hidl: Setup touchscreen gestures with Lineage touch HIDL HAL

This takes advantage of the touchscreen gesture nodes exposed by Oplus
touchscreen drivers.

Change-Id: I5a43b8f922a8d1c940e367d22d377b7161913d3a

hidl/touch/service.cpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2022 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "vendor.lineage.touch@1.0-service.oplus"
+
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+#include <touch/oplus/TouchscreenGesture.h>
+
+using android::sp;
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+
+using vendor::lineage::touch::V1_0::ITouchscreenGesture;
+using vendor::lineage::touch::V1_0::implementation::TouchscreenGesture;
+
+int main() {
+    sp<ITouchscreenGesture> gestureService = new TouchscreenGesture();
+
+    configureRpcThreadpool(1, true /*callerWillJoin*/);
+
+    if (gestureService->registerAsService() != android::OK) {
+        LOG(ERROR) << "Can't register TouchscreenGesture HAL service";
+        return 1;
+    }
+
+    joinRpcThreadpool();
+
+    return 0;  // should never get here
+}