e839a589bf
The old dispatch mechanism has been left in place and continues to be used by default for now. To enable native input dispatch, edit the ENABLE_NATIVE_DISPATCH constant in WindowManagerPolicy. Includes part of the new input event NDK API. Some details TBD. To wire up input dispatch, as the ViewRoot adds a window to the window session it receives an InputChannel object as an output argument. The InputChannel encapsulates the file descriptors for a shared memory region and two pipe end-points. The ViewRoot then provides the InputChannel to the InputQueue. Behind the scenes, InputQueue simply attaches handlers to the native PollLoop object that underlies the MessageQueue. This way MessageQueue doesn't need to know anything about input dispatch per-se, it just exposes (in native code) a PollLoop that other components can use to monitor file descriptor state changes. There can be zero or more targets for any given input event. Each input target is specified by its input channel and some parameters including flags, an X/Y coordinate offset, and the dispatch timeout. An input target can request either synchronous dispatch (for foreground apps) or asynchronous dispatch (fire-and-forget for wallpapers and "outside" targets). Currently, finding the appropriate input targets for an event requires a call back into the WindowManagerServer from native code. In the future this will be refactored to avoid most of these callbacks except as required to handle pending focus transitions. End-to-end event dispatch mostly works! To do: event injection, rate limiting, ANRs, testing, optimization, etc. Change-Id: I8c36b2b9e0a2d27392040ecda0f51b636456de25
924 lines
29 KiB
C++
924 lines
29 KiB
C++
//
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// Copyright 2005 The Android Open Source Project
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//
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// Handle events, like key input and vsync.
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//
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// The goal is to provide an optimized solution for Linux, not an
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// implementation that works well across all platforms. We expect
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// events to arrive on file descriptors, so that we can use a select()
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// select() call to sleep.
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//
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// We can't select() on anything but network sockets in Windows, so we
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// provide an alternative implementation of waitEvent for that platform.
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//
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#define LOG_TAG "EventHub"
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//#define LOG_NDEBUG 0
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#include <ui/EventHub.h>
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#include <ui/KeycodeLabels.h>
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#include <hardware_legacy/power.h>
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#include <cutils/properties.h>
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#include <utils/Log.h>
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#include <utils/Timers.h>
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#include <utils/threads.h>
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#include <utils/Errors.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <memory.h>
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#include <errno.h>
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#include <assert.h>
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#include "KeyLayoutMap.h"
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#include <string.h>
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#include <stdint.h>
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#include <dirent.h>
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#ifdef HAVE_INOTIFY
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# include <sys/inotify.h>
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#endif
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#ifdef HAVE_ANDROID_OS
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# include <sys/limits.h> /* not part of Linux */
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#endif
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#include <sys/poll.h>
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#include <sys/ioctl.h>
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/* this macro is used to tell if "bit" is set in "array"
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* it selects a byte from the array, and does a boolean AND
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* operation with a byte that only has the relevant bit set.
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* eg. to check for the 12th bit, we do (array[1] & 1<<4)
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*/
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#define test_bit(bit, array) (array[bit/8] & (1<<(bit%8)))
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#define ID_MASK 0x0000ffff
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#define SEQ_MASK 0x7fff0000
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#define SEQ_SHIFT 16
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#define id_to_index(id) ((id&ID_MASK)+1)
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#ifndef ABS_MT_TOUCH_MAJOR
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#define ABS_MT_TOUCH_MAJOR 0x30 /* Major axis of touching ellipse */
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#endif
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#ifndef ABS_MT_POSITION_X
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#define ABS_MT_POSITION_X 0x35 /* Center X ellipse position */
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#endif
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#ifndef ABS_MT_POSITION_Y
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#define ABS_MT_POSITION_Y 0x36 /* Center Y ellipse position */
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#endif
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namespace android {
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static const char *WAKE_LOCK_ID = "KeyEvents";
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static const char *device_path = "/dev/input";
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/* return the larger integer */
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static inline int max(int v1, int v2)
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{
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return (v1 > v2) ? v1 : v2;
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}
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EventHub::device_t::device_t(int32_t _id, const char* _path, const char* name)
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: id(_id), path(_path), name(name), classes(0)
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, keyBitmask(NULL), layoutMap(new KeyLayoutMap()), next(NULL) {
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}
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EventHub::device_t::~device_t() {
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delete [] keyBitmask;
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delete layoutMap;
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}
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EventHub::EventHub(void)
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: mError(NO_INIT), mHaveFirstKeyboard(false), mFirstKeyboardId(0)
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, mDevicesById(0), mNumDevicesById(0)
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, mOpeningDevices(0), mClosingDevices(0)
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, mDevices(0), mFDs(0), mFDCount(0), mOpened(false)
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{
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acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_ID);
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#ifdef EV_SW
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memset(mSwitches, 0, sizeof(mSwitches));
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#endif
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}
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/*
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* Clean up.
