| // |
| // Copyright 2005 The Android Open Source Project |
| // |
| // Handle events, like key input and vsync. |
| // |
| // The goal is to provide an optimized solution for Linux, not an |
| // implementation that works well across all platforms. We expect |
| // events to arrive on file descriptors, so that we can use a select() |
| // select() call to sleep. |
| // |
| // We can't select() on anything but network sockets in Windows, so we |
| // provide an alternative implementation of waitEvent for that platform. |
| // |
| #define LOG_TAG "EventHub" |
| |
| //#define LOG_NDEBUG 0 |
| |
| #include <ui/EventHub.h> |
| #include <hardware_legacy/power.h> |
| |
| #include <cutils/properties.h> |
| #include <utils/Log.h> |
| #include <utils/Timers.h> |
| #include <utils/threads.h> |
| #include <utils/Errors.h> |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <memory.h> |
| #include <errno.h> |
| #include <assert.h> |
| |
| #include <ui/KeyLayoutMap.h> |
| #include <ui/KeyCharacterMap.h> |
| #include <ui/VirtualKeyMap.h> |
| |
| #include <string.h> |
| #include <stdint.h> |
| #include <dirent.h> |
| #ifdef HAVE_INOTIFY |
| # include <sys/inotify.h> |
| #endif |
| #ifdef HAVE_ANDROID_OS |
| # include <sys/limits.h> /* not part of Linux */ |
| #endif |
| #include <sys/poll.h> |
| #include <sys/ioctl.h> |
| |
| /* this macro is used to tell if "bit" is set in "array" |
| * it selects a byte from the array, and does a boolean AND |
| * operation with a byte that only has the relevant bit set. |
| * eg. to check for the 12th bit, we do (array[1] & 1<<4) |
| */ |
| #define test_bit(bit, array) (array[bit/8] & (1<<(bit%8))) |
| |
| /* this macro computes the number of bytes needed to represent a bit array of the specified size */ |
| #define sizeof_bit_array(bits) ((bits + 7) / 8) |
| |
| #ifndef ABS_MT_TOUCH_MAJOR |
| #define ABS_MT_TOUCH_MAJOR 0x30 /* Major axis of touching ellipse */ |
| #endif |
| |
| #ifndef ABS_MT_POSITION_X |
| #define ABS_MT_POSITION_X 0x35 /* Center X ellipse position */ |
| #endif |
| |
| #ifndef ABS_MT_POSITION_Y |
| #define ABS_MT_POSITION_Y 0x36 /* Center Y ellipse position */ |
| #endif |
| |
| // Fd at index 0 is always reserved for inotify |
| #define FIRST_ACTUAL_DEVICE_INDEX 1 |
| |
| #define INDENT " " |
| #define INDENT2 " " |
| #define INDENT3 " " |
| |
| namespace android { |
| |
| static const char *WAKE_LOCK_ID = "KeyEvents"; |
| static const char *DEVICE_PATH = "/dev/input"; |
| |
| /* return the larger integer */ |
| static inline int max(int v1, int v2) |
| { |
| return (v1 > v2) ? v1 : v2; |
| } |
| |
| static inline const char* toString(bool value) { |
| return value ? "true" : "false"; |
| } |
| |
| // --- EventHub::Device --- |
| |
| EventHub::Device::Device(int fd, int32_t id, const String8& path, |
| const InputDeviceIdentifier& identifier) : |
| next(NULL), |
| fd(fd), id(id), path(path), identifier(identifier), |
| classes(0), keyBitmask(NULL), configuration(NULL), virtualKeyMap(NULL) { |
| } |
| |
| EventHub::Device::~Device() { |
| close(); |
| delete[] keyBitmask; |
| delete configuration; |
| delete virtualKeyMap; |
| } |
| |
| void EventHub::Device::close() { |
| if (fd >= 0) { |
| ::close(fd); |
| fd = -1; |
| } |
| } |
| |
| |
| // --- EventHub --- |
| |
| EventHub::EventHub(void) : |
| mError(NO_INIT), mBuiltInKeyboardId(-1), mNextDeviceId(1), |
| mOpeningDevices(0), mClosingDevices(0), |
| mOpened(false), mNeedToSendFinishedDeviceScan(false), |
| mInputBufferIndex(0), mInputBufferCount(0), mInputFdIndex(0) { |
| acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_ID); |
| #ifdef EV_SW |
| memset(mSwitches, 0, sizeof(mSwitches)); |
| #endif |
| } |
| |
| EventHub::~EventHub(void) { |
| release_wake_lock(WAKE_LOCK_ID); |
| // we should free stuff here... |
| } |
| |
| status_t EventHub::errorCheck() const { |
| return mError; |
| } |
| |
| String8 EventHub::getDeviceName(int32_t deviceId) const { |
| AutoMutex _l(mLock); |
| Device* device = getDeviceLocked(deviceId); |
| if (device == NULL) return String8(); |
| return device->identifier.name; |
| } |
| |
| uint32_t EventHub::getDeviceClasses(int32_t deviceId) const { |
| AutoMutex _l(mLock); |
| Device* device = getDeviceLocked(deviceId); |
| if (device == NULL) return 0; |
| return device->classes; |
| } |
