EventHub.cpp revision 1a84fd1fb7a51f3fe4f8865e1cdd09f3490f696c
1/* 2 * Copyright (C) 2005 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17// 18// Handle events, like key input and vsync. 19// 20// The goal is to provide an optimized solution for Linux, not an 21// implementation that works well across all platforms. We expect 22// events to arrive on file descriptors, so that we can use a select() 23// select() call to sleep. 24// 25// We can't select() on anything but network sockets in Windows, so we 26// provide an alternative implementation of waitEvent for that platform. 27// 28#define LOG_TAG "EventHub" 29 30//#define LOG_NDEBUG 0 31 32#include "EventHub.h" 33 34#include <hardware_legacy/power.h> 35 36#include <cutils/atomic.h> 37#include <cutils/properties.h> 38#include <utils/Log.h> 39#include <utils/Timers.h> 40#include <utils/threads.h> 41#include <utils/Errors.h> 42 43#include <stdlib.h> 44#include <stdio.h> 45#include <unistd.h> 46#include <fcntl.h> 47#include <memory.h> 48#include <errno.h> 49#include <assert.h> 50 51#include <ui/KeyLayoutMap.h> 52#include <ui/KeyCharacterMap.h> 53#include <ui/VirtualKeyMap.h> 54 55#include <string.h> 56#include <stdint.h> 57#include <dirent.h> 58#ifdef HAVE_INOTIFY 59# include <sys/inotify.h> 60#endif 61#ifdef HAVE_ANDROID_OS 62# include <sys/limits.h> /* not part of Linux */ 63#endif 64#include <sys/poll.h> 65#include <sys/ioctl.h> 66 67/* this macro is used to tell if "bit" is set in "array" 68 * it selects a byte from the array, and does a boolean AND 69 * operation with a byte that only has the relevant bit set. 70 * eg. to check for the 12th bit, we do (array[1] & 1<<4) 71 */ 72#define test_bit(bit, array) (array[bit/8] & (1<<(bit%8))) 73 74/* this macro computes the number of bytes needed to represent a bit array of the specified size */ 75#define sizeof_bit_array(bits) ((bits + 7) / 8) 76 77// Fd at index 0 is always reserved for inotify 78#define FIRST_ACTUAL_DEVICE_INDEX 1 79 80#define INDENT " " 81#define INDENT2 " " 82#define INDENT3 " " 83 84namespace android { 85 86static const char *WAKE_LOCK_ID = "KeyEvents"; 87static const char *DEVICE_PATH = "/dev/input"; 88 89/* return the larger integer */ 90static inline int max(int v1, int v2) 91{ 92 return (v1 > v2) ? v1 : v2; 93} 94 95static inline const char* toString(bool value) { 96 return value ? "true" : "false"; 97} 98 99// --- EventHub::Device --- 100 101EventHub::Device::Device(int fd, int32_t id, const String8& path, 102 const InputDeviceIdentifier& identifier) : 103 next(NULL), 104 fd(fd), id(id), path(path), identifier(identifier), 105 classes(0), keyBitmask(NULL), relBitmask(NULL), 106 configuration(NULL), virtualKeyMap(NULL) { 107} 108 109EventHub::Device::~Device() { 110 close(); 111 delete[] keyBitmask; 112 delete[] relBitmask; 113 delete configuration; 114 delete virtualKeyMap; 115} 116 117void EventHub::Device::close() { 118 if (fd >= 0) { 119 ::close(fd); 120 fd = -1; 121 } 122} 123 124 125// --- EventHub --- 126 127EventHub::EventHub(void) : 128 mError(NO_INIT), mBuiltInKeyboardId(-1), mNextDeviceId(1), 129 mOpeningDevices(0), mClosingDevices(0), 130 mOpened(false), mNeedToSendFinishedDeviceScan(false), 131 mNeedToReopenDevices(0), mNeedToScanDevices(false), 132 mInputFdIndex(1) { 133 acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_ID); 134 135 memset(mSwitches, 0, sizeof(mSwitches)); 136 mNumCpus = sysconf(_SC_NPROCESSORS_ONLN); 137} 138 139EventHub::~EventHub(void) { 140 release_wake_lock(WAKE_LOCK_ID); 141 // we should free stuff here... 142} 143 144status_t EventHub::errorCheck() const { 145 return mError; 146} 147 148String8 EventHub::getDeviceName(int32_t deviceId) const { 149 AutoMutex _l(mLock); 150 Device* device = getDeviceLocked(deviceId); 151 if (device == NULL) return String8(); 152 return device->identifier.name; 153} 154 155uint32_t EventHub::getDeviceClasses(int32_t deviceId) const { 156 AutoMutex _l(mLock); 157 Device* device = getDeviceLocked(deviceId); 158 if (device == NULL) return 0; 159 return device->classes; 160} 161 162void EventHub::getConfiguration(int32_t deviceId, PropertyMap* outConfiguration) const { 163 AutoMutex _l(mLock); 164 Device* device = getDeviceLocked(deviceId); 165 if (device && device->configuration) { 166 *outConfiguration = *device->configuration; 167 } else { 168 outConfiguration->clear(); 169 } 170} 171 172status_t EventHub::getAbsoluteAxisInfo(int32_t deviceId, int axis, 173 RawAbsoluteAxisInfo* outAxisInfo) const { 174 outAxisInfo->clear(); 175 176 AutoMutex _l(mLock); 177 Device* device = getDeviceLocked(deviceId); 178 if (device == NULL) return -1; 179 180 struct input_absinfo info; 181 182 if(ioctl(device->fd, EVIOCGABS(axis), &info)) { 183 LOGW("Error reading absolute controller %d for device %s fd %d\n", 184 axis, device->identifier.name.string(), device->fd); 185 return -errno; 186 } 187 188 if (info.minimum != info.maximum) { 189 outAxisInfo->valid = true; 190 outAxisInfo->minValue = info.minimum; 191 outAxisInfo->maxValue = info.maximum; 192 outAxisInfo->flat = info.flat; 193 outAxisInfo->fuzz = info.fuzz; 194 } 195 return OK; 196} 197 198bool