1 /******************************************************************************
2  *
3  *  Copyright (c) 2014 The Android Open Source Project
4  *  Copyright (C) 2009-2012 Broadcom Corporation
5  *
6  *  Licensed under the Apache License, Version 2.0 (the "License");
7  *  you may not use this file except in compliance with the License.
8  *  You may obtain a copy of the License at:
9  *
10  *  http://www.apache.org/licenses/LICENSE-2.0
11  *
12  *  Unless required by applicable law or agreed to in writing, software
13  *  distributed under the License is distributed on an "AS IS" BASIS,
14  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  *  See the License for the specific language governing permissions and
16  *  limitations under the License.
17  *
18  ******************************************************************************/
19 
20 /************************************************************************************
21  *
22  *  Filename:      btif_util.c
23  *
24  *  Description:   Miscellaneous helper functions
25  *
26  *
27  ***********************************************************************************/
28 
29 #define LOG_TAG "bt_btif_util"
30 
31 #include "btif_util.h"
32 
33 #include <assert.h>
34 #include <ctype.h>
35 #include <netinet/in.h>
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <string.h>
39 
40 #include <hardware/bt_av.h>
41 
42 #include "avrc_defs.h"
43 #include "bta_ag_api.h"
44 #include "bta_api.h"
45 #include "bta_av_api.h"
46 #include "bta_hf_client_api.h"
47 #include "bta_hh_api.h"
48 #include "bte.h"
49 #include "btif_common.h"
50 #include "btif_dm.h"
51 #include "btu.h"
52 #include "bt_common.h"
53 
54 /************************************************************************************
55 **  Constants & Macros
56 ************************************************************************************/
57 #define ISDIGIT(a)  ((a>='0') && (a<='9'))
58 #define ISXDIGIT(a) (((a>='0') && (a<='9'))||((a>='A') && (a<='F'))||((a>='a') && (a<='f')))
59 
60 /************************************************************************************
61 **  Local type definitions
62 ************************************************************************************/
63 
64 /************************************************************************************
65 **  Static variables
66 ************************************************************************************/
67 
68 /************************************************************************************
69 **  Static functions
70 ************************************************************************************/
71 
72 /************************************************************************************
73 **  Externs
74 ************************************************************************************/
75 
