void Connector::handleReadyRead()
{
qDebug()<<"Connector::handleReadyRead";
ba.append(readAll());
if (ba.size() >= exceptByte) {
emit readAllData();
}
}
void Connector::stopRead()
{
qDebug("stop Read");
disconnect(this, SIGNAL(readyRead()), this, SLOT(handleReadyRead()));
disconnect(this, SIGNAL(readAllData()), this, SLOT(handleReadData()));
//清空
ba.clear();
clear();
}
void Connector::startRead(qint8 start, qint8 num)
{
qDebug("start Read");
exceptByte = 5 + 48 * num; // 数据头+数据
qDebug()<<QString("start = %1, num = %2").arg(start).arg(num);
stopRead();
connect(this, SIGNAL(readyRead()), this, SLOT(handleReadyRead()));
connect(this, SIGNAL(readAllData()), this, SLOT(handleReadData()));
this->start = start;
this->num = num;
callForData(start, num);
}
static int
preCondition(sqlite3** pphandle)
{
int ret = 0;
const char* pathname = DB_FILENAME;
ret = sqlite3_open(pathname, pphandle);
if (ret != SQLITE_OK)
{
fprintf(stderr, "open %s failure, return code = %d\n", DB_FILENAME, ret);
return ret;
}
applyMemoryPool(pathname);
readAllData(*pphandle);
return 0;
}
int main(int argc, char *argv[])
{
int i = 0;
unsigned int N = 0;
int spec = 0;
int showHead = 0;
//int samplerate = 0;
//unsigned int numOfSamples = 0;
char fileName[300];
struct WaveHeader *wav;
FILE *fWavIn = NULL;
//ToDO: better error handling
if (argc < 3) {
showUsage();
return 1;
}
printf("Total args %d\n", argc);
for (i = 1; i < (argc); i++) {
if (strcasecmp("-spec", argv[i])==0) {
spec = 1;
if (i+1 == argc) {
fprintf(stderr,"\n**ERROR: No sample size associated with \"-spec\"**\n");
return 1;
}
N = atoi(argv[++i]);
if (N < 5) {
fprintf(stderr, "\n**ERROR: <%s> is not a valid sample size (use 5+)**\n", argv[i]);
return 1;
}
continue;
}
if (strcmp("-?", argv[i])==0) {
showUsage();
return 1;
}
if (strcasecmp("-showhead", argv[i])==0) {
showHead = 1;
continue;
}
if (strcasecmp("-file", argv[i])==0) {
//require a filename to go along with the -file
//check -file isn't the last arg, otherwise it throws a sigsegv
if (i+1 == argc) {
fprintf(stderr,"\n**ERROR: No filename listed with \"-file\"\n");
return 1;
}
strncpy(fileName, argv[++i],300);
fWavIn = fopen(fileName, "rb");
if (!fWavIn) {
fprintf(stderr,"\n**ERROR: Could not open file \"%s\"\n", fileName);
return 1;
}
continue;
}
}
//it's a little hacky, but this checks if we have a file
if(fWavIn==NULL) {
showUsage();
return 1;
}
//return 0;
wav = malloc(sizeof(struct WaveHeader));
strncpy(wav->wavName,fileName ,300);
if (readHeader(fWavIn, wav) != 0) {
fprintf(stderr, "Error reading (%s), check if it is a valid wav file\n",fileName);
return 1;
}
if (showHead == 1) {
printHeader(wav);
}
readAllData(fWavIn,wav);
//process the data
if (spec == 1) {
writeFFT(N, wav);
}
/*
//test code to write out raw data as it was read in
for (i = 0; i < numOfSamples; i++) {
fwrite(&wav->chan1[i],1,2,fOut);
if (wav->nChannels > 1)
fwrite(&wav->chan2[i],1,2,fOut);
if (wav->nChannels > 2)
fwrite(&wav->chan3[i],1,2,fOut);
if (wav->nChannels > 3)
fwrite(&wav->chan4[i],1,2,fOut);
}
*/
//free up memory
freeChannelMemory(wav);
free(wav);
fclose(fWavIn);
return 0;
}
