| /* |
| * Copyright (C) 2015 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_NDEBUG 0 |
| |
| #define LOG_TAG "AudioDeviceCallback-JNI" |
| |
| #include <utils/Log.h> |
| #include <nativehelper/JNIHelp.h> |
| #include "core_jni_helpers.h" |
| #include <media/AudioSystem.h> |
| |
| #include "android_media_DeviceCallback.h" |
| |
| |
| // ---------------------------------------------------------------------------- |
| |
| using namespace android; |
| |
| JNIDeviceCallback::JNIDeviceCallback(JNIEnv* env, jobject thiz, jobject weak_thiz, |
| jmethodID postEventFromNative) |
| { |
| |
| // Hold onto the AudioTrack/AudioRecord class for use in calling the static method |
| // that posts events to the application thread. |
| jclass clazz = env->GetObjectClass(thiz); |
| if (clazz == NULL) { |
| return; |
| } |
| mClass = (jclass)env->NewGlobalRef(clazz); |
| |
| // We use a weak reference so the AudioTrack/AudioRecord object can be garbage collected. |
| // The reference is only used as a proxy for callbacks. |
| mObject = env->NewGlobalRef(weak_thiz); |
| |
| mPostEventFromNative = postEventFromNative; |
| } |
| |
| JNIDeviceCallback::~JNIDeviceCallback() |
| { |
| // remove global references |
| JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| if (env == NULL) { |
| return; |
| } |
| env->DeleteGlobalRef(mObject); |
| env->DeleteGlobalRef(mClass); |
| } |
| |
| void JNIDeviceCallback::onAudioDeviceUpdate(audio_io_handle_t audioIo, |
| audio_port_handle_t deviceId) |
| { |
| JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| if (env == NULL) { |
| return; |
| } |
| |
| ALOGV("%s audioIo %d deviceId %d", __FUNCTION__, audioIo, deviceId); |
| env->CallStaticVoidMethod(mClass, |
| mPostEventFromNative, |
| mObject, |
| AUDIO_NATIVE_EVENT_ROUTING_CHANGE, deviceId, 0, NULL); |
| if (env->ExceptionCheck()) { |
| ALOGW("An exception occurred while notifying an event."); |
| env->ExceptionClear(); |
| } |
| } |
| |