EventHub.cpp revision 7218d830e27d81141588cd6e37f206d141a18f62
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), propBitmask(NULL), 106 configuration(NULL), virtualKeyMap(NULL) { 107} 108 109EventHub::Device::~Device() { 110 close(); 111 delete[] keyBitmask; 112 delete[] relBitmask; 113 delete[] propBitmask; 114 delete configuration; 115 delete virtualKeyMap; 116} 117 118void EventHub::Device::close() { 119 if (fd >= 0) { 120 ::close(fd); 121 fd = -1; 122 } 123} 124 125 126// --- EventHub --- 127 128EventHub::EventHub(void) : 129 mError(NO_INIT), mBuiltInKeyboardId(-1), mNextDeviceId(1), 130 mOpeningDevices(0), mClosingDevices(0), 131 mOpened(false), mNeedToSendFinishedDeviceScan(false), 132 mNeedToReopenDevices(0), mNeedToScanDevices(false), 133 mInputFdIndex(1) { 134 acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_ID); 135 136 memset(mSwitches, 0, sizeof(mSwitches)); 137 mNumCpus = sysconf(_SC_NPROCESSORS_ONLN); 138} 139 140EventHub::~EventHub(void) { 141 release_wake_lock(WAKE_LOCK_ID); 142 // we should free stuff here... 143} 144 145status_t EventHub::errorCheck() const { 146 return mError; 147} 148 149String8 EventHub::getDeviceName(int32_t deviceId) const { 150 AutoMutex _l(mLock); 151 Device* device = getDeviceLocked(deviceId); 152 if (device == NULL) return String8(); 153 return device->identifier.name; 154} 155 156uint32_t EventHub::getDeviceClasses(int32_t deviceId) const { 157 AutoMutex _l(mLock); 158 Device* device = getDeviceLocked(deviceId); 159 if (device == NULL) return 0; 160 return device->classes; 161} 162 163void EventHub::getConfiguration(int32_t deviceId, PropertyMap* outConfiguration) const { 164 AutoMutex _l(mLock); 165 Device* device = getDeviceLocked(deviceId); 166 if (device && device->configuration) { 167 *outConfiguration = *device->configuration; 168 } else { 169 outConfiguration->clear(); 170 } 171} 172 173status_t EventHub::getAbsoluteAxisInfo(int32_t deviceId, int axis, 174 RawAbsoluteAxisInfo* outAxisInfo) const { 175 outAxisInfo->clear(); 176 177 AutoMutex _l(mLock); 178 Device* device = getDeviceLocked(deviceId); 179 if (device == NULL) return -1; 180 181 struct input_absinfo info; 182 183 if(ioctl(device->fd, EVIOCGABS(axis), &info)) { 184 LOGW("Error reading absolute controller %d for device %s fd %d\n", 185 axis, device->identifier.name.string(), device->fd); 186 return -errno; 187 } 188 189 if (info.minimum != info.maximum) { 190 outAxisInfo->valid = true; 191 outAxisInfo->minValue = info.minimum; 192 outAxisInfo->maxValue = info.maximum; 193 outAxisInfo->flat = info.flat; 194 outAxisInfo->fuzz = info.fuzz; 195 } 196 return OK; 197} 198 199bool EventHub::hasRelativeAxis(int32_t deviceId, int axis) const { 200 if (axis >= 0 && axis <= REL_MAX) { 201 AutoMutex _l(mLock); 202 203 Device* device = getDeviceLocked(deviceId); 204 if (device && device->relBitmask) { 205 return test_bit(axis, device->relBitmask); 206 } 207 } 208 return false; 209} 210 211bool EventHub::hasInputProperty(int32_t deviceId, int property) const { 212 if (property >= 0 && property <= INPUT_PROP_MAX) { 213 AutoMutex _l(mLock); 214 215 Device* device = getDeviceLocked(deviceId); 216 if (device && device->propBitmask) { 217 return test_bit(property, device->propBitmask); 218 } 219 } 220 return false; 221} 222 223int32_t EventHub::getScanCodeState(int32_t deviceId, int32_t scanCode) const { 224 if (scanCode >= 0 && scanCode <= KEY_MAX) { 225 AutoMutex _l(mLock); 226 227 Device* device = getDeviceLocked(deviceId); 228 if (device != NULL) { 229 return getScanCodeStateLocked(device, scanCode); 230 } 231 } 232 return AKEY_STATE_UNKNOWN; 233} 234 235int32_t EventHub::getScanCodeStateLocked(Device* device, int32_t scanCode) const { 236 uint8_t key_bitmask[sizeof_bit_array(KEY_MAX + 1)]; 237 memset(key_bitmask, 0, sizeof(key_bitmask)); 238 if (ioctl(device->fd, 239 EVIOCGKEY(sizeof(key_bitmask)), key_bitmask) >= 0) { 240 return test_bit(scanCode, key_bitmask) ? AKEY_STATE_DOWN : AKEY_STATE_UP; 241 } 242 return AKEY_STATE_UNKNOWN; 243} 244 245int32_t EventHub::getKeyCodeState(int32_t deviceId, int32_t keyCode) const { 246 AutoMutex _l(mLock); 247 248 Device* device = getDeviceLocked(deviceId); 249 if (device != NULL) { 250 return getKeyCodeStateLocked(device, keyCode); 251 } 252 return AKEY_STATE_UNKNOWN; 253} 254 255int32_t EventHub::getKeyCodeStateLocked(Device* device, int32_t keyCode) const { 256 if (!device->keyMap.haveKeyLayout()) { 257 return AKEY_STATE_UNKNOWN; 258 } 259 260 Vector<int32_t> scanCodes; 261 device->keyMap.keyLayoutMap->findScanCodesForKey(keyCode, &scanCodes); 262 263 uint8_t key_bitmask[sizeof_bit_array(KEY_MAX + 1)]; 264 memset(key_bitmask, 0, sizeof(key_bitmask)); 265 if (ioctl(device->fd, EVIOCGKEY(sizeof(key_bitmask)), key_bitmask) >= 0) { 266 #if 0 267 for (size_t i=0; i<=KEY_MAX; i++) { 268 LOGI("(Scan code %d: down=%d)", i, test_bit(i, key_bitmask)); 269 } 270 #endif 271 const size_t N = scanCodes.size(); 272 for (size_t i=0; i<N && i<=KEY_MAX; i++) { 273 int32_t sc = scanCodes.itemAt(i); 274 //LOGI("Code %d: down=%d", sc, test_bit(sc, key_bitmask)); 275 if (sc >= 0 && sc <= KEY_MAX && test_bit(sc, key_bitmask)) { 276 return AKEY_STATE_DOWN; 277 } 278 } 279 return AKEY_STATE_UP; 280 } 281 return AKEY_STATE_UNKNOWN; 282} 283 284int32_t EventHub::getSwitchState(int32_t deviceId, int32_t sw) const { 285 if (sw >= 0 && sw <= SW_MAX) { 286 AutoMutex _l(mLock); 287 288 Device* device = getDeviceLocked(deviceId); 289 if (device != NULL) { 290 return getSwitchStateLocked(device, sw); 291 } 292 } 293 return AKEY_STATE_UNKNOWN; 294} 295 296int32_t EventHub::getSwitchStateLocked(Device* device, int32_t sw) const { 297 uint8_t sw_bitmask[sizeof_bit_array(SW_MAX + 1)]; 298 memset(sw_bitmask, 0, sizeof(sw_bitmask)); 299 if (ioctl(device->fd, 300 EVIOCGSW(sizeof(sw_bitmask)), sw_bitmask) >= 0) { 301 return test_bit(sw, sw_bitmask) ? AKEY_STATE_DOWN : AKEY_STATE_UP; 302 } 303 return AKEY_STATE_UNKNOWN; 304} 305 306bool EventHub::markSupportedKeyCodes(int32_t deviceId, size_t numCodes, 307 const int32_t* keyCodes, uint8_t* outFlags) const { 308 AutoMutex _l(mLock); 309 310 Device* device = getDeviceLocked(deviceId); 311 if (device != NULL) { 312 return markSupportedKeyCodesLocked(device, numCodes, keyCodes, outFlags); 313 } 314 return false; 315} 316 317bool EventHub::markSupportedKeyCodesLocked(Device* device, size_t numCodes, 318 const int32_t* keyCodes, uint8_t* outFlags) const { 319 if (!device->keyMap.haveKeyLayout() || !device->keyBitmask) { 320 return false; 321 } 322 323 Vector<int32_t> scanCodes; 324 for (size_t codeIndex = 0; codeIndex < numCodes; codeIndex++) { 325 scanCodes.clear(); 326 327 status_t err = device->keyMap.keyLayoutMap->findScanCodesForKey( 328 keyCodes[codeIndex], &scanCodes); 329 if (! err) { 330 // check the possible scan codes identified by the layout map against the 331 // map of codes actually emitted by the driver 332 for (size_t sc = 0; sc < scanCodes.size(); sc++) { 333 if (test_bit(scanCodes[sc], device->keyBitmask)) { 334 outFlags[codeIndex] = 1; 335 break; 336 } 337 } 338 } 339 } 340 return true; 341} 342 343status_t EventHub::mapKey(int32_t deviceId, int scancode, 344 int32_t* outKeycode, uint32_t* outFlags) const 345{ 346 AutoMutex _l(mLock); 347 Device* device = getDeviceLocked(deviceId); 348 349 if (device && device->keyMap.haveKeyLayout()) { 350 status_t err = device->keyMap.keyLayoutMap->mapKey(scancode, outKeycode, outFlags); 351 if (err == NO_ERROR) { 352 return NO_ERROR; 353 } 354 } 355 356 if (mBuiltInKeyboardId != -1) { 357 device = getDeviceLocked(mBuiltInKeyboardId); 358 359 if (device && device->keyMap.haveKeyLayout()) { 360 status_t err = device->keyMap.keyLayoutMap->mapKey(scancode, outKeycode, outFlags); 361 if (err == NO_ERROR) { 362 return NO_ERROR; 363 } 364 } 365 } 366 367 *outKeycode = 0; 368 *outFlags = 0; 369 return NAME_NOT_FOUND; 370} 371 372status_t EventHub::mapAxis(int32_t deviceId, int scancode, AxisInfo* outAxisInfo) const 373{ 374 AutoMutex _l(mLock); 375 Device* device = getDeviceLocked(deviceId); 376 377 if (device && device->keyMap.haveKeyLayout()) { 378 status_t err = device->keyMap.keyLayoutMap->mapAxis(scancode, outAxisInfo); 379 if (err == NO_ERROR) { 380 return NO_ERROR; 381 } 382 } 383 384 if (mBuiltInKeyboardId != -1) { 385 device = getDeviceLocked(mBuiltInKeyboardId); 386 387 if (device && device->keyMap.haveKeyLayout()) { 388 status_t err = device->keyMap.keyLayoutMap->mapAxis(scancode, outAxisInfo); 389 if (err == NO_ERROR) { 390 return NO_ERROR; 391 } 392 } 393 } 394 395 return NAME_NOT_FOUND; 396} 397 398void EventHub::setExcludedDevices(const Vector<String8>& devices) { 399 AutoMutex _l(mLock); 400 401 mExcludedDevices = devices; 402} 403 404bool EventHub::hasLed(int32_t deviceId, int32_t led) const { 405 AutoMutex _l(mLock); 406 Device* device = getDeviceLocked(deviceId); 407 if (device) { 408 uint8_t bitmask[sizeof_bit_array(LED_MAX + 1)]; 409 memset(bitmask, 0, sizeof(bitmask)); 410 if (ioctl(device->fd, EVIOCGBIT(EV_LED, sizeof(bitmask)), bitmask) >= 0) { 411 if (test_bit(led, bitmask)) { 412 return true; 413 } 414 } 415 } 416 return false; 417} 418 419void EventHub::setLedState(int32_t deviceId, int32_t led, bool on) { 420 AutoMutex _l(mLock); 421 Device* device = getDeviceLocked(deviceId); 422 if (device) { 423 struct input_event ev; 424 ev.time.tv_sec = 0; 425 ev.time.tv_usec = 0; 426 ev.type = EV_LED; 427 ev.code = led; 428 ev.value = on ? 