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/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _UI_INPUTREADER_INPUT_MAPPER_H
#define _UI_INPUTREADER_INPUT_MAPPER_H
#include "EventHub.h"
#include "InputDevice.h"
#include "InputListener.h"
#include "InputReaderContext.h"
#include "StylusState.h"
#include "VibrationElement.h"
namespace android {
/* An input mapper transforms raw input events into cooked event data.
* A single input device can have multiple associated input mappers in order to interpret
* different classes of events.
*
* InputMapper lifecycle:
* - create
* - configure with 0 changes
* - reset
* - process, process, process (may occasionally reconfigure with non-zero changes or reset)
* - reset
* - destroy
*/
class InputMapper {
public:
explicit InputMapper(InputDeviceContext& deviceContext);
virtual ~InputMapper();
inline int32_t getDeviceId() { return mDeviceContext.getId(); }
inline InputDeviceContext& getDeviceContext() { return mDeviceContext; }
inline const std::string getDeviceName() { return mDeviceContext.getName(); }
inline InputReaderContext* getContext() { return mDeviceContext.getContext(); }
inline InputReaderPolicyInterface* getPolicy() { return getContext()->getPolicy(); }
inline InputListenerInterface* getListener() { return getContext()->getListener(); }
virtual uint32_t getSources() = 0;
virtual void populateDeviceInfo(InputDeviceInfo* deviceInfo);
virtual void dump(std::string& dump);
virtual void configure(nsecs_t when, const InputReaderConfiguration* config, uint32_t changes);
virtual void reset(nsecs_t when);
virtual void process(const RawEvent* rawEvent) = 0;
virtual void timeoutExpired(nsecs_t when);
virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode);
virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode);
virtual int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode);
virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes,
const int32_t* keyCodes, uint8_t* outFlags);
virtual void vibrate(const VibrationSequence& sequence, ssize_t repeat, int32_t token);
virtual void cancelVibrate(int32_t token);
virtual bool isVibrating();
virtual std::vector<int32_t> getVibratorIds();
virtual void cancelTouch(nsecs_t when, nsecs_t readTime);
virtual bool enableSensor(InputDeviceSensorType sensorType,
std::chrono::microseconds samplingPeriod,
std::chrono::microseconds maxBatchReportLatency);
virtual void disableSensor(InputDeviceSensorType sensorType);
virtual void flushSensor(InputDeviceSensorType sensorType);
virtual std::optional<int32_t> getBatteryCapacity() { return std::nullopt; }
virtual std::optional<int32_t> getBatteryStatus() { return std::nullopt; }
virtual bool setLightColor(int32_t lightId, int32_t color) { return true; }
virtual bool setLightPlayerId(int32_t lightId, int32_t playerId) { return true; }
virtual std::optional<int32_t> getLightColor(int32_t lightId) { return std::nullopt; }
virtual std::optional<int32_t> getLightPlayerId(int32_t lightId) { return std::nullopt; }
virtual int32_t getMetaState();
virtual void updateMetaState(int32_t keyCode);
virtual void updateExternalStylusState(const StylusState& state);
virtual std::optional<int32_t> getAssociatedDisplayId() { return std::nullopt; }
virtual void updateLedState(bool reset) {}
protected:
InputDeviceContext& mDeviceContext;
status_t getAbsoluteAxisInfo(int32_t axis, RawAbsoluteAxisInfo* axisInfo);
void bumpGeneration();
static void dumpRawAbsoluteAxisInfo(std::string& dump, const RawAbsoluteAxisInfo& axis,
const char* name);
static void dumpStylusState(std::string& dump, const StylusState& state);
};
} // namespace android
#endif // _UI_INPUTREADER_INPUT_MAPPER_H
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