/******************************************************************************
 *
 *  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 is the public interface file for the audio gateway (AG) subsystem
 *  of BTA, Broadcom's Bluetooth application layer for mobile phones.
 *
 ******************************************************************************/
#ifndef BTA_AG_API_H
#define BTA_AG_API_H

#include "bta_api.h"

/*****************************************************************************
**  Constants and data types
*****************************************************************************/

/* AG feature masks */
#define BTA_AG_FEAT_3WAY    0x00000001   /* Three-way calling */
#define BTA_AG_FEAT_ECNR    0x00000002   /* Echo cancellation and/or noise reduction */
#define BTA_AG_FEAT_VREC    0x00000004   /* Voice recognition */
#define BTA_AG_FEAT_INBAND  0x00000008   /* In-band ring tone */
#define BTA_AG_FEAT_VTAG    0x00000010   /* Attach a phone number to a voice tag */
#define BTA_AG_FEAT_REJECT  0x00000020   /* Ability to reject incoming call */
#define BTA_AG_FEAT_ECS     0x00000040   /* Enhanced Call Status */
#define BTA_AG_FEAT_ECC     0x00000080   /* Enhanced Call Control */
#define BTA_AG_FEAT_EXTERR  0x00000100   /* Extended error codes */
#define BTA_AG_FEAT_CODEC   0x00000200   /* Codec Negotiation */
#define BTA_AG_FEAT_VOIP    0x00000400   /* VoIP call */
/* Proprietary features: using 31 ~ 16 bits */
#define BTA_AG_FEAT_BTRH    0x00010000   /* CCAP incoming call hold */
#define BTA_AG_FEAT_UNAT    0x00020000   /* Pass unknown AT commands to application */
#define BTA_AG_FEAT_NOSCO   0x00040000   /* No SCO control performed by BTA AG */
#define BTA_AG_FEAT_NO_ESCO 0x00080000   /* Do not allow or use eSCO */

typedef UINT32 tBTA_AG_FEAT;

/* AG parse mode */
#define BTA_AG_PARSE            0 /* Perform AT command parsing in AG */
#define BTA_AG_PASS_THROUGH     1 /* Pass data directly to phone’s AT command interpreter */

typedef UINT8 tBTA_AG_PARSE_MODE;

/* AG open status */
#define BTA_AG_SUCCESS          0 /* Connection successfully opened */
#define BTA_AG_FAIL_SDP         1 /* Open failed due to SDP */
#define BTA_AG_FAIL_RFCOMM      2 /* Open failed due to RFCOMM */
#define BTA_AG_FAIL_RESOURCES   3 /* out of resources failure  */

typedef UINT8 tBTA_AG_STATUS;

/* handle values used with BTA_AgResult */
#define BTA_AG_HANDLE_NONE      0
#define BTA_AG_HANDLE_ALL       0xFFFF
/* It is safe to use the same value as BTA_AG_HANDLE_ALL
 * HANDLE_ALL is used for delivering indication
 * SCO_NO_CHANGE is used for changing sco behavior
 * They donot interfere with each other
 */
#define BTA_AG_HANDLE_SCO_NO_CHANGE 0xFFFF

/* AG result codes used with BTA_AgResult */
#define BTA_AG_SPK_RES              0   /* Update speaker volume */
#define BTA_AG_MIC_RES              1   /* Update microphone volume */
#define BTA_AG_INBAND_RING_RES      2   /* Update inband ring state */
#define BTA_AG_CIND_RES             3   /* Send indicator response for AT+CIND */
#define BTA_AG_BINP_RES             4   /* Send phone number for voice tag for AT+BINP */
#define BTA_AG_IND_RES              5   /* Update an indicator value */
#define BTA_AG_BVRA_RES             6   /* Update voice recognition state */
#define BTA_AG_CNUM_RES             7   /* Send subscriber number response for AT+CNUM */
#define BTA_AG_BTRH_RES             8   /* Send CCAP incoming call hold */
#define BTA_AG_CLCC_RES             9   /* Query list of calls */
#define BTA_AG_COPS_RES             10  /* Read network operator */
#define BTA_AG_IN_CALL_RES          11  /* Indicate incoming phone call */
#define BTA_AG_IN_CALL_CONN_RES     12  /* Incoming phone call connected */
#define BTA_AG_CALL_WAIT_RES        13  /* Call waiting notification */
#define BTA_AG_OUT_CALL_ORIG_RES    14  /* Outgoing phone call origination */
#define BTA_AG_OUT_CALL_ALERT_RES   15  /* Outgoing phone call alerting remote party */
#define BTA_AG_OUT_CALL_CONN_RES    16  /* Outgoing phone call connected */
#define BTA_AG_CALL_CANCEL_RES      17  /* Incoming/outgoing 3-way canceled before connected */
#define BTA_AG_END_CALL_RES         18  /* End call */
#define BTA_AG_IN_CALL_HELD_RES     19  /* Incoming call held */
#define BTA_AG_UNAT_RES             20  /* Response to unknown AT command event */

