| /* |
| * Copyright (C) 2008 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 "KeyLayoutMap" |
| |
| #include <android/keycodes.h> |
| #include <ftl/enum.h> |
| #include <input/InputEventLabels.h> |
| #include <input/KeyLayoutMap.h> |
| #include <input/Keyboard.h> |
| #include <log/log.h> |
| #include <utils/Errors.h> |
| #include <utils/Timers.h> |
| #include <utils/Tokenizer.h> |
| #if defined(__ANDROID__) |
| #include <vintf/RuntimeInfo.h> |
| #include <vintf/VintfObject.h> |
| #endif |
| |
| #include <cstdlib> |
| #include <string_view> |
| #include <unordered_map> |
| |
| /** |
| * Log debug output for the parser. |
| * Enable this via "adb shell setprop log.tag.KeyLayoutMapParser DEBUG" (requires restart) |
| */ |
| const bool DEBUG_PARSER = |
| __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Parser", ANDROID_LOG_INFO); |
| |
| // Enables debug output for parser performance. |
| #define DEBUG_PARSER_PERFORMANCE 0 |
| |
| /** |
| * Log debug output for mapping. |
| * Enable this via "adb shell setprop log.tag.KeyLayoutMapMapping DEBUG" (requires restart) |
| */ |
| const bool DEBUG_MAPPING = |
| __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Mapping", ANDROID_LOG_INFO); |
| |
| namespace android { |
| namespace { |
| |
| constexpr const char* WHITESPACE = " \t\r"; |
| |
| template <InputDeviceSensorType S> |
| constexpr auto sensorPair() { |
| return std::make_pair(ftl::enum_name<S>(), S); |
| } |
| |
| static const std::unordered_map<std::string_view, InputDeviceSensorType> SENSOR_LIST = |
| {sensorPair<InputDeviceSensorType::ACCELEROMETER>(), |
| sensorPair<InputDeviceSensorType::MAGNETIC_FIELD>(), |
| sensorPair<InputDeviceSensorType::ORIENTATION>(), |
| sensorPair<InputDeviceSensorType::GYROSCOPE>(), |
| sensorPair<InputDeviceSensorType::LIGHT>(), |
| sensorPair<InputDeviceSensorType::PRESSURE>(), |
| sensorPair<InputDeviceSensorType::TEMPERATURE>(), |
| sensorPair<InputDeviceSensorType::PROXIMITY>(), |
| sensorPair<InputDeviceSensorType::GRAVITY>(), |
| sensorPair<InputDeviceSensorType::LINEAR_ACCELERATION>(), |
| sensorPair<InputDeviceSensorType::ROTATION_VECTOR>(), |
| sensorPair<InputDeviceSensorType::RELATIVE_HUMIDITY>(), |
| sensorPair<InputDeviceSensorType::AMBIENT_TEMPERATURE>(), |
| sensorPair<InputDeviceSensorType::MAGNETIC_FIELD_UNCALIBRATED>(), |
| sensorPair<InputDeviceSensorType::GAME_ROTATION_VECTOR>(), |
| sensorPair<InputDeviceSensorType::GYROSCOPE_UNCALIBRATED>(), |
| sensorPair<InputDeviceSensorType::SIGNIFICANT_MOTION>()}; |
| |
| bool kernelConfigsArePresent(const std::set<std::string>& configs) { |
| #if defined(__ANDROID__) |
| std::shared_ptr<const android::vintf::RuntimeInfo> runtimeInfo = |
| android::vintf::VintfObject::GetInstance()->getRuntimeInfo( |
| vintf::RuntimeInfo::FetchFlag::CONFIG_GZ); |
| LOG_ALWAYS_FATAL_IF(runtimeInfo == nullptr, "Kernel configs could not be fetched"); |
| |
| const std::map<std::string, std::string>& kernelConfigs = runtimeInfo->kernelConfigs(); |
| for (const std::string& requiredConfig : configs) { |
| const auto configIt = kernelConfigs.find(requiredConfig); |
| if (configIt == kernelConfigs.end()) { |
