1 /******************************************************************************
2  *
3  *  Copyright (C) 2003-2012 Broadcom Corporation
4  *
5  *  Licensed under the Apache License, Version 2.0 (the "License");
6  *  you may not use this file except in compliance with the License.
7  *  You may obtain a copy of the License at:
8  *
9  *  http://www.apache.org/licenses/LICENSE-2.0
10  *
11  *  Unless required by applicable law or agreed to in writing, software
12  *  distributed under the License is distributed on an "AS IS" BASIS,
13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  *  See the License for the specific language governing permissions and
15  *  limitations under the License.
16  *
17  ******************************************************************************/
18 
19 /******************************************************************************
20  *
21  *  This is the public interface file for the audio gateway (AG) subsystem
22  *  of BTA, Broadcom's Bluetooth application layer for mobile phones.
23  *
24  ******************************************************************************/
25 #ifndef BTA_AG_API_H
26 #define BTA_AG_API_H
27 
28 #include "bta_api.h"
29 
30 /*****************************************************************************
31  *  Constants and data types
32  ****************************************************************************/
33 #define HFP_VERSION_1_1 0x0101
34 #define HFP_VERSION_1_5 0x0105
35 #define HFP_VERSION_1_6 0x0106
36 #define HFP_VERSION_1_7 0x0107
37 
38 #define HSP_VERSION_1_0 0x0100
39 #define HSP_VERSION_1_2 0x0102
40 
41 /* Note, if you change the default version here, please also change the one in
42  * bta_hs_api.h, they are meant to be the same.
43  */
44 #ifndef BTA_HFP_VERSION
45 #define BTA_HFP_VERSION HFP_VERSION_1_7
46 #endif
47 
48 /* AG feature masks */
49 #define BTA_AG_FEAT_3WAY 0x00000001   /* Three-way calling */
50 #define BTA_AG_FEAT_ECNR 0x00000002   /* Echo cancellation/noise reduction */
51 #define BTA_AG_FEAT_VREC 0x00000004   /* Voice recognition */
52 #define BTA_AG_FEAT_INBAND 0x00000008 /* In-band ring tone */
53 #define BTA_AG_FEAT_VTAG 0x00000010   /* Attach a phone number to a voice tag */
54 #define BTA_AG_FEAT_REJECT 0x00000020 /* Ability to reject incoming call */
55 #define BTA_AG_FEAT_ECS 0x00000040    /* Enhanced Call Status */
56 #define BTA_AG_FEAT_ECC 0x00000080    /* Enhanced Call Control */
57 #define BTA_AG_FEAT_EXTERR 0x00000100 /* Extended error codes */
58 #define BTA_AG_FEAT_CODEC 0x00000200  /* Codec Negotiation */
59 
60 /* Valid feature bit mask for HFP 1.6 (and below) */
61 #define HFP_1_6_FEAT_MASK 0x000003FF
62 
63 /* HFP 1.7+ */
64 #define BTA_AG_FEAT_HF_IND 0x00000400 /* HF Indicators */
65 #define BTA_AG_FEAT_ESCO 0x00000800   /* eSCO S4 (and T2) setting supported */
66 
67 /* Proprietary features: using 31 ~ 16 bits */
68 #define BTA_AG_FEAT_BTRH 0x00010000    /* CCAP incoming call hold */
