我有一个用ADPCM(id = 2),单声道,每个样本4位和一个“事实”块编码的WAV文件。很多东西都不会出现在“普通”波形中。
解析格式代码(此处2 == ADPCM)时,AudioInputStream的AudioFileReader类已经失败,它仅接受1,3,6和7。
还有另一种播放此类文件的方法吗?由于标准Java显然无法做到这一点。
答案 0 :(得分:0)
对于Windows(32/64)和macOS(64),可以使用FFSampledSP,v0.9.29或更高版本。您可以通过以下Maven依赖项来获取它:
<dependency>
<groupId>com.tagtraum</groupId>
<artifactId>ffsampledsp-complete</artifactId>
<version>0.9.29</version>
</dependency>
或通过此下载link。
一旦.jar
在类路径中,以下代码应该起作用:
import javax.sound.sampled.*;
import java.io.File;
import java.io.IOException;
public class PlayADPCM {
public static void main(final String[] args) throws IOException, UnsupportedAudioFileException, LineUnavailableException {
final File file = new File("your_adpcm_file.wav");
final AudioInputStream stream = AudioSystem.getAudioInputStream(file);
final AudioFormat format = stream.getFormat();
System.out.println("Source format: " + format);
final AudioFormat targetFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED,
format.getSampleRate(), 16, format.getChannels(),
format.getChannels()*2,
format.getSampleRate(), format.isBigEndian());
System.out.println("Target format: " + targetFormat);
// convert source to target format
final AudioInputStream playableStream = AudioSystem.getAudioInputStream(targetFormat, stream);
// get a line and play it.
final DataLine.Info lineInfo = new DataLine.Info(SourceDataLine.class, targetFormat);
final SourceDataLine line = (SourceDataLine)AudioSystem.getLine(lineInfo);
line.open(targetFormat);
line.start();
final byte[] buf = new byte[1024*8];
int justRead;
while ((justRead = playableStream.read(buf))>0) {
line.write(buf, 0, justRead);
}
playableStream.close();
line.drain();
line.close();
}
}