diff --git a/services/inputflinger/reader/EventHub.cpp b/services/inputflinger/reader/EventHub.cpp
index 669d2e1..6a8ed49 100644
--- a/services/inputflinger/reader/EventHub.cpp
+++ b/services/inputflinger/reader/EventHub.cpp
@@ -952,20 +952,20 @@
     return -1;
 }
 
-bool EventHub::markSupportedKeyCodes(int32_t deviceId, size_t numCodes, const int32_t* keyCodes,
+bool EventHub::markSupportedKeyCodes(int32_t deviceId, const std::vector<int32_t>& keyCodes,
                                      uint8_t* outFlags) const {
     std::scoped_lock _l(mLock);
 
     Device* device = getDeviceLocked(deviceId);
     if (device != nullptr && device->keyMap.haveKeyLayout()) {
-        for (size_t codeIndex = 0; codeIndex < numCodes; codeIndex++) {
+        for (size_t codeIndex = 0; codeIndex < keyCodes.size(); codeIndex++) {
             std::vector<int32_t> scanCodes =
                     device->keyMap.keyLayoutMap->findScanCodesForKey(keyCodes[codeIndex]);
 
             // check the possible scan codes identified by the layout map against the
             // map of codes actually emitted by the driver
-            for (size_t sc = 0; sc < scanCodes.size(); sc++) {
-                if (device->keyBitmask.test(scanCodes[sc])) {
+            for (const int32_t scanCode : scanCodes) {
+                if (device->keyBitmask.test(scanCode)) {
                     outFlags[codeIndex] = 1;
                     break;
                 }
diff --git a/services/inputflinger/reader/InputDevice.cpp b/services/inputflinger/reader/InputDevice.cpp
index ba5083b..b67777f 100644
--- a/services/inputflinger/reader/InputDevice.cpp
+++ b/services/inputflinger/reader/InputDevice.cpp
@@ -465,12 +465,12 @@
     return result;
 }
 
-bool InputDevice::markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes,
-                                        const int32_t* keyCodes, uint8_t* outFlags) {
+bool InputDevice::markSupportedKeyCodes(uint32_t sourceMask, const std::vector<int32_t>& keyCodes,
+                                        uint8_t* outFlags) {
     bool result = false;
-    for_each_mapper([&result, sourceMask, numCodes, keyCodes, outFlags](InputMapper& mapper) {
+    for_each_mapper([&result, sourceMask, keyCodes, outFlags](InputMapper& mapper) {
         if (sourcesMatchMask(mapper.getSources(), sourceMask)) {
-            result |= mapper.markSupportedKeyCodes(sourceMask, numCodes, keyCodes, outFlags);
+            result |= mapper.markSupportedKeyCodes(sourceMask, keyCodes, outFlags);
         }
     });
     return result;
diff --git a/services/inputflinger/reader/InputReader.cpp b/services/inputflinger/reader/InputReader.cpp
index 9c5a129..79901f0 100644
--- a/services/inputflinger/reader/InputReader.cpp
+++ b/services/inputflinger/reader/InputReader.cpp
@@ -561,28 +561,28 @@
     device->updateMetaState(AKEYCODE_CAPS_LOCK);
 }
 
-bool InputReader::hasKeys(int32_t deviceId, uint32_t sourceMask, size_t numCodes,
-                          const int32_t* keyCodes, uint8_t* outFlags) {
+bool InputReader::hasKeys(int32_t deviceId, uint32_t sourceMask,
+                          const std::vector<int32_t>& keyCodes, uint8_t* outFlags) {
     std::scoped_lock _l(mLock);
 