69 #define BTA_AG_FEAT_UNAT 0x00020000    /* Pass unknown AT commands to app */
70 #define BTA_AG_FEAT_NOSCO 0x00040000   /* No SCO control performed by BTA AG */
71 #define BTA_AG_FEAT_NO_ESCO 0x00080000 /* Do not allow or use eSCO */
72 #define BTA_AG_FEAT_VOIP 0x00100000    /* VoIP call */
73 
74 typedef uint32_t tBTA_AG_FEAT;
75 
76 /* AG parse mode */
77 #define BTA_AG_PARSE 0 /* Perform AT command parsing in AG */
78 
79 /* Pass data directly to phone's AT command interpreter */
80 #define BTA_AG_PASS_THROUGH 1
81 
82 typedef uint8_t tBTA_AG_PARSE_MODE;
83 
84 /* AG open status */
85 #define BTA_AG_SUCCESS 0        /* Connection successfully opened */
86 #define BTA_AG_FAIL_SDP 1       /* Open failed due to SDP */
87 #define BTA_AG_FAIL_RFCOMM 2    /* Open failed due to RFCOMM */
88 #define BTA_AG_FAIL_RESOURCES 3 /* out of resources failure */
89 
90 /* Status to disallow passing AT Events after BTIF */
91 #define BTA_AG_DISALLOW_AT 5
92 
93 typedef uint8_t tBTA_AG_STATUS;
94 
95 /* handle values used with BTA_AgResult */
96 #define BTA_AG_HANDLE_NONE 0
97 #define BTA_AG_HANDLE_ALL 0xFFFF
98 /* It is safe to use the same value as BTA_AG_HANDLE_ALL
99  * HANDLE_ALL is used for delivering indication
100  * SCO_NO_CHANGE is used for changing sco behavior
101  * They donot interfere with each other
102  */
103 
104 /* Number of supported HF indicators, there is one HF indicator so far i.e.
105                                                    enhanced driver status. */
106 /* Number of supported HF indicators,
107    1 for Enhanced Safety Status
108    2 for Battery Level Status */
109 #ifndef BTA_AG_NUM_LOCAL_HF_IND
110 #define BTA_AG_NUM_LOCAL_HF_IND 2
111 #endif
112 
113 #define BTA_AG_HANDLE_SCO_NO_CHANGE 0xFFFF
114 
115 /* AG result codes used with BTA_AgResult */
116 #define BTA_AG_SPK_RES 0         /* Update speaker volume */
117 #define BTA_AG_MIC_RES 1         /* Update microphone volume */
118 #define BTA_AG_INBAND_RING_RES 2 /* Update inband ring state */
119 #define BTA_AG_CIND_RES 3        /* Send indicator response for AT+CIND */
120 #define BTA_AG_BINP_RES 4     /* Send phone number for voice tag for AT+BINP */
121 #define BTA_AG_IND_RES 5      /* Update an indicator value */
122 #define BTA_AG_BVRA_RES 6     /* Update voice recognition state */
123 #define BTA_AG_CNUM_RES 7     /* Send subscriber number response for AT+CNUM */
124 #define BTA_AG_BTRH_RES 8     /* Send CCAP incoming call hold */
125 #define BTA_AG_CLCC_RES 9     /* Query list of calls */
126 #define BTA_AG_COPS_RES 10    /* Read network operator */
127 #define BTA_AG_IN_CALL_RES 11 /* Indicate incoming phone call */
128 #define BTA_AG_IN_CALL_CONN_RES 12  /* Incoming phone call connected */
129 #define BTA_AG_CALL_WAIT_RES 13     /* Call waiting notification */
130 #define BTA_AG_OUT_CALL_ORIG_RES 14 /* Outgoing phone call origination */
131 
132 /* Outgoing phone call alerting remote party */
133 #define BTA_AG_OUT_CALL_ALERT_RES 15