1 : 0; 429 430 ssize_t nWrite; 431 do { 432 nWrite = write(device->fd, &ev, sizeof(struct input_event)); 433 } while (nWrite == -1 && errno == EINTR); 434 } 435} 436 437void EventHub::getVirtualKeyDefinitions(int32_t deviceId, 438 Vector<VirtualKeyDefinition>& outVirtualKeys) const { 439 outVirtualKeys.clear(); 440 441 AutoMutex _l(mLock); 442 Device* device = getDeviceLocked(deviceId); 443 if (device && device->virtualKeyMap) { 444 outVirtualKeys.appendVector(device->virtualKeyMap->getVirtualKeys()); 445 } 446} 447 448EventHub::Device* EventHub::getDeviceLocked(int32_t deviceId) const { 449 if (deviceId == 0) { 450 deviceId = mBuiltInKeyboardId; 451 } 452 453 size_t numDevices = mDevices.size(); 454 for (size_t i = FIRST_ACTUAL_DEVICE_INDEX; i < numDevices; i++) { 455 Device* device = mDevices[i]; 456 if (device->id == deviceId) { 457 return device; 458 } 459 } 460 return NULL; 461} 462 463size_t EventHub::getEvents(int timeoutMillis, RawEvent* buffer, size_t bufferSize) { 464 // Note that we only allow one caller to getEvents(), so don't need 465 // to do locking here... only when adding/removing devices. 466 LOG_ASSERT(bufferSize >= 1); 467 468 if (!mOpened) { 469 android_atomic_acquire_store(0, &mNeedToReopenDevices); 470 471 mError = openPlatformInput() ? NO_ERROR : UNKNOWN_ERROR; 472 mOpened = true; 473 mNeedToScanDevices = true; 474 } 475 476 struct input_event readBuffer[bufferSize]; 477 478 RawEvent* event = buffer; 479 size_t capacity = bufferSize; 480 for (;;) { 481 nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC); 482 483 // Reopen input devices if needed. 484 if (android_atomic_acquire_load(&mNeedToReopenDevices)) { 485 android_atomic_acquire_store(0, &mNeedToReopenDevices); 486 487 LOGI("Reopening all input devices due to a configuration change."); 488 489 AutoMutex _l(mLock); 490 while (mDevices.size() > 1) { 491 closeDeviceAtIndexLocked(mDevices.size() - 1); 492 } 493 mNeedToScanDevices = true; 494 break; // return to the caller before we actually rescan 495 } 496 497 // Report any devices that had last been added/removed. 498 while (mClosingDevices) { 499 Device* device = mClosingDevices; 500 LOGV("Reporting device closed: id=%d, name=%s\n", 501 device->id, device->path.string()); 502 mClosingDevices = device->next; 503 event->when = now; 504 event->deviceId = device->id == mBuiltInKeyboardId ? 0 : device->id; 505 event->type = DEVICE_REMOVED; 506 event += 1; 507 delete device; 508 mNeedToSendFinishedDeviceScan = true; 509 if (--capacity == 0) { 510 break; 511 } 512 } 513 514 if (mNeedToScanDevices) { 515 mNeedToScanDevices = false; 516 scanDevices(); 517 mNeedToSendFinishedDeviceScan = true; 518 } 519 520 while (mOpeningDevices != NULL) { 521 Device* device = mOpeningDevices; 522 LOGV("Reporting device opened: id=%d, name=%s\n", 523 device->id, device->path.string()); 524 mOpeningDevices = device->next; 525 event->when = now; 526 event->deviceId = device->id == mBuiltInKeyboardId ? 0 : device->id; 527 event->type = DEVICE_ADDED; 528 event += 1; 529 mNeedToSendFinishedDeviceScan = true; 530 if (--capacity == 0) { 531 break; 532 } 533 } 534 535 if (mNeedToSendFinishedDeviceScan) { 536 mNeedToSendFinishedDeviceScan = false; 537 event->when = now; 538 event->type = FINISHED_DEVICE_SCAN; 539 event += 1; 540 if (--capacity == 0) { 541 break; 542 } 543 } 544 545 // Grab the next input event. 546 // mInputFdIndex is initially 1 because index 0 is used for inotify. 547 bool deviceWasRemoved = false; 548 while (mInputFdIndex < mFds.size()) { 549 const struct pollfd& pfd = mFds[mInputFdIndex]; 550 if (pfd.revents & POLLIN) { 551 int32_t readSize = read(pfd.fd, readBuffer, sizeof(struct input_event) * capacity); 552 if (readSize < 0) { 553 if (errno == ENODEV) { 554 deviceWasRemoved = true; 555 break; 556 } 557 if (errno != EAGAIN && errno != EINTR) { 558 LOGW("could not get event (errno=%d)", errno); 559 } 560 } else if ((readSize % sizeof(struct input_event)) != 0) { 561 LOGE("could not get event (wrong size: %d)", readSize); 562 } else if (readSize == 0) { // eof 563 deviceWasRemoved = true; 564 break; 565 } else { 566 const Device* device = mDevices[mInputFdIndex]; 567 int32_t deviceId = device->id == mBuiltInKeyboardId ? 0 : device->id; 568 569 size_t count = size_t(readSize) / sizeof(struct input_event); 570 for (size_t i = 0; i < count; i++) { 571 const struct input_event& iev = readBuffer[i]; 572 LOGV("%s got: t0=%d, t1=%d, type=%d, code=%d, value=%d", 573 device->path.string(), 574 (int) iev.time.tv_sec, (int) iev.time.tv_usec, 575 iev.type, iev.code, iev.value); 576 577#ifdef HAVE_POSIX_CLOCKS 578 // Use the time specified in the event instead of the current time 579 // so that downstream code can get more accurate estimates of 580 // event dispatch latency from the time the event is enqueued onto 581 // the evdev client buffer. 582 // 583 // The event's timestamp fortuitously uses the same monotonic clock 584 // time base as the rest of Android. The kernel event device driver 585 // (drivers/input/evdev.c) obtains timestamps using ktime_get_ts(). 586 // The systemTime(SYSTEM_TIME_MONOTONIC) function we use everywhere 587 // calls clock_gettime(CLOCK_MONOTONIC) which is implemented as a 588 // system call that also queries ktime_get_ts(). 