| ALOGI("Required kernel config %s is not found", requiredConfig.c_str()); |
| return false; |
| } |
| const std::string& option = configIt->second; |
| if (option != "y" && option != "m") { |
| ALOGI("Required kernel config %s has option %s", requiredConfig.c_str(), |
| option.c_str()); |
| return false; |
| } |
| } |
| return true; |
| #else |
| (void)configs; // Suppress 'unused variable' warning |
| return true; |
| #endif |
| } |
| |
| } // namespace |
| |
| KeyLayoutMap::KeyLayoutMap() = default; |
| KeyLayoutMap::~KeyLayoutMap() = default; |
| |
| base::Result<std::shared_ptr<KeyLayoutMap>> KeyLayoutMap::loadContents(const std::string& filename, |
| const char* contents) { |
| return load(filename, contents); |
| } |
| |
| base::Result<std::shared_ptr<KeyLayoutMap>> KeyLayoutMap::load(const std::string& filename, |
| const char* contents) { |
| Tokenizer* tokenizer; |
| status_t status; |
| if (contents == nullptr) { |
| status = Tokenizer::open(String8(filename.c_str()), &tokenizer); |
| } else { |
| status = Tokenizer::fromContents(String8(filename.c_str()), contents, &tokenizer); |
| } |
| if (status) { |
| ALOGE("Error %d opening key layout map file %s.", status, filename.c_str()); |
| return Errorf("Error {} opening key layout map file {}.", status, filename.c_str()); |
| } |
| std::unique_ptr<Tokenizer> t(tokenizer); |
| auto ret = load(t.get()); |
| if (!ret.ok()) { |
| return ret; |
| } |
| const std::shared_ptr<KeyLayoutMap>& map = *ret; |
| LOG_ALWAYS_FATAL_IF(map == nullptr, "Returned map should not be null if there's no error"); |
| if (!kernelConfigsArePresent(map->mRequiredKernelConfigs)) { |
| ALOGI("Not loading %s because the required kernel configs are not set", filename.c_str()); |
| return Errorf("Missing kernel config"); |
| } |
| map->mLoadFileName = filename; |
| return ret; |
| } |
| |
| base::Result<std::shared_ptr<KeyLayoutMap>> KeyLayoutMap::load(Tokenizer* tokenizer) { |
| std::shared_ptr<KeyLayoutMap> map = std::shared_ptr<KeyLayoutMap>(new KeyLayoutMap()); |
| status_t status = OK; |
| if (!map.get()) { |
| ALOGE("Error allocating key layout map."); |
| return Errorf("Error allocating key layout map."); |
| } else { |
| #if DEBUG_PARSER_PERFORMANCE |
| nsecs_t startTime = systemTime(SYSTEM_TIME_MONOTONIC); |
| #endif |
| Parser parser(map.get(), tokenizer); |
| status = parser.parse(); |
| #if DEBUG_PARSER_PERFORMANCE |
| nsecs_t elapsedTime = systemTime(SYSTEM_TIME_MONOTONIC) - startTime; |
| ALOGD("Parsed key layout map file '%s' %d lines in %0.3fms.", |
| tokenizer->getFilename().string(), tokenizer->getLineNumber(), |
| elapsedTime / 1000000.0); |
| #endif |
| if (!status) { |
| return std::move(map); |
| } |
| } |
| return Errorf("Load KeyLayoutMap failed {}.", status); |
| } |
| |
| status_t KeyLayoutMap::mapKey(int32_t scanCode, int32_t usageCode, |
| int32_t* outKeyCode, uint32_t* outFlags) const { |
| const Key* key = getKey(scanCode, usageCode); |
| if (!key) { |
| ALOGD_IF(DEBUG_MAPPING, "mapKey: scanCode=%d, usageCode=0x%08x ~ Failed.", scanCode, |
| usageCode); |
| *outKeyCode = AKEYCODE_UNKNOWN; |
| *outFlags = 0; |
| return NAME_NOT_FOUND; |
| } |
| |