76 /************************************************************************************
77 **  Functions
78 ************************************************************************************/
79 
80 /*****************************************************************************
81 **   Logging helper functions
82 *****************************************************************************/
83 
devclass2uint(DEV_CLASS dev_class)84 UINT32 devclass2uint(DEV_CLASS dev_class)
85 {
86     UINT32 cod = 0;
87 
88     if(dev_class != NULL)
89     {
90         /* if COD is 0, irrespective of the device type set it to Unclassified device */
91         cod = (dev_class[2]) | (dev_class[1] << 8) | (dev_class[0] << 16);
92     }
93     return cod;
94 }
uint2devclass(UINT32 cod,DEV_CLASS dev_class)95 void uint2devclass(UINT32 cod, DEV_CLASS dev_class)
96 {
97     dev_class[2] = (UINT8)cod;
98     dev_class[1] = (UINT8)(cod >> 8);
99     dev_class[0] = (UINT8)(cod >> 16);
100 }
101 
102 static const UINT8  sdp_base_uuid[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00,
103                                        0x80, 0x00, 0x00, 0x80, 0x5F, 0x9B, 0x34, 0xFB};
104 
uuid16_to_uuid128(uint16_t uuid16,bt_uuid_t * uuid128)105 void uuid16_to_uuid128(uint16_t uuid16, bt_uuid_t* uuid128)
106 {
107     uint16_t uuid16_bo;
108     memset(uuid128, 0, sizeof(bt_uuid_t));
109 
110     memcpy(uuid128->uu, sdp_base_uuid, MAX_UUID_SIZE);
111     uuid16_bo = ntohs(uuid16);
112     memcpy(uuid128->uu + 2, &uuid16_bo, sizeof(uint16_t));
113 }
114 
string_to_uuid(const char * str,bt_uuid_t * p_uuid)115 bool string_to_uuid(const char *str, bt_uuid_t *p_uuid)
116 {
117     assert(p_uuid);
118     if (str == NULL)
119         return false;
120 
121     uint32_t uuid0, uuid4;
122     uint16_t uuid1, uuid2, uuid3, uuid5;
123 
124     int rc = sscanf(str, "%08x-%04hx-%04hx-%04hx-%08x%04hx",
125                 &uuid0, &uuid1, &uuid2, &uuid3, &uuid4, &uuid5);
126     if (rc != 6)
127         return false;
128 
129     uuid0 = htonl(uuid0);
130     uuid1 = htons(uuid1);
131     uuid2 = htons(uuid2);
132     uuid3 = htons(uuid3);
133     uuid4 = htonl(uuid4);
134     uuid5 = htons(uuid5);
135 
136     memcpy(&(p_uuid->uu[0]), &uuid0, 4);
137     memcpy(&(p_uuid->uu[4]), &uuid1, 2);
138     memcpy(&(p_uuid->uu[6]), &uuid2, 2);
139     memcpy(&(p_uuid->uu[8]), &uuid3, 2);
140     memcpy(&(p_uuid->uu[10]), &uuid4, 4);
141     memcpy(&(p_uuid->uu[14]), &uuid5, 2);
142 
143     return true;
144 }
145 
uuid_to_string_legacy(bt_uuid_t * p_uuid,char * str)146 void uuid_to_string_legacy(bt_uuid_t *p_uuid, char *str)
147 {
148     uint32_t uuid0, uuid4;
149     uint16_t uuid1, uuid2, uuid3, uuid5;
150 
151     memcpy(&uuid0, &(p_uuid->uu[0]), 4);
152     memcpy(&uuid1, &(p_uuid->uu[4]), 2);
153     memcpy(&uuid2, &(p_uuid->uu[6]), 2);
154     memcpy(&uuid3, &(p_uuid->uu[8]), 2);