| |
| void EventHub::getConfiguration(int32_t deviceId, PropertyMap* outConfiguration) const { |
| AutoMutex _l(mLock); |
| Device* device = getDeviceLocked(deviceId); |
| if (device && device->configuration) { |
| *outConfiguration = *device->configuration; |
| } else { |
| outConfiguration->clear(); |
| } |
| } |
| |
| status_t EventHub::getAbsoluteAxisInfo(int32_t deviceId, int axis, |
| RawAbsoluteAxisInfo* outAxisInfo) const { |
| outAxisInfo->clear(); |
| |
| AutoMutex _l(mLock); |
| Device* device = getDeviceLocked(deviceId); |
| if (device == NULL) return -1; |
| |
| struct input_absinfo info; |
| |
| if(ioctl(device->fd, EVIOCGABS(axis), &info)) { |
| LOGW("Error reading absolute controller %d for device %s fd %d\n", |
| axis, device->identifier.name.string(), device->fd); |
| return -errno; |
| } |
| |
| if (info.minimum != info.maximum) { |
| outAxisInfo->valid = true; |
| outAxisInfo->minValue = info.minimum; |
| outAxisInfo->maxValue = info.maximum; |
| outAxisInfo->flat = info.flat; |
| outAxisInfo->fuzz = info.fuzz; |
| } |
| return OK; |
| } |
| |
| int32_t EventHub::getScanCodeState(int32_t deviceId, int32_t scanCode) const { |
| if (scanCode >= 0 && scanCode <= KEY_MAX) { |
| AutoMutex _l(mLock); |
| |
| Device* device = getDeviceLocked(deviceId); |
| if (device != NULL) { |
| return getScanCodeStateLocked(device, scanCode); |
| } |
| } |
| return AKEY_STATE_UNKNOWN; |
| } |
| |
| int32_t EventHub::getScanCodeStateLocked(Device* device, int32_t scanCode) const { |
| uint8_t key_bitmask[sizeof_bit_array(KEY_MAX + 1)]; |
| memset(key_bitmask, 0, sizeof(key_bitmask)); |
| if (ioctl(device->fd, |
| EVIOCGKEY(sizeof(key_bitmask)), key_bitmask) >= 0) { |
| return test_bit(scanCode, key_bitmask) ? AKEY_STATE_DOWN : AKEY_STATE_UP; |
| } |
| return AKEY_STATE_UNKNOWN; |
| } |
| |
| int32_t EventHub::getKeyCodeState(int32_t deviceId, int32_t keyCode) const { |
| AutoMutex _l(mLock); |
| |
| Device* device = getDeviceLocked(deviceId); |
| if (device != NULL) { |
| return getKeyCodeStateLocked(device, keyCode); |
| } |
| return AKEY_STATE_UNKNOWN; |
| } |
| |
| int32_t EventHub::getKeyCodeStateLocked(Device* device, int32_t keyCode) const { |
| if (!device->keyMap.haveKeyLayout()) { |
| return AKEY_STATE_UNKNOWN; |
| } |
| |
| Vector<int32_t> scanCodes; |
| device->keyMap.keyLayoutMap->findScanCodes(keyCode, &scanCodes); |
| |
| uint8_t key_bitmask[sizeof_bit_array(KEY_MAX + 1)]; |
| memset(key_bitmask, 0, sizeof(key_bitmask)); |
| if (ioctl(device->fd, EVIOCGKEY(sizeof(key_bitmask)), key_bitmask) >= 0) { |
| #if 0 |
| for (size_t i=0; i<=KEY_MAX; i++) { |
| LOGI("(Scan code %d: down=%d)", i, test_bit(i, key_bitmask)); |
| } |
| #endif |
| const size_t N = scanCodes.size(); |
| for (size_t i=0; i<N && i<=KEY_MAX; i++) { |
| int32_t sc = scanCodes.itemAt(i); |
| //LOGI("Code %d: down=%d", sc, test_bit(sc, key_bitmask)); |
| if (sc >= 0 && sc <= KEY_MAX && test_bit(sc, key_bitmask)) { |
| return AKEY_STATE_DOWN; |
| } |
| } |
| return AKEY_STATE_UP; |
| } |
| return AKEY_STATE_UNKNOWN; |
| } |
| |
| int32_t EventHub::getSwitchState(int32_t deviceId, int32_t sw) const { |
| #ifdef EV_SW |
| if (sw >= 0 && sw <= SW_MAX) { |
| AutoMutex _l(mLock); |
| |
| Device* device = getDeviceLocked(deviceId); |
| if (device != NULL) { |
| return getSwitchStateLocked(device, sw); |
| } |
| } |
| #endif |
| return AKEY_STATE_UNKNOWN; |
| } |
| |
| int32_t EventHub::getSwitchStateLocked(Device* device, int32_t sw) const { |
| uint8_t sw_bitmask[sizeof_bit_array(SW_MAX + 1)]; |
| memset(sw_bitmask, 0, sizeof(sw_bitmask)); |
| if (ioctl(device->fd, |
| EVIOCGSW(sizeof(sw_bitmask)), sw_bitmask) >= 0) { |
| return test_bit(sw, sw_bitmask) ? AKEY_STATE_DOWN : AKEY_STATE_UP; |
| } |
| return AKEY_STATE_UNKNOWN; |
| } |
| |
| bool EventHub::markSupportedKeyCodes(int32_t deviceId, size_t numCodes, |
| const int32_t* keyCodes, uint8_t* outFlags) const { |
| AutoMutex _l(mLock); |
| |
| Device* device = getDeviceLocked(deviceId); |
| if (device != NULL) { |
| return markSupportedKeyCodesLocked(device, numCodes, keyCodes, outFlags); |
| } |
| return false; |
| } |
| |
| bool EventHub::markSupportedKeyCodesLocked(Device* device, size_t numCodes, |
| const int32_t* keyCodes, uint8_t* outFlags) const { |
| if (!device->keyMap.haveKeyLayout() || !device->keyBitmask) { |
