/usr/lib/xemacs-21.4.24/x86_64-linux-gnu/include/imgproc.h is in xemacs21-bin 21.4.24-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | /* Image processing aux functions header file
Copyright (C) 1998 Jareth Hein
This file is a part of XEmacs
XEmacs is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
XEmacs is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with XEmacs; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef INCLUDED_imgproc_h_
#define INCLUDED_imgproc_h_
/* Synched up with: Not in FSF. */
/* Original author: Jareth Hein */
#define MAX_CMAP_SIZE 256
#define COLOR_DEPTH 8
#define MAX_COLOR 256
#define B_DEPTH 5 /* # bits/pixel to use */
#define B_LEN (1L<<B_DEPTH)
#define C_DEPTH 2
#define C_LEN (1L<<C_DEPTH) /* # cells/color to use */
#define COLOR_SHIFT (COLOR_DEPTH-B_DEPTH)
typedef struct colorbox {
struct colorbox *next, *prev;
int rmin, rmax;
int gmin, gmax;
int bmin, bmax;
int total;
} Colorbox;
typedef struct {
int num_ents;
int entries[MAX_CMAP_SIZE][2];
} C_cell;
typedef struct {
unsigned short rm[MAX_CMAP_SIZE], gm[MAX_CMAP_SIZE], bm[MAX_CMAP_SIZE]; /* map values */
int um[MAX_CMAP_SIZE]; /* usage counts for each mapentry */
int histogram[B_LEN][B_LEN][B_LEN];
int num_active_colors;
Colorbox *freeboxes; /* used and freed internally */
Colorbox *usedboxes; /* used and freed internally */
C_cell **ColorCells; /* used and freed internally */
} quant_table;
#define QUANT_GET_COLOR(qt,r,g,b) (qt->histogram[r>>COLOR_SHIFT][g>>COLOR_SHIFT][b>>COLOR_SHIFT])
quant_table *build_EImage_quantable(unsigned char *eimage, int width, int height, int num_colors);
#endif /* INCLUDED_imgproc_h_ */
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