/* 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.
*/

/* Ricoh 4081 laser printer driver */
#include "gdevprn.h"

#define X_DPI 300			/* pixels per inch */
#define Y_DPI 300			/* pixels per inch */

/* The device descriptor */
static dev_proc_print_page(r4081_print_page);
const gx_device_printer far_data gs_r4081_device =
  prn_device(prn_bg_procs, "r4081",	/* The print_page proc is compatible with allowing bg printing */
        85,				/* width_10ths, 8.5" */
        110,				/* height_10ths, 11" */
        X_DPI, Y_DPI,
        0.25, 0.16, 0.25, 0.16,		/* margins */
        1, r4081_print_page);

/* ------ Internal routines ------ */

/* Send the page to the printer. */
static int
r4081_print_page(gx_device_printer *pdev, gp_file *prn_stream)
{
        int line_size = gdev_mem_bytes_per_scan_line((gx_device *)pdev);
        int out_size = ((pdev->width + 7) & -8) ;
        byte *out = (byte *)gs_malloc(pdev->memory, out_size, 1, "r4081_print_page(out)");
        int lnum = 0, code = 0;
        int last = pdev->height;

        /* Check allocations */
        if ( out == 0 )
                return_error(gs_error_VMerror);

        /* find the first line which has something to print */
        while ( lnum < last )
        {
                code = gdev_prn_copy_scan_lines(pdev, lnum, (byte *)out, line_size);
                if (code < 0)
                     goto xit;
                if ( out[0] != 0 ||
                     memcmp((char *)out, (char *)out+1, line_size-1)
                   )
                        break;
                lnum ++;
        }

        /* find the last line which has something to print */
        while (last > lnum) {
                code = gdev_prn_copy_scan_lines(pdev, last-1, (byte *)out, line_size);
                if (code < 0)
                     goto xit;
                if ( out[0] != 0 ||
                     memcmp((char *)out, (char *)out+1, line_size-1)
                   )
                        break;
                last --;
        }

        /* Initialize the printer and set the starting position. */
        gp_fprintf(prn_stream,"\033\rP\033\022YB2 \033\022G3,%d,%d,1,1,1,%d@",
                        out_size, last-lnum, (lnum+1)*720/Y_DPI);

        /* Print lines of graphics */
        while ( lnum < last )
           {
                code = gdev_prn_copy_scan_lines(pdev, lnum, (byte *)out, line_size);
                if (code < 0)
                     goto xit;
                gp_fwrite(out, sizeof(char), line_size, prn_stream);
                lnum ++;
           }

        /* Eject the page and reinitialize the printer */
        gp_fputs("\f\033\rP", prn_stream);

xit:
        gs_free(pdev->memory, (char *)out, out_size, 1, "r4081_print_page(out)");
        return code;
}