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/*
* Copyright 2024 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.
*/
#pragma once
#include <gui/PidUid.h>
#include <input/Input.h>
#include <ui/Transform.h>
#include <array>
#include <variant>
#include <vector>
namespace android::inputdispatcher::trace {
/**
* A representation of an Android KeyEvent used by the tracing backend.
*/
struct TracedKeyEvent {
int32_t id;
nsecs_t eventTime;
uint32_t policyFlags;
int32_t deviceId;
uint32_t source;
int32_t displayId;
int32_t action;
int32_t keyCode;
int32_t scanCode;
int32_t metaState;
nsecs_t downTime;
int32_t flags;
int32_t repeatCount;
};
/**
* A representation of an Android MotionEvent used by the tracing backend.
*/
struct TracedMotionEvent {
int32_t id;
nsecs_t eventTime;
uint32_t policyFlags;
int32_t deviceId;
uint32_t source;
int32_t displayId;
int32_t action;
int32_t actionButton;
int32_t flags;
int32_t metaState;
int32_t buttonState;
MotionClassification classification;
int32_t edgeFlags;
float xPrecision;
float yPrecision;
float xCursorPosition;
float yCursorPosition;
nsecs_t downTime;
std::vector<PointerProperties> pointerProperties;
std::vector<PointerCoords> pointerCoords;
};
/** A representation of a traced input event. */
using TracedEvent = std::variant<TracedKeyEvent, TracedMotionEvent>;
/**
* An interface for the tracing backend, used for setting a custom backend for testing.
*/
class InputTracingBackendInterface {
public:
virtual ~InputTracingBackendInterface() = default;
/** Trace a KeyEvent. */
virtual void traceKeyEvent(const TracedKeyEvent&) = 0;
/** Trace a MotionEvent. */
virtual void traceMotionEvent(const TracedMotionEvent&) = 0;
/** Trace an event being sent to a window. */
struct WindowDispatchArgs {
TracedEvent eventEntry;
nsecs_t deliveryTime;
int32_t resolvedFlags;
gui::Uid targetUid;
int64_t vsyncId;
int32_t windowId;
ui::Transform transform;
ui::Transform rawTransform;
std::array<uint8_t, 32> hmac;
};
virtual void traceWindowDispatch(const WindowDispatchArgs&) = 0;
};
} // namespace android::inputdispatcher::trace
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