EventHub::hasRelativeAxis(int32_t deviceId, int axis) const { 199 if (axis >= 0 && axis <= REL_MAX) { 200 AutoMutex _l(mLock); 201 202 Device* device = getDeviceLocked(deviceId); 203 if (device && device->relBitmask) { 204 return test_bit(axis, device->relBitmask); 205 } 206 } 207 return false; 208} 209 210int32_t EventHub::getScanCodeState(int32_t deviceId, int32_t scanCode) const { 211 if (scanCode >= 0 && scanCode <= KEY_MAX) { 212 AutoMutex _l(mLock); 213 214 Device* device = getDeviceLocked(deviceId); 215 if (device != NULL) { 216 return getScanCodeStateLocked(device, scanCode); 217 } 218 } 219 return AKEY_STATE_UNKNOWN; 220} 221 222int32_t EventHub::getScanCodeStateLocked(Device* device, int32_t scanCode) const { 223 uint8_t key_bitmask[sizeof_bit_array(KEY_MAX + 1)]; 224 memset(key_bitmask, 0, sizeof(key_bitmask)); 225 if (ioctl(device->fd, 226 EVIOCGKEY(sizeof(key_bitmask)), key_bitmask) >= 0) { 227 return test_bit(scanCode, key_bitmask) ? AKEY_STATE_DOWN : AKEY_STATE_UP; 228 } 229 return AKEY_STATE_UNKNOWN; 230} 231 232int32_t EventHub::getKeyCodeState(int32_t deviceId, int32_t keyCode) const { 233 AutoMutex _l(mLock); 234 235 Device* device = getDeviceLocked(deviceId); 236 if (device != NULL) { 237 return getKeyCodeStateLocked(device, keyCode); 238 } 239 return AKEY_STATE_UNKNOWN; 240} 241 242int32_t EventHub::getKeyCodeStateLocked(Device* device, int32_t keyCode) const { 243 if (!device->keyMap.haveKeyLayout()) { 244 return AKEY_STATE_UNKNOWN; 245 } 246 247 Vector<int32_t> scanCodes; 248 device->keyMap.keyLayoutMap->findScanCodesForKey(keyCode, &scanCodes); 249 250 uint8_t key_bitmask[sizeof_bit_array(KEY_MAX + 1)]; 251 memset(key_bitmask, 0, sizeof(key_bitmask)); 252 if (ioctl(device->fd, EVIOCGKEY(sizeof(key_bitmask)), key_bitmask) >= 0) { 253 #if 0 254 for (size_t i=0; i<=KEY_MAX; i++) { 255 LOGI("(Scan code %d: down=%d)", i, test_bit(i, key_bitmask)); 256 } 257 #endif 258 const size_t N = scanCodes.size(); 259 for (size_t i=0; i<N && i<=KEY_MAX; i++) { 260 int32_t sc = scanCodes.itemAt(i); 261 //LOGI("Code %d: down=%d", sc, test_bit(sc, key_bitmask)); 262 if (sc >= 0 && sc <= KEY_MAX && test_bit(sc, key_bitmask)) { 263 return AKEY_STATE_DOWN; 264 } 265 } 266 return AKEY_STATE_UP; 267 } 268 return AKEY_STATE_UNKNOWN; 269} 270 271int32_t EventHub::getSwitchState(int32_t deviceId, int32_t sw) const { 272 if (sw >= 0 && sw <= SW_MAX) { 273 AutoMutex _l(mLock); 274 275 Device* device = getDeviceLocked(deviceId); 276 if (device != NULL) { 277 return getSwitchStateLocked(device, sw); 278 } 279 } 280 return AKEY_STATE_UNKNOWN; 281} 282 283int32_t EventHub::getSwitchStateLocked(Device* device, int32_t sw) const { 284 uint8_t sw_bitmask[sizeof_bit_array(SW_MAX + 1)]; 285 memset(sw_bitmask, 0, sizeof(sw_bitmask)); 286 if (ioctl(device->fd, 287 EVIOCGSW(sizeof(sw_bitmask)), sw_bitmask) >= 0) { 288 return test_bit(sw, sw_bitmask) ? AKEY_STATE_DOWN : AKEY_STATE_UP; 289 } 290 return AKEY_STATE_UNKNOWN; 291} 292 293bool EventHub::markSupportedKeyCodes(int32_t deviceId, size_t numCodes, 294 const int32_t* keyCodes, uint8_t* outFlags) const { 295 AutoMutex _l(mLock); 296 297 Device* device = getDeviceLocked(deviceId); 298 if (device != NULL) { 299 return markSupportedKeyCodesLocked(device, numCodes, keyCodes, outFlags); 300 } 301 return false; 302} 303 304bool EventHub::markSupportedKeyCodesLocked(Device* device, size_t numCodes, 305 const int32_t* keyCodes, uint8_t* outFlags) const { 306 if (!device->keyMap.haveKeyLayout() || !device->keyBitmask) { 307 return false; 308 } 309 310 Vector<int32_t> scanCodes; 311 for (size_t codeIndex = 0; codeIndex < numCodes; codeIndex++) { 312 scanCodes.clear(); 313 314 status_t err = device->keyMap.keyLayoutMap->findScanCodesForKey( 315 keyCodes[codeIndex], &scanCodes); 316 if (! err) { 317 // check the possible scan codes identified by the layout map against the 318 // map of codes actually emitted by the driver 319 for (size_t sc = 0; sc < scanCodes.size(); sc++) { 320 if (test_bit(scanCodes[sc], device->keyBitmask)) { 321 outFlags[codeIndex] = 1; 322 break; 323 } 324 } 325 } 326 } 327 return true; 328} 329 330status_t EventHub::mapKey(int32_t deviceId, int scancode, 331 int32_t* outKeycode, uint32_t* outFlags) const 332{ 333 AutoMutex _l(mLock); 334 Device* device = getDeviceLocked(deviceId); 335 336 if (device && device->keyMap.haveKeyLayout()) { 337 status_t err = device->keyMap.keyLayoutMap->mapKey(scancode, outKeycode, outFlags); 338 if (err == NO_ERROR) { 339 return NO_ERROR; 340 } 341 } 342 343 if (mBuiltInKeyboardId != -1) { 344 device = getDeviceLocked(mBuiltInKeyboardId); 345 346 if (device && device->keyMap.haveKeyLayout()) { 347 status_t err = device->keyMap.keyLayoutMap->mapKey(scancode, outKeycode, outFlags); 348 if (err == NO_ERROR) { 349 return NO_ERROR; 350 } 351 } 352 } 353 354 *outKeycode = 0; 355 *outFlags = 0; 356 return NAME_NOT_FOUND; 357} 358 359status_t EventHub::mapAxis(int32_t deviceId, int scancode, AxisInfo* outAxisInfo) const 360{ 361 AutoMutex _l(mLock); 362 Device* device = getDeviceLocked(deviceId); 363 364 if (device && device->keyMap.haveKeyLayout()) { 365 status_t