使用 Java 从麦克风流式传输音频 [英] Streaming audio from microphone with Java
问题描述
我正在开发一个项目,该项目要求我将音频从麦克风从客户端流式传输到服务器.下面显示的代码是我写的.当我同时运行客户端和服务器代码时,音频不会实时流式传输.事实上,来自客户端的音频存储在缓冲区中,当我终止客户端代码的执行时,来自服务器缓冲区的音频输出到扬声器.我究竟做错了什么?(我正在 eclipse 上开发)
I'm developing a project which requires me to stream audio from microphone from a client to a server. The code shown below is what I have written. When I run both the client and server code the audio is not streamed live. In fact the audio from the client is stored in the buffer and when I terminate the execution of the client side code the audio from the buffer on the server gets output to the speaker. What am I doing wrong? (I'm developing on eclipse)
服务器:
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.TargetDataLine;
//import org.apache.commons.io.output.ByteArrayOutputStream;
public class ServerStream {
private OutgoingSoudnListener osl = new OutgoingSoudnListener();
boolean outVoice = true;
AudioFormat format = getAudioFormat();
private ServerSocket serverSocket;
Socket server;
private AudioFormat getAudioFormat() {
float sampleRate = 16000.0F;
int sampleSizeBits = 16;
int channels = 1;
boolean signed = true;
boolean bigEndian = false;
return new AudioFormat(sampleRate, sampleSizeBits, channels, signed, bigEndian);
}
public ServerStream() throws IOException{
try{
System.out.println("Creating Socket...");
serverSocket = new ServerSocket(3000);
osl.runSender();
}catch(Exception e){
e.printStackTrace();
}
}
class OutgoingSoudnListener{
public void runSender(){
try{
server = serverSocket.accept();
System.out.println("Listening from mic.");
DataOutputStream out = new DataOutputStream(server.getOutputStream());
DataLine.Info micInfo = new DataLine.Info(TargetDataLine.class,format);
TargetDataLine mic = (TargetDataLine) AudioSystem.getLine(micInfo);
mic.open(format);
System.out.println("Mic open.");
byte tmpBuff[] = new byte[mic.getBufferSize()/5];
mic.start();
while(outVoice) {
System.out.println("Reading from mic.");
int count = mic.read(tmpBuff,0,tmpBuff.length);
if (count > 0){
System.out.println("Writing buffer to server.");
out.write(tmpBuff, 0, count);
}
}
mic.drain();
mic.close();
System.out.println("Stopped listening from mic.");
}catch(Exception e){
e.printStackTrace();
}
}
}
public static void main (String args[]) throws IOException{
new ServerStream();
}
}
客户:
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;
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 org.apache.commons.io.IOUtils;
public class ClientStream{
public ClientStream() throws IOException{
isl.runListener();
}
private IncomingSoundListener isl = new IncomingSoundListener();
AudioFormat format = getAudioFormat();
InputStream is;
Socket client;
String serverName = "192.168.2.8";
int port=3000;
boolean inVoice = true;
private AudioFormat getAudioFormat(){
float sampleRate = 16000.0F;
int sampleSizeBits = 16;
int channels = 1;
boolean signed = true;
boolean bigEndian = false;
return new AudioFormat(sampleRate, sampleSizeBits, channels, signed, bigEndian);
}
class IncomingSoundListener {
public void runListener(){
try{
System.out.println("Connecting to server:"+serverName+" Port:"+port);
client = new Socket(serverName,port);
System.out.println("Connected to: "+client.getRemoteSocketAddress());
System.out.println("Listening for incoming audio.");
DataLine.Info speakerInfo = new DataLine.Info(SourceDataLine.class,format);
SourceDataLine speaker = (SourceDataLine) AudioSystem.getLine(speakerInfo);
speaker.open(format);
speaker.start();
while(inVoice){
is = client.getInputStream();
byte[] data = IOUtils.toByteArray(is);
ByteArrayInputStream bais = new ByteArrayInputStream(data);
AudioInputStream ais = new AudioInputStream(bais,format,data.length);
int bytesRead = 0;
if((bytesRead = ais.read(data)) != -1){
System.out.println("Writing to audio output.");
speaker.write(data,0,bytesRead);
// bais.reset();
}
ais.close();
bais.close();
}
speaker.drain();
speaker.close();
System.out.println("Stopped listening to incoming audio.");
}catch(Exception e){
e.printStackTrace();
}
}
}
public static void main(String [] args) throws IOException{
new ClientStream();
}
}
推荐答案
问题出在客户端,在行中
The problem is in client side, in the line
byte[] data = IOUtils.toByteArray(is);
它处理的是对象本身,而不是内容.所以,你必须把它改成这样:
It deals with the object itself, not with the content. So, you must change it to this:
byte[] data = new byte[1024];
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