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 main implementation file for the BTA audio gateway.
22  *
23  ******************************************************************************/
24 
25 #include <string.h>
26 #include <stdlib.h>
27 #include "bta_ag_int.h"
28 #include "bta/bta_api.h"
29 #include "bta/bta_sys.h"
30 #include "bta/bta_ag_api.h"
31 #include "bta/bta_ag_co.h"
32 #include "bta/utl.h"
33 #include "common/bt_defs.h"
34 #include "common/bt_trace.h"
35 #include "osi/allocator.h"
36 
37 #if (BTA_AG_INCLUDED == TRUE)
38 /*****************************************************************************
39 ** Constants and types
40 *****************************************************************************/
41 #ifndef BTA_AG_DEBUG
42 #define BTA_AG_DEBUG TRUE
43 #endif
44 
45 #if BTA_AG_DEBUG == TRUE
46 static char *bta_ag_evt_str(UINT16 event, tBTA_AG_RES result);
47 static char *bta_ag_state_str(UINT8 state);
48 #endif
49 
50 /* state machine states */
51 enum
52 {
53     BTA_AG_INIT_ST,
54     BTA_AG_OPENING_ST,
55     BTA_AG_OPEN_ST,
56     BTA_AG_CLOSING_ST
57 };
58 
59 /* state machine action enumeration list */
60 enum
61 {
62     BTA_AG_REGISTER,
63     BTA_AG_DEREGISTER,
64     BTA_AG_START_OPEN,
65     BTA_AG_RFC_DO_OPEN,
66     BTA_AG_RFC_DO_CLOSE,
67     BTA_AG_START_DEREG,
68     BTA_AG_START_CLOSE,
69     BTA_AG_RFC_OPEN,
70     BTA_AG_OPEN_FAIL,
71     BTA_AG_RFC_ACP_OPEN,
72     BTA_AG_RFC_CLOSE,
73     BTA_AG_RFC_FAIL,
74     BTA_AG_RFC_DATA,
75     BTA_AG_DISC_INT_RES,
76     BTA_AG_DISC_FAIL,
77     BTA_AG_DISC_ACP_RES,
78     BTA_AG_FREE_DB,
79     BTA_AG_SCO_CONN_OPEN,
80     BTA_AG_SCO_CONN_CLOSE,
81     BTA_AG_SCO_LISTEN,
82     BTA_AG_SCO_OPEN,
83     BTA_AG_SCO_CLOSE,
84     BTA_AG_SCO_SHUTDOWN,
85     BTA_AG_POST_SCO_OPEN,
86     BTA_AG_POST_SCO_CLOSE,
87     BTA_AG_SVC_CONN_OPEN,
88     BTA_AG_RESULT,
89     BTA_AG_SETCODEC,
90     BTA_AG_SEND_RING,
91     BTA_AG_CI_SCO_DATA,
92     BTA_AG_CI_RX_DATA,
93     BTA_AG_RCVD_SLC_READY,
94     BTA_AG_NUM_ACTIONS
95 };
96 
97 #define BTA_AG_IGNORE       BTA_AG_NUM_ACTIONS
98 
99 /* type for action functions */
100 typedef void (*tBTA_AG_ACTION) (tBTA_AG_SCB *p_scb, tBTA_AG_DATA *p_data);
101 
102 /* action functions */
103 const tBTA_AG_ACTION bta_ag_action[] =
104 {
105     bta_ag_register,
106     bta_ag_deregister,
107     bta_ag_start_open,
108     bta_ag_rfc_do_open,
109     bta_ag_rfc_do_close,
110     bta_ag_start_dereg,
111     bta_ag_start_close,
112     bta_ag_rfc_open,
113     bta_ag_open_fail,
114     bta_ag_rfc_acp_open,
115     bta_ag_rfc_close,
116     bta_ag_rfc_fail,
117     bta_ag_rfc_data,
118     bta_ag_disc_int_res,
119     bta_ag_disc_fail,
120     bta_ag_disc_acp_res,
121     bta_ag_free_db,
122     bta_ag_sco_conn_open,
123     bta_ag_sco_conn_close,
124     bta_ag_sco_listen,
125     bta_ag_sco_open,
126     bta_ag_sco_close,
127     bta_ag_sco_shutdown,
128     bta_ag_post_sco_open,
129     bta_ag_post_sco_close,
130     bta_ag_svc_conn_open,
131     bta_ag_result,
132     bta_ag_setcodec,
133     bta_ag_send_ring,
134     bta_ag_ci_sco_data,
135     bta_ag_ci_rx_data,
136     bta_ag_rcvd_slc_ready
137 };
138 
139 /* state table information */
140 #define BTA_AG_ACTIONS              2       /* number of actions */
141 #define BTA_AG_NEXT_STATE           2       /* position of next state */
142 #define BTA_AG_NUM_COLS             3       /* number of columns in state tables */
143 
144 /* state table for init state */
145 const UINT8 bta_ag_st_init[][BTA_AG_NUM_COLS] =
146 {
147 /* Event                    Action 1                Action 2                Next state */
148 /* API_REGISTER_EVT */      {BTA_AG_REGISTER,       BTA_AG_IGNORE,          BTA_AG_INIT_ST},
149 /* API_DEREGISTER_EVT */    {BTA_AG_DEREGISTER,     BTA_AG_IGNORE,          BTA_AG_INIT_ST},
150 /* API_OPEN_EVT */          {BTA_AG_START_OPEN,     BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
151 /* API_CLOSE_EVT */         {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
152 /* API_AUDIO_OPEN_EVT */    {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
153 /* API_AUDIO_CLOSE_EVT */   {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
154 /* API_RESULT_EVT */        {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
155 /* API_SETCODEC_EVT */      {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
156 /* RFC_OPEN_EVT */          {BTA_AG_RFC_ACP_OPEN,   BTA_AG_SCO_LISTEN,      BTA_AG_OPEN_ST},
157 /* RFC_CLOSE_EVT */         {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
158 /* RFC_SRV_CLOSE_EVT */     {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
159 /* RFC_DATA_EVT */          {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
160 /* SCO_OPEN_EVT */          {BTA_AG_SCO_CONN_OPEN,  BTA_AG_IGNORE,          BTA_AG_INIT_ST},
161 /* SCO_CLOSE_EVT */         {BTA_AG_SCO_CONN_CLOSE, BTA_AG_IGNORE,          BTA_AG_INIT_ST},
162 /* DISC_ACP_RES_EVT */      {BTA_AG_FREE_DB,        BTA_AG_IGNORE,          BTA_AG_INIT_ST},
163 /* DISC_INT_RES_EVT */      {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
