java 简易wav音频文件播放器


测试文件

 
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源码

import java.io.FileInputStream;

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.SourceDataLine;

/**
* 简易wave音频文件播放器
* @author 作者 luhua
* @version 创建时间：2021年5月14日 下午3:20:11
*/
public class WavePlayer {


public static void main(String[] args) throws Exception {
String path = "F:\\testFile\\audio\\b.wav";
if(null != args && args.length > 0) {
path = args[0];
    }
FileInputStream fis = new FileInputStream(path);
/**解析wav头*/
WavHeard pasrWaveHeard = pasrWaveHeard(fis);
if(null != pasrWaveHeard) {
System.out.println(pasrWaveHeard);
AudioFormat.Encoding encoding =  new AudioFormat.Encoding("PCM_SIGNED");
//编码格式，采样率，每个样本的位数，声道，帧长（字节），帧数，是否按big-endian字节顺序存储
AudioFormat format = new AudioFormat(encoding,pasrWaveHeard.sampleRate, pasrWaveHeard.formatSize, 
pasrWaveHeard.numChannels, pasrWaveHeard.blockAlign, pasrWaveHeard.sampleRate ,false);
SourceDataLine auline = null;
DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
System.out.println(format);
auline = (SourceDataLine) AudioSystem.getLine(info);
auline.open(format);
auline.start();
byte[] b = new byte[pasrWaveHeard.bytesPerSecond];
int len = 0;
while((len = fis.read(b))>0) {
auline.write(b, 0, len);
      }
auline.close();
    }
  }


public static WavHeard pasrWaveHeard(FileInputStream fis) throws Exception{
WavHeard wavHeard = new WavHeard();
byte[] b = new byte[4];
/**RIFF部分*/
fis.read(wavHeard.riffType);
if(!"RIFF".equalsIgnoreCase(new String(wavHeard.riffType))) {
System.out.println("This is not a valid wav(RIFF) file.");
return null;
    }
/**riffSize*/
fis.read(b);
wavHeard.riffSize = (b[3]&0xff)<<24|(b[2]&0xff)<<16|(b[1]&0xff)<<8|(b[0]&0xff);
/**wave*/
fis.read(wavHeard.waveType);

/**FMT */
fis.read(wavHeard.formatType);
if(!"FMT ".equalsIgnoreCase(new String(wavHeard.formatType))) {
System.out.println("This is not a valid wav(FMT) file.");
return null;
    }

/**表示该区块数据的长度（不包含FMT 和fSize的长度）*/
fis.read(b);
wavHeard.formatSize = (b[3]&0xff)<<24 | (b[2]&0xff)<<16 | (b[1]&0xff)<<8 | (b[0]&0xff);

/**PCM音频数据的值为1*/
b = new byte[2];
fis.read(b);
wavHeard.compressionCode = (short) ((b[1]&0xff)<<8 | (b[0]&0xff));

/**音频数据的声道数，1：单声道，2：双声道*/
fis.read(b);
wavHeard.numChannels = (short) ((b[1]&0xff)<<8 | (b[0]&0xff));

/**采样率*/
b = new byte[4];
fis.read(b);
wavHeard.sampleRate = (b[3]&0xff) <<24 | (b[2]&0xff)<<16 | (b[1]&0xff)<<8 | (b[0]&0xff);

/**每秒数据字节数*/
fis.read(b);
wavHeard.bytesPerSecond = (b[3]&0xff) <<24 | (b[2]&0xff)<<16 | (b[1]&0xff)<<8 | (b[0]&0xff);

/**每个采样所需字节数*/
b = new byte[2];
fis.read(b);
wavHeard.blockAlign = (short) ((b[1]&0xff)<<8 | (b[0]&0xff));

/**每个采样存储的bit数*/
fis.read(b);
wavHeard.bitsPerSample = (short) ((b[1]&0xff)<<8 | (b[0]&0xff));

/**data*/
fis.read(wavHeard.dataType);

/**dataSize*/
b = new byte[4];
fis.read(b);
wavHeard.dataSize = (b[3]&0xff) <<24 | (b[2]&0xff)<<16 | (b[1]&0xff)<<8 | (b[0]&0xff);
return wavHeard;
  }

}

class WavHeard{  
public byte[] riffType = new byte[4];     //4byte,资源交换文件标志:RIFF     
public int    riffSize;               //4byte,从下个地址到文件结尾的总字节数   
public byte[]   waveType = new byte[4];   //4byte,wav文件标志:WAVE      
public byte[]   formatType = new byte[4];   //4byte,波形文件标志:FMT(最后一位空格符)   
public int    formatSize;             //4byte,音频属性(compressionCode,numChannels,sampleRate,bytesPerSecond,blockAlign,bitsPerSample)所占字节数  
public short  compressionCode;        //2byte,格式种类(1-线性pcm-WAVE_FORMAT_PCM,WAVEFORMAT_ADPCM)  
public short  numChannels;            //2byte,通道数  
public int    sampleRate;             //4byte,采样率  
public int    bytesPerSecond;         //4byte,传输速率  
public short  blockAlign;             //2byte,数据块的对齐，即DATA数据块长度  
public short  bitsPerSample;          //2byte,采样精度-PCM位宽  
public byte[]   dataType = new byte[4];     //4byte,数据标志:data  
public int    dataSize;               //4byte,从下个地址到文件结尾的总字节数，即除了wav header以外的pcm data length  


@Override
public String toString() {
return "------------------RIFF------------------\n"+ 
"\n riffType\t:"+new String(riffType)+
"\n riffSize\t:"+riffSize+
"\n waveType\t:"+new String(waveType)+
"\n\n------------------FORMAT----------------\n"+
"\n formatType\t:"+ new String(formatType) +
"\n formatSize\t:"+ formatSize +
"\n compressionCode:"+ compressionCode +
"\n numChannels\t:" + numChannels +
"\n sampleRate\t:" + sampleRate +
"\n bytesPerSecond\t:" + bytesPerSecond +
"\n blockAlign\t:" + blockAlign +
"\n bitsPerSample\t:" + bitsPerSample +
"\n dataType\t:" + new String(dataType) +
"\n dataSize\t:" + dataSize + 
"\n\n-----------------------------------------";
  }

}

相关资料

​​wav音频文件解析​​

​​java播放pcm音频文件​​