err = device->keyMap.keyLayoutMap->mapAxis(scancode, outAxisInfo); 366 if (err == NO_ERROR) { 367 return NO_ERROR; 368 } 369 } 370 371 if (mBuiltInKeyboardId != -1) { 372 device = getDeviceLocked(mBuiltInKeyboardId); 373 374 if (device && device->keyMap.haveKeyLayout()) { 375 status_t err = device->keyMap.keyLayoutMap->mapAxis(scancode, outAxisInfo); 376 if (err == NO_ERROR) { 377 return NO_ERROR; 378 } 379 } 380 } 381 382 return NAME_NOT_FOUND; 383} 384 385void EventHub::setExcludedDevices(const Vector<String8>& devices) { 386 AutoMutex _l(mLock); 387 388 mExcludedDevices = devices; 389} 390 391bool EventHub::hasLed(int32_t deviceId, int32_t led) const { 392 AutoMutex _l(mLock); 393 Device* device = getDeviceLocked(deviceId); 394 if (device) { 395 uint8_t bitmask[sizeof_bit_array(LED_MAX + 1)]; 396 memset(bitmask, 0, sizeof(bitmask)); 397 if (ioctl(device->fd, EVIOCGBIT(EV_LED, sizeof(bitmask)), bitmask) >= 0) { 398 if (test_bit(led, bitmask)) { 399 return true; 400 } 401 } 402 } 403 return false; 404} 405 406void EventHub::setLedState(int32_t deviceId, int32_t led, bool on) { 407 AutoMutex _l(mLock); 408 Device* device = getDeviceLocked(deviceId); 409 if (device) { 410 struct input_event ev; 411 ev.time.tv_sec = 0; 412 ev.time.tv_usec = 0; 413 ev.type = EV_LED; 414 ev.code = led; 415 ev.value = on ? 1 : 0; 416 417 ssize_t nWrite; 418 do { 419 nWrite = write(device->fd, &ev, sizeof(struct input_event)); 420 } while (nWrite == -1 && errno == EINTR); 421 } 422} 423 424void EventHub::getVirtualKeyDefinitions(int32_t deviceId, 425 Vector<VirtualKeyDefinition>& outVirtualKeys) const { 426 outVirtualKeys.clear(); 427 428 AutoMutex _l(mLock); 429 Device* device = getDeviceLocked(deviceId); 430 if (device && device->virtualKeyMap) { 431 outVirtualKeys.appendVector(device->virtualKeyMap->getVirtualKeys()); 432 } 433} 434 435EventHub::Device* EventHub::getDeviceLocked(int32_t deviceId) const { 436 if (deviceId == 0) { 437 deviceId = mBuiltInKeyboardId; 438 } 439 440 size_t numDevices = mDevices.size(); 441 for (size_t i = FIRST_ACTUAL_DEVICE_INDEX; i < numDevices; i++) { 442 Device* device = mDevices[i]; 443 if (device->id == deviceId) { 444 return device; 445 } 446 } 447 return NULL; 448} 449 450size_t EventHub::getEvents(int timeoutMillis, RawEvent* buffer, size_t bufferSize) { 451 // Note that we only allow one caller to getEvents(), so don't need 452 // to do locking here... only when adding/removing devices. 453 assert(bufferSize >= 1); 454 455 if (!mOpened) { 456 android_atomic_acquire_store(0, &mNeedToReopenDevices); 457 458 mError = openPlatformInput() ? NO_ERROR : UNKNOWN_ERROR; 459 mOpened = true; 460 mNeedToScanDevices = true; 461 } 462 463 struct input_event readBuffer[bufferSize]; 464 465 RawEvent* event = buffer; 466 size_t capacity = bufferSize; 467 for (;;) { 468 nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC); 469 470 // Reopen input devices if needed. 471 if (android_atomic_acquire_load(&mNeedToReopenDevices)) { 472 android_atomic_acquire_store(0, &mNeedToReopenDevices); 473 474 LOGI("Reopening all input devices due to a configuration change."); 475 476 AutoMutex _l(mLock); 477 while (mDevices.size() > 1) { 478 closeDeviceAtIndexLocked(mDevices.size() - 1); 479 } 480 mNeedToScanDevices = true; 481 break; // return to the caller before we actually rescan 482 } 483 484 // Report any devices that had last been added/removed. 485 while (mClosingDevices) { 486 Device* device = mClosingDevices; 487 LOGV("Reporting device closed: id=%d, name=%s\n", 488 device->id, device->path.string()); 489 mClosingDevices = device->next; 490 event->when = now; 491 event->deviceId = device->id == mBuiltInKeyboardId ? 0 : device->id; 492 event->type = DEVICE_REMOVED; 493 event += 1; 494 delete device; 495 mNeedToSendFinishedDeviceScan = true; 496 if (--capacity == 0) { 497 break; 498 } 499 } 500 501 if (mNeedToScanDevices) { 502 mNeedToScanDevices = false; 503 scanDevices(); 504 mNeedToSendFinishedDeviceScan = true; 505 } 506 507 while (mOpeningDevices != NULL) { 508 Device* device = mOpeningDevices; 509 LOGV("Reporting device opened: id=%d, name=%s\n", 510 device->id, device->path.string()); 511 mOpeningDevices = device->next; 512 event->when = now; 513 event->deviceId = device->id == mBuiltInKeyboardId ? 0 : device->id; 514 event->type = DEVICE_ADDED; 515 event += 1; 516 mNeedToSendFinishedDeviceScan = true; 517 if (--capacity == 0) { 518 break; 519 } 520 } 521 522 if (mNeedToSendFinishedDeviceScan) { 523 mNeedToSendFinishedDeviceScan = false; 524 event->when = now; 525 event->type = FINISHED_DEVICE_SCAN; 526 event += 1; 527 if (--capacity == 0) { 528 break; 529 } 530 } 531 532 // Grab the next input event. 533 // mInputFdIndex is initially 1 because index 0 is used for inotify. 