8bb99ad892
Ensure that the joystick can always reach -1.0, 0.0 and 1.0 positions even when noise filtering is applied. (Bug: 3514510) Add support for a few more standard axes. Add additional mapping modes for axes. Some axes are inverted from standard interpretation or are actually intended to be split into two distict axes such as left/right trigger controls or accelerator/brake. Add key layout file for a G25 racing wheel and XBox 360 controller to tweak behavior. They work fine without them but the axis mappings are not ideal. Change-Id: Id4c86a0a272331c680039a9bde6815bb7eba44ab
342 lines
11 KiB
C++
342 lines
11 KiB
C++
/*
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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 <ui/Keyboard.h>
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#include <ui/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, KeyLayoutMap** outMap) {
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*outMap = NULL;
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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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LOGE("Error %d opening key layout map file %s.", status, filename.string());
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} else {
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KeyLayoutMap* map = new KeyLayoutMap();
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if (!map) {
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LOGE("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, 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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LOGD("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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delete map;
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} else {
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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* keyCode, uint32_t* flags) const {
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ssize_t index = mKeys.indexOfKey(scanCode);
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if (index < 0) {
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#if DEBUG_MAPPING
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LOGD("mapKey: scanCode=%d ~ Failed.", scanCode);
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#endif
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*keyCode = AKEYCODE_UNKNOWN;
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*flags = 0;
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return NAME_NOT_FOUND;
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}
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const Key& k = mKeys.valueAt(index);
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*keyCode = k.keyCode;
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*flags = k.flags;
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#if DEBUG_MAPPING
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LOGD("mapKey: scanCode=%d ~ Result keyCode=%d, flags=0x%08x.", scanCode, *keyCode, *flags);
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#endif
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return NO_ERROR;
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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 = mKeys.size();
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for (size_t i=0; i<N; i++) {
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if (mKeys.valueAt(i).keyCode == keyCode) {
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outScanCodes->add(mKeys.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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LOGD("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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LOGD("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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LOGD("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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LOGE("%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()) {
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LOGE("%s: Expected end of line, 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 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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LOGE("%s: Expected key 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->mKeys.indexOfKey(scanCode) >= 0) {
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LOGE("%s: Duplicate entry for key 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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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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LOGE("%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()) 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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LOGE("%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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LOGE("%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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LOGD("Parsed key: scanCode=%d, keyCode=%d, flags=0x%08x.", scanCode, 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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mMap->mKeys.add(scanCode, 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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LOGE("%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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LOGE("%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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LOGE("%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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LOGE("%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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LOGE("%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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LOGE("%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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LOGE("%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()) {
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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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LOGE("%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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LOGE("%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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LOGD("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);
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#endif
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mMap->mAxes.add(scanCode, axisInfo);
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return NO_ERROR;
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}
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};
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