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author Jeff Brown <jeffbrown@google.com> 2012-04-10 14:30:49 -0700
committer Jeff Brown <jeffbrown@google.com> 2012-04-10 18:23:58 -0700
commit9f25b7fdf216c9ef0bd2322cd223eeaf0d60f77f (patch)
treeb0b509a261874435cab3f5f1a727c02b399bd91c /services/input/EventHub.cpp
parent54ae14749bc7f9e73cfda35a8b49f9efa80a77fb (diff)
Request key maps from input manager service.
Instead of each application loading the KeyCharacterMap from the file system, get them from the input manager service as part of the InputDevice object. Refactored InputManager to be a proper singleton instead of having a bunch of static methods. InputManager now maintains a cache of all InputDevice objects that it has loaded. Currently we never invalidate the cache which can cause InputDevice to return stale motion ranges if the device is reconfigured. This will be fixed in a future change. Added a fake InputDevice with ID -1 to represent the virtual keyboard. Change-Id: If7a695839ad0972317a5aab89e9d1e42ace28eb7
Diffstat (limited to 'services/input/EventHub.cpp')
-rw-r--r--services/input/EventHub.cpp114
1 files changed, 71 insertions, 43 deletions
diff --git a/services/input/EventHub.cpp b/services/input/EventHub.cpp
index 7060ae2da931..744f2ad4533f 100644
--- a/services/input/EventHub.cpp
+++ b/services/input/EventHub.cpp
@@ -93,6 +93,32 @@ static String8 sha1(const String8& in) {
return out;
}
+static void setDescriptor(InputDeviceIdentifier& identifier) {
+ // Compute a device descriptor that uniquely identifies the device.
+ // The descriptor is assumed to be a stable identifier. Its value should not
+ // change between reboots, reconnections, firmware updates or new releases of Android.
+ // Ideally, we also want the descriptor to be short and relatively opaque.
+ String8 rawDescriptor;
+ rawDescriptor.appendFormat(":%04x:%04x:", identifier.vendor, identifier.product);
+ if (!identifier.uniqueId.isEmpty()) {
+ rawDescriptor.append("uniqueId:");
+ rawDescriptor.append(identifier.uniqueId);
+ } if (identifier.vendor == 0 && identifier.product == 0) {
+ // If we don't know the vendor and product id, then the device is probably
+ // built-in so we need to rely on other information to uniquely identify
+ // the input device. Usually we try to avoid relying on the device name or
+ // location but for built-in input device, they are unlikely to ever change.
+ if (!identifier.name.isEmpty()) {
+ rawDescriptor.append("name:");
+ rawDescriptor.append(identifier.name);
+ } else if (!identifier.location.isEmpty()) {
+ rawDescriptor.append("location:");
+ rawDescriptor.append(identifier.location);
+ }
+ }
+ identifier.descriptor = sha1(rawDescriptor);
+}
+
// --- Global Functions ---
uint32_t getAbsAxisUsage(int32_t axis, uint32_t deviceClasses) {
@@ -164,7 +190,7 @@ const int EventHub::EPOLL_SIZE_HINT;
const int EventHub::EPOLL_MAX_EVENTS;
EventHub::EventHub(void) :
- mBuiltInKeyboardId(-1), mNextDeviceId(1),
+ mBuiltInKeyboardId(NO_BUILT_IN_KEYBOARD), mNextDeviceId(1),
mOpeningDevices(0), mClosingDevices(0),
mNeedToSendFinishedDeviceScan(false),
mNeedToReopenDevices(false), mNeedToScanDevices(true),
@@ -256,7 +282,7 @@ status_t EventHub::getAbsoluteAxisInfo(int32_t deviceId, int axis,
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && test_bit(axis, device->absBitmask)) {
+ if (device && !device->isVirtual() && test_bit(axis, device->absBitmask)) {
struct input_absinfo info;
if(ioctl(device->fd, EVIOCGABS(axis), &info)) {
ALOGW("Error reading absolute controller %d for device %s fd %d, errno=%d",
@@ -307,7 +333,7 @@ int32_t EventHub::getScanCodeState(int32_t deviceId, int32_t scanCode) const {
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && test_bit(scanCode, device->keyBitmask)) {
+ if (device && !device->isVirtual() && test_bit(scanCode, device->keyBitmask)) {