155     memcpy(&uuid4, &(p_uuid->uu[10]), 4);
156     memcpy(&uuid5, &(p_uuid->uu[14]), 2);
157 
158     sprintf((char *)str, "%.8x-%.4x-%.4x-%.4x-%.8x%.4x",
159             ntohl(uuid0), ntohs(uuid1),
160             ntohs(uuid2), ntohs(uuid3),
161             ntohl(uuid4), ntohs(uuid5));
162     return;
163 }
164 
165 /*****************************************************************************
166 **  Function        ascii_2_hex
167 **
168 **  Description     This function converts an ASCII string into HEX
169 **
170 **  Returns         the number of hex bytes filled.
171 */
ascii_2_hex(const char * p_ascii,int len,UINT8 * p_hex)172 int ascii_2_hex (const char *p_ascii, int len, UINT8 *p_hex)
173 {
174     int     x;
175     UINT8   c;
176 
177     for (x = 0; (x < len) && (*p_ascii); x++)
178     {
179         if (ISDIGIT (*p_ascii))
180             c = (*p_ascii - '0') << 4;
181         else
182             c = (toupper(*p_ascii) - 'A' + 10) << 4;
183 
184         p_ascii++;
185         if (*p_ascii)
186         {
187             if (ISDIGIT (*p_ascii))
188                 c |= (*p_ascii - '0');
189             else
190                 c |= (toupper(*p_ascii) - 'A' + 10);
191 
192             p_ascii++;
193         }
194         *p_hex++ = c;
195     }
196 
197     return (x);
198 }
199 
dump_dm_search_event(UINT16 event)200 const char* dump_dm_search_event(UINT16 event)
201 {
202     switch(event)
203     {
204         CASE_RETURN_STR(BTA_DM_INQ_RES_EVT)
205         CASE_RETURN_STR(BTA_DM_INQ_CMPL_EVT)
206         CASE_RETURN_STR(BTA_DM_DISC_RES_EVT)
207         CASE_RETURN_STR(BTA_DM_DISC_BLE_RES_EVT)
208         CASE_RETURN_STR(BTA_DM_DISC_CMPL_EVT)
209         CASE_RETURN_STR(BTA_DM_DI_DISC_CMPL_EVT)
210         CASE_RETURN_STR(BTA_DM_SEARCH_CANCEL_CMPL_EVT)
211 
212         default:
213             return "UNKNOWN MSG ID";
214      }
215 }
216 
dump_property_type(bt_property_type_t type)217 const char* dump_property_type(bt_property_type_t type)
218 {
219     switch(type)
220     {
221         CASE_RETURN_STR(BT_PROPERTY_BDNAME)
222         CASE_RETURN_STR(BT_PROPERTY_BDADDR)
223         CASE_RETURN_STR(BT_PROPERTY_UUIDS)
224         CASE_RETURN_STR(BT_PROPERTY_CLASS_OF_DEVICE)
225         CASE_RETURN_STR(BT_PROPERTY_TYPE_OF_DEVICE)
226         CASE_RETURN_STR(BT_PROPERTY_REMOTE_RSSI)
227         CASE_RETURN_STR(BT_PROPERTY_ADAPTER_DISCOVERY_TIMEOUT)
228         CASE_RETURN_STR(BT_PROPERTY_ADAPTER_BONDED_DEVICES)
229         CASE_RETURN_STR(BT_PROPERTY_ADAPTER_SCAN_MODE)
230         CASE_RETURN_STR(BT_PROPERTY_REMOTE_FRIENDLY_NAME)
231 
232         default:
233             return "UNKNOWN PROPERTY ID";
234     }
235 }
236 
dump_dm_event(UINT16 event)237 const char* dump_dm_event(UINT16 event)
238 {
239     switch(event)
240     {
241         CASE_RETURN_STR(BTA_DM_ENABLE_EVT)
242         CASE_RETURN_STR(BTA_DM_DISABLE_EVT)