534 bool deviceWasRemoved = false; 535 while (mInputFdIndex < mFds.size()) { 536 const struct pollfd& pfd = mFds[mInputFdIndex]; 537 if (pfd.revents & POLLIN) { 538 int32_t readSize = read(pfd.fd, readBuffer, sizeof(struct input_event) * capacity); 539 if (readSize < 0) { 540 if (errno == ENODEV) { 541 deviceWasRemoved = true; 542 break; 543 } 544 if (errno != EAGAIN && errno != EINTR) { 545 LOGW("could not get event (errno=%d)", errno); 546 } 547 } else if ((readSize % sizeof(struct input_event)) != 0) { 548 LOGE("could not get event (wrong size: %d)", readSize); 549 } else if (readSize == 0) { // eof 550 deviceWasRemoved = true; 551 break; 552 } else { 553 const Device* device = mDevices[mInputFdIndex]; 554 int32_t deviceId = device->id == mBuiltInKeyboardId ? 0 : device->id; 555 556 size_t count = size_t(readSize) / sizeof(struct input_event); 557 for (size_t i = 0; i < count; i++) { 558 const struct input_event& iev = readBuffer[i]; 559 LOGV("%s got: t0=%d, t1=%d, type=%d, code=%d, value=%d", 560 device->path.string(), 561 (int) iev.time.tv_sec, (int) iev.time.tv_usec, 562 iev.type, iev.code, iev.value); 563 564#ifdef HAVE_POSIX_CLOCKS 565 // Use the time specified in the event instead of the current time 566 // so that downstream code can get more accurate estimates of 567 // event dispatch latency from the time the event is enqueued onto 568 // the evdev client buffer. 569 // 570 // The event's timestamp fortuitously uses the same monotonic clock 571 // time base as the rest of Android. The kernel event device driver 572 // (drivers/input/evdev.c) obtains timestamps using ktime_get_ts(). 573 // The systemTime(SYSTEM_TIME_MONOTONIC) function we use everywhere 574 // calls clock_gettime(CLOCK_MONOTONIC) which is implemented as a 575 // system call that also queries ktime_get_ts(). 576 event->when = nsecs_t(iev.time.tv_sec) * 1000000000LL 577 + nsecs_t(iev.time.tv_usec) * 1000LL; 578 LOGV("event time %lld, now %lld", event->when, now); 579#else 580 event->when = now; 581#endif 582 event->deviceId = deviceId; 583 event->type = iev.type; 584 event->scanCode = iev.code; 585 event->value = iev.value; 586 event->keyCode = AKEYCODE_UNKNOWN; 587 event->flags = 0; 588 if (iev.type == EV_KEY && device->keyMap.haveKeyLayout()) { 589 status_t err = device->keyMap.keyLayoutMap->mapKey(iev.code, 590 &event->keyCode, &event->flags); 591 LOGV("iev.code=%d keyCode=%d flags=0x%08x err=%d\n", 592 iev.code, event->keyCode, event->flags, err); 593 } 594 event += 1; 595 } 596 capacity -= count; 597 if (capacity == 0) { 598 break; 599 } 600 } 601 } 602 mInputFdIndex += 1; 603 } 604 605 // Handle the case where a device has been removed but INotify has not yet noticed. 606 if (deviceWasRemoved) { 607 AutoMutex _l(mLock); 608 closeDeviceAtIndexLocked(mInputFdIndex); 609 continue; // report added or removed devices immediately 610 } 611 612#if HAVE_INOTIFY 613 // readNotify() will modify mFDs and mFDCount, so this must be done after 614 // processing all other events. 615 if(mFds[0].revents & POLLIN) { 616 readNotify(mFds[0].fd); 617 mFds.editItemAt(0).revents = 0; 618 mInputFdIndex = mFds.size(); 619 continue; // report added or removed devices immediately 620 } 621#endif 622 623 // Return now if we have collected any events, otherwise poll. 624 if (event != buffer) { 625 break; 626 } 627 628 // Poll for events. Mind the wake lock dance! 629 // We hold a wake lock at all times except during poll(). This works due to some 630 // subtle choreography. When a device driver has pending (unread) events, it acquires 631 // a kernel wake lock. However, once the last pending event has been read, the device 632 // driver will release the kernel wake lock. To prevent the system from going to sleep 633 // when this happens, the EventHub holds onto its own user wake lock while the client 634 // is processing events. Thus the system can only sleep if there are no events 635 // pending or currently being processed. 636 // 637 // The timeout is advisory only. If the device is asleep, it will not wake just to 638 // service the timeout. 639 release_wake_lock(WAKE_LOCK_ID); 640 641 int pollResult = poll(mFds.editArray(), mFds.size(), timeoutMillis); 642 643 acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_ID); 644 645 if (pollResult == 0) { 646 break; // timed out 647 } 648 if (pollResult < 0) { 649 // Sleep after errors to avoid locking up the system. 650 // Hopefully the error is transient. 651 if (errno != EINTR) { 652 LOGW("poll failed (errno=%d)\n", errno); 653 usleep(100000); 654 } 655 } else { 656 // On an SMP system, it is possible for the framework to read input events 657 // faster than the kernel input device driver can produce a complete packet. 658 // Because poll() wakes up as soon as the first input event becomes available, 659 // the framework will often end up reading one event at a time until the 660 // packet is complete. Instead of one call to read() returning 71 events, 661 // it could take 71 calls to read() each returning 1 event. 662 // 663 // Sleep for a short period of time after waking up from the poll() to give 664 // the kernel time to finish writing the entire packet of input events. 665 if (mNumCpus > 1) { 666 usleep(250); 667 } 668 } 669 670 // Prepare to process all of the FDs we just polled. 671 mInputFdIndex = 1; 672 } 673 674 // All done, return the number of events we read. 675 return event - buffer; 676} 677 678/* 679 * Open the platform-specific input device. 