1.byteutil 工具类，好打印字节数组 2.关闭h264文件写入

Dana

2025-11-30 2351ee9d82136621690291f310fa6c4980d23c49

1.byteutil 工具类，好打印字节数组
2.关闭h264文件写入

 app/src/main/java/com/anyun/h264/JT1076TcpClient.java

@@ -2,6 +2,8 @@

import android.util.Log;

import com.anyun.h264.util.BytesUtils;

import io.netty.bootstrap.Bootstrap;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
@@ -140,7 +142,8 @@
        try {
            // 将字节数组包装为ByteBuf
            ByteBuf buffer = Unpooled.wrappedBuffer(packet);
            
            String str = BytesUtils.bytesToHexString(  BytesUtils.subArray(buffer.array(),0,30));
            Log.i(TAG, "Send TCP packet:"+ str);
            // 异步写入
            ChannelFuture future = channel.writeAndFlush(buffer);
            

 app/src/main/java/com/anyun/h264/MainActivity.kt

@@ -66,7 +66,7 @@
            // 设置输出文件（可选）
            val outputFile = File(getExternalFilesDir(null), "test.h264")
            h264Encoder?.setOutputFile(outputFile.absolutePath)
            h264Encoder?.setEnableFileOutput(true) // 启用文件输出
            h264Encoder?.setEnableFileOutput(false) // 启用文件输出
            
            // 设置UDP服务器地址（可选）
             h264Encoder?.setServerAddress("58.48.93.67", 11935)

 app/src/main/java/com/anyun/h264/util/BytesUtils.java

New file
@@ -0,0 +1,212 @@
package com.anyun.h264.util;

import java.lang.reflect.Array;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Stream;

public final class BytesUtils {
    public static String bytesToHexString(byte[] src,int len){  
        return bytesToHexString(src,0,len);
    }
    public static String bytesToHexString(byte[] src){  
        return bytesToHexString(src,0,src.length);
    }
    public static String byteToHexString(byte b)
    {
        int v = b & 0xFF;  
        return Integer.toHexString(v);  
    }

    public static float bytesToFloat(byte[] src, int start, int len) {
        ByteBuffer buffer = ByteBuffer.wrap(src, start, len);
        return buffer.getFloat();
    }

    public static String bytesToHexString(byte[] src,int start,int len){  
        StringBuilder stringBuilder = new StringBuilder("");  
        if (src == null || src.length <= 0) {  
            return null;  
        }  
        for (int i = start; i < start + len; i++) {
            int v = src[i] & 0xFF;  
            String hv = Integer.toHexString(v);  
            if (hv.length() < 2) {  
                stringBuilder.append(0);  
            }  
            stringBuilder.append(hv);   
        }  
        return stringBuilder.toString().toUpperCase();  
    }  
    public static byte[] hexStringToBytes(String hexString) {  
        if (hexString == null || hexString.equals("")) {  
            return null;  
        }
        hexString = hexString.toUpperCase();  
        int length = hexString.length() / 2;  
        char[] hexChars = hexString.toCharArray();  
        byte[] d = new byte[length];  
        for (int i = 0; i < length; i++) {  
            int pos = i * 2;  
            d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));  
        }  
        return d;  
    }  
    private static byte charToByte(char c) {  
        return (byte) "0123456789ABCDEF".indexOf(c);  
    }

    public static byte xor(byte[] bytes,int start,int size)
    {
        if (bytes.length < size)
        {
            throw new RuntimeException("计算xor的时候size不足");
        }
        int s1 = bytes[start];
        for (int i = start + 1; i < size; i++)
        {
            s1 = s1 ^ bytes[i];
        }
        return (byte)s1;
    }