589 event->when = nsecs_t(iev.time.tv_sec) * 1000000000LL 590 + nsecs_t(iev.time.tv_usec) * 1000LL; 591 LOGV("event time %lld, now %lld", event->when, now); 592#else 593 event->when = now; 594#endif 595 event->deviceId = deviceId; 596 event->type = iev.type; 597 event->scanCode = iev.code; 598 event->value = iev.value; 599 event->keyCode = AKEYCODE_UNKNOWN; 600 event->flags = 0; 601 if (iev.type == EV_KEY && device->keyMap.haveKeyLayout()) { 602 status_t err = device->keyMap.keyLayoutMap->mapKey(iev.code, 603 &event->keyCode, &event->flags); 604 LOGV("iev.code=%d keyCode=%d flags=0x%08x err=%d\n", 605 iev.code, event->keyCode, event->flags, err); 606 } 607 event += 1; 608 } 609 capacity -= count; 610 if (capacity == 0) { 611 break; 612 } 613 } 614 } 615 mInputFdIndex += 1; 616 } 617 618 // Handle the case where a device has been removed but INotify has not yet noticed. 619 if (deviceWasRemoved) { 620 AutoMutex _l(mLock); 621 closeDeviceAtIndexLocked(mInputFdIndex); 622 continue; // report added or removed devices immediately 623 } 624 625#if HAVE_INOTIFY 626 // readNotify() will modify mFDs and mFDCount, so this must be done after 627 // processing all other events. 628 if(mFds[0].revents & POLLIN) { 629 readNotify(mFds[0].fd); 630 mFds.editItemAt(0).revents = 0; 631 mInputFdIndex = mFds.size(); 632 continue; // report added or removed devices immediately 633 } 634#endif 635 636 // Return now if we have collected any events, otherwise poll. 637 if (event != buffer) { 638 break; 639 } 640 641 // Poll for events. Mind the wake lock dance! 642 // We hold a wake lock at all times except during poll(). This works due to some 643 // subtle choreography. When a device driver has pending (unread) events, it acquires 644 // a kernel wake lock. However, once the last pending event has been read, the device 645 // driver will release the kernel wake lock. To prevent the system from going to sleep 646 // when this happens, the EventHub holds onto its own user wake lock while the client 647 // is processing events. Thus the system can only sleep if there are no events 648 // pending or currently being processed. 649 // 650 // The timeout is advisory only. If the device is asleep, it will not wake just to 651 // service the timeout. 652 release_wake_lock(WAKE_LOCK_ID); 653 654 int pollResult = poll(mFds.editArray(), mFds.size(), timeoutMillis); 655 656 acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_ID); 657 658 if (pollResult == 0) { 659 break; // timed out 660 } 661 if (pollResult < 0) { 662 // Sleep after errors to avoid locking up the system. 663 // Hopefully the error is transient. 664 if (errno != EINTR) { 665 LOGW("poll failed (errno=%d)\n", errno); 666 usleep(100000); 667 } 668 } else { 669 // On an SMP system, it is possible for the framework to read input events 670 // faster than the kernel input device driver can produce a complete packet. 671 // Because poll() wakes up as soon as the first input event becomes available, 672 // the framework will often end up reading one event at a time until the 673 // packet is complete. Instead of one call to read() returning 71 events, 674 // it could take 71 calls to read() each returning 1 event. 675 // 676 // Sleep for a short period of time after waking up from the poll() to give 677 // the kernel time to finish writing the entire packet of input events. 678 if (mNumCpus > 1) { 679 usleep(250); 680 } 681 } 682 683 // Prepare to process all of the FDs we just polled. 684 mInputFdIndex = 1; 685 } 686 687 // All done, return the number of events we read. 688 return event - buffer; 689} 690 691/* 692 * Open the platform-specific input device. 693 */ 694bool EventHub::openPlatformInput(void) { 695 /* 696 * Open platform-specific input device(s). 697 */ 698 int res, fd; 699 700#ifdef HAVE_INOTIFY 701 fd = inotify_init(); 702 res = inotify_add_watch(fd, DEVICE_PATH, IN_DELETE | IN_CREATE); 703 if(res < 0) { 704 LOGE("could not add watch for %s, %s\n", DEVICE_PATH, strerror(errno)); 705 } 706#else 707 /* 708 * The code in EventHub::getEvent assumes that mFDs[0] is an inotify fd. 709 * We allocate space for it and set it to something invalid. 710 */ 711 fd = -1; 712#endif 713 714 // Reserve fd index 0 for inotify. 