forked from aosp-mirror/platform_frameworks_base
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathInputReader.cpp
More file actions
6530 lines (5689 loc) · 254 KB
/
InputReader.cpp
File metadata and controls
6530 lines (5689 loc) · 254 KB
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
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* Copyright (C) 2010 The Android Open Source Project
*
* 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.
*/
#define LOG_TAG "InputReader"
//#define LOG_NDEBUG 0
// Log debug messages for each raw event received from the EventHub.
#define DEBUG_RAW_EVENTS 0
// Log debug messages about touch screen filtering hacks.
#define DEBUG_HACKS 0
// Log debug messages about virtual key processing.
#define DEBUG_VIRTUAL_KEYS 0
// Log debug messages about pointers.
#define DEBUG_POINTERS 0
// Log debug messages about pointer assignment calculations.
#define DEBUG_POINTER_ASSIGNMENT 0
// Log debug messages about gesture detection.
#define DEBUG_GESTURES 0
// Log debug messages about the vibrator.
#define DEBUG_VIBRATOR 0
#include "InputReader.h"
#include <cutils/log.h>
#include <input/Keyboard.h>
#include <input/VirtualKeyMap.h>
#include <stddef.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <limits.h>
#include <math.h>
#define INDENT " "
#define INDENT2 " "
#define INDENT3 " "
#define INDENT4 " "
#define INDENT5 " "
namespace android {
// --- Constants ---
// Maximum number of slots supported when using the slot-based Multitouch Protocol B.
static const size_t MAX_SLOTS = 32;
// --- Static Functions ---
template<typename T>
inline static T abs(const T& value) {
return value < 0 ? - value : value;
}
template<typename T>
inline static T min(const T& a, const T& b) {
return a < b ? a : b;
}
template<typename T>
inline static void swap(T& a, T& b) {
T temp = a;
a = b;
b = temp;
}
inline static float avg(float x, float y) {
return (x + y) / 2;
}
inline static float distance(float x1, float y1, float x2, float y2) {
return hypotf(x1 - x2, y1 - y2);
}
inline static int32_t signExtendNybble(int32_t value) {
return value >= 8 ? value - 16 : value;
}
static inline const char* toString(bool value) {
return value ? "true" : "false";
}
static int32_t rotateValueUsingRotationMap(int32_t value, int32_t orientation,
const int32_t map[][4], size_t mapSize) {
if (orientation != DISPLAY_ORIENTATION_0) {
for (size_t i = 0; i < mapSize; i++) {
if (value == map[i][0]) {
return map[i][orientation];
}
}
}
return value;
}
static const int32_t keyCodeRotationMap[][4] = {
// key codes enumerated counter-clockwise with the original (unrotated) key first
// no rotation, 90 degree rotation, 180 degree rotation, 270 degree rotation
{ AKEYCODE_DPAD_DOWN, AKEYCODE_DPAD_RIGHT, AKEYCODE_DPAD_UP, AKEYCODE_DPAD_LEFT },
{ AKEYCODE_DPAD_RIGHT, AKEYCODE_DPAD_UP, AKEYCODE_DPAD_LEFT, AKEYCODE_DPAD_DOWN },
{ AKEYCODE_DPAD_UP, AKEYCODE_DPAD_LEFT, AKEYCODE_DPAD_DOWN, AKEYCODE_DPAD_RIGHT },
{ AKEYCODE_DPAD_LEFT, AKEYCODE_DPAD_DOWN, AKEYCODE_DPAD_RIGHT, AKEYCODE_DPAD_UP },
};
static const size_t keyCodeRotationMapSize =
sizeof(keyCodeRotationMap) / sizeof(keyCodeRotationMap[0]);
static int32_t rotateKeyCode(int32_t keyCode, int32_t orientation) {
return rotateValueUsingRotationMap(keyCode, orientation,
keyCodeRotationMap, keyCodeRotationMapSize);
}
static void rotateDelta(int32_t orientation, float* deltaX, float* deltaY) {
float temp;
switch (orientation) {
case DISPLAY_ORIENTATION_90:
temp = *deltaX;
*deltaX = *deltaY;
*deltaY = -temp;
break;
case DISPLAY_ORIENTATION_180:
*deltaX = -*deltaX;
*deltaY = -*deltaY;
break;
case DISPLAY_ORIENTATION_270:
temp = *deltaX;
*deltaX = -*deltaY;
*deltaY = temp;
break;
}
}
static inline bool sourcesMatchMask(uint32_t sources, uint32_t sourceMask) {
return (sources & sourceMask & ~ AINPUT_SOURCE_CLASS_MASK) != 0;
}
// Returns true if the pointer should be reported as being down given the specified
// button states. This determines whether the event is reported as a touch event.