164 /* DISC_OK_EVT */           {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
165 /* DISC_FAIL_EVT */         {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
166 /* CI_RX_WRITE_EVT */       {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
167 /* RING_TOUT_EVT */         {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
168 /* SVC_TOUT_EVT */          {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
169 /* CI_SCO_DATA_EVT */       {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST},
170 /* CI_SLC_READY_EVT */      {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_INIT_ST}
171 };
172 
173 /* state table for opening state */
174 const UINT8 bta_ag_st_opening[][BTA_AG_NUM_COLS] =
175 {
176 /* Event                    Action 1                Action 2                Next state */
177 /* API_REGISTER_EVT */      {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
178 /* API_DEREGISTER_EVT */    {BTA_AG_RFC_DO_CLOSE,   BTA_AG_START_DEREG,     BTA_AG_CLOSING_ST},
179 /* API_OPEN_EVT */          {BTA_AG_OPEN_FAIL,      BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
180 /* API_CLOSE_EVT */         {BTA_AG_RFC_DO_CLOSE,   BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
181 /* API_AUDIO_OPEN_EVT */    {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
182 /* API_AUDIO_CLOSE_EVT */   {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
183 /* API_RESULT_EVT */        {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
184 /* API_SETCODEC_EVT */      {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
185 /* RFC_OPEN_EVT */          {BTA_AG_RFC_OPEN,       BTA_AG_SCO_LISTEN,      BTA_AG_OPEN_ST},
186 /* RFC_CLOSE_EVT */         {BTA_AG_RFC_FAIL,       BTA_AG_IGNORE,          BTA_AG_INIT_ST},
187 /* RFC_SRV_CLOSE_EVT */     {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
188 /* RFC_DATA_EVT */          {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
189 /* SCO_OPEN_EVT */          {BTA_AG_SCO_CONN_OPEN,  BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
190 /* SCO_CLOSE_EVT */         {BTA_AG_SCO_CONN_CLOSE, BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
191 /* DISC_ACP_RES_EVT */      {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
192 /* DISC_INT_RES_EVT */      {BTA_AG_DISC_INT_RES,   BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
193 /* DISC_OK_EVT */           {BTA_AG_RFC_DO_OPEN,    BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
194 /* DISC_FAIL_EVT */         {BTA_AG_DISC_FAIL,      BTA_AG_IGNORE,          BTA_AG_INIT_ST},
195 /* CI_RX_WRITE_EVT */       {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
196 /* RING_TOUT_EVT */         {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
197 /* SVC_TOUT_EVT */          {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
198 /* CI_SCO_DATA_EVT */       {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPENING_ST},
199 /* CI_SLC_READY_EVT */      {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPENING_ST}
200 };
201 
202 /* state table for open state */
203 const UINT8 bta_ag_st_open[][BTA_AG_NUM_COLS] =
204 {
205 /* Event                    Action 1                Action 2                Next state */
206 /* API_REGISTER_EVT */      {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
207 /* API_DEREGISTER_EVT */    {BTA_AG_START_CLOSE,    BTA_AG_START_DEREG,     BTA_AG_CLOSING_ST},
208 /* API_OPEN_EVT */          {BTA_AG_OPEN_FAIL,      BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
209 /* API_CLOSE_EVT */         {BTA_AG_START_CLOSE,    BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
210 /* API_AUDIO_OPEN_EVT */    {BTA_AG_SCO_OPEN,       BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
211 /* API_AUDIO_CLOSE_EVT */   {BTA_AG_SCO_CLOSE,      BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
212 /* API_RESULT_EVT */        {BTA_AG_RESULT,         BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
213 /* API_SETCODEC_EVT */      {BTA_AG_SETCODEC,       BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
214 /* RFC_OPEN_EVT */          {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
215 /* RFC_CLOSE_EVT */         {BTA_AG_RFC_CLOSE,      BTA_AG_IGNORE,          BTA_AG_INIT_ST},
216 /* RFC_SRV_CLOSE_EVT */     {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
217 /* RFC_DATA_EVT */          {BTA_AG_RFC_DATA,       BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
218 /* SCO_OPEN_EVT */          {BTA_AG_SCO_CONN_OPEN,  BTA_AG_POST_SCO_OPEN,   BTA_AG_OPEN_ST},
219 /* SCO_CLOSE_EVT */         {BTA_AG_SCO_CONN_CLOSE, BTA_AG_POST_SCO_CLOSE,  BTA_AG_OPEN_ST},
220 /* DISC_ACP_RES_EVT */      {BTA_AG_DISC_ACP_RES,   BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
221 /* DISC_INT_RES_EVT */      {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
222 /* DISC_OK_EVT */           {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
223 /* DISC_FAIL_EVT */         {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
224 /* CI_RX_WRITE_EVT */       {BTA_AG_CI_RX_DATA,     BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
