Java 混合波文件
我不能混合两个音频扩展文件wav。我的工作:Java 混合波文件,java,android,audio,wave,Java,Android,Audio,Wave,我不能混合两个音频扩展文件wav。我的工作: byte[] bufData1 = null; byte[] bufData2 = null; ArrayList<Byte> bufData3 = new ArrayList<Byte>(); 混合原始音频数据字节 public void bootloadInputData(String p1, String p2) throws IOException { bufData1 = bootloadRead
byte[] bufData1 = null;
byte[] bufData2 = null;
ArrayList<Byte> bufData3 = new ArrayList<Byte>();
混合原始音频数据字节
public void bootloadInputData(String p1, String p2) throws IOException {
bufData1 = bootloadReadFileByte(p1);
bufData2 = bootloadReadFileByte(p2);
System.arraycopy(bufData1, 44, bufData1, 0, (bufData1.length - 44));
System.arraycopy(bufData2, 44, bufData2, 0, (bufData2.length - 44));
}
public byte[] bootloadReadFileByte(String path) throws IOException{
ByteArrayOutputStream out = null;
InputStream input = null;
try{
out = new ByteArrayOutputStream();
input = new BufferedInputStream(new FileInputStream(path));
int data = 0;
while((data = input.read()) != -1){
out.write(data);
}
}
finally{
if(null != input){
input.close();
}
if(null != out){
out.close();
}
}
return out.toByteArray();
}
public void bootloadOutputData() throws IOException {
for(int i = 0; i < ((bufData1.length + bufData2.length) / 4); i += 4) {
if(i < bufData1.length){
bufData3.add(bufData1[i]);
bufData3.add(bufData1[i+1]);
bufData3.add(bufData1[i+2]);
bufData3.add(bufData1[i+3]);
}
if(i < bufData2.length){
bufData3.add(bufData2[i]);
bufData3.add(bufData2[i+1]);
bufData3.add(bufData2[i+2]);
bufData3.add(bufData2[i+3]);
}
}
}
public void bootloadOutputData()引发IOException{
对于(int i=0;i<((bufData1.length+bufData2.length)/4);i+=4){
如果(i
创建新文件,填写标题和原始音频数据。
private void bootloadCreateWaveMix(String p1, String p2, String p3) throws IOException {
int size1 = 0;
int size2 = 0;
FileInputStream fis1 = null;
FileInputStream fis2 = null;
try {
fis1 = new FileInputStream(p1);
fis2 = new FileInputStream(p2);
size1 = fis1.available();
size2 = fis2.available();
} finally {
if(fis1 != null){
fis1.close();
}
if(fis2 != null){
fis2.close();
}
}
int mNumBytes = (size1 + size2);
DataOutputStream out = null;
try {
out = new DataOutputStream(new FileOutputStream(p3));
writeId(out, "RIFF");
writeInt(out, 36 + mNumBytes);
writeId(out, "WAVE");
writeId(out, "fmt ");
writeInt(out, 16);
writeShort(out, (short) 1);
writeShort(out, (short) 4);
writeInt(out, (int) 44100);
writeInt(out, 2 * 44100 * 16 / 8);
writeShort(out, (short)(2 * 16 / 8));
writeShort(out, (short) 16);
writeId(out, "data");
writeInt(out, mNumBytes);
out.write(toByteArray(bufData3));
} finally {
if(out != null){
out.close();
}
}
}
private static void writeId(OutputStream out, String id) throws IOException {
for (int i = 0; i < id.length(); i++) out.write(id.charAt(i));
}
private static void writeInt(OutputStream out, int val) throws IOException {
out.write(val >> 0);
out.write(val >> 8);
out.write(val >> 16);
out.write(val >> 24);
}
private static void writeShort(OutputStream out, short val) throws IOException {
out.write(val >> 0);
out.write(val >> 8);
}
public static byte[] toByteArray(ArrayList<Byte> in) {
byte[] data = new byte[in.size()];
for (int i = 0; i < data.length; i++) {
data[i] = (byte) in.get(i);
}
return data;
}
private void bootloadCreateWaveMix(字符串p1、字符串p2、字符串p3)引发IOException{
int size1=0;
int size2=0;
FileInputStream fis1=null;
FileInputStream fis2=null;
试一试{
fis1=新文件输入流(p1);
fis2=新文件输入流(p2);
size1=fis1.available();
size2=fis2.available();
}最后{
如果(fis1!=null){
fis1.关闭();
}
如果(fis2!=null){
fis2.close();
}
}
int mNumBytes=(大小1+2);
DataOutputStream out=null;
试一试{
out=新数据输出流(新文件输出流(p3));
减记(去掉“RIFF”);
写入(输出,36+兆字节);
减记(输出,“波”);
减记(转出,“fmt”);
减记(外,16);
减记(外,(短)1);
减记(外,(短)4);
注销(输出,(内部)44100);
减记(外,2*44100*16/8);
减记(外,(短)(2*16/8));
减记(外,(短)16);
writeId(输出,“数据”);
写入(输出,百万字节);
out.write(toByteArray(bufData3));
}最后{
if(out!=null){
out.close();
}
}
}
私有静态void writeId(OutputStream out,字符串id)引发IOException{
for(int i=0;i>0);
out.write(val>>8);
out.write(val>>16);
out.write(val>>24);
}
私有静态void writeShort(OutputStream out,short val)引发IOException{
out.write(val>>0);
out.write(val>>8);
}
公共静态字节[]toByteArray(ArrayList in){
字节[]数据=新字节[in.size()];
对于(int i=0;i
问题:
此代码无法正确创建计算机无法创建的文件
播放,但设备可以。繁殖不好,有某种
合并文件末尾的干涉。此外,播放在以下时间结束:
第一个文件结束,即使第二个文件比第一个文件大
一个。另一个问题与渠道的想法是两个立体声
文件,在标题中我指出4个生命,尽管2个。档案
将始终为44100/16位/立体声
如果我理解正确,您需要执行以下操作:
DataInputStream
来实现这一点,但一定要考虑到endianness——WAV文件是小endian,Java是大endian)。获得代表样本的短片后,对单独文件中的短片进行平均以进行混合。然后必须将平均值转换回字节(DataOutputStream
)以保存生成的文件。当一个文件中的数据用完时,用零代替<>我强烈要求你考虑使用一个像JMF这样的库来处理1和2。< /P> < P>如果我理解正确,你想做以下事情:
n1 = number of samples in file 1
n2 = number of samples in file 2
n = MAX( n1 + n2 )
numBytes = n * (number of channels) * (number of bytes per channel) = n * 2 * 2