1/******************************************************************************
2 *
3 *  Copyright (c) 2014 The Android Open Source Project
4 *  Copyright (C) 2009-2016 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 <base/logging.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 "bt_common.h"
44#include "bta_ag_api.h"
45#include "bta_api.h"
46#include "bta_av_api.h"
47#include "bta_hd_api.h"
48#include "bta_hf_client_api.h"
49#include "bta_hh_api.h"
50#include "bte.h"
51#include "btif_common.h"
52#include "btif_dm.h"
53#include "btu.h"
54
55/*******************************************************************************
56 *  Constants & Macros
57 ******************************************************************************/
58#define ISDIGIT(a) (((a) >= '0') && ((a) <= '9'))
59#define ISXDIGIT(a)                                                    \
60  ((((a) >= '0') && ((a) <= '9')) || (((a) >= 'A') && ((a) <= 'F')) || \
61   (((a) >= 'a') && ((a) <= 'f')))
62
63/*******************************************************************************
64 *  Local type definitions
65 ******************************************************************************/
66
67/*******************************************************************************
68 *  Static variables
69 ******************************************************************************/
70
71/*******************************************************************************
72 *  Static functions
73 ******************************************************************************/
74
75/*******************************************************************************
76 *  Externs
77 ******************************************************************************/
78
79/*******************************************************************************
80 *  Functions
81 ******************************************************************************/
82
83/*****************************************************************************
84 *   Logging helper functions
85 ****************************************************************************/
86
87uint32_t devclass2uint(DEV_CLASS dev_class) {
88  uint32_t cod = 0;
89
90  if (dev_class != NULL) {
91    /* if COD is 0, irrespective of the device type set it to Unclassified
92     * device */
93    cod = (dev_class[2]) | (dev_class[1] << 8) | (dev_class[0] << 16);
94  }
95  return cod;
96}
97void uint2devclass(uint32_t cod, DEV_CLASS dev_class) {
98  dev_class[2] = (uint8_t)cod;
99  dev_class[1] = (uint8_t)(cod >> 8);