| return false; |
| } |
| |
| Vector<int32_t> scanCodes; |
| for (size_t codeIndex = 0; codeIndex < numCodes; codeIndex++) { |
| scanCodes.clear(); |
| |
| status_t err = device->keyMap.keyLayoutMap->findScanCodes(keyCodes[codeIndex], &scanCodes); |
| if (! err) { |
| // check the possible scan codes identified by the layout map against the |
| // map of codes actually emitted by the driver |
| for (size_t sc = 0; sc < scanCodes.size(); sc++) { |
| if (test_bit(scanCodes[sc], device->keyBitmask)) { |
| outFlags[codeIndex] = 1; |
| break; |
| } |
| } |
| } |
| } |
| return true; |
| } |
| |
| status_t EventHub::scancodeToKeycode(int32_t deviceId, int scancode, |
| int32_t* outKeycode, uint32_t* outFlags) const |
| { |
| AutoMutex _l(mLock); |
| Device* device = getDeviceLocked(deviceId); |
| |
| if (device && device->keyMap.haveKeyLayout()) { |
| status_t err = device->keyMap.keyLayoutMap->map(scancode, outKeycode, outFlags); |
| if (err == NO_ERROR) { |
| return NO_ERROR; |
| } |
| } |
| |
| if (mBuiltInKeyboardId != -1) { |
| device = getDeviceLocked(mBuiltInKeyboardId); |
| |
| if (device && device->keyMap.haveKeyLayout()) { |
| status_t err = device->keyMap.keyLayoutMap->map(scancode, outKeycode, outFlags); |
| if (err == NO_ERROR) { |
| return NO_ERROR; |
| } |
| } |
| } |
| |
| *outKeycode = 0; |
| *outFlags = 0; |
| return NAME_NOT_FOUND; |
| } |
| |
| void EventHub::addExcludedDevice(const char* deviceName) |
| { |
| AutoMutex _l(mLock); |
| |
| String8 name(deviceName); |
| mExcludedDevices.push_back(name); |
| } |
| |
| bool EventHub::hasLed(int32_t deviceId, int32_t led) const { |
| AutoMutex _l(mLock); |
| Device* device = getDeviceLocked(deviceId); |
| if (device) { |
| uint8_t bitmask[sizeof_bit_array(LED_MAX + 1)]; |
| memset(bitmask, 0, sizeof(bitmask)); |
| if (ioctl(device->fd, EVIOCGBIT(EV_LED, sizeof(bitmask)), bitmask) >= 0) { |
| if (test_bit(led, bitmask)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| void EventHub::setLedState(int32_t deviceId, int32_t led, bool on) { |
| AutoMutex _l(mLock); |
| Device* device = getDeviceLocked(deviceId); |
| if (device) { |
| struct input_event ev; |
| ev.time.tv_sec = 0; |
| ev.time.tv_usec = 0; |
| ev.type = EV_LED; |
| ev.code = led; |
| ev.value = on ? 1 : 0; |
| |
| ssize_t nWrite; |
| do { |
| nWrite = write(device->fd, &ev, sizeof(struct input_event)); |
| } while (nWrite == -1 && errno == EINTR); |
| } |
| } |
| |
| void EventHub::getVirtualKeyDefinitions(int32_t deviceId, |
| Vector<VirtualKeyDefinition>& outVirtualKeys) const { |
| outVirtualKeys.clear(); |
| |
| AutoMutex _l(mLock); |
| Device* device = getDeviceLocked(deviceId); |
| if (device && device->virtualKeyMap) { |
| outVirtualKeys.appendVector(device->virtualKeyMap->getVirtualKeys()); |
| } |
| } |
| |
| EventHub::Device* EventHub::getDeviceLocked(int32_t deviceId) const { |
| if (deviceId == 0) { |
| deviceId = mBuiltInKeyboardId; |
| } |
| |
| size_t numDevices = mDevices.size(); |
| for (size_t i = FIRST_ACTUAL_DEVICE_INDEX; i < numDevices; i++) { |
| Device* device = mDevices[i]; |
| if (device->id == deviceId) { |
| return device; |
| } |
| } |
| return NULL; |
| } |
| |
| bool EventHub::getEvent(RawEvent* outEvent) { |
| outEvent->deviceId = 0; |
| outEvent->type = 0; |
| outEvent->scanCode = 0; |
| outEvent->keyCode = 0; |
| outEvent->flags = 0; |
| outEvent->value = 0; |
| outEvent->when = 0; |
| |
| // Note that we only allow one caller to getEvent(), so don't need |
| // to do locking here... only when adding/removing devices. |
| |
| if (!mOpened) { |
| mError = openPlatformInput() ? NO_ERROR : UNKNOWN_ERROR; |
| mOpened = true; |
| mNeedToSendFinishedDeviceScan = true; |
| } |
| |
| for (;;) { |
| // Report any devices that had last been added/removed. |
| if (mClosingDevices != NULL) { |
| Device* device = mClosingDevices; |
| LOGV("Reporting device closed: id=%d, name=%s\n", |
| device->id, device->path.string()); |
| mClosingDevices = device->next; |
| if (device->id == mBuiltInKeyboardId) { |
| outEvent->deviceId = 0; |
| } else { |
| outEvent->deviceId = device->id; |
| } |
| outEvent->type = DEVICE_REMOVED; |
| outEvent->when = systemTime(SYSTEM_TIME_MONOTONIC); |
| delete device; |
| mNeedToSendFinishedDeviceScan = true; |
| return true; |
| } |
