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#ifndef ANDROID_MEDIA_DEVICE_CALLBACK_H
18#define ANDROID_MEDIA_DEVICE_CALLBACK_H
19
20#include <system/audio.h>
21#include <media/AudioSystem.h>
22
23namespace android {
24
25// keep in sync with AudioSystem.java
26#define AUDIO_NATIVE_EVENT_ROUTING_CHANGE      1000
27
28class JNIDeviceCallback: public AudioSystem::AudioDeviceCallback
29{
30public:
31    JNIDeviceCallback(JNIEnv* env, jobject thiz, jobject weak_thiz, jmethodID postEventFromNative);
32    ~JNIDeviceCallback();
33
34    virtual void onAudioDeviceUpdate(audio_io_handle_t audioIo,
35                                     audio_port_handle_t deviceId);
36
37private:
38    void sendEvent(int event);
39
40    jclass      mClass;     // Reference to AudioTrack/AudioRecord class
41    jobject     mObject;    // Weak ref to AudioTrack/AudioRecord Java object to call on
42    jmethodID   mPostEventFromNative; // postEventFromNative method ID.
43};
44
45}; // namespace android
46
47#endif // ANDROID_MEDIA_DEVICE_CALLBACK_H
48