static bool isPointerDown(int32_t buttonState) {
return buttonState &
(AMOTION_EVENT_BUTTON_PRIMARY | AMOTION_EVENT_BUTTON_SECONDARY
| AMOTION_EVENT_BUTTON_TERTIARY);
}
static float calculateCommonVector(float a, float b) {
if (a > 0 && b > 0) {
return a < b ? a : b;
} else if (a < 0 && b < 0) {
return a > b ? a : b;
} else {
return 0;
}
}
static void synthesizeButtonKey(InputReaderContext* context, int32_t action,
nsecs_t when, int32_t deviceId, uint32_t source,
uint32_t policyFlags, int32_t lastButtonState, int32_t currentButtonState,
int32_t buttonState, int32_t keyCode) {
if (
(action == AKEY_EVENT_ACTION_DOWN
&& !(lastButtonState & buttonState)
&& (currentButtonState & buttonState))
|| (action == AKEY_EVENT_ACTION_UP
&& (lastButtonState & buttonState)
&& !(currentButtonState & buttonState))) {
NotifyKeyArgs args(when, deviceId, source, policyFlags,
action, 0, keyCode, 0, context->getGlobalMetaState(), when);
context->getListener()->notifyKey(&args);
}
}
static void synthesizeButtonKeys(InputReaderContext* context, int32_t action,
nsecs_t when, int32_t deviceId, uint32_t source,
uint32_t policyFlags, int32_t lastButtonState, int32_t currentButtonState) {
synthesizeButtonKey(context, action, when, deviceId, source, policyFlags,
lastButtonState, currentButtonState,
AMOTION_EVENT_BUTTON_BACK, AKEYCODE_BACK);
synthesizeButtonKey(context, action, when, deviceId, source, policyFlags,
lastButtonState, currentButtonState,
AMOTION_EVENT_BUTTON_FORWARD, AKEYCODE_FORWARD);
}
// --- InputReaderConfiguration ---
bool InputReaderConfiguration::getDisplayInfo(bool external, DisplayViewport* outViewport) const {
const DisplayViewport& viewport = external ? mExternalDisplay : mInternalDisplay;
if (viewport.displayId >= 0) {
*outViewport = viewport;
return true;
}
return false;
}
void InputReaderConfiguration::setDisplayInfo(bool external, const DisplayViewport& viewport) {
DisplayViewport& v = external ? mExternalDisplay : mInternalDisplay;
v = viewport;
}
// --- InputReader ---
InputReader::InputReader(const sp<EventHubInterface>& eventHub,
const sp<InputReaderPolicyInterface>& policy,
const sp<InputListenerInterface>& listener) :
mContext(this), mEventHub(eventHub), mPolicy(policy),
mGlobalMetaState(0), mGeneration(1),
mDisableVirtualKeysTimeout(LLONG_MIN), mNextTimeout(LLONG_MAX),
mConfigurationChangesToRefresh(0) {
mQueuedListener = new QueuedInputListener(listener);
{ // acquire lock
AutoMutex _l(mLock);
refreshConfigurationLocked(0);
updateGlobalMetaStateLocked();
} // release lock
}
InputReader::~InputReader() {
for (size_t i = 0; i < mDevices.size(); i++) {
delete mDevices.valueAt(i);
}
}
void InputReader::loopOnce() {
int32_t oldGeneration;
int32_t timeoutMillis;
bool inputDevicesChanged = false;
Vector<InputDeviceInfo> inputDevices;
{ // acquire lock
AutoMutex _l(mLock);
oldGeneration = mGeneration;
timeoutMillis = -1;
uint32_t changes = mConfigurationChangesToRefresh;
if (changes) {
mConfigurationChangesToRefresh = 0;
timeoutMillis = 0;
refreshConfigurationLocked(changes);
} else if (mNextTimeout != LLONG_MAX) {
nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);
timeoutMillis = toMillisecondTimeoutDelay(now, mNextTimeout);
}
} // release lock
size_t count = mEventHub->getEvents(timeoutMillis, mEventBuffer, EVENT_BUFFER_SIZE);
{ // acquire lock
AutoMutex _l(mLock);
mReaderIsAliveCondition.broadcast();
if (count) {
processEventsLocked(mEventBuffer, count);
}
if (mNextTimeout != LLONG_MAX) {
nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);
if (now >= mNextTimeout) {
#if DEBUG_RAW_EVENTS
ALOGD("Timeout expired, latency=%0.3fms", (now - mNextTimeout) * 0.000001f);
#endif
mNextTimeout = LLONG_MAX;
timeoutExpiredLocked(now);
}
}
if (oldGeneration != mGeneration) {
inputDevicesChanged = true;
getInputDevicesLocked(inputDevices);
}
} // release lock
// Send out a message that the describes the changed input devices.