| |
| if (mOpeningDevices != NULL) { |
| Device* device = mOpeningDevices; |
| LOGV("Reporting device opened: id=%d, name=%s\n", |
| device->id, device->path.string()); |
| mOpeningDevices = device->next; |
| if (device->id == mBuiltInKeyboardId) { |
| outEvent->deviceId = 0; |
| } else { |
| outEvent->deviceId = device->id; |
| } |
| outEvent->type = DEVICE_ADDED; |
| outEvent->when = systemTime(SYSTEM_TIME_MONOTONIC); |
| mNeedToSendFinishedDeviceScan = true; |
| return true; |
| } |
| |
| if (mNeedToSendFinishedDeviceScan) { |
| mNeedToSendFinishedDeviceScan = false; |
| outEvent->type = FINISHED_DEVICE_SCAN; |
| outEvent->when = systemTime(SYSTEM_TIME_MONOTONIC); |
| return true; |
| } |
| |
| // Grab the next input event. |
| for (;;) { |
| // Consume buffered input events, if any. |
| if (mInputBufferIndex < mInputBufferCount) { |
| const struct input_event& iev = mInputBufferData[mInputBufferIndex++]; |
| const Device* device = mDevices[mInputFdIndex]; |
| |
| LOGV("%s got: t0=%d, t1=%d, type=%d, code=%d, v=%d", device->path.string(), |
| (int) iev.time.tv_sec, (int) iev.time.tv_usec, iev.type, iev.code, iev.value); |
| if (device->id == mBuiltInKeyboardId) { |
| outEvent->deviceId = 0; |
| } else { |
| outEvent->deviceId = device->id; |
| } |
| outEvent->type = iev.type; |
| outEvent->scanCode = iev.code; |
| outEvent->flags = 0; |
| if (iev.type == EV_KEY) { |
| outEvent->keyCode = AKEYCODE_UNKNOWN; |
| if (device->keyMap.haveKeyLayout()) { |
| status_t err = device->keyMap.keyLayoutMap->map(iev.code, |
| &outEvent->keyCode, &outEvent->flags); |
| LOGV("iev.code=%d keyCode=%d flags=0x%08x err=%d\n", |
| iev.code, outEvent->keyCode, outEvent->flags, err); |
| } |
| } else { |
| outEvent->keyCode = iev.code; |
| } |
| outEvent->value = iev.value; |
| |
| // Use an event timestamp in the same timebase as |
| // java.lang.System.nanoTime() and android.os.SystemClock.uptimeMillis() |
| // as expected by the rest of the system. |
| outEvent->when = systemTime(SYSTEM_TIME_MONOTONIC); |
| return true; |
| } |
| |
| // Finish reading all events from devices identified in previous poll(). |
| // This code assumes that mInputDeviceIndex is initially 0 and that the |
| // revents member of pollfd is initialized to 0 when the device is first added. |
| // Since mFds[0] is used for inotify, we process regular events starting at index 1. |
| mInputFdIndex += 1; |
| if (mInputFdIndex >= mFds.size()) { |
| break; |
| } |
| |
| const struct pollfd& pfd = mFds[mInputFdIndex]; |
| if (pfd.revents & POLLIN) { |
| int32_t readSize = read(pfd.fd, mInputBufferData, |
| sizeof(struct input_event) * INPUT_BUFFER_SIZE); |
| if (readSize < 0) { |
| if (errno != EAGAIN && errno != EINTR) { |
| LOGW("could not get event (errno=%d)", errno); |
| } |
| } else if ((readSize % sizeof(struct input_event)) != 0) { |
| LOGE("could not get event (wrong size: %d)", readSize); |
| } else { |
| mInputBufferCount = size_t(readSize) / sizeof(struct input_event); |
| mInputBufferIndex = 0; |
| } |
| } |
| } |
| |
| #if HAVE_INOTIFY |
| // readNotify() will modify mFDs and mFDCount, so this must be done after |
| // processing all other events. |
| if(mFds[0].revents & POLLIN) { |
| readNotify(mFds[0].fd); |
| mFds.editItemAt(0).revents = 0; |
| continue; // report added or removed devices immediately |
| } |
| #endif |
| |
| mInputFdIndex = 0; |
| |
| // Poll for events. Mind the wake lock dance! |
| // We hold a wake lock at all times except during poll(). This works due to some |
| // subtle choreography. When a device driver has pending (unread) events, it acquires |
| // a kernel wake lock. However, once the last pending event has been read, the device |
| // driver will release the kernel wake lock. To prevent the system from going to sleep |
| // when this happens, the EventHub holds onto its own user wake lock while the client |
| // is processing events. Thus the system can only sleep if there are no events |
| // pending or currently being processed. |
| release_wake_lock(WAKE_LOCK_ID); |
| |
| int pollResult = poll(mFds.editArray(), mFds.size(), -1); |
| |
| acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_ID); |
| |
| if (pollResult <= 0) { |
| if (errno != EINTR) { |
| LOGW("poll failed (errno=%d)\n", errno); |
| usleep(100000); |
| } |