100  dev_class[0] = (uint8_t)(cod >> 16);
101}
102
103static const uint8_t sdp_base_uuid[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
104                                        0x10, 0x00, 0x80, 0x00, 0x00, 0x80,
105                                        0x5F, 0x9B, 0x34, 0xFB};
106
107void uuid16_to_uuid128(uint16_t uuid16, bt_uuid_t* uuid128) {
108  uint16_t uuid16_bo;
109  memset(uuid128, 0, sizeof(bt_uuid_t));
110
111  memcpy(uuid128->uu, sdp_base_uuid, MAX_UUID_SIZE);
112  uuid16_bo = ntohs(uuid16);
113  memcpy(uuid128->uu + 2, &uuid16_bo, sizeof(uint16_t));
114}
115
116bool string_to_uuid(const char* str, bt_uuid_t* p_uuid) {
117  CHECK(p_uuid);
118  if (str == NULL) return false;
119
120  uint32_t uuid0, uuid4;
121  uint16_t uuid1, uuid2, uuid3, uuid5;
122
123  int rc = sscanf(str, "%08x-%04hx-%04hx-%04hx-%08x%04hx", &uuid0, &uuid1,
124                  &uuid2, &uuid3, &uuid4, &uuid5);
125  if (rc != 6) return false;
126
127  uuid0 = htonl(uuid0);
128  uuid1 = htons(uuid1);
129  uuid2 = htons(uuid2);
130  uuid3 = htons(uuid3);
131  uuid4 = htonl(uuid4);
132  uuid5 = htons(uuid5);
133
134  memcpy(&(p_uuid->uu[0]), &uuid0, 4);
135  memcpy(&(p_uuid->uu[4]), &uuid1, 2);
136  memcpy(&(p_uuid->uu[6]), &uuid2, 2);
137  memcpy(&(p_uuid->uu[8]), &uuid3, 2);
138  memcpy(&(p_uuid->uu[10]), &uuid4, 4);
139  memcpy(&(p_uuid->uu[14]), &uuid5, 2);
140
141  return true;
142}
143
144void uuid_to_string_legacy(bt_uuid_t* p_uuid, char* str, size_t str_len) {
145  uint32_t uuid0, uuid4;
146  uint16_t uuid1, uuid2, uuid3, uuid5;
147
148  memcpy(&uuid0, &(p_uuid->uu[0]), 4);
149  memcpy(&uuid1, &(p_uuid->uu[4]), 2);
150  memcpy(&uuid2, &(p_uuid->uu[6]), 2);
151  memcpy(&uuid3, &(p_uuid->uu[8]), 2);
152  memcpy(&uuid4, &(p_uuid->uu[10]), 4);
153  memcpy(&uuid5, &(p_uuid->uu[14]), 2);
154
155  snprintf(str, str_len, "%.8x-%.4x-%.4x-%.4x-%.8x%.4x", ntohl(uuid0),
156           ntohs(uuid1), ntohs(uuid2), ntohs(uuid3), ntohl(uuid4),
157           ntohs(uuid5));
158  return;
159}
160
161/*****************************************************************************
162 *  Function        ascii_2_hex
163 *
164 *  Description     This function converts an ASCII string into HEX
165 *
166 *  Returns         the number of hex bytes filled.
167*/
168int ascii_2_hex(const char* p_ascii, int len, uint8_t* p_hex) {
169  int x;
170  uint8_t c;
171
172  for (x = 0; (x < len) && (*p_ascii); x++) {
173    if (ISDIGIT(*p_ascii))
174      c = (*p_ascii - '0') << 4;
175    else
176      c = (toupper(*p_ascii) - 'A' + 10) << 4;
177
178    p_ascii++;