134 #define BTA_AG_OUT_CALL_CONN_RES 16 /* Outgoing phone call connected */
135 
136 /* Incoming/outgoing 3-way canceled before connected */
137 #define BTA_AG_CALL_CANCEL_RES 17
138 #define BTA_AG_END_CALL_RES 18     /* End call */
139 #define BTA_AG_IN_CALL_HELD_RES 19 /* Incoming call held */
140 #define BTA_AG_UNAT_RES 20         /* Response to unknown AT command event */
141 #define BTA_AG_MULTI_CALL_RES 21   /* SLC at three way call */
142 #define BTA_AG_BIND_RES 22         /* Activate/Deactivate HF indicator */
143 
144 typedef uint8_t tBTA_AG_RES;
145 
146 /* HFP peer features */
147 #define BTA_AG_PEER_FEAT_ECNR 0x0001   /* Echo cancellation/noise reduction */
148 #define BTA_AG_PEER_FEAT_3WAY 0x0002   /* Call waiting and three-way calling */
149 #define BTA_AG_PEER_FEAT_CLI 0x0004    /* Caller ID presentation capability */
150 #define BTA_AG_PEER_FEAT_VREC 0x0008   /* Voice recognition activation */
151 #define BTA_AG_PEER_FEAT_VOL 0x0010    /* Remote volume control */
152 #define BTA_AG_PEER_FEAT_ECS 0x0020    /* Enhanced Call Status */
153 #define BTA_AG_PEER_FEAT_ECC 0x0040    /* Enhanced Call Control */
154 #define BTA_AG_PEER_FEAT_CODEC 0x0080  /* Codec Negotiation */
155 #define BTA_AG_PEER_FEAT_HF_IND 0x0100 /* HF Indicators */
156 #define BTA_AG_PEER_FEAT_ESCO 0x0200   /* eSCO S4 (and T2) setting supported */
157 
158 /* Proprietary features: using bits after 12 */
159 
160 /* Pass unknown AT command responses to application */
161 #define BTA_AG_PEER_FEAT_UNAT 0x1000
162 #define BTA_AG_PEER_FEAT_VOIP 0x2000 /* VoIP call */
163 
164 typedef uint16_t tBTA_AG_PEER_FEAT;
165 
166 /* HFP peer supported codec masks */
167 // TODO(google) This should use common definitions
168 #define BTA_AG_CODEC_NONE BTM_SCO_CODEC_NONE
169 #define BTA_AG_CODEC_CVSD BTM_SCO_CODEC_CVSD /* CVSD */
170 #define BTA_AG_CODEC_MSBC BTM_SCO_CODEC_MSBC /* mSBC */
171 typedef uint16_t tBTA_AG_PEER_CODEC;
172 
173 /* HFP errcode - Set when BTA_AG_OK_ERROR is returned in 'ok_flag' */
174 #define BTA_AG_ERR_PHONE_FAILURE 0     /* Phone Failure */
175 #define BTA_AG_ERR_NO_CONN_PHONE 1     /* No connection to phone */
176 #define BTA_AG_ERR_OP_NOT_ALLOWED 3    /* Operation not allowed */
177 #define BTA_AG_ERR_OP_NOT_SUPPORTED 4  /* Operation not supported */
178 #define BTA_AG_ERR_PHSIM_PIN_REQ 5     /* PH-SIM PIN required */
179 #define BTA_AG_ERR_SIM_NOT_INSERTED 10 /* SIM not inserted */
180 #define BTA_AG_ERR_SIM_PIN_REQ 11      /* SIM PIN required */
181 #define BTA_AG_ERR_SIM_PUK_REQ 12      /* SIM PUK required */
182 #define BTA_AG_ERR_SIM_FAILURE 13      /* SIM failure */
183 #define BTA_AG_ERR_SIM_BUSY 14         /* SIM busy */
184 #define BTA_AG_ERR_INCORRECT_PWD 16    /* Incorrect password */
185 #define BTA_AG_ERR_SIM_PIN2_REQ 17     /* SIM PIN2 required */
186 #define BTA_AG_ERR_SIM_PUK2_REQ 18     /* SIM PUK2 required */
187 #define BTA_AG_ERR_MEMORY_FULL 20      /* Memory full */
188 #define BTA_AG_ERR_INVALID_INDEX 21    /* Invalid index */