if (inputDevicesChanged) {
mPolicy->notifyInputDevicesChanged(inputDevices);
}
// Flush queued events out to the listener.
// This must happen outside of the lock because the listener could potentially call
// back into the InputReader's methods, such as getScanCodeState, or become blocked
// on another thread similarly waiting to acquire the InputReader lock thereby
// resulting in a deadlock. This situation is actually quite plausible because the
// listener is actually the input dispatcher, which calls into the window manager,
// which occasionally calls into the input reader.
mQueuedListener->flush();
}
void InputReader::processEventsLocked(const RawEvent* rawEvents, size_t count) {
for (const RawEvent* rawEvent = rawEvents; count;) {
int32_t type = rawEvent->type;
size_t batchSize = 1;
if (type < EventHubInterface::FIRST_SYNTHETIC_EVENT) {
int32_t deviceId = rawEvent->deviceId;
while (batchSize < count) {
if (rawEvent[batchSize].type >= EventHubInterface::FIRST_SYNTHETIC_EVENT
|| rawEvent[batchSize].deviceId != deviceId) {
break;
}
batchSize += 1;
}
#if DEBUG_RAW_EVENTS
ALOGD("BatchSize: %d Count: %d", batchSize, count);
#endif
processEventsForDeviceLocked(deviceId, rawEvent, batchSize);
} else {
switch (rawEvent->type) {
case EventHubInterface::DEVICE_ADDED:
addDeviceLocked(rawEvent->when, rawEvent->deviceId);
break;
case EventHubInterface::DEVICE_REMOVED:
removeDeviceLocked(rawEvent->when, rawEvent->deviceId);
break;
case EventHubInterface::FINISHED_DEVICE_SCAN:
handleConfigurationChangedLocked(rawEvent->when);
break;
default:
ALOG_ASSERT(false); // can't happen
break;
}
}
count -= batchSize;
rawEvent += batchSize;
}
}
void InputReader::addDeviceLocked(nsecs_t when, int32_t deviceId) {
ssize_t deviceIndex = mDevices.indexOfKey(deviceId);
if (deviceIndex >= 0) {
ALOGW("Ignoring spurious device added event for deviceId %d.", deviceId);
return;
}
InputDeviceIdentifier identifier = mEventHub->getDeviceIdentifier(deviceId);
uint32_t classes = mEventHub->getDeviceClasses(deviceId);
int32_t controllerNumber = mEventHub->getDeviceControllerNumber(deviceId);
InputDevice* device = createDeviceLocked(deviceId, controllerNumber, identifier, classes);
device->configure(when, &mConfig, 0);
device->reset(when);
if (device->isIgnored()) {
ALOGI("Device added: id=%d, name='%s' (ignored non-input device)", deviceId,
identifier.name.string());
} else {
ALOGI("Device added: id=%d, name='%s', sources=0x%08x", deviceId,
identifier.name.string(), device->getSources());
}
mDevices.add(deviceId, device);
bumpGenerationLocked();
}
void InputReader::removeDeviceLocked(nsecs_t when, int32_t deviceId) {
InputDevice* device = NULL;
ssize_t deviceIndex = mDevices.indexOfKey(deviceId);
if (deviceIndex < 0) {
ALOGW("Ignoring spurious device removed event for deviceId %d.", deviceId);
return;
}
device = mDevices.valueAt(deviceIndex);
mDevices.removeItemsAt(deviceIndex, 1);
bumpGenerationLocked();
if (device->isIgnored()) {
ALOGI("Device removed: id=%d, name='%s' (ignored non-input device)",
device->getId(), device->getName().string());
} else {
ALOGI("Device removed: id=%d, name='%s', sources=0x%08x",
device->getId(), device->getName().string(), device->getSources());
}
device->reset(when);
delete device;
}
InputDevice* InputReader::createDeviceLocked(int32_t deviceId, int32_t controllerNumber,
const InputDeviceIdentifier& identifier, uint32_t classes) {
InputDevice* device = new InputDevice(&mContext, deviceId, bumpGenerationLocked(),
controllerNumber, identifier, classes);
// External devices.
