?? ipdvb5.0.c
字號(hào):
#include<stdio.h>#include<string.h>#include <linux/slab.h>#define MODULE#include<linux/module.h>#include<linux/kernel.h>unsigned long crc32_table[256] ={0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D,};//函數(shù)聲明int ProtoTrans(unsigned short pid,unsigned char encapMode, unsigned char continuity,unsigned char proto);int sendandsee(unsigned char*);//主函數(shù)int init_module(){ int a; a= ProtoTrans(100,1,1,1);}//函數(shù)實(shí)現(xiàn)int ProtoTrans(unsigned short pid,unsigned char encapMode, unsigned char continuity,unsigned char proto){ //被封裝數(shù)據(jù)定義 char *skb="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabaaaaaaaaaaaaaaaaaaaa"; int t; t=200;//skb 的長(zhǎng)度.////SNDU 頭部typedef struct sSNDU_HEADER{unsigned d : 1;unsigned length : 15;unsigned type;} SNDU_HEADER;////ULE封裝int sndu_len;//SNDU長(zhǎng)度if (encapMode == 1)//ULE{ SNDU_HEADER vsnduh; SNDU_HEADER *snduh; snduh=&vsnduh; memset(snduh,0,sizeof(SNDU_HEADER)); //int sndu_len; vsnduh.d = 0; vsnduh.length = 4; sndu_len = vsnduh.length + t + 4; if (proto == 1) vsnduh.type = 0x0800; if (proto == 2) vsnduh.type = 0x08DD; unsigned char *sndu_buff; sndu_buff=(unsigned char*)kmalloc(sndu_len); //long crcVal; // long crcVal=100; //計(jì)算CRC32 unsigned long crcVal; int i;int j;int crc;for (i = 0; i < 256; i++) { crcVal = i; for (j = 0; j < 8; j++) { if (crc & 1) { crcVal = (crc >> 1) ^ 0xEDB88320; } else { crcVal >>= 1; } } crc32_table[i] = crcVal; }unsigned longsp_crc32( void *buf, size_t size ){unsigned char *data = (unsigned char *)buf;crcVal = 0;while (size ){ crcVal = crc32_table[(crcVal ^ *(data++)) & 0xFFU] ^ (( crcVal >> 8) & 0x00FFFFFF); } return crcVal; } memcpy(sndu_buff,snduh,vsnduh.length); //sp=sndu_buff+snduh->length; memcpy(sndu_buff+vsnduh.length ,skb,t); memcpy(sndu_buff +vsnduh.length+ t,&crcVal,4); printk("下面打印SNDU的頭部信息:\n"); printk("SNDU頭部第一個(gè)字節(jié):%d\n",*sndu_buff); printk("d字段:%d\n",vsnduh.d); printk("length字段:%d\n",vsnduh.length); printk("type字段:%x(十六進(jìn)制)\n",vsnduh.type); printk("crc32值為:%#x\n,crcVal");printk("********************************************\n"); printk("SNDU沒有被fragment前,SNDU負(fù)載第一個(gè)字節(jié):%d(即a----ASCII為97)\n",*(sndu_buff+4)); printk("注意:現(xiàn)在SNDU的總長(zhǎng)為:%d\n",sndu_len); printk("********************************************\n\n"); typedef struct sTS_HEADER { unsigned sync_byte; unsigned transport_error_indicator : 1; unsigned payload_unit_start_indicator : 1; unsigned transport_priority : 1; unsigned PID : 13; unsigned char transport_scrambling_control : 2; unsigned char adaptation_field_control : 2; unsigned char continuity_counter : 4;} TS_HEADER; int leftLen; leftLen = sndu_len; int count = 1; int cishu=0; printk("下面將要把剛才數(shù)據(jù)封裝成的SNDU分成若干個(gè)TS包:\n"); while (leftLen>0) { printk("\n這是第%d次進(jìn)行分段\n",cishu+1); printk("還沒有被TS包分段的有%d個(gè)字節(jié)\n",leftLen); TS_HEADER vtsh; TS_HEADER *tsh; vtsh.sync_byte = 0x47; vtsh.transport_error_indicator = 0; vtsh.transport_priority = 0; vtsh.PID = pid; vtsh.transport_scrambling_control = 0x01; vtsh.adaptation_field_control = 0x01; vtsh.continuity_counter = continuity; tsh=&vtsh; int freeSpace; if (count==1) { vtsh.payload_unit_start_indicator = 1; freeSpace = 183; count++; } else { vtsh.payload_unit_start_indicator = 0; freeSpace = 183; } continuity++; unsigned char ts_buff[188]; memset(ts_buff,0,188); memcpy(ts_buff,tsh,5);///////////////////////////////////////////////////// printk("TS包的頭部信息(以字節(jié)顯示):\n"); int w; int r=1; for (w=0;w<=4;w++) { r++; printk("%d,",*(tsh+w)); if (r%6==0) {printk("\n"); r=1;} } printk("TS包的頭部信息(以字段顯示):\n"); printk("sync_byte字段:%x(十六進(jìn)制)\n",vtsh.sync_byte); printk("transport_error_indicator字段:%d\n",vtsh.transport_error_indicator); printk("transport_priority字段:%d\n",vtsh.transport_priority); printk("payload_unit_start_indicator字段:%d\n",vtsh.payload_unit_start_indicator); printk("transport_priority字段:%d\n",vtsh.transport_priority); printk("PID字段:%d\n",pid); printk("transport_scrambling_control字段:%x(十六進(jìn)制)\n",vtsh.transport_scrambling_control); printk("adaptation_field_control字段:%x(十六進(jìn)制)\n",vtsh.adaptation_field_control); printk("continuity_counter字段:%x(十六進(jìn)制)\n",vtsh.continuity_counter);///////////////////////////////////////////////////// if(leftLen<=freeSpace) { memcpy(ts_buff+5,sndu_buff+cishu*183,leftLen); printk("驗(yàn)證:\n"); printk("這個(gè)TS包里有效負(fù)載的第一個(gè)字節(jié):%d\n",ts_buff[5]); memset(ts_buff+5+leftLen,0xFF, freeSpace -leftLen); leftLen = 0; cishu++; } else { memcpy(ts_buff+5,sndu_buff+cishu*183,freeSpace); printk("驗(yàn)證:\n"); printk("加載SNDU后,TS包里有效負(fù)載的第一個(gè)字節(jié):%d\n",ts_buff[5]); leftLen = leftLen- freeSpace; cishu++; } //printk("%d\n\n",*(tsh+4)); }//while循環(huán)結(jié)束}//判斷if結(jié)束了.return 0;}unsigned long CRC32(char * DataBuf,unsigned long len){ unsigned int i; unsigned long m_CRC = 0xFFFFFFFF; char *pD; pD = DataBuf; for(i=0;i<len;i++) { m_CRC=crc32_table[(m_CRC^(*(pD+i)))&0xff] ^ (m_CRC>>8); } return ~m_CRC;}void cleanup_module(void){ printk("goodbuy,beautiful world!!----this module comes to its end.\n\n");}?? 快捷鍵說明
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