Java 使用字节数组创建音频输入流
我仍在进行用JAVA创建混合控制台的小项目,我遇到了一个新的障碍。 我正在尝试从byteArray创建一个音频输入流,然后,阅读它来听到声音。但我的密码有点错误:我什么也没听到 这是我的密码:Java 使用字节数组创建音频输入流,java,arrays,java-io,javasound,Java,Arrays,Java Io,Javasound,我仍在进行用JAVA创建混合控制台的小项目,我遇到了一个新的障碍。 我正在尝试从byteArray创建一个音频输入流,然后,阅读它来听到声音。但我的密码有点错误:我什么也没听到 这是我的密码: import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.OutputStream; import javax.sound.sampled.
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.OutputStream;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.SourceDataLine;
import javax.sound.sampled.TargetDataLine;
public class SoudTest {
private SourceDataLine sLine;
private AudioFormat audioFormat;
private AudioInputStream audioInputStream;
private AudioInputStream audioInputStream2;
private ByteArrayOutputStream byteArrayOutputStream= new ByteArrayOutputStream();;
private File file = new File ("test.wav");
private File file2 = new File ("test2.wav");
SoudTest () {
/*
* The aim of this code is to test the possibility or creating a mixing console in JAVA like the physical mixing consoles
* First step : Create an inputstream from a file, a microphone or anything else
* This is like plugging a source to a line-in of a stripe of a mixing console
* Second : Reading this input stream and create a byte array
* This byte array will be sent to the "master output" of the mixing console
* Question to answer later : how to create a byte array that will act like a buffer for the next steps...
* Third : Using this byte array to create an audioInputStream
* This step is like having the "master volume" getting what is sent by the stripe.
* Fourth : reading this audioInputStream
* The sound should flow out to the speaker
*/
//1st step
try {
audioInputStream=AudioSystem.getAudioInputStream(file);
} catch (Exception e) {
e.printStackTrace();
}
AudioFileFormat.Type targetType = AudioFileFormat.Type.WAVE;
//2nd step
try {
AudioSystem.write(audioInputStream, targetType, byteArrayOutputStream);
} catch (Exception e) {
e.printStackTrace();
} finally {
System.out.println("Finally...");
//tLine.close();
System.out.println("Line closed");
try {
audioInputStream.close();
System.out.println("Stream closed.");
} catch (Exception e) {
e.printStackTrace();
}
}
/////////////////////////////////////////////////////////////
//3rd step
System.out.println("Size of the outputStream : "+byteArrayOutputStream.size());
byte[] byteArray = byteArrayOutputStream.toByteArray();
System.out.println("Size of byte array : "+byteArray.length);
ByteArrayInputStream bis = new ByteArrayInputStream(byteArray);
audioFormat = new AudioFormat(44100, 16, 2, true, false);
audioInputStream2=new AudioInputStream(bis, audioFormat, 1024);
DataLine.Info info = new DataLine.Info(SourceDataLine.class, audioFormat);
try {
//System.out.println(info);
sLine=(SourceDataLine) AudioSystem.getLine(info);
System.out.println(sLine.getLineInfo());
} catch (Exception e) {
e.printStackTrace();
}
try {
sLine.open(audioFormat);
} catch (Exception e){
e.printStackTrace();
}
sLine.start();
System.out.println("Line Started");
//4th step
try {
byte bytes[] = new byte[1024];
int bytesRead=0;
int loop=0;
while ((bytesRead=audioInputStream2.read(bytes, 0, bytes.length))!= -1) {
//getVolumeLevel(bytes);
try {
sLine.write(bytes, 0, bytesRead);
System.out.println(loop);
} catch (Exception e) {
e.printStackTrace();
}
loop+=1;
}
System.out.println("No bytes anymore !");
} catch (Exception e) {
e.printStackTrace();
}
System.out.println("Line stopped");
}
}
以下是我的控制台中的输出:
最后。。。
线路关闭
小溪关闭了
输出流的大小:35527724
字节数组大小:35527724
接口源数据线支持PCM_签名未知采样率、16位、立体声、4字节/帧、小尾端和0到1000000字节的缓冲区格式
开始排队
0
1.
2.
三,
不再有字节了!
停线
我的原始文件的大小为35.5 Mo,字节数组的长度为35.527.727,因此看起来是可能的。然后,我的“块”数组的大小是1024,所以我预计大约有37700个循环。那么为什么我的“循环计数”停在“3”
我希望我的代码是明确的enouth的评论。谢谢你的帮助;-) 好吧,我想:我很愚蠢。当我创建audioInputStream2时,我没有对最后一个参数进行足够的处理 而不是:
audioInputStream2=新的AudioInputStream(bis,audioFormat,1024)代码>
我应该写:audioInputStream2=新的AudioInputStream(bis,audioFormat,byteArray.length)代码>