1 /*
2  * Copyright (C) 2020 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_AUDIO_TRACK_CALLBACK_H
18 #define ANDROID_MEDIA_AUDIO_TRACK_CALLBACK_H
19 
20 #include <android/media/BnAudioTrackCallback.h>
21 
22 namespace android {
23 
24 #define AUDIO_NATIVE_EVENT_CODEC_FORMAT_CHANGE 100
25 
26 // TODO(b/149870866) : Extract common part for JNIAudioTrackCallback and JNIDeviceCallback
27 class JNIAudioTrackCallback : public media::BnAudioTrackCallback {
28 public:
29     JNIAudioTrackCallback(JNIEnv* env, jobject thiz, jobject weak_thiz,
30                           jmethodID postEventFromNative);
31     ~JNIAudioTrackCallback() override;
32 
33     binder::Status onCodecFormatChanged(const std::vector<uint8_t>& audioMetadata) override;
34 
35 private:
36     jclass mClass;                   // Reference to AudioTrack class
37     jobject mObject;                 // Weak ref to AudioTrack Java object to call on
38     jmethodID mPostEventFromNative;  // postEventFromNative method ID
39     jclass mByteBufferClass;         // Reference to ByteBuffer class
40     jmethodID mAllocateDirectMethod; // ByteBuffer.allocateDirect method ID
41 };
42 
43 }; // namespace android
44 
45 #endif // ANDROID_MEDIA_AUDIO_TRACK_CALLBACK_H
46