179    if (*p_ascii) {
180      if (ISDIGIT(*p_ascii))
181        c |= (*p_ascii - '0');
182      else
183        c |= (toupper(*p_ascii) - 'A' + 10);
184
185      p_ascii++;
186    }
187    *p_hex++ = c;
188  }
189
190  return (x);
191}
192
193const char* dump_dm_search_event(uint16_t event) {
194  switch (event) {
195    CASE_RETURN_STR(BTA_DM_INQ_RES_EVT)
196    CASE_RETURN_STR(BTA_DM_INQ_CMPL_EVT)
197    CASE_RETURN_STR(BTA_DM_DISC_RES_EVT)
198    CASE_RETURN_STR(BTA_DM_DISC_BLE_RES_EVT)
199    CASE_RETURN_STR(BTA_DM_DISC_CMPL_EVT)
200    CASE_RETURN_STR(BTA_DM_DI_DISC_CMPL_EVT)
201    CASE_RETURN_STR(BTA_DM_SEARCH_CANCEL_CMPL_EVT)
202
203    default:
204      return "UNKNOWN MSG ID";
205  }
206}
207
208const char* dump_property_type(bt_property_type_t type) {
209  switch (type) {
210    CASE_RETURN_STR(BT_PROPERTY_BDNAME)
211    CASE_RETURN_STR(BT_PROPERTY_BDADDR)
212    CASE_RETURN_STR(BT_PROPERTY_UUIDS)
213    CASE_RETURN_STR(BT_PROPERTY_CLASS_OF_DEVICE)
214    CASE_RETURN_STR(BT_PROPERTY_TYPE_OF_DEVICE)
215    CASE_RETURN_STR(BT_PROPERTY_REMOTE_RSSI)
216    CASE_RETURN_STR(BT_PROPERTY_ADAPTER_DISCOVERY_TIMEOUT)
217    CASE_RETURN_STR(BT_PROPERTY_ADAPTER_BONDED_DEVICES)
218    CASE_RETURN_STR(BT_PROPERTY_ADAPTER_SCAN_MODE)
219    CASE_RETURN_STR(BT_PROPERTY_REMOTE_FRIENDLY_NAME)
220
221    default:
222      return "UNKNOWN PROPERTY ID";
223  }
224}
225
226const char* dump_dm_event(uint16_t event) {
227  switch (event) {
228    CASE_RETURN_STR(BTA_DM_ENABLE_EVT)
229    CASE_RETURN_STR(BTA_DM_DISABLE_EVT)
230    CASE_RETURN_STR(BTA_DM_PIN_REQ_EVT)
231    CASE_RETURN_STR(BTA_DM_AUTH_CMPL_EVT)
232    CASE_RETURN_STR(BTA_DM_AUTHORIZE_EVT)
233    CASE_RETURN_STR(BTA_DM_LINK_UP_EVT)
234    CASE_RETURN_STR(BTA_DM_LINK_DOWN_EVT)
235    CASE_RETURN_STR(BTA_DM_SIG_STRENGTH_EVT)
236    CASE_RETURN_STR(BTA_DM_BUSY_LEVEL_EVT)
237    CASE_RETURN_STR(BTA_DM_BOND_CANCEL_CMPL_EVT)
238    CASE_RETURN_STR(BTA_DM_SP_CFM_REQ_EVT)
239    CASE_RETURN_STR(BTA_DM_SP_KEY_NOTIF_EVT)
240    CASE_RETURN_STR(BTA_DM_SP_RMT_OOB_EVT)
241    CASE_RETURN_STR(BTA_DM_SP_KEYPRESS_EVT)
242    CASE_RETURN_STR(BTA_DM_ROLE_CHG_EVT)
243    CASE_RETURN_STR(BTA_DM_BLE_KEY_EVT)
244    CASE_RETURN_STR(BTA_DM_BLE_SEC_REQ_EVT)
245    CASE_RETURN_STR(BTA_DM_BLE_PASSKEY_NOTIF_EVT)
246    CASE_RETURN_STR(BTA_DM_BLE_PASSKEY_REQ_EVT)
247    CASE_RETURN_STR(BTA_DM_BLE_OOB_REQ_EVT)
248    CASE_RETURN_STR(BTA_DM_BLE_LOCAL_IR_EVT)
249    CASE_RETURN_STR(BTA_DM_BLE_LOCAL_ER_EVT)
250    CASE_RETURN_STR(BTA_DM_BLE_AUTH_CMPL_EVT)
251    CASE_RETURN_STR(BTA_DM_DEV_UNPAIRED_EVT)
