您好,登錄后才能下訂單哦!
如何使用Java合成wav文件?針對這個問題,這篇文章詳細介紹了相對應的分析和解答,希望可以幫助更多想解決這個問題的小伙伴找到更簡單易行的方法。
package com.cmos.nomsapp.utils.wavmeger; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.RandomAccessFile; import java.nio.ByteBuffer; import java.nio.ByteOrder; import java.util.ArrayList; import java.util.List; public class WavMergeUtil { /** * meger多個wav * @param inputs 多個wav * @param output 要生成的wav * @throws IOException */ public static void mergeWav(File[] inputs, String output) throws IOException { if (inputs.length < 1) { return; } try(FileInputStream fis = new FileInputStream(inputs[0]); FileOutputStream fos = new FileOutputStream(new File(output))){ byte[] buffer = new byte[1024 * 4]; int total = 0; int count; while ((count = fis.read(buffer)) > -1) { fos.write(buffer, 0, count); total += count; } fis.close(); for (int i = 1; i < inputs.length; i++) { File file = inputs[i]; try(FileInputStream fisH = new FileInputStream(file)){ Header header = resolveHeader(fisH); FileInputStream dataInputStream = header.dataInputStream; while ((count = dataInputStream.read(buffer)) > -1) { fos.write(buffer, 0, count); total += count; } } } fos.flush(); fos.close(); FileInputStream fisHo = new FileInputStream(new File(output)); Header outputHeader = resolveHeader(fisHo); outputHeader.dataInputStream.close(); try(RandomAccessFile res = new RandomAccessFile(output, "rw")){ res.seek(4); byte[] fileLen = intToByteArray(total + outputHeader.dataOffset - 8); res.write(fileLen, 0, 4); res.seek(outputHeader.dataSizeOffset); byte[] dataLen = intToByteArray(total); res.write(dataLen, 0, 4); } } } /** * 解析頭部,并獲得文件指針指向數據開始位置的InputStreram,記得使用后需要關閉 */ private static Header resolveHeader(FileInputStream fis) throws IOException { byte[] byte4 = new byte[4]; byte[] buffer = new byte[2048]; int readCount = 0; Header header = new Header(); fis.read(byte4);// RIFF fis.read(byte4); readCount += 8; header.fileSizeOffset = 4; header.fileSize = byteArrayToInt(byte4); fis.read(byte4);// WAVE fis.read(byte4);// fmt fis.read(byte4); readCount += 12; int fmtLen = byteArrayToInt(byte4); fis.read(buffer, 0, fmtLen); readCount += fmtLen; fis.read(byte4);// data or fact readCount += 4; if (isFmt(byte4, 0)) {// 包含fmt段 fis.read(byte4); int factLen = byteArrayToInt(byte4); fis.read(buffer, 0, factLen); fis.read(byte4);// data readCount += 8 + factLen; } fis.read(byte4);// data size int dataLen = byteArrayToInt(byte4); header.dataSize = dataLen; header.dataSizeOffset = readCount; readCount += 4; header.dataOffset = readCount; header.dataInputStream = fis; return header; } private static boolean isRiff(byte[] bytes, int start) { if (bytes[start + 0] == 'R' && bytes[start + 1] == 'I' && bytes[start + 2] == 'F' && bytes[start + 3] == 'F') { return true; } else { return false; } } private static boolean isFmt(byte[] bytes, int start) { if (bytes[start + 0] == 'f' && bytes[start + 1] == 'm' && bytes[start + 2] == 't' && bytes[start + 3] == ' ') { return true; } else { return false; } } private static boolean isData(byte[] bytes, int start) { if (bytes[start + 0] == 'd' && bytes[start + 1] == 'a' && bytes[start + 2] == 't' && bytes[start + 3] == 'a') { return true; } else { return false; } } /** * 將int轉化為byte[] */ private static byte[] intToByteArray(int data) { return ByteBuffer.allocate(4).order(ByteOrder.LITTLE_ENDIAN).putInt(data).array(); } /** * 將short轉化為byte[] */ private static byte[] shortToByteArray(short data) { return ByteBuffer.allocate(2).order(ByteOrder.LITTLE_ENDIAN).putShort(data).array(); } /** * 將byte[]轉化為short */ private static short byteArrayToShort(byte[] b) { return ByteBuffer.wrap(b).order(ByteOrder.LITTLE_ENDIAN).getShort(); } /** * 將byte[]轉化為int */ private static int byteArrayToInt(byte[] b) { return ByteBuffer.wrap(b).order(ByteOrder.LITTLE_ENDIAN).getInt(); } /** * 頭部部分信息 */ static class Header { public int fileSize; public int fileSizeOffset; public int dataSize; public int dataSizeOffset; public int dataOffset; public FileInputStream dataInputStream; } }
關于如何使用Java合成wav文件問題的解答就分享到這里了,希望以上內容可以對大家有一定的幫助,如果你還有很多疑惑沒有解開,可以關注億速云行業資訊頻道了解更多相關知識。
免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。