Outline ![]()
Files ![]()
loading...
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
/******************************************************************************
*
* Copyright (C) 2005-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
#include <string.h>
#include "common/bt_target.h"
#if defined(BTA_HH_INCLUDED) && (BTA_HH_INCLUDED == TRUE)
#include "osi/allocator.h"
#include "bta_hh_int.h"
/* if SSR max latency is not defined by remote device, set the default value
as half of the link supervision timeout */
#define BTA_HH_GET_DEF_SSR_MAX_LAT(x) ((x)>> 1)
/*****************************************************************************
** Constants
*****************************************************************************/
#define BTA_HH_KB_CTRL_MASK 0x11
#define BTA_HH_KB_SHIFT_MASK 0x22
#define BTA_HH_KB_ALT_MASK 0x44
#define BTA_HH_KB_GUI_MASK 0x88
#define BTA_HH_KB_CAPS_LOCK 0x39 /* caps lock */
#define BTA_HH_KB_NUM_LOCK 0x53 /* num lock */
#define BTA_HH_MAX_RPT_CHARS 8
static const UINT8 bta_hh_mod_key_mask[BTA_HH_MOD_MAX_KEY] = {
BTA_HH_KB_CTRL_MASK,
BTA_HH_KB_SHIFT_MASK,
BTA_HH_KB_ALT_MASK,
BTA_HH_KB_GUI_MASK
};
/*******************************************************************************
**
** Function bta_hh_find_cb
**
** Description Find best available control block according to BD address.
**
**
** Returns void
**
*******************************************************************************/
UINT8 bta_hh_find_cb(BD_ADDR bda)
{
UINT8 xx;
/* See how many active devices there are. */
for (xx = 0; xx < BTA_HH_MAX_DEVICE; xx++) {
/* check if any active/known devices is a match */
if ((!bdcmp (bda, bta_hh_cb.kdev[xx].addr) &&
bdcmp(bda, bd_addr_null) != 0) ) {
#if BTA_HH_DEBUG
APPL_TRACE_DEBUG("found kdev_cb[%d] hid_handle = %d ", xx,
bta_hh_cb.kdev[xx].hid_handle)
#endif
return xx;
}
#if BTA_HH_DEBUG
else {
APPL_TRACE_DEBUG("in_use ? [%d] kdev[%d].hid_handle = %d state = [%d]",
bta_hh_cb.kdev[xx].in_use, xx,
bta_hh_cb.kdev[xx].hid_handle,
bta_hh_cb.kdev[xx].state);
}
#endif
}
/* if no active device match, find a spot for it */
for (xx = 0; xx < BTA_HH_MAX_DEVICE; xx++) {
if (!bta_hh_cb.kdev[xx].in_use) {
bdcpy(bta_hh_cb.kdev[xx].addr, bda);
bta_hh_cb.kdev[xx].in_use = TRUE;
break;
}
}
/* If device list full, report BTA_HH_IDX_INVALID */
#if BTA_HH_DEBUG
APPL_TRACE_DEBUG("bta_hh_find_cb:: index = %d while max = %d",
xx, BTA_HH_MAX_DEVICE);
#endif
if (xx == BTA_HH_MAX_DEVICE) {
xx = BTA_HH_IDX_INVALID;
}
return xx;
}
/*******************************************************************************
**
** Function bta_hh_clean_up_kdev
**
** Description Clean up device control block when device is removed from
** manitainace list, and update control block index map.
**
** Returns void
**
*******************************************************************************/
void bta_hh_clean_up_kdev(tBTA_HH_DEV_CB *p_cb)
{
UINT8 index;
if (p_cb->hid_handle != BTA_HH_INVALID_HANDLE ) {
#if BTA_HH_LE_INCLUDED == TRUE
if (p_cb->is_le_device) {
bta_hh_cb.le_cb_index[BTA_HH_GET_LE_CB_IDX(p_cb->hid_handle)] = BTA_HH_IDX_INVALID;
} else
#endif
{
bta_hh_cb.cb_index[p_cb->hid_handle] = BTA_HH_IDX_INVALID;
}
}
/* reset device control block */
index = p_cb->index; /* Preserve index for this control block */
/* Free buffer for report descriptor info */
utl_freebuf((void **)&p_cb->dscp_info.descriptor.dsc_list);
memset(p_cb, 0, sizeof (tBTA_HH_DEV_CB)); /* Reset control block */
p_cb->index = index; /* Restore index for this control block */
p_cb->state = BTA_HH_IDLE_ST;
p_cb->hid_handle = BTA_HH_INVALID_HANDLE;
