Reland "InputDevice: return std::optional from getAbsoluteAxisInfo"
This reverts commit 09163b73b3f591b882a1daea695722e52eee37ed.
Reason for revert: Reland after addressing incorrect assumptions
Bug: 245989146
Test: Presbumit
Flag: EXEMPT refactor
Change-Id: I455204bae78ff525543e58e6d258cedba38c006c
diff --git a/services/inputflinger/reader/include/EventHub.h b/services/inputflinger/reader/include/EventHub.h
index feae6b6..657126a 100644
--- a/services/inputflinger/reader/include/EventHub.h
+++ b/services/inputflinger/reader/include/EventHub.h
@@ -71,18 +71,14 @@
/* Describes an absolute axis. */
struct RawAbsoluteAxisInfo {
- bool valid{false}; // true if the information is valid, false otherwise
-
int32_t minValue{}; // minimum value
int32_t maxValue{}; // maximum value
int32_t flat{}; // center flat position, eg. flat == 8 means center is between -8 and 8
int32_t fuzz{}; // error tolerance, eg. fuzz == 4 means value is +/- 4 due to noise
int32_t resolution{}; // resolution in units per mm or radians per mm
-
- inline void clear() { *this = RawAbsoluteAxisInfo(); }
};
-std::ostream& operator<<(std::ostream& out, const RawAbsoluteAxisInfo& info);
+std::ostream& operator<<(std::ostream& out, const std::optional<RawAbsoluteAxisInfo>& info);
/*
* Input device classes.
diff --git a/services/inputflinger/reader/include/InputDevice.h b/services/inputflinger/reader/include/InputDevice.h
index 3844fab..1aed8a8 100644
--- a/services/inputflinger/reader/include/InputDevice.h
+++ b/services/inputflinger/reader/include/InputDevice.h
@@ -306,22 +306,17 @@
inline int32_t getDeviceControllerNumber() const {
return mEventHub->getDeviceControllerNumber(mId);
}
- inline status_t getAbsoluteAxisInfo(int32_t code, RawAbsoluteAxisInfo* axisInfo) const {
+ inline std::optional<RawAbsoluteAxisInfo> getAbsoluteAxisInfo(int32_t code) const {
std::optional<RawAbsoluteAxisInfo> info = mEventHub->getAbsoluteAxisInfo(mId, code);
- if (!info.has_value()) {
- axisInfo->clear();
- return NAME_NOT_FOUND;
- }
- *axisInfo = *info;
// Validate axis info for InputDevice.
- if (axisInfo->valid && axisInfo->minValue == axisInfo->maxValue) {
+ if (info && info->minValue == info->maxValue) {
// Historically, we deem axes with the same min and max values as invalid to avoid
// dividing by zero when scaling by max - min.
// TODO(b/291772515): Perform axis info validation on a per-axis basis when it is used.
- axisInfo->valid = false;
+ return std::nullopt;
}
- return OK;
+ return info;
}
inline bool hasRelativeAxis(int32_t code) const {
return mEventHub->hasRelativeAxis(mId, code);
@@ -436,8 +431,7 @@
}
inline bool hasAbsoluteAxis(int32_t code) const {
- std::optional<RawAbsoluteAxisInfo> info = mEventHub->getAbsoluteAxisInfo(mId, code);
- return info.has_value() && info->valid;
+ return mEventHub->getAbsoluteAxisInfo(mId, code).has_value();
}
inline bool isKeyPressed(int32_t scanCode) const {
return mEventHub->getScanCodeState(mId, scanCode) == AKEY_STATE_DOWN;