typedef UINT8 tBTA_AG_RES;

/* HFP peer features */
#define BTA_AG_PEER_FEAT_ECNR       0x0001  /* Echo cancellation and/or noise reduction */
#define BTA_AG_PEER_FEAT_3WAY       0x0002  /* Call waiting and three-way calling */
#define BTA_AG_PEER_FEAT_CLI        0x0004  /* Caller ID presentation capability */
#define BTA_AG_PEER_FEAT_VREC       0x0008  /* Voice recognition activation */
#define BTA_AG_PEER_FEAT_VOL        0x0010  /* Remote volume control */
#define BTA_AG_PEER_FEAT_ECS        0x0020  /* Enhanced Call Status */
#define BTA_AG_PEER_FEAT_ECC        0x0040  /* Enhanced Call Control */
#define BTA_AG_PEER_FEAT_CODEC      0x0080  /* Codec Negotiation */
#define BTA_AG_PEER_FEAT_VOIP       0x0100  /* VoIP call */

typedef UINT16 tBTA_AG_PEER_FEAT;

/* HFP peer supported codec masks */
#define BTA_AG_CODEC_NONE           BTM_SCO_CODEC_NONE
#define BTA_AG_CODEC_CVSD           BTM_SCO_CODEC_CVSD      /* CVSD */
#define BTA_AG_CODEC_MSBC           BTM_SCO_CODEC_MSBC      /* mSBC */
typedef UINT16 tBTA_AG_PEER_CODEC;

/* HFP errcode - Set when BTA_AG_OK_ERROR is returned in 'ok_flag' */
#define BTA_AG_ERR_PHONE_FAILURE    0       /* Phone Failure */
#define BTA_AG_ERR_NO_CONN_PHONE    1       /* No connection to phone */
#define BTA_AG_ERR_OP_NOT_ALLOWED   3       /* Operation not allowed */
#define BTA_AG_ERR_OP_NOT_SUPPORTED 4       /* Operation not supported */
#define BTA_AG_ERR_PHSIM_PIN_REQ    5       /* PH-SIM PIN required */
#define BTA_AG_ERR_SIM_NOT_INSERTED 10      /* SIM not inserted */
#define BTA_AG_ERR_SIM_PIN_REQ      11      /* SIM PIN required */
#define BTA_AG_ERR_SIM_PUK_REQ      12      /* SIM PUK required */
#define BTA_AG_ERR_SIM_FAILURE      13      /* SIM failure */
#define BTA_AG_ERR_SIM_BUSY         14      /* SIM busy */
#define BTA_AG_ERR_INCORRECT_PWD    16      /* Incorrect password */
#define BTA_AG_ERR_SIM_PIN2_REQ     17      /* SIM PIN2 required */
#define BTA_AG_ERR_SIM_PUK2_REQ     18      /* SIM PUK2 required */
#define BTA_AG_ERR_MEMORY_FULL      20      /* Memory full */
#define BTA_AG_ERR_INVALID_INDEX    21      /* Invalid index */
#define BTA_AG_ERR_MEMORY_FAILURE   23      /* Memory failure */
#define BTA_AG_ERR_TEXT_TOO_LONG    24      /* Text string too long */
#define BTA_AG_ERR_INV_CHAR_IN_TSTR 25      /* Invalid characters in text string */
#define BTA_AG_ERR_DSTR_TOO_LONG    26      /* Dial string too long */
#define BTA_AG_ERR_INV_CHAR_IN_DSTR 27      /* Invalid characters in dial string */
#define BTA_AG_ERR_NO_NETWORK_SERV  30      /* No network service */
#define BTA_AG_ERR_NETWORK_TIME_OUT 31      /* Network timeout */
#define BTA_AG_ERR_NO_NET_EMG_ONLY  32      /* Network not allowed - emergency service only */
#define BTA_AG_ERR_VOIP_CS_CALLS    33      /* AG cannot create simultaneous VoIP and CS calls */
#define BTA_AG_ERR_NOT_FOR_VOIP     34      /* Not supported on this call type(VoIP) */
#define BTA_AG_ERR_SIP_RESP_CODE    35      /* SIP 3 digit response code */