}
/*******************************************************************************
**
** Function bta_hh_update_di_info
**
** Description Maintain a known device list for BTA HH.
**
** Returns void
**
*******************************************************************************/
void bta_hh_update_di_info(tBTA_HH_DEV_CB *p_cb, UINT16 vendor_id, UINT16 product_id,
UINT16 version, UINT8 flag)
{
#if BTA_HH_DEBUG
APPL_TRACE_DEBUG("vendor_id = 0x%2x product_id = 0x%2x version = 0x%2x",
vendor_id, product_id, version);
#endif
p_cb->dscp_info.vendor_id = vendor_id;
p_cb->dscp_info.product_id = product_id;
p_cb->dscp_info.version = version;
#if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE)
p_cb->dscp_info.flag = flag;
#else
UNUSED(flag);
#endif
}
/*******************************************************************************
**
** Function bta_hh_add_device_to_list
**
** Description Maintain a known device list for BTA HH.
**
** Returns void
**
*******************************************************************************/
void bta_hh_add_device_to_list(tBTA_HH_DEV_CB *p_cb, UINT8 handle,
UINT16 attr_mask,
tHID_DEV_DSCP_INFO *p_dscp_info,
UINT8 sub_class,
UINT16 ssr_max_latency,
UINT16 ssr_min_tout,
UINT8 app_id)
{
#if BTA_HH_DEBUG
APPL_TRACE_DEBUG("subclass = 0x%2x", sub_class);
#endif
p_cb->hid_handle = handle;
p_cb->in_use = TRUE;
p_cb->attr_mask = attr_mask;
p_cb->sub_class = sub_class;
p_cb->app_id = app_id;
p_cb->dscp_info.ssr_max_latency = ssr_max_latency;
p_cb->dscp_info.ssr_min_tout = ssr_min_tout;
/* store report descriptor info */
if ( p_dscp_info) {
utl_freebuf((void **)&p_cb->dscp_info.descriptor.dsc_list);
if (p_dscp_info->dl_len &&
(p_cb->dscp_info.descriptor.dsc_list =
(UINT8 *)osi_malloc(p_dscp_info->dl_len)) != NULL) {
p_cb->dscp_info.descriptor.dl_len = p_dscp_info->dl_len;
memcpy(p_cb->dscp_info.descriptor.dsc_list, p_dscp_info->dsc_list,
p_dscp_info->dl_len);
}
}
return;
}
/*******************************************************************************
**
** Function bta_hh_tod_spt
**
** Description Check to see if this type of device is supported
**
** Returns
**
*******************************************************************************/
BOOLEAN bta_hh_tod_spt(tBTA_HH_DEV_CB *p_cb, UINT8 sub_class)
{
UINT8 xx;
UINT8 cod = (sub_class >> 2); /* lower two bits are reserved */
for (xx = 0 ; xx < p_bta_hh_cfg->max_devt_spt; xx ++) {
if (cod == (UINT8) p_bta_hh_cfg->p_devt_list[xx].tod) {
p_cb->app_id = p_bta_hh_cfg->p_devt_list[xx].app_id;
#if BTA_HH_DEBUG
APPL_TRACE_EVENT("bta_hh_tod_spt sub_class:0x%x supported", sub_class);
#endif
return TRUE;
}
}
#if BTA_HH_DEBUG
APPL_TRACE_ERROR("bta_hh_tod_spt sub_class:0x%x NOT supported", sub_class);
#endif
return FALSE;
