| /* |
| * Copyright 2018 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 "BluetoothHearingAidServiceJni" |
| |
| #define LOG_NDEBUG 0 |
| |
| #include "base/logging.h" |
| #include "com_android_bluetooth.h" |
| #include "hardware/bt_hearing_aid.h" |
| |
| #include <string.h> |
| #include <shared_mutex> |
| |
| using bluetooth::hearing_aid::ConnectionState; |
| using bluetooth::hearing_aid::HearingAidInterface; |
| using bluetooth::hearing_aid::HearingAidCallbacks; |
| |
| namespace android { |
| static jmethodID method_onConnectionStateChanged; |
| static jmethodID method_onDeviceAvailable; |
| |
| static HearingAidInterface* sHearingAidInterface = nullptr; |
| static std::shared_timed_mutex interface_mutex; |
| |
| static jobject mCallbacksObj = nullptr; |
| static std::shared_timed_mutex callbacks_mutex; |
| |
| class HearingAidCallbacksImpl : public HearingAidCallbacks { |
| public: |
| ~HearingAidCallbacksImpl() = default; |
| void OnConnectionState(ConnectionState state, |
| const RawAddress& bd_addr) override { |
| LOG(INFO) << __func__; |
| |
| std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex); |
| CallbackEnv sCallbackEnv(__func__); |
| if (!sCallbackEnv.valid() || mCallbacksObj == nullptr) return; |
| |
| ScopedLocalRef<jbyteArray> addr( |
| sCallbackEnv.get(), sCallbackEnv->NewByteArray(sizeof(RawAddress))); |
| if (!addr.get()) { |
| LOG(ERROR) << "Failed to new jbyteArray bd addr for connection state"; |
| return; |
| } |
| |
| sCallbackEnv->SetByteArrayRegion(addr.get(), 0, sizeof(RawAddress), |
| (jbyte*)&bd_addr); |
| sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onConnectionStateChanged, |
| (jint)state, addr.get()); |
| } |
| |
| void OnDeviceAvailable(uint8_t capabilities, uint64_t hi_sync_id, |
| const RawAddress& bd_addr) override { |
| LOG(INFO) << __func__ << ": capabilities=" << +capabilities |
| << " hi_sync_id=" << hi_sync_id; |
| |
| std::shared_lock<std::shared_timed_mutex> lock(callbacks_mutex); |
| CallbackEnv sCallbackEnv(__func__); |
| if (!sCallbackEnv.valid() || mCallbacksObj == nullptr) return; |
| |
| ScopedLocalRef<jbyteArray> addr( |
| sCallbackEnv.get(), sCallbackEnv->NewByteArray(sizeof(RawAddress))); |
| if (!addr.get()) { |
| LOG(ERROR) << "Failed to new jbyteArray bd addr for connection state"; |
| return; |
| } |
| |
| sCallbackEnv->SetByteArrayRegion(addr.get(), 0, sizeof(RawAddress), |
| (jbyte*)&bd_addr); |
| sCallbackEnv->CallVoidMethod(mCallbacksObj, method_onDeviceAvailable, |
| (jbyte)capabilities, (jlong)hi_sync_id, |
| addr.get()); |
| } |
| }; |
| |
| static HearingAidCallbacksImpl sHearingAidCallbacks; |
| |
| static void classInitNative(JNIEnv* env, jclass clazz) { |
| method_onConnectionStateChanged = |
| env->GetMethodID(clazz, "onConnectionStateChanged", "(I[B)V"); |
| |
| method_onDeviceAvailable = |
| env->GetMethodID(clazz, "onDeviceAvailable", "(BJ[B)V"); |
| |
| LOG(INFO) << __func__ << ": succeeds"; |
| } |
| |
| static void initNative(JNIEnv* env, jobject object) { |
| std::unique_lock<std::shared_timed_mutex> interface_lock(interface_mutex); |
| std::unique_lock<std::shared_timed_mutex> callbacks_lock(callbacks_mutex); |
| |
| const bt_interface_t* btInf = getBluetoothInterface(); |
| if (btInf == nullptr) { |
| LOG(ERROR) << "Bluetooth module is not loaded"; |
| return; |
| } |
| |
| if (sHearingAidInterface != nullptr) { |
| LOG(INFO) << "Cleaning up HearingAid Interface before initializing..."; |
| sHearingAidInterface->Cleanup(); |
| sHearingAidInterface = nullptr; |
| } |
| |
| if (mCallbacksObj != nullptr) { |
| LOG(INFO) << "Cleaning up HearingAid callback object"; |
| env->DeleteGlobalRef(mCallbacksObj); |
| mCallbacksObj = nullptr; |
| } |
| |
| if ((mCallbacksObj = env->NewGlobalRef(object)) == nullptr) { |
