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FFmpegAndroid/app/src/main/java/com/frank/ffmpeg/AudioPlayer.java

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package com.frank.ffmpeg;
import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioTrack;
/**
* AudioPlayer: use AudioTrack and OpenSL ES to play audio
* Created by frank on 2018/2/1.
*/
public class AudioPlayer {
static {
System.loadLibrary("media-handle");
}
//using AudioTrack to play
public native void play(String audioPath);
//using OpenSL ES to play
public native void playAudio(String audioPath);
public native void stop();
/**
* Create an AudioTrack instance for JNI calling
*
* @param sampleRate sampleRate
* @param channels channel layout
* @return AudioTrack
*/
public AudioTrack createAudioTrack(int sampleRate, int channels) {
int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
int channelConfig;
if (channels == 1) {
channelConfig = AudioFormat.CHANNEL_OUT_MONO;
} else if (channels == 2) {
channelConfig = AudioFormat.CHANNEL_OUT_STEREO;
} else {
channelConfig = AudioFormat.CHANNEL_OUT_STEREO;
}
int bufferSizeInBytes = AudioTrack.getMinBufferSize(sampleRate, channelConfig, audioFormat);
return new AudioTrack(AudioManager.STREAM_MUSIC, sampleRate, channelConfig, audioFormat,
bufferSizeInBytes, AudioTrack.MODE_STREAM);
}
}