}
/*******************************************************************************
**
** Function bta_hh_parse_keybd_rpt
**
** Description This utility function parse a boot mode keyboard report.
**
** Returns void
**
*******************************************************************************/
void bta_hh_parse_keybd_rpt(tBTA_HH_BOOT_RPT *p_kb_data, UINT8 *p_report,
UINT16 report_len)
{
tBTA_HH_KB_CB *p_kb = &bta_hh_cb.kb_cb;
tBTA_HH_KEYBD_RPT *p_data = &p_kb_data->data_rpt.keybd_rpt;
UINT8 this_char, ctl_shift;
UINT16 xx, yy, key_idx = 0;
UINT8 this_report[BTA_HH_MAX_RPT_CHARS];
#if BTA_HH_DEBUG
APPL_TRACE_DEBUG("bta_hh_parse_keybd_rpt: (report=%p, report_len=%d) called",
p_report, report_len);
#endif
if (report_len < 2) {
return;
}
ctl_shift = *p_report++;
report_len--;
if (report_len > BTA_HH_MAX_RPT_CHARS) {
report_len = BTA_HH_MAX_RPT_CHARS;
}
memset (this_report, 0, BTA_HH_MAX_RPT_CHARS);
memset (p_data, 0, sizeof(tBTA_HH_KEYBD_RPT));
memcpy (this_report, p_report, report_len);
/* Take care of shift, control, GUI and alt, modifier keys */
for (xx = 0; xx < BTA_HH_MOD_MAX_KEY; xx ++ ) {
if (ctl_shift & bta_hh_mod_key_mask[xx]) {
APPL_TRACE_DEBUG("Mod Key[%02x] pressed", bta_hh_mod_key_mask[xx] );
p_kb->mod_key[xx] = TRUE;
} else if (p_kb->mod_key[xx]) {
p_kb->mod_key[xx] = FALSE;
}
/* control key flag is set */
p_data->mod_key[xx] = p_kb->mod_key[xx];
}
/***************************************************************************/
/* First step is to remove all characters we saw in the last report */
/***************************************************************************/
for (xx = 0; xx < report_len; xx++) {
for (yy = 0; yy < BTA_HH_MAX_RPT_CHARS; yy++) {
if (this_report[xx] == p_kb->last_report[yy]) {
this_report[xx] = 0;
}
}
}
/***************************************************************************/
/* Now, process all the characters in the report, up to 6 keycodes */
/***************************************************************************/
for (xx = 0; xx < report_len; xx++) {
#if BTA_HH_DEBUG
APPL_TRACE_DEBUG("this_char = %02x", this_report[xx]);
#endif
if ((this_char = this_report[xx]) == 0) {
continue;
}
/* take the key code as the report data */
if (this_report[xx] == BTA_HH_KB_CAPS_LOCK) {
p_kb->caps_lock = p_kb->caps_lock ? FALSE : TRUE;
} else if (this_report[xx] == BTA_HH_KB_NUM_LOCK) {
p_kb->num_lock = p_kb->num_lock ? FALSE : TRUE;
} else {
p_data->this_char[key_idx ++] = this_char;
}
#if BTA_HH_DEBUG
APPL_TRACE_DEBUG("found keycode %02x ", this_report[xx]);
#endif
p_data->caps_lock = p_kb->caps_lock;
p_data->num_lock = p_kb->num_lock;
}
memset (p_kb->last_report, 0, BTA_HH_MAX_RPT_CHARS);
memcpy (p_kb->last_report, p_report, report_len);
return;
}
/*******************************************************************************
**
** Function bta_hh_parse_mice_rpt
**
** Description This utility function parse a boot mode mouse report.
**
** Returns void
**
*******************************************************************************/
void bta_hh_parse_mice_rpt(tBTA_HH_BOOT_RPT *p_mice_data, UINT8 *p_report,
UINT16 report_len)
{
tBTA_HH_MICE_RPT *p_data = &p_mice_data->data_rpt.mice_rpt;
#if BTA_HH_DEBUG
UINT8 xx;
APPL_TRACE_DEBUG("bta_hh_parse_mice_rpt: bta_keybd_rpt_rcvd(report=%p, \
report_len=%d) called", p_report, report_len);
#endif
if (report_len < 3) {
return;
}
if (report_len > BTA_HH_MAX_RPT_CHARS) {
report_len = BTA_HH_MAX_RPT_CHARS;
}
#if BTA_HH_DEBUG
for (xx = 0; xx < report_len; xx++) {
APPL_TRACE_DEBUG("this_char = %02x", p_report[xx]);
}
#endif
/* only first bytes lower 3 bits valid */
p_data->mouse_button = (p_report[0] & 0x07);
/* x displacement */
p_data->delta_x = p_report[1];
/* y displacement */
p_data->delta_y = p_report[2];
#if BTA_HH_DEBUG
APPL_TRACE_DEBUG("mice button: 0x%2x", p_data->mouse_button);
APPL_TRACE_DEBUG("mice move: x = %d y = %d", p_data->delta_x,
p_data->delta_y );
#endif
return;
}
/*******************************************************************************