| *outKeyCode = key->keyCode; |
| *outFlags = key->flags; |
| |
| ALOGD_IF(DEBUG_MAPPING, |
| "mapKey: scanCode=%d, usageCode=0x%08x ~ Result keyCode=%d, outFlags=0x%08x.", |
| scanCode, usageCode, *outKeyCode, *outFlags); |
| return NO_ERROR; |
| } |
| |
| // Return pair of sensor type and sensor data index, for the input device abs code |
| base::Result<std::pair<InputDeviceSensorType, int32_t>> KeyLayoutMap::mapSensor(int32_t absCode) { |
| auto it = mSensorsByAbsCode.find(absCode); |
| if (it == mSensorsByAbsCode.end()) { |
| ALOGD_IF(DEBUG_MAPPING, "mapSensor: absCode=%d, ~ Failed.", absCode); |
| return Errorf("Can't find abs code {}.", absCode); |
| } |
| const Sensor& sensor = it->second; |
| ALOGD_IF(DEBUG_MAPPING, "mapSensor: absCode=%d, sensorType=%s, sensorDataIndex=0x%x.", absCode, |
| ftl::enum_string(sensor.sensorType).c_str(), sensor.sensorDataIndex); |
| return std::make_pair(sensor.sensorType, sensor.sensorDataIndex); |
| } |
| |
| const KeyLayoutMap::Key* KeyLayoutMap::getKey(int32_t scanCode, int32_t usageCode) const { |
| if (usageCode) { |
| auto it = mKeysByUsageCode.find(usageCode); |
| if (it != mKeysByUsageCode.end()) { |
| return &it->second; |
| } |
| } |
| if (scanCode) { |
| auto it = mKeysByScanCode.find(scanCode); |
| if (it != mKeysByScanCode.end()) { |
| return &it->second; |
| } |
| } |
| return nullptr; |
| } |
| |
| std::vector<int32_t> KeyLayoutMap::findScanCodesForKey(int32_t keyCode) const { |
| std::vector<int32_t> scanCodes; |
| for (const auto& [scanCode, key] : mKeysByScanCode) { |
| if (keyCode == key.keyCode) { |
| scanCodes.push_back(scanCode); |
| } |
| } |
| return scanCodes; |
| } |
| |
| std::optional<AxisInfo> KeyLayoutMap::mapAxis(int32_t scanCode) const { |
| auto it = mAxes.find(scanCode); |
| if (it == mAxes.end()) { |
| ALOGD_IF(DEBUG_MAPPING, "mapAxis: scanCode=%d ~ Failed.", scanCode); |
| return std::nullopt; |
| } |
| |
| const AxisInfo& axisInfo = it->second; |
| ALOGD_IF(DEBUG_MAPPING, |
| "mapAxis: scanCode=%d ~ Result mode=%d, axis=%d, highAxis=%d, " |
| "splitValue=%d, flatOverride=%d.", |
| scanCode, axisInfo.mode, axisInfo.axis, axisInfo.highAxis, axisInfo.splitValue, |
| axisInfo.flatOverride); |
| return axisInfo; |
| } |
| |
| std::optional<int32_t> KeyLayoutMap::findScanCodeForLed(int32_t ledCode) const { |
| for (const auto& [scanCode, led] : mLedsByScanCode) { |
| if (led.ledCode == ledCode) { |
| ALOGD_IF(DEBUG_MAPPING, "%s: ledCode=%d, scanCode=%d.", __func__, ledCode, scanCode); |
| return scanCode; |
| } |
| } |
| ALOGD_IF(DEBUG_MAPPING, "%s: ledCode=%d ~ Not found.", __func__, ledCode); |
| return std::nullopt; |
| } |
| |
| std::optional<int32_t> KeyLayoutMap::findUsageCodeForLed(int32_t ledCode) const { |
| for (const auto& [usageCode, led] : mLedsByUsageCode) { |
| if (led.ledCode == ledCode) { |
| ALOGD_IF(DEBUG_MAPPING, "%s: ledCode=%d, usage=%x.", __func__, ledCode, usageCode); |
| return usageCode; |
| } |
| } |
| ALOGD_IF(DEBUG_MAPPING, "%s: ledCode=%d ~ Not found.", __func__, ledCode); |
| return std::nullopt; |
| } |
| |
| // --- KeyLayoutMap::Parser --- |
| |
| KeyLayoutMap::Parser::Parser(KeyLayoutMap* map, Tokenizer* tokenizer) : |