680 */ 681bool EventHub::openPlatformInput(void) { 682 /* 683 * Open platform-specific input device(s). 684 */ 685 int res, fd; 686 687#ifdef HAVE_INOTIFY 688 fd = inotify_init(); 689 res = inotify_add_watch(fd, DEVICE_PATH, IN_DELETE | IN_CREATE); 690 if(res < 0) { 691 LOGE("could not add watch for %s, %s\n", DEVICE_PATH, strerror(errno)); 692 } 693#else 694 /* 695 * The code in EventHub::getEvent assumes that mFDs[0] is an inotify fd. 696 * We allocate space for it and set it to something invalid. 697 */ 698 fd = -1; 699#endif 700 701 // Reserve fd index 0 for inotify. 702 struct pollfd pollfd; 703 pollfd.fd = fd; 704 pollfd.events = POLLIN; 705 pollfd.revents = 0; 706 mFds.push(pollfd); 707 mDevices.push(NULL); 708 return true; 709} 710 711void EventHub::scanDevices() { 712 int res = scanDir(DEVICE_PATH); 713 if(res < 0) { 714 LOGE("scan dir failed for %s\n", DEVICE_PATH); 715 } 716} 717 718// ---------------------------------------------------------------------------- 719 720static bool containsNonZeroByte(const uint8_t* array, uint32_t startIndex, uint32_t endIndex) { 721 const uint8_t* end = array + endIndex; 722 array += startIndex; 723 while (array != end) { 724 if (*(array++) != 0) { 725 return true; 726 } 727 } 728 return false; 729} 730 731static const int32_t GAMEPAD_KEYCODES[] = { 732 AKEYCODE_BUTTON_A, AKEYCODE_BUTTON_B, AKEYCODE_BUTTON_C, 733 AKEYCODE_BUTTON_X, AKEYCODE_BUTTON_Y, AKEYCODE_BUTTON_Z, 734 AKEYCODE_BUTTON_L1, AKEYCODE_BUTTON_R1, 735 AKEYCODE_BUTTON_L2, AKEYCODE_BUTTON_R2, 736 AKEYCODE_BUTTON_THUMBL, AKEYCODE_BUTTON_THUMBR, 737 AKEYCODE_BUTTON_START, AKEYCODE_BUTTON_SELECT, AKEYCODE_BUTTON_MODE, 738 AKEYCODE_BUTTON_1, AKEYCODE_BUTTON_2, AKEYCODE_BUTTON_3, AKEYCODE_BUTTON_4, 739 AKEYCODE_BUTTON_5, AKEYCODE_BUTTON_6, AKEYCODE_BUTTON_7, AKEYCODE_BUTTON_8, 740 AKEYCODE_BUTTON_9, AKEYCODE_BUTTON_10, AKEYCODE_BUTTON_11, AKEYCODE_BUTTON_12, 741 AKEYCODE_BUTTON_13, AKEYCODE_BUTTON_14, AKEYCODE_BUTTON_15, AKEYCODE_BUTTON_16, 742}; 743 744int EventHub::openDevice(const char *devicePath) { 745 char buffer[80]; 746 747 LOGV("Opening device: %s", devicePath); 748 749 AutoMutex _l(mLock); 750 751 int fd = open(devicePath, O_RDWR); 752 if(fd < 0) { 753 LOGE("could not open %s, %s\n", devicePath, strerror(errno)); 754 return -1; 755 } 756 757 InputDeviceIdentifier identifier; 758 759 // Get device name. 760 if(ioctl(fd, EVIOCGNAME(sizeof(buffer) - 1), &buffer) < 1) { 761 //fprintf(stderr, "could not get device name for %s, %s\n", devicePath, strerror(errno)); 762 } else { 763 buffer[sizeof(buffer) - 1] = '\0'; 764 identifier.name.setTo(buffer); 765 } 766 767 // Check to see if the device is on our excluded list 768 for (size_t i = 0; i < mExcludedDevices.size(); i++) { 769 const String8& item = mExcludedDevices.itemAt(i); 770 if (identifier.name == item) { 771 LOGI("ignoring event id %s driver %s\n", devicePath, item.string()); 772 close(fd); 773 return -1; 774 } 775 } 776 777 // Get device driver version. 778 int driverVersion; 779 if(ioctl(fd, EVIOCGVERSION, &driverVersion)) { 780 LOGE("could not get driver version for %s, %s\n", devicePath, strerror(errno)); 781 close(fd); 782 return -1; 783 } 784 785 // Get device identifier. 786 struct input_id inputId; 787 if(ioctl(fd, EVIOCGID, &inputId)) { 788 LOGE("could not get device input id for %s, %s\n", devicePath, strerror(errno)); 789 close(fd); 790 return -1; 791 } 792 identifier.bus = inputId.bustype; 793 identifier.product = inputId.product; 794 identifier.vendor = inputId.vendor; 795 identifier.version = inputId.version; 796 797 // Get device physical location. 798 if(ioctl(fd, EVIOCGPHYS(sizeof(buffer) - 1), &buffer) < 1) { 799 //fprintf(stderr, "could not get location for %s, %s\n", devicePath, strerror(errno)); 800 } else { 801 buffer[sizeof(buffer) - 1] = '\0'; 802 identifier.location.setTo(buffer); 803 } 804 805 // Get device unique id. 806 if(ioctl(fd, EVIOCGUNIQ(sizeof(buffer) - 1), &buffer) < 1) { 807 //fprintf(stderr, "could not get idstring for %s, %s\n", devicePath, strerror(errno)); 808 } else { 809 buffer[sizeof(buffer) - 1] = '\0'; 810 identifier.uniqueId.setTo(buffer); 811 } 812 813 // Make file descriptor non-blocking for use with poll(). 814 if (fcntl(fd, F_SETFL, O_NONBLOCK)) { 815 LOGE("Error %d making device file descriptor non-blocking.", errno); 816 close(fd); 817 return -1; 818 } 819 820 // Allocate device. (The device object takes ownership of the fd at this point.) 821 int32_t deviceId = mNextDeviceId++; 822 Device* device = new Device(fd, deviceId, String8(devicePath), identifier); 823 824#if 0 825 LOGI("add device %d: %s\n", deviceId, devicePath); 826 LOGI(" bus: %04x\n" 827 " vendor %04x\n" 828 " product %04x\n" 829 " version %04x\n", 830 identifier.bus, identifier.vendor, identifier.product, identifier.version); 831 LOGI(" name: \"%s\"\n", identifier.name.string()); 832 LOGI(" location: \"%s\"\n", identifier.location.string()); 833 LOGI(" unique id: \"%s\"\n", identifier.uniqueId.string()); 834 LOGI(" driver: v%d.%d.%d\n", 835 driverVersion >> 16, (driverVersion >> 8) & 0xff, driverVersion & 0xff); 836#endif 837 838 // Load the configuration file for the device. 