243         CASE_RETURN_STR(BTA_DM_PIN_REQ_EVT)
244         CASE_RETURN_STR(BTA_DM_AUTH_CMPL_EVT)
245         CASE_RETURN_STR(BTA_DM_AUTHORIZE_EVT)
246         CASE_RETURN_STR(BTA_DM_LINK_UP_EVT)
247         CASE_RETURN_STR(BTA_DM_LINK_DOWN_EVT)
248         CASE_RETURN_STR(BTA_DM_SIG_STRENGTH_EVT)
249         CASE_RETURN_STR(BTA_DM_BUSY_LEVEL_EVT)
250         CASE_RETURN_STR(BTA_DM_BOND_CANCEL_CMPL_EVT)
251         CASE_RETURN_STR(BTA_DM_SP_CFM_REQ_EVT)
252         CASE_RETURN_STR(BTA_DM_SP_KEY_NOTIF_EVT)
253         CASE_RETURN_STR(BTA_DM_SP_RMT_OOB_EVT)
254         CASE_RETURN_STR(BTA_DM_SP_KEYPRESS_EVT)
255         CASE_RETURN_STR(BTA_DM_ROLE_CHG_EVT)
256         CASE_RETURN_STR(BTA_DM_BLE_KEY_EVT)
257         CASE_RETURN_STR(BTA_DM_BLE_SEC_REQ_EVT)
258         CASE_RETURN_STR(BTA_DM_BLE_PASSKEY_NOTIF_EVT)
259         CASE_RETURN_STR(BTA_DM_BLE_PASSKEY_REQ_EVT)
260         CASE_RETURN_STR(BTA_DM_BLE_OOB_REQ_EVT)
261         CASE_RETURN_STR(BTA_DM_BLE_LOCAL_IR_EVT)
262         CASE_RETURN_STR(BTA_DM_BLE_LOCAL_ER_EVT)
263         CASE_RETURN_STR(BTA_DM_BLE_AUTH_CMPL_EVT)
264         CASE_RETURN_STR(BTA_DM_DEV_UNPAIRED_EVT)
265         CASE_RETURN_STR(BTA_DM_HW_ERROR_EVT)
266         CASE_RETURN_STR(BTA_DM_ENER_INFO_READ)
267 
268         default:
269             return "UNKNOWN DM EVENT";
270     }
271 }
272 
dump_hf_event(UINT16 event)273 const char* dump_hf_event(UINT16 event)
274 {
275     switch(event)
276     {
277         CASE_RETURN_STR(BTA_AG_ENABLE_EVT)
278         CASE_RETURN_STR(BTA_AG_REGISTER_EVT)
279         CASE_RETURN_STR(BTA_AG_OPEN_EVT)
280         CASE_RETURN_STR(BTA_AG_CLOSE_EVT)
281         CASE_RETURN_STR(BTA_AG_CONN_EVT)
282         CASE_RETURN_STR(BTA_AG_AUDIO_OPEN_EVT)
283         CASE_RETURN_STR(BTA_AG_AUDIO_CLOSE_EVT)
284         CASE_RETURN_STR(BTA_AG_SPK_EVT)
285         CASE_RETURN_STR(BTA_AG_MIC_EVT)
286         CASE_RETURN_STR(BTA_AG_AT_CKPD_EVT)
287         CASE_RETURN_STR(BTA_AG_DISABLE_EVT)
288 #if (BTM_WBS_INCLUDED == TRUE )
289         CASE_RETURN_STR(BTA_AG_WBS_EVT)
290 #endif
291         CASE_RETURN_STR(BTA_AG_AT_A_EVT)
292         CASE_RETURN_STR(BTA_AG_AT_D_EVT)
293         CASE_RETURN_STR(BTA_AG_AT_CHLD_EVT)
294         CASE_RETURN_STR(BTA_AG_AT_CHUP_EVT)
295         CASE_RETURN_STR(BTA_AG_AT_CIND_EVT)
296         CASE_RETURN_STR(BTA_AG_AT_VTS_EVT)
297         CASE_RETURN_STR(BTA_AG_AT_BINP_EVT)
298         CASE_RETURN_STR(BTA_AG_AT_BLDN_EVT)
299         CASE_RETURN_STR(BTA_AG_AT_BVRA_EVT)
300         CASE_RETURN_STR(BTA_AG_AT_NREC_EVT)
301         CASE_RETURN_STR(BTA_AG_AT_CNUM_EVT)
302         CASE_RETURN_STR(BTA_AG_AT_BTRH_EVT)
303         CASE_RETURN_STR(BTA_AG_AT_CLCC_EVT)
304         CASE_RETURN_STR(BTA_AG_AT_COPS_EVT)
305         CASE_RETURN_STR(BTA_AG_AT_UNAT_EVT)
306         CASE_RETURN_STR(BTA_AG_AT_CBC_EVT)
307         CASE_RETURN_STR(BTA_AG_AT_BAC_EVT)
308         CASE_RETURN_STR(BTA_AG_AT_BCS_EVT)