715 struct pollfd pollfd; 716 pollfd.fd = fd; 717 pollfd.events = POLLIN; 718 pollfd.revents = 0; 719 mFds.push(pollfd); 720 mDevices.push(NULL); 721 return true; 722} 723 724void EventHub::scanDevices() { 725 int res = scanDir(DEVICE_PATH); 726 if(res < 0) { 727 LOGE("scan dir failed for %s\n", DEVICE_PATH); 728 } 729} 730 731// ---------------------------------------------------------------------------- 732 733static bool containsNonZeroByte(const uint8_t* array, uint32_t startIndex, uint32_t endIndex) { 734 const uint8_t* end = array + endIndex; 735 array += startIndex; 736 while (array != end) { 737 if (*(array++) != 0) { 738 return true; 739 } 740 } 741 return false; 742} 743 744static const int32_t GAMEPAD_KEYCODES[] = { 745 AKEYCODE_BUTTON_A, AKEYCODE_BUTTON_B, AKEYCODE_BUTTON_C, 746 AKEYCODE_BUTTON_X, AKEYCODE_BUTTON_Y, AKEYCODE_BUTTON_Z, 747 AKEYCODE_BUTTON_L1, AKEYCODE_BUTTON_R1, 748 AKEYCODE_BUTTON_L2, AKEYCODE_BUTTON_R2, 749 AKEYCODE_BUTTON_THUMBL, AKEYCODE_BUTTON_THUMBR, 750 AKEYCODE_BUTTON_START, AKEYCODE_BUTTON_SELECT, AKEYCODE_BUTTON_MODE, 751 AKEYCODE_BUTTON_1, AKEYCODE_BUTTON_2, AKEYCODE_BUTTON_3, AKEYCODE_BUTTON_4, 752 AKEYCODE_BUTTON_5, AKEYCODE_BUTTON_6, AKEYCODE_BUTTON_7, AKEYCODE_BUTTON_8, 753 AKEYCODE_BUTTON_9, AKEYCODE_BUTTON_10, AKEYCODE_BUTTON_11, AKEYCODE_BUTTON_12, 754 AKEYCODE_BUTTON_13, AKEYCODE_BUTTON_14, AKEYCODE_BUTTON_15, AKEYCODE_BUTTON_16, 755}; 756 757int EventHub::openDevice(const char *devicePath) { 758 char buffer[80]; 759 760 LOGV("Opening device: %s", devicePath); 761 762 AutoMutex _l(mLock); 763 764 int fd = open(devicePath, O_RDWR); 765 if(fd < 0) { 766 LOGE("could not open %s, %s\n", devicePath, strerror(errno)); 767 return -1; 768 } 769 770 InputDeviceIdentifier identifier; 771 772 // Get device name. 773 if(ioctl(fd, EVIOCGNAME(sizeof(buffer) - 1), &buffer) < 1) { 774 //fprintf(stderr, "could not get device name for %s, %s\n", devicePath, strerror(errno)); 775 } else { 776 buffer[sizeof(buffer) - 1] = '\0'; 777 identifier.name.setTo(buffer); 778 } 779 780 // Check to see if the device is on our excluded list 781 for (size_t i = 0; i < mExcludedDevices.size(); i++) { 782 const String8& item = mExcludedDevices.itemAt(i); 783 if (identifier.name == item) { 784 LOGI("ignoring event id %s driver %s\n", devicePath, item.string()); 785 close(fd); 786 return -1; 787 } 788 } 789 790 // Get device driver version. 791 int driverVersion; 792 if(ioctl(fd, EVIOCGVERSION, &driverVersion)) { 793 LOGE("could not get driver version for %s, %s\n", devicePath, strerror(errno)); 794 close(fd); 795 return -1; 796 } 797 798 // Get device identifier. 799 struct input_id inputId; 800 if(ioctl(fd, EVIOCGID, &inputId)) { 801 LOGE("could not get device input id for %s, %s\n", devicePath, strerror(errno)); 802 close(fd); 803 return -1; 804 } 805 identifier.bus = inputId.bustype; 806 identifier.product = inputId.product; 807 identifier.vendor = inputId.vendor; 808 identifier.version = inputId.version; 809 810 // Get device physical location. 811 if(ioctl(fd, EVIOCGPHYS(sizeof(buffer) - 1), &buffer) < 1) { 812 //fprintf(stderr, "could not get location for %s, %s\n", devicePath, strerror(errno)); 813 } else { 814 buffer[sizeof(buffer) - 1] = '\0'; 815 identifier.location.setTo(buffer); 816 } 817 818 // Get device unique id. 819 if(ioctl(fd, EVIOCGUNIQ(sizeof(buffer) - 1), &buffer) < 1) { 820 //fprintf(stderr, "could not get idstring for %s, %s\n", devicePath, strerror(errno)); 821 } else { 822 buffer[sizeof(buffer) - 1] = '\0'; 823 identifier.uniqueId.setTo(buffer); 824 } 825 826 // Make file descriptor non-blocking for use with poll(). 827 if (fcntl(fd, F_SETFL, O_NONBLOCK)) { 828 LOGE("Error %d making device file descriptor non-blocking.", errno); 829 close(fd); 830 return -1; 831 } 832 833 // Allocate device. (The device object takes ownership of the fd at this point.) 834 int32_t deviceId = mNextDeviceId++; 835 Device* device = new Device(fd, deviceId, String8(devicePath), identifier); 836 837#if 0 838 LOGI("add device %d: %s\n", deviceId, devicePath); 839 LOGI(" bus: %04x\n" 840 " vendor %04x\n" 841 " product %04x\n" 842 " version %04x\n", 843 identifier.bus, identifier.vendor, identifier.product, identifier.version); 844 LOGI(" name: \"%s\"\n", identifier.name.string()); 845 LOGI(" location: \"%s\"\n", identifier.location.string()); 846 LOGI(" unique id: \"%s\"\n", identifier.uniqueId.string()); 847 LOGI(" driver: v%d.%d.%d\n", 848 driverVersion >> 16, (driverVersion >> 8) & 0xff, driverVersion & 0xff); 849#endif 850 851 // Load the configuration file for the device. 852 loadConfiguration(device); 853 854 // Figure out the kinds of events the device reports. 855 uint8_t key_bitmask[sizeof_bit_array(KEY_MAX + 1)]; 856 memset(key_bitmask, 0, sizeof(key_bitmask)); 857 ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(key_bitmask)), key_bitmask); 858 859 uint8_t abs_bitmask[sizeof_bit_array(ABS_MAX + 1)]; 860 memset(abs_bitmask, 0, sizeof(abs_bitmask)); 861 ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(abs_bitmask)), abs_bitmask); 862 863 uint8_t rel_bitmask[sizeof_bit_array(REL_MAX + 1)]; 864 memset(rel_bitmask, 0, sizeof(rel_bitmask)); 865 ioctl(fd, EVIOCGBIT(EV_REL, sizeof(rel_bitmask)), rel_bitmask); 866 867 uint8_t sw_bitmask[sizeof_bit_array(SW_MAX + 1)]; 868 memset(sw_bitmask, 0, sizeof(sw_bitmask)); 869 ioctl(fd, EVIOCGBIT(EV_SW, sizeof(sw_bitmask)), sw_bitmask); 870 871 uint8_t prop_bitmask[sizeof_bit_array(INPUT_PROP_MAX + 1)]; 872 memset(prop_bitmask, 0, sizeof(prop_bitmask)); 