225 /* RING_TOUT_EVT */         {BTA_AG_SEND_RING,      BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
226 /* SVC_TOUT_EVT */          {BTA_AG_START_CLOSE,    BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
227 /* CI_SCO_DATA_EVT */       {BTA_AG_CI_SCO_DATA,    BTA_AG_IGNORE,          BTA_AG_OPEN_ST},
228 /* CI_SLC_READY_EVT */      {BTA_AG_RCVD_SLC_READY, BTA_AG_IGNORE,          BTA_AG_OPEN_ST}
229 };
230 
231 /* state table for closing state */
232 const UINT8 bta_ag_st_closing[][BTA_AG_NUM_COLS] =
233 {
234 /* Event                    Action 1                Action 2                Next state */
235 /* API_REGISTER_EVT */      {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
236 /* API_DEREGISTER_EVT */    {BTA_AG_START_DEREG,    BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
237 /* API_OPEN_EVT */          {BTA_AG_OPEN_FAIL,      BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
238 /* API_CLOSE_EVT */         {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
239 /* API_AUDIO_OPEN_EVT */    {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
240 /* API_AUDIO_CLOSE_EVT */   {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
241 /* API_RESULT_EVT */        {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
242 /* API_SETCODEC_EVT */      {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
243 /* RFC_OPEN_EVT */          {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
244 /* RFC_CLOSE_EVT */         {BTA_AG_RFC_CLOSE,      BTA_AG_IGNORE,          BTA_AG_INIT_ST},
245 /* RFC_SRV_CLOSE_EVT */     {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
246 /* RFC_DATA_EVT */          {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
247 /* SCO_OPEN_EVT */          {BTA_AG_SCO_CONN_OPEN,  BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
248 /* SCO_CLOSE_EVT */         {BTA_AG_SCO_CONN_CLOSE, BTA_AG_POST_SCO_CLOSE,  BTA_AG_CLOSING_ST},
249 /* DISC_ACP_RES_EVT */      {BTA_AG_FREE_DB,        BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
250 /* DISC_INT_RES_EVT */      {BTA_AG_FREE_DB,        BTA_AG_IGNORE,          BTA_AG_INIT_ST},
251 /* DISC_OK_EVT */           {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
252 /* DISC_FAIL_EVT */         {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
253 /* CI_RX_WRITE_EVT */       {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
254 /* RING_TOUT_EVT */         {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
255 /* SVC_TOUT_EVT */          {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
256 /* CI_SCO_DATA_EVT */       {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST},
257 /* CI_SLC_READY_EVT */      {BTA_AG_IGNORE,         BTA_AG_IGNORE,          BTA_AG_CLOSING_ST}
258 };
259 
260 /* type for state table */
261 typedef const UINT8 (*tBTA_AG_ST_TBL)[BTA_AG_NUM_COLS];
262 
263 /* state table */
264 const tBTA_AG_ST_TBL bta_ag_st_tbl[] =
265 {
266     bta_ag_st_init,
267     bta_ag_st_opening,
268     bta_ag_st_open,
269     bta_ag_st_closing
270 };
271 
272 /*****************************************************************************
273 ** Global data
274 *****************************************************************************/
275 const uint16_t bta_ag_version = HFP_VERSION_1_8;
276 /* AG control block */
277 #if BTA_DYNAMIC_MEMORY == FALSE
278 tBTA_AG_CB  bta_ag_cb;
279 #else
280 tBTA_AG_CB  *bta_ag_cb_ptr;
281 #endif
282 
283 #if BTA_AG_DEBUG == TRUE
bta_ag_evt_str(UINT16 event,tBTA_AG_RES result)284 static char *bta_ag_evt_str(UINT16 event, tBTA_AG_RES result)
285 {
286     switch (event)
287     {
288     case BTA_AG_API_REGISTER_EVT:
289         return "Register Request";
290     case BTA_AG_API_DEREGISTER_EVT:
291         return "Deregister Request";
292     case BTA_AG_API_OPEN_EVT:
293         return "Open SLC Request";
294     case BTA_AG_API_CLOSE_EVT:
295         return "Close SLC Request";
296     case BTA_AG_API_AUDIO_OPEN_EVT:
297         return "Open Audio Request";
298     case BTA_AG_API_AUDIO_CLOSE_EVT:
299         return "Close Audio Request";
300     case BTA_AG_API_RESULT_EVT:
301         switch (result) {
302             case BTA_AG_SPK_RES:            return ("AT Result  BTA_AG_SPK_RES");
303             case BTA_AG_MIC_RES:            return ("AT Result  BTA_AG_MIC_RES");
304             case BTA_AG_INBAND_RING_RES:    return ("AT Result  BTA_AG_INBAND_RING_RES");
305             case BTA_AG_CIND_RES:           return ("AT Result  BTA_AG_CIND_RES");
306             case BTA_AG_BINP_RES:           return ("AT Result  BTA_AG_BINP_RES");
307             case BTA_AG_IND_RES:            return ("AT Result  BTA_AG_IND_RES");
308             case BTA_AG_BVRA_RES:           return ("AT Result  BTA_AG_BVRA_RES");
309             case BTA_AG_CNUM_RES:           return ("AT Result  BTA_AG_CNUM_RES");
310             case BTA_AG_BTRH_RES:           return ("AT Result  BTA_AG_BTRH_RES");
311             case BTA_AG_CLCC_RES:           return ("AT Result  BTA_AG_CLCC_RES");
312             case BTA_AG_COPS_RES:           return ("AT Result  BTA_AG_COPS_RES");
313             case BTA_AG_IN_CALL_RES:        return ("AT Result  BTA_AG_IN_CALL_RES");