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*/
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EventHub::~EventHub(void)
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{
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release_wake_lock(WAKE_LOCK_ID);
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// we should free stuff here...
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}
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status_t EventHub::errorCheck() const
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{
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return mError;
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}
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String8 EventHub::getDeviceName(int32_t deviceId) const
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{
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AutoMutex _l(mLock);
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device_t* device = getDevice(deviceId);
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if (device == NULL) return String8();
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return device->name;
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}
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uint32_t EventHub::getDeviceClasses(int32_t deviceId) const
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{
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AutoMutex _l(mLock);
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device_t* device = getDevice(deviceId);
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if (device == NULL) return 0;
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return device->classes;
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}
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int EventHub::getAbsoluteInfo(int32_t deviceId, int axis, int *outMinValue,
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int* outMaxValue, int* outFlat, int* outFuzz) const
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{
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AutoMutex _l(mLock);
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device_t* device = getDevice(deviceId);
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if (device == NULL) return -1;
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struct input_absinfo info;
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if(ioctl(mFDs[id_to_index(device->id)].fd, EVIOCGABS(axis), &info)) {
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LOGE("Error reading absolute controller %d for device %s fd %d\n",
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axis, device->name.string(), mFDs[id_to_index(device->id)].fd);
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return -1;
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}
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*outMinValue = info.minimum;
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*outMaxValue = info.maximum;
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*outFlat = info.flat;
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*outFuzz = info.fuzz;
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return 0;
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}
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int32_t EventHub::getScanCodeState(int32_t deviceId, int32_t deviceClasses,
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int32_t scanCode) const {
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if (scanCode >= 0 && scanCode <= KEY_MAX) {
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AutoMutex _l(mLock);
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if (deviceId == -1) {
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for (int i = 0; i < mNumDevicesById; i++) {
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device_t* device = mDevicesById[i].device;
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if (device != NULL && (device->classes & deviceClasses) != 0) {
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int32_t result = getScanCodeStateLocked(device, scanCode);
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if (result >= KEY_STATE_DOWN) {
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return result;
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}
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}
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}
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return KEY_STATE_UP;
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} else {
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device_t* device = getDevice(deviceId);
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if (device != NULL) {
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return getScanCodeStateLocked(device, scanCode);
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}
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}
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}
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return KEY_STATE_UNKNOWN;
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}
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int32_t EventHub::getScanCodeStateLocked(device_t* device, int32_t scanCode) const {
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uint8_t key_bitmask[(KEY_MAX + 7) / 8];
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memset(key_bitmask, 0, sizeof(key_bitmask));
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if (ioctl(mFDs[id_to_index(device->id)].fd,
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EVIOCGKEY(sizeof(key_bitmask)), key_bitmask) >= 0) {
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return test_bit(scanCode, key_bitmask) ? KEY_STATE_DOWN : KEY_STATE_UP;
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}
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return KEY_STATE_UNKNOWN;
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}
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int32_t EventHub::getKeyCodeState(int32_t deviceId, int32_t deviceClasses,
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int32_t keyCode) const {
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if (deviceId == -1) {
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for (int i = 0; i < mNumDevicesById; i++) {
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device_t* device = mDevicesById[i].device;
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if (device != NULL && (device->classes & deviceClasses) != 0) {
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int32_t result = getKeyCodeStateLocked(device, keyCode);
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if (result >= KEY_STATE_DOWN) {
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return result;
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}
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}
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}
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return KEY_STATE_UP;
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} else {
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device_t* device = getDevice(deviceId);
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if (device != NULL) {
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return getKeyCodeStateLocked(device, keyCode);
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}
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}
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return KEY_STATE_UNKNOWN;
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}
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int32_t EventHub::getKeyCodeStateLocked(device_t* device, int32_t keyCode) const {
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Vector<int32_t> scanCodes;
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device->layoutMap->findScancodes(keyCode, &scanCodes);
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uint8_t key_bitmask[(KEY_MAX + 7) / 8];
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memset(key_bitmask, 0, sizeof(key_bitmask));
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if (ioctl(mFDs[id_to_index(device->id)].fd,