| mMap(map), mTokenizer(tokenizer) { |
| } |
| |
| KeyLayoutMap::Parser::~Parser() { |
| } |
| |
| status_t KeyLayoutMap::Parser::parse() { |
| while (!mTokenizer->isEof()) { |
| ALOGD_IF(DEBUG_PARSER, "Parsing %s: '%s'.", mTokenizer->getLocation().string(), |
| mTokenizer->peekRemainderOfLine().string()); |
| |
| mTokenizer->skipDelimiters(WHITESPACE); |
| |
| if (!mTokenizer->isEol() && mTokenizer->peekChar() != '#') { |
| String8 keywordToken = mTokenizer->nextToken(WHITESPACE); |
| if (keywordToken == "key") { |
| mTokenizer->skipDelimiters(WHITESPACE); |
| status_t status = parseKey(); |
| if (status) return status; |
| } else if (keywordToken == "axis") { |
| mTokenizer->skipDelimiters(WHITESPACE); |
| status_t status = parseAxis(); |
| if (status) return status; |
| } else if (keywordToken == "led") { |
| mTokenizer->skipDelimiters(WHITESPACE); |
| status_t status = parseLed(); |
| if (status) return status; |
| } else if (keywordToken == "sensor") { |
| mTokenizer->skipDelimiters(WHITESPACE); |
| status_t status = parseSensor(); |
| if (status) return status; |
| } else if (keywordToken == "requires_kernel_config") { |
| mTokenizer->skipDelimiters(WHITESPACE); |
| status_t status = parseRequiredKernelConfig(); |
| if (status) return status; |
| } else { |
| ALOGE("%s: Expected keyword, got '%s'.", mTokenizer->getLocation().string(), |
| keywordToken.string()); |
| return BAD_VALUE; |
| } |
| |
| mTokenizer->skipDelimiters(WHITESPACE); |
| if (!mTokenizer->isEol() && mTokenizer->peekChar() != '#') { |
| ALOGE("%s: Expected end of line or trailing comment, got '%s'.", |
| mTokenizer->getLocation().string(), |
| mTokenizer->peekRemainderOfLine().string()); |
| return BAD_VALUE; |
| } |
| } |
| |
| mTokenizer->nextLine(); |
| } |
| return NO_ERROR; |
| } |
| |
| status_t KeyLayoutMap::Parser::parseKey() { |
| String8 codeToken = mTokenizer->nextToken(WHITESPACE); |
| bool mapUsage = false; |
| if (codeToken == "usage") { |
| mapUsage = true; |
| mTokenizer->skipDelimiters(WHITESPACE); |
| codeToken = mTokenizer->nextToken(WHITESPACE); |
| } |
| |
| char* end; |
| int32_t code = int32_t(strtol(codeToken.string(), &end, 0)); |
| if (*end) { |
| ALOGE("%s: Expected key %s number, got '%s'.", mTokenizer->getLocation().string(), |
| mapUsage ? "usage" : "scan code", codeToken.string()); |
| return BAD_VALUE; |
| } |
| std::unordered_map<int32_t, Key>& map = |
| mapUsage ? mMap->mKeysByUsageCode : mMap->mKeysByScanCode; |
| if (map.find(code) != map.end()) { |
| ALOGE("%s: Duplicate entry for key %s '%s'.", mTokenizer->getLocation().string(), |
| mapUsage ? "usage" : "scan code", codeToken.string()); |
| return BAD_VALUE; |
| } |
| |
| mTokenizer->skipDelimiters(WHITESPACE); |
| String8 keyCodeToken = mTokenizer->nextToken(WHITESPACE); |
| int32_t keyCode = InputEventLookup::getKeyCodeByLabel(keyCodeToken.string()); |
| if (!keyCode) { |
| ALOGE("%s: Expected key code label, got '%s'.", mTokenizer->getLocation().string(), |
| keyCodeToken.string()); |
| return BAD_VALUE; |
| } |
| |
| uint32_t flags = 0; |
| for (;;) { |
| mTokenizer->skipDelimiters(WHITESPACE); |
