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/* Copyright (C) 1996, 1997, 1998, 1999 Aladdin Enterprises. All rights reserved.
This software is licensed to a single customer by Artifex Software Inc.
under the terms of a specific OEM agreement.
*/
/*$RCSfile$ $Revision$ */
/* Implementation of color spaces */
/* Requires gsstruct.h */
#ifndef gxcspace_INCLUDED
# define gxcspace_INCLUDED
#include "gscspace.h" /* client interface */
#include "gsccolor.h"
#include "gscsel.h"
#include "gxfrac.h" /* for concrete colors */
/* Define opaque types. */
#ifndef gx_device_color_DEFINED
# define gx_device_color_DEFINED
typedef struct gx_device_color_s gx_device_color;
#endif
#ifndef gx_device_DEFINED
# define gx_device_DEFINED
typedef struct gx_device_s gx_device;
#endif
/* Color space types (classes): */
/*typedef struct gs_color_space_type_s gs_color_space_type; */
struct gs_color_space_type_s {
gs_color_space_index index;
/*
* Define whether the space can be the base space for an Indexed
* color space or the alternate space for a Separation or DeviceN
* color space.
*/
bool can_be_base_space;
bool can_be_alt_space;
/*
* Define the true structure type for this variant of the color
* space union.
*/
gs_memory_type_ptr_t stype;
/* ------ Procedures ------ */
/*
* Define the number of components in a color of this space. For
* Pattern spaces, where the number of components depends on the
* underlying space, this value is -1 for colored Patterns,
* -N-1 for uncolored Patterns, where N is the number of components
* in the base space.
*/
#define cs_proc_num_components(proc)\
int proc(P1(const gs_color_space *))
#define cs_num_components(pcs)\
(*(pcs)->type->num_components)(pcs)
cs_proc_num_components((*num_components));
/*
* Return the base or alternate color space underlying this one.
* Only defined for Indexed, Separation, DeviceN, and
* uncolored Pattern spaces; returns NULL for all others.
*/
#define cs_proc_base_space(proc)\
const gs_color_space *proc(P1(const gs_color_space *))
#define cs_base_space(pcs)\
(*(pcs)->type->base_space)(pcs)
cs_proc_base_space((*base_space));
/* Construct the initial color value for this space. */
#define cs_proc_init_color(proc)\
void proc(P2(gs_client_color *, const gs_color_space *))
#define cs_init_color(pcc, pcs)\
(*(pcs)->type->init_color)(pcc, pcs)
#define cs_full_init_color(pcc, pcs)\
((pcc)->pattern = 0, cs_init_color(pcc, pcs))
cs_proc_init_color((*init_color));
/* Force a client color into its legal range. */
#define cs_proc_restrict_color(proc)\
void proc(P2(gs_client_color *, const gs_color_space *))
cs_proc_restrict_color((*restrict_color));
/* Return the concrete color space underlying this one. */
/* (Not defined for Pattern spaces.) */
#define cs_proc_concrete_space(proc)\
const gs_color_space *proc(P2(const gs_color_space *,\
const gs_imager_state *))
#define cs_concrete_space(pcs, pis)\
(*(pcs)->type->concrete_space)(pcs, pis)
cs_proc_concrete_space((*concrete_space));
/*
* Reduce a color to a concrete color. A concrete color is one
* that the device can handle directly (possibly with halftoning):
* a DeviceGray/RGB/CMYK/Pixel color, or a Separation or DeviceN
* color that does not use the alternate space.
* (Not defined for Pattern spaces.)
