[Vorbis] ov_read

[Steve Russell]

Until now, the largest ogg file I ever decoded was about 15 kb.  Now I am 
trying to decode files that are
approximated 2 to 3 times larger, and the program is crashing.  Could 
someone point out my problem?

 vorbis_info *vi = ov_info(&vf,-1);
 memset(&m_Format, 0, sizeof(m_Format));
 m_Format.cbSize          = 0;
 m_Format.nChannels       = vi->channels;
 m_Format.wBitsPerSample  = 16;
 m_Format.nSamplesPerSec  = vi->rate;
 m_Format.nAvgBytesPerSec = m_Format.nSamplesPerSec * m_Format.nChannels *
2;
 m_Format.nBlockAlign     = 2 * m_Format.nChannels;
 m_Format.wFormatTag      = 1;

 int eof = 0;
 int current_section;
 while(!eof)
 {
  long bytes_read = ov_read(&vf, m_lpData + dwBufferLength, 4096, 0, 2, 1, 
&current_section);
  if(bytes_read == 0)
   // EOF
   eof = 1;
  else
   dwBufferLength += bytes_read;
 }