简单的jpeg转成avi的类

简单的jpeg转成avi的类(11)  if (NULL == fdest) {
  cerr << "Can't create a new file to write (" << this->avi_name_ << ")!" << endl;
  return -2;
 }
 //fwrite (&list_hdrl.avih.max_bytes_per_sec, 4, 1, fdest);
 long nbr;
 long nbw;
 long tnbw = 0;
 long mfsz;
 long remnant;
 char buff[512];

 //write file header
 fwrite ("RIFF", 4, 1, fdest);
 print_quartet (fdest, riff_sz);
 fwrite ("AVI ", 4, 1, fdest);
 fwrite (&list_hdrl, sizeof (struct AVI_list_hdrl), 1, fdest);

 //sort the list by file name
 sort (this->jpeg_list.begin (), this->jpeg_list.end (), AviGenerator::Jpeg_Data::lestthan);
 // list movi
 size_t offset = 4;
 fwrite ("LIST", 4, 1, fdest);
 print_quartet (fdest, jpg_sz + 8 * frames + 4);
 fwrite ("movi", 4, 1, fdest);
 //write video data
 for (vector <Jpeg_Data*>::iterator iter = this->jpeg_list.begin (); iter != jpeg_list.end (); ++iter) {
  #ifdef DEBUG_VERSION
  cout << "dealing with " << (*iter)->name << endl;
  #endif
  fwrite ("00db", 4, 1, fdest);
  mfsz = (*iter)->size;
  remnant = (4 - (mfsz % 4)) % 4;
  print_quartet (fdest, mfsz + remnant);
  (*iter)->size += remnant;
  (*iter)->offset = offset;
  offset += (*iter)->size + 8;

  int fd;
  #ifdef _WIN32
   fd = open ((*iter)->name.c_str (), O_RDONLY O_BINARY);
  #else
   fd = open ((*iter)->name.c_str (), O_RDONLY);
  #endif
  if (fd < 0) {
   cerr << "couldn't open file (" << (*iter)->name << ")!" << endl;
   fclose (fdest);
   return -3;