uint8_t keyState[sizeof_bit_array(KEY_MAX + 1)];
memset(keyState, 0, sizeof(keyState));
if (ioctl(device->fd, EVIOCGKEY(sizeof(keyState)), keyState) >= 0) {
@@ -322,7 +348,7 @@ int32_t EventHub::getKeyCodeState(int32_t deviceId, int32_t keyCode) const {
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && device->keyMap.haveKeyLayout()) {
+ if (device && !device->isVirtual() && device->keyMap.haveKeyLayout()) {
Vector<int32_t> scanCodes;
device->keyMap.keyLayoutMap->findScanCodesForKey(keyCode, &scanCodes);
if (scanCodes.size() != 0) {
@@ -347,7 +373,7 @@ int32_t EventHub::getSwitchState(int32_t deviceId, int32_t sw) const {
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && test_bit(sw, device->swBitmask)) {
+ if (device && !device->isVirtual() && test_bit(sw, device->swBitmask)) {
uint8_t swState[sizeof_bit_array(SW_MAX + 1)];
memset(swState, 0, sizeof(swState));
if (ioctl(device->fd, EVIOCGSW(sizeof(swState)), swState) >= 0) {
@@ -365,7 +391,7 @@ status_t EventHub::getAbsoluteAxisValue(int32_t deviceId, int32_t axis, int32_t*
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && test_bit(axis, device->absBitmask)) {
+ if (device && !device->isVirtual() && test_bit(axis, device->absBitmask)) {
struct input_absinfo info;
if(ioctl(device->fd, EVIOCGABS(axis), &info)) {
ALOGW("Error reading absolute controller %d for device %s fd %d, errno=%d",
@@ -421,7 +447,7 @@ status_t EventHub::mapKey(int32_t deviceId, int scancode,
}
}
- if (mBuiltInKeyboardId != -1) {
+ if (mBuiltInKeyboardId != NO_BUILT_IN_KEYBOARD) {
device = getDeviceLocked(mBuiltInKeyboardId);
if (device && device->keyMap.haveKeyLayout()) {
@@ -449,7 +475,7 @@ status_t EventHub::mapAxis(int32_t deviceId, int scancode, AxisInfo* outAxisInfo
}
}
- if (mBuiltInKeyboardId != -1) {
+ if (mBuiltInKeyboardId != NO_BUILT_IN_KEYBOARD) {
device = getDeviceLocked(mBuiltInKeyboardId);
if (device && device->keyMap.haveKeyLayout()) {
@@ -494,7 +520,7 @@ bool EventHub::hasLed(int32_t deviceId, int32_t led) const {
void EventHub::setLedState(int32_t deviceId, int32_t led, bool on) {
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
- if (device && led >= 0 && led <= LED_MAX) {
+ if (device && !device->isVirtual() && led >= 0 && led <= LED_MAX) {
struct input_event ev;
ev.time.tv_sec = 0;
ev.time.tv_usec = 0;
@@ -520,17 +546,17 @@ void EventHub::getVirtualKeyDefinitions(int32_t deviceId,
}
}
-String8 EventHub::getKeyCharacterMapFile(int32_t deviceId) const {
+sp<KeyCharacterMap> EventHub::getKeyCharacterMap(int32_t deviceId) const {
AutoMutex _l(mLock);
Device* device = getDeviceLocked(deviceId);
if (device) {
- return device->keyMap.keyCharacterMapFile;
+ return device->keyMap.keyCharacterMap;
}
- return String8();
+ return NULL;
}
EventHub::Device* EventHub::getDeviceLocked(int32_t deviceId) const {
- if (deviceId == 0) {
+ if (deviceId == BUILT_IN_KEYBOARD_ID) {
deviceId = mBuiltInKeyboardId;
}
ssize_t index = mDevices.indexOfKey(deviceId);
@@ -578,7 +604,7 @@ size_t EventHub::getEvents(int timeoutMillis, RawEvent* buffer, size_t bufferSiz
device->id, device->path.string());
mClosingDevices = device->next;
event->when = now;
- event->deviceId = device->id == mBuiltInKeyboardId ? 0 : device->id;
+ event->deviceId = device->id == mBuiltInKeyboardId ? BUILT_IN_KEYBOARD_ID : device->id;
event->type = DEVICE_REMOVED;
event += 1;
delete device;
@@ -813,6 +839,9 @@ void EventHub::scanDevicesLocked() {
if(res < 0) {
ALOGE("scan dir failed for %s\n", DEVICE_PATH);
}
+ if (mDevices.indexOfKey(VIRTUAL_KEYBOARD_ID) < 0) {
+ createVirtualKeyboardLocked();
+ }
}
// ----------------------------------------------------------------------------
@@ -908,29 +937,8 @@ status_t EventHub::openDeviceLocked(const char *devicePath) {
identifier.uniqueId.setTo(buffer);
}
- // Compute a device descriptor that uniquely identifies the device.