839 loadConfiguration(device); 840 841 // Figure out the kinds of events the device reports. 842 uint8_t key_bitmask[sizeof_bit_array(KEY_MAX + 1)]; 843 memset(key_bitmask, 0, sizeof(key_bitmask)); 844 ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(key_bitmask)), key_bitmask); 845 846 uint8_t abs_bitmask[sizeof_bit_array(ABS_MAX + 1)]; 847 memset(abs_bitmask, 0, sizeof(abs_bitmask)); 848 ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(abs_bitmask)), abs_bitmask); 849 850 uint8_t rel_bitmask[sizeof_bit_array(REL_MAX + 1)]; 851 memset(rel_bitmask, 0, sizeof(rel_bitmask)); 852 ioctl(fd, EVIOCGBIT(EV_REL, sizeof(rel_bitmask)), rel_bitmask); 853 854 uint8_t sw_bitmask[sizeof_bit_array(SW_MAX + 1)]; 855 memset(sw_bitmask, 0, sizeof(sw_bitmask)); 856 ioctl(fd, EVIOCGBIT(EV_SW, sizeof(sw_bitmask)), sw_bitmask); 857 858 device->keyBitmask = new uint8_t[sizeof(key_bitmask)]; 859 if (device->keyBitmask != NULL) { 860 memcpy(device->keyBitmask, key_bitmask, sizeof(key_bitmask)); 861 } else { 862 delete device; 863 LOGE("out of memory allocating key bitmask"); 864 return -1; 865 } 866 867 device->relBitmask = new uint8_t[sizeof(rel_bitmask)]; 868 if (device->relBitmask != NULL) { 869 memcpy(device->relBitmask, rel_bitmask, sizeof(rel_bitmask)); 870 } else { 871 delete device; 872 LOGE("out of memory allocating rel bitmask"); 873 return -1; 874 } 875 876 // See if this is a keyboard. Ignore everything in the button range except for 877 // joystick and gamepad buttons which are handled like keyboards for the most part. 878 bool haveKeyboardKeys = containsNonZeroByte(key_bitmask, 0, sizeof_bit_array(BTN_MISC)) 879 || containsNonZeroByte(key_bitmask, sizeof_bit_array(KEY_OK), 880 sizeof_bit_array(KEY_MAX + 1)); 881 bool haveGamepadButtons = containsNonZeroByte(key_bitmask, sizeof_bit_array(BTN_MISC), 882 sizeof_bit_array(BTN_MOUSE)) 883 || containsNonZeroByte(key_bitmask, sizeof_bit_array(BTN_JOYSTICK), 884 sizeof_bit_array(BTN_DIGI)); 885 if (haveKeyboardKeys || haveGamepadButtons) { 886 device->classes |= INPUT_DEVICE_CLASS_KEYBOARD; 887 } 888 889 // See if this is a cursor device such as a trackball or mouse. 890 if (test_bit(BTN_MOUSE, key_bitmask) 891 && test_bit(REL_X, rel_bitmask) 892 && test_bit(REL_Y, rel_bitmask)) { 893 device->classes |= INPUT_DEVICE_CLASS_CURSOR; 894 } 895 896 // See if this is a touch pad. 897 // Is this a new modern multi-touch driver? 898 if (test_bit(ABS_MT_POSITION_X, abs_bitmask) 899 && test_bit(ABS_MT_POSITION_Y, abs_bitmask)) { 900 // Some joysticks such as the PS3 controller report axes that conflict 901 // with the ABS_MT range. Try to confirm that the device really is 902 // a touch screen. 903 if (test_bit(BTN_TOUCH, key_bitmask) || !haveGamepadButtons) { 904 device->classes |= INPUT_DEVICE_CLASS_TOUCH | INPUT_DEVICE_CLASS_TOUCH_MT; 905 } 906 // Is this an old style single-touch driver? 907 } else if (test_bit(BTN_TOUCH, key_bitmask) 908 && test_bit(ABS_X, abs_bitmask) 909 && test_bit(ABS_Y, abs_bitmask)) { 910 device->classes |= INPUT_DEVICE_CLASS_TOUCH; 911 } 912 913 // See if this device is a joystick. 914 // Ignore touchscreens because they use the same absolute axes for other purposes. 915 // Assumes that joysticks always have gamepad buttons in order to distinguish them 916 // from other devices such as accelerometers that also have absolute axes. 917 if (haveGamepadButtons 918 && !(device->classes & INPUT_DEVICE_CLASS_TOUCH) 919 && containsNonZeroByte(abs_bitmask, 0, sizeof_bit_array(ABS_MAX + 1))) { 920 device->classes |= INPUT_DEVICE_CLASS_JOYSTICK; 921 } 922 923 // figure out the switches this device reports 924 bool haveSwitches = false; 925 for (int i=0; i<EV_SW; i++) { 926 //LOGI("Device %d sw %d: has=%d", device->id, i, test_bit(i, sw_bitmask)); 927 if (test_bit(i, sw_bitmask)) { 928 haveSwitches = true; 929 if (mSwitches[i] == 0) { 930 mSwitches[i] = device->id; 931 } 932 } 933 } 934 if (haveSwitches) { 935 device->classes |= INPUT_DEVICE_CLASS_SWITCH; 936 } 937 938 if ((device->classes & INPUT_DEVICE_CLASS_TOUCH)) { 939 // Load the virtual keys for the touch screen, if any. 940 // We do this now so that we can make sure to load the keymap if necessary. 941 status_t status = loadVirtualKeyMap(device); 942 if (!status) { 943 device->classes |= INPUT_DEVICE_CLASS_KEYBOARD; 944 } 945 } 946 947 // Load the key map. 948 // We need to do this for joysticks too because the key layout may specify axes. 949 status_t keyMapStatus = NAME_NOT_FOUND; 950 if (device->classes & (INPUT_DEVICE_CLASS_KEYBOARD | INPUT_DEVICE_CLASS_JOYSTICK)) { 951 // Load the keymap for the device. 952 keyMapStatus = loadKeyMap(device); 953 } 954 955 // Configure the keyboard, gamepad or virtual keyboard. 956 if (device->classes & INPUT_DEVICE_CLASS_KEYBOARD) { 957 // Set system properties for the keyboard. 958 setKeyboardProperties(device, false); 959 960 // Register the keyboard as a built-in keyboard if it is eligible. 