314             case BTA_AG_IN_CALL_CONN_RES:   return ("AT Result  BTA_AG_IN_CALL_CONN_RES");
315             case BTA_AG_CALL_WAIT_RES:      return ("AT Result  BTA_AG_CALL_WAIT_RES");
316             case BTA_AG_OUT_CALL_ORIG_RES:  return ("AT Result  BTA_AG_OUT_CALL_ORIG_RES");
317             case BTA_AG_OUT_CALL_ALERT_RES: return ("AT Result  BTA_AG_OUT_CALL_ALERT_RES");
318             case BTA_AG_OUT_CALL_CONN_RES:  return ("AT Result  BTA_AG_OUT_CALL_CONN_RES");
319             case BTA_AG_CALL_CANCEL_RES:    return ("AT Result  BTA_AG_CALL_CANCEL_RES");
320             case BTA_AG_END_CALL_RES:       return ("AT Result  BTA_AG_END_CALL_RES");
321             case BTA_AG_UNAT_RES:           return ("AT Result  BTA_AG_UNAT_RES");
322             default:                        return ("Unknown AG Result");
323         }
324     case BTA_AG_API_SETCODEC_EVT:
325         return "Set Codec Request";
326     case BTA_AG_RFC_OPEN_EVT:
327         return "RFC Opened";
328     case BTA_AG_RFC_CLOSE_EVT:
329         return "RFC Closed";
330     case BTA_AG_RFC_SRV_CLOSE_EVT:
331         return "RFC SRV Closed";
332     case BTA_AG_RFC_DATA_EVT:
333         return "RFC Data";
334     case BTA_AG_SCO_OPEN_EVT:
335         return "Audio Opened";
336     case BTA_AG_SCO_CLOSE_EVT:
337         return "Audio Closed";
338     case BTA_AG_DISC_ACP_RES_EVT:
339         return "Discovery ACP Result";
340     case BTA_AG_DISC_INT_RES_EVT:
341         return "Discovery INT Result";
342     case BTA_AG_DISC_OK_EVT:
343         return "Discovery OK";
344     case BTA_AG_DISC_FAIL_EVT:
345         return "Discovery Failed";
346     case BTA_AG_CI_RX_WRITE_EVT:
347         return "CI RX Write";
348     case BTA_AG_RING_TOUT_EVT:
349         return "Ring Timeout";
350     case BTA_AG_SVC_TOUT_EVT:
351         return "Service Timeout";
352     case BTA_AG_API_ENABLE_EVT:
353         return "Enable AG";
354     case BTA_AG_API_DISABLE_EVT:
355         return "Disable AG";
356     case BTA_AG_CI_SCO_DATA_EVT:
357         return "SCO data Callin";
358     case BTA_AG_CI_SLC_READY_EVT:
359         return "SLC Ready Callin";
360     default:
361         return "Unknown AG Event";
362     }
363 }
364 
bta_ag_state_str(UINT8 state)365 static char *bta_ag_state_str(UINT8 state)
366 {
367     switch (state) {
368     case BTA_AG_INIT_ST:
369         return "Initial";
370     case BTA_AG_OPENING_ST:
371         return "Opening";
372     case BTA_AG_OPEN_ST:
373         return "Open";
374     case BTA_AG_CLOSING_ST:
375         return "Closing";
376     default:
377         return "Unknown AG State";
378     }
379 }
380 
381 #endif
382 
383 /*******************************************************************************
384 **
385 ** Function         bta_ag_timer_cback
386 **
387 ** Description      AG timer callback.
388 **
389 **
390 ** Returns          void
391 **
392 *******************************************************************************/
bta_ag_timer_cback(void * p)393 static void bta_ag_timer_cback(void *p)
394 {
395     BT_HDR          *p_buf;
396     TIMER_LIST_ENT  *p_tle = (TIMER_LIST_ENT *) p;
397 
398     if ((p_buf = (BT_HDR *) osi_malloc(sizeof(BT_HDR))) != NULL) {
399         p_buf->event = p_tle->event;
400         p_buf->layer_specific = bta_ag_scb_to_idx((tBTA_AG_SCB *) p_tle->param);
401         bta_sys_sendmsg(p_buf);
402     }
403 }
404 
405 /*******************************************************************************
406 **
407 ** Function         bta_ag_scb_alloc
408 **
409 ** Description      Allocate an AG service control block.
410 **
411 **
412 ** Returns          pointer to the scb, or NULL if none could be allocated.
413 **
414 *******************************************************************************/
bta_ag_scb_alloc(void)415 static tBTA_AG_SCB *bta_ag_scb_alloc(void)
416 {
417     tBTA_AG_SCB     *p_scb = &bta_ag_cb.scb[0];
418     int             i;
419 
420     for (i = 0; i < BTA_AG_NUM_SCB; i++, p_scb++) {
421         if (!p_scb->in_use) {
422             /* initialize variables */
423             p_scb->in_use = TRUE;
424             p_scb->sco_idx = BTM_INVALID_SCO_INDEX;
425 #if (BTM_WBS_INCLUDED == TRUE)
426             p_scb->codec_updated = FALSE;
427 #endif
428             /* set up timers */
429             p_scb->act_timer.param = (UINT32) p_scb;
430             p_scb->act_timer.p_cback = bta_ag_timer_cback;
431 #if (BTM_WBS_INCLUDED == TRUE)
432             /* set eSCO mSBC setting to T2 as the preferred */
433             p_scb->codec_msbc_settings = BTA_AG_SCO_MSBC_SETTINGS_T2;
434 #endif
435             APPL_TRACE_DEBUG("bta_ag_scb_alloc %d", bta_ag_scb_to_idx(p_scb));
436             break;
437         }
438     }
439 
440     if (i == BTA_AG_NUM_SCB) {
441         p_scb = NULL;        /* out of scbs */
442         APPL_TRACE_WARNING("Out of ag scbs");
443     }
444     return p_scb;
445 }
446 
447 /*******************************************************************************
448 **
449 ** Function         bta_ag_scb_dealloc
450 **
451 ** Description      Deallocate a service control block.