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EVIOCGKEY(sizeof(key_bitmask)), key_bitmask) >= 0) {
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#if 0
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for (size_t i=0; i<=KEY_MAX; i++) {
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LOGI("(Scan code %d: down=%d)", i, test_bit(i, key_bitmask));
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}
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#endif
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const size_t N = scanCodes.size();
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for (size_t i=0; i<N && i<=KEY_MAX; i++) {
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int32_t sc = scanCodes.itemAt(i);
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//LOGI("Code %d: down=%d", sc, test_bit(sc, key_bitmask));
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if (sc >= 0 && sc <= KEY_MAX && test_bit(sc, key_bitmask)) {
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return KEY_STATE_DOWN;
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}
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}
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return KEY_STATE_UP;
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}
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return KEY_STATE_UNKNOWN;
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}
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int32_t EventHub::getSwitchState(int32_t deviceId, int32_t deviceClasses, int32_t sw) const {
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#ifdef EV_SW
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if (sw >= 0 && sw <= SW_MAX) {
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AutoMutex _l(mLock);
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if (deviceId == -1) {
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deviceId = mSwitches[sw];
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if (deviceId == 0) {
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return KEY_STATE_UNKNOWN;
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}
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}
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device_t* device = getDevice(deviceId);
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if (device == NULL) {
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return KEY_STATE_UNKNOWN;
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}
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return getSwitchStateLocked(device, sw);
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}
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#endif
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return KEY_STATE_UNKNOWN;
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}
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int32_t EventHub::getSwitchStateLocked(device_t* device, int32_t sw) const {
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uint8_t sw_bitmask[(SW_MAX + 7) / 8];
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memset(sw_bitmask, 0, sizeof(sw_bitmask));
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if (ioctl(mFDs[id_to_index(device->id)].fd,
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EVIOCGSW(sizeof(sw_bitmask)), sw_bitmask) >= 0) {
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return test_bit(sw, sw_bitmask) ? KEY_STATE_DOWN : KEY_STATE_UP;
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}
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return KEY_STATE_UNKNOWN;
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}
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status_t EventHub::scancodeToKeycode(int32_t deviceId, int scancode,
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int32_t* outKeycode, uint32_t* outFlags) const
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{
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AutoMutex _l(mLock);
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device_t* device = getDevice(deviceId);
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if (device != NULL && device->layoutMap != NULL) {
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status_t err = device->layoutMap->map(scancode, outKeycode, outFlags);
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if (err == NO_ERROR) {
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return NO_ERROR;
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}
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}
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if (mHaveFirstKeyboard) {
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device = getDevice(mFirstKeyboardId);
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if (device != NULL && device->layoutMap != NULL) {
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status_t err = device->layoutMap->map(scancode, outKeycode, outFlags);
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if (err == NO_ERROR) {
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return NO_ERROR;
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}
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}
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}
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*outKeycode = 0;
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*outFlags = 0;
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return NAME_NOT_FOUND;
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}
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void EventHub::addExcludedDevice(const char* deviceName)
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{
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String8 name(deviceName);
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mExcludedDevices.push_back(name);
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}
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EventHub::device_t* EventHub::getDevice(int32_t deviceId) const
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{
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if (deviceId == 0) deviceId = mFirstKeyboardId;
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int32_t id = deviceId & ID_MASK;
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if (id >= mNumDevicesById || id < 0) return NULL;
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device_t* dev = mDevicesById[id].device;
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if (dev == NULL) return NULL;
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if (dev->id == deviceId) {
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return dev;
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}
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return NULL;
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}
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bool EventHub::getEvent(int32_t* outDeviceId, int32_t* outType,
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int32_t* outScancode, int32_t* outKeycode, uint32_t *outFlags,
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int32_t* outValue, nsecs_t* outWhen)
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{
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*outDeviceId = 0;
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*outType = 0;
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*outScancode = 0;
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*outKeycode = 0;
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*outFlags = 0;
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*outValue = 0;
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*outWhen = 0;
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status_t err;
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int i;
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int res;
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int pollres;
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struct input_event iev;
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// Note that we only allow one caller to getEvent(), so don't need
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// to do locking here... only when adding/removing devices.