#if 0   /* Not Used in Bluetooth HFP 1.5 Specification */
#define BTA_AG_ERR_PHADAP_LNK_RES   2       /* Phone-adapter link reserved */
#define BTA_AG_ERR_PHFSIM_PIN_REQ   6       /* PH-FSIM PIN required */
#define BTA_AG_ERR_PHFSIM_PUK_REQ   7       /* PH-FSIM PUK required */
#define BTA_AG_ERR_SIM_WRONG        15      /* SIM wrong */
#define BTA_AG_ERR_NOT_FOUND        22      /* Not found */
#define BTA_AG_ERR_NETWORK_TIMEOUT  31      /* Network timeout */
#define BTA_AG_ERR_NET_PIN_REQ      40      /* Network personalization PIN required */
#define BTA_AG_ERR_NET_PUK_REQ      41      /* Network personalization PUK required */
#define BTA_AG_ERR_SUBSET_PIN_REQ   42      /* Network subset personalization PIN required */
#define BTA_AG_ERR_SUBSET_PUK_REQ   43      /* Network subset personalization PUK required */
#define BTA_AG_ERR_SERVPRO_PIN_REQ  44      /* Service provider personalization PIN required */
#define BTA_AG_ERR_SERVPRO_PUK_REQ  45      /* Service provider personalization PUK required */
#define BTA_AG_ERR_CORP_PIN_REQ     46      /* Corporate personalization PIN required */
#define BTA_AG_ERR_CORP_PUK_REQ     47      /* Corporate personalization PUK required */
#define BTA_AG_ERR_UNKNOWN          100    /* Unknown error */
/* GPRS-related errors */
#define BTA_AG_ERR_ILL_MS           103    /* Illegal MS (#3) */
#define BTA_AG_ERR_ILL_ME           106    /* Illegal ME (#6) */
#define BTA_AG_ERR_GPRS_NOT_ALLOWED 107    /* GPRS services not allowed (#7) */
#define BTA_AG_ERR_PLMN_NOT_ALLOWED 111    /* PLMN services not allowed (#11) */
#define BTA_AG_ERR_LOC_NOT_ALLOWED  112    /* Location area not allowed (#12) */
#define BTA_AG_ERR_ROAM_NOT_ALLOWED 113    /* Roaming not allowed in this location area (#13) */
/* Errors related to a failure to Activate a Context */
#define BTA_AG_ERR_OPT_NOT_SUPP     132    /* Service option not supported (#32) */
#define BTA_AG_ERR_OPT_NOT_SUBSCR   133    /* Requested service option not subscribed (#33) */
#define BTA_AG_ERR_OPT_OUT_OF_ORDER 134    /* Service option temporarily out of order (#34) */
#define BTA_AG_ERR_PDP_AUTH_FAILURE 149    /* PDP authentication failure */
/* Other GPRS errors */
#define BTA_AG_ERR_INV_MOBILE_CLASS 150    /* Invalid mobile class */
#define BTA_AG_ERR_UNSPEC_GPRS_ERR  148    /* Unspecified GPRS error */
#endif  /* Unused error codes */


/* HFP result data 'ok_flag' */
#define BTA_AG_OK_CONTINUE          0       /* Send out response (more responses coming) */
#define BTA_AG_OK_DONE              1       /* Send out response followed by OK (finished) */
#define BTA_AG_OK_ERROR             2       /* Error response */