961 if (!keyMapStatus 962 && mBuiltInKeyboardId == -1 963 && isEligibleBuiltInKeyboard(device->identifier, 964 device->configuration, &device->keyMap)) { 965 mBuiltInKeyboardId = device->id; 966 setKeyboardProperties(device, true); 967 } 968 969 // 'Q' key support = cheap test of whether this is an alpha-capable kbd 970 if (hasKeycodeLocked(device, AKEYCODE_Q)) { 971 device->classes |= INPUT_DEVICE_CLASS_ALPHAKEY; 972 } 973 974 // See if this device has a DPAD. 975 if (hasKeycodeLocked(device, AKEYCODE_DPAD_UP) && 976 hasKeycodeLocked(device, AKEYCODE_DPAD_DOWN) && 977 hasKeycodeLocked(device, AKEYCODE_DPAD_LEFT) && 978 hasKeycodeLocked(device, AKEYCODE_DPAD_RIGHT) && 979 hasKeycodeLocked(device, AKEYCODE_DPAD_CENTER)) { 980 device->classes |= INPUT_DEVICE_CLASS_DPAD; 981 } 982 983 // See if this device has a gamepad. 984 for (size_t i = 0; i < sizeof(GAMEPAD_KEYCODES)/sizeof(GAMEPAD_KEYCODES[0]); i++) { 985 if (hasKeycodeLocked(device, GAMEPAD_KEYCODES[i])) { 986 device->classes |= INPUT_DEVICE_CLASS_GAMEPAD; 987 break; 988 } 989 } 990 } 991 992 // If the device isn't recognized as something we handle, don't monitor it. 993 if (device->classes == 0) { 994 LOGV("Dropping device: id=%d, path='%s', name='%s'", 995 deviceId, devicePath, device->identifier.name.string()); 996 delete device; 997 return -1; 998 } 999 1000 // Determine whether the device is external or internal. 1001 if (isExternalDevice(device)) { 1002 device->classes |= INPUT_DEVICE_CLASS_EXTERNAL; 1003 } 1004 1005 LOGI("New device: id=%d, fd=%d, path='%s', name='%s', classes=0x%x, " 1006 "configuration='%s', keyLayout='%s', keyCharacterMap='%s', builtinKeyboard=%s", 1007 deviceId, fd, devicePath, device->identifier.name.string(), 1008 device->classes, 1009 device->configurationFile.string(), 1010 device->keyMap.keyLayoutFile.string(), 1011 device->keyMap.keyCharacterMapFile.string(), 1012 toString(mBuiltInKeyboardId == deviceId)); 1013 1014 struct pollfd pollfd; 1015 pollfd.fd = fd; 1016 pollfd.events = POLLIN; 1017 pollfd.revents = 0; 1018 mFds.push(pollfd); 1019 mDevices.push(device); 1020 1021 device->next = mOpeningDevices; 1022 mOpeningDevices = device; 1023 return 0; 1024} 1025 1026void EventHub::loadConfiguration(Device* device) { 1027 device->configurationFile = getInputDeviceConfigurationFilePathByDeviceIdentifier( 1028 device->identifier, INPUT_DEVICE_CONFIGURATION_FILE_TYPE_CONFIGURATION); 1029 if (device->configurationFile.isEmpty()) { 1030 LOGD("No input device configuration file found for device '%s'.", 1031 device->identifier.name.string()); 1032 } else { 1033 status_t status = PropertyMap::load(device->configurationFile, 1034 &device->configuration); 1035 if (status) { 1036 LOGE("Error loading input device configuration file for device '%s'. " 1037 "Using default configuration.", 1038 device->identifier.name.string()); 1039 } 1040 } 1041} 1042 1043status_t EventHub::loadVirtualKeyMap(Device* device) { 1044 // The virtual key map is supplied by the kernel as a system board property file. 1045 String8 path; 1046 path.append("/sys/board_properties/virtualkeys."); 1047 path.append(device->identifier.name); 1048 if (access(path.string(), R_OK)) { 1049 return NAME_NOT_FOUND; 1050 } 1051 return VirtualKeyMap::load(path, &device->virtualKeyMap); 1052} 1053 1054status_t EventHub::loadKeyMap(Device* device) { 1055 return device->keyMap.load(device->identifier, device->configuration); 1056} 1057 1058void EventHub::setKeyboardProperties(Device* device, bool builtInKeyboard) { 1059 int32_t id = builtInKeyboard ? 0 : device->id; 1060 android::setKeyboardProperties(id, device->identifier, 1061 device->keyMap.keyLayoutFile, device->keyMap.keyCharacterMapFile); 1062} 1063 1064void EventHub::clearKeyboardProperties(Device* device, bool builtInKeyboard) { 1065 int32_t id = builtInKeyboard ? 0 : device->id; 1066 android::clearKeyboardProperties(id); 1067} 1068 1069bool EventHub::isExternalDevice(Device* device) { 1070 if (device->configuration) { 1071 bool value; 1072 if (device->configuration->tryGetProperty(String8("device.internal"), value) 1073 && value) { 1074 return false; 1075 } 1076 } 1077 return device->identifier.bus == BUS_USB || device->identifier.bus == BUS_BLUETOOTH; 1078} 1079 1080bool EventHub::hasKeycodeLocked(Device* device, int keycode) const { 1081 if (!device->keyMap.haveKeyLayout() || !device->keyBitmask) { 1082 return false; 1083 } 1084 1085 Vector<int32_t> scanCodes; 1086 device->keyMap.keyLayoutMap->findScanCodesForKey(keycode, &scanCodes); 1087 const size_t N = scanCodes.size(); 1088 for (size_t i=0; i<N && i<=KEY_MAX; i++) { 1089 int32_t sc = scanCodes.itemAt(i); 1090 if (sc >= 0 && sc <= KEY_MAX && test_bit(sc, device->keyBitmask)) { 1091 return true; 1092 } 1093 } 1094 1095 return false; 1096} 1097 1098int EventHub::closeDevice(const char *devicePath) { 1099 AutoMutex _l(mLock); 1100 1101 for (size_t i = FIRST_ACTUAL_DEVICE_INDEX; i < mDevices.size(); i++) { 1102 Device* device = mDevices[i]; 1103 if (device->path == devicePath) { 1104 return closeDeviceAtIndexLocked(i); 1105 } 1106 } 1107 LOGV("Remove device: %s not found, device may already have been removed.", devicePath); 1108 return -1; 1109} 1110 1111int EventHub::closeDeviceAtIndexLocked(int index) { 1112 Device* device = mDevices[index]; 1113 LOGI("Removed device: path=%s name=%s id=%d fd=%d classes=0x%x\n", 1114 device->path.string(), device->identifier.name.string(), device->id, 1115 device->fd, device->classes); 1116 1117 for (int j=0; j<EV_SW; j++) { 1118 if (mSwitches[j] == device->id) { 1119 mSwitches[j] = 0; 1120 } 1121 } 1122 1123 if (device->id == mBuiltInKeyboardId) { 1124 LOGW("built-in keyboard device %s (id=%d) is closing! the apps will not like this", 1125 device->path.string(), mBuiltInKeyboardId); 1126 mBuiltInKeyboardId = -1; 1127 clearKeyboardProperties(device, true); 1128 } 1129 clearKeyboardProperties(device, false); 1130 1131 mFds.removeAt(index); 1132 mDevices.removeAt(index); 1133 device->close(); 1134 1135 // Unlink for opening devices list if it is present. 