| LOG(ERROR) << "Failed to allocate Global Ref for Hearing Aid Callbacks"; |
| return; |
| } |
| |
| sHearingAidInterface = (HearingAidInterface*)btInf->get_profile_interface( |
| BT_PROFILE_HEARING_AID_ID); |
| if (sHearingAidInterface == nullptr) { |
| LOG(ERROR) << "Failed to get Bluetooth Hearing Aid Interface"; |
| return; |
| } |
| |
| sHearingAidInterface->Init(&sHearingAidCallbacks); |
| } |
| |
| static void cleanupNative(JNIEnv* env, jobject object) { |
| std::unique_lock<std::shared_timed_mutex> interface_lock(interface_mutex); |
| std::unique_lock<std::shared_timed_mutex> callbacks_lock(callbacks_mutex); |
| |
| const bt_interface_t* btInf = getBluetoothInterface(); |
| if (btInf == nullptr) { |
| LOG(ERROR) << "Bluetooth module is not loaded"; |
| return; |
| } |
| |
| if (sHearingAidInterface != nullptr) { |
| sHearingAidInterface->Cleanup(); |
| sHearingAidInterface = nullptr; |
| } |
| |
| if (mCallbacksObj != nullptr) { |
| env->DeleteGlobalRef(mCallbacksObj); |
| mCallbacksObj = nullptr; |
| } |
| } |
| |
| static jboolean connectHearingAidNative(JNIEnv* env, jobject object, |
| jbyteArray address) { |
| LOG(INFO) << __func__; |
| std::shared_lock<std::shared_timed_mutex> lock(interface_mutex); |
| if (!sHearingAidInterface) return JNI_FALSE; |
| |
| jbyte* addr = env->GetByteArrayElements(address, nullptr); |
| if (!addr) { |
| jniThrowIOException(env, EINVAL); |
| return JNI_FALSE; |
| } |
| |
| RawAddress* tmpraw = (RawAddress*)addr; |
| sHearingAidInterface->Connect(*tmpraw); |
| env->ReleaseByteArrayElements(address, addr, 0); |
| return JNI_TRUE; |
| } |
| |
| static jboolean disconnectHearingAidNative(JNIEnv* env, jobject object, |
| jbyteArray address) { |
| LOG(INFO) << __func__; |
| std::shared_lock<std::shared_timed_mutex> lock(interface_mutex); |
| if (!sHearingAidInterface) return JNI_FALSE; |
| |
| jbyte* addr = env->GetByteArrayElements(address, nullptr); |
| if (!addr) { |
| jniThrowIOException(env, EINVAL); |
| return JNI_FALSE; |
| } |
| |
| RawAddress* tmpraw = (RawAddress*)addr; |
| sHearingAidInterface->Disconnect(*tmpraw); |
| env->ReleaseByteArrayElements(address, addr, 0); |
| return JNI_TRUE; |
| } |
| |
| static jboolean addToWhiteListNative(JNIEnv* env, jobject object, |
| jbyteArray address) { |
| std::shared_lock<std::shared_timed_mutex> lock(interface_mutex); |
| if (!sHearingAidInterface) return JNI_FALSE; |
| jbyte* addr = env->GetByteArrayElements(address, nullptr); |
| if (!addr) { |
| jniThrowIOException(env, EINVAL); |
| return JNI_FALSE; |
| } |
| |
| RawAddress* tmpraw = (RawAddress*)addr; |
| sHearingAidInterface->AddToWhiteList(*tmpraw); |
| env->ReleaseByteArrayElements(address, addr, 0); |
| return JNI_TRUE; |
| } |
| |
| static void setVolumeNative(JNIEnv* env, jclass clazz, jint volume) { |
| if (!sHearingAidInterface) { |
| LOG(ERROR) << __func__ |
| << ": Failed to get the Bluetooth Hearing Aid Interface"; |
| return; |
| } |
| sHearingAidInterface->SetVolume(volume); |
| } |
| |
| static JNINativeMethod sMethods[] = { |
| {"classInitNative", "()V", (void*)classInitNative}, |
| {"initNative", "()V", (void*)initNative}, |
| {"cleanupNative", "()V", (void*)cleanupNative}, |
| {"connectHearingAidNative", "([B)Z", (void*)connectHearingAidNative}, |
| {"disconnectHearingAidNative", "([B)Z", (void*)disconnectHearingAidNative}, |
| {"addToWhiteListNative", "([B)Z", (void*)addToWhiteListNative}, |
| {"setVolumeNative", "(I)V", (void*)setVolumeNative}, |
| }; |
| |
| int register_com_android_bluetooth_hearing_aid(JNIEnv* env) { |
| return jniRegisterNativeMethods( |
| env, "com/android/bluetooth/hearingaid/HearingAidNativeInterface", |
| sMethods, NELEM(sMethods)); |
| } |
| } // namespace android |