Default implementation Gnss HAL

Test: On Angler, GPS location available on Maps. All interfaces other
than AGnssRil, AGnssNavigationMessage and GnssNi are functionally tested. AGnssRil and
AGnssNavigationMessage are not implemented by conventional GPS HALs in Google devices that would be
upgrading to O.

Bug:31974439

Change-Id: I66225225ed79bc1735d6dd27954b1f9f69ffc557
diff --git a/gnss/1.0/default/GnssNi.cpp b/gnss/1.0/default/GnssNi.cpp
new file mode 100644
index 0000000..10af1f4
--- /dev/null
+++ b/gnss/1.0/default/GnssNi.cpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#define LOG_TAG "GnssHAL_GnssNiInterface"
+
+#include "GnssNi.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+std::vector<std::unique_ptr<ThreadFuncArgs>> GnssNi::sThreadFuncArgsList;
+sp<IGnssNiCallback> GnssNi::sGnssNiCbIface = nullptr;
+bool GnssNi::sInterfaceExists = false;
+
+GpsNiCallbacks GnssNi::sGnssNiCb = {
+    .notify_cb = niNotifyCb,
+    .create_thread_cb = createThreadCb
+};
+
+GnssNi::GnssNi(const GpsNiInterface* gpsNiIface) : mGnssNiIface(gpsNiIface) {
+    /* Error out if an instance of the interface already exists. */
+    LOG_ALWAYS_FATAL_IF(sInterfaceExists);
+    sInterfaceExists = true;
+}
+
+GnssNi::~GnssNi() {
+    sThreadFuncArgsList.clear();
+}
+
+pthread_t GnssNi::createThreadCb(const char* name, void (*start)(void*), void* arg) {
+    return createPthread(name, start, arg, &sThreadFuncArgsList);
+}
+
+void GnssNi::niNotifyCb(GpsNiNotification* notification) {
+    if (sGnssNiCbIface == nullptr) {
+        ALOGE("%s: GNSS NI Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    if (notification == nullptr) {
+        ALOGE("%s: Invalid GpsNotification callback from GNSS HAL", __func__);
+        return;
+    }
+
+    IGnssNiCallback::GnssNiNotification notificationGnss = {
+        .notificationId =  notification->notification_id,
+        .niType = static_cast<IGnssNiCallback::GnssNiType>(notification->ni_type),
+        .notifyFlags =
+                static_cast<IGnssNiCallback::GnssNiNotifyFlags>(notification->notify_flags),
+        .timeoutSec = static_cast<uint32_t>(notification->timeout),
+        .defaultResponse =
+                static_cast<IGnssNiCallback::GnssUserResponseType>(notification->default_response),
+        .requestorId = notification->requestor_id,
+        .notificationMessage = notification->text,
+        .requestorIdEncoding =
+                static_cast<IGnssNiCallback::GnssNiEncodingType>(notification->requestor_id_encoding),
+        .notificationIdEncoding =
+                static_cast<IGnssNiCallback::GnssNiEncodingType>(notification->text_encoding)
+    };
+
+    sGnssNiCbIface->niNotifyCb(notificationGnss);
+}
+
+// Methods from ::android::hardware::gnss::V1_0::IGnssNi follow.
+Return<void> GnssNi::setCallback(const sp<IGnssNiCallback>& callback)  {
+    if (mGnssNiIface == nullptr) {
+       ALOGE("%s: GnssNi interface is unavailable", __func__);
+       return Void();
+    }
+
+    sGnssNiCbIface = callback;
+
+    mGnssNiIface->init(&sGnssNiCb);
+    return Void();
+}
+
+Return<void> GnssNi::respond(int32_t notifId, IGnssNiCallback::GnssUserResponseType userResponse)  {
+    if (mGnssNiIface == nullptr) {
+        ALOGE("%s: GnssNi interface is unavailable", __func__);
+    } else {
+        mGnssNiIface->respond(notifId, static_cast<GpsUserResponseType>(userResponse));
+    }
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android