| /* |
| * 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 <stdlib.h> |
| |
| #include <android/keycodes.h> |
| #include <input/InputEventLabels.h> |
| #include <input/Keyboard.h> |
| #include <input/KeyLayoutMap.h> |
| #include <utils/Log.h> |
| #include <utils/Errors.h> |
| #include <utils/Tokenizer.h> |
| #include <utils/Timers.h> |
| |
| // Enables debug output for the parser. |
| #define DEBUG_PARSER 0 |
| |
| // Enables debug output for parser performance. |
| #define DEBUG_PARSER_PERFORMANCE 0 |
| |
| // Enables debug output for mapping. |
| #define DEBUG_MAPPING 0 |
| |
| |
| namespace android { |
| |
| static const char* WHITESPACE = " \t\r"; |
| |
| // --- KeyLayoutMap --- |
| |
| KeyLayoutMap::KeyLayoutMap() { |
| } |
| |
| KeyLayoutMap::~KeyLayoutMap() { |
| } |
| |
| status_t KeyLayoutMap::load(const std::string& filename, sp<KeyLayoutMap>* outMap) { |
| outMap->clear(); |
| |
| Tokenizer* tokenizer; |
| status_t status = Tokenizer::open(String8(filename.c_str()), &tokenizer); |
| if (status) { |
| ALOGE("Error %d opening key layout map file %s.", status, filename.c_str()); |
| } else { |
| sp<KeyLayoutMap> map = new KeyLayoutMap(); |
| if (!map.get()) { |
| ALOGE("Error allocating key layout map."); |
| status = NO_MEMORY; |
| } 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) { |
| *outMap = map; |
| } |
| } |
| delete tokenizer; |
| } |
| return 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) { |
| #if DEBUG_MAPPING |
| ALOGD("mapKey: scanCode=%d, usageCode=0x%08x ~ Failed.", scanCode, usageCode); |
| #endif |
| *outKeyCode = AKEYCODE_UNKNOWN; |
| *outFlags = 0; |
| return NAME_NOT_FOUND; |
| } |
| |
| *outKeyCode = key->keyCode; |
| *outFlags = key->flags; |
| |
| #if DEBUG_MAPPING |
| ALOGD("mapKey: scanCode=%d, usageCode=0x%08x ~ Result keyCode=%d, outFlags=0x%08x.", |
| scanCode, usageCode, *outKeyCode, *outFlags); |
| #endif |
| return NO_ERROR; |
| } |
| |
| const KeyLayoutMap::Key* KeyLayoutMap::getKey(int32_t scanCode, int32_t usageCode) const { |
| if (usageCode) { |
| ssize_t index = mKeysByUsageCode.indexOfKey(usageCode); |
| if (index >= 0) { |
| return &mKeysByUsageCode.valueAt(index); |
| } |
| } |
| if (scanCode) { |
| ssize_t index = mKeysByScanCode.indexOfKey(scanCode); |
| if (index >= 0) { |
| return &mKeysByScanCode.valueAt(index); |
| } |
| } |
| return nullptr; |
| } |
| |
| status_t KeyLayoutMap::findScanCodesForKey( |
| int32_t keyCode, std::vector<int32_t>* outScanCodes) const { |
| const size_t N = mKeysByScanCode.size(); |
| for (size_t i=0; i<N; i++) { |
| if (mKeysByScanCode.valueAt(i).keyCode == keyCode) { |
| outScanCodes->push_back(mKeysByScanCode.keyAt(i)); |
| } |
| } |
| return NO_ERROR; |
| } |
| |
| status_t KeyLayoutMap::mapAxis(int32_t scanCode, AxisInfo* outAxisInfo) const { |
| ssize_t index = mAxes.indexOfKey(scanCode); |
| if (index < 0) { |
| #if DEBUG_MAPPING |
| ALOGD("mapAxis: scanCode=%d ~ Failed.", scanCode); |
| #endif |
| return NAME_NOT_FOUND; |
| } |
| |
| *outAxisInfo = mAxes.valueAt(index); |
| |
| #if DEBUG_MAPPING |
| ALOGD("mapAxis: scanCode=%d ~ Result mode=%d, axis=%d, highAxis=%d, " |
| "splitValue=%d, flatOverride=%d.", |
| scanCode, |
| outAxisInfo->mode, outAxisInfo->axis, outAxisInfo->highAxis, |
| outAxisInfo->splitValue, outAxisInfo->flatOverride); |
| #endif |
| return NO_ERROR; |
| } |
| |
