368 lines
12 KiB
C++
368 lines
12 KiB
C++
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/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "KeyLayoutMap"
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#include <stdlib.h>
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#include <android/keycodes.h>
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#include <input/Keyboard.h>
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#include <input/KeyLayoutMap.h>
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#include <utils/Log.h>
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#include <utils/Errors.h>
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#include <utils/Tokenizer.h>
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#include <utils/Timers.h>
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// Enables debug output for the parser.
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#define DEBUG_PARSER 0
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// Enables debug output for parser performance.
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#define DEBUG_PARSER_PERFORMANCE 0
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// Enables debug output for mapping.
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#define DEBUG_MAPPING 0
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namespace android {
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static const char* WHITESPACE = " \t\r";
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// --- KeyLayoutMap ---
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KeyLayoutMap::KeyLayoutMap() {
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}
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KeyLayoutMap::~KeyLayoutMap() {
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}
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status_t KeyLayoutMap::load(const String8& filename, sp<KeyLayoutMap>* outMap) {
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outMap->clear();
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Tokenizer* tokenizer;
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status_t status = Tokenizer::open(filename, &tokenizer);
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if (status) {
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ALOGE("Error %d opening key layout map file %s.", status, filename.string());
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} else {
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sp<KeyLayoutMap> map = new KeyLayoutMap();
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if (!map.get()) {
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ALOGE("Error allocating key layout map.");
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status = NO_MEMORY;
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} else {
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#if DEBUG_PARSER_PERFORMANCE
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nsecs_t startTime = systemTime(SYSTEM_TIME_MONOTONIC);
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#endif
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Parser parser(map.get(), tokenizer);
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status = parser.parse();
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#if DEBUG_PARSER_PERFORMANCE
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nsecs_t elapsedTime = systemTime(SYSTEM_TIME_MONOTONIC) - startTime;
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ALOGD("Parsed key layout map file '%s' %d lines in %0.3fms.",
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tokenizer->getFilename().string(), tokenizer->getLineNumber(),
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elapsedTime / 1000000.0);
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#endif
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if (!status) {
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*outMap = map;
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}
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}
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delete tokenizer;
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}
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return status;
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}
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status_t KeyLayoutMap::mapKey(int32_t scanCode, int32_t usageCode,
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int32_t* outKeyCode, uint32_t* outFlags) const {
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const Key* key = getKey(scanCode, usageCode);
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if (!key) {
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#if DEBUG_MAPPING
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ALOGD("mapKey: scanCode=%d, usageCode=0x%08x ~ Failed.", scanCode, usageCode);
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#endif
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*outKeyCode = AKEYCODE_UNKNOWN;
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*outFlags = 0;
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return NAME_NOT_FOUND;
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}
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*outKeyCode = key->keyCode;
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*outFlags = key->flags;
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#if DEBUG_MAPPING
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ALOGD("mapKey: scanCode=%d, usageCode=0x%08x ~ Result keyCode=%d, outFlags=0x%08x.",
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scanCode, usageCode, *outKeyCode, *outFlags);
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#endif
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return NO_ERROR;
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}
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const KeyLayoutMap::Key* KeyLayoutMap::getKey(int32_t scanCode, int32_t usageCode) const {
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if (usageCode) {
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ssize_t index = mKeysByUsageCode.indexOfKey(usageCode);
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if (index >= 0) {
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return &mKeysByUsageCode.valueAt(index);
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}
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}
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if (scanCode) {
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ssize_t index = mKeysByScanCode.indexOfKey(scanCode);
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if (index >= 0) {
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return &mKeysByScanCode.valueAt(index);
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}
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}
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return NULL;
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}
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status_t KeyLayoutMap::findScanCodesForKey(int32_t keyCode, Vector<int32_t>* outScanCodes) const {
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const size_t N = mKeysByScanCode.size();
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for (size_t i=0; i<N; i++) {
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if (mKeysByScanCode.valueAt(i).keyCode == keyCode) {
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outScanCodes->add(mKeysByScanCode.keyAt(i));
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}
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}
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return NO_ERROR;
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}
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status_t KeyLayoutMap::mapAxis(int32_t scanCode, AxisInfo* outAxisInfo) const {
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ssize_t index = mAxes.indexOfKey(scanCode);
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if (index < 0) {
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#if DEBUG_MAPPING
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ALOGD("mapAxis: scanCode=%d ~ Failed.", scanCode);
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#endif
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return NAME_NOT_FOUND;