873 ioctl(fd, EVIOCGPROP(sizeof(prop_bitmask)), prop_bitmask); 874 875 device->keyBitmask = new uint8_t[sizeof(key_bitmask)]; 876 device->relBitmask = new uint8_t[sizeof(rel_bitmask)]; 877 device->propBitmask = new uint8_t[sizeof(prop_bitmask)]; 878 879 if (!device->keyBitmask || !device->relBitmask || !device->propBitmask) { 880 delete device; 881 LOGE("out of memory allocating bitmasks"); 882 return -1; 883 } 884 885 memcpy(device->keyBitmask, key_bitmask, sizeof(key_bitmask)); 886 memcpy(device->relBitmask, rel_bitmask, sizeof(rel_bitmask)); 887 memcpy(device->propBitmask, prop_bitmask, sizeof(prop_bitmask)); 888 889 // See if this is a keyboard. Ignore everything in the button range except for 890 // joystick and gamepad buttons which are handled like keyboards for the most part. 891 bool haveKeyboardKeys = containsNonZeroByte(key_bitmask, 0, sizeof_bit_array(BTN_MISC)) 892 || containsNonZeroByte(key_bitmask, sizeof_bit_array(KEY_OK), 893 sizeof_bit_array(KEY_MAX + 1)); 894 bool haveGamepadButtons = containsNonZeroByte(key_bitmask, sizeof_bit_array(BTN_MISC), 895 sizeof_bit_array(BTN_MOUSE)) 896 || containsNonZeroByte(key_bitmask, sizeof_bit_array(BTN_JOYSTICK), 897 sizeof_bit_array(BTN_DIGI)); 898 if (haveKeyboardKeys || haveGamepadButtons) { 899 device->classes |= INPUT_DEVICE_CLASS_KEYBOARD; 900 } 901 902 // See if this is a cursor device such as a trackball or mouse. 903 if (test_bit(BTN_MOUSE, key_bitmask) 904 && test_bit(REL_X, rel_bitmask) 905 && test_bit(REL_Y, rel_bitmask)) { 906 device->classes |= INPUT_DEVICE_CLASS_CURSOR; 907 } 908 909 // See if this is a touch pad. 910 // Is this a new modern multi-touch driver? 911 if (test_bit(ABS_MT_POSITION_X, abs_bitmask) 912 && test_bit(ABS_MT_POSITION_Y, abs_bitmask)) { 913 // Some joysticks such as the PS3 controller report axes that conflict 914 // with the ABS_MT range. Try to confirm that the device really is 915 // a touch screen. 916 if (test_bit(BTN_TOUCH, key_bitmask) || !haveGamepadButtons) { 917 device->classes |= INPUT_DEVICE_CLASS_TOUCH | INPUT_DEVICE_CLASS_TOUCH_MT; 918 } 919 // Is this an old style single-touch driver? 920 } else if (test_bit(BTN_TOUCH, key_bitmask) 921 && test_bit(ABS_X, abs_bitmask) 922 && test_bit(ABS_Y, abs_bitmask)) { 923 device->classes |= INPUT_DEVICE_CLASS_TOUCH; 924 } 925 926 // See if this device is a joystick. 927 // Ignore touchscreens because they use the same absolute axes for other purposes. 928 // Assumes that joysticks always have gamepad buttons in order to distinguish them 929 // from other devices such as accelerometers that also have absolute axes. 930 if (haveGamepadButtons 931 && !(device->classes & INPUT_DEVICE_CLASS_TOUCH) 932 && containsNonZeroByte(abs_bitmask, 0, sizeof_bit_array(ABS_MAX + 1))) { 933 device->classes |= INPUT_DEVICE_CLASS_JOYSTICK; 934 } 935 936 // figure out the switches this device reports 937 bool haveSwitches = false; 938 for (int i=0; i<EV_SW; i++) { 939 //LOGI("Device %d sw %d: has=%d", device->id, i, test_bit(i, sw_bitmask)); 940 if (test_bit(i, sw_bitmask)) { 941 haveSwitches = true; 942 if (mSwitches[i] == 0) { 943 mSwitches[i] = device->id; 944 } 945 } 946 } 947 if (haveSwitches) { 948 device->classes |= INPUT_DEVICE_CLASS_SWITCH; 949 } 950 951 if ((device->classes & INPUT_DEVICE_CLASS_TOUCH)) { 952 // Load the virtual keys for the touch screen, if any. 953 // We do this now so that we can make sure to load the keymap if necessary. 954 status_t status = loadVirtualKeyMap(device); 955 if (!status) { 956 device->classes |= INPUT_DEVICE_CLASS_KEYBOARD; 957 } 958 } 959 960 // Load the key map. 961 // We need to do this for joysticks too because the key layout may specify axes. 962 status_t keyMapStatus = NAME_NOT_FOUND; 963 if (device->classes & (INPUT_DEVICE_CLASS_KEYBOARD | INPUT_DEVICE_CLASS_JOYSTICK)) { 964 // Load the keymap for the device. 965 keyMapStatus = loadKeyMap(device); 966 } 967 968 // Configure the keyboard, gamepad or virtual keyboard. 969 if (device->classes & INPUT_DEVICE_CLASS_KEYBOARD) { 970 // Set system properties for the keyboard. 971 setKeyboardProperties(device, false); 972 973 // Register the keyboard as a built-in keyboard if it is eligible. 974 if (!keyMapStatus 975 && mBuiltInKeyboardId == -1 976 && isEligibleBuiltInKeyboard(device->identifier, 977 device->configuration, &device->keyMap)) { 978 mBuiltInKeyboardId = device->id; 979 setKeyboardProperties(device, true); 980 } 981 982 // 'Q' key support = cheap test of whether this is an alpha-capable kbd 983 if (hasKeycodeLocked(device, AKEYCODE_Q)) { 984 device->classes |= INPUT_DEVICE_CLASS_ALPHAKEY; 985 } 986 987 // See if this device has a DPAD. 988 if (hasKeycodeLocked(device, AKEYCODE_DPAD_UP) && 989 hasKeycodeLocked(device, AKEYCODE_DPAD_DOWN) && 990 hasKeycodeLocked(device, AKEYCODE_DPAD_LEFT) && 991 hasKeycodeLocked(device, AKEYCODE_DPAD_RIGHT) && 992 hasKeycodeLocked(device, AKEYCODE_DPAD_CENTER)) { 993 device->classes |= INPUT_DEVICE_CLASS_DPAD; 994 } 995 996 // See if this device has a gamepad. 