452 **
453 **
454 ** Returns          void
455 **
456 *******************************************************************************/
bta_ag_scb_dealloc(tBTA_AG_SCB * p_scb)457 void bta_ag_scb_dealloc(tBTA_AG_SCB *p_scb)
458 {
459     UINT8   idx;
460     BOOLEAN allocated = FALSE;
461 
462     APPL_TRACE_DEBUG("bta_ag_scb_dealloc %d", bta_ag_scb_to_idx(p_scb));
463     /* stop timers */
464     bta_sys_free_timer(&p_scb->act_timer);
465 #if (BTM_WBS_INCLUDED == TRUE)
466     bta_sys_free_timer(&p_scb->cn_timer);
467 #endif
468     bta_sys_free_timer(&p_scb->colli_timer);
469 
470     /* initialize control block */
471     memset(p_scb, 0, sizeof(tBTA_AG_SCB));
472     p_scb->sco_idx = BTM_INVALID_SCO_INDEX;
473     /* If all scbs are deallocated, callback with disable event */
474     if (!bta_sys_is_register (BTA_ID_AG)) {
475         for (idx = 0; idx < BTA_AG_NUM_SCB; idx++) {
476             if (bta_ag_cb.scb[idx].in_use) {
477                 allocated = TRUE;
478                 break;
479             }
480         }
481         if (!allocated) {
482             (*bta_ag_cb.p_cback)(BTA_AG_DISABLE_EVT, NULL);
483         }
484     }
485 }
486 
487 /*******************************************************************************
488 **
489 ** Function         bta_ag_scb_to_idx
490 **
491 ** Description      Given a pointer to an scb, return its index.
492 **
493 **
494 ** Returns          Index of scb.
495 **
496 *******************************************************************************/
bta_ag_scb_to_idx(tBTA_AG_SCB * p_scb)497 UINT16 bta_ag_scb_to_idx(tBTA_AG_SCB *p_scb)
498 {
499     /* use array arithmetic to determine index */
500     return ((UINT16) (p_scb - bta_ag_cb.scb)) + 1;
501 }
502 
503 /*******************************************************************************
504 **
505 ** Function         bta_ag_scb_by_idx
506 **
507 ** Description      Given an scb index return pointer to scb.
508 **
509 **
510 ** Returns          Pointer to scb or NULL if not allocated.
511 **
512 *******************************************************************************/
bta_ag_scb_by_idx(UINT16 idx)513 tBTA_AG_SCB *bta_ag_scb_by_idx(UINT16 idx)
514 {
515     tBTA_AG_SCB     *p_scb;
516     /* verify index */
517     if (idx > 0 && idx <= BTA_AG_NUM_SCB) {
518         p_scb = &bta_ag_cb.scb[idx - 1];
519         if (!p_scb->in_use) {
520             p_scb = NULL;
521             APPL_TRACE_WARNING("ag scb idx %d not allocated", idx);
522         }
523     } else {
524         p_scb = NULL;
525         APPL_TRACE_DEBUG("ag scb idx %d out of range", idx);
526     }
527     return p_scb;
528 }
529 
530 /*******************************************************************************
531 **
532 ** Function         bta_ag_service_to_idx
533 **
534 ** Description      Given a BTA service mask convert to profile index.
535 **
536 **
537 ** Returns          Profile ndex of scb.
538 **
539 *******************************************************************************/
bta_ag_service_to_idx(tBTA_SERVICE_MASK services)540 UINT8 bta_ag_service_to_idx(tBTA_SERVICE_MASK services)
541 {
542     if (services & BTA_HFP_SERVICE_MASK) {
543         return BTA_AG_HFP;
544     } else {
545         return BTA_AG_HSP;
546     }
547 }
548 
549 /*******************************************************************************
550 **
551 ** Function         bta_ag_idx_by_bdaddr
552 **
553 ** Description      Find SCB associated with peer BD address.
554 **
555 **
556 ** Returns          Index of SCB or zero if none found.
557 **
558 *******************************************************************************/
bta_ag_idx_by_bdaddr(BD_ADDR peer_addr)559 UINT16 bta_ag_idx_by_bdaddr(BD_ADDR peer_addr)
560 {
561     tBTA_AG_SCB     *p_scb = &bta_ag_cb.scb[0];
562     UINT16          i;
563 
564     if (peer_addr != NULL) {
565         for (i = 0; i < BTA_AG_NUM_SCB; i++, p_scb++) {
566             if (p_scb->in_use && !bdcmp(peer_addr, p_scb->peer_addr)) {
567                 return (i + 1);
568             }
569         }
570     }
571     /* no scb found */
572     APPL_TRACE_WARNING("No ag scb for peer addr");
573     return 0;
574 }
575 
576 /*******************************************************************************
577 **
578 ** Function         bta_ag_other_scb_open
579 **
580 ** Description      Check whether any other scb is in open state.