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}
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*outAxisInfo = mAxes.valueAt(index);
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#if DEBUG_MAPPING
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ALOGD("mapAxis: scanCode=%d ~ Result mode=%d, axis=%d, highAxis=%d, "
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"splitValue=%d, flatOverride=%d.",
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scanCode,
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outAxisInfo->mode, outAxisInfo->axis, outAxisInfo->highAxis,
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outAxisInfo->splitValue, outAxisInfo->flatOverride);
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#endif
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return NO_ERROR;
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}
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// --- KeyLayoutMap::Parser ---
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KeyLayoutMap::Parser::Parser(KeyLayoutMap* map, Tokenizer* tokenizer) :
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mMap(map), mTokenizer(tokenizer) {
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}
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KeyLayoutMap::Parser::~Parser() {
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}
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status_t KeyLayoutMap::Parser::parse() {
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while (!mTokenizer->isEof()) {
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#if DEBUG_PARSER
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ALOGD("Parsing %s: '%s'.", mTokenizer->getLocation().string(),
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mTokenizer->peekRemainderOfLine().string());
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#endif
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mTokenizer->skipDelimiters(WHITESPACE);
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if (!mTokenizer->isEol() && mTokenizer->peekChar() != '#') {
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String8 keywordToken = mTokenizer->nextToken(WHITESPACE);
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if (keywordToken == "key") {
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mTokenizer->skipDelimiters(WHITESPACE);
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status_t status = parseKey();
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if (status) return status;
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} else if (keywordToken == "axis") {
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mTokenizer->skipDelimiters(WHITESPACE);
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status_t status = parseAxis();
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if (status) return status;
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} else {
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ALOGE("%s: Expected keyword, got '%s'.", mTokenizer->getLocation().string(),
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keywordToken.string());
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return BAD_VALUE;
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}
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mTokenizer->skipDelimiters(WHITESPACE);
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if (!mTokenizer->isEol() && mTokenizer->peekChar() != '#') {
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ALOGE("%s: Expected end of line or trailing comment, got '%s'.",
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mTokenizer->getLocation().string(),
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mTokenizer->peekRemainderOfLine().string());
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return BAD_VALUE;
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}
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}
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mTokenizer->nextLine();
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}
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return NO_ERROR;
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}
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status_t KeyLayoutMap::Parser::parseKey() {
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String8 codeToken = mTokenizer->nextToken(WHITESPACE);
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bool mapUsage = false;
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if (codeToken == "usage") {
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mapUsage = true;
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mTokenizer->skipDelimiters(WHITESPACE);
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codeToken = mTokenizer->nextToken(WHITESPACE);
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}
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char* end;
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int32_t code = int32_t(strtol(codeToken.string(), &end, 0));
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if (*end) {
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ALOGE("%s: Expected key %s number, got '%s'.", mTokenizer->getLocation().string(),
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mapUsage ? "usage" : "scan code", codeToken.string());
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return BAD_VALUE;
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}
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KeyedVector<int32_t, Key>& map =
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mapUsage ? mMap->mKeysByUsageCode : mMap->mKeysByScanCode;
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if (map.indexOfKey(code) >= 0) {
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ALOGE("%s: Duplicate entry for key %s '%s'.", mTokenizer->getLocation().string(),
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mapUsage ? "usage" : "scan code", codeToken.string());
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return BAD_VALUE;
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}
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mTokenizer->skipDelimiters(WHITESPACE);
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String8 keyCodeToken = mTokenizer->nextToken(WHITESPACE);
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int32_t keyCode = getKeyCodeByLabel(keyCodeToken.string());
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if (!keyCode) {
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ALOGE("%s: Expected key code label, got '%s'.", mTokenizer->getLocation().string(),
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keyCodeToken.string());
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return BAD_VALUE;
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}
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uint32_t flags = 0;
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for (;;) {
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mTokenizer->skipDelimiters(WHITESPACE);
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if (mTokenizer->isEol() || mTokenizer->peekChar() == '#') break;
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String8 flagToken = mTokenizer->nextToken(WHITESPACE);
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uint32_t flag = getKeyFlagByLabel(flagToken.string());
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if (!flag) {
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ALOGE("%s: Expected key flag label, got '%s'.", mTokenizer->getLocation().string(),
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flagToken.string());
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return BAD_VALUE;
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}
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if (flags & flag) {
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ALOGE("%s: Duplicate key flag '%s'.", mTokenizer->getLocation().string(),
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flagToken.string());
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return BAD_VALUE;
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}
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flags |= flag;
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}
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#if DEBUG_PARSER