252    CASE_RETURN_STR(BTA_DM_HW_ERROR_EVT)
253    CASE_RETURN_STR(BTA_DM_ENER_INFO_READ)
254
255    default:
256      return "UNKNOWN DM EVENT";
257  }
258}
259
260const char* dump_hf_event(uint16_t event) {
261  switch (event) {
262    CASE_RETURN_STR(BTA_AG_ENABLE_EVT)
263    CASE_RETURN_STR(BTA_AG_REGISTER_EVT)
264    CASE_RETURN_STR(BTA_AG_OPEN_EVT)
265    CASE_RETURN_STR(BTA_AG_CLOSE_EVT)
266    CASE_RETURN_STR(BTA_AG_CONN_EVT)
267    CASE_RETURN_STR(BTA_AG_AUDIO_OPEN_EVT)
268    CASE_RETURN_STR(BTA_AG_AUDIO_CLOSE_EVT)
269    CASE_RETURN_STR(BTA_AG_SPK_EVT)
270    CASE_RETURN_STR(BTA_AG_MIC_EVT)
271    CASE_RETURN_STR(BTA_AG_AT_CKPD_EVT)
272    CASE_RETURN_STR(BTA_AG_DISABLE_EVT)
273    CASE_RETURN_STR(BTA_AG_WBS_EVT)
274    CASE_RETURN_STR(BTA_AG_AT_A_EVT)
275    CASE_RETURN_STR(BTA_AG_AT_D_EVT)
276    CASE_RETURN_STR(BTA_AG_AT_CHLD_EVT)
277    CASE_RETURN_STR(BTA_AG_AT_CHUP_EVT)
278    CASE_RETURN_STR(BTA_AG_AT_CIND_EVT)
279    CASE_RETURN_STR(BTA_AG_AT_VTS_EVT)
280    CASE_RETURN_STR(BTA_AG_AT_BINP_EVT)
281    CASE_RETURN_STR(BTA_AG_AT_BLDN_EVT)
282    CASE_RETURN_STR(BTA_AG_AT_BVRA_EVT)
283    CASE_RETURN_STR(BTA_AG_AT_NREC_EVT)
284    CASE_RETURN_STR(BTA_AG_AT_CNUM_EVT)
285    CASE_RETURN_STR(BTA_AG_AT_BTRH_EVT)
286    CASE_RETURN_STR(BTA_AG_AT_CLCC_EVT)
287    CASE_RETURN_STR(BTA_AG_AT_COPS_EVT)
288    CASE_RETURN_STR(BTA_AG_AT_UNAT_EVT)
289    CASE_RETURN_STR(BTA_AG_AT_CBC_EVT)
290    CASE_RETURN_STR(BTA_AG_AT_BAC_EVT)
291    CASE_RETURN_STR(BTA_AG_AT_BCS_EVT)
292    CASE_RETURN_STR(BTA_AG_AT_BIND_EVT)
293    CASE_RETURN_STR(BTA_AG_AT_BIEV_EVT)
294
295    default:
296      return "UNKNOWN MSG ID";
297  }
298}
299
300const char* dump_hf_client_event(uint16_t event) {
301  switch (event) {
302    CASE_RETURN_STR(BTA_HF_CLIENT_ENABLE_EVT)
303    CASE_RETURN_STR(BTA_HF_CLIENT_REGISTER_EVT)
304    CASE_RETURN_STR(BTA_HF_CLIENT_OPEN_EVT)
305    CASE_RETURN_STR(BTA_HF_CLIENT_CLOSE_EVT)
306    CASE_RETURN_STR(BTA_HF_CLIENT_CONN_EVT)
307    CASE_RETURN_STR(BTA_HF_CLIENT_AUDIO_OPEN_EVT)
308    CASE_RETURN_STR(BTA_HF_CLIENT_AUDIO_MSBC_OPEN_EVT)
309    CASE_RETURN_STR(BTA_HF_CLIENT_AUDIO_CLOSE_EVT)
310    CASE_RETURN_STR(BTA_HF_CLIENT_SPK_EVT)
311    CASE_RETURN_STR(BTA_HF_CLIENT_MIC_EVT)
312    CASE_RETURN_STR(BTA_HF_CLIENT_DISABLE_EVT)
313    CASE_RETURN_STR(BTA_HF_CLIENT_IND_EVT)
314    CASE_RETURN_STR(BTA_HF_CLIENT_VOICE_REC_EVT)
315    CASE_RETURN_STR(BTA_HF_CLIENT_OPERATOR_NAME_EVT)
316    CASE_RETURN_STR(BTA_HF_CLIENT_CLIP_EVT)
317    CASE_RETURN_STR(BTA_HF_CLIENT_CCWA_EVT)