309 
310         default:
311             return "UNKNOWN MSG ID";
312      }
313 }
314 
dump_hf_client_event(UINT16 event)315 const char* dump_hf_client_event(UINT16 event)
316 {
317     switch(event)
318     {
319         CASE_RETURN_STR(BTA_HF_CLIENT_ENABLE_EVT)
320         CASE_RETURN_STR(BTA_HF_CLIENT_REGISTER_EVT)
321         CASE_RETURN_STR(BTA_HF_CLIENT_OPEN_EVT)
322         CASE_RETURN_STR(BTA_HF_CLIENT_CLOSE_EVT)
323         CASE_RETURN_STR(BTA_HF_CLIENT_CONN_EVT)
324         CASE_RETURN_STR(BTA_HF_CLIENT_AUDIO_OPEN_EVT)
325         CASE_RETURN_STR(BTA_HF_CLIENT_AUDIO_MSBC_OPEN_EVT)
326         CASE_RETURN_STR(BTA_HF_CLIENT_AUDIO_CLOSE_EVT)
327         CASE_RETURN_STR(BTA_HF_CLIENT_SPK_EVT)
328         CASE_RETURN_STR(BTA_HF_CLIENT_MIC_EVT)
329         CASE_RETURN_STR(BTA_HF_CLIENT_DISABLE_EVT)
330         CASE_RETURN_STR(BTA_HF_CLIENT_IND_EVT)
331         CASE_RETURN_STR(BTA_HF_CLIENT_VOICE_REC_EVT)
332         CASE_RETURN_STR(BTA_HF_CLIENT_OPERATOR_NAME_EVT)
333         CASE_RETURN_STR(BTA_HF_CLIENT_CLIP_EVT)
334         CASE_RETURN_STR(BTA_HF_CLIENT_CCWA_EVT)
335         CASE_RETURN_STR(BTA_HF_CLIENT_AT_RESULT_EVT)
336         CASE_RETURN_STR(BTA_HF_CLIENT_CLCC_EVT)
337         CASE_RETURN_STR(BTA_HF_CLIENT_CNUM_EVT)
338         CASE_RETURN_STR(BTA_HF_CLIENT_BTRH_EVT)
339         CASE_RETURN_STR(BTA_HF_CLIENT_BSIR_EVT)
340         CASE_RETURN_STR(BTA_HF_CLIENT_BINP_EVT)
341         CASE_RETURN_STR(BTA_HF_CLIENT_RING_INDICATION)
342         default:
343             return "UNKNOWN MSG ID";
344      }
345 }
346 
dump_hh_event(UINT16 event)347 const char* dump_hh_event(UINT16 event)
348 {
349     switch(event)
350     {
351         CASE_RETURN_STR(BTA_HH_ENABLE_EVT)
352         CASE_RETURN_STR(BTA_HH_DISABLE_EVT)
353         CASE_RETURN_STR(BTA_HH_OPEN_EVT)
354         CASE_RETURN_STR(BTA_HH_CLOSE_EVT)
355         CASE_RETURN_STR(BTA_HH_GET_DSCP_EVT)
356         CASE_RETURN_STR(BTA_HH_GET_PROTO_EVT)
357         CASE_RETURN_STR(BTA_HH_GET_RPT_EVT)
358         CASE_RETURN_STR(BTA_HH_GET_IDLE_EVT)
359         CASE_RETURN_STR(BTA_HH_SET_PROTO_EVT)
360         CASE_RETURN_STR(BTA_HH_SET_RPT_EVT)
361         CASE_RETURN_STR(BTA_HH_SET_IDLE_EVT)
362         CASE_RETURN_STR(BTA_HH_VC_UNPLUG_EVT)
363         CASE_RETURN_STR(BTA_HH_ADD_DEV_EVT)
364         CASE_RETURN_STR(BTA_HH_RMV_DEV_EVT)
365         CASE_RETURN_STR(BTA_HH_API_ERR_EVT)
366         default:
367             return "UNKNOWN MSG ID";
368      }
369 }
370 
dump_hf_conn_state(UINT16 event)371 const char* dump_hf_conn_state(UINT16 event)
372 {
373     switch(event)
374     {
375         CASE_RETURN_STR(BTHF_CONNECTION_STATE_DISCONNECTED)
376         CASE_RETURN_STR(BTHF_CONNECTION_STATE_CONNECTING)
377         CASE_RETURN_STR(BTHF_CONNECTION_STATE_CONNECTED)
378         CASE_RETURN_STR(BTHF_CONNECTION_STATE_SLC_CONNECTED)
379         CASE_RETURN_STR(BTHF_CONNECTION_STATE_DISCONNECTING)