189 #define BTA_AG_ERR_MEMORY_FAILURE 23   /* Memory failure */
190 #define BTA_AG_ERR_TEXT_TOO_LONG 24    /* Text string too long */
191 #define BTA_AG_ERR_INV_CHAR_IN_TSTR 25 /* Invalid characters in text string */
192 #define BTA_AG_ERR_DSTR_TOO_LONG 26    /* Dial string too long */
193 #define BTA_AG_ERR_INV_CHAR_IN_DSTR 27 /* Invalid characters in dial string */
194 #define BTA_AG_ERR_NO_NETWORK_SERV 30  /* No network service */
195 #define BTA_AG_ERR_NETWORK_TIME_OUT 31 /* Network timeout */
196 /* Network not allowed - emergency service only */
197 #define BTA_AG_ERR_NO_NET_EMG_ONLY 32
198 /* AG cannot create simultaneous VoIP and CS calls */
199 #define BTA_AG_ERR_VOIP_CS_CALLS 33
200 #define BTA_AG_ERR_NOT_FOR_VOIP 34  /* Not supported on this call type(VoIP) */
201 #define BTA_AG_ERR_SIP_RESP_CODE 35 /* SIP 3 digit response code */
202 
203 #if 0 /* Not Used in Bluetooth HFP 1.5 Specification */
204 #define BTA_AG_ERR_PHADAP_LNK_RES 2   /* Phone-adapter link reserved */
205 #define BTA_AG_ERR_PHFSIM_PIN_REQ 6   /* PH-FSIM PIN required */
206 #define BTA_AG_ERR_PHFSIM_PUK_REQ 7   /* PH-FSIM PUK required */
207 #define BTA_AG_ERR_SIM_WRONG 15       /* SIM wrong */
208 #define BTA_AG_ERR_NOT_FOUND 22       /* Not found */
209 #define BTA_AG_ERR_NETWORK_TIMEOUT 31 /* Network timeout */
210 #define BTA_AG_ERR_NET_PIN_REQ 40     /* Network personalization PIN required */
211 #define BTA_AG_ERR_NET_PUK_REQ 41     /* Network personalization PUK required */
212 /* Network subset personalization PIN required */
213 #define BTA_AG_ERR_SUBSET_PIN_REQ 42
214 /* Network subset personalization PUK required */
215 #define BTA_AG_ERR_SUBSET_PUK_REQ 43
216 /* Service provider personalization PIN required */
217 #define BTA_AG_ERR_SERVPRO_PIN_REQ 44
218 /* Service provider personalization PUK required */
219 #define BTA_AG_ERR_SERVPRO_PUK_REQ 45
220 /* Corporate personalization PIN required */
221 #define BTA_AG_ERR_CORP_PIN_REQ 46
222 /* Corporate personalization PUK required */
223 #define BTA_AG_ERR_CORP_PUK_REQ 47
224 #define BTA_AG_ERR_UNKNOWN 100 /* Unknown error */
225 
226 /* GPRS-related errors */
227 #define BTA_AG_ERR_ILL_MS 103  /* Illegal MS (#3) */
228 #define BTA_AG_ERR_ILL_ME 106  /* Illegal ME (#6) */
229 #define BTA_AG_ERR_GPRS_NOT_ALLOWED 107 /* GPRS services not allowed (#7) */
230 #define BTA_AG_ERR_PLMN_NOT_ALLOWED 111 /* PLMN services not allowed (#11) */
231 #define BTA_AG_ERR_LOC_NOT_ALLOWED 112  /* Location area not allowed (#12) */
232 /* Roaming not allowed in this location area (#13) */
233 #define BTA_AG_ERR_ROAM_NOT_ALLOWED 113
234 /* Errors related to a failure to Activate a Context */
235 #define BTA_AG_ERR_OPT_NOT_SUPP 132 /* Service option not supported (#32) */
236 /* Requested service option not subscribed (#33) */
237 #define BTA_AG_ERR_OPT_NOT_SUBSCR 133
238 /* Service option temporarily out of order (#34) */
239 #define BTA_AG_ERR_OPT_OUT_OF_ORDER 134
