedef void (tAVCT_MSG_CBACK)(UINT8 handle, UINT8 label, UINT8 cr,
|
|
BT_HDR *p_pkt);
|
|
|
|
/* Structure used by AVCT_CreateConn. */
|
|
typedef struct {
|
|
tAVCT_CTRL_CBACK *p_ctrl_cback; /* Control callback */
|
|
tAVCT_MSG_CBACK *p_msg_cback; /* Message callback */
|
|
UINT16 pid; /* Profile ID */
|
|
UINT8 role; /* Initiator/acceptor role */
|
|
UINT8 control; /* Control role (Control/Target) */
|
|
} tAVCT_CC;
|
|
|
|
/*****************************************************************************
|
|
** External Function Declarations
|
|
*****************************************************************************/
|
|
#ifdef __cplusplus
|
|
extern "C"
|
|
{
|
|
#endif
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function AVCT_Register
|
|
**
|
|
** Description This is the system level registration function for the
|
|
** AVCTP protocol. This function initializes AVCTP and
|
|
** prepares the protocol stack for its use. This function
|
|
** must be called once by the system or platform using AVCTP
|
|
** before the other functions of the API an be used.
|
|
**
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
extern void AVCT_Register(UINT16 mtu, UINT16 mtu_br, UINT8 sec_mask);
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function AVCT_Deregister
|
|
**
|
|
** Description This function is called to deregister use AVCTP protocol.
|
|
** It is called when AVCTP is no longer being used by any
|
|
** application in the system. Before this function can be
|
|
** called, all connections must be removed with
|
|
** AVCT_RemoveConn().
|
|
**
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
extern void AVCT_Deregister(void);
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function AVCT_CreateConn
|
|
**
|
|
** Description Create an AVCTP connection. There are two types of
|
|
** connections, initiator and acceptor, as determined by
|
|
** the p_cc->role parameter. When this function is called to
|
|
** create an initiator connection, an AVCTP connection to
|
|
** the peer device is initiated if one does not already exist.
|
|
** If an acceptor connection is created, the connection waits
|
|
** passively for an incoming AVCTP connection from a peer device.
|
|
**
|
|
**
|
|
** Returns AVCT_SUCCESS if successful, otherwise error.
|
|
**
|
|
*******************************************************************************/
|
|
extern UINT16 AVCT_CreateConn(UINT8 *p_handle, tAVCT_CC *p_cc,
|
|
BD_ADDR peer_addr);
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function AVCT_RemoveConn
|
|
**
|
|
** Description Remove an AVCTP connection. This function is called when
|
|
** the application is no longer using a connection. If this
|
|
** is the last connection to a peer the L2CAP channel for AVCTP
|
|
** will be closed.
|
|
**
|
|
**
|
|
** Returns AVCT_SUCCESS if successful, otherwise error.
|
|
**
|
|
*******************************************************************************/
|
|
extern UINT16 AVCT_RemoveConn(UINT8 handle);
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function AVCT_CreateBrowse
|
|
**
|
|
** Description Create an AVCTP connection. There are two types of
|
|
** connections, initiator and acceptor, as determined by
|
|
** the p_cc->role parameter. When this function is called to
|
|
** create an initiator connection, an AVCTP connection to
|
|
** the peer device is initiated if one does not already exist.
|
|
** If an acceptor connection is created, the connection waits
|
|
** passively for an incoming AVCTP connection from a peer device.
|
|
**
|
|
**
|
|
** Returns AVCT_SUCCESS if successful, otherwise error.
|
|
**
|
|
*******************************************************************************/
|
|
extern UINT16 AVCT_CreateBrowse(UINT8 handle, UINT8 role);
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function AVCT_RemoveBrowse
|
|
**
|
|
** Description Remove an AVCTP connection. This function is called when
|
|
** the application is no longer using a connection. If this
|
|
** is the last connection to a peer the L2CAP channel for AVCTP
|
|
** will be closed.
|
|
**
|
|
**
|
|
** Returns AVCT_SUCCESS if successful, otherwise error.
|
|
**
|
|
*******************************************************************************/
|
|
extern UINT16 AVCT_RemoveBrowse(UINT8 handle);
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function AVCT_GetBrowseMtu
|
|
**
|
|
** Description Get the peer_mtu for the AVCTP Browse channel of the given
|
|
** connection.
|
|
**
|
|
** Returns the peer browsing channel MTU.
|
|
**
|
|
*******************************************************************************/
|
|
extern UINT16 AVCT_GetBrowseMtu (UINT8 handle);
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function AVCT_GetPeerMtu
|
|
**
|
|
** Description Get the peer_mtu for the AVCTP channel of the given
|
|
** connection.
|
|
**
|
|
** Returns the peer MTU size.
|
|
**
|
|
*******************************************************************************/
|
|
extern UINT16 AVCT_GetPeerMtu (UINT8 handle);
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function AVCT_MsgReq
|
|
**
|
|
** Description Send an AVCTP message to a peer device. In calling
|
|
** AVCT_MsgReq(), the application should keep track of the
|
|
** congestion state of AVCTP as communicated with events
|
|
** AVCT_CONG_IND_EVT and AVCT_UNCONG_IND_EVT. If the
|
|
** application calls AVCT_MsgReq() when AVCTP is congested
|
|
** the message may be discarded. The application may make its
|
|
** first call to AVCT_MsgReq() after it receives an
|
|
** AVCT_CONNECT_CFM_EVT or AVCT_CONNECT_IND_EVT on control channel or
|
|
** AVCT_BROWSE_CONN_CFM_EVT or AVCT_BROWSE_CONN_IND_EVT on browsing channel.
|
|
**
|
|
** p_msg->layer_specific must be set to
|
|
** AVCT_DATA_CTRL for control channel traffic;
|
|
** AVCT_DATA_BROWSE for for browse channel traffic.
|
|
**
|
|
** Returns AVCT_SUCCESS if successful, otherwise error.
|
|
**
|
|
*******************************************************************************/
|
|
extern UINT16 AVCT_MsgReq(UINT8 handle, UINT8 label, UINT8 cr, BT_HDR *p_msg);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
|
|
#endif /* AVCT_API_H */
|