581 **
582 **
583 ** Returns          TRUE if another scb is in open state, FALSE otherwise.
584 **
585 *******************************************************************************/
bta_ag_other_scb_open(tBTA_AG_SCB * p_curr_scb)586 BOOLEAN bta_ag_other_scb_open(tBTA_AG_SCB *p_curr_scb)
587 {
588     tBTA_AG_SCB     *p_scb = &bta_ag_cb.scb[0];
589 
590     for (int i = 0; i < BTA_AG_NUM_SCB; i++, p_scb++) {
591         if (p_scb->in_use && p_scb != p_curr_scb && p_scb->state == BTA_AG_OPEN_ST) {
592             return TRUE;
593         }
594     }
595     /* no other scb found */
596     APPL_TRACE_DEBUG("No other ag scb open");
597     return FALSE;
598 }
599 
600 /*******************************************************************************
601 **
602 ** Function         bta_ag_scb_open
603 **
604 ** Description      Check whether given scb is in open state.
605 **
606 **
607 ** Returns          TRUE if scb is in open state, FALSE otherwise.
608 **
609 *******************************************************************************/
bta_ag_scb_open(tBTA_AG_SCB * p_curr_scb)610 BOOLEAN bta_ag_scb_open(tBTA_AG_SCB *p_curr_scb)
611 {
612     if (p_curr_scb && p_curr_scb->in_use && p_curr_scb->state == BTA_AG_OPEN_ST) {
613         return TRUE;
614     }
615     return FALSE;
616 }
617 
618 /*******************************************************************************
619 **
620 ** Function         bta_ag_get_other_idle_scb
621 **
622 ** Description      Return other scb if it is in INIT st.
623 **
624 **
625 ** Returns          Pointer to other scb if INIT st, NULL otherwise.
626 **
627 *******************************************************************************/
bta_ag_get_other_idle_scb(tBTA_AG_SCB * p_curr_scb)628 tBTA_AG_SCB *bta_ag_get_other_idle_scb (tBTA_AG_SCB *p_curr_scb)
629 {
630     tBTA_AG_SCB     *p_scb = &bta_ag_cb.scb[0];
631     UINT8   xx;
632 
633     for (xx = 0; xx < BTA_AG_NUM_SCB; xx++, p_scb++) {
634         if (p_scb->in_use && (p_scb != p_curr_scb) && (p_scb->state == BTA_AG_INIT_ST)) {
635             return p_scb;
636         }
637     }
638     /* no other scb found */
639     APPL_TRACE_DEBUG("bta_ag_get_other_idle_scb: No idle AG scb");
640     return NULL;
641 }
642 
643 /*******************************************************************************
644 **
645 ** Function         bta_ag_colli_timer_cback
646 **
647 ** Description      AG connection collision timer callback
648 **
649 **
650 ** Returns          void
651 **
652 *******************************************************************************/
bta_ag_colli_timer_cback(TIMER_LIST_ENT * p_tle)653 static void bta_ag_colli_timer_cback (TIMER_LIST_ENT *p_tle)
654 {
655     tBTA_AG_SCB *p_scb;
656 
657     APPL_TRACE_DEBUG ("bta_ag_colli_timer_cback");
658     if (p_tle) {
659         p_scb = (tBTA_AG_SCB *)p_tle->param;
660         if (p_scb) {
661             p_scb->colli_tmr_on = FALSE;
662             /* If the peer haven't opened AG connection     */
663             /* we will restart opening process.             */
664             bta_ag_resume_open (p_scb);
665         }
666     }
667 }
668 
669 /*******************************************************************************
670 **
671 ** Function         bta_ag_collision_cback
672 **
673 ** Description      Get notified about collision.
674 **
675 **
676 ** Returns          void
677 **
678 *******************************************************************************/
bta_ag_collision_cback(tBTA_SYS_CONN_STATUS status,UINT8 id,UINT8 app_id,BD_ADDR peer_addr)679 void bta_ag_collision_cback (tBTA_SYS_CONN_STATUS status, UINT8 id, UINT8 app_id, BD_ADDR peer_addr)
680 {
681     UINT16  handle;
682     tBTA_AG_SCB *p_scb;
683     UNUSED(status);
684     UNUSED(app_id);
685 
686     /* Check if we have opening scb for the peer device. */
687     handle = bta_ag_idx_by_bdaddr (peer_addr);
688     p_scb = bta_ag_scb_by_idx (handle);
689 
690     if (p_scb && (p_scb->state == BTA_AG_OPENING_ST)) {
691         if (id == BTA_ID_SYS) {
692             /* ACL collision */
693             APPL_TRACE_WARNING ("AG found collision (ACL) ...");
694         } else if (id == BTA_ID_AG) {
695             /* RFCOMM collision */
696             APPL_TRACE_WARNING ("AG found collision (RFCOMM) ...");
697         } else {
698             APPL_TRACE_WARNING ("AG found collision (\?\?\?) ...");
699         }
700         p_scb->state = BTA_AG_INIT_ST;
701         /* Cancel SDP if it had been started. */
702         if(p_scb->p_disc_db) {
703             (void)SDP_CancelServiceSearch (p_scb->p_disc_db);
704             bta_ag_free_db(p_scb, NULL);
705         }
706         /* reopen registered servers */
707         /* Collision may be detected before or after we close servers. */
708         if (bta_ag_is_server_closed (p_scb)) {
709             bta_ag_start_servers(p_scb, p_scb->reg_services);
710         }
711         /* Start timer to han */
712         p_scb->colli_timer.p_cback = (TIMER_CBACK*)&bta_ag_colli_timer_cback;
713         p_scb->colli_timer.param = (INT32)p_scb;
714         bta_sys_start_timer(&p_scb->colli_timer, 0, BTA_AG_COLLISION_TIMER);
715         p_scb->colli_tmr_on = TRUE;
716     }
717 }
718 
719 /*******************************************************************************
720 **
721 ** Function         bta_ag_resume_open
722 **
723 ** Description      Resume opening process.
