/* Copyright (C) 2001 artofcode LLC.  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: gdevp14.h,v 1.4 2005/03/14 18:08:36 dan Exp $ */
/* Definitions and interface for PDF 1.4 rendering device */

#ifndef gdevp14_INCLUDED
#  define gdevp14_INCLUDED

typedef enum {
    DeviceGray = 0,
    DeviceRGB = 1,
    DeviceCMYK = 2
} pdf14_default_colorspace_t;

typedef struct pdf14_buf_s pdf14_buf;
typedef struct pdf14_ctx_s pdf14_ctx;

struct pdf14_buf_s {
    pdf14_buf *saved;

    bool isolated;
    bool knockout;
    byte alpha;
    byte shape;
    gs_blend_mode_t blend_mode;

    bool has_alpha_g;
    bool has_shape;

    gs_int_rect rect;
    /* Note: the traditional GS name for rowstride is "raster" */

    /* Data is stored in planar format. Order of planes is: pixel values,
       alpha, shape if present, alpha_g if present. */

    int rowstride;
    int planestride;
    int n_chan; /* number of pixel planes including alpha */
    int n_planes; /* total number of planes including alpha, shape, alpha_g */
    byte *data;

    byte *transfer_fn;

    gs_int_rect bbox;
};

struct pdf14_ctx_s {
    pdf14_buf *stack;
    pdf14_buf *maskbuf;
    gs_memory_t *memory;
    gs_int_rect rect;
    bool additive;
    int n_chan;
};

typedef struct pdf14_device_s {
    gx_device_forward_common;

    pdf14_ctx *ctx;
    float opacity;
    float shape;
    float alpha; /* alpha = opacity * shape */
    gs_blend_mode_t blend_mode;
    const gx_color_map_procs *(*save_get_cmap_procs)(const gs_imager_state *,
						     const gx_device *);
    gx_device_color_info saved_clist_color_info;
} pdf14_device;

int gs_pdf14_device_push(gs_memory_t *mem, gs_imager_state * pis,
		gx_device * * pdev, gx_device * target);

int send_pdf14trans(gs_imager_state * pis, gx_device * dev,
    gx_device * * pcdev, gs_pdf14trans_params_t * pparams, gs_memory_t * mem);

#endif /* gdevp14_INCLUDED */