380         default:
381             return "UNKNOWN MSG ID";
382     }
383 }
384 
dump_hf_call_state(bthf_call_state_t call_state)385 const char* dump_hf_call_state(bthf_call_state_t call_state)
386 {
387     switch(call_state)
388     {
389         CASE_RETURN_STR(BTHF_CALL_STATE_IDLE)
390         CASE_RETURN_STR(BTHF_CALL_STATE_HELD)
391         CASE_RETURN_STR(BTHF_CALL_STATE_DIALING)
392         CASE_RETURN_STR(BTHF_CALL_STATE_ALERTING)
393         CASE_RETURN_STR(BTHF_CALL_STATE_INCOMING)
394         CASE_RETURN_STR(BTHF_CALL_STATE_WAITING)
395         CASE_RETURN_STR(BTHF_CALL_STATE_ACTIVE)
396         default:
397             return "UNKNOWN CALL STATE";
398     }
399 }
400 
dump_thread_evt(bt_cb_thread_evt evt)401 const char* dump_thread_evt(bt_cb_thread_evt evt)
402 {
403     switch(evt)
404     {
405         CASE_RETURN_STR(ASSOCIATE_JVM)
406         CASE_RETURN_STR(DISASSOCIATE_JVM)
407 
408         default:
409             return "unknown thread evt";
410     }
411 }
412 
dump_hf_audio_state(UINT16 event)413 const char* dump_hf_audio_state(UINT16 event)
414 {
415     switch(event)
416     {
417         CASE_RETURN_STR(BTHF_AUDIO_STATE_DISCONNECTED)
418         CASE_RETURN_STR(BTHF_AUDIO_STATE_CONNECTING)
419         CASE_RETURN_STR(BTHF_AUDIO_STATE_CONNECTED)
420         CASE_RETURN_STR(BTHF_AUDIO_STATE_DISCONNECTING)
421         default:
422            return "UNKNOWN MSG ID";
423 
424     }
425 }
426 
dump_av_conn_state(UINT16 event)427 const char* dump_av_conn_state(UINT16 event)
428 {
429     switch(event)
430     {
431         CASE_RETURN_STR(BTAV_CONNECTION_STATE_DISCONNECTED)
432         CASE_RETURN_STR(BTAV_CONNECTION_STATE_CONNECTING)
433         CASE_RETURN_STR(BTAV_CONNECTION_STATE_CONNECTED)
434         CASE_RETURN_STR(BTAV_CONNECTION_STATE_DISCONNECTING)
435         default:
436             return "UNKNOWN MSG ID";
437     }
438 }
439 
dump_av_audio_state(UINT16 event)440 const char* dump_av_audio_state(UINT16 event)
441 {
442     switch(event)
443     {
444         CASE_RETURN_STR(BTAV_AUDIO_STATE_REMOTE_SUSPEND)
445         CASE_RETURN_STR(BTAV_AUDIO_STATE_STOPPED)
446         CASE_RETURN_STR(BTAV_AUDIO_STATE_STARTED)
447         default:
448             return "UNKNOWN MSG ID";
449     }
450 }
451 
dump_adapter_scan_mode(bt_scan_mode_t mode)452 const char* dump_adapter_scan_mode(bt_scan_mode_t mode)
453 {
454     switch(mode)
455     {
456         CASE_RETURN_STR(BT_SCAN_MODE_NONE)
457         CASE_RETURN_STR(BT_SCAN_MODE_CONNECTABLE)
458         CASE_RETURN_STR(BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE)
459 
460         default:
461             return "unknown scan mode";
462     }
463 }
464 
dump_bt_status(bt_status_t status)465 const char* dump_bt_status(bt_status_t status)
466 {
467     switch(status)
468     {
469         CASE_RETURN_STR(BT_STATUS_SUCCESS)
