1 /*
2  * Copyright 2021 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 package org.hyphonate.megaaudio.player.sources;
17 
18 import org.hyphonate.megaaudio.player.AudioSource;
19 
20 public class SilenceAudioSource extends AudioSource {
21     /**
22      * Fills the specified buffer with zeros (silence).
23      *
24      * @param buffer The buffer to be filled.
25      * @param numFrames The number of frames of audio to provide.
26      * @param numChans The number of channels (in the buffer) required by the player.
27      * @return  The number of samples generated. Since we are generating a continuous periodic
28      * signal, this will always be <code>numFrames</code>.
29      */
30     @Override
pull(float[] buffer, int numFrames, int numChans)31     public int pull(float[] buffer, int numFrames, int numChans) {
32         java.util.Arrays.fill(buffer, 0);
33 
34         return numFrames;
35     }
36 }
37