Default implementation for IFingerprint

Bug: 152416783
Test: atest VtsHalBiometricsFingerprintTargetTest
Test: atest vts_treble_vintf_vendor_test
Test: atest hal_implementation_test
Change-Id: I67efda2d5418147a7cac9cc54920005a199fcbe3
diff --git a/biometrics/fingerprint/aidl/default/main.cpp b/biometrics/fingerprint/aidl/default/main.cpp
new file mode 100644
index 0000000..058a008
--- /dev/null
+++ b/biometrics/fingerprint/aidl/default/main.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2020 The Android Open Source 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.
+ */
+
+#include "Fingerprint.h"
+
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+
+using aidl::android::hardware::biometrics::fingerprint::Fingerprint;
+
+int main() {
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+    std::shared_ptr<Fingerprint> hal = ndk::SharedRefBase::make<Fingerprint>();
+
+    const std::string instance = std::string(Fingerprint::descriptor) + "/default";
+    binder_status_t status = AServiceManager_addService(hal->asBinder().get(), instance.c_str());
+    CHECK(status == STATUS_OK);
+
+    ABinderProcess_joinThreadPool();
+    return EXIT_FAILURE;  // should not reach
+}