146 lines
4.0 KiB
C
146 lines
4.0 KiB
C
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/*
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* Copyright (C) 2005 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//
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#ifndef _RUNTIME_EVENT_HUB_H
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#define _RUNTIME_EVENT_HUB_H
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#include <utils/String8.h>
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#include <utils/threads.h>
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#include <utils.h>
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#include <linux/input.h>
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struct pollfd;
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namespace android {
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class KeyLayoutMap;
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/*
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* Grand Central Station for events. With a single call to waitEvent()
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* you can wait for:
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* - input events from the keypad of a real device
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* - input events and meta-events (e.g. "quit") from the simulator
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* - synthetic events from the runtime (e.g. "URL fetch completed")
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* - real or forged "vsync" events
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*
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* Do not instantiate this class. Instead, call startUp().
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*/
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class EventHub : public RefBase
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{
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public:
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EventHub();
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status_t errorCheck() const;
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// bit fields for classes of devices.
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enum {
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CLASS_KEYBOARD = 0x00000001,
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CLASS_ALPHAKEY = 0x00000002,
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CLASS_TOUCHSCREEN = 0x00000004,
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CLASS_TRACKBALL = 0x00000008
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};
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uint32_t getDeviceClasses(int32_t deviceId) const;
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String8 getDeviceName(int32_t deviceId) const;
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int getAbsoluteInfo(int32_t deviceId, int axis, int *outMinValue,
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int* outMaxValue, int* outFlat, int* outFuzz) const;
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int getSwitchState(int sw) const;
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int getSwitchState(int32_t deviceId, int sw) const;
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int getScancodeState(int key) const;
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int getScancodeState(int32_t deviceId, int key) const;
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int getKeycodeState(int key) const;
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int getKeycodeState(int32_t deviceId, int key) const;
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// special type codes when devices are added/removed.
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enum {
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DEVICE_ADDED = 0x10000000,
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DEVICE_REMOVED = 0x20000000
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};
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// examine key input devices for specific framework keycode support
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bool hasKeys(size_t numCodes, int32_t* keyCodes, uint8_t* outFlags);
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virtual bool 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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protected:
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virtual ~EventHub();
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virtual void onFirstRef();
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private:
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bool openPlatformInput(void);
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int32_t convertDeviceKey_TI_P2(int code);
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int open_device(const char *device);
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int close_device(const char *device);
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int scan_dir(const char *dirname);
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int read_notify(int nfd);
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status_t mError;
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struct device_t {
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const int32_t id;
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const String8 path;
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String8 name;
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uint32_t classes;
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uint8_t* keyBitmask;
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KeyLayoutMap* layoutMap;
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String8 keylayoutFilename;
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device_t* next;
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device_t(int32_t _id, const char* _path);
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~device_t();
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};
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device_t* getDevice(int32_t deviceId) const;
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// Protect all internal state.
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mutable Mutex mLock;
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bool mHaveFirstKeyboard;
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int32_t mFirstKeyboardId; // the API is that the build in keyboard is id 0, so map it
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struct device_ent {
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device_t* device;
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uint32_t seq;
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};
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device_ent *mDevicesById;
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int mNumDevicesById;
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device_t *mOpeningDevices;
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device_t *mClosingDevices;
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device_t **mDevices;
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struct pollfd *mFDs;
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int mFDCount;
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// device ids that report particular switches.
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#ifdef EV_SW
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int32_t mSwitches[SW_MAX+1];
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#endif
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};
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}; // namespace android
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#endif // _RUNTIME_EVENT_HUB_H
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