virtualModem/src/net/hoo2/auth/vmodem/Image.java

package net.hoo2.auth.vmodem;

import java.io.*;

class Image {
   static final int     IMAGE_BUFFER_SIZE    = 256*1024;
   static final byte[]  IMAGE_BEGIN          = {(byte)0xFF, (byte)0xD8};
   static final byte[]  IMAGE_END            = {(byte)0xFF, (byte)0xD9};

   private Com          com_;
   private Log          log_;
   private Transaction  transaction_;
   private String       filename_;
   private int          items_;
   private byte[]       code_;
   
   Image (Com com, Log log, byte[] code, String filename, int items) {
      com_        = com;
      log_        = log;
      transaction_= new Transaction(null, new byte[IMAGE_BUFFER_SIZE]);
      filename_   = filename;
      items_      = items;
      code_       = code;
   }
   
   void code (byte[] code) { code_ = code; }

   void caption (byte[] code) {
      String line;

      line = "Running video decoder with: " + new String(code);
      log_.write(line, true);

      transaction_ = com_.request (transaction_, null, null, null, false);
      line = new String(transaction_.getResponse());
      log_.out(line);
   }
   
   void run () {
      String file, line;
      BufferedOutputStream ostream;

      for (int i =1 ; i<= items_ ; ++i) {
         if (items_>1)
            file = filename_ + "_" + i + ".jpg";
         else
            file = filename_ + ".jpg";
         line = new String(code_) + ": ";
         log_.write(line);
         transaction_ = com_.request(transaction_, code_, IMAGE_BEGIN, IMAGE_END, true);
         line = "File= " + file
              + " Tr= " + (transaction_.arrival - transaction_.departure) + " [msec]"
              + " Tt= " + (System.currentTimeMillis() - transaction_.departure) + " [msec]";
         log_.write(line);
         try {
            ostream = new BufferedOutputStream(new FileOutputStream(file));
            ostream.write(transaction_.response);
            ostream.flush();
            ostream.close();
         }
         catch (Exception exp) {
            System.err.println ("Error creating " + file + exp.getMessage());
            return;
         }
      }
   }
}