    public static int ccitt(byte[] data, int start, int size) {
        final int []table = {0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5,
                0x60c6, 0x70e7, 0x8108, 0x9129, 0xa14a, 0xb16b,
                0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, 0x1231, 0x0210,
                0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
                0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c,
                0xf3ff, 0xe3de, 0x2462, 0x3443, 0x0420, 0x1401,
                0x64e6, 0x74c7, 0x44a4, 0x5485, 0xa56a, 0xb54b,
                0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
                0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6,
                0x5695, 0x46b4, 0xb75b, 0xa77a, 0x9719, 0x8738,
                0xf7df, 0xe7fe, 0xd79d, 0xc7bc, 0x48c4, 0x58e5,
                0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
                0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969,
                0xa90a, 0xb92b, 0x5af5, 0x4ad4, 0x7ab7, 0x6a96,
                0x1a71, 0x0a50, 0x3a33, 0x2a12, 0xdbfd, 0xcbdc,
                0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
                0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03,
                0x0c60, 0x1c41, 0xedae, 0xfd8f, 0xcdec, 0xddcd,
                0xad2a, 0xbd0b, 0x8d68, 0x9d49, 0x7e97, 0x6eb6,
                0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
                0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a,
                0x9f59, 0x8f78, 0x9188, 0x81a9, 0xb1ca, 0xa1eb,
                0xd10c, 0xc12d, 0xf14e, 0xe16f, 0x1080, 0x00a1,
                0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
                0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c,
                0xe37f, 0xf35e, 0x02b1, 0x1290, 0x22f3, 0x32d2,
                0x4235, 0x5214, 0x6277, 0x7256, 0xb5ea, 0xa5cb,
                0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
                0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447,
                0x5424, 0x4405, 0xa7db, 0xb7fa, 0x8799, 0x97b8,
                0xe75f, 0xf77e, 0xc71d, 0xd73c, 0x26d3, 0x36f2,
                0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
                0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9,
                0xb98a, 0xa9ab, 0x5844, 0x4865, 0x7806, 0x6827,
                0x18c0, 0x08e1, 0x3882, 0x28a3, 0xcb7d, 0xdb5c,
                0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
                0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0,
                0x2ab3, 0x3a92, 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d,
                0xbdaa, 0xad8b, 0x9de8, 0x8dc9, 0x7c26, 0x6c07,
                0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
                0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba,
                0x8fd9, 0x9ff8, 0x6e17, 0x7e36, 0x4e55, 0x5e74,
                0x2e93, 0x3eb2, 0x0ed1, 0x1ef0};
        int crc = 0;
        int finall = 0;

        for (int i = start; i < start + size; i++) {
            int temp = (data[i] ^ (crc >> 8)) & 0xff;
            crc = table[temp] ^ (crc << 8);
        }

        return crc ^ finall;
    }

    public static byte xor(byte[] bytes)
    {
        return xor(bytes,0,bytes.length);
    }
    public static String toHexString(byte b)
    {
        String hex = Integer.toHexString(b&0xff).toUpperCase();
        if(hex.length()==1)
        {
            return "0"+hex;
        }
        return hex;
    }
	
    public static int Sum(byte[] bytes)
    {
        int sum = 0;
        for(byte b:bytes)
        {
            sum+=b;
        }
        return sum;
    }

    public static boolean isAllZero(byte[] bytes)
    {
        for (byte b:bytes) {
            if (b != 0) {
                return false;
            }
        }
        return true;
    }

    public static int getInt32(byte[] bytes,int start){  
        int result = 0;
        int a = (bytes[0+start] & 0xff) << 24;
        int b = (bytes[1+start] & 0xff) << 16;  
        int c = (bytes[2+start] & 0xff) << 8;  
        int d = (bytes[3+start] & 0xff);  
        result = a | b | c | d;
        return result;  
    }

    public static byte[] subArray(byte[] array,int start,int len)
    {
        byte[] result = new byte[len];
        System.arraycopy(array,start,result,0,len);
        return result;
    }

    private static int findPos(byte[] array,byte find,int start)
    {
        for(int i=start;i<array.length;i++)
        {
            if(array[i]==find) return i;
        }
        return -1;
    }

    public static List<byte[]> splitArray(byte[] bytes, byte spliter)
    {
        ArrayList<byte[]> list = new ArrayList();
        int start = 0;
        while (true) {
            int pos = findPos(bytes, spliter,start);
            if(pos>=0)
            {
                byte[] findbytes = subArray(bytes,start,pos - start);
                list.add(findbytes);
                start = pos + 1;
            }
            else
            {
                break;
            }
        }
        //添加最后一个数组
        byte[] findbytes = subArray(bytes,start,bytes.length - start);
        list.add(findbytes);
        return list;
    }
}