| } |
| } |
| } |
| |
| /* |
| * Open the platform-specific input device. |
| */ |
| bool EventHub::openPlatformInput(void) { |
| /* |
| * Open platform-specific input device(s). |
| */ |
| int res, fd; |
| |
| #ifdef HAVE_INOTIFY |
| fd = inotify_init(); |
| res = inotify_add_watch(fd, DEVICE_PATH, IN_DELETE | IN_CREATE); |
| if(res < 0) { |
| LOGE("could not add watch for %s, %s\n", DEVICE_PATH, strerror(errno)); |
| } |
| #else |
| /* |
| * The code in EventHub::getEvent assumes that mFDs[0] is an inotify fd. |
| * We allocate space for it and set it to something invalid. |
| */ |
| fd = -1; |
| #endif |
| |
| // Reserve fd index 0 for inotify. |
| struct pollfd pollfd; |
| pollfd.fd = fd; |
| pollfd.events = POLLIN; |
| pollfd.revents = 0; |
| mFds.push(pollfd); |
| mDevices.push(NULL); |
| |
| res = scanDir(DEVICE_PATH); |
| if(res < 0) { |
| LOGE("scan dir failed for %s\n", DEVICE_PATH); |
| } |
| |
| return true; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static bool containsNonZeroByte(const uint8_t* array, uint32_t startIndex, uint32_t endIndex) { |
| const uint8_t* end = array + endIndex; |
| array += startIndex; |
| while (array != end) { |
| if (*(array++) != 0) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| static const int32_t GAMEPAD_KEYCODES[] = { |
| AKEYCODE_BUTTON_A, AKEYCODE_BUTTON_B, AKEYCODE_BUTTON_C, |
| AKEYCODE_BUTTON_X, AKEYCODE_BUTTON_Y, AKEYCODE_BUTTON_Z, |
| AKEYCODE_BUTTON_L1, AKEYCODE_BUTTON_R1, |
| AKEYCODE_BUTTON_L2, AKEYCODE_BUTTON_R2, |
| AKEYCODE_BUTTON_THUMBL, AKEYCODE_BUTTON_THUMBR, |
| AKEYCODE_BUTTON_START, AKEYCODE_BUTTON_SELECT, AKEYCODE_BUTTON_MODE |
| }; |
| |
| int EventHub::openDevice(const char *devicePath) { |
| char buffer[80]; |
| |
| LOGV("Opening device: %s", devicePath); |
| |
| AutoMutex _l(mLock); |
| |
| int fd = open(devicePath, O_RDWR); |
| if(fd < 0) { |
| LOGE("could not open %s, %s\n", devicePath, strerror(errno)); |
| return -1; |
| } |
| |
| InputDeviceIdentifier identifier; |
| |
| // Get device name. |
| if(ioctl(fd, EVIOCGNAME(sizeof(buffer) - 1), &buffer) < 1) { |
| //fprintf(stderr, "could not get device name for %s, %s\n", devicePath, strerror(errno)); |
| } else { |
| buffer[sizeof(buffer) - 1] = '\0'; |
| identifier.name.setTo(buffer); |
| } |
| |
| // Check to see if the device is on our excluded list |
| List<String8>::iterator iter = mExcludedDevices.begin(); |
| List<String8>::iterator end = mExcludedDevices.end(); |
| for ( ; iter != end; iter++) { |
| const char* test = *iter; |
| if (identifier.name == test) { |
| LOGI("ignoring event id %s driver %s\n", devicePath, test); |
| close(fd); |
| return -1; |
| } |
| } |
| |
| // Get device driver version. |
| int driverVersion; |
| if(ioctl(fd, EVIOCGVERSION, &driverVersion)) { |
| LOGE("could not get driver version for %s, %s\n", devicePath, strerror(errno)); |
| close(fd); |
| return -1; |
| } |
| |
| // Get device identifier. |
| struct input_id inputId; |
| if(ioctl(fd, EVIOCGID, &inputId)) { |
| LOGE("could not get device input id for %s, %s\n", devicePath, strerror(errno)); |
| close(fd); |
| return -1; |
| } |
| identifier.bus = inputId.bustype; |
| identifier.product = inputId.product; |
| identifier.vendor = inputId.vendor; |
| identifier.version = inputId.version; |
| |
| // Get device physical location. |
| if(ioctl(fd, EVIOCGPHYS(sizeof(buffer) - 1), &buffer) < 1) { |
| //fprintf(stderr, "could not get location for %s, %s\n", devicePath, strerror(errno)); |
| } else { |
| buffer[sizeof(buffer) - 1] = '\0'; |
| identifier.location.setTo(buffer); |
| } |
| |
| // Get device unique id. |
| if(ioctl(fd, EVIOCGUNIQ(sizeof(buffer) - 1), &buffer) < 1) { |
| //fprintf(stderr, "could not get idstring for %s, %s\n", devicePath, strerror(errno)); |
| } else { |
| buffer[sizeof(buffer) - 1] = '\0'; |
| identifier.uniqueId.setTo(buffer); |
| } |
| |
| // Make file descriptor non-blocking for use with poll(). |
| if (fcntl(fd, F_SETFL, O_NONBLOCK)) { |
| LOGE("Error %d making device file descriptor non-blocking.", errno); |
| close(fd); |
| return -1; |
| } |
| |
| // Allocate device. (The device object takes ownership of the fd at this point.) |
| int32_t deviceId = mNextDeviceId++; |
| Device* device = new Device(fd, deviceId, String8(devicePath), identifier); |
| |
| #if 0 |