if (classes & INPUT_DEVICE_CLASS_EXTERNAL) {
device->setExternal(true);
}
// Switch-like devices.
if (classes & INPUT_DEVICE_CLASS_SWITCH) {
device->addMapper(new SwitchInputMapper(device));
}
// Vibrator-like devices.
if (classes & INPUT_DEVICE_CLASS_VIBRATOR) {
device->addMapper(new VibratorInputMapper(device));
}
// Keyboard-like devices.
uint32_t keyboardSource = 0;
int32_t keyboardType = AINPUT_KEYBOARD_TYPE_NON_ALPHABETIC;
if (classes & INPUT_DEVICE_CLASS_KEYBOARD) {
keyboardSource |= AINPUT_SOURCE_KEYBOARD;
}
if (classes & INPUT_DEVICE_CLASS_ALPHAKEY) {
keyboardType = AINPUT_KEYBOARD_TYPE_ALPHABETIC;
}
if (classes & INPUT_DEVICE_CLASS_DPAD) {
keyboardSource |= AINPUT_SOURCE_DPAD;
}
if (classes & INPUT_DEVICE_CLASS_GAMEPAD) {
keyboardSource |= AINPUT_SOURCE_GAMEPAD;
}
if (keyboardSource != 0) {
device->addMapper(new KeyboardInputMapper(device, keyboardSource, keyboardType));
}
// Cursor-like devices.
if (classes & INPUT_DEVICE_CLASS_CURSOR) {
device->addMapper(new CursorInputMapper(device));
}
// Touchscreens and touchpad devices.
if (classes & INPUT_DEVICE_CLASS_TOUCH_MT) {
device->addMapper(new MultiTouchInputMapper(device));
} else if (classes & INPUT_DEVICE_CLASS_TOUCH) {
device->addMapper(new SingleTouchInputMapper(device));
}
// Joystick-like devices.
if (classes & INPUT_DEVICE_CLASS_JOYSTICK) {
device->addMapper(new JoystickInputMapper(device));
}
return device;
}
void InputReader::processEventsForDeviceLocked(int32_t deviceId,
const RawEvent* rawEvents, size_t count) {
ssize_t deviceIndex = mDevices.indexOfKey(deviceId);
if (deviceIndex < 0) {
ALOGW("Discarding event for unknown deviceId %d.", deviceId);
return;
}
InputDevice* device = mDevices.valueAt(deviceIndex);
if (device->isIgnored()) {
//ALOGD("Discarding event for ignored deviceId %d.", deviceId);
return;
}
device->process(rawEvents, count);
}
void InputReader::timeoutExpiredLocked(nsecs_t when) {
for (size_t i = 0; i < mDevices.size(); i++) {
InputDevice* device = mDevices.valueAt(i);
if (!device->isIgnored()) {
device->timeoutExpired(when);
}
}
}
void InputReader::handleConfigurationChangedLocked(nsecs_t when) {
// Reset global meta state because it depends on the list of all configured devices.
updateGlobalMetaStateLocked();
// Enqueue configuration changed.