-    memset(outFlags, 0, numCodes);
-    return markSupportedKeyCodesLocked(deviceId, sourceMask, numCodes, keyCodes, outFlags);
+    memset(outFlags, 0, keyCodes.size());
+    return markSupportedKeyCodesLocked(deviceId, sourceMask, keyCodes, outFlags);
 }
 
 bool InputReader::markSupportedKeyCodesLocked(int32_t deviceId, uint32_t sourceMask,
-                                              size_t numCodes, const int32_t* keyCodes,
+                                              const std::vector<int32_t>& keyCodes,
                                               uint8_t* outFlags) {
     bool result = false;
     if (deviceId >= 0) {
         InputDevice* device = findInputDeviceLocked(deviceId);
         if (device && !device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) {
-            result = device->markSupportedKeyCodes(sourceMask, numCodes, keyCodes, outFlags);
+            result = device->markSupportedKeyCodes(sourceMask, keyCodes, outFlags);
         }
     } else {
         for (auto& devicePair : mDevices) {
             std::shared_ptr<InputDevice>& device = devicePair.second;
             if (!device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) {
-                result |= device->markSupportedKeyCodes(sourceMask, numCodes, keyCodes, outFlags);
+                result |= device->markSupportedKeyCodes(sourceMask, keyCodes, outFlags);
             }
         }
     }
diff --git a/services/inputflinger/reader/include/EventHub.h b/services/inputflinger/reader/include/EventHub.h
index 130c556..5453ebb 100644
--- a/services/inputflinger/reader/include/EventHub.h
+++ b/services/inputflinger/reader/include/EventHub.h
@@ -311,7 +311,7 @@
     /*
      * Examine key input devices for specific framework keycode support
      */
-    virtual bool markSupportedKeyCodes(int32_t deviceId, size_t numCodes, const int32_t* keyCodes,
+    virtual bool markSupportedKeyCodes(int32_t deviceId, const std::vector<int32_t>& keyCodes,
                                        uint8_t* outFlags) const = 0;
 
     virtual bool hasScanCode(int32_t deviceId, int32_t scanCode) const = 0;
@@ -488,7 +488,7 @@
     status_t getAbsoluteAxisValue(int32_t deviceId, int32_t axis,
                                   int32_t* outValue) const override final;
 
-    bool markSupportedKeyCodes(int32_t deviceId, size_t numCodes, const int32_t* keyCodes,
+    bool markSupportedKeyCodes(int32_t deviceId, const std::vector<int32_t>& keyCodes,
                                uint8_t* outFlags) const override final;
 
     size_t getEvents(int timeoutMillis, RawEvent* buffer, size_t bufferSize) override final;
diff --git a/services/inputflinger/reader/include/InputDevice.h b/services/inputflinger/reader/include/InputDevice.h
index 728020e..51872ac 100644
--- a/services/inputflinger/reader/include/InputDevice.h
+++ b/services/inputflinger/reader/include/InputDevice.h
@@ -88,7 +88,7 @@
     int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode);
     int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode);
     int32_t getKeyCodeForKeyLocation(int32_t locationKeyCode) const;
-    bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, const int32_t* keyCodes,
+    bool markSupportedKeyCodes(uint32_t sourceMask, const std::vector<int32_t>& keyCodes,
                                uint8_t* outFlags);
     void vibrate(const VibrationSequence& sequence, ssize_t repeat, int32_t token);
     void cancelVibrate(int32_t token);
@@ -324,9 +324,9 @@
     inline status_t getAbsoluteAxisValue(int32_t code, int32_t* outValue) const {
         return mEventHub->getAbsoluteAxisValue(mId, code, outValue);
     }
-    inline bool markSupportedKeyCodes(size_t numCodes, const int32_t* keyCodes,
+    inline bool markSupportedKeyCodes(const std::vector<int32_t>& keyCodes,
                                       uint8_t* outFlags) const {
-        return mEventHub->markSupportedKeyCodes(mId, numCodes, keyCodes, outFlags);
+        return mEventHub->markSupportedKeyCodes(mId, keyCodes, outFlags);
     }
     inline bool hasScanCode(int32_t scanCode) const {
         return mEventHub->hasScanCode(mId, scanCode);
diff --git a/services/inputflinger/reader/include/InputReader.h b/services/inputflinger/reader/include/InputReader.h
index daeaa1d..ae41e01 100644
--- a/services/inputflinger/reader/include/InputReader.h
+++ b/services/inputflinger/reader/include/InputReader.h
@@ -73,7 +73,7 @@
 
     void toggleCapsLockState(int32_t deviceId) override;
 