/* BTRH values */
#define BTA_AG_BTRH_SET_HOLD        0       /* Put incoming call on hold */
#define BTA_AG_BTRH_SET_ACC         1       /* Accept incoming call on hold */
#define BTA_AG_BTRH_SET_REJ         2       /* Reject incoming call on hold */
#define BTA_AG_BTRH_READ            3       /* Read the current value */
#define BTA_AG_BTRH_NO_RESP         4       /* Not in RH States (reply to read) */

/* ASCII character string of arguments to the AT command or result */
#ifndef BTA_AG_AT_MAX_LEN
#define BTA_AG_AT_MAX_LEN           256
#endif

/* data associated with BTA_AG_IND_RES */
typedef struct
{
    UINT16          id;
    UINT16          value;
} tBTA_AG_IND;

/* data type for BTA_AgResult() */
typedef struct
{
    char            str[BTA_AG_AT_MAX_LEN+1];
    tBTA_AG_IND     ind;
    UINT16          num;
    UINT16          audio_handle;
    UINT16          errcode;        /* Valid only if 'ok_flag' is set to BTA_AG_OK_ERROR */
    UINT8           ok_flag;        /* Indicates if response is finished, and if error occurred */
    BOOLEAN         state;
} tBTA_AG_RES_DATA;

/* AG callback events */
#define BTA_AG_ENABLE_EVT       0  /* AG enabled */
#define BTA_AG_REGISTER_EVT     1  /* AG registered */
#define BTA_AG_OPEN_EVT         2  /* AG connection open */
#define BTA_AG_CLOSE_EVT        3  /* AG connection closed */
#define BTA_AG_CONN_EVT         4  /* Service level connection opened */
#define BTA_AG_AUDIO_OPEN_EVT   5  /* Audio connection open */
#define BTA_AG_AUDIO_CLOSE_EVT  6  /* Audio connection closed */
#define BTA_AG_SPK_EVT          7  /* Speaker volume changed */
#define BTA_AG_MIC_EVT          8  /* Microphone volume changed */
#define BTA_AG_AT_CKPD_EVT      9  /* CKPD from the HS */
#define BTA_AG_DISABLE_EVT      30 /* AG disabled       */

/* Values below are for HFP only */
#define BTA_AG_AT_A_EVT         10 /* Answer a call */
#define BTA_AG_AT_D_EVT         11 /* Place a call using number or memory dial */
#define BTA_AG_AT_CHLD_EVT      12 /* Call hold */
#define BTA_AG_AT_CHUP_EVT      13 /* Hang up a call */
#define BTA_AG_AT_CIND_EVT      14 /* Read indicator settings */
#define BTA_AG_AT_VTS_EVT       15 /* Transmit DTMF tone */
#define BTA_AG_AT_BINP_EVT      16 /* Retrieve number from voice tag */
#define BTA_AG_AT_BLDN_EVT      17 /* Place call to last dialed number */
#define BTA_AG_AT_BVRA_EVT      18 /* Enable/disable voice recognition */
#define BTA_AG_AT_NREC_EVT      19 /* Disable echo canceling */
#define BTA_AG_AT_CNUM_EVT      20 /* Retrieve subscriber number */
#define BTA_AG_AT_BTRH_EVT      21 /* CCAP-style incoming call hold */
#define BTA_AG_AT_CLCC_EVT      22 /* Query list of current calls */
#define BTA_AG_AT_COPS_EVT      23 /* Query list of current calls */
#define BTA_AG_AT_UNAT_EVT      24 /* Unknown AT command */
#define BTA_AG_AT_CBC_EVT       25 /* Battery Level report from HF */
#define BTA_AG_AT_BAC_EVT       26 /* Codec select */
#define BTA_AG_AT_BCS_EVT       27 /* Codec select */

typedef UINT8 tBTA_AG_EVT;

/* data associated with most non-AT events */
typedef struct
{
    UINT16              handle;
    UINT8               app_id;
} tBTA_AG_HDR;