240 #define BTA_AG_ERR_PDP_AUTH_FAILURE 149 /* PDP authentication failure */
241 /* Other GPRS errors */
242 #define BTA_AG_ERR_INV_MOBILE_CLASS 150 /* Invalid mobile class */
243 #define BTA_AG_ERR_UNSPEC_GPRS_ERR 148  /* Unspecified GPRS error */
244 #endif                                  /* Unused error codes */
245 
246 /* HFP result data 'ok_flag' */
247 #define BTA_AG_OK_CONTINUE 0 /* Send out response (more responses coming) */
248 #define BTA_AG_OK_DONE 1     /* Send out response followed by OK (finished) */
249 #define BTA_AG_OK_ERROR 2    /* Error response */
250 
251 /* BTRH values */
252 #define BTA_AG_BTRH_SET_HOLD 0 /* Put incoming call on hold */
253 #define BTA_AG_BTRH_SET_ACC 1  /* Accept incoming call on hold */
254 #define BTA_AG_BTRH_SET_REJ 2  /* Reject incoming call on hold */
255 #define BTA_AG_BTRH_READ 3     /* Read the current value */
256 #define BTA_AG_BTRH_NO_RESP 4  /* Not in RH States (reply to read) */
257 
258 /* ASCII character string of arguments to the AT command or result */
259 #ifndef BTA_AG_AT_MAX_LEN
260 #define BTA_AG_AT_MAX_LEN 256
261 #endif
262 
263 /* data associated with BTA_AG_IND_RES */
264 typedef struct {
265   uint16_t id;
266   uint16_t value;
267   bool on_demand;
268 } tBTA_AG_IND;
269 
270 /* data type for BTA_AgResult() */
271 typedef struct {
272   char str[BTA_AG_AT_MAX_LEN + 1];
273   tBTA_AG_IND ind;
274   uint16_t num;
275   uint16_t audio_handle;
276   uint16_t errcode; /* Valid only if 'ok_flag' is set to BTA_AG_OK_ERROR */
277   uint8_t
278       ok_flag; /* Indicates if response is finished, and if error occurred */
279   bool state;
280 } tBTA_AG_RES_DATA;
281 
282 /* AG callback events */
283 #define BTA_AG_ENABLE_EVT 0      /* AG enabled */
284 #define BTA_AG_REGISTER_EVT 1    /* AG registered */
285 #define BTA_AG_OPEN_EVT 2        /* AG connection open */
286 #define BTA_AG_CLOSE_EVT 3       /* AG connection closed */
287 #define BTA_AG_CONN_EVT 4        /* Service level connection opened */
288 #define BTA_AG_AUDIO_OPEN_EVT 5  /* Audio connection open */
289 #define BTA_AG_AUDIO_CLOSE_EVT 6 /* Audio connection closed */
290 #define BTA_AG_SPK_EVT 7         /* Speaker volume changed */
291 #define BTA_AG_MIC_EVT 8         /* Microphone volume changed */
292 #define BTA_AG_AT_CKPD_EVT 9     /* CKPD from the HS */
293 #define BTA_AG_DISABLE_EVT 30    /* AG disabled */
294 #define BTA_AG_WBS_EVT 31 /* SCO codec info */
295 /* Values below are for HFP only */
296 #define BTA_AG_AT_A_EVT 10    /* Answer a call */
297 #define BTA_AG_AT_D_EVT 11    /* Place a call using number or memory dial */
298 #define BTA_AG_AT_CHLD_EVT 12 /* Call hold */
299 #define BTA_AG_AT_CHUP_EVT 13 /* Hang up a call */
300 #define BTA_AG_AT_CIND_EVT 14 /* Read indicator settings */
301 #define BTA_AG_AT_VTS_EVT 15  /* Transmit DTMF tone */
302 #define BTA_AG_AT_BINP_EVT 16 /* Retrieve number from voice tag */
303 #define BTA_AG_AT_BLDN_EVT 17 /* Place call to last dialed number */