NotifyConfigurationChangedArgs args(when);
mQueuedListener->notifyConfigurationChanged(&args);
}
void InputReader::refreshConfigurationLocked(uint32_t changes) {
mPolicy->getReaderConfiguration(&mConfig);
mEventHub->setExcludedDevices(mConfig.excludedDeviceNames);
if (changes) {
ALOGI("Reconfiguring input devices. changes=0x%08x", changes);
nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);
if (changes & InputReaderConfiguration::CHANGE_MUST_REOPEN) {
mEventHub->requestReopenDevices();
} else {
for (size_t i = 0; i < mDevices.size(); i++) {
InputDevice* device = mDevices.valueAt(i);
device->configure(now, &mConfig, changes);
}
}
}
}
void InputReader::updateGlobalMetaStateLocked() {
mGlobalMetaState = 0;
for (size_t i = 0; i < mDevices.size(); i++) {
InputDevice* device = mDevices.valueAt(i);
mGlobalMetaState |= device->getMetaState();
}
}
int32_t InputReader::getGlobalMetaStateLocked() {
return mGlobalMetaState;
}
void InputReader::disableVirtualKeysUntilLocked(nsecs_t time) {
mDisableVirtualKeysTimeout = time;
}
bool InputReader::shouldDropVirtualKeyLocked(nsecs_t now,
InputDevice* device, int32_t keyCode, int32_t scanCode) {
if (now < mDisableVirtualKeysTimeout) {
ALOGI("Dropping virtual key from device %s because virtual keys are "
"temporarily disabled for the next %0.3fms. keyCode=%d, scanCode=%d",
device->getName().string(),
(mDisableVirtualKeysTimeout - now) * 0.000001,
keyCode, scanCode);
return true;
} else {
return false;
}
}
void InputReader::fadePointerLocked() {
for (size_t i = 0; i < mDevices.size(); i++) {
InputDevice* device = mDevices.valueAt(i);
device->fadePointer();
}
}
void InputReader::requestTimeoutAtTimeLocked(nsecs_t when) {
if (when < mNextTimeout) {
mNextTimeout = when;
mEventHub->wake();
}
}
int32_t InputReader::bumpGenerationLocked() {
return ++mGeneration;
}
void InputReader::getInputDevices(Vector<InputDeviceInfo>& outInputDevices) {
AutoMutex _l(mLock);
getInputDevicesLocked(outInputDevices);
}
void InputReader::getInputDevicesLocked(Vector<InputDeviceInfo>& outInputDevices) {
outInputDevices.clear();
size_t numDevices = mDevices.size();
for (size_t i = 0; i < numDevices; i++) {
InputDevice* device = mDevices.valueAt(i);
if (!device->isIgnored()) {
outInputDevices.push();
device->getDeviceInfo(&outInputDevices.editTop());
}
}
}
int32_t InputReader::getKeyCodeState(int32_t deviceId, uint32_t sourceMask,
int32_t keyCode) {
AutoMutex _l(mLock);
return getStateLocked(deviceId, sourceMask, keyCode, &InputDevice::getKeyCodeState);
}
int32_t InputReader::getScanCodeState(int32_t deviceId, uint32_t sourceMask,
int32_t scanCode) {
AutoMutex _l(mLock);
return getStateLocked(deviceId, sourceMask, scanCode, &InputDevice::getScanCodeState);
}
int32_t InputReader::getSwitchState(int32_t deviceId, uint32_t sourceMask, int32_t switchCode) {
AutoMutex _l(mLock);
return getStateLocked(deviceId, sourceMask, switchCode, &InputDevice::getSwitchState);
}
int32_t InputReader::getStateLocked(int32_t deviceId, uint32_t sourceMask, int32_t code,
GetStateFunc getStateFunc) {
int32_t result = AKEY_STATE_UNKNOWN;
if (deviceId >= 0) {
ssize_t deviceIndex = mDevices.indexOfKey(deviceId);
if (deviceIndex >= 0) {
InputDevice* device = mDevices.valueAt(deviceIndex);
if (! device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) {
result = (device->*getStateFunc)(sourceMask, code);
}
}
} else {
size_t numDevices = mDevices.size();
for (size_t i = 0; i < numDevices; i++) {
InputDevice* device = mDevices.valueAt(i);
if (! device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) {
// If any device reports AKEY_STATE_DOWN or AKEY_STATE_VIRTUAL, return that
// value. Otherwise, return AKEY_STATE_UP as long as one device reports it.
