//显示已经保存的信息
int ShowData(struct tagIndex *pInfo, int nInfoLen)
{
int nCurIndex = 0;
struct tagInfo *pShowMsg = NULL;
//获得头指针
int i = FindHead(pInfo, nInfoLen);
if (i == -1)
{
printf("没有内容！\r\n");
printf("总剩余空间：%d\r\n", GetFreeSizeSum());
printf("总连续空间：%d\r\n", GetWholeSizeSum());
return 0;
}
FILE *fp = NULL;
MY_FOPEN(fp, DATAFILE);
nCurIndex = i;
i = 0;
while (1)
{
pShowMsg = (struct tagInfo *)malloc(pInfo[nCurIndex].m_nlength);
if (pShowMsg == NULL)
{
exit(1);
}
fseek(fp, pInfo[nCurIndex].m_nOffset, SEEK_SET);
Myfread(pShowMsg, pInfo[nCurIndex].m_nlength, fp);
printf("--联系人[%d]--偏移地址[%p]--\r\n", i, pInfo[nCurIndex].m_nOffset);
ShowInfoMsg(pShowMsg);
ShowMsg("");
if (pShowMsg != NULL)
{
free(pShowMsg);
pShowMsg = NULL;
}
i++;
nCurIndex = pInfo[nCurIndex].m_nNextIndex;
if (nCurIndex == -1)
{
break;
}
}
printf("总剩余空间：%d\r\n", GetFreeSizeSum());
printf("总连续空间：%d\r\n", GetWholeSizeSum());
if (fp != NULL)
{
fclose(fp);
fp = NULL;
}
return 1;
}
/*****************************************
功能: 解调 从InDataBuf开始Lenth 这么长的数据 里，用MobileType方式，解调出数据，存在OutDataBuf里
反回时，解到哪个点放在OutLenIndix里
本函数调用的函数清单: 无
调用本函数的函数清单: main
输入参数: *InDataBuf 采样值地址
lenth 总长度
输出参数: *OutDataBuf 数据保存的地方
*OutLenIndix 解到哪里
函数返回值说明: 0:出错，1:没有滤波 2:需要滤波
使用的资源
******************************************/
int Demodulate(BYTE *OutDataBuf, short *InDataBuf,
unsigned long lenth,unsigned long *OutLenIndix)
{
BYTE LoopForSmooth = 0;// 0 是第一次，1是第二次
BYTE DemodulationResult = 0;// 找同步头和解调的结果，1为成功，0为失败
unsigned long lLowF = 0;
unsigned long lHighF = 0;
int MobileType = 3; // 表示频率5.5k，解调的频率是固定的
for(LoopForSmooth = 0;LoopForSmooth < 2; LoopForSmooth++ )
{
if(LoopForSmooth == 1)//两次循环，先不滤波，解不出来再滤波。
{
printf("start Smoothing wave\n");//
lLowF = (unsigned long)((float)(2000*2/(MobileType+1))*(float)(1.0/32.0 * (float)(MobileType+1)+15.0/16.0));
lHighF = (unsigned long)((float)(15000*2/(MobileType+1))*(float)(1.0/16.0 * (float)(MobileType+1)+7.0/8.0));
memcpy(InDataBuf,(char*)InDataBuf+lenth*2,lenth*2);
SmoothingWave(InDataBuf,lenth, lLowF, lHighF, 44100);
*OutLenIndix = 0;
}
DisInterference(InDataBuf,lenth,MobileType);//去扰
DemodulationResult = FindHead(InDataBuf,lenth,OutLenIndix,MobileType);//找同步头
if( DemodulationResult == 1)//如果找到了，则解
{
DemodulationResult = GetAllData(OutDataBuf,InDataBuf,lenth,OutLenIndix,MobileType);//解调
}
if(LoopForSmooth == 0)
{
if(DemodulationResult == 1)//continue;//第一次解不出来，滤波后再解
{
printf("with no need for Smoothing wave\n");//
return 1;//第一次就解出来了，说明是没有滤波就解出来了
}
}
else if(LoopForSmooth == 1)
{
if(DemodulationResult == 0)
{
return 0;//第二次还解不出来，出错了
}
else
{
printf("need Smoothing wave\n");//
return 2;//第二次才解出来，说明需要滤波
}
}
}
return 0;//出错了
}
//显示存储信息(碎片)
void ShowSaveCount(struct tagIndex *pInfo, int nInfoLen, int nBaseOffset)
{
int nOffset = nBaseOffset;
int nFreeFlg = 0;
int nCurIndex = FindHead(pInfo, nInfoLen);
while (nOffset < nBaseOffset + DATA_SIZE)
{
if (CheckOffsetExits(pInfo, nInfoLen, nOffset) >= 0)
{
printf("■");
}
else
{
printf("□");;
}
nOffset++;
}
ShowMsg("\r\n");
}
//统计
int ShowStringCount(struct tagIndex *pInfo, int nInfoLen)
{
//只统计ascii从0x20~0x7e的字符
int nMyAsciiAry[0x7e - 0x20] = {0};
int nAsciiSum = 0;
int nCurIndex = FindHead(pInfo, nInfoLen);
char *szBuf = NULL;
FILE *fp = NULL;
MY_FOPEN(fp, DATAFILE);
while (1)
{
char szRead[128] = {'\0'};
fseek(fp, pInfo[nCurIndex].m_nOffset, SEEK_SET);
Myfread(szRead, 128, fp);
szBuf = szRead;
while (*szBuf != '\0')
{
nMyAsciiAry[*szBuf - 0x20]++;
szBuf++;
nAsciiSum++;
}
nCurIndex = pInfo[nCurIndex].m_nNextIndex;
if (nCurIndex == -1)
{
break;
}
}
for (int i = 0; i < (0x7e - 0x20); i++)
{
if (nMyAsciiAry[i] != 0)
{
printf("联系人 [%c] 出现了%d次，出现频率为 %f%%\r\n",
(char)(i + 0x20),
nMyAsciiAry[i],
((float)(nMyAsciiAry[i]) / (float)(nAsciiSum)) * 100.0f);
}
}
MY_FCLOSE(fp);
return 0;
}
