summaryrefslogtreecommitdiffstats
path: root/widget/gonk/libui/KeyLayoutMap.cpp
blob: 8af4b84e019b193ecac0d719d67288778b5be05c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
/*
 * 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 "cutils_log.h"

#include <stdlib.h>
#include "android_keycodes.h"
#include "Keyboard.h"
#include "KeyLayoutMap.h"
#include <utils/Errors.h>
#include "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;
}
};