// 数据分段
private OggPart processOgg(int size) {
OggPart oggPart = new OggPart();
size = size - 1268;
int loopTimes = size / 1077; // 取整
int restDataLength = size % 1077; // 取余
restDataLength = (restDataLength - 27) / 21;
oggPart.setLoopTimes(loopTimes);
oggPart.setRestDataLength(restDataLength);
return oggPart;
}
// 边读边写，直到读取size个字符------备份
private boolean readAndWrite(InputStream is, FileOutputStream os, FileOutputStream osb) {
byte[] buffer_baidu_ogg = new byte[1000];
byte[] buffer_baidu_frame = new byte[1200];
// 第一块
try {
int count = 1268;
byte[] buffer = new byte[count];
int readCount = 0; // 已经成功读取的字节的个数
while (readCount < count) {
readCount += is.read(buffer, readCount, count - readCount);
}
System.arraycopy(buffer, 268, buffer_baidu_ogg, 0, 1000); // 去掉文件头
System.arraycopy(
processAry(buffer_baidu_ogg, 20, 4), 0, buffer_baidu_frame, 0, 24 * 50); // 帧数据改成24字节
os.write(buffer, 0, 1268);
osb.write(buffer_baidu_frame, 0, 24 * 50);
System.out.println("读取第一部分n=" + readCount);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
// 把语音数据分块
OggPart oggPart = processOgg(size);
int loopTimes = oggPart.getLoopTimes();
int restDataLength = oggPart.getRestDataLength();
// 第二块
for (int i = 0; i < loopTimes; i++) {
try {
int count = 1077;
byte[] buffer = new byte[count];
int readCount = 0; // 已经成功读取的字节的个数
while (readCount < count) {
readCount += is.read(buffer, readCount, count - readCount);
}
System.arraycopy(buffer, 77, buffer_baidu_ogg, 0, 1000); // 去掉ogg头
System.arraycopy(
processAry(buffer_baidu_ogg, 20, 4), 0, buffer_baidu_frame, 0, 24 * 50); // 帧数据改成24字节
os.write(buffer, 0, 1077);
osb.write(buffer_baidu_frame, 0, 24 * 50);
System.out.println("读取第二部分n=" + readCount);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
// 第三块
try {
int count = 27 + restDataLength + 20 * restDataLength;
byte[] buffer = new byte[count];
int readCount = 0; // 已经成功读取的字节的个数
while (readCount < count) {
readCount += is.read(buffer, readCount, count - readCount);
}
System.arraycopy(
buffer, 27 + restDataLength, buffer_baidu_ogg, 0, 20 * restDataLength); // 去掉ogg头
System.arraycopy(
processAry(buffer_baidu_ogg, 20, 4),
0,
buffer_baidu_frame,
0,
24 * 20 * restDataLength); // 帧数据改成24字节
os.write(buffer, 0, restDataLength * 20);
osb.write(buffer_baidu_frame, 0, restDataLength * 24);
System.out.println("读取第三部分n=" + readCount);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
return true;
}