304 #define BTA_AG_AT_BVRA_EVT 18 /* Enable/disable voice recognition */
305 #define BTA_AG_AT_NREC_EVT 19 /* Disable echo canceling */
306 #define BTA_AG_AT_CNUM_EVT 20 /* Retrieve subscriber number */
307 #define BTA_AG_AT_BTRH_EVT 21 /* CCAP-style incoming call hold */
308 #define BTA_AG_AT_CLCC_EVT 22 /* Query list of current calls */
309 #define BTA_AG_AT_COPS_EVT 23 /* Query list of current calls */
310 #define BTA_AG_AT_UNAT_EVT 24 /* Unknown AT command */
311 #define BTA_AG_AT_CBC_EVT 25  /* Battery Level report from HF */
312 #define BTA_AG_AT_BAC_EVT 26  /* avablable codec */
313 #define BTA_AG_AT_BCS_EVT 27  /* Codec select */
314 #define BTA_AG_AT_BIND_EVT 28 /* HF indicator */
315 #define BTA_AG_AT_BIEV_EVT 29 /* HF indicator updates from peer */
316 
317 typedef uint8_t tBTA_AG_EVT;
318 
319 /* data associated with most non-AT events */
320 typedef struct {
321   uint16_t handle;
322   uint8_t app_id;
323   tBTA_AG_STATUS status;
324 } tBTA_AG_HDR;
325 
326 /* data associated with BTA_AG_REGISTER_EVT */
327 typedef struct {
328   tBTA_AG_HDR hdr;
329   tBTA_AG_STATUS status;
330 } tBTA_AG_REGISTER;
331 
332 /* data associated with BTA_AG_OPEN_EVT */
333 typedef struct {
334   tBTA_AG_HDR hdr;
335   BD_ADDR bd_addr;
336   tBTA_SERVICE_ID service_id;
337   tBTA_AG_STATUS status;
338 } tBTA_AG_OPEN;
339 
340 /* data associated with BTA_AG_CLOSE_EVT */
341 typedef struct {
342   tBTA_AG_HDR hdr;
343   BD_ADDR bd_addr;
344 } tBTA_AG_CLOSE;
345 
346 /* data associated with BTA_AG_CONN_EVT */
347 typedef struct {
348   tBTA_AG_HDR hdr;
349   tBTA_AG_PEER_FEAT peer_feat;
350   BD_ADDR bd_addr;
351   tBTA_AG_PEER_CODEC peer_codec;
352 } tBTA_AG_CONN;
353 
354 /* data associated with AT command event */
355 typedef struct {
356   tBTA_AG_HDR hdr;
357   BD_ADDR bd_addr;
358   char str[BTA_AG_AT_MAX_LEN + 1];
359   uint16_t num;
360   uint8_t idx;   /* call number used by CLCC and CHLD */
361   uint16_t lidx; /* long index, ex, HF indicator */
362 } tBTA_AG_VAL;
363 
364 /* union of data associated with AG callback */
365 typedef union {
366   tBTA_AG_HDR hdr;
367   tBTA_AG_REGISTER reg;
368   tBTA_AG_OPEN open;
369   tBTA_AG_CLOSE close;
370   tBTA_AG_CONN conn;
371   tBTA_AG_VAL val;
372 } tBTA_AG;
373 
374 /* AG callback */
375 typedef void(tBTA_AG_CBACK)(tBTA_AG_EVT event, tBTA_AG* p_data);
376 
377 /* indicator constants HFP 1.1 and later */
378 #define BTA_AG_IND_CALL 1      /* position of call indicator */
379 #define BTA_AG_IND_CALLSETUP 2 /* position of callsetup indicator */
380 #define BTA_AG_IND_SERVICE 3   /* position of service indicator */
381 
382 /* indicator constants HFP 1.5 and later */
383 #define BTA_AG_IND_SIGNAL 4   /* position of signal strength indicator */
384 #define BTA_AG_IND_ROAM 5     /* position of roaming indicator */
385 #define BTA_AG_IND_BATTCHG 6  /* position of battery charge indicator */
386 #define BTA_AG_IND_CALLHELD 7 /* position of callheld indicator */
387 #define BTA_AG_IND_BEARER 8   /* position of bearer indicator */