-    bool hasKeys(int32_t deviceId, uint32_t sourceMask, size_t numCodes, const int32_t* keyCodes,
+    bool hasKeys(int32_t deviceId, uint32_t sourceMask, const std::vector<int32_t>& keyCodes,
                  uint8_t* outFlags) override;
 
     void requestRefreshConfiguration(uint32_t changes) override;
@@ -237,8 +237,9 @@
     typedef int32_t (InputDevice::*GetStateFunc)(uint32_t sourceMask, int32_t code);
     int32_t getStateLocked(int32_t deviceId, uint32_t sourceMask, int32_t code,
                            GetStateFunc getStateFunc) REQUIRES(mLock);
-    bool markSupportedKeyCodesLocked(int32_t deviceId, uint32_t sourceMask, size_t numCodes,
-                                     const int32_t* keyCodes, uint8_t* outFlags) REQUIRES(mLock);
+    bool markSupportedKeyCodesLocked(int32_t deviceId, uint32_t sourceMask,
+                                     const std::vector<int32_t>& keyCodes, uint8_t* outFlags)
+            REQUIRES(mLock);
 
     // find an InputDevice from an InputDevice id
     InputDevice* findInputDeviceLocked(int32_t deviceId) const REQUIRES(mLock);
diff --git a/services/inputflinger/reader/mapper/InputMapper.cpp b/services/inputflinger/reader/mapper/InputMapper.cpp
index 7b185e0..75cebf3 100644
--- a/services/inputflinger/reader/mapper/InputMapper.cpp
+++ b/services/inputflinger/reader/mapper/InputMapper.cpp
@@ -55,8 +55,8 @@
     return AKEYCODE_UNKNOWN;
 }
 
-bool InputMapper::markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes,
-                                        const int32_t* keyCodes, uint8_t* outFlags) {
+bool InputMapper::markSupportedKeyCodes(uint32_t sourceMask, const std::vector<int32_t>& keyCodes,
+                                        uint8_t* outFlags) {
     return false;
 }
 
diff --git a/services/inputflinger/reader/mapper/InputMapper.h b/services/inputflinger/reader/mapper/InputMapper.h
index fce6409..7858728 100644
--- a/services/inputflinger/reader/mapper/InputMapper.h
+++ b/services/inputflinger/reader/mapper/InputMapper.h
@@ -64,8 +64,8 @@
     virtual int32_t getSwitchState(uint32_t sourceMask, int32_t switchCode);
     virtual int32_t getKeyCodeForKeyLocation(int32_t locationKeyCode) const;
 
-    virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes,
-                                       const int32_t* keyCodes, uint8_t* outFlags);
+    virtual bool markSupportedKeyCodes(uint32_t sourceMask, const std::vector<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();
diff --git a/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp b/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp
index 2ac8178..8eb870f 100644
--- a/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp
@@ -379,9 +379,10 @@
     return getDeviceContext().getKeyCodeForKeyLocation(locationKeyCode);
 }
 
-bool KeyboardInputMapper::markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes,
-                                                const int32_t* keyCodes, uint8_t* outFlags) {
-    return getDeviceContext().markSupportedKeyCodes(numCodes, keyCodes, outFlags);
+bool KeyboardInputMapper::markSupportedKeyCodes(uint32_t sourceMask,
+                                                const std::vector<int32_t>& keyCodes,
+                                                uint8_t* outFlags) {
+    return getDeviceContext().markSupportedKeyCodes(keyCodes, outFlags);
 }
 
 int32_t KeyboardInputMapper::getMetaState() {
@@ -433,13 +434,12 @@
     mMetaState |= getContext()->getLedMetaState();
 