| if (mTokenizer->isEol() || mTokenizer->peekChar() == '#') break; |
| |
| String8 flagToken = mTokenizer->nextToken(WHITESPACE); |
| uint32_t flag = InputEventLookup::getKeyFlagByLabel(flagToken.string()); |
| if (!flag) { |
| ALOGE("%s: Expected key flag label, got '%s'.", mTokenizer->getLocation().string(), |
| flagToken.string()); |
| return BAD_VALUE; |
| } |
| if (flags & flag) { |
| ALOGE("%s: Duplicate key flag '%s'.", mTokenizer->getLocation().string(), |
| flagToken.string()); |
| return BAD_VALUE; |
| } |
| flags |= flag; |
| } |
| |
| ALOGD_IF(DEBUG_PARSER, "Parsed key %s: code=%d, keyCode=%d, flags=0x%08x.", |
| mapUsage ? "usage" : "scan code", code, keyCode, flags); |
| |
| Key key; |
| key.keyCode = keyCode; |
| key.flags = flags; |
| map.insert({code, key}); |
| return NO_ERROR; |
| } |
| |
| status_t KeyLayoutMap::Parser::parseAxis() { |
| String8 scanCodeToken = mTokenizer->nextToken(WHITESPACE); |
| char* end; |
| int32_t scanCode = int32_t(strtol(scanCodeToken.string(), &end, 0)); |
| if (*end) { |
| ALOGE("%s: Expected axis scan code number, got '%s'.", mTokenizer->getLocation().string(), |
| scanCodeToken.string()); |
| return BAD_VALUE; |
| } |
| if (mMap->mAxes.find(scanCode) != mMap->mAxes.end()) { |
| ALOGE("%s: Duplicate entry for axis scan code '%s'.", mTokenizer->getLocation().string(), |
| scanCodeToken.string()); |
| return BAD_VALUE; |
| } |
| |
| AxisInfo axisInfo; |
| |
| mTokenizer->skipDelimiters(WHITESPACE); |
| String8 token = mTokenizer->nextToken(WHITESPACE); |
| if (token == "invert") { |
| axisInfo.mode = AxisInfo::MODE_INVERT; |
| |
| mTokenizer->skipDelimiters(WHITESPACE); |
| String8 axisToken = mTokenizer->nextToken(WHITESPACE); |
| axisInfo.axis = InputEventLookup::getAxisByLabel(axisToken.string()); |
| if (axisInfo.axis < 0) { |
| ALOGE("%s: Expected inverted axis label, got '%s'.", |
| mTokenizer->getLocation().string(), axisToken.string()); |
| return BAD_VALUE; |
| } |
| } else if (token == "split") { |
| axisInfo.mode = AxisInfo::MODE_SPLIT; |
| |
| mTokenizer->skipDelimiters(WHITESPACE); |
| String8 splitToken = mTokenizer->nextToken(WHITESPACE); |
| axisInfo.splitValue = int32_t(strtol(splitToken.string(), &end, 0)); |
| if (*end) { |
| ALOGE("%s: Expected split value, got '%s'.", |
| mTokenizer->getLocation().string(), splitToken.string()); |
| return BAD_VALUE; |
| } |
| |
| mTokenizer->skipDelimiters(WHITESPACE); |
| String8 lowAxisToken = mTokenizer->nextToken(WHITESPACE); |
| axisInfo.axis = InputEventLookup::getAxisByLabel(lowAxisToken.string()); |
| if (axisInfo.axis < 0) { |
| ALOGE("%s: Expected low axis label, got '%s'.", |
| mTokenizer->getLocation().string(), lowAxisToken.string()); |
| return BAD_VALUE; |
| } |
| |
| mTokenizer->skipDelimiters(WHITESPACE); |
| String8 highAxisToken = mTokenizer->nextToken(WHITESPACE); |
| axisInfo.highAxis = InputEventLookup::getAxisByLabel(highAxisToken.string()); |
| if (axisInfo.highAxis < 0) { |
| ALOGE("%s: Expected high axis label, got '%s'.", |
| mTokenizer->getLocation().string(), highAxisToken.string()); |
| return BAD_VALUE; |
| } |
| } else { |
| axisInfo.axis = InputEventLookup::getAxisByLabel(token.string()); |
