InputMapper refactor: Configure empty InputDevice am: 7f4dd5124c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/23316820

Change-Id: I991b66c2d538cb03c0ab6486fdf3d3ecd6432535
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

4 files changed, 40 insertions, 34 deletions

diff --git a/services/inputflinger/reader/InputDevice.cpp b/services/inputflinger/reader/InputDevice.cpp
index 0a64a1c4a8..90ba003846 100644
--- a/services/inputflinger/reader/InputDevice.cpp
+++ b/services/inputflinger/reader/InputDevice.cpp
@@ -151,21 +151,22 @@ void InputDevice::addEmptyEventHubDevice(int32_t eventHubId) {
         return;
     }
     std::unique_ptr<InputDeviceContext> contextPtr(new InputDeviceContext(*this, eventHubId));
-    std::vector<std::unique_ptr<InputMapper>> mappers;
-
-    mDevices.insert({eventHubId, std::make_pair(std::move(contextPtr), std::move(mappers))});
-}
-
-void InputDevice::addEventHubDevice(int32_t eventHubId,
-                                    const InputReaderConfiguration& readerConfig) {
-    if (mDevices.find(eventHubId) != mDevices.end()) {
-        return;
-    }
-    std::unique_ptr<InputDeviceContext> contextPtr(new InputDeviceContext(*this, eventHubId));
-    std::vector<std::unique_ptr<InputMapper>> mappers = createMappers(*contextPtr, readerConfig);
-
-    // insert the context into the devices set
-    mDevices.insert({eventHubId, std::make_pair(std::move(contextPtr), std::move(mappers))});
+    mDevices.insert(
+            {eventHubId,
+             std::make_pair<std::unique_ptr<InputDeviceContext>,
+                            std::vector<std::unique_ptr<InputMapper>>>(std::move(contextPtr), {})});
+}
+
+void InputDevice::populateMappers(int32_t eventHubId,
+                                  const InputReaderConfiguration& readerConfig) {
+    auto targetDevice = mDevices.find(eventHubId);
+    LOG_ALWAYS_FATAL_IF(targetDevice == mDevices.end(),
+                        "InputDevice::populateMappers(): missing device with eventHubId %d ",
+                        eventHubId);
+    // create and add mappers to device
+    InputDeviceContext& context = *targetDevice->second.first;
+    std::vector<std::unique_ptr<InputMapper>> mappers = createMappers(context, readerConfig);
+    targetDevice->second.second = std::move(mappers);
     // Must change generation to flag this device as changed
     bumpGeneration();
 }
@@ -440,29 +441,29 @@ int32_t InputDevice::getState(uint32_t sourceMask, int32_t code, GetStateFunc ge
 }
 
 std::vector<std::unique_ptr<InputMapper>> InputDevice::createMappers(
-        InputDeviceContext& contextPtr, const InputReaderConfiguration& readerConfig) {
-    ftl::Flags<InputDeviceClass> classes = contextPtr.getDeviceClasses();
+        InputDeviceContext& context, const InputReaderConfiguration& readerConfig) {
+    ftl::Flags<InputDeviceClass> classes = context.getDeviceClasses();
     std::vector<std::unique_ptr<InputMapper>> mappers;
 
     // Switch-like devices.
     if (classes.test(InputDeviceClass::SWITCH)) {
-        mappers.push_back(createInputMapper<SwitchInputMapper>(contextPtr, readerConfig));
+        mappers.push_back(createInputMapper<SwitchInputMapper>(context, readerConfig));
     }
 
     // Scroll wheel-like devices.
     if (classes.test(InputDeviceClass::ROTARY_ENCODER)) {
-        mappers.push_back(createInputMapper<RotaryEncoderInputMapper>(contextPtr, readerConfig));
+        mappers.push_back(createInputMapper<RotaryEncoderInputMapper>(context, readerConfig));
     }
 
     // Vibrator-like devices.
     if (classes.test(InputDeviceClass::VIBRATOR)) {
-        mappers.push_back(createInputMapper<VibratorInputMapper>(contextPtr, readerConfig));
+        mappers.push_back(createInputMapper<VibratorInputMapper>(context, readerConfig));
     }
 
     // Battery-like devices or light-containing devices.
     // PeripheralController will be created with associated EventHub device.
     if (classes.test(InputDeviceClass::BATTERY) || classes.test(InputDeviceClass::LIGHT)) {
-        mController = std::make_unique<PeripheralController>(contextPtr);
+        mController = std::make_unique<PeripheralController>(context);
     }
 
     // Keyboard-like devices.
@@ -482,13 +483,13 @@ std::vector<std::unique_ptr<InputMapper>> InputDevice::createMappers(
     }
 
     if (keyboardSource != 0) {
-        mappers.push_back(createInputMapper<KeyboardInputMapper>(contextPtr, readerConfig,
+        mappers.push_back(createInputMapper<KeyboardInputMapper>(context, readerConfig,
                                                                  keyboardSource, keyboardType));
     }
 
     // Cursor-like devices.
     if (classes.test(InputDeviceClass::CURSOR)) {
-        mappers.push_back(createInputMapper<CursorInputMapper>(contextPtr, readerConfig));
+        mappers.push_back(createInputMapper<CursorInputMapper>(context, readerConfig));
     }
 
