/* Copyright (C) 1999 Aladdin Enterprises.  All rights reserved.
  
  This file is part of GNU Ghostscript.
  
  GNU Ghostscript is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY.  No author or distributor accepts responsibility
  to anyone for the consequences of using it or for whether it serves any
  particular purpose or works at all, unless he says so in writing.  Refer
  to the GNU General Public License for full details.
  
  Everyone is granted permission to copy, modify and redistribute GNU
  Ghostscript, but only under the conditions described in the GNU General
  Public License.  A copy of this license is supposed to have been given
  to you along with GNU Ghostscript so you can know your rights and
  responsibilities.  It should be in a file named COPYING.  Among other
  things, the copyright notice and this notice must be preserved on all
  copies.
*/

/*$RCSfile: gdevsunr.c,v $ $Revision: 1.2.2.1 $ */
/* Sun raster file driver */
#include "gdevprn.h"

/*
 * Currently, the only variety of this format supported in this file is
 * Harlequin's 1-bit "SUN_RAS" with no colormap and odd "};\n" at tail.
 */

#define	RAS_MAGIC	0x59a66a95
#define RT_STANDARD	1	/* Raw pixrect image in 68000 byte order */
#define RMT_NONE	0	/* ras_maplength is expected to be 0 */
typedef struct sun_rasterfile_s {
	int	ras_magic;		/* magic number */
	int	ras_width;		/* width (pixels) of image */
	int	ras_height;		/* height (pixels) of image */
	int	ras_depth;		/* depth (1, 8, or 24 bits) of pixel */
	int	ras_length;		/* length (bytes) of image */
	int	ras_type;		/* type of file; see RT_* below */
	int	ras_maptype;		/* type of colormap; see RMT_* below */
	int	ras_maplength;		/* length (bytes) of following map */
} sun_rasterfile_t;

#ifndef X_DPI
#  define X_DPI 72
#endif
#ifndef Y_DPI
#  define Y_DPI 72
#endif

private dev_proc_print_page(sunhmono_print_page);

gx_device_printer gs_sunhmono_device =
    prn_device(prn_std_procs, "sunhmono",
	       DEFAULT_WIDTH_10THS, DEFAULT_HEIGHT_10THS,
	       X_DPI, Y_DPI,
	       0, 0, 0, 0,	/* margins */
	       1, sunhmono_print_page);

private int
sunhmono_print_page(gx_device_printer * pdev, FILE * prn_stream)
{
    int gsLineBytes = gdev_mem_bytes_per_scan_line((gx_device *) pdev);
    /* Output bytes have to be padded to 16 bits. */
    int rasLineBytes = ROUND_UP(gsLineBytes, 2);
    int lineCnt;
    char *lineStorage; /* Allocated for passing storage to gdev_prn_get_bits() */
    byte *data;
    sun_rasterfile_t ras;
    int code = 0;

    /*
      fprintf(stderr,"pdev->width:%d (%d/%d) gsLineBytes:%d rasLineBytes:%d\n",
      pdev->width, pdev->width/8, pdev->width%8,gsLineBytes,rasLineBytes);
    */
    lineStorage = gs_malloc(gsLineBytes, 1, "rasterfile_print_page(in)");
    if (lineStorage == 0) {
	code = gs_note_error(gs_error_VMerror);
	goto out;
    }
    /* Setup values in header */
    ras.ras_magic = RAS_MAGIC;
    ras.ras_width = pdev->width;
    ras.ras_height = pdev->height;
    ras.ras_depth = 1;
    ras.ras_length = (rasLineBytes * pdev->height);
    ras.ras_type = RT_STANDARD;
    ras.ras_maptype = RMT_NONE;
    ras.ras_maplength = 0;
    /* Write header */
    fwrite(&ras, 1, sizeof(ras), prn_stream);
    /* For each raster line */
    for (lineCnt = 0; lineCnt < pdev->height; ++lineCnt) {
	gdev_prn_get_bits(pdev, lineCnt, lineStorage, &data);
	fwrite(data, 1, gsLineBytes, prn_stream);
	if (gsLineBytes % 2)
	    fputc(0, prn_stream); /* pad to even # of bytes with a 0 */
    }
    /* The weird file terminator */
    fwrite("};\n", 1, 3, prn_stream);
out:
    /* Clean up... */
    gs_free(lineStorage, gsLineBytes, 1, "rasterfile_print_page(in)");
    return code;
}