| if (axisInfo.axis < 0) { |
| ALOGE("%s: Expected axis label, 'split' or 'invert', got '%s'.", |
| mTokenizer->getLocation().string(), token.string()); |
| return BAD_VALUE; |
| } |
| } |
| |
| for (;;) { |
| mTokenizer->skipDelimiters(WHITESPACE); |
| if (mTokenizer->isEol() || mTokenizer->peekChar() == '#') { |
| break; |
| } |
| String8 keywordToken = mTokenizer->nextToken(WHITESPACE); |
| if (keywordToken == "flat") { |
| mTokenizer->skipDelimiters(WHITESPACE); |
| String8 flatToken = mTokenizer->nextToken(WHITESPACE); |
| axisInfo.flatOverride = int32_t(strtol(flatToken.string(), &end, 0)); |
| if (*end) { |
| ALOGE("%s: Expected flat value, got '%s'.", |
| mTokenizer->getLocation().string(), flatToken.string()); |
| return BAD_VALUE; |
| } |
| } else { |
| ALOGE("%s: Expected keyword 'flat', got '%s'.", |
| mTokenizer->getLocation().string(), keywordToken.string()); |
| return BAD_VALUE; |
| } |
| } |
| |
| ALOGD_IF(DEBUG_PARSER, |
| "Parsed axis: scanCode=%d, mode=%d, axis=%d, highAxis=%d, " |
| "splitValue=%d, flatOverride=%d.", |
| scanCode, axisInfo.mode, axisInfo.axis, axisInfo.highAxis, axisInfo.splitValue, |
| axisInfo.flatOverride); |
| mMap->mAxes.insert({scanCode, axisInfo}); |
| return NO_ERROR; |
| } |
| |
| status_t KeyLayoutMap::Parser::parseLed() { |
| String8 codeToken = mTokenizer->nextToken(WHITESPACE); |
| bool mapUsage = false; |
| if (codeToken == "usage") { |
| mapUsage = true; |
| mTokenizer->skipDelimiters(WHITESPACE); |
| codeToken = mTokenizer->nextToken(WHITESPACE); |
| } |
| char* end; |
| int32_t code = int32_t(strtol(codeToken.string(), &end, 0)); |
| if (*end) { |
| ALOGE("%s: Expected led %s number, got '%s'.", mTokenizer->getLocation().string(), |
| mapUsage ? "usage" : "scan code", codeToken.string()); |
| return BAD_VALUE; |
| } |
| |
| std::unordered_map<int32_t, Led>& map = |
| mapUsage ? mMap->mLedsByUsageCode : mMap->mLedsByScanCode; |
| if (map.find(code) != map.end()) { |
| ALOGE("%s: Duplicate entry for led %s '%s'.", mTokenizer->getLocation().string(), |
| mapUsage ? "usage" : "scan code", codeToken.string()); |
| return BAD_VALUE; |
| } |
| |
| mTokenizer->skipDelimiters(WHITESPACE); |
| String8 ledCodeToken = mTokenizer->nextToken(WHITESPACE); |
| int32_t ledCode = InputEventLookup::getLedByLabel(ledCodeToken.string()); |
| if (ledCode < 0) { |
| ALOGE("%s: Expected LED code label, got '%s'.", mTokenizer->getLocation().string(), |
| ledCodeToken.string()); |
| return BAD_VALUE; |
| } |
| |
| ALOGD_IF(DEBUG_PARSER, "Parsed led %s: code=%d, ledCode=%d.", mapUsage ? "usage" : "scan code", |
| code, ledCode); |
| |
| Led led; |
| led.ledCode = ledCode; |
| map.insert({code, led}); |
| return NO_ERROR; |
| } |
| |
| static std::optional<InputDeviceSensorType> getSensorType(const char* token) { |
| auto it = SENSOR_LIST.find(token); |
| if (it == SENSOR_LIST.end()) { |
| return std::nullopt; |
| } |
| return it->second; |
| } |
| |
| static std::optional<int32_t> getSensorDataIndex(String8 token) { |
| std::string tokenStr(token.string()); |
| if (tokenStr == "X") { |
| return 0; |
| } else if (tokenStr == "Y") { |
| return 1; |
| } else if (tokenStr == "Z") { |