388 
389 /* call indicator values */
390 #define BTA_AG_CALL_INACTIVE 0 /* Phone call inactive */
391 #define BTA_AG_CALL_ACTIVE 1   /* Phone call active */
392 
393 /* callsetup indicator values */
394 #define BTA_AG_CALLSETUP_NONE 0     /* Not currently in call set up */
395 #define BTA_AG_CALLSETUP_INCOMING 1 /* Incoming call process ongoing */
396 #define BTA_AG_CALLSETUP_OUTGOING 2 /* Outgoing call set up is ongoing */
397 /* Remote party being alerted in an outgoing call */
398 #define BTA_AG_CALLSETUP_ALERTING 3
399 
400 /* service indicator values */
401 #define BTA_AG_SERVICE_NONE 0    /* Neither CS nor VoIP service is available */
402 #define BTA_AG_SERVICE_CS 1      /* Only CS service is available */
403 #define BTA_AG_SERVICE_VOIP 2    /* Only VoIP service is available */
404 #define BTA_AG_SERVICE_CS_VOIP 3 /* Both CS and VoIP services available */
405 
406 /* callheld indicator values */
407 #define BTA_AG_CALLHELD_INACTIVE 0 /* No held calls */
408 #define BTA_AG_CALLHELD_ACTIVE 1   /* Call held and call active */
409 #define BTA_AG_CALLHELD_NOACTIVE 2 /* Call held and no call active */
410 
411 /* signal strength indicator values */
412 #define BTA_AG_ROAMING_INACTIVE 0 /* Phone call inactive */
413 #define BTA_AG_ROAMING_ACTIVE 1   /* Phone call active */
414 
415 /* bearer indicator values */
416 #define BTA_AG_BEARER_WLAN 0      /* WLAN         */
417 #define BTA_AG_BEARER_BLUETOOTH 1 /* Bluetooth    */
418 #define BTA_AG_BEARER_WIRED 2     /* Wired        */
419 #define BTA_AG_BEARER_2G3G 3      /* 2G 3G        */
420 #define BTA_AG_BEARER_WIMAX 4     /* WIMAX        */
421 #define BTA_AG_BEARER_RES1 5      /* Reserved     */
422 #define BTA_AG_BEARER_RES2 6      /* Reserved     */
423 #define BTA_AG_BEARER_RES3 7      /* Reserved     */
424 
425 /* type for HF indicator */
426 typedef struct {
427   uint16_t ind_id;
428   bool is_supported;
429   bool is_enable;
430   uint32_t ind_min_val;
431   uint32_t ind_max_val;
432 } tBTA_AG_HF_IND;
433 
434 /* AG configuration structure */
435 typedef struct {
436   const char* cind_info;
437   const char* bind_info;
438   uint8_t num_local_hf_ind;
439   int32_t conn_tout;
440   uint16_t sco_pkt_types;
441   const char* chld_val_ecc;
442   const char* chld_val;
443 } tBTA_AG_CFG;
444 
445 /*****************************************************************************
446  *  External Function Declarations
447  ****************************************************************************/
448 
449 /*******************************************************************************
450  *
451  * Function         BTA_AgEnable
452  *
453  * Description      Enable the audio gateway service. When the enable
454  *                  operation is complete the callback function will be
455  *                  called with a BTA_AG_ENABLE_EVT. This function must
456  *                  be called before other function in the AG API are
457  *                  called.