318    CASE_RETURN_STR(BTA_HF_CLIENT_AT_RESULT_EVT)
319    CASE_RETURN_STR(BTA_HF_CLIENT_CLCC_EVT)
320    CASE_RETURN_STR(BTA_HF_CLIENT_CNUM_EVT)
321    CASE_RETURN_STR(BTA_HF_CLIENT_BTRH_EVT)
322    CASE_RETURN_STR(BTA_HF_CLIENT_BSIR_EVT)
323    CASE_RETURN_STR(BTA_HF_CLIENT_BINP_EVT)
324    CASE_RETURN_STR(BTA_HF_CLIENT_RING_INDICATION)
325    default:
326      return "UNKNOWN MSG ID";
327  }
328}
329
330const char* dump_hh_event(uint16_t event) {
331  switch (event) {
332    CASE_RETURN_STR(BTA_HH_ENABLE_EVT)
333    CASE_RETURN_STR(BTA_HH_DISABLE_EVT)
334    CASE_RETURN_STR(BTA_HH_OPEN_EVT)
335    CASE_RETURN_STR(BTA_HH_CLOSE_EVT)
336    CASE_RETURN_STR(BTA_HH_GET_DSCP_EVT)
337    CASE_RETURN_STR(BTA_HH_GET_PROTO_EVT)
338    CASE_RETURN_STR(BTA_HH_GET_RPT_EVT)
339    CASE_RETURN_STR(BTA_HH_GET_IDLE_EVT)
340    CASE_RETURN_STR(BTA_HH_SET_PROTO_EVT)
341    CASE_RETURN_STR(BTA_HH_SET_RPT_EVT)
342    CASE_RETURN_STR(BTA_HH_SET_IDLE_EVT)
343    CASE_RETURN_STR(BTA_HH_VC_UNPLUG_EVT)
344    CASE_RETURN_STR(BTA_HH_ADD_DEV_EVT)
345    CASE_RETURN_STR(BTA_HH_RMV_DEV_EVT)
346    CASE_RETURN_STR(BTA_HH_API_ERR_EVT)
347    default:
348      return "UNKNOWN MSG ID";
349  }
350}
351
352const char* dump_hf_conn_state(uint16_t event) {
353  switch (event) {
354    CASE_RETURN_STR(BTHF_CONNECTION_STATE_DISCONNECTED)
355    CASE_RETURN_STR(BTHF_CONNECTION_STATE_CONNECTING)
356    CASE_RETURN_STR(BTHF_CONNECTION_STATE_CONNECTED)
357    CASE_RETURN_STR(BTHF_CONNECTION_STATE_SLC_CONNECTED)
358    CASE_RETURN_STR(BTHF_CONNECTION_STATE_DISCONNECTING)
359    default:
360      return "UNKNOWN MSG ID";
361  }
362}
363
364const char* dump_hd_event(uint16_t event) {
365  switch (event) {
366    CASE_RETURN_STR(BTA_HD_ENABLE_EVT)
367    CASE_RETURN_STR(BTA_HD_DISABLE_EVT)
368    CASE_RETURN_STR(BTA_HD_REGISTER_APP_EVT)
369    CASE_RETURN_STR(BTA_HD_UNREGISTER_APP_EVT)
370    CASE_RETURN_STR(BTA_HD_OPEN_EVT)
371    CASE_RETURN_STR(BTA_HD_CLOSE_EVT)
372    CASE_RETURN_STR(BTA_HD_GET_REPORT_EVT)
373    CASE_RETURN_STR(BTA_HD_SET_REPORT_EVT)
374    CASE_RETURN_STR(BTA_HD_SET_PROTOCOL_EVT)
375    CASE_RETURN_STR(BTA_HD_INTR_DATA_EVT)
376    CASE_RETURN_STR(BTA_HD_VC_UNPLUG_EVT)
377    CASE_RETURN_STR(BTA_HD_CONN_STATE_EVT)
378    CASE_RETURN_STR(BTA_HD_API_ERR_EVT)
379    default:
380      return "UNKNOWN MSG ID";
381  }
382}
383
384const char* dump_hf_call_state(bthf_call_state_t call_state) {
385  switch (call_state) {
386    CASE_RETURN_STR(BTHF_CALL_STATE_IDLE)
387    CASE_RETURN_STR(BTHF_CALL_STATE_HELD)
388    CASE_RETURN_STR(BTHF_CALL_STATE_DIALING)