997 for (size_t i = 0; i < sizeof(GAMEPAD_KEYCODES)/sizeof(GAMEPAD_KEYCODES[0]); i++) { 998 if (hasKeycodeLocked(device, GAMEPAD_KEYCODES[i])) { 999 device->classes |= INPUT_DEVICE_CLASS_GAMEPAD; 1000 break; 1001 } 1002 } 1003 } 1004 1005 // If the device isn't recognized as something we handle, don't monitor it. 1006 if (device->classes == 0) { 1007 LOGV("Dropping device: id=%d, path='%s', name='%s'", 1008 deviceId, devicePath, device->identifier.name.string()); 1009 delete device; 1010 return -1; 1011 } 1012 1013 // Determine whether the device is external or internal. 1014 if (isExternalDevice(device)) { 1015 device->classes |= INPUT_DEVICE_CLASS_EXTERNAL; 1016 } 1017 1018 LOGI("New device: id=%d, fd=%d, path='%s', name='%s', classes=0x%x, " 1019 "configuration='%s', keyLayout='%s', keyCharacterMap='%s', builtinKeyboard=%s", 1020 deviceId, fd, devicePath, device->identifier.name.string(), 1021 device->classes, 1022 device->configurationFile.string(), 1023 device->keyMap.keyLayoutFile.string(), 1024 device->keyMap.keyCharacterMapFile.string(), 1025 toString(mBuiltInKeyboardId == deviceId)); 1026 1027 struct pollfd pollfd; 1028 pollfd.fd = fd; 1029 pollfd.events = POLLIN; 1030 pollfd.revents = 0; 1031 mFds.push(pollfd); 1032 mDevices.push(device); 1033 1034 device->next = mOpeningDevices; 1035 mOpeningDevices = device; 1036 return 0; 1037} 1038 1039void EventHub::loadConfiguration(Device* device) { 1040 device->configurationFile = getInputDeviceConfigurationFilePathByDeviceIdentifier( 1041 device->identifier, INPUT_DEVICE_CONFIGURATION_FILE_TYPE_CONFIGURATION); 1042 if (device->configurationFile.isEmpty()) { 1043 LOGD("No input device configuration file found for device '%s'.", 1044 device->identifier.name.string()); 1045 } else { 1046 status_t status = PropertyMap::load(device->configurationFile, 1047 &device->configuration); 1048 if (status) { 1049 LOGE("Error loading input device configuration file for device '%s'. " 1050 "Using default configuration.", 1051 device->identifier.name.string()); 1052 } 1053 } 1054} 1055 1056status_t EventHub::loadVirtualKeyMap(Device* device) { 1057 // The virtual key map is supplied by the kernel as a system board property file. 1058 String8 path; 1059 path.append("/sys/board_properties/virtualkeys."); 1060 path.append(device->identifier.name); 1061 if (access(path.string(), R_OK)) { 1062 return NAME_NOT_FOUND; 1063 } 1064 return VirtualKeyMap::load(path, &device->virtualKeyMap); 1065} 1066 1067status_t EventHub::loadKeyMap(Device* device) { 1068 return device->keyMap.load(device->identifier, device->configuration); 1069} 1070 1071void EventHub::setKeyboardProperties(Device* device, bool builtInKeyboard) { 1072 int32_t id = builtInKeyboard ? 0 : device->id; 1073 android::setKeyboardProperties(id, device->identifier, 1074 device->keyMap.keyLayoutFile, device->keyMap.keyCharacterMapFile); 1075} 1076 1077void EventHub::clearKeyboardProperties(Device* device, bool builtInKeyboard) { 1078 int32_t id = builtInKeyboard ? 0 : device->id; 1079 android::clearKeyboardProperties(id); 1080} 1081 1082bool EventHub::isExternalDevice(Device* device) { 1083 if (device->configuration) { 1084 bool value; 1085 if (device->configuration->tryGetProperty(String8("device.internal"), value) 1086 && value) { 1087 return false; 1088 } 1089 } 1090 return device->identifier.bus == BUS_USB || device->identifier.bus == BUS_BLUETOOTH; 1091} 1092 1093bool EventHub::hasKeycodeLocked(Device* device, int keycode) const { 1094 if (!device->keyMap.haveKeyLayout() || !device->keyBitmask) { 1095 return false; 1096 } 1097 1098 Vector<int32_t> scanCodes; 1099 device->keyMap.keyLayoutMap->findScanCodesForKey(keycode, &scanCodes); 1100 const size_t N = scanCodes.size(); 1101 for (size_t i=0; i<N && i<=KEY_MAX; i++) { 1102 int32_t sc = scanCodes.itemAt(i); 1103 if (sc >= 0 && sc <= KEY_MAX && test_bit(sc, device->keyBitmask)) { 1104 return true; 1105 } 1106 } 1107 1108 return false; 1109} 1110 1111int EventHub::closeDevice(const char *devicePath) { 1112 AutoMutex _l(mLock); 1113 1114 for (size_t i = FIRST_ACTUAL_DEVICE_INDEX; i < mDevices.size(); i++) { 1115 Device* device = mDevices[i]; 1116 if (device->path == devicePath) { 1117 return closeDeviceAtIndexLocked(i); 1118 } 1119 } 1120 LOGV("Remove device: %s not found, device may already have been removed.", devicePath); 1121 return -1; 1122} 1123 1124int EventHub::closeDeviceAtIndexLocked(int index) { 1125 Device* device = mDevices[index]; 1126 LOGI("Removed device: path=%s name=%s id=%d fd=%d classes=0x%x\n", 1127 device->path.string(), device->identifier.name.string(), device->id, 1128 device->fd, device->classes); 1129 1130 for (int j=0; j<EV_SW; j++) { 1131 if (mSwitches[j] == device->id) { 1132 mSwitches[j] = 0; 1133 } 1134 } 1135 1136 if (device->id == mBuiltInKeyboardId) { 1137 LOGW("built-in keyboard device %s (id=%d) is closing! the apps will not like this", 1138 device->path.string(), mBuiltInKeyboardId); 1139 mBuiltInKeyboardId = -1; 1140 clearKeyboardProperties(device, true); 1141 } 1142 clearKeyboardProperties(device, false); 1143 1144 mFds.removeAt(index); 1145 mDevices.removeAt(index); 1146 device->close(); 1147 1148 // Unlink for opening devices list if it is present. 