| /* | |
| * 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 String8& filename, sp<KeyLayoutMap>* outMap) { | |
| outMap->clear(); | |
| Tokenizer* tokenizer; | |
| status_t status = Tokenizer::open(filename, &tokenizer); | |
| if (status) { | |
| ALOGE("Error %d opening key layout map file %s.", status, filename.string()); | |
| } 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 NULL; | |
| } | |
| status_t KeyLayoutMap::findScanCodesForKey(int32_t keyCode, 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->add(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; | |
| } | |
| }; |