/* image.h: * * portable image type declarations * * jim frost 10.02.89 * * Copyright 1989 Jim Frost.  See included file "copyright.h" for complete * copyright information. *//* @(#)image.h	1.1  10/13/90 */#include "copyright.h"#include <stdio.h>typedef unsigned long  Pixel;     /* what X thinks a pixel is */typedef unsigned short Intensity; /* what X thinks an RGB intensity is */typedef unsigned char  byte;      /* byte type */typedef struct {  unsigned int  type;  FILE         *stream;} ZFILE;#define ZSTANDARD 0#define ZPIPE     1typedef struct rgbmap {  unsigned int  size;  /* size of RGB map */  unsigned int  used;  /* number of colors used in RGB map */  Intensity    *red;   /* color values in X style */  Intensity    *green;  Intensity    *blue;} RGBMap;/* image structure */typedef struct {  char         *title;  /* name of image */  unsigned int  type;   /* type of image */  RGBMap        rgb;    /* RGB map of image if IRGB type */  unsigned int  width;  /* width of image in pixels */  unsigned int  height; /* height of image in pixels */  unsigned int  depth;  /* depth of image in bits if IRGB type */  unsigned int  pixlen; /* length of pixel if IRGB type */  byte         *data;   /* data rounded to full byte for each row */} Image;#define IBITMAP 0 /* image is a bitmap */#define IRGB    1 /* image is RGB */#define BITMAPP(IMAGE) ((IMAGE)->type == IBITMAP)#define RGBP(IMAGE)    ((IMAGE)->type == IRGB)/* function declarations */Image *clip(); /* clip.c */void brighten(); /* bright.c */void compress(); /* compress.c */Image *dither(); /* dither.c */void fill(); /* fill.c */void fold(); /* fold.c */Image *halftone(); /* halftone.c */Image *loadImage(); /* imagetypes.c */void   identifyImage();void   goodImage();void merge(); /* merge.c */char  *dupString(); /* new.c */Image *newBitImage();Image *newRGBImage();void   freeImage();void   freeImageData();void   newRGBMapData();void   freeRGBMapData();byte  *lcalloc();byte  *lmalloc();void   lfree();void reduceRGBMap(); /* reduce.c */void reduce();unsigned long memToVal(); /* value.c */void          valToMem();unsigned long memToValLSB();void          valToMemLSB();Image *zoom(); /* zoom.c */