InputReader触摸调用流程
请部分请参考android Input专题- Q/R/S 10/11/12 InputReader源码分析1_learnframework的博客-CSDN博客
1、frameworks/native/services/inputflinger/InputReader.cpp
void InputReader::processEventsLocked(const RawEvent* rawEvents, size_t count) {
#if DEBUG_RAW_EVENTS
ALOGD("BatchSize: %d Count: %d", batchSize, count);
#endif
processEventsForDeviceLocked(deviceId, rawEvent, batchSize);
} else {
}
2、frameworks/native/services/inputflinger/InputReader.cpp
void InputReader::processEventsForDeviceLocked(int32_t deviceId,
const RawEvent* rawEvents, size_t count) {
ssize_t deviceIndex = mDevices.indexOfKey(deviceId);
if (deviceIndex < 0) {
ALOGW("Discarding event for unknown deviceId %d.", deviceId);
return;
}
InputDevice* device = mDevices.valueAt(deviceIndex);
if (device->isIgnored()) {
//ALOGD("Discarding event for ignored deviceId %d.", deviceId);
return;
}
device->process(rawEvents, count);
}
3、frameworks/native/services/inputflinger/InputReader.cpp
void InputDevice::process(const RawEvent* rawEvents, size_t count) {
} else {
for (size_t i = 0; i < numMappers; i++) {
InputMapper* mapper = mMappers[i];
mapper->process(rawEvent);
}
4、MultiTouchInputMapper多指触摸
void MultiTouchInputMapper::process(const RawEvent* rawEvent) {
TouchInputMapper::process(rawEvent);
mMultiTouchMotionAccumulator.process(rawEvent);
}
5、TouchInputMapper
void TouchInputMapper::process(const RawEvent* rawEvent) {
if (rawEvent->type == EV_SYN && rawEvent->code == SYN_REPORT) {
sync(rawEvent->when);
}
}
6、TouchInputMapper
void TouchInputMapper::sync(nsecs_t when) {
// Sync touch
syncTouch(when, next);
// Assign pointer ids.
if (!mHavePointerIds) {
assignPointerIds(last, next);
}
processRawTouches(false /*timeout*/);
}
7、MultiTouchInputMapper
void MultiTouchInputMapper::syncTouch(nsecs_t when, RawState* outState) {
size_t inCount = mMultiTouchMotionAccumulator.getSlotCount();
size_t outCount = 0;
BitSet32 newPointerIdBits;
mHavePointerIds = true;
mMultiTouchMotionAccumulator.finishSync();
}
8、TouchInputMapper
void TouchInputMapper::processRawTouches(bool timeout) {
for (count = 0; count < N; count++) {
// All ready to go.
clearStylusDataPendingFlags();
mCurrentRawState.copyFrom(next);
cookAndDispatch(mCurrentRawState.when);
}
}
9、TouchInputMapper
void TouchInputMapper::cookAndDispatch(nsecs_t when) {
cookPointerData();
// Apply stylus pressure to current cooked state.
applyExternalStylusTouchState(when);
if (!mCurrentMotionAborted) {
dispatchButtonRelease(when, policyFlags);
dispatchHoverExit(when, policyFlags);
dispatchTouches(when, policyFlags);
dispatchHoverEnterAndMove(when, policyFlags);
dispatchButtonPress(when, policyFlags);
}
}
10、TouchInputMapper
void TouchInputMapper::dispatchTouches(nsecs_t when, uint32_t policyFlags) {
dispatchMotion(when, policyFlags, mSource, AMOTION_EVENT_ACTION_MOVE, 0, 0, metaState,
buttonState, 0, mCurrentCookedState.cookedPointerData.pointerProperties,
mCurrentCookedState.cookedPointerData.pointerCoords,
mCurrentCookedState.cookedPointerData.idToIndex, dispatchedIdBits, -1,
mOrientedXPrecision, mOrientedYPrecision, mDownTime);
}
11、TouchInputMapper
void TouchInputMapper::dispatchMotion(.....){
NotifyMotionArgs args(getContext()->getNextId(), when, readTime, deviceId, source, displayId,
policyFlags, action, actionButton, flags, metaState, buttonState,
MotionClassification::NONE, edgeFlags, pointerCount, pointerProperties,
pointerCoords, xPrecision, yPrecision, xCursorPosition, yCursorPosition,
downTime, std::move(frames));
getListener().notifyMotion(&args);
}
12、InputDispatcher
void InputDispatcher::notifyMotion(const NotifyMotionArgs* args) {
}