*/
#define cs_proc_concretize_color(proc)\
int proc(P4(const gs_client_color *, const gs_color_space *,\
frac *, const gs_imager_state *))
#define cs_concretize_color(pcc, pcs, values, pis)\
(*(pcs)->type->concretize_color)(pcc, pcs, values, pis)
cs_proc_concretize_color((*concretize_color));
/* Map a concrete color to a device color. */
/* (Only defined for concrete color spaces.) */
#define cs_proc_remap_concrete_color(proc)\
int proc(P5(const frac *, gx_device_color *, const gs_imager_state *,\
gx_device *, gs_color_select_t))
cs_proc_remap_concrete_color((*remap_concrete_color));
/* Map a color directly to a device color. */
#define cs_proc_remap_color(proc)\
int proc(P6(const gs_client_color *, const gs_color_space *,\
gx_device_color *, const gs_imager_state *, gx_device *,\
gs_color_select_t))
cs_proc_remap_color((*remap_color));
/* Install the color space in a graphics state. */
#define cs_proc_install_cspace(proc)\
int proc(P2(const gs_color_space *, gs_state *))
cs_proc_install_cspace((*install_cspace));
/* Adjust reference counts of indirect color space components. */
#define cs_proc_adjust_cspace_count(proc)\
void proc(P2(const gs_color_space *, int))
#define cs_adjust_cspace_count(pgs, delta)\
(*(pgs)->color_space->type->adjust_cspace_count)((pgs)->color_space, delta)
cs_proc_adjust_cspace_count((*adjust_cspace_count));
/* Adjust reference counts of indirect color components. */
/*
* Note: the color space argument may be NULL, which indicates that the
* caller warrants that any subsidiary colors don't have allocation
* issues. This is a hack for an application that needs to be able to
* release Pattern colors.
*/
#define cs_proc_adjust_color_count(proc)\
void proc(P3(const gs_client_color *, const gs_color_space *, int))
#define cs_adjust_color_count(pgs, delta)\
(*(pgs)->color_space->type->adjust_color_count)\
((pgs)->ccolor, (pgs)->color_space, delta)
cs_proc_adjust_color_count((*adjust_color_count));
/* Adjust both reference counts. */
#define cs_adjust_counts(pgs, delta)\
(cs_adjust_color_count(pgs, delta), cs_adjust_cspace_count(pgs, delta))
};
/* Standard color space structure types */
extern_st(st_base_color_space);
#define public_st_base_color_space() /* in gscspace.c */\
gs_public_st_simple(st_base_color_space, gs_base_color_space,\
"gs_base_color_space")
/*extern_st(st_paint_color_space); *//* (not needed) */
/* Standard color space procedures */
cs_proc_num_components(gx_num_components_1);
cs_proc_num_components(gx_num_components_3);
cs_proc_num_components(gx_num_components_4);
cs_proc_base_space(gx_no_base_space);
cs_proc_init_color(gx_init_paint_1);
cs_proc_init_color(gx_init_paint_3);
cs_proc_init_color(gx_init_paint_4);
cs_proc_restrict_color(gx_restrict01_paint_1);
cs_proc_restrict_color(gx_restrict01_paint_3);
cs_proc_restrict_color(gx_restrict01_paint_4);
cs_proc_concrete_space(gx_no_concrete_space);
cs_proc_concrete_space(gx_same_concrete_space);
cs_proc_concretize_color(gx_no_concretize_color);
cs_proc_remap_color(gx_default_remap_color);
cs_proc_install_cspace(gx_no_install_cspace);
cs_proc_adjust_cspace_count(gx_no_adjust_cspace_count);
cs_proc_adjust_color_count(gx_no_adjust_color_count);
/*
* Define the implementation procedures for the standard device color
* spaces. These are implemented in gxcmap.c.
*/
cs_proc_remap_color(gx_remap_DeviceGray);
cs_proc_concretize_color(gx_concretize_DeviceGray);
cs_proc_remap_concrete_color(gx_remap_concrete_DGray);
cs_proc_remap_color(gx_remap_DeviceRGB);
cs_proc_concretize_color(gx_concretize_DeviceRGB);
cs_proc_remap_concrete_color(gx_remap_concrete_DRGB);
cs_proc_remap_color(gx_remap_DeviceCMYK);
cs_proc_concretize_color(gx_concretize_DeviceCMYK);
cs_proc_remap_concrete_color(gx_remap_concrete_DCMYK);
/* Define the allocator type for color spaces. */
extern_st(st_color_space);
/*
* Initialize the type and memory fields of a color space, possibly
* allocating it first. This is only used by color space implementations.
*/
void gs_cspace_init(P3(gs_color_space *pcs,
const gs_color_space_type *pcstype,
gs_memory_t *mem));
int gs_cspace_alloc(P3(gs_color_space **ppcspace,
const gs_color_space_type *pcstype,
gs_memory_t *mem));
#endif /* gxcspace_INCLUDED */
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