**
** Function bta_hh_read_ssr_param
**
** Description Read the SSR Parameter for the remote device
**
** Returns tBTA_HH_STATUS operation status
**
*******************************************************************************/
tBTA_HH_STATUS bta_hh_read_ssr_param(BD_ADDR bd_addr, UINT16 *p_max_ssr_lat, UINT16 *p_min_ssr_tout)
{
tBTA_HH_STATUS status = BTA_HH_ERR;
tBTA_HH_CB *p_cb = &bta_hh_cb;
UINT8 i;
UINT16 ssr_max_latency;
for (i = 0; i < BTA_HH_MAX_KNOWN; i ++) {
if (memcmp(p_cb->kdev[i].addr, bd_addr, BD_ADDR_LEN) == 0) {
/* if remote device does not have HIDSSRHostMaxLatency attribute in SDP,
set SSR max latency default value here. */
if (p_cb->kdev[i].dscp_info.ssr_max_latency == HID_SSR_PARAM_INVALID) {
/* The default is calculated as half of link supervision timeout.*/
BTM_GetLinkSuperTout(p_cb->kdev[i].addr, &ssr_max_latency) ;
ssr_max_latency = BTA_HH_GET_DEF_SSR_MAX_LAT(ssr_max_latency);
/* per 1.1 spec, if the newly calculated max latency is greater than
BTA_HH_SSR_MAX_LATENCY_DEF which is 500ms, use BTA_HH_SSR_MAX_LATENCY_DEF */
if (ssr_max_latency > BTA_HH_SSR_MAX_LATENCY_DEF) {
ssr_max_latency = BTA_HH_SSR_MAX_LATENCY_DEF;
}
* p_max_ssr_lat = ssr_max_latency;
} else {
* p_max_ssr_lat = p_cb->kdev[i].dscp_info.ssr_max_latency;
}
if (p_cb->kdev[i].dscp_info.ssr_min_tout == HID_SSR_PARAM_INVALID) {
* p_min_ssr_tout = BTA_HH_SSR_MIN_TOUT_DEF;
} else {
* p_min_ssr_tout = p_cb->kdev[i].dscp_info.ssr_min_tout;
}
status = BTA_HH_OK;
break;
}
}
return status;
}
/*******************************************************************************
**
** Function bta_hh_cleanup_disable
**
** Description when disable finished, cleanup control block and send callback
**
**
** Returns void
**
*******************************************************************************/
void bta_hh_cleanup_disable(tBTA_HH_STATUS status)
{
UINT8 xx;
/* free buffer in CB holding report descriptors */
for (xx = 0; xx < BTA_HH_MAX_DEVICE; xx ++) {
utl_freebuf((void **)&bta_hh_cb.kdev[xx].dscp_info.descriptor.dsc_list);
}
utl_freebuf((void **)&bta_hh_cb.p_disc_db);
if (bta_hh_cb.p_cback) {
(*bta_hh_cb.p_cback)(BTA_HH_DISABLE_EVT, (tBTA_HH*)&status);
/* all connections are down, no waiting for diconnect */
memset(&bta_hh_cb, 0, sizeof(tBTA_HH_CB));
}
}
/*******************************************************************************
**
** Function bta_hh_dev_handle_to_cb_idx
**
** Description convert a HID device handle to the device control block index.
**
**
** Returns UINT8: index of the device control block.
**
*******************************************************************************/
UINT8 bta_hh_dev_handle_to_cb_idx(UINT8 dev_handle)
{
UINT8 index = BTA_HH_IDX_INVALID;
#if BTA_HH_LE_INCLUDED == TRUE
if (BTA_HH_IS_LE_DEV_HDL(dev_handle)) {
if (BTA_HH_IS_LE_DEV_HDL_VALID(dev_handle)) {
index = bta_hh_cb.le_cb_index[BTA_HH_GET_LE_CB_IDX(dev_handle)];
}
#if BTA_HH_DEBUG == TRUE
APPL_TRACE_DEBUG("bta_hh_dev_handle_to_cb_idx dev_handle = %d index = %d", dev_handle, index);
#endif
} else
#endif
{
/* regular HID device checking */
if (dev_handle < BTA_HH_MAX_KNOWN ) {
index = bta_hh_cb.cb_index[dev_handle];
}
}
return index;
}
#if BTA_HH_DEBUG
/*******************************************************************************
**
** Function bta_hh_trace_dev_db
**
** Description Check to see if this type of device is supported
**
** Returns
**
*******************************************************************************/
void bta_hh_trace_dev_db(void)
{
UINT8 xx;
APPL_TRACE_DEBUG("bta_hh_trace_dev_db:: Device DB list********************");
for (xx = 0; xx < BTA_HH_MAX_DEVICE; xx++) {
APPL_TRACE_DEBUG("kdev[%d] in_use[%d] handle[%d] ", xx,
bta_hh_cb.kdev[xx].in_use, bta_hh_cb.kdev[xx].hid_handle);
APPL_TRACE_DEBUG("\t\t\t attr_mask[%04x] state [%d] sub_class[%02x] index = %d",
bta_hh_cb.kdev[xx].attr_mask, bta_hh_cb.kdev[xx].state,
bta_hh_cb.kdev[xx].sub_class, bta_hh_cb.kdev[xx].index);
}
APPL_TRACE_DEBUG("*********************************************************");
}
#endif
#endif /* HL_INCLUDED */
Details ![]()
Show: from Types: Columns: ![]( "Show Project Names")
![]( "Show Locations")
![]( "Show Referring Symbols")
![]( "Show Scope")
This file uses the notable symbols shown below. Click anywhere in the file to view more details.