/*
 * call-seq:
 *    num_channels
 *
 * Get the number of channels
 */
static VALUE get_num_channels(VALUE self)
{
  lame_global_flags * gfp;
  Data_Get_Struct(self, lame_global_flags, gfp);
  return INT2NUM(lame_get_num_channels(gfp));
}