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/*
* This software is copyrighted as noted below. It may be freely copied,
* modified, and redistributed, provided that the copyright notice is
* preserved on all copies.
*
* There is no warranty or other guarantee of fitness for this software,
* it is provided solely "as is". Bug reports or fixes may be sent
* to the author, who may or may not act on them as he desires.
*
* You may not include this software in a program or other software product
* without supplying the source, or without informing the end-user that the
* source is available for no extra charge.
*
* If you modify this software, you should include a notice giving the
* name of the person performing the modification, the date of modification,
* and the reason for such modification.
*/
/*
* rle_put.h - Definitions and a few global variables for rle_putrow/putraw.
*
* Author: Spencer W. Thomas
* Computer Science Dept.
* University of Utah
* Date: Mon Aug 9 1982
* Copyright (c) 1982 Spencer W. Thomas
*
* $Id: rle_put.h,v 3.0.1.2 1992/02/27 21:14:35 spencer Exp $
*/
#include "rle.h"
#include "rle_config.h"
/* ****************************************************************
* Dispatch table for different output types.
*/
#ifdef __cplusplus /* Cfront 2.0 or g++ */
#ifndef c_plusplus
#define c_plusplus
#endif
extern "C" {
#endif
#ifdef c_plusplus
#define ARB_ARGS ...
#else
#define ARB_ARGS
#endif
typedef int rle_fn( ARB_ARGS );
struct rle_dispatch_tab {
CONST_DECL char *magic; /* magic type flags */
void (*setup)(rle_hdr * the_hdr); /* startup function */
void (*skipBlankLines)(unsigned int nblank, rle_hdr * the_hdr);
void(*setColor)(int c, rle_hdr * the_hdr);
void(*skipPixels)(unsigned int nskip, int last, int wasrun, rle_hdr * the_hdr);
void(*newScanLine)(int flag, rle_hdr * the_hdr);
void(*putdat)(rle_pixel * buf, unsigned int n, rle_hdr * the_hdr);
/* put a set of differing pixels */
void(*putrn)(int color, unsigned int n, int last, rle_hdr * the_hdr);
/* put a run all the same */
void (*blockHook)(rle_hdr * the_hdr);
/* hook called at start of new output block */
void(*putEof)(rle_hdr * the_hdr); /* write EOF marker (if possible) */
};
extern struct rle_dispatch_tab rle_DTable[];
/*
* These definitions presume the existence of a variable called
* "fileptr", declared "long * fileptr". *fileptr should be
* initialized to 0 before calling Setup().
* A pointer "the_hdr" declared "rle_hdr * the_hdr" is also
* presumed to exist.
*/
#define rle_magic (rle_DTable[(int)the_hdr->dispatch].magic)
#define Setup() (*rle_DTable[(int)the_hdr->dispatch].setup)(the_hdr)
#define SkipBlankLines(n) (*rle_DTable[(int)the_hdr->dispatch].skipBlankLines)(n, the_hdr)
#define SetColor(c) (*rle_DTable[(int)the_hdr->dispatch].setColor)(c, the_hdr)
#define SkipPixels(n, l, r) (*rle_DTable[(int)the_hdr->dispatch].skipPixels)(n,l,r, the_hdr)
#define NewScanLine(flag) (*rle_DTable[(int)the_hdr->dispatch].newScanLine)(flag, the_hdr)
#define putdata(buf, len) (*rle_DTable[(int)the_hdr->dispatch].putdat)(buf, len, the_hdr)
#define putrun(val, len, f) (*rle_DTable[(int)the_hdr->dispatch].putrn)(val,len,f, the_hdr)
#define BlockHook() (*rle_DTable[(int)the_hdr->dispatch].blockHook)(the_hdr)
#define PutEof() (*rle_DTable[(int)the_hdr->dispatch].putEof)(the_hdr)
void
DefaultBlockHook(rle_hdr * the_hdr);
/*
* States for run detection
*/
#define DATA 0
#define RUN1 1
#define RUN2 2
#define RUN3 3
#define RUN4 4
#define RUN5 5
#define RUN6 6
#define RUN7 7
#define INRUN -1
#ifdef __cplusplus
}
#endif
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