int32_t currentResult = (device->*getStateFunc)(sourceMask, code);
if (currentResult >= AKEY_STATE_DOWN) {
return currentResult;
} else if (currentResult == AKEY_STATE_UP) {
result = currentResult;
}
}
}
}
return result;
}
bool InputReader::hasKeys(int32_t deviceId, uint32_t sourceMask,
size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags) {
AutoMutex _l(mLock);
memset(outFlags, 0, numCodes);
return markSupportedKeyCodesLocked(deviceId, sourceMask, numCodes, keyCodes, outFlags);
}
bool InputReader::markSupportedKeyCodesLocked(int32_t deviceId, uint32_t sourceMask,
size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags) {
bool result = false;
if (deviceId >= 0) {
ssize_t deviceIndex = mDevices.indexOfKey(deviceId);
if (deviceIndex >= 0) {
InputDevice* device = mDevices.valueAt(deviceIndex);
if (! device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) {
result = device->markSupportedKeyCodes(sourceMask,
numCodes, keyCodes, outFlags);
}
}
} else {
size_t numDevices = mDevices.size();
for (size_t i = 0; i < numDevices; i++) {
InputDevice* device = mDevices.valueAt(i);
if (! device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) {
result |= device->markSupportedKeyCodes(sourceMask,
numCodes, keyCodes, outFlags);
}
}
}
return result;
}
void InputReader::requestRefreshConfiguration(uint32_t changes) {
AutoMutex _l(mLock);
if (changes) {
bool needWake = !mConfigurationChangesToRefresh;
mConfigurationChangesToRefresh |= changes;
if (needWake) {
mEventHub->wake();
}
}
}
void InputReader::vibrate(int32_t deviceId, const nsecs_t* pattern, size_t patternSize,
ssize_t repeat, int32_t token) {
AutoMutex _l(mLock);
ssize_t deviceIndex = mDevices.indexOfKey(deviceId);
if (deviceIndex >= 0) {
InputDevice* device = mDevices.valueAt(deviceIndex);
device->vibrate(pattern, patternSize, repeat, token);
}
}
void InputReader::cancelVibrate(int32_t deviceId, int32_t token) {
AutoMutex _l(mLock);
ssize_t deviceIndex = mDevices.indexOfKey(deviceId);
if (deviceIndex >= 0) {
InputDevice* device = mDevices.valueAt(deviceIndex);
device->cancelVibrate(token);
}
}
void InputReader::dump(String8& dump) {
AutoMutex _l(mLock);
mEventHub->dump(dump);
dump.append("\n");
dump.append("Input Reader State:\n");
for (size_t i = 0; i < mDevices.size(); i++) {
mDevices.valueAt(i)->dump(dump);
}
dump.append(INDENT "Configuration:\n");
dump.append(INDENT2 "ExcludedDeviceNames: [");
for (size_t i = 0; i < mConfig.excludedDeviceNames.size(); i++) {
if (i != 0) {
dump.append(", ");
}
dump.append(mConfig.excludedDeviceNames.itemAt(i).string());
}
dump.append("]\n");
dump.appendFormat(INDENT2 "VirtualKeyQuietTime: %0.1fms\n",
mConfig.virtualKeyQuietTime * 0.000001f);
dump.appendFormat(INDENT2 "PointerVelocityControlParameters: "
"scale=%0.3f, lowThreshold=%0.3f, highThreshold=%0.3f, acceleration=%0.3f\n",
mConfig.pointerVelocityControlParameters.scale,
mConfig.pointerVelocityControlParameters.lowThreshold,
mConfig.pointerVelocityControlParameters.highThreshold,
mConfig.pointerVelocityControlParameters.acceleration);
dump.appendFormat(INDENT2 "WheelVelocityControlParameters: "
"scale=%0.3f, lowThreshold=%0.3f, highThreshold=%0.3f, acceleration=%0.3f\n",
mConfig.wheelVelocityControlParameters.scale,
mConfig.wheelVelocityControlParameters.lowThreshold,
mConfig.wheelVelocityControlParameters.highThreshold,
mConfig.wheelVelocityControlParameters.acceleration);
dump.appendFormat(INDENT2 "PointerGesture:\n");
dump.appendFormat(INDENT3 "Enabled: %s\n",
toString(mConfig.pointerGesturesEnabled));
dump.appendFormat(INDENT3 "QuietInterval: %0.1fms\n",
mConfig.pointerGestureQuietInterval * 0.000001f);
dump.appendFormat(INDENT3 "DragMinSwitchSpeed: %0.1fpx/s\n",
mConfig.pointerGestureDragMinSwitchSpeed);
dump.appendFormat(INDENT3 "TapInterval: %0.1fms\n",
mConfig.pointerGestureTapInterval * 0.000001f);
dump.appendFormat(INDENT3 "TapDragInterval: %0.1fms\n",
mConfig.pointerGestureTapDragInterval * 0.000001f);
dump.appendFormat(INDENT3 "TapSlop: %0.1fpx\n",
mConfig.pointerGestureTapSlop);
dump.appendFormat(INDENT3 "MultitouchSettleInterval: %0.1fms\n",
mConfig.pointerGestureMultitouchSettleInterval * 0.000001f);
dump.appendFormat(INDENT3 "MultitouchMinDistance: %0.1fpx\n",
mConfig.pointerGestureMultitouchMinDistance);
dump.appendFormat(INDENT3 "SwipeTransitionAngleCosine: %0.1f\n",
mConfig.pointerGestureSwipeTransitionAngleCosine);
dump.appendFormat(INDENT3 "SwipeMaxWidthRatio: %0.1f\n",
mConfig.pointerGestureSwipeMaxWidthRatio);
dump.appendFormat(INDENT3 "MovementSpeedRatio: %0.1f\n",
mConfig.pointerGestureMovementSpeedRatio);
dump.appendFormat(INDENT3 "ZoomSpeedRatio: %0.1f\n",
mConfig.pointerGestureZoomSpeedRatio);
}
void InputReader::monitor() {
// Acquire and release the lock to ensure that the reader has not deadlocked.