     constexpr int32_t META_NUM = 3;
-    const std::array<int32_t, META_NUM> keyCodes = {AKEYCODE_CAPS_LOCK, AKEYCODE_NUM_LOCK,
-                                                    AKEYCODE_SCROLL_LOCK};
+    const std::vector<int32_t> keyCodes{AKEYCODE_CAPS_LOCK, AKEYCODE_NUM_LOCK,
+                                        AKEYCODE_SCROLL_LOCK};
     const std::array<int32_t, META_NUM> metaCodes = {AMETA_CAPS_LOCK_ON, AMETA_NUM_LOCK_ON,
                                                      AMETA_SCROLL_LOCK_ON};
     std::array<uint8_t, META_NUM> flags = {0, 0, 0};
-    bool hasKeyLayout =
-            getDeviceContext().markSupportedKeyCodes(META_NUM, keyCodes.data(), flags.data());
+    bool hasKeyLayout = getDeviceContext().markSupportedKeyCodes(keyCodes, flags.data());
     // If the device doesn't have the physical meta key it shouldn't generate the corresponding
     // meta state.
     if (hasKeyLayout) {
diff --git a/services/inputflinger/reader/mapper/KeyboardInputMapper.h b/services/inputflinger/reader/mapper/KeyboardInputMapper.h
index 3787696..0a55def 100644
--- a/services/inputflinger/reader/mapper/KeyboardInputMapper.h
+++ b/services/inputflinger/reader/mapper/KeyboardInputMapper.h
@@ -36,8 +36,8 @@
 
     virtual int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode) override;
     virtual int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode) override;
-    virtual bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes,
-                                       const int32_t* keyCodes, uint8_t* outFlags) override;
+    virtual bool markSupportedKeyCodes(uint32_t sourceMask, const std::vector<int32_t>& keyCodes,
+                                       uint8_t* outFlags) override;
     virtual int32_t getKeyCodeForKeyLocation(int32_t locationKeyCode) const override;
 
     virtual int32_t getMetaState() override;
diff --git a/services/inputflinger/reader/mapper/TouchInputMapper.cpp b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
index 637b1cb..d6b72ed 100644
--- a/services/inputflinger/reader/mapper/TouchInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchInputMapper.cpp
@@ -4021,10 +4021,11 @@
     return AKEY_STATE_UNKNOWN;
 }
 
-bool TouchInputMapper::markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes,
-                                             const int32_t* keyCodes, uint8_t* outFlags) {
+bool TouchInputMapper::markSupportedKeyCodes(uint32_t sourceMask,
+                                             const std::vector<int32_t>& keyCodes,
+                                             uint8_t* outFlags) {
     for (const VirtualKey& virtualKey : mVirtualKeys) {
-        for (size_t i = 0; i < numCodes; i++) {
+        for (size_t i = 0; i < keyCodes.size(); i++) {
             if (virtualKey.keyCode == keyCodes[i]) {
                 outFlags[i] = 1;
             }
diff --git a/services/inputflinger/reader/mapper/TouchInputMapper.h b/services/inputflinger/reader/mapper/TouchInputMapper.h
index c948f56..714ad3f 100644
--- a/services/inputflinger/reader/mapper/TouchInputMapper.h
+++ b/services/inputflinger/reader/mapper/TouchInputMapper.h
@@ -147,7 +147,7 @@
 
     int32_t getKeyCodeState(uint32_t sourceMask, int32_t keyCode) override;
     int32_t getScanCodeState(uint32_t sourceMask, int32_t scanCode) override;
-    bool markSupportedKeyCodes(uint32_t sourceMask, size_t numCodes, const int32_t* keyCodes,
+    bool markSupportedKeyCodes(uint32_t sourceMask, const std::vector<int32_t>& keyCodes,
                                uint8_t* outFlags) override;
 
     void cancelTouch(nsecs_t when, nsecs_t readTime) override;