| LOGI("add device %d: %s\n", deviceId, devicePath); |
| LOGI(" bus: %04x\n" |
| " vendor %04x\n" |
| " product %04x\n" |
| " version %04x\n", |
| identifier.bus, identifier.vendor, identifier.product, identifier.version); |
| LOGI(" name: \"%s\"\n", identifier.name.string()); |
| LOGI(" location: \"%s\"\n", identifier.location.string()); |
| LOGI(" unique id: \"%s\"\n", identifier.uniqueId.string()); |
| LOGI(" driver: v%d.%d.%d\n", |
| driverVersion >> 16, (driverVersion >> 8) & 0xff, driverVersion & 0xff); |
| #endif |
| |
| // Load the configuration file for the device. |
| loadConfiguration(device); |
| |
| // Figure out the kinds of events the device reports. |
| |
| uint8_t key_bitmask[sizeof_bit_array(KEY_MAX + 1)]; |
| memset(key_bitmask, 0, sizeof(key_bitmask)); |
| |
| LOGV("Getting keys..."); |
| if (ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(key_bitmask)), key_bitmask) >= 0) { |
| //LOGI("MAP\n"); |
| //for (int i = 0; i < sizeof(key_bitmask); i++) { |
| // LOGI("%d: 0x%02x\n", i, key_bitmask[i]); |
| //} |
| |
| // See if this is a keyboard. Ignore everything in the button range except for |
| // gamepads which are also considered keyboards. |
| if (containsNonZeroByte(key_bitmask, 0, sizeof_bit_array(BTN_MISC)) |
| || containsNonZeroByte(key_bitmask, sizeof_bit_array(BTN_GAMEPAD), |
| sizeof_bit_array(BTN_DIGI)) |
| || containsNonZeroByte(key_bitmask, sizeof_bit_array(KEY_OK), |
| sizeof_bit_array(KEY_MAX + 1))) { |
| device->classes |= INPUT_DEVICE_CLASS_KEYBOARD; |
| |
| device->keyBitmask = new uint8_t[sizeof(key_bitmask)]; |
| if (device->keyBitmask != NULL) { |
| memcpy(device->keyBitmask, key_bitmask, sizeof(key_bitmask)); |
| } else { |
| delete device; |
| LOGE("out of memory allocating key bitmask"); |
| return -1; |
| } |
| } |
| } |
| |
| // See if this is a cursor device such as a trackball or mouse. |
| if (test_bit(BTN_MOUSE, key_bitmask)) { |
| uint8_t rel_bitmask[sizeof_bit_array(REL_MAX + 1)]; |
| memset(rel_bitmask, 0, sizeof(rel_bitmask)); |
| LOGV("Getting relative controllers..."); |
| if (ioctl(fd, EVIOCGBIT(EV_REL, sizeof(rel_bitmask)), rel_bitmask) >= 0) { |
| if (test_bit(REL_X, rel_bitmask) && test_bit(REL_Y, rel_bitmask)) { |
| device->classes |= INPUT_DEVICE_CLASS_CURSOR; |
| } |
| } |
| } |
| |
| // See if this is a touch pad. |
| uint8_t abs_bitmask[sizeof_bit_array(ABS_MAX + 1)]; |
| memset(abs_bitmask, 0, sizeof(abs_bitmask)); |
| LOGV("Getting absolute controllers..."); |
| if (ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(abs_bitmask)), abs_bitmask) >= 0) { |
| // Is this a new modern multi-touch driver? |
| if (test_bit(ABS_MT_POSITION_X, abs_bitmask) |
| && test_bit(ABS_MT_POSITION_Y, abs_bitmask)) { |
| device->classes |= INPUT_DEVICE_CLASS_TOUCHSCREEN | INPUT_DEVICE_CLASS_TOUCHSCREEN_MT; |
| |
| // Is this an old style single-touch driver? |
| } else if (test_bit(BTN_TOUCH, key_bitmask) |
| && test_bit(ABS_X, abs_bitmask) && test_bit(ABS_Y, abs_bitmask)) { |
| device->classes |= INPUT_DEVICE_CLASS_TOUCHSCREEN; |
| } |
| } |
| |
| #ifdef EV_SW |
| // figure out the switches this device reports |
| uint8_t sw_bitmask[sizeof_bit_array(SW_MAX + 1)]; |
| memset(sw_bitmask, 0, sizeof(sw_bitmask)); |
| bool hasSwitches = false; |
| if (ioctl(fd, EVIOCGBIT(EV_SW, sizeof(sw_bitmask)), sw_bitmask) >= 0) { |
| for (int i=0; i<EV_SW; i++) { |
| //LOGI("Device %d sw %d: has=%d", device->id, i, test_bit(i, sw_bitmask)); |
| if (test_bit(i, sw_bitmask)) { |
| hasSwitches = true; |
| if (mSwitches[i] == 0) { |
| mSwitches[i] = device->id; |
| } |
| } |
| } |
| } |
| if (hasSwitches) { |
| device->classes |= INPUT_DEVICE_CLASS_SWITCH; |
| } |
| #endif |
| |
| if ((device->classes & INPUT_DEVICE_CLASS_TOUCHSCREEN)) { |
| // Load the virtual keys for the touch screen, if any. |
| // We do this now so that we can make sure to load the keymap if necessary. |
| status_t status = loadVirtualKeyMap(device); |
| if (!status) { |
| device->classes |= INPUT_DEVICE_CLASS_KEYBOARD; |
| } |
| } |
| |
| if ((device->classes & INPUT_DEVICE_CLASS_KEYBOARD) != 0) { |
| // Load the keymap for the device. |
| status_t status = loadKeyMap(device); |
| |
| // Set system properties for the keyboard. |
| setKeyboardProperties(device, false); |
| |
| // Register the keyboard as a built-in keyboard if it is eligible. |
