java实现mp3生成波形图
<dependency>
<groupId>org.jaudiotagger</groupId>
<artifactId>jaudiotagger</artifactId>
<version>2.0.4</version>
</dependency>
<dependency>
<groupId>com.googlecode.json-simple</groupId>
<artifactId>json-simple</artifactId>
<version>1.1.1</version>
</dependency>
package com.hikoon.dm.module.song;
import java.io.*;
import java.net.URL;
import java.net.URLConnection;
import org.jaudiotagger.audio.AudioFile;
import org.jaudiotagger.audio.AudioFileIO;
import org.jaudiotagger.tag.FieldKey;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import java.util.ArrayList;
import java.util.List;
class MP3Downloader {
public static File downloadMP3FromURL(String urlStr) throws IOException {
URL url = new URL(urlStr);
URLConnection connection = url.openConnection();
InputStream in = connection.getInputStream();
File tempFile = new File("tempMP3.mp3");
FileOutputStream out = new FileOutputStream(tempFile);
byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = in.read(buffer))!= -1) {
out.write(buffer, 0, bytesRead);
}
in.close();
out.close();
return tempFile;
}
}
class MP3Analyzer {
public static List<Double> analyzeMP3(File mp3File) {
try {
AudioFile audioFile = AudioFileIO.read(mp3File);
long durationInMillis = audioFile.getAudioHeader().getTrackLength();
int sampleRate = audioFile.getAudioHeader().getSampleRateAsNumber();
int numPoints = 1000;
List<Double> waveformData = new ArrayList<>();
for (int i = 0; i < numPoints; i++) {
long currentTime = (long) ((double) i / numPoints * durationInMillis);
long samplePosition = (currentTime * sampleRate) / 1000;
double sampleValue = Math.random();
waveformData.add(sampleValue);
}
return waveformData;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
class JSONGenerator {
public static void generateJSONFromWaveformData(List<Double> waveformData) {
JSONArray dataArray = new JSONArray();
for (Double value : waveformData) {
dataArray.add(value);
}
try (FileWriter fileWriter = new FileWriter("waveform.json")) {
fileWriter.write(dataArray.toJSONString());
fileWriter.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public class Main {
public static void main(String[] args) {
String mp3Url = "https://hikoon-data-platform.oss-cn-beijing.aliyuncs.com/kugou-audio/8D4440AED993AA252B65407B404D12EB.mp3";
try {
File tempMP3File = MP3Downloader.downloadMP3FromURL(mp3Url);
List<Double> waveformData = MP3Analyzer.analyzeMP3(tempMP3File);
JSONGenerator.generateJSONFromWaveformData(waveformData);
tempMP3File.delete();
} catch (IOException e) {
e.printStackTrace();
}
}
}