470         CASE_RETURN_STR(BT_STATUS_FAIL)
471         CASE_RETURN_STR(BT_STATUS_NOT_READY)
472         CASE_RETURN_STR(BT_STATUS_NOMEM)
473         CASE_RETURN_STR(BT_STATUS_BUSY)
474         CASE_RETURN_STR(BT_STATUS_UNSUPPORTED)
475 
476         default:
477             return "unknown scan mode";
478     }
479 }
480 
dump_rc_event(UINT8 event)481 const char *dump_rc_event(UINT8 event)
482 {
483    switch(event) {
484         CASE_RETURN_STR(BTA_AV_RC_OPEN_EVT)
485         CASE_RETURN_STR(BTA_AV_RC_CLOSE_EVT)
486         CASE_RETURN_STR(BTA_AV_REMOTE_CMD_EVT)
487         CASE_RETURN_STR(BTA_AV_REMOTE_RSP_EVT)
488         CASE_RETURN_STR(BTA_AV_VENDOR_CMD_EVT)
489         CASE_RETURN_STR(BTA_AV_VENDOR_RSP_EVT)
490         CASE_RETURN_STR(BTA_AV_META_MSG_EVT)
491         CASE_RETURN_STR(BTA_AV_RC_FEAT_EVT)
492         default:
493             return "UNKNOWN_EVENT";
494    }
495 }
496 
dump_rc_notification_event_id(UINT8 event_id)497 const char * dump_rc_notification_event_id(UINT8 event_id)
498 {
499     switch(event_id)
500     {
501         CASE_RETURN_STR(AVRC_EVT_PLAY_STATUS_CHANGE)
502         CASE_RETURN_STR(AVRC_EVT_TRACK_CHANGE)
503         CASE_RETURN_STR(AVRC_EVT_TRACK_REACHED_END)
504         CASE_RETURN_STR(AVRC_EVT_TRACK_REACHED_START)
505         CASE_RETURN_STR(AVRC_EVT_PLAY_POS_CHANGED)
506         CASE_RETURN_STR(AVRC_EVT_BATTERY_STATUS_CHANGE)
507         CASE_RETURN_STR(AVRC_EVT_SYSTEM_STATUS_CHANGE)
508         CASE_RETURN_STR(AVRC_EVT_APP_SETTING_CHANGE)
509         CASE_RETURN_STR(AVRC_EVT_VOLUME_CHANGE)
510 
511         default:
512             return "Unhandled Event ID";
513     }
514 }
515 
dump_rc_pdu(UINT8 pdu)516 const char*  dump_rc_pdu(UINT8 pdu)
517 {
518     switch(pdu)
519     {
520         CASE_RETURN_STR(AVRC_PDU_LIST_PLAYER_APP_ATTR)
521         CASE_RETURN_STR(AVRC_PDU_LIST_PLAYER_APP_VALUES)
522         CASE_RETURN_STR(AVRC_PDU_GET_CUR_PLAYER_APP_VALUE)
523         CASE_RETURN_STR(AVRC_PDU_SET_PLAYER_APP_VALUE)
524         CASE_RETURN_STR(AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT)
525         CASE_RETURN_STR(AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT)
526         CASE_RETURN_STR(AVRC_PDU_INFORM_DISPLAY_CHARSET)
527         CASE_RETURN_STR(AVRC_PDU_INFORM_BATTERY_STAT_OF_CT)
528         CASE_RETURN_STR(AVRC_PDU_GET_ELEMENT_ATTR)
529         CASE_RETURN_STR(AVRC_PDU_GET_PLAY_STATUS)
530         CASE_RETURN_STR(AVRC_PDU_REGISTER_NOTIFICATION)
531         CASE_RETURN_STR(AVRC_PDU_REQUEST_CONTINUATION_RSP)
532         CASE_RETURN_STR(AVRC_PDU_ABORT_CONTINUATION_RSP)
533         CASE_RETURN_STR(AVRC_PDU_SET_ABSOLUTE_VOLUME)
534         CASE_RETURN_STR(AVRC_PDU_SET_ADDRESSED_PLAYER)
535         CASE_RETURN_STR(AVRC_PDU_CHANGE_PATH)
536         CASE_RETURN_STR(AVRC_PDU_GET_CAPABILITIES)
537         default:
538             return "Unknown PDU";
539     }
540 }
541