| status_t KeyLayoutMap::findScanCodeForLed(int32_t ledCode, int32_t* outScanCode) const { |
| const size_t N = mLedsByScanCode.size(); |
| for (size_t i = 0; i < N; i++) { |
| if (mLedsByScanCode.valueAt(i).ledCode == ledCode) { |
| *outScanCode = mLedsByScanCode.keyAt(i); |
| #if DEBUG_MAPPING |
| ALOGD("findScanCodeForLed: ledCode=%d, scanCode=%d.", ledCode, *outScanCode); |
| #endif |
| return NO_ERROR; |
| } |
| } |
| #if DEBUG_MAPPING |
| ALOGD("findScanCodeForLed: ledCode=%d ~ Not found.", ledCode); |
| #endif |
| return NAME_NOT_FOUND; |
| } |
| |
| status_t KeyLayoutMap::findUsageCodeForLed(int32_t ledCode, int32_t* outUsageCode) const { |
| const size_t N = mLedsByUsageCode.size(); |
| for (size_t i = 0; i < N; i++) { |
| if (mLedsByUsageCode.valueAt(i).ledCode == ledCode) { |
| *outUsageCode = mLedsByUsageCode.keyAt(i); |
| #if DEBUG_MAPPING |
| ALOGD("findUsageForLed: ledCode=%d, usage=%x.", ledCode, *outUsageCode); |
| #endif |
| return NO_ERROR; |
| } |
| } |
| #if DEBUG_MAPPING |
| ALOGD("findUsageForLed: ledCode=%d ~ Not found.", ledCode); |
| #endif |
| return NAME_NOT_FOUND; |
| } |
| |
| |
| // --- KeyLayoutMap::Parser --- |
| |
| KeyLayoutMap::Parser::Parser(KeyLayoutMap* map, Tokenizer* tokenizer) : |
| mMap(map), mTokenizer(tokenizer) { |
| } |
| |
| KeyLayoutMap::Parser::~Parser() { |
| } |
| |
| status_t KeyLayoutMap::Parser::parse() { |
| while (!mTokenizer->isEof()) { |
| #if DEBUG_PARSER |
| ALOGD("Parsing %s: '%s'.", mTokenizer->getLocation().string(), |
| mTokenizer->peekRemainderOfLine().string()); |
| #endif |
| |
| 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 { |
| 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; |
| } |
| KeyedVector<int32_t, Key>& map = mapUsage ? mMap->mKeysByUsageCode : mMap->mKeysByScanCode; |
| if (map.indexOfKey(code) >= 0) { |
| 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 = 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 = 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; |
| } |
| |
| #if DEBUG_PARSER |
| ALOGD("Parsed key %s: code=%d, keyCode=%d, flags=0x%08x.", |
| mapUsage ? "usage" : "scan code", code, keyCode, flags); |
| #endif |
| Key key; |
| key.keyCode = keyCode; |
| key.flags = flags; |
| map.add(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.indexOfKey(scanCode) >= 0) { |
| 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 = 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 = 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 = 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 = 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; |
| } |
| } |
| |
| #if DEBUG_PARSER |
| ALOGD("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); |
| #endif |
| mMap->mAxes.add(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; |
| } |
| |
| KeyedVector<int32_t, Led>& map = mapUsage ? mMap->mLedsByUsageCode : mMap->mLedsByScanCode; |
| if (map.indexOfKey(code) >= 0) { |
| 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 = getLedByLabel(ledCodeToken.string()); |
| if (ledCode < 0) { |
| ALOGE("%s: Expected LED code label, got '%s'.", mTokenizer->getLocation().string(), |
| ledCodeToken.string()); |
| return BAD_VALUE; |
| } |
| |
| #if DEBUG_PARSER |
| ALOGD("Parsed led %s: code=%d, ledCode=%d.", |
| mapUsage ? "usage" : "scan code", code, ledCode); |
| #endif |
| |
| Led led; |
| led.ledCode = ledCode; |
| map.add(code, led); |
| return NO_ERROR; |
| } |
| }; |