Eric Laurent | 4bcdba8 | 2015-05-01 11:37:49 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | //#define LOG_NDEBUG 0 |
| 18 | |
| 19 | #define LOG_TAG "AudioDeviceCallback-JNI" |
| 20 | |
| 21 | #include <utils/Log.h> |
| 22 | #include <JNIHelp.h> |
| 23 | #include <JniConstants.h> |
| 24 | #include "core_jni_helpers.h" |
| 25 | #include <media/AudioSystem.h> |
| 26 | |
| 27 | #include "android_media_DeviceCallback.h" |
| 28 | |
| 29 | |
| 30 | // ---------------------------------------------------------------------------- |
| 31 | |
| 32 | using namespace android; |
| 33 | |
| 34 | JNIDeviceCallback::JNIDeviceCallback(JNIEnv* env, jobject thiz, jobject weak_thiz, |
| 35 | jmethodID postEventFromNative) |
| 36 | { |
| 37 | |
| 38 | // Hold onto the AudioTrack/AudioRecord class for use in calling the static method |
| 39 | // that posts events to the application thread. |
| 40 | jclass clazz = env->GetObjectClass(thiz); |
| 41 | if (clazz == NULL) { |
| 42 | return; |
| 43 | } |
| 44 | mClass = (jclass)env->NewGlobalRef(clazz); |
| 45 | |
| 46 | // We use a weak reference so the AudioTrack/AudioRecord object can be garbage collected. |
| 47 | // The reference is only used as a proxy for callbacks. |
| 48 | mObject = env->NewGlobalRef(weak_thiz); |
| 49 | |
| 50 | mPostEventFromNative = postEventFromNative; |
| 51 | } |
| 52 | |
| 53 | JNIDeviceCallback::~JNIDeviceCallback() |
| 54 | { |
| 55 | // remove global references |
| 56 | JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| 57 | if (env == NULL) { |
| 58 | return; |
| 59 | } |
| 60 | env->DeleteGlobalRef(mObject); |
| 61 | env->DeleteGlobalRef(mClass); |
| 62 | } |
| 63 | |
| 64 | void JNIDeviceCallback::onAudioDeviceUpdate(audio_io_handle_t audioIo, |
| 65 | audio_port_handle_t deviceId) |
| 66 | { |
| 67 | JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| 68 | if (env == NULL) { |
| 69 | return; |
| 70 | } |
| 71 | |
| 72 | ALOGV("%s audioIo %d deviceId %d", __FUNCTION__, audioIo, deviceId); |
| 73 | env->CallStaticVoidMethod(mClass, |
| 74 | mPostEventFromNative, |
| 75 | mObject, |
| 76 | AUDIO_NATIVE_EVENT_ROUTING_CHANGE, deviceId, 0, NULL); |
| 77 | if (env->ExceptionCheck()) { |
| 78 | ALOGW("An exception occurred while notifying an event."); |
| 79 | env->ExceptionClear(); |
| 80 | } |
| 81 | } |
| 82 | |