458  *
459  * Returns          BTA_SUCCESS if OK, BTA_FAILURE otherwise.
460  *
461  ******************************************************************************/
462 tBTA_STATUS BTA_AgEnable(tBTA_AG_PARSE_MODE parse_mode, tBTA_AG_CBACK* p_cback);
463 
464 /*******************************************************************************
465  *
466  * Function         BTA_AgDisable
467  *
468  * Description      Disable the audio gateway service
469  *
470  *
471  * Returns          void
472  *
473  ******************************************************************************/
474 void BTA_AgDisable(void);
475 
476 /*******************************************************************************
477  *
478  * Function         BTA_AgRegister
479  *
480  * Description      Register an Audio Gateway service.
481  *
482  *
483  * Returns          void
484  *
485  ******************************************************************************/
486 void BTA_AgRegister(tBTA_SERVICE_MASK services, tBTA_SEC sec_mask,
487                     tBTA_AG_FEAT features, const char* p_service_names[],
488                     uint8_t app_id);
489 
490 /*******************************************************************************
491  *
492  * Function         BTA_AgDeregister
493  *
494  * Description      Deregister an audio gateway service.
495  *
496  *
497  * Returns          void
498  *
499  ******************************************************************************/
500 void BTA_AgDeregister(uint16_t handle);
501 
502 /*******************************************************************************
503  *
504  * Function         BTA_AgOpen
505  *
506  * Description      Opens a connection to a headset or hands-free device.
507  *                  When connection is open callback function is called
508  *                  with a BTA_AG_OPEN_EVT. Only the data connection is
509  *                  opened. The audio connection is not opened.
510  *
511  *
512  * Returns          void
513  *
514  ******************************************************************************/
515 void BTA_AgOpen(uint16_t handle, BD_ADDR bd_addr, tBTA_SEC sec_mask,
516                 tBTA_SERVICE_MASK services);
517 
518 /*******************************************************************************
519  *
520  * Function         BTA_AgClose
521  *
522  * Description      Close the current connection to a headset or a handsfree
523  *                  Any current audio connection will also be closed
524  *
525  *
526  * Returns          void
527  *
528  ******************************************************************************/
529 void BTA_AgClose(uint16_t handle);
530 
531 /*******************************************************************************
532  *
533  * Function         BTA_AgAudioOpen
534  *
535  * Description      Opens an audio connection to the currently connected
536  *                  headset or hnadsfree
537  *
538  *
539  * Returns          void
540  *
541  ******************************************************************************/
542 void BTA_AgAudioOpen(uint16_t handle);
543 
544 /*******************************************************************************
545  *
546  * Function         BTA_AgAudioClose
547  *
548  * Description      Close the currently active audio connection to a headset
549  *                  or hnadsfree. The data connection remains open
550  *
551  *
552  * Returns          void
553  *
554  ******************************************************************************/
555 void BTA_AgAudioClose(uint16_t handle);
556 
557 /*******************************************************************************
558  *
559  * Function         BTA_AgResult
560  *
561  * Description      Send an AT result code to a headset or hands-free device.
562  *                  This function is only used when the AG parse mode is set
563  *                  to BTA_AG_PARSE.
564  *
565  *
566  * Returns          void
567  *
568  ******************************************************************************/
569 void BTA_AgResult(uint16_t handle, tBTA_AG_RES result,
570                   tBTA_AG_RES_DATA* p_data);
571 
572 /*******************************************************************************
573  *
574  * Function         BTA_AgSetCodec
575  *
576  * Description      Specify the codec type to be used for the subsequent
577  *                  audio connection.
578  *
579  *
580  *
581  * Returns          void
582  *
583  ******************************************************************************/
584 void BTA_AgSetCodec(uint16_t handle, tBTA_AG_PEER_CODEC codec);
585 
586 #endif /* BTA_AG_API_H */
587