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if (!mOpened) {
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mError = openPlatformInput() ? NO_ERROR : UNKNOWN_ERROR;
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mOpened = true;
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}
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while(1) {
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// First, report any devices that had last been added/removed.
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if (mClosingDevices != NULL) {
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device_t* device = mClosingDevices;
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LOGV("Reporting device closed: id=0x%x, name=%s\n",
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device->id, device->path.string());
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mClosingDevices = device->next;
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*outDeviceId = device->id;
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if (*outDeviceId == mFirstKeyboardId) *outDeviceId = 0;
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*outType = DEVICE_REMOVED;
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delete device;
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return true;
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}
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if (mOpeningDevices != NULL) {
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device_t* device = mOpeningDevices;
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LOGV("Reporting device opened: id=0x%x, name=%s\n",
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device->id, device->path.string());
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mOpeningDevices = device->next;
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*outDeviceId = device->id;
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if (*outDeviceId == mFirstKeyboardId) *outDeviceId = 0;
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*outType = DEVICE_ADDED;
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return true;
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}
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release_wake_lock(WAKE_LOCK_ID);
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pollres = poll(mFDs, mFDCount, -1);
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acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_ID);
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if (pollres <= 0) {
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if (errno != EINTR) {
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LOGW("select failed (errno=%d)\n", errno);
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usleep(100000);
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}
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continue;
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}
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//printf("poll %d, returned %d\n", mFDCount, pollres);
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// mFDs[0] is used for inotify, so process regular events starting at mFDs[1]
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for(i = 1; i < mFDCount; i++) {
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if(mFDs[i].revents) {
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LOGV("revents for %d = 0x%08x", i, mFDs[i].revents);
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if(mFDs[i].revents & POLLIN) {
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res = read(mFDs[i].fd, &iev, sizeof(iev));
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if (res == sizeof(iev)) {
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LOGV("%s got: t0=%d, t1=%d, type=%d, code=%d, v=%d",
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mDevices[i]->path.string(),
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(int) iev.time.tv_sec, (int) iev.time.tv_usec,
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iev.type, iev.code, iev.value);
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*outDeviceId = mDevices[i]->id;
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if (*outDeviceId == mFirstKeyboardId) *outDeviceId = 0;
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*outType = iev.type;
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*outScancode = iev.code;
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if (iev.type == EV_KEY) {
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err = mDevices[i]->layoutMap->map(iev.code, outKeycode, outFlags);
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LOGV("iev.code=%d outKeycode=%d outFlags=0x%08x err=%d\n",
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iev.code, *outKeycode, *outFlags, err);
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if (err != 0) {
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*outKeycode = 0;
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*outFlags = 0;
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}
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} else {
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*outKeycode = iev.code;
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}
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*outValue = iev.value;
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*outWhen = s2ns(iev.time.tv_sec) + us2ns(iev.time.tv_usec);
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return true;
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} else {
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if (res<0) {
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LOGW("could not get event (errno=%d)", errno);
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} else {
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LOGE("could not get event (wrong size: %d)", res);
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}
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continue;
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}
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}
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}
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}
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// read_notify() will modify mFDs and mFDCount, so this must be done after
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// processing all other events.
