C++ (Cpp) BlockFile::OpenReadHeader Examples

Example #1

File: WaveTrack.cpp Project: ruthmagnus/audacity

void WaveTrack::Read64K(sampleType * buffer, WaveBlock * b,
                        sampleCount start, sampleCount len)
{
   wxASSERT(b);
   wxASSERT(start >= 0);
   wxASSERT(start + len <= ((b->len + 65535) / 65536));
   start *= 2;
   len *= 2;

   BlockFile *f = b->f;
   bool opened = f->OpenReadHeader();
   wxASSERT(opened);

   f->SeekTo(headerTagLen + start * sizeof(sampleType));

   int result = f->Read((void *) buffer, (int) (len * sizeof(sampleType)));
   wxASSERT(result == (int) (len * sizeof(sampleType)));

   f->Close();
}