/* data associated with BTA_AG_REGISTER_EVT */
typedef struct
{
    tBTA_AG_HDR         hdr;
    tBTA_AG_STATUS      status;
} tBTA_AG_REGISTER;

/* data associated with BTA_AG_OPEN_EVT */
typedef struct
{
    tBTA_AG_HDR         hdr;
    BD_ADDR             bd_addr;
    tBTA_SERVICE_ID     service_id;
    tBTA_AG_STATUS      status;
} tBTA_AG_OPEN;

/* data associated with BTA_AG_CONN_EVT */
typedef struct
{
    tBTA_AG_HDR         hdr;
    tBTA_AG_PEER_FEAT   peer_feat;
    tBTA_AG_PEER_CODEC  peer_codec;
} tBTA_AG_CONN;

/* data associated with AT command event */
typedef struct
{
    tBTA_AG_HDR         hdr;
    char                str[BTA_AG_AT_MAX_LEN+1];
    UINT16              num;
    UINT8               idx;    /* call number used by CLCC and CHLD */
} tBTA_AG_VAL;

/* union of data associated with AG callback */
typedef union
{
    tBTA_AG_HDR         hdr;
    tBTA_AG_REGISTER    reg;
    tBTA_AG_OPEN        open;
    tBTA_AG_CONN        conn;
    tBTA_AG_VAL         val;
} tBTA_AG;

/* AG callback */
typedef void (tBTA_AG_CBACK)(tBTA_AG_EVT event, tBTA_AG *p_data);

/* indicator constants HFP 1.1 and later */
#define BTA_AG_IND_CALL             1   /* position of call indicator */
#define BTA_AG_IND_CALLSETUP        2   /* position of callsetup indicator */
#define BTA_AG_IND_SERVICE          3   /* position of service indicator */

/* indicator constants HFP 1.5 and later */
#define BTA_AG_IND_SIGNAL           4   /* position of signal strength indicator */
#define BTA_AG_IND_ROAM             5   /* position of roaming indicator */
#define BTA_AG_IND_BATTCHG          6   /* position of battery charge indicator */
#define BTA_AG_IND_CALLHELD         7   /* position of callheld indicator */
#define BTA_AG_IND_BEARER           8   /* position of bearer indicator */

/* call indicator values */
#define BTA_AG_CALL_INACTIVE        0   /* Phone call inactive */
#define BTA_AG_CALL_ACTIVE          1   /* Phone call active */

/* callsetup indicator values */
#define BTA_AG_CALLSETUP_NONE       0   /* Not currently in call set up */
#define BTA_AG_CALLSETUP_INCOMING   1   /* Incoming call process ongoing */
#define BTA_AG_CALLSETUP_OUTGOING   2   /* Outgoing call set up is ongoing */
#define BTA_AG_CALLSETUP_ALERTING   3   /* Remote party being alerted in an outgoing call */

/* service indicator values */
#define BTA_AG_SERVICE_NONE         0   /* Neither CS nor VoIP service is available     */
#define BTA_AG_SERVICE_CS           1   /* Only CS service is available                 */
#define BTA_AG_SERVICE_VOIP         2   /* Only VoIP service is available               */
#define BTA_AG_SERVICE_CS_VOIP      3   /* Both CS and VoIP services available          */

/* callheld indicator values */
#define BTA_AG_CALLHELD_INACTIVE    0   /* No held calls */
#define BTA_AG_CALLHELD_ACTIVE      1   /* Call held and call active */
#define BTA_AG_CALLHELD_NOACTIVE    2   /* Call held and no call active */

/* signal strength indicator values */
#define BTA_AG_ROAMING_INACTIVE     0   /* Phone call inactive */
#define BTA_AG_ROAMING_ACTIVE       1   /* Phone call active */

/* bearer indicator values */
#define BTA_AG_BEARER_WLAN          0   /* WLAN         */
#define BTA_AG_BEARER_BLUETOOTH     1   /* Bluetooth    */
#define BTA_AG_BEARER_WIRED         2   /* Wired        */
#define BTA_AG_BEARER_2G3G          3   /* 2G 3G        */
#define BTA_AG_BEARER_WIMAX         4   /* WIMAX        */
#define BTA_AG_BEARER_RES1          5   /* Reserved     */
#define BTA_AG_BEARER_RES2          6   /* Reserved     */
#define BTA_AG_BEARER_RES3          7   /* Reserved     */