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if(mFDs[0].revents & POLLIN) {
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read_notify(mFDs[0].fd);
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}
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}
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}
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/*
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* Open the platform-specific input device.
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*/
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bool EventHub::openPlatformInput(void)
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{
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/*
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* Open platform-specific input device(s).
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*/
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int res;
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mFDCount = 1;
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mFDs = (pollfd *)calloc(1, sizeof(mFDs[0]));
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mDevices = (device_t **)calloc(1, sizeof(mDevices[0]));
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mFDs[0].events = POLLIN;
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mDevices[0] = NULL;
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#ifdef HAVE_INOTIFY
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mFDs[0].fd = inotify_init();
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res = inotify_add_watch(mFDs[0].fd, device_path, IN_DELETE | IN_CREATE);
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if(res < 0) {
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LOGE("could not add watch for %s, %s\n", device_path, strerror(errno));
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}
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#else
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/*
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* The code in EventHub::getEvent assumes that mFDs[0] is an inotify fd.
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* We allocate space for it and set it to something invalid.
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*/
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mFDs[0].fd = -1;
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#endif
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res = scan_dir(device_path);
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if(res < 0) {
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LOGE("scan dir failed for %s\n", device_path);
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//open_device("/dev/input/event0");
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}
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return true;
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}
|
|
|
|
/*
|
|
* Inspect the known devices to determine whether physical keys exist for the given
|
|
* framework-domain key codes.
|
|
*/
|
|
bool EventHub::hasKeys(size_t numCodes, const int32_t* keyCodes, uint8_t* outFlags) const {
|
|
for (size_t codeIndex = 0; codeIndex < numCodes; codeIndex++) {
|
|
outFlags[codeIndex] = 0;
|
|
|
|
// check each available hardware device for support for this keycode
|
|
Vector<int32_t> scanCodes;
|
|
for (int n = 0; (n < mFDCount) && (outFlags[codeIndex] == 0); n++) {
|
|
if (mDevices[n]) {
|
|
status_t err = mDevices[n]->layoutMap->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], mDevices[n]->keyBitmask)) {
|
|
outFlags[codeIndex] = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
int EventHub::open_device(const char *deviceName)
|
|
{
|
|
int version;
|
|
int fd;
|
|
struct pollfd *new_mFDs;
|
|
device_t **new_devices;
|
|
char **new_device_names;
|
|
char name[80];
|