mLock.lock();
mEventHub->wake();
mReaderIsAliveCondition.wait(mLock);
mLock.unlock();
// Check the EventHub
mEventHub->monitor();
}
// --- InputReader::ContextImpl ---
InputReader::ContextImpl::ContextImpl(InputReader* reader) :
mReader(reader) {
}
void InputReader::ContextImpl::updateGlobalMetaState() {
// lock is already held by the input loop
mReader->updateGlobalMetaStateLocked();
}
int32_t InputReader::ContextImpl::getGlobalMetaState() {
// lock is already held by the input loop
return mReader->getGlobalMetaStateLocked();
}
void InputReader::ContextImpl::disableVirtualKeysUntil(nsecs_t time) {
// lock is already held by the input loop
mReader->disableVirtualKeysUntilLocked(time);
}
bool InputReader::ContextImpl::shouldDropVirtualKey(nsecs_t now,
InputDevice* device, int32_t keyCode, int32_t scanCode) {
// lock is already held by the input loop
return mReader->shouldDropVirtualKeyLocked(now, device, keyCode, scanCode);
}
void InputReader::ContextImpl::fadePointer() {
// lock is already held by the input loop
mReader->fadePointerLocked();
}
void InputReader::ContextImpl::requestTimeoutAtTime(nsecs_t when) {
// lock is already held by the input loop
mReader->requestTimeoutAtTimeLocked(when);
}
int32_t InputReader::ContextImpl::bumpGeneration() {
// lock is already held by the input loop
return mReader->bumpGenerationLocked();
}
InputReaderPolicyInterface* InputReader::ContextImpl::getPolicy() {
return mReader->mPolicy.get();
}
InputListenerInterface* InputReader::ContextImpl::getListener() {
return mReader->mQueuedListener.get();
}
EventHubInterface* InputReader::ContextImpl::getEventHub() {
return mReader->mEventHub.get();
}
// --- InputReaderThread ---
InputReaderThread::InputReaderThread(const sp<InputReaderInterface>& reader) :
Thread(/*canCallJava*/ true), mReader(reader) {
}
InputReaderThread::~InputReaderThread() {
}
bool InputReaderThread::threadLoop() {
mReader->loopOnce();
return true;
}
// --- InputDevice ---
InputDevice::InputDevice(InputReaderContext* context, int32_t id, int32_t generation,
int32_t controllerNumber, const InputDeviceIdentifier& identifier, uint32_t classes) :
mContext(context), mId(id), mGeneration(generation), mControllerNumber(controllerNumber),
mIdentifier(identifier), mClasses(classes),
mSources(0), mIsExternal(false), mDropUntilNextSync(false) {
}
InputDevice::~InputDevice() {
size_t numMappers = mMappers.size();
for (size_t i = 0; i < numMappers; i++) {
delete mMappers[i];
}
mMappers.clear();
}
void InputDevice::dump(String8& dump) {
InputDeviceInfo deviceInfo;
getDeviceInfo(& deviceInfo);
dump.appendFormat(INDENT "Device %d: %s\n", deviceInfo.getId(),
deviceInfo.getDisplayName().string());
dump.appendFormat(INDENT2 "Generation: %d\n", mGeneration);
dump.appendFormat(INDENT2 "IsExternal: %s\n", toString(mIsExternal));
dump.appendFormat(INDENT2 "Sources: 0x%08x\n", deviceInfo.getSources());
dump.appendFormat(INDENT2 "KeyboardType: %d\n", deviceInfo.getKeyboardType());
const Vector<InputDeviceInfo::MotionRange>& ranges = deviceInfo.getMotionRanges();
if (!ranges.isEmpty()) {
dump.append(INDENT2 "Motion Ranges:\n");
for (size_t i = 0; i < ranges.size(); i++) {
const InputDeviceInfo::MotionRange& range = ranges.itemAt(i);
const char* label = getAxisLabel(range.axis);
char name[32];
if (label) {
strncpy(name, label, sizeof(name));
name[sizeof(name) - 1] = '\0';
} else {