389    CASE_RETURN_STR(BTHF_CALL_STATE_ALERTING)
390    CASE_RETURN_STR(BTHF_CALL_STATE_INCOMING)
391    CASE_RETURN_STR(BTHF_CALL_STATE_WAITING)
392    CASE_RETURN_STR(BTHF_CALL_STATE_ACTIVE)
393    default:
394      return "UNKNOWN CALL STATE";
395  }
396}
397
398const char* dump_thread_evt(bt_cb_thread_evt evt) {
399  switch (evt) {
400    CASE_RETURN_STR(ASSOCIATE_JVM)
401    CASE_RETURN_STR(DISASSOCIATE_JVM)
402
403    default:
404      return "unknown thread evt";
405  }
406}
407
408const char* dump_hf_audio_state(uint16_t event) {
409  switch (event) {
410    CASE_RETURN_STR(BTHF_AUDIO_STATE_DISCONNECTED)
411    CASE_RETURN_STR(BTHF_AUDIO_STATE_CONNECTING)
412    CASE_RETURN_STR(BTHF_AUDIO_STATE_CONNECTED)
413    CASE_RETURN_STR(BTHF_AUDIO_STATE_DISCONNECTING)
414    default:
415      return "UNKNOWN MSG ID";
416  }
417}
418
419const char* dump_av_conn_state(uint16_t event) {
420  switch (event) {
421    CASE_RETURN_STR(BTAV_CONNECTION_STATE_DISCONNECTED)
422    CASE_RETURN_STR(BTAV_CONNECTION_STATE_CONNECTING)
423    CASE_RETURN_STR(BTAV_CONNECTION_STATE_CONNECTED)
424    CASE_RETURN_STR(BTAV_CONNECTION_STATE_DISCONNECTING)
425    default:
426      return "UNKNOWN MSG ID";
427  }
428}
429
430const char* dump_av_audio_state(uint16_t event) {
431  switch (event) {
432    CASE_RETURN_STR(BTAV_AUDIO_STATE_REMOTE_SUSPEND)
433    CASE_RETURN_STR(BTAV_AUDIO_STATE_STOPPED)
434    CASE_RETURN_STR(BTAV_AUDIO_STATE_STARTED)
435    default:
436      return "UNKNOWN MSG ID";
437  }
438}
439
440const char* dump_adapter_scan_mode(bt_scan_mode_t mode) {
441  switch (mode) {
442    CASE_RETURN_STR(BT_SCAN_MODE_NONE)
443    CASE_RETURN_STR(BT_SCAN_MODE_CONNECTABLE)
444    CASE_RETURN_STR(BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE)
445
446    default:
447      return "unknown scan mode";
448  }
449}
450
451const char* dump_bt_status(bt_status_t status) {
452  switch (status) {
453    CASE_RETURN_STR(BT_STATUS_SUCCESS)
454    CASE_RETURN_STR(BT_STATUS_FAIL)
455    CASE_RETURN_STR(BT_STATUS_NOT_READY)
456    CASE_RETURN_STR(BT_STATUS_NOMEM)
457    CASE_RETURN_STR(BT_STATUS_BUSY)
458    CASE_RETURN_STR(BT_STATUS_UNSUPPORTED)
459
460    default:
461      return "unknown scan mode";
462  }
463}
464
465const char* dump_rc_event(uint8_t event) {
466  switch (event) {
467    CASE_RETURN_STR(BTA_AV_RC_OPEN_EVT)
468    CASE_RETURN_STR(BTA_AV_RC_CLOSE_EVT)
469    CASE_RETURN_STR(BTA_AV_RC_BROWSE_OPEN_EVT)
470    CASE_RETURN_STR(BTA_AV_RC_BROWSE_CLOSE_EVT)
471    CASE_RETURN_STR(BTA_AV_REMOTE_CMD_EVT)
472    CASE_RETURN_STR(BTA_AV_REMOTE_RSP_EVT)
