/* Copyright (C) 2001-2012 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.,  7 Mt. Lassen Drive - Suite A-134, San Rafael,
   CA  94903, U.S.A., +1(415)492-9861, for further information.
*/


/* plht.c - shared halftone resource. */
#include "stdpre.h"
#include "gstypes.h"
#include "gsmemory.h"
#include "gxtmap.h"
/* Define an abstract type for the PostScript graphics state. */
#ifndef gs_state_DEFINED
#  define gs_state_DEFINED
typedef struct gs_state_s gs_state;
#endif
#include "gsstate.h"
#include "gxht.h"
#include "gxdevice.h"
#include "plht.h"

int
pl_set_pcl_halftone(gs_state * pgs, gs_mapping_proc transfer_proc,
                    int width, int height,
                    gs_string threshold_data, int phase_x, int phase_y)
{

    int code;
    gs_halftone ht;

    /* nothing to do for a contone device */
    if (!gx_device_must_halftone(gs_currentdevice(pgs)))
        return 0;
    gs_settransfer(pgs, transfer_proc);
    ht.type = ht_type_threshold;
    ht.params.threshold.width = width;
    ht.params.threshold.height = height;
    ht.params.threshold.thresholds.data = threshold_data.data;
    ht.params.threshold.thresholds.size = threshold_data.size;
    ht.params.threshold.transfer = 0;
    ht.params.threshold.transfer_closure.proc = 0;
    code = gs_sethalftone(pgs, &ht);
    if (code < 0)
        return code;
    return gs_sethalftonephase(pgs, phase_x, phase_y);
}