| return 2; |
| } |
| return std::nullopt; |
| } |
| |
| // Parse sensor type and data index mapping, as below format |
| // sensor <raw abs> <sensor type> <sensor data index> |
| // raw abs : the linux abs code of the axis |
| // sensor type : string name of InputDeviceSensorType |
| // sensor data index : the data index of sensor, out of [X, Y, Z] |
| // Examples: |
| // sensor 0x00 ACCELEROMETER X |
| // sensor 0x01 ACCELEROMETER Y |
| // sensor 0x02 ACCELEROMETER Z |
| // sensor 0x03 GYROSCOPE X |
| // sensor 0x04 GYROSCOPE Y |
| // sensor 0x05 GYROSCOPE Z |
| status_t KeyLayoutMap::Parser::parseSensor() { |
| String8 codeToken = mTokenizer->nextToken(WHITESPACE); |
| char* end; |
| int32_t code = int32_t(strtol(codeToken.string(), &end, 0)); |
| if (*end) { |
| ALOGE("%s: Expected sensor %s number, got '%s'.", mTokenizer->getLocation().string(), |
| "abs code", codeToken.string()); |
| return BAD_VALUE; |
| } |
| |
| std::unordered_map<int32_t, Sensor>& map = mMap->mSensorsByAbsCode; |
| if (map.find(code) != map.end()) { |
| ALOGE("%s: Duplicate entry for sensor %s '%s'.", mTokenizer->getLocation().string(), |
| "abs code", codeToken.string()); |
| return BAD_VALUE; |
| } |
| |
| mTokenizer->skipDelimiters(WHITESPACE); |
| String8 sensorTypeToken = mTokenizer->nextToken(WHITESPACE); |
| std::optional<InputDeviceSensorType> typeOpt = getSensorType(sensorTypeToken.string()); |
| if (!typeOpt) { |
| ALOGE("%s: Expected sensor code label, got '%s'.", mTokenizer->getLocation().string(), |
| sensorTypeToken.string()); |
| return BAD_VALUE; |
| } |
| InputDeviceSensorType sensorType = typeOpt.value(); |
| mTokenizer->skipDelimiters(WHITESPACE); |
| String8 sensorDataIndexToken = mTokenizer->nextToken(WHITESPACE); |
| std::optional<int32_t> indexOpt = getSensorDataIndex(sensorDataIndexToken); |
| if (!indexOpt) { |
| ALOGE("%s: Expected sensor data index label, got '%s'.", mTokenizer->getLocation().string(), |
| sensorDataIndexToken.string()); |
| return BAD_VALUE; |
| } |
| int32_t sensorDataIndex = indexOpt.value(); |
| |
| ALOGD_IF(DEBUG_PARSER, "Parsed sensor: abs code=%d, sensorType=%s, sensorDataIndex=%d.", code, |
| ftl::enum_string(sensorType).c_str(), sensorDataIndex); |
| |
| Sensor sensor; |
| sensor.sensorType = sensorType; |
| sensor.sensorDataIndex = sensorDataIndex; |
| map.emplace(code, sensor); |
| return NO_ERROR; |
| } |
| |
| // Parse the name of a required kernel config. |
| // The layout won't be used if the specified kernel config is not present |
| // Examples: |
| // requires_kernel_config CONFIG_HID_PLAYSTATION |
| status_t KeyLayoutMap::Parser::parseRequiredKernelConfig() { |
| String8 codeToken = mTokenizer->nextToken(WHITESPACE); |
| std::string configName = codeToken.string(); |
| |
| const auto result = mMap->mRequiredKernelConfigs.emplace(configName); |
| if (!result.second) { |
| ALOGE("%s: Duplicate entry for required kernel config %s.", |
| mTokenizer->getLocation().string(), configName.c_str()); |
| return BAD_VALUE; |
| } |
| |
| ALOGD_IF(DEBUG_PARSER, "Parsed required kernel config: name=%s", configName.c_str()); |
| return NO_ERROR; |
| } |
| |
| } // namespace android |