1149 Device* pred = NULL; 1150 bool found = false; 1151 for (Device* entry = mOpeningDevices; entry != NULL; ) { 1152 if (entry == device) { 1153 found = true; 1154 break; 1155 } 1156 pred = entry; 1157 entry = entry->next; 1158 } 1159 if (found) { 1160 // Unlink the device from the opening devices list then delete it. 1161 // We don't need to tell the client that the device was closed because 1162 // it does not even know it was opened in the first place. 1163 LOGI("Device %s was immediately closed after opening.", device->path.string()); 1164 if (pred) { 1165 pred->next = device->next; 1166 } else { 1167 mOpeningDevices = device->next; 1168 } 1169 delete device; 1170 } else { 1171 // Link into closing devices list. 1172 // The device will be deleted later after we have informed the client. 1173 device->next = mClosingDevices; 1174 mClosingDevices = device; 1175 } 1176 return 0; 1177} 1178 1179int EventHub::readNotify(int nfd) { 1180#ifdef HAVE_INOTIFY 1181 int res; 1182 char devname[PATH_MAX]; 1183 char *filename; 1184 char event_buf[512]; 1185 int event_size; 1186 int event_pos = 0; 1187 struct inotify_event *event; 1188 1189 LOGV("EventHub::readNotify nfd: %d\n", nfd); 1190 res = read(nfd, event_buf, sizeof(event_buf)); 1191 if(res < (int)sizeof(*event)) { 1192 if(errno == EINTR) 1193 return 0; 1194 LOGW("could not get event, %s\n", strerror(errno)); 1195 return 1; 1196 } 1197 //printf("got %d bytes of event information\n", res); 1198 1199 strcpy(devname, DEVICE_PATH); 1200 filename = devname + strlen(devname); 1201 *filename++ = '/'; 1202 1203 while(res >= (int)sizeof(*event)) { 1204 event = (struct inotify_event *)(event_buf + event_pos); 1205 //printf("%d: %08x \"%s\"\n", event->wd, event->mask, event->len ? event->name : ""); 1206 if(event->len) { 1207 strcpy(filename, event->name); 1208 if(event->mask & IN_CREATE) { 1209 openDevice(devname); 1210 } 1211 else { 1212 closeDevice(devname); 1213 } 1214 } 1215 event_size = sizeof(*event) + event->len; 1216 res -= event_size; 1217 event_pos += event_size; 1218 } 1219#endif 1220 return 0; 1221} 1222 1223int EventHub::scanDir(const char *dirname) 1224{ 1225 char devname[PATH_MAX]; 1226 char *filename; 1227 DIR *dir; 1228 struct dirent *de; 1229 dir = opendir(dirname); 1230 if(dir == NULL) 1231 return -1; 1232 strcpy(devname, dirname); 1233 filename = devname + strlen(devname); 1234 *filename++ = '/'; 1235 while((de = readdir(dir))) { 1236 if(de->d_name[0] == '.' && 1237 (de->d_name[1] == '\0' || 1238 (de->d_name[1] == '.' && de->d_name[2] == '\0'))) 1239 continue; 1240 strcpy(filename, de->d_name); 1241 openDevice(devname); 1242 } 1243 closedir(dir); 1244 return 0; 1245} 1246 1247void EventHub::reopenDevices() { 1248 android_atomic_release_store(1, &mNeedToReopenDevices); 1249} 1250 1251void EventHub::dump(String8& dump) { 1252 dump.append("Event Hub State:\n"); 1253 1254 { // acquire lock 1255 AutoMutex _l(mLock); 1256 1257 dump.appendFormat(INDENT "BuiltInKeyboardId: %d\n", mBuiltInKeyboardId); 1258 1259 dump.append(INDENT "Devices:\n"); 1260 1261 for (size_t i = FIRST_ACTUAL_DEVICE_INDEX; i < mDevices.size(); i++) { 1262 const Device* device = mDevices[i]; 1263 if (device) { 1264 if (mBuiltInKeyboardId == device->id) { 1265 dump.appendFormat(INDENT2 "%d: %s (aka device 0 - built-in keyboard)\n", 1266 device->id, device->identifier.name.string()); 1267 } else { 1268 dump.appendFormat(INDENT2 "%d: %s\n", device->id, 1269 device->identifier.name.string()); 1270 } 1271 dump.appendFormat(INDENT3 "Classes: 0x%08x\n", device->classes); 1272 dump.appendFormat(INDENT3 "Path: %s\n", device->path.string()); 1273 dump.appendFormat(INDENT3 "Location: %s\n", device->identifier.location.string()); 1274 dump.appendFormat(INDENT3 "UniqueId: %s\n", device->identifier.uniqueId.string()); 1275 dump.appendFormat(INDENT3 "Identifier: bus=0x%04x, vendor=0x%04x, " 1276 "product=0x%04x, version=0x%04x\n", 1277 device->identifier.bus, device->identifier.vendor, 1278 device->identifier.product, device->identifier.version); 1279 dump.appendFormat(INDENT3 "KeyLayoutFile: %s\n", 1280 device->keyMap.keyLayoutFile.string()); 1281 dump.appendFormat(INDENT3 "KeyCharacterMapFile: %s\n", 1282 device->keyMap.keyCharacterMapFile.string()); 1283 dump.appendFormat(INDENT3 "ConfigurationFile: %s\n", 1284 device->configurationFile.string()); 1285 } 1286 } 1287 } // release lock 1288} 1289 1290}; // namespace android 1291