| if (!status |
| && mBuiltInKeyboardId == -1 |
| && isEligibleBuiltInKeyboard(device->identifier, |
| device->configuration, &device->keyMap)) { |
| mBuiltInKeyboardId = device->id; |
| setKeyboardProperties(device, true); |
| } |
| |
| // 'Q' key support = cheap test of whether this is an alpha-capable kbd |
| if (hasKeycodeLocked(device, AKEYCODE_Q)) { |
| device->classes |= INPUT_DEVICE_CLASS_ALPHAKEY; |
| } |
| |
| // See if this device has a DPAD. |
| if (hasKeycodeLocked(device, AKEYCODE_DPAD_UP) && |
| hasKeycodeLocked(device, AKEYCODE_DPAD_DOWN) && |
| hasKeycodeLocked(device, AKEYCODE_DPAD_LEFT) && |
| hasKeycodeLocked(device, AKEYCODE_DPAD_RIGHT) && |
| hasKeycodeLocked(device, AKEYCODE_DPAD_CENTER)) { |
| device->classes |= INPUT_DEVICE_CLASS_DPAD; |
| } |
| |
| // See if this device has a gamepad. |
| for (size_t i = 0; i < sizeof(GAMEPAD_KEYCODES)/sizeof(GAMEPAD_KEYCODES[0]); i++) { |
| if (hasKeycodeLocked(device, GAMEPAD_KEYCODES[i])) { |
| device->classes |= INPUT_DEVICE_CLASS_GAMEPAD; |
| break; |
| } |
| } |
| } |
| |
| // If the device isn't recognized as something we handle, don't monitor it. |
| if (device->classes == 0) { |
| LOGV("Dropping device: id=%d, path='%s', name='%s'", |
| deviceId, devicePath, device->identifier.name.string()); |
| delete device; |
| return -1; |
| } |
| |
| LOGI("New device: id=%d, fd=%d, path='%s', name='%s', classes=0x%x, " |
| "configuration='%s', keyLayout='%s', keyCharacterMap='%s', builtinKeyboard=%s", |
| deviceId, fd, devicePath, device->identifier.name.string(), |
| device->classes, |
| device->configurationFile.string(), |
| device->keyMap.keyLayoutFile.string(), |
| device->keyMap.keyCharacterMapFile.string(), |
| toString(mBuiltInKeyboardId == deviceId)); |
| |
| struct pollfd pollfd; |
| pollfd.fd = fd; |
| pollfd.events = POLLIN; |
| pollfd.revents = 0; |
| mFds.push(pollfd); |
| mDevices.push(device); |
| |
| device->next = mOpeningDevices; |
| mOpeningDevices = device; |
| return 0; |
| } |
| |
| void EventHub::loadConfiguration(Device* device) { |
| device->configurationFile = getInputDeviceConfigurationFilePathByDeviceIdentifier( |
| device->identifier, INPUT_DEVICE_CONFIGURATION_FILE_TYPE_CONFIGURATION); |
| if (device->configurationFile.isEmpty()) { |
| LOGD("No input device configuration file found for device '%s'.", |
| device->identifier.name.string()); |
| } else { |
| status_t status = PropertyMap::load(device->configurationFile, |
| &device->configuration); |
| if (status) { |
| LOGE("Error loading input device configuration file for device '%s'. " |
| "Using default configuration.", |
| device->identifier.name.string()); |
| } |
| } |
| } |
| |
| status_t EventHub::loadVirtualKeyMap(Device* device) { |
| // The virtual key map is supplied by the kernel as a system board property file. |
| String8 path; |
| path.append("/sys/board_properties/virtualkeys."); |
| path.append(device->identifier.name); |
| if (access(path.string(), R_OK)) { |
| return NAME_NOT_FOUND; |
| } |
| return VirtualKeyMap::load(path, &device->virtualKeyMap); |
| } |
| |
| status_t EventHub::loadKeyMap(Device* device) { |
| return device->keyMap.load(device->identifier, device->configuration); |
| } |
| |
| void EventHub::setKeyboardProperties(Device* device, bool builtInKeyboard) { |
| int32_t id = builtInKeyboard ? 0 : device->id; |
| android::setKeyboardProperties(id, device->identifier, |
| device->keyMap.keyLayoutFile, device->keyMap.keyCharacterMapFile); |
| } |
| |
| void EventHub::clearKeyboardProperties(Device* device, bool builtInKeyboard) { |
| int32_t id = builtInKeyboard ? 0 : device->id; |
| android::clearKeyboardProperties(id); |
| } |
| |
| bool EventHub::hasKeycodeLocked(Device* device, int keycode) const { |
| if (!device->keyMap.haveKeyLayout() || !device->keyBitmask) { |
| return false; |
| } |
| |
| Vector<int32_t> scanCodes; |
| device->keyMap.keyLayoutMap->findScanCodes(keycode, &scanCodes); |
| const size_t N = scanCodes.size(); |
| for (size_t i=0; i<N && i<=KEY_MAX; i++) { |
| int32_t sc = scanCodes.itemAt(i); |
| if (sc >= 0 && sc <= KEY_MAX && test_bit(sc, device->keyBitmask)) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| int EventHub::closeDevice(const char *devicePath) { |
| AutoMutex _l(mLock); |
| |