|
char location[80];
|
|
char idstr[80];
|
|
struct input_id id;
|
|
|
|
LOGV("Opening device: %s", deviceName);
|
|
|
|
AutoMutex _l(mLock);
|
|
|
|
fd = open(deviceName, O_RDWR);
|
|
if(fd < 0) {
|
|
LOGE("could not open %s, %s\n", deviceName, strerror(errno));
|
|
return -1;
|
|
}
|
|
|
|
if(ioctl(fd, EVIOCGVERSION, &version)) {
|
|
LOGE("could not get driver version for %s, %s\n", deviceName, strerror(errno));
|
|
return -1;
|
|
}
|
|
if(ioctl(fd, EVIOCGID, &id)) {
|
|
LOGE("could not get driver id for %s, %s\n", deviceName, strerror(errno));
|
|
return -1;
|
|
}
|
|
name[sizeof(name) - 1] = '\0';
|
|
location[sizeof(location) - 1] = '\0';
|
|
idstr[sizeof(idstr) - 1] = '\0';
|
|
if(ioctl(fd, EVIOCGNAME(sizeof(name) - 1), &name) < 1) {
|
|
//fprintf(stderr, "could not get device name for %s, %s\n", deviceName, strerror(errno));
|
|
name[0] = '\0';
|
|
}
|
|
|
|
// 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 (strcmp(name, test) == 0) {
|
|
LOGI("ignoring event id %s driver %s\n", deviceName, test);
|
|
close(fd);
|
|
fd = -1;
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if(ioctl(fd, EVIOCGPHYS(sizeof(location) - 1), &location) < 1) {
|
|
//fprintf(stderr, "could not get location for %s, %s\n", deviceName, strerror(errno));
|
|
location[0] = '\0';
|
|
}
|
|
if(ioctl(fd, EVIOCGUNIQ(sizeof(idstr) - 1), &idstr) < 1) {
|
|
//fprintf(stderr, "could not get idstring for %s, %s\n", deviceName, strerror(errno));
|
|
idstr[0] = '\0';
|
|
}
|
|
|
|
int devid = 0;
|
|
while (devid < mNumDevicesById) {
|
|
if (mDevicesById[devid].device == NULL) {
|
|
break;
|
|
}
|
|
devid++;
|
|
}
|
|
if (devid >= mNumDevicesById) {
|
|
device_ent* new_devids = (device_ent*)realloc(mDevicesById,
|
|
sizeof(mDevicesById[0]) * (devid + 1));
|
|
if (new_devids == NULL) {
|
|
LOGE("out of memory");
|
|
return -1;
|
|
}
|
|
mDevicesById = new_devids;
|
|
mNumDevicesById = devid+1;
|
|
mDevicesById[devid].device = NULL;
|
|
mDevicesById[devid].seq = 0;
|
|
}
|
|
|
|
mDevicesById[devid].seq = (mDevicesById[devid].seq+(1<<SEQ_SHIFT))&SEQ_MASK;
|
|
if (mDevicesById[devid].seq == 0) {
|
|
mDevicesById[devid].seq = 1<<SEQ_SHIFT;
|
|
}
|
|
|
|
new_mFDs = (pollfd*)realloc(mFDs, sizeof(mFDs[0]) * (mFDCount + 1));
|
|
new_devices = (device_t**)realloc(mDevices, sizeof(mDevices[0]) * (mFDCount + 1));
|
|
if (new_mFDs == NULL || new_devices == NULL) {
|
|
LOGE("out of memory");
|
|
return -1;
|
|
}
|
|
mFDs = new_mFDs;
|
|
mDevices = new_devices;
|
|
|
|
#if 0
|
|
LOGI("add device %d: %s\n", mFDCount, deviceName);
|
|
LOGI(" bus: %04x\n"
|
|
" vendor %04x\n"
|
|
" product %04x\n"
|
|
" version %04x\n",
|
|
id.bustype, id.vendor, id.product, id.version);
|
|
LOGI(" name: \"%s\"\n", name);
|
|
LOGI(" location: \"%s\"\n"
|
|
" id: \"%s\"\n", location, idstr);
|
|
LOGI(" version: %d.%d.%d\n",
|
|
version >> 16, (version >> 8) & 0xff, version & 0xff);
|
|
#endif
|
|
|
|
device_t* device = new device_t(devid|mDevicesById[devid].seq, deviceName, name);
|
|
if (device == NULL) {
|
|
LOGE("out of memory");
|
|
return -1;
|
|
}
|
|
|
|
mFDs[mFDCount].fd = fd;
|
|
mFDs[mFDCount].events = POLLIN;
|
|
|
|
// figure out the kinds of events the device reports
|
|
|
|
// See if this is a keyboard, and classify it. Note that we only
|
|
// consider up through the function keys; we don't want to include
|
|
// ones after that (play cd etc) so we don't mistakenly consider a
|
|
// controller to be a keyboard.
|
|
uint8_t key_bitmask[(KEY_MAX+7)/8];
|
|
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<((KEY_MAX+7)/8); i++) {
|
|
// LOGI("%d: 0x%02x\n", i, key_bitmask[i]);
|
|
//}
|
|
for (int i=0; i<((BTN_MISC+7)/8); i++) {
|
|
if (key_bitmask[i] != 0) {
|
|
device->classes |= INPUT_DEVICE_CLASS_KEYBOARD;
|
|
break;
|
|
}
|
|
}
|
|
if ((device->classes & INPUT_DEVICE_CLASS_KEYBOARD) != 0) {
|
|
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 trackball.