473    CASE_RETURN_STR(BTA_AV_VENDOR_CMD_EVT)
474    CASE_RETURN_STR(BTA_AV_VENDOR_RSP_EVT)
475    CASE_RETURN_STR(BTA_AV_META_MSG_EVT)
476    CASE_RETURN_STR(BTA_AV_RC_FEAT_EVT)
477    default:
478      return "UNKNOWN_EVENT";
479  }
480}
481
482const char* dump_rc_notification_event_id(uint8_t event_id) {
483  switch (event_id) {
484    CASE_RETURN_STR(AVRC_EVT_PLAY_STATUS_CHANGE)
485    CASE_RETURN_STR(AVRC_EVT_TRACK_CHANGE)
486    CASE_RETURN_STR(AVRC_EVT_TRACK_REACHED_END)
487    CASE_RETURN_STR(AVRC_EVT_TRACK_REACHED_START)
488    CASE_RETURN_STR(AVRC_EVT_PLAY_POS_CHANGED)
489    CASE_RETURN_STR(AVRC_EVT_BATTERY_STATUS_CHANGE)
490    CASE_RETURN_STR(AVRC_EVT_SYSTEM_STATUS_CHANGE)
491    CASE_RETURN_STR(AVRC_EVT_APP_SETTING_CHANGE)
492    CASE_RETURN_STR(AVRC_EVT_VOLUME_CHANGE)
493    CASE_RETURN_STR(AVRC_EVT_ADDR_PLAYER_CHANGE)
494    CASE_RETURN_STR(AVRC_EVT_AVAL_PLAYERS_CHANGE)
495    CASE_RETURN_STR(AVRC_EVT_NOW_PLAYING_CHANGE)
496    CASE_RETURN_STR(AVRC_EVT_UIDS_CHANGE)
497
498    default:
499      return "Unhandled Event ID";
500  }
501}
502
503const char* dump_rc_pdu(uint8_t pdu) {
504  switch (pdu) {
505    CASE_RETURN_STR(AVRC_PDU_LIST_PLAYER_APP_ATTR)
506    CASE_RETURN_STR(AVRC_PDU_LIST_PLAYER_APP_VALUES)
507    CASE_RETURN_STR(AVRC_PDU_GET_CUR_PLAYER_APP_VALUE)
508    CASE_RETURN_STR(AVRC_PDU_SET_PLAYER_APP_VALUE)
509    CASE_RETURN_STR(AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT)
510    CASE_RETURN_STR(AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT)
511    CASE_RETURN_STR(AVRC_PDU_INFORM_DISPLAY_CHARSET)
512    CASE_RETURN_STR(AVRC_PDU_INFORM_BATTERY_STAT_OF_CT)
513    CASE_RETURN_STR(AVRC_PDU_GET_ELEMENT_ATTR)
514    CASE_RETURN_STR(AVRC_PDU_GET_PLAY_STATUS)
515    CASE_RETURN_STR(AVRC_PDU_REGISTER_NOTIFICATION)
516    CASE_RETURN_STR(AVRC_PDU_REQUEST_CONTINUATION_RSP)
517    CASE_RETURN_STR(AVRC_PDU_ABORT_CONTINUATION_RSP)
518    CASE_RETURN_STR(AVRC_PDU_SET_ABSOLUTE_VOLUME)
519    CASE_RETURN_STR(AVRC_PDU_SET_ADDRESSED_PLAYER)
520    CASE_RETURN_STR(AVRC_PDU_CHANGE_PATH)
521    CASE_RETURN_STR(AVRC_PDU_GET_CAPABILITIES)
522    CASE_RETURN_STR(AVRC_PDU_SET_BROWSED_PLAYER)
523    CASE_RETURN_STR(AVRC_PDU_GET_FOLDER_ITEMS)
524    CASE_RETURN_STR(AVRC_PDU_GET_ITEM_ATTRIBUTES)
525    CASE_RETURN_STR(AVRC_PDU_PLAY_ITEM)
526    CASE_RETURN_STR(AVRC_PDU_SEARCH)
527    CASE_RETURN_STR(AVRC_PDU_ADD_TO_NOW_PLAYING)
528    CASE_RETURN_STR(AVRC_PDU_GET_TOTAL_NUM_OF_ITEMS)
529    CASE_RETURN_STR(AVRC_PDU_GENERAL_REJECT)
530
531    default:
532      return "Unknown PDU";
533  }
534}
535