1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "Macros.h"
18
19 #include "SwitchInputMapper.h"
20
21 namespace android {
22
SwitchInputMapper(InputDevice * device)23 SwitchInputMapper::SwitchInputMapper(InputDevice* device)
24 : InputMapper(device), mSwitchValues(0), mUpdatedSwitchMask(0) {}
25
~SwitchInputMapper()26 SwitchInputMapper::~SwitchInputMapper() {}
27
getSources()28 uint32_t SwitchInputMapper::getSources() {
29 return AINPUT_SOURCE_SWITCH;
30 }
31
process(const RawEvent * rawEvent)32 void SwitchInputMapper::process(const RawEvent* rawEvent) {
33 switch (rawEvent->type) {
34 case EV_SW:
35 processSwitch(rawEvent->code, rawEvent->value);
36 break;
37
38 case EV_SYN:
39 if (rawEvent->code == SYN_REPORT) {
40 sync(rawEvent->when);
41 }
42 }
43 }
44
processSwitch(int32_t switchCode,int32_t switchValue)45 void SwitchInputMapper::processSwitch(int32_t switchCode, int32_t switchValue) {
46 if (switchCode >= 0 && switchCode < 32) {
47 if (switchValue) {
48 mSwitchValues |= 1 << switchCode;
49 } else {
50 mSwitchValues &= ~(1 << switchCode);
51 }
52 mUpdatedSwitchMask |= 1 << switchCode;
53 }
54 }
55
sync(nsecs_t when)56 void SwitchInputMapper::sync(nsecs_t when) {
57 if (mUpdatedSwitchMask) {
58 uint32_t updatedSwitchValues = mSwitchValues & mUpdatedSwitchMask;
59 NotifySwitchArgs args(mContext->getNextSequenceNum(), when, 0, updatedSwitchValues,
60 mUpdatedSwitchMask);
61 getListener()->notifySwitch(&args);
62
63 mUpdatedSwitchMask = 0;
64 }
65 }
66
getSwitchState(uint32_t sourceMask,int32_t switchCode)67 int32_t SwitchInputMapper::getSwitchState(uint32_t sourceMask, int32_t switchCode) {
68 return getEventHub()->getSwitchState(getDeviceId(), switchCode);
69 }
70
dump(std::string & dump)71 void SwitchInputMapper::dump(std::string& dump) {
72 dump += INDENT2 "Switch Input Mapper:\n";
73 dump += StringPrintf(INDENT3 "SwitchValues: %x\n", mSwitchValues);
74 }
75
76 } // namespace android
77