1 /*
2  * Copyright (C) 2016 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 PERIODICAUDIOSOURCE_H_
18 #define PERIODICAUDIOSOURCE_H_
19 
20 #include "AudioSource.h"
21 
22 namespace ndkaudio {
23 
24 class PeriodicAudioSource : public AudioSource {
25  public:
26     PeriodicAudioSource(int numChannels);
27 
setAudioFrequency(float freq)28     void setAudioFrequency(float freq) {
29         targetFreq_ = freq;
30     }
31 
32     float calcCurrentFreq(long time);
33 
34  protected:
35     float targetFreq_;
36 };
37 
38 } // namespace ndkaudio
39 
40 #endif /* PERIODICAUDIOSOURCE_H_ */
41