724 **
725 **
726 ** Returns          void
727 **
728 *******************************************************************************/
bta_ag_resume_open(tBTA_AG_SCB * p_scb)729 void bta_ag_resume_open (tBTA_AG_SCB *p_scb)
730 {
731     if (p_scb) {
732         APPL_TRACE_DEBUG ("bta_ag_resume_open, Handle(%d)", bta_ag_scb_to_idx(p_scb));
733         /* resume opening process.  */
734         if (p_scb->state == BTA_AG_INIT_ST) {
735             p_scb->state = BTA_AG_OPENING_ST;
736             bta_ag_start_open (p_scb, NULL);
737         }
738     } else {
739         APPL_TRACE_ERROR ("bta_ag_resume_open, Null p_scb");
740     }
741 }
742 
743 /*******************************************************************************
744 **
745 ** Function         bta_ag_api_enable
746 **
747 ** Description      Handle an API enable event.
748 **
749 **
750 ** Returns          void
751 **
752 *******************************************************************************/
bta_ag_api_enable(tBTA_AG_DATA * p_data)753 static void bta_ag_api_enable(tBTA_AG_DATA *p_data)
754 {
755     /* initialize control block */
756     memset(&bta_ag_cb, 0, sizeof(tBTA_AG_CB));
757     /* store callback function */
758     bta_ag_cb.p_cback = p_data->api_enable.p_cback;
759     bta_ag_cb.parse_mode = p_data->api_enable.parse_mode;
760     /* check if mSBC support enabled */
761     if (bta_ag_version >= HFP_VERSION_1_6) {
762         bta_ag_cb.msbc_enabled = TRUE;
763         bta_ag_cb.scb->negotiated_codec = BTM_SCO_CODEC_MSBC;
764     } else{
765         bta_ag_cb.msbc_enabled = FALSE;
766         bta_ag_cb.scb->negotiated_codec = BTM_SCO_CODEC_CVSD;
767     }
768 
769     /* set deault setting for eSCO/SCO */
770     BTM_WriteVoiceSettings(AG_VOICE_SETTINGS);
771     bta_sys_collision_register (BTA_ID_AG, bta_ag_collision_cback);
772     /* call callback with enable event */
773     (*bta_ag_cb.p_cback)(BTA_AG_ENABLE_EVT, NULL);
774 }
775 
776 /*******************************************************************************
777 **
778 ** Function         bta_ag_api_disable
779 **
780 ** Description      Handle an API disable event.
781 **
782 **
783 ** Returns          void
784 **
785 *******************************************************************************/
bta_ag_api_disable(tBTA_AG_DATA * p_data)786 static void bta_ag_api_disable(tBTA_AG_DATA *p_data)
787 {
788     /* deregister all scbs in use */
789     tBTA_AG_SCB     *p_scb = &bta_ag_cb.scb[0];
790     BOOLEAN         do_dereg = FALSE;
791     int             i;
792 
793     if (!bta_sys_is_register (BTA_ID_AG)) {
794         APPL_TRACE_ERROR("BTA AG is already disabled, ignoring ...");
795         return;
796     }
797     /* De-register with BTA system manager */
798     bta_sys_deregister(BTA_ID_AG);
799 
800     for (i = 0; i < BTA_AG_NUM_SCB; i++, p_scb++) {
801         if (p_scb->in_use) {
802             bta_ag_sm_execute(p_scb, BTA_AG_API_DEREGISTER_EVT, p_data);
803             do_dereg = TRUE;
804         }
805     }
806 
807     if (!do_dereg) {
808         /* Done, send callback evt to app */
809         (*bta_ag_cb.p_cback)(BTA_AG_DISABLE_EVT, NULL);
810     }
811     bta_sys_collision_register (BTA_ID_AG, NULL);
812 }
813 
814 /*******************************************************************************
815 **
816 ** Function         bta_ag_api_register
817 **
818 ** Description      Handle an API event registers a new service.
819 **
820 **
821 ** Returns          void
822 **
823 *******************************************************************************/
bta_ag_api_register(tBTA_AG_DATA * p_data)824 static void bta_ag_api_register(tBTA_AG_DATA *p_data)
825 {
826     tBTA_AG_SCB     *p_scb;
827     tBTA_AG_REGISTER reg;
828 
829     /* allocate an scb */
830     if ((p_scb = bta_ag_scb_alloc()) != NULL) {
831         APPL_TRACE_DEBUG("bta_ag_api_register: p_scb 0x%08x ", (unsigned int)p_scb);
832         bta_ag_sm_execute(p_scb, p_data->hdr.event, p_data);
833     } else {
834         reg.hdr.status = BTA_AG_FAIL_RESOURCES;
835         (*bta_ag_cb.p_cback)(BTA_AG_REGISTER_EVT, (tBTA_AG *) &reg);
836     }
837 }
838 
839 /*******************************************************************************
840 **
841 ** Function         bta_ag_api_result
842 **
843 ** Description      Handle an API result event.
