Extend VHAL test property to allow inject events

This is needed for e2e testing, specifically to emulate steering-wheel
buttons from KitchenSink app

Bug: 74616964
Test: manual through kitchensink app
Change-Id: I08de2404f9e17af6b08c2cb1f0fbdc45c655a405

automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h

@@ -46,18 +46,35 @@ constexpr int ALL_WHEELS =
  *
  * It has the following format:
  *
- * int32Values[0] - command (1 - start fake data generation, 0 - stop)
+ * int32Values[0] - command (see FakeDataCommand below for possible values)
  * int32Values[1] - VehicleProperty to which command applies
- *
- * For start command, additional data should be provided:
- *   int64Values[0] - periodic interval in nanoseconds
- *   floatValues[0] - initial value
- *   floatValues[1] - dispersion defines min and max range relative to initial value
- *   floatValues[2] - increment, with every timer tick the value will be incremented by this amount
  */
 const int32_t kGenerateFakeDataControllingProperty =
     0x0666 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
 
+enum class FakeDataCommand : int32_t {
+    /** Stops generating of fake data that was triggered by Start command */
+    Stop = 0,
+
+    /**
+     * Starts fake data generation.  Caller must provide additional data:
+     *     int64Values[0] - periodic interval in nanoseconds
+     *     floatValues[0] - initial value
+     *     floatValues[1] - dispersion defines min and max range relative to initial value
+     *     floatValues[2] - increment, with every timer tick the value will be incremented by this
+     * amount
+     */
+    Start = 1,
+
+    /**
+     * Injects key press event (HAL incorporates UP/DOWN acction and triggers 2 HAL events for every
+     * key-press). Caller must provide the following data: int32Values[2] - Android key code
+     *     int32Values[3] - target display (0 - for main display, 1 - for instrument cluster, see
+     * VehicleDisplay)
+     */
+    KeyPress = 2,
+};
+
 const int32_t kHvacPowerProperties[] = {
     toInt(VehicleProperty::HVAC_FAN_SPEED),
     toInt(VehicleProperty::HVAC_FAN_DIRECTION),

automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp

@@ -85,11 +85,6 @@ static std::unique_ptr<Obd2SensorStore> fillDefaultObd2Frame(size_t numVendorInt
     return sensorStore;
 }
 
-enum class FakeDataCommand : int32_t {
-    Stop = 0,
-    Start = 1,
-};
-
 EmulatedVehicleHal::EmulatedVehicleHal(VehiclePropertyStore* propStore)
     : mPropStore(propStore),
       mHvacPowerProps(std::begin(kHvacPowerProperties), std::end(kHvacPowerProperties)),
@@ -360,10 +355,20 @@ StatusCode EmulatedVehicleHal::handleGenerateFakeDataRequest(const VehiclePropVa
             break;
         }
         case FakeDataCommand::Stop: {
-            ALOGI("%s, FakeDataCommandStop", __func__);
+            ALOGI("%s, FakeDataCommand::Stop", __func__);
             mFakeValueGenerator.stopGeneratingHalEvents(propId);
             break;
         }
+        case FakeDataCommand::KeyPress: {
+            ALOGI("%s, FakeDataCommand::KeyPress", __func__);
+            int32_t keyCode = request.value.int32Values[2];
+            int32_t display = request.value.int32Values[3];
+            doHalEvent(
+                createHwInputKeyProp(VehicleHwKeyInputAction::ACTION_DOWN, keyCode, display));
+            doHalEvent(createHwInputKeyProp(VehicleHwKeyInputAction::ACTION_UP, keyCode, display));
+            break;
+        }
+
         default: {
             ALOGE("%s: unexpected command: %d", __func__, command);
             return StatusCode::INVALID_ARG;
@@ -372,6 +377,19 @@ StatusCode EmulatedVehicleHal::handleGenerateFakeDataRequest(const VehiclePropVa
     return StatusCode::OK;
 }
 
+VehicleHal::VehiclePropValuePtr EmulatedVehicleHal::createHwInputKeyProp(
+    VehicleHwKeyInputAction action, int32_t keyCode, int32_t targetDisplay) {
+    auto keyEvent = getValuePool()->obtain(VehiclePropertyType::INT32_VEC, 3);
+    keyEvent->prop = toInt(VehicleProperty::HW_KEY_INPUT);
+    keyEvent->areaId = 0;
+    keyEvent->timestamp = elapsedRealtimeNano();
+    keyEvent->status = VehiclePropertyStatus::AVAILABLE;
+    keyEvent->value.int32Values[0] = toInt(action);
+    keyEvent->value.int32Values[1] = keyCode;
+    keyEvent->value.int32Values[2] = targetDisplay;
+    return keyEvent;
+}
+
 void EmulatedVehicleHal::onFakeValueGenerated(int32_t propId, float value) {
     VehiclePropValuePtr updatedPropValue {};
     switch (getPropType(propId)) {

automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.h

@@ -67,6 +67,8 @@ private:
 
     StatusCode handleGenerateFakeDataRequest(const VehiclePropValue& request);
     void onFakeValueGenerated(int32_t propId, float value);
+    VehiclePropValuePtr createHwInputKeyProp(VehicleHwKeyInputAction action, int32_t keyCode,
+                                             int32_t targetDisplay);
 
     void onContinuousPropertyTimer(const std::vector<int32_t>& properties);
     bool isContinuousProperty(int32_t propId) const;