float *ReadWaveFile(WAVHDR *WavHdr, int *SampleNum, FILE *fp)
{
float *data;
short *datashort;
unsigned char *datachar;
assert(fp);
ReadWaveHdr(WavHdr, fp);
(*SampleNum) = (WavHdr->Subchunk2Size)*8/(WavHdr->BitsPerSample);
if (WavHdr->BitsPerSample == 8)
{
fseek(fp, 44, SEEK_SET);
datachar = (unsigned char *)malloc ((*SampleNum)*sizeof(char));
fread((void *)datachar, sizeof(char), (*SampleNum), fp);
data = char2float(datachar, (*SampleNum));
free(datachar);
}
else
{
fseek(fp, 44, SEEK_SET);
datashort = (short *)malloc ((*SampleNum)*sizeof(short));
fread((void *)datashort, sizeof(short), (*SampleNum), fp);
data = short2float(datashort, (*SampleNum));
free(datashort);
};
return data;
}
int main(int argc, char** argv)
{
int i;
unsigned int mask = 0x1F80;
__asm {
ldmxcsr mask;
stmxcsr mask;
}
// set the rounding mode to round toward zero instead of the default round to nearest.
mask |= (3L << 13);
__asm {
ldmxcsr mask;
}
floats = (float*) GlobalAlloc(GPTR, 32 * sizeof(float));
shorts = (short*) GlobalAlloc(GPTR, 32 * sizeof(short));
floats = (float*) (((unsigned int)floats + 15L) & ~15L);
shorts = (short*) (((unsigned int)shorts + 15L) & ~15L);
for (i = 0; i < 16; i++) {
shorts[i] = (short)(i * 3.1415f);
printf("reference: %f\n", (float)shorts[i]);
}
short2float(shorts, floats, 16);
for (i = 0; i < 16; i++)
printf("%f\n", floats[i]);
printf("-----------------------\n");
for (i = 0; i < 16; i++) {
floats[i] = i * 3.1415f;
printf("reference: %d\n", (short)floats[i]);
}
float2short(floats, shorts, 16);
for (i = 0; i < 16; i++)
printf("%d\n", shorts[i]);
return 0;
}