844 **
845 **
846 ** Returns          void
847 **
848 *******************************************************************************/
bta_ag_api_result(tBTA_AG_DATA * p_data)849 static void bta_ag_api_result(tBTA_AG_DATA *p_data)
850 {
851     tBTA_AG_SCB     *p_scb;
852     int i;
853 
854     if (p_data->hdr.layer_specific != BTA_AG_HANDLE_ALL) {
855         if ((p_scb = bta_ag_scb_by_idx(p_data->hdr.layer_specific)) != NULL) {
856             APPL_TRACE_DEBUG("bta_ag_api_result: p_scb 0x%08x ", (unsigned int)p_scb);
857             bta_ag_sm_execute(p_scb, BTA_AG_API_RESULT_EVT, p_data);
858         }
859     } else {
860         for (i = 0, p_scb = &bta_ag_cb.scb[0]; i < BTA_AG_NUM_SCB; i++, p_scb++) {
861             if (p_scb->in_use && p_scb->svc_conn) {
862                 APPL_TRACE_DEBUG("bta_ag_api_result p_scb 0x%08x ", (unsigned int)p_scb);
863                 bta_ag_sm_execute(p_scb, BTA_AG_API_RESULT_EVT, p_data);
864             }
865         }
866     }
867 }
868 
869 /*******************************************************************************
870 **
871 ** Function         bta_ag_sm_execute
872 **
873 ** Description      State machine event handling function for AG
874 **
875 **
876 ** Returns          void
877 **
878 *******************************************************************************/
bta_ag_sm_execute(tBTA_AG_SCB * p_scb,UINT16 event,tBTA_AG_DATA * p_data)879 void bta_ag_sm_execute(tBTA_AG_SCB *p_scb, UINT16 event, tBTA_AG_DATA *p_data)
880 {
881     tBTA_AG_ST_TBL      state_table;
882     UINT8               action;
883 
884 #if BTA_AG_DEBUG == TRUE
885     UINT16  in_event = event;
886     UINT8   in_state = p_scb->state;
887     /* Ignore displaying of AT results when not connected (Ignored in state machine) */
888     if (in_event != BTA_AG_API_RESULT_EVT || p_scb->state == BTA_AG_OPEN_ST) {
889         APPL_TRACE_EVENT("AG evt (hdl 0x%04x): State %d (%s), Event 0x%04x (%s)",
890                            bta_ag_scb_to_idx(p_scb),
891                            p_scb->state, bta_ag_state_str(p_scb->state),
892                            event, bta_ag_evt_str(event, p_data->api_result.result));
893     }
894 #else
895     APPL_TRACE_EVENT("AG evt (hdl 0x%04x): State %d, Event 0x%04x",
896                       bta_ag_scb_to_idx(p_scb), p_scb->state, event);
897 #endif
898     event &= 0x00FF;
899     if (event >= (BTA_AG_MAX_EVT & 0x00FF)) {
900         APPL_TRACE_ERROR("AG evt out of range, ignoring...");
901         return;
902     }
903     /* look up the state table for the current state */
904     state_table = bta_ag_st_tbl[p_scb->state];
905     /* set next state */
906     p_scb->state = state_table[event][BTA_AG_NEXT_STATE];
907     /* execute action functions */
908     for (int i = 0; i < BTA_AG_ACTIONS; i++) {
909         if ((action = state_table[event][i]) != BTA_AG_IGNORE) {
910             (*bta_ag_action[action])(p_scb, p_data);
911         } else {
912             break;
913         }
914     }
915 #if BTA_AG_DEBUG == TRUE
916     if (p_scb->state != in_state) {
917         APPL_TRACE_EVENT("BTA AG State Change: [%s] -> [%s] after Event [%s]",
918                       bta_ag_state_str(in_state),
919                       bta_ag_state_str(p_scb->state),
920                       bta_ag_evt_str(in_event, p_data->api_result.result));
921     }
922 #endif
923 }
924 
925 /*******************************************************************************
926 **
927 ** Function         bta_ag_hdl_event
928 **
929 ** Description      Data gateway main event handling function.
930 **
931 **
932 ** Returns          BOOLEAN
933 **
934 *******************************************************************************/
bta_ag_hdl_event(BT_HDR * p_msg)935 BOOLEAN bta_ag_hdl_event(BT_HDR *p_msg)
936 {
937     tBTA_AG_SCB *p_scb;
938     APPL_TRACE_DEBUG("bta_ag_hdl_event: Event 0x%04x ", p_msg->event);
939 
940     switch (p_msg->event) {
941         /* handle enable event */
942         case BTA_AG_API_ENABLE_EVT:
943             bta_ag_api_enable((tBTA_AG_DATA *) p_msg);
944             break;
945 
946         /* handle disable event */
947         case BTA_AG_API_DISABLE_EVT:
948             bta_ag_api_disable((tBTA_AG_DATA *) p_msg);
949             break;
950 
951         /* handle register event */
952         case BTA_AG_API_REGISTER_EVT:
953             bta_ag_api_register((tBTA_AG_DATA *) p_msg);
954             break;
955 
956         /* handle result event */
957         case BTA_AG_API_RESULT_EVT:
958             bta_ag_api_result((tBTA_AG_DATA *) p_msg);
959             break;
960 
961         /* all others reference scb by handle */
962         default:
963             if ((p_scb = bta_ag_scb_by_idx(p_msg->layer_specific)) != NULL) {
964                 APPL_TRACE_DEBUG("bta_ag_hdl_event: p_scb 0x%08x ", (unsigned int)p_scb);
965                 bta_ag_sm_execute(p_scb, p_msg->event, (tBTA_AG_DATA *) p_msg);
966             }
967             break;
968     }
969     return TRUE;
970 }
971 
972 #endif /* #if (BTA_AG_INCLUDED == TRUE) */
973