     // Touchscreens and touchpad devices.
@@ -496,31 +497,31 @@ std::vector<std::unique_ptr<InputMapper>> InputDevice::createMappers(
             sysprop::InputProperties::enable_touchpad_gestures_library().value_or(true);
     // TODO(b/272518665): Fix the new touchpad stack for Sony DualShock 4 (5c4, 9cc) touchpads, or
     // at least load this setting from the IDC file.
-    const InputDeviceIdentifier identifier = contextPtr.getDeviceIdentifier();
+    const InputDeviceIdentifier identifier = context.getDeviceIdentifier();
     const bool isSonyDualShock4Touchpad = identifier.vendor == 0x054c &&
             (identifier.product == 0x05c4 || identifier.product == 0x09cc);
     if (ENABLE_TOUCHPAD_GESTURES_LIBRARY && classes.test(InputDeviceClass::TOUCHPAD) &&
         classes.test(InputDeviceClass::TOUCH_MT) && !isSonyDualShock4Touchpad) {
-        mappers.push_back(createInputMapper<TouchpadInputMapper>(contextPtr, readerConfig));
+        mappers.push_back(createInputMapper<TouchpadInputMapper>(context, readerConfig));
     } else if (classes.test(InputDeviceClass::TOUCH_MT)) {
-        mappers.push_back(std::make_unique<MultiTouchInputMapper>(contextPtr, readerConfig));
+        mappers.push_back(std::make_unique<MultiTouchInputMapper>(context, readerConfig));
     } else if (classes.test(InputDeviceClass::TOUCH)) {
-        mappers.push_back(std::make_unique<SingleTouchInputMapper>(contextPtr, readerConfig));
+        mappers.push_back(std::make_unique<SingleTouchInputMapper>(context, readerConfig));
     }
 
     // Joystick-like devices.
     if (classes.test(InputDeviceClass::JOYSTICK)) {
-        mappers.push_back(createInputMapper<JoystickInputMapper>(contextPtr, readerConfig));
+        mappers.push_back(createInputMapper<JoystickInputMapper>(context, readerConfig));
     }
 
     // Motion sensor enabled devices.
     if (classes.test(InputDeviceClass::SENSOR)) {
-        mappers.push_back(createInputMapper<SensorInputMapper>(contextPtr, readerConfig));
+        mappers.push_back(createInputMapper<SensorInputMapper>(context, readerConfig));
     }
 
     // External stylus-like devices.
     if (classes.test(InputDeviceClass::EXTERNAL_STYLUS)) {
-        mappers.push_back(createInputMapper<ExternalStylusInputMapper>(contextPtr, readerConfig));
+        mappers.push_back(createInputMapper<ExternalStylusInputMapper>(context, readerConfig));
     }
     return mappers;
 }
diff --git a/services/inputflinger/reader/InputReader.cpp b/services/inputflinger/reader/InputReader.cpp
index ea95f7857a..8a33dff868 100644
--- a/services/inputflinger/reader/InputReader.cpp
+++ b/services/inputflinger/reader/InputReader.cpp
@@ -334,7 +334,9 @@ std::shared_ptr<InputDevice> InputReader::createDeviceLocked(
         device = std::make_shared<InputDevice>(&mContext, deviceId, bumpGenerationLocked(),
                                                identifier);
     }
-    device->addEventHubDevice(eventHubId, mConfig);
+    device->addEmptyEventHubDevice(eventHubId);
+    auto unused = device->configure(systemTime(SYSTEM_TIME_MONOTONIC), mConfig, /*changes=*/{});
+    device->populateMappers(eventHubId, mConfig);
     return device;
 }
 
diff --git a/services/inputflinger/reader/include/InputDevice.h b/services/inputflinger/reader/include/InputDevice.h
index 0b8a608891..1729d4620d 100644
--- a/services/inputflinger/reader/include/InputDevice.h
+++ b/services/inputflinger/reader/include/InputDevice.h
@@ -81,7 +81,7 @@ public:
 
     void dump(std::string& dump, const std::string& eventHubDevStr);
     void addEmptyEventHubDevice(int32_t eventHubId);
-    void addEventHubDevice(int32_t eventHubId, const InputReaderConfiguration& readerConfig);
+    void populateMappers(int32_t eventHubId, const InputReaderConfiguration& readerConfig);
     void removeEventHubDevice(int32_t eventHubId);
     [[nodiscard]] std::list<NotifyArgs> configure(nsecs_t when,
                                                   const InputReaderConfiguration& readerConfig,
@@ -203,7 +203,7 @@ private:
     int32_t getState(uint32_t sourceMask, int32_t code, GetStateFunc getStateFunc);
 
     std::vector<std::unique_ptr<InputMapper>> createMappers(
-            InputDeviceContext& contextPtr, const InputReaderConfiguration& readerConfig);
+            InputDeviceContext& context, const InputReaderConfiguration& readerConfig);
 
     PropertyMap mConfiguration;
 
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index bfb371f02a..c045e15f19 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -2584,7 +2584,10 @@ TEST_F(InputDeviceTest, DumpDoesNotCrash) {
     mFakeEventHub->addDevice(TEST_EVENTHUB_ID, "Test EventHub device", InputDeviceClass::BATTERY);
 
     InputDevice device(mReader->getContext(), /*id=*/1, /*generation=*/2, /*identifier=*/{});
-    device.addEventHubDevice(TEST_EVENTHUB_ID, mFakePolicy->getReaderConfiguration());
+    device.addEmptyEventHubDevice(TEST_EVENTHUB_ID);
+    auto unused = device.configure(systemTime(SYSTEM_TIME_MONOTONIC),
+                                   mFakePolicy->getReaderConfiguration(), /*changes=*/{});
+    device.populateMappers(TEST_EVENTHUB_ID, mFakePolicy->getReaderConfiguration());
     device.removeEventHubDevice(TEST_EVENTHUB_ID);
     std::string dumpStr, eventHubDevStr;
     device.dump(dumpStr, eventHubDevStr);