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ALOGD("Parsed key %s: code=%d, keyCode=%d, flags=0x%08x.",
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mapUsage ? "usage" : "scan code", code, keyCode, flags);
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#endif
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Key key;
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key.keyCode = keyCode;
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key.flags = flags;
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map.add(code, key);
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return NO_ERROR;
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}
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status_t KeyLayoutMap::Parser::parseAxis() {
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String8 scanCodeToken = mTokenizer->nextToken(WHITESPACE);
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char* end;
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int32_t scanCode = int32_t(strtol(scanCodeToken.string(), &end, 0));
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if (*end) {
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ALOGE("%s: Expected axis scan code number, got '%s'.", mTokenizer->getLocation().string(),
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scanCodeToken.string());
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return BAD_VALUE;
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}
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if (mMap->mAxes.indexOfKey(scanCode) >= 0) {
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ALOGE("%s: Duplicate entry for axis scan code '%s'.", mTokenizer->getLocation().string(),
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scanCodeToken.string());
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return BAD_VALUE;
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}
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AxisInfo axisInfo;
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mTokenizer->skipDelimiters(WHITESPACE);
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String8 token = mTokenizer->nextToken(WHITESPACE);
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if (token == "invert") {
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axisInfo.mode = AxisInfo::MODE_INVERT;
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mTokenizer->skipDelimiters(WHITESPACE);
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String8 axisToken = mTokenizer->nextToken(WHITESPACE);
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axisInfo.axis = getAxisByLabel(axisToken.string());
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if (axisInfo.axis < 0) {
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ALOGE("%s: Expected inverted axis label, got '%s'.",
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mTokenizer->getLocation().string(), axisToken.string());
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return BAD_VALUE;
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}
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} else if (token == "split") {
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axisInfo.mode = AxisInfo::MODE_SPLIT;
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mTokenizer->skipDelimiters(WHITESPACE);
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String8 splitToken = mTokenizer->nextToken(WHITESPACE);
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axisInfo.splitValue = int32_t(strtol(splitToken.string(), &end, 0));
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if (*end) {
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ALOGE("%s: Expected split value, got '%s'.",
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mTokenizer->getLocation().string(), splitToken.string());
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return BAD_VALUE;
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}
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mTokenizer->skipDelimiters(WHITESPACE);
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String8 lowAxisToken = mTokenizer->nextToken(WHITESPACE);
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axisInfo.axis = getAxisByLabel(lowAxisToken.string());
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if (axisInfo.axis < 0) {
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ALOGE("%s: Expected low axis label, got '%s'.",
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mTokenizer->getLocation().string(), lowAxisToken.string());
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return BAD_VALUE;
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}
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mTokenizer->skipDelimiters(WHITESPACE);
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String8 highAxisToken = mTokenizer->nextToken(WHITESPACE);
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axisInfo.highAxis = getAxisByLabel(highAxisToken.string());
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if (axisInfo.highAxis < 0) {
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ALOGE("%s: Expected high axis label, got '%s'.",
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mTokenizer->getLocation().string(), highAxisToken.string());
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return BAD_VALUE;
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}
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} else {
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axisInfo.axis = getAxisByLabel(token.string());
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if (axisInfo.axis < 0) {
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ALOGE("%s: Expected axis label, 'split' or 'invert', got '%s'.",
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mTokenizer->getLocation().string(), token.string());
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return BAD_VALUE;
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}
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}
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for (;;) {
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mTokenizer->skipDelimiters(WHITESPACE);
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if (mTokenizer->isEol() || mTokenizer->peekChar() == '#') {
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break;
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}
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String8 keywordToken = mTokenizer->nextToken(WHITESPACE);
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if (keywordToken == "flat") {
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mTokenizer->skipDelimiters(WHITESPACE);
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String8 flatToken = mTokenizer->nextToken(WHITESPACE);
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axisInfo.flatOverride = int32_t(strtol(flatToken.string(), &end, 0));
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if (*end) {
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ALOGE("%s: Expected flat value, got '%s'.",
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mTokenizer->getLocation().string(), flatToken.string());
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return BAD_VALUE;
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}
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} else {
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ALOGE("%s: Expected keyword 'flat', got '%s'.",
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mTokenizer->getLocation().string(), keywordToken.string());
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return BAD_VALUE;
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}
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}
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#if DEBUG_PARSER
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ALOGD("Parsed axis: scanCode=%d, mode=%d, axis=%d, highAxis=%d, "
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"splitValue=%d, flatOverride=%d.",
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scanCode,
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axisInfo.mode, axisInfo.axis, axisInfo.highAxis,
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|
|
axisInfo.splitValue, axisInfo.flatOverride);
|
||
|
|
#endif
|
||
|
|
mMap->mAxes.add(scanCode, axisInfo);
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|