package com.esa.audio;
import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioRecord;
import android.media.AudioTrack;
import android.media.MediaRecorder;
public class Audio {
public static final int AUDIO_SOURCE = MediaRecorder.AudioSource.MIC;
public static final int STREAM_TYPE = AudioManager.STREAM_MUSIC;
public static final int SAMPLE_RATE_IN_HZ = 8000;// 44100
public static final int CHANNEL_CONFIG = AudioFormat.CHANNEL_CONFIGURATION_MONO;// AudioTrack和AudioRecord都能用
public static final int RECORD_CHANNEL_CONFIG = AudioFormat.CHANNEL_IN_MONO;
public static final int TRACK_CHANNEL_CONFIG = AudioFormat.CHANNEL_OUT_MONO;
public static final int AUDIO_FORMAT = AudioFormat.ENCODING_PCM_16BIT;
public static final int TRACK_BUFFER_SIZE_IN_BYTES = AudioTrack.getMinBufferSize(SAMPLE_RATE_IN_HZ, TRACK_CHANNEL_CONFIG, AUDIO_FORMAT);
public static final int RECORD_BUFFER_SIZE_IN_BYTES = AudioRecord.getMinBufferSize(SAMPLE_RATE_IN_HZ, RECORD_CHANNEL_CONFIG, AUDIO_FORMAT);;
public static final int MODE = AudioTrack.MODE_STREAM;
private static Audio audio;
private AudioTrack track = null;
private AudioRecord record = null;
public static Audio getAudio() {
if (audio == null) {
audio = new Audio();
}
return audio;
}
public AudioTrack getTrack() {
if (track == null) {
track = new AudioTrack(STREAM_TYPE, SAMPLE_RATE_IN_HZ, TRACK_CHANNEL_CONFIG, AUDIO_FORMAT, TRACK_BUFFER_SIZE_IN_BYTES, MODE);
}
return track;
}
public AudioRecord getRecord() {
if (record == null) {
record = new AudioRecord(AUDIO_SOURCE, SAMPLE_RATE_IN_HZ, RECORD_CHANNEL_CONFIG, AUDIO_FORMAT, RECORD_BUFFER_SIZE_IN_BYTES);
}
return record;
}
public void releaseRecord() {
if (record != null) {
record.stop();
record.release();
}
record = null;
}
public void releaseTrack() {
if (track != null) {
track.stop();
track.release();
}
track = null;
}
}
来源:oschina
链接:https://my.oschina.net/u/198910/blog/160303