1136 Device* pred = NULL; 1137 bool found = false; 1138 for (Device* entry = mOpeningDevices; entry != NULL; ) { 1139 if (entry == device) { 1140 found = true; 1141 break; 1142 } 1143 pred = entry; 1144 entry = entry->next; 1145 } 1146 if (found) { 1147 // Unlink the device from the opening devices list then delete it. 1148 // We don't need to tell the client that the device was closed because 1149 // it does not even know it was opened in the first place. 1150 LOGI("Device %s was immediately closed after opening.", device->path.string()); 1151 if (pred) { 1152 pred->next = device->next; 1153 } else { 1154 mOpeningDevices = device->next; 1155 } 1156 delete device; 1157 } else { 1158 // Link into closing devices list. 1159 // The device will be deleted later after we have informed the client. 1160 device->next = mClosingDevices; 1161 mClosingDevices = device; 1162 } 1163 return 0; 1164} 1165 1166int EventHub::readNotify(int nfd) { 1167#ifdef HAVE_INOTIFY 1168 int res; 1169 char devname[PATH_MAX]; 1170 char *filename; 1171 char event_buf[512]; 1172 int event_size; 1173 int event_pos = 0; 1174 struct inotify_event *event; 1175 1176 LOGV("EventHub::readNotify nfd: %d\n", nfd); 1177 res = read(nfd, event_buf, sizeof(event_buf)); 1178 if(res < (int)sizeof(*event)) { 1179 if(errno == EINTR) 1180 return 0; 1181 LOGW("could not get event, %s\n", strerror(errno)); 1182 return 1; 1183 } 1184 //printf("got %d bytes of event information\n", res); 1185 1186 strcpy(devname, DEVICE_PATH); 1187 filename = devname + strlen(devname); 1188 *filename++ = '/'; 1189 1190 while(res >= (int)sizeof(*event)) { 1191 event = (struct inotify_event *)(event_buf + event_pos); 1192 //printf("%d: %08x \"%s\"\n", event->wd, event->mask, event->len ? event->name : ""); 1193 if(event->len) { 1194 strcpy(filename, event->name); 1195 if(event->mask & IN_CREATE) { 1196 openDevice(devname); 1197 } 1198 else { 1199 closeDevice(devname); 1200 } 1201 } 1202 event_size = sizeof(*event) + event->len; 1203 res -= event_size; 1204 event_pos += event_size; 1205 } 1206#endif 1207 return 0; 1208} 1209 1210int EventHub::scanDir(const char *dirname) 1211{ 1212 char devname[PATH_MAX]; 1213 char *filename; 1214 DIR *dir; 1215 struct dirent *de; 1216 dir = opendir(dirname); 1217 if(dir == NULL) 1218 return -1; 1219 strcpy(devname, dirname); 1220 filename = devname + strlen(devname); 1221 *filename++ = '/'; 1222 while((de = readdir(dir))) { 1223 if(de->d_name[0] == '.' && 1224 (de->d_name[1] == '\0' || 1225 (de->d_name[1] == '.' && de->d_name[2] == '\0'))) 1226 continue; 1227 strcpy(filename, de->d_name); 1228 openDevice(devname); 1229 } 1230 closedir(dir); 1231 return 0; 1232} 1233 1234void EventHub::reopenDevices() { 1235 android_atomic_release_store(1, &mNeedToReopenDevices); 1236} 1237 1238void EventHub::dump(String8& dump) { 1239 dump.append("Event Hub State:\n"); 1240 1241 { // acquire lock 1242 AutoMutex _l(mLock); 1243 1244 dump.appendFormat(INDENT "BuiltInKeyboardId: %d\n", mBuiltInKeyboardId); 1245 1246 dump.append(INDENT "Devices:\n"); 1247 1248 for (size_t i = FIRST_ACTUAL_DEVICE_INDEX; i < mDevices.size(); i++) { 1249 const Device* device = mDevices[i]; 1250 if (device) { 1251 if (mBuiltInKeyboardId == device->id) { 1252 dump.appendFormat(INDENT2 "%d: %s (aka device 0 - built-in keyboard)\n", 1253 device->id, device->identifier.name.string()); 1254 } else { 1255 dump.appendFormat(INDENT2 "%d: %s\n", device->id, 1256 device->identifier.name.string()); 1257 } 1258 dump.appendFormat(INDENT3 "Classes: 0x%08x\n", device->classes); 1259 dump.appendFormat(INDENT3 "Path: %s\n", device->path.string()); 1260 dump.appendFormat(INDENT3 "Location: %s\n", device->identifier.location.string()); 1261 dump.appendFormat(INDENT3 "UniqueId: %s\n", device->identifier.uniqueId.string()); 1262 dump.appendFormat(INDENT3 "Identifier: bus=0x%04x, vendor=0x%04x, " 1263 "product=0x%04x, version=0x%04x\n", 1264 device->identifier.bus, device->identifier.vendor, 1265 device->identifier.product, device->identifier.version); 1266 dump.appendFormat(INDENT3 "KeyLayoutFile: %s\n", 1267 device->keyMap.keyLayoutFile.string()); 1268 dump.appendFormat(INDENT3 "KeyCharacterMapFile: %s\n", 1269 device->keyMap.keyCharacterMapFile.string()); 1270 dump.appendFormat(INDENT3 "ConfigurationFile: %s\n", 1271 device->configurationFile.string()); 1272 } 1273 } 1274 } // release lock 1275} 1276 1277}; // namespace android 1278