/* AG configuration structure */
typedef struct
{
    char         *cind_info;
    INT32        conn_tout;
    UINT16       sco_pkt_types;
    char         *chld_val_ecc;
    char         *chld_val;
} tBTA_AG_CFG;

#ifdef __cplusplus
extern "C"
{
#endif

/*****************************************************************************
**  External Function Declarations
*****************************************************************************/

/*******************************************************************************
**
** Function         BTA_AgEnable
**
** Description      Enable the audio gateway service. When the enable
**                  operation is complete the callback function will be
**                  called with a BTA_AG_ENABLE_EVT. This function must
**                  be called before other function in the AG API are
**                  called.
**
** Returns          BTA_SUCCESS if OK, BTA_FAILURE otherwise.
**
*******************************************************************************/
BTA_API tBTA_STATUS BTA_AgEnable(tBTA_AG_PARSE_MODE parse_mode, tBTA_AG_CBACK *p_cback);

/*******************************************************************************
**
** Function         BTA_AgDisable
**
** Description      Disable the audio gateway service
**
**
** Returns          void
**
*******************************************************************************/
BTA_API void BTA_AgDisable(void);

/*******************************************************************************
**
** Function         BTA_AgRegister
**
** Description      Register an Audio Gateway service.
**
**
** Returns          void
**
*******************************************************************************/
BTA_API void BTA_AgRegister(tBTA_SERVICE_MASK services, tBTA_SEC sec_mask,
                tBTA_AG_FEAT features, char *p_service_names[], UINT8 app_id);

/*******************************************************************************
**
** Function         BTA_AgDeregister
**
** Description      Deregister an audio gateway service.
**
**
** Returns          void
**
*******************************************************************************/
BTA_API void BTA_AgDeregister(UINT16 handle);

/*******************************************************************************
**
** Function         BTA_AgOpen
**
** Description      Opens a connection to a headset or hands-free device.
**                  When connection is open callback function is called
**                  with a BTA_AG_OPEN_EVT. Only the data connection is
**                  opened. The audio connection is not opened.
**
**
** Returns          void
**
*******************************************************************************/
BTA_API void BTA_AgOpen(UINT16 handle, BD_ADDR bd_addr, tBTA_SEC sec_mask, tBTA_SERVICE_MASK services);

/*******************************************************************************
**
** Function         BTA_AgClose
**
** Description      Close the current connection to a headset or a handsfree
**                  Any current audio connection will also be closed
**
**
** Returns          void
**
*******************************************************************************/
BTA_API void BTA_AgClose(UINT16 handle);

/*******************************************************************************
**
** Function         BTA_AgAudioOpen
**
** Description      Opens an audio connection to the currently connected
**                  headset or hnadsfree
**
**
** Returns          void
**
*******************************************************************************/
BTA_API void BTA_AgAudioOpen(UINT16 handle);

/*******************************************************************************
**
** Function         BTA_AgAudioClose
**
** Description      Close the currently active audio connection to a headset
**                  or hnadsfree. The data connection remains open
**
**
** Returns          void
**
*******************************************************************************/
BTA_API void BTA_AgAudioClose(UINT16 handle);

/*******************************************************************************
**
** Function         BTA_AgResult
**
** Description      Send an AT result code to a headset or hands-free device.
**                  This function is only used when the AG parse mode is set
**                  to BTA_AG_PARSE.
**
**
** Returns          void
**
*******************************************************************************/
BTA_API void BTA_AgResult(UINT16 handle, tBTA_AG_RES result, tBTA_AG_RES_DATA *p_data);

/*******************************************************************************
**
** Function         BTA_AgSetCodec
**
** Description      Specify the codec type to be used for the subsequent
**                  audio connection.
**
**
**
** Returns          void
**
*******************************************************************************/
BTA_API void BTA_AgSetCodec(UINT16 handle, tBTA_AG_PEER_CODEC codec);

#ifdef __cplusplus
}
#endif

#endif /* BTA_AG_API_H */


