The calibration function for CanoScanFB620S

From: Mitsuru Okaniwa (m-okaniwa@bea.hi-ho.ne.jp)
Date: Thu Dec 07 2000 - 19:58:10 PST

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    Hi
    I tried to write the Calibration function as follows.
    Are they correct ?
    And I have to put them in the canon.c, canon-sane.c, canon-scsi.c and so on.
    But I don't know where I should put them in the canon backend files.
    Would anybody teach me about this ?

    for canon-scsi.c
    ===================================================================
    static SANE_Status
    reset_scanner (int fd)
    {
      static u_char cmd[10];
      int status;
      DBG (31, ">> reset_scanner\n");

      memset (cmd, 0, sizeof (cmd));
      cmd[0] = 0xc1;
      status = sanei_scsi_cmd (fd, cmd, sizeof (cmd), 0, 0);

      DBG (31, "<< reset_scanner\n");
      return (status);
    }

    static SANE_Status
    execute_calibration (int fd)
    {
      static u_char cmd[6 + 2];
      int status;
      DBG (31, ">> execute_calibration\n");
      memset (cmd, 0, sizeof (cmd));
      cmd[0] = 0xc2;
      cmd[4] = 2;
      status = sanei_scsi_cmd (fd, cmd, sizeof (cmd), 0, 0);
      DBG (31, "<< execute_calibration\n");
      return (status);
    }

    static SANE_Status
    get_calibration_status (int fd, void *buf, size_t *buf_size)
    {
      static u_char cmd[6];
      int status;
      DBG (31, ">> get_calibration_status\n");
      memset (cmd, 0, sizeof (cmd));
      cmd[0] = 0xc3;
      cmd[4] = 2;
      status = sanei_scsi_cmd (fd, cmd, sizeof (cmd), buf, buf_size);
      DBG (31, "<< get_calibration_status\n");
      return (status);
    }

    static SANE_Status
    get_switch_status (int fd, void *buf, size_t *buf_size)
    {
      static u_char cmd[6];
      int status;
      DBG (31, ">> get_switch_status\n");
      memset (cmd, 0, sizeof (cmd));
      cmd[0] = 0xc4;
      cmd[4] = 2;
      status = sanei_scsi_cmd (fd, cmd, sizeof (cmd), buf, buf_size);
      DBG (31, "<< get_switch_status\n");
      return (status);
    }
    ===================================================================

    for canon.c or canon-sane.c
    ===================================================================
        status = reset_scanner(s->fd);
        if (status != SANE_STATUS_GOOD)
        {
          DBG (1, "attach: RESET SCANNER failed\n");
          sanei_scsi_close (s->fd);
          s->fd = -1;
        }

        status = execute_calibration(s->fd);
        if (status != SANE_STATUS_GOOD)
        {
          DBG (1, "attach: EXECUTE CALIBRATION failed\n");
          sanei_scsi_close (s->fd);
          s->fd = -1;
        }

       DBG (3, "sane_start: sending GET CALIBRATION STATUS\n");
       memset (ebuf, 0, sizeof (ebuf));
       buf_size = sizeof (ebuf);
       status = get_calibration_status (s->fd, ebuf, &buf_size);
       if (status != SANE_STATUS_GOOD)
       {
        DBG (1, "sane_start: GET CALIBRATION STATUS failed\n");
        sanei_scsi_close (s->fd);
        return (SANE_STATUS_INVAL);
       }

       DBG (3, "sane_start: sending GET SWITCH STATUS\n");
       memset (ebuf, 0, sizeof (ebuf));
       buf_size = sizeof (ebuf);
       status = get_switch_status (s->fd, ebuf, &buf_size);
       if (status != SANE_STATUS_GOOD)
       {
        DBG (1, "sane_start: GET SWITCH STATUS failed\n");
        sanei_scsi_close (s->fd);
        return (SANE_STATUS_INVAL);
       }
    ===================================================================
    Should I write the other code in anywhere ?

    And how would I write the code to make the button of calibration in the
    xscanimage and to show the message "running calibration" during the
    calibration in xscanimage ?

    regards,
    -----------------------------
    Mitsuru Okaniwa
    email : m-okaniwa@bea.hi-ho.ne.jp
    tel : (Japan)0566-26-6105
    ----------------------------- 

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