snprintf(name, sizeof(name), "%d", range.axis);
}
dump.appendFormat(INDENT3 "%s: source=0x%08x, "
"min=%0.3f, max=%0.3f, flat=%0.3f, fuzz=%0.3f, resolution=%0.3f\n",
name, range.source, range.min, range.max, range.flat, range.fuzz,
range.resolution);
}
}
size_t numMappers = mMappers.size();
for (size_t i = 0; i < numMappers; i++) {
InputMapper* mapper = mMappers[i];
mapper->dump(dump);
}
}
void InputDevice::addMapper(InputMapper* mapper) {
mMappers.add(mapper);
}
void InputDevice::configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes) {
mSources = 0;
if (!isIgnored()) {
if (!changes) { // first time only
mContext->getEventHub()->getConfiguration(mId, &mConfiguration);
}
if (!changes || (changes & InputReaderConfiguration::CHANGE_KEYBOARD_LAYOUTS)) {
if (!(mClasses & INPUT_DEVICE_CLASS_VIRTUAL)) {
sp<KeyCharacterMap> keyboardLayout =
mContext->getPolicy()->getKeyboardLayoutOverlay(mIdentifier.descriptor);
if (mContext->getEventHub()->setKeyboardLayoutOverlay(mId, keyboardLayout)) {
bumpGeneration();
}
}
}
if (!changes || (changes & InputReaderConfiguration::CHANGE_DEVICE_ALIAS)) {
if (!(mClasses & INPUT_DEVICE_CLASS_VIRTUAL)) {
String8 alias = mContext->getPolicy()->getDeviceAlias(mIdentifier);
if (mAlias != alias) {
mAlias = alias;
bumpGeneration();
}
}
}
size_t numMappers = mMappers.size();
for (size_t i = 0; i < numMappers; i++) {
InputMapper* mapper = mMappers[i];
mapper->configure(when, config, changes);
mSources |= mapper->getSources();
}
}
}
void InputDevice::reset(nsecs_t when) {
size_t numMappers = mMappers.size();
for (size_t i = 0; i < numMappers; i++) {
InputMapper* mapper = mMappers[i];
mapper->reset(when);
}
mContext->updateGlobalMetaState();
notifyReset(when);
}
void InputDevice::process(const RawEvent* rawEvents, size_t count) {
// Process all of the events in order for each mapper.
// We cannot simply ask each mapper to process them in bulk because mappers may
// have side-effects that must be interleaved. For example, joystick movement events and
// gamepad button presses are handled by different mappers but they should be dispatched
// in the order received.
size_t numMappers = mMappers.size();
for (const RawEvent* rawEvent = rawEvents; count--; rawEvent++) {
#if DEBUG_RAW_EVENTS
ALOGD("Input event: device=%d type=0x%04x code=0x%04x value=0x%08x when=%lld",
rawEvent->deviceId, rawEvent->type, rawEvent->code, rawEvent->value,
rawEvent->when);
#endif
if (mDropUntilNextSync) {
if (rawEvent->type == EV_SYN && rawEvent->code == SYN_REPORT) {
mDropUntilNextSync = false;
#if DEBUG_RAW_EVENTS
ALOGD("Recovered from input event buffer overrun.");
#endif
} else {
#if DEBUG_RAW_EVENTS
ALOGD("Dropped input event while waiting for next input sync.");
#endif
}
} else if (rawEvent->type == EV_SYN && rawEvent->code == SYN_DROPPED) {
ALOGI("Detected input event buffer overrun for device %s.", getName().string());
mDropUntilNextSync = true;
reset(rawEvent->when);
} else {
for (size_t i = 0; i < numMappers; i++) {
InputMapper* mapper = mMappers[i];
mapper->process(rawEvent);
}
}
}
}
void InputDevice::timeoutExpired(nsecs_t when) {
size_t numMappers = mMappers.size();
for (size_t i = 0; i < numMappers; i++) {
InputMapper* mapper = mMappers[i];
mapper->timeoutExpired(when);
}
}
void InputDevice::getDeviceInfo(InputDeviceInfo* outDeviceInfo) {
outDeviceInfo->initialize(mId, mGeneration, mControllerNumber, mIdentifier, mAlias,
mIsExternal);