- // The descriptor is assumed to be a stable identifier. Its value should not
- // change between reboots, reconnections, firmware updates or new releases of Android.
- // Ideally, we also want the descriptor to be short and relatively opaque.
- String8 rawDescriptor;
- rawDescriptor.appendFormat(":%04x:%04x:", identifier.vendor, identifier.product);
- if (!identifier.uniqueId.isEmpty()) {
- rawDescriptor.append("uniqueId:");
- rawDescriptor.append(identifier.uniqueId);
- } if (identifier.vendor == 0 && identifier.product == 0) {
- // If we don't know the vendor and product id, then the device is probably
- // built-in so we need to rely on other information to uniquely identify
- // the input device. Usually we try to avoid relying on the device name or
- // location but for built-in input device, they are unlikely to ever change.
- if (!identifier.name.isEmpty()) {
- rawDescriptor.append("name:");
- rawDescriptor.append(identifier.name);
- } else if (!identifier.location.isEmpty()) {
- rawDescriptor.append("location:");
- rawDescriptor.append(identifier.location);
- }
- }
- identifier.descriptor = sha1(rawDescriptor);
+ // Fill in the descriptor.
+ setDescriptor(identifier);
// Make file descriptor non-blocking for use with poll().
if (fcntl(fd, F_SETFL, O_NONBLOCK)) {
@@ -1048,7 +1056,7 @@ status_t EventHub::openDeviceLocked(const char *devicePath) {
if (device->classes & INPUT_DEVICE_CLASS_KEYBOARD) {
// Register the keyboard as a built-in keyboard if it is eligible.
if (!keyMapStatus
- && mBuiltInKeyboardId == -1
+ && mBuiltInKeyboardId == NO_BUILT_IN_KEYBOARD
&& isEligibleBuiltInKeyboard(device->identifier,
device->configuration, &device->keyMap)) {
mBuiltInKeyboardId = device->id;
@@ -1133,11 +1141,29 @@ status_t EventHub::openDeviceLocked(const char *devicePath) {
toString(mBuiltInKeyboardId == deviceId),
toString(usingSuspendBlockIoctl), toString(usingClockIoctl));
- mDevices.add(deviceId, device);
+ addDeviceLocked(device);
+ return 0;
+}
+void EventHub::createVirtualKeyboardLocked() {
+ InputDeviceIdentifier identifier;
+ identifier.name = "Virtual";
+ identifier.uniqueId = "<virtual>";
+ setDescriptor(identifier);
+
+ Device* device = new Device(-1, VIRTUAL_KEYBOARD_ID, String8("<virtual>"), identifier);
+ device->classes = INPUT_DEVICE_CLASS_KEYBOARD
+ | INPUT_DEVICE_CLASS_ALPHAKEY
+ | INPUT_DEVICE_CLASS_DPAD
+ | INPUT_DEVICE_CLASS_VIRTUAL;
+ loadKeyMapLocked(device);
+ addDeviceLocked(device);
+}
+
+void EventHub::addDeviceLocked(Device* device) {
+ mDevices.add(device->id, device);
device->next = mOpeningDevices;
mOpeningDevices = device;
- return 0;
}
void EventHub::loadConfigurationLocked(Device* device) {
@@ -1224,11 +1250,13 @@ void EventHub::closeDeviceLocked(Device* device) {
if (device->id == mBuiltInKeyboardId) {
ALOGW("built-in keyboard device %s (id=%d) is closing! the apps will not like this",
device->path.string(), mBuiltInKeyboardId);
- mBuiltInKeyboardId = -1;
+ mBuiltInKeyboardId = NO_BUILT_IN_KEYBOARD;
}
- if (epoll_ctl(mEpollFd, EPOLL_CTL_DEL, device->fd, NULL)) {
- ALOGW("Could not remove device fd from epoll instance. errno=%d", errno);
+ if (!device->isVirtual()) {
+ if (epoll_ctl(mEpollFd, EPOLL_CTL_DEL, device->fd, NULL)) {
+ ALOGW("Could not remove device fd from epoll instance. errno=%d", errno);
+ }
}
mDevices.removeItem(device->id);