shithub: riscv

ref: 16f11e4cd6a925d10aaef1416bbe2d8874618f74
dir: /sys/src/cmd/gs/src/gdevsunr.c/

/* Copyright (C) 1999 Aladdin Enterprises.  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.
  
  For more information about licensing, please refer to
  http://www.ghostscript.com/licensing/. For information on
  commercial licensing, go to http://www.artifex.com/licensing/ or
  contact Artifex Software, Inc., 101 Lucas Valley Road #110,
  San Rafael, CA  94903, U.S.A., +1(415)492-9861.
*/

/* $Id: gdevsunr.c,v 1.7 2004/08/10 13:02:36 stefan Exp $ */
/* 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);

const 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;

    /*
      errprintf("pdev->width:%d (%d/%d) gsLineBytes:%d rasLineBytes:%d\n",
      pdev->width, pdev->width/8, pdev->width%8,gsLineBytes,rasLineBytes);
    */
    lineStorage = gs_malloc(pdev->memory, 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(pdev->memory, lineStorage, gsLineBytes, 1, "rasterfile_print_page(in)");
    return code;
}