| for (size_t i = FIRST_ACTUAL_DEVICE_INDEX; i < mDevices.size(); i++) { |
| Device* device = mDevices[i]; |
| if (device->path == devicePath) { |
| LOGI("Removed device: path=%s name=%s id=%d fd=%d classes=0x%x\n", |
| device->path.string(), device->identifier.name.string(), device->id, |
| device->fd, device->classes); |
| |
| #ifdef EV_SW |
| for (int j=0; j<EV_SW; j++) { |
| if (mSwitches[j] == device->id) { |
| mSwitches[j] = 0; |
| } |
| } |
| #endif |
| |
| if (device->id == mBuiltInKeyboardId) { |
| LOGW("built-in keyboard device %s (id=%d) is closing! the apps will not like this", |
| device->path.string(), mBuiltInKeyboardId); |
| mBuiltInKeyboardId = -1; |
| clearKeyboardProperties(device, true); |
| } |
| clearKeyboardProperties(device, false); |
| |
| mFds.removeAt(i); |
| mDevices.removeAt(i); |
| device->close(); |
| |
| device->next = mClosingDevices; |
| mClosingDevices = device; |
| return 0; |
| } |
| } |
| LOGE("remove device: %s not found\n", devicePath); |
| return -1; |
| } |
| |
| int EventHub::readNotify(int nfd) { |
| #ifdef HAVE_INOTIFY |
| int res; |
| char devname[PATH_MAX]; |
| char *filename; |
| char event_buf[512]; |
| int event_size; |
| int event_pos = 0; |
| struct inotify_event *event; |
| |
| LOGV("EventHub::readNotify nfd: %d\n", nfd); |
| res = read(nfd, event_buf, sizeof(event_buf)); |
| if(res < (int)sizeof(*event)) { |
| if(errno == EINTR) |
| return 0; |
| LOGW("could not get event, %s\n", strerror(errno)); |
| return 1; |
| } |
| //printf("got %d bytes of event information\n", res); |
| |
| strcpy(devname, DEVICE_PATH); |
| filename = devname + strlen(devname); |
| *filename++ = '/'; |
| |
| while(res >= (int)sizeof(*event)) { |
| event = (struct inotify_event *)(event_buf + event_pos); |
| //printf("%d: %08x \"%s\"\n", event->wd, event->mask, event->len ? event->name : ""); |
| if(event->len) { |
| strcpy(filename, event->name); |
| if(event->mask & IN_CREATE) { |
| openDevice(devname); |
| } |
| else { |
| closeDevice(devname); |
| } |
| } |
| event_size = sizeof(*event) + event->len; |
| res -= event_size; |
| event_pos += event_size; |
| } |
| #endif |
| return 0; |
| } |
| |
| int EventHub::scanDir(const char *dirname) |
| { |
| char devname[PATH_MAX]; |
| char *filename; |
| DIR *dir; |
| struct dirent *de; |
| dir = opendir(dirname); |
| if(dir == NULL) |
| return -1; |
| strcpy(devname, dirname); |
| filename = devname + strlen(devname); |
| *filename++ = '/'; |
| while((de = readdir(dir))) { |
| if(de->d_name[0] == '.' && |
| (de->d_name[1] == '\0' || |
| (de->d_name[1] == '.' && de->d_name[2] == '\0'))) |
| continue; |
| strcpy(filename, de->d_name); |
| openDevice(devname); |
| } |
| closedir(dir); |
| return 0; |
| } |
| |
| void EventHub::dump(String8& dump) { |
| dump.append("Event Hub State:\n"); |
| |
| { // acquire lock |
| AutoMutex _l(mLock); |
| |
| dump.appendFormat(INDENT "BuiltInKeyboardId: %d\n", mBuiltInKeyboardId); |
| |
| dump.append(INDENT "Devices:\n"); |
| |
| for (size_t i = FIRST_ACTUAL_DEVICE_INDEX; i < mDevices.size(); i++) { |
| const Device* device = mDevices[i]; |
| if (device) { |
| if (mBuiltInKeyboardId == device->id) { |
| dump.appendFormat(INDENT2 "%d: %s (aka device 0 - built-in keyboard)\n", |
| device->id, device->identifier.name.string()); |
| } else { |
| dump.appendFormat(INDENT2 "%d: %s\n", device->id, |
| device->identifier.name.string()); |
| } |
| dump.appendFormat(INDENT3 "Classes: 0x%08x\n", device->classes); |
| dump.appendFormat(INDENT3 "Path: %s\n", device->path.string()); |
| dump.appendFormat(INDENT3 "Location: %s\n", device->identifier.location.string()); |
| dump.appendFormat(INDENT3 "UniqueId: %s\n", device->identifier.uniqueId.string()); |
| dump.appendFormat(INDENT3 "Identifier: bus=0x%04x, vendor=0x%04x, " |
| "product=0x%04x, version=0x%04x\n", |
| device->identifier.bus, device->identifier.vendor, |
| device->identifier.product, device->identifier.version); |
| dump.appendFormat(INDENT3 "KeyLayoutFile: %s\n", |
| device->keyMap.keyLayoutFile.string()); |
| dump.appendFormat(INDENT3 "KeyCharacterMapFile: %s\n", |
| device->keyMap.keyCharacterMapFile.string()); |
| dump.appendFormat(INDENT3 "ConfigurationFile: %s\n", |
| device->configurationFile.string()); |
| } |
| } |
| } // release lock |
| } |
| |
| }; // namespace android |