/* Copyright (C) 2001-2019 Artifex Software, Inc.
   All Rights Reserved.

   This software is provided AS-IS with no warranty, either express or
   implied.

   This software is distributed under license and may not be copied,
   modified or distributed except as expressly authorized under the terms
   of the license contained in the file LICENSE in this distribution.

   Refer to licensing information at http://www.artifex.com or contact
   Artifex Software, Inc.,  1305 Grant Avenue - Suite 200, Novato,
   CA 94945, U.S.A., +1(415)492-9861, for further information.
*/

/* Sony NWP-533 driver for GhostScript */
#include "gdevprn.h"
#define prn_dev ((gx_device_printer *)dev) /* needed in 5.31 et seq */
#include <sys/ioctl.h>
#include <newsiop/lbp.h>

/***
 *** Note: this driver was contributed by a user, Tero Kivinen:
 ***       please contact kivinen@joker.cs.hut.fi if you have questions.
 ***/

#define A4_PAPER 1

#ifdef A4_PAPER
#define PAPER_XDOTS A4_XDOTS
#define PAPER_YDOTS A4_YDOTS
#else
#define PAPER_XDOTS B4_XDOTS
#define PAPER_YDOTS B4_YDOTS
#endif

#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif

/* The device descriptor */
static dev_proc_open_device(nwp533_open);
static dev_proc_print_page(nwp533_print_page);
static dev_proc_close_device(nwp533_close);
/* Since the print_page doesn't alter the device, this device can print in the background */
static gx_device_procs nwp533_procs =
  prn_procs(nwp533_open, gdev_prn_bg_output_page_seekable, nwp533_close);

const gx_device_printer far_data gs_nwp533_device =
  prn_device(nwp533_procs, "nwp533",
        PAPER_XDOTS * 10.0 / DPI,	/* width_10ths */
        PAPER_YDOTS * 10.0 / DPI,	/* height_10ths */
        DPI,				/* x_dpi */
        DPI,				/* y_dpi */
        0,0,0,0,			/* margins */
        1, nwp533_print_page);

/* return True if should retry - False if should quit */
static int
analyze_error(int printer_file)
{
  struct lbp_stat status;
  char *detail = NULL, *old_detail = NULL;
  int waiting = TRUE;
  int retry_after_return = TRUE;

  if(ioctl(printer_file, LBIOCRESET, 0) < 0)
    {
      perror("ioctl(LBIOCRESET)");
      return FALSE;
    }
  if (ioctl(printer_file, LBIOCSTATUS, &status) < 0)
    {
      perror("ioctl(LBIOCSTATUS)");
      return FALSE;
    }

  do
    {
      /* Is there an error */
      if(status.stat[0] & (ST0_CALL | ST0_REPRINT_REQ | ST0_WAIT | ST0_PAUSE))
        {
          if(status.stat[1] & ST1_NO_CARTRIGE)/* mispelled? */
            detail = "No cartridge - waiting";
          else if(status.stat[1] & ST1_NO_PAPER)
            detail = "Out of paper - waiting";
          else if(status.stat[1] & ST1_JAM)
            detail = "Paper jam - waiting";
          else if(status.stat[1] & ST1_OPEN)
            detail = "Door open - waiting";
          else if(status.stat[1] & ST1_TEST)
            detail = "Test printing - waiting";
          else {
            waiting = FALSE;
            retry_after_return = FALSE;

            if(status.stat[2] & ST2_FIXER)
              detail = "Fixer trouble - quiting";
            else if(status.stat[2] & ST2_SCANNER)
              detail = "Scanner trouble - quiting";
            else if(status.stat[2] & ST2_MOTOR)
              detail = "Scanner motor trouble - quiting";
            else if(status.stat[5] & ST5_NO_TONER)
              detail = "No toner - quiting";
          }
        }
      else
        {
          waiting = FALSE;
        }
      if(detail != NULL && detail != old_detail)
        {
          perror(detail);
          old_detail = detail;
        }
      if(waiting)
        {
          ioctl(1, LBIOCRESET, 0);
          sleep(5);
          ioctl(1, LBIOCSTATUS, &status);
        }
    }
  while(waiting);
  return retry_after_return;
}

static int
nwp533_open(gx_device *dev)
{
  gx_device_printer *pdev = (gx_device_printer *) dev;

  if (pdev->fname[0] == '\0')
    {
      strcpy(pdev->fname, "/dev/lbp");
    }
  return gdev_prn_open(dev);
}

static int
nwp533_close(gx_device *dev)
{
  if (((gx_device_printer *) dev)->file != NULL)
    {
      int printer_file;

      printer_file = fileno(((gx_device_printer *) dev)->file);
    restart2:
      if(ioctl(printer_file, LBIOCSTOP, 0) < 0)
        {
          if(analyze_error(printer_file))
            goto restart2;
          perror("Waiting for device");
          return_error(gs_error_ioerror);
        }
    }
  return gdev_prn_close(dev);
}

/* Send the page to the printer. */
static int
nwp533_print_page(gx_device_printer *dev, FILE *prn_stream)
{
  int lnum;
  int line_size = gdev_mem_bytes_per_scan_line(dev);
  byte *in;
  int printer_file;
  printer_file = fileno(prn_stream);

  if (line_size % 4 != 0)
    {
      line_size += 4 - (line_size % 4);
    }
  in = (byte *) gs_malloc(dev->memory, line_size, 1, "nwp533_output_page(in)");
 restart:
  if(ioctl(printer_file, LBIOCSTOP, 0) < 0)
    {
      if(analyze_error(printer_file))
        goto restart;
      perror("Waiting for device");
      return_error(gs_error_ioerror);
    }
  lseek(printer_file, 0, 0);

  for ( lnum = 0; lnum < dev->height; lnum++)
    {
      gdev_prn_copy_scan_lines(prn_dev, lnum, in, line_size);
      if(write(printer_file, in, line_size) != line_size)
        {
          perror("Writting to output");
          return_error(gs_error_ioerror);
        }
    }
 retry:
  if(ioctl(printer_file, LBIOCSTART, 0) < 0)
    {
      if(analyze_error(printer_file))
        goto retry;
      perror("Starting print");
      return_error(gs_error_ioerror);
    }
  gs_free(dev->memory, in, line_size, 1, "nwp533_output_page(in)");

  return 0;
}