|
|
if (test_bit(BTN_MOUSE, key_bitmask)) {
|
|
uint8_t rel_bitmask[(REL_MAX+7)/8];
|
|
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_TRACKBALL;
|
|
}
|
|
}
|
|
}
|
|
|
|
uint8_t abs_bitmask[(ABS_MAX+7)/8];
|
|
memset(abs_bitmask, 0, sizeof(abs_bitmask));
|
|
LOGV("Getting absolute controllers...");
|
|
ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(abs_bitmask)), abs_bitmask);
|
|
|
|
// Is this a new modern multi-touch driver?
|
|
if (test_bit(ABS_MT_TOUCH_MAJOR, abs_bitmask)
|
|
&& 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[(SW_MAX+7)/8];
|
|
memset(sw_bitmask, 0, sizeof(sw_bitmask));
|
|
if (ioctl(fd, EVIOCGBIT(EV_SW, sizeof(sw_bitmask)), sw_bitmask) >= 0) {
|
|
for (int i=0; i<EV_SW; i++) {
|
|
//LOGI("Device 0x%x sw %d: has=%d", device->id, i, test_bit(i, sw_bitmask));
|
|
if (test_bit(i, sw_bitmask)) {
|
|
if (mSwitches[i] == 0) {
|
|
mSwitches[i] = device->id;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if ((device->classes & INPUT_DEVICE_CLASS_KEYBOARD) != 0) {
|
|
char tmpfn[sizeof(name)];
|
|
char keylayoutFilename[300];
|
|
|
|
// a more descriptive name
|
|
device->name = name;
|
|
|
|
// replace all the spaces with underscores
|
|
strcpy(tmpfn, name);
|
|
for (char *p = strchr(tmpfn, ' '); p && *p; p = strchr(tmpfn, ' '))
|
|
*p = '_';
|
|
|
|
// find the .kl file we need for this device
|
|
const char* root = getenv("ANDROID_ROOT");
|
|
snprintf(keylayoutFilename, sizeof(keylayoutFilename),
|
|
"%s/usr/keylayout/%s.kl", root, tmpfn);
|
|
bool defaultKeymap = false;
|
|
if (access(keylayoutFilename, R_OK)) {
|
|
snprintf(keylayoutFilename, sizeof(keylayoutFilename),
|
|
"%s/usr/keylayout/%s", root, "qwerty.kl");
|
|
defaultKeymap = true;
|
|
}
|
|
device->layoutMap->load(keylayoutFilename);
|
|
|
|
// tell the world about the devname (the descriptive name)
|
|
if (!mHaveFirstKeyboard && !defaultKeymap && strstr(name, "-keypad")) {
|
|
// the built-in keyboard has a well-known device ID of 0,
|
|
// this device better not go away.
|
|
mHaveFirstKeyboard = true;
|
|
mFirstKeyboardId = device->id;
|
|
property_set("hw.keyboards.0.devname", name);
|
|
} else {
|
|
// ensure mFirstKeyboardId is set to -something-.
|
|
if (mFirstKeyboardId == 0) {
|
|
mFirstKeyboardId = device->id;
|
|
}
|
|
}
|
|
char propName[100];
|
|
sprintf(propName, "hw.keyboards.%u.devname", device->id);
|
|
property_set(propName, name);
|
|
|
|
// 'Q' key support = cheap test of whether this is an alpha-capable kbd
|
|
if (hasKeycode(device, kKeyCodeQ)) {
|
|
device->classes |= INPUT_DEVICE_CLASS_ALPHAKEY;
|
|
}
|
|
|
|
// See if this has a DPAD.
