/* Copyright (C) 2001-2018 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.,  1305 Grant Avenue - Suite 200, Novato,
   CA 94945, U.S.A., +1(415)492-9861, for further information.
*/

/* Common header file for MGR devices */

#ifndef gdevmgr_INCLUDED
#  define gdevmgr_INCLUDED

#define MGR_RESERVEDCOLORS 16

/* Color mapping routines for 8-bit color (with a fixed palette). */
dev_proc_map_rgb_color(mgr_8bit_map_rgb_color);
dev_proc_map_color_rgb(mgr_8bit_map_color_rgb);

/* extract from dump.h */

/*
 * format for saved bitmaps
 */

#define B_PUTHDR8(hdr, w, h, d) (			\
        (hdr)->magic[0]  = 'y', (hdr)->magic[1] = 'z',  \
        (hdr)->h_wide    = (((w) >> 6) & 0x3f) + ' ',	\
        (hdr)->l_wide    = ((w) & 0x3f) + ' ',		\
        (hdr)->h_high    = (((h) >> 6) & 0x3f) + ' ',	\
        (hdr)->l_high    = ((h) & 0x3f) + ' ',		\
        (hdr)->depth     = ((d) & 0x3f) + ' ',		\
        (hdr)->_reserved = ' ' )

struct b_header {
  char magic[2];           /* magics */
  char h_wide;             /* upper byte width (biased with 0x20) */
  char l_wide;             /* lower byte width (biased with 0x20) */
  char h_high;             /* upper byte height (biased with 0x20) */
  char l_high;             /* lower byte height (biased with 0x20) */
  char depth;              /* depth (biased with 0x20) */
  char _reserved;          /* for alignment */
};

/*
 * Color lookup table information
 */
struct nclut {
  unsigned short colnum;
  unsigned short red, green, blue;
} ;

/* extract from color.h */

/*
 * MGR Color Definitions
 */

#define LUT_BW    0
#define LUT_GREY  1
#define LUT_BGREY 2
#define LUT_VGA   3
#define LUT_BCT   4
#define LUT_USER  5
#define LUT       6
#define LUT_8     LUT

#define RGB_RED   0
#define RGB_GREEN 1
#define RGB_BLUE  2
#define RGB       3

#define LUTENTRIES 16

#define BW_RED       15, 0, 15, 0, 15, 0, 15, 0, 15, 0, 15, 0, 15, 0, 15, 0
#define BW_GREEN     BW_RED
#define BW_BLUE      BW_RED

#define GREY_RED     0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
#define GREY_GREEN   GREY_RED
#define GREY_BLUE    GREY_RED

#define BGREY_RED    1, 0, 2, 8, 4, 3, 13, 11, 7, 6, 10, 12, 14, 5, 9, 15
#define BGREY_GREEN  BGREY_RED
#define BGREY_BLUE   BGREY_RED

#define VGA_RED      0, 0, 0, 0, 8, 8, 8, 12, 8,  0,  0,  0, 15, 15, 15, 15
#define VGA_GREEN    0, 0, 8, 8, 0, 0, 8, 12, 8,  0, 15, 15,  0,  0, 15, 15
#define VGA_BLUE     0, 8, 0, 8, 0, 8, 0, 12, 8, 15,  0, 15,  0, 15,  0, 15

#define BCT_RED      1,  7,  6, 15, 14, 3, 13, 11, 7, 13, 13, 15, 15, 5, 9, 15
#define BCT_GREEN    1,  7, 13, 12,  5, 3, 13, 11, 7, 14, 15, 15, 14, 5, 9, 15
#define BCT_BLUE     1, 14,  6,  8,  5, 3, 13, 11, 7, 15, 14, 12, 13, 5, 9, 15

#define USER_RED     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
#define USER_GREEN   USER_RED
#define USER_BLUE    USER_RED

static char mgrlut[LUT][RGB][LUTENTRIES] = {
  { { BW_RED },    { BW_GREEN },    { BW_BLUE } },
  { { GREY_RED },  { GREY_GREEN },  { GREY_BLUE } },
  { { BGREY_RED }, { BGREY_GREEN }, { BGREY_BLUE } },
  { { VGA_RED },   { VGA_GREEN },   { VGA_BLUE } },
  { { BCT_RED },   { BCT_GREEN },   { BCT_BLUE } },
  { { USER_RED },  { USER_GREEN },  { USER_BLUE } }
};

#endif				/* gdevmgr_INCLUDED */