|
|
if (hasKeycode(device, kKeyCodeDpadUp) &&
|
|
hasKeycode(device, kKeyCodeDpadDown) &&
|
|
hasKeycode(device, kKeyCodeDpadLeft) &&
|
|
hasKeycode(device, kKeyCodeDpadRight) &&
|
|
hasKeycode(device, kKeyCodeDpadCenter)) {
|
|
device->classes |= INPUT_DEVICE_CLASS_DPAD;
|
|
}
|
|
|
|
LOGI("New keyboard: device->id=0x%x devname='%s' propName='%s' keylayout='%s'\n",
|
|
device->id, name, propName, keylayoutFilename);
|
|
}
|
|
|
|
LOGI("New device: path=%s name=%s id=0x%x (of 0x%x) index=%d fd=%d classes=0x%x\n",
|
|
deviceName, name, device->id, mNumDevicesById, mFDCount, fd, device->classes);
|
|
|
|
LOGV("Adding device %s %p at %d, id = %d, classes = 0x%x\n",
|
|
deviceName, device, mFDCount, devid, device->classes);
|
|
|
|
mDevicesById[devid].device = device;
|
|
device->next = mOpeningDevices;
|
|
mOpeningDevices = device;
|
|
mDevices[mFDCount] = device;
|
|
|
|
mFDCount++;
|
|
return 0;
|
|
}
|
|
|
|
bool EventHub::hasKeycode(device_t* device, int keycode) const
|
|
{
|
|
if (device->keyBitmask == NULL || device->layoutMap == NULL) {
|
|
return false;
|
|
}
|
|
|
|
Vector<int32_t> scanCodes;
|
|
device->layoutMap->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::close_device(const char *deviceName)
|
|
{
|
|
AutoMutex _l(mLock);
|
|
|
|
int i;
|
|
for(i = 1; i < mFDCount; i++) {
|
|
if(strcmp(mDevices[i]->path.string(), deviceName) == 0) {
|
|
//LOGD("remove device %d: %s\n", i, deviceName);
|
|
device_t* device = mDevices[i];
|
|
|
|
LOGI("Removed device: path=%s name=%s id=0x%x (of 0x%x) index=%d fd=%d classes=0x%x\n",
|
|
device->path.string(), device->name.string(), device->id,
|
|
mNumDevicesById, mFDCount, mFDs[i].fd, device->classes);
|
|
|
|
// Clear this device's entry.
|
|
int index = (device->id&ID_MASK);
|
|
mDevicesById[index].device = NULL;
|
|
|
|
// Close the file descriptor and compact the fd array.
|
|
close(mFDs[i].fd);
|
|
int count = mFDCount - i - 1;
|
|
memmove(mDevices + i, mDevices + i + 1, sizeof(mDevices[0]) * count);
|
|
memmove(mFDs + i, mFDs + i + 1, sizeof(mFDs[0]) * count);
|
|
mFDCount--;
|
|
|
|
#ifdef EV_SW
|
|
for (int j=0; j<EV_SW; j++) {
|
|
if (mSwitches[j] == device->id) {
|
|
mSwitches[j] = 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
device->next = mClosingDevices;
|
|
mClosingDevices = device;
|
|
|
|
if (device->id == mFirstKeyboardId) {
|
|
LOGW("built-in keyboard device %s (id=%d) is closing! the apps will not like this",
|
|
device->path.string(), mFirstKeyboardId);
|
|
mFirstKeyboardId = 0;
|
|
property_set("hw.keyboards.0.devname", NULL);
|
|
}
|
|
// clear the property
|
|
char propName[100];
|
|
sprintf(propName, "hw.keyboards.%u.devname", device->id);
|
|
property_set(propName, NULL);
|
|
return 0;
|
|
}
|
|
}
|
|
LOGE("remove device: %s not found\n", deviceName);
|
|
return -1;
|
|
}
|
|
|
|
int EventHub::read_notify(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::read_notify 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) {
|
|
open_device(devname);
|
|
}
|
|
else {
|
|
close_device(devname);
|
|
}
|
|
}
|
|
event_size = sizeof(*event) + event->len;
|
|
res -= event_size;
|
|
event_pos += event_size;
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
|
|
int EventHub::scan_dir(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);
|
|
open_device(devname);
|
|
}
|
|
closedir(dir);
|
|
return 0;
|
|
}
|
|
|
|
}; // namespace android
|