1 /* 2 * This software is copyrighted as noted below. It may be freely copied, 3 * modified, and redistributed, provided that the copyright notice is 4 * preserved on all copies. 5 * 6 * There is no warranty or other guarantee of fitness for this software, 7 * it is provided solely "as is". Bug reports or fixes may be sent 8 * to the author, who may or may not act on them as he desires. 9 * 10 * You may not include this software in a program or other software product 11 * without supplying the source, or without informing the end-user that the 12 * source is available for no extra charge. 13 * 14 * If you modify this software, you should include a notice giving the 15 * name of the person performing the modification, the date of modification, 16 * and the reason for such modification. 17 */ 18 /* 19 * rle_put.h - Definitions and a few global variables for rle_putrow/putraw. 20 * 21 * Author: Spencer W. Thomas 22 * Computer Science Dept. 23 * University of Utah 24 * Date: Mon Aug 9 1982 25 * Copyright (c) 1982 Spencer W. Thomas 26 * 27 * $Id: rle_put.h,v 3.0.1.2 1992/02/27 21:14:35 spencer Exp $ 28 */ 29 30 #include "rle.h" 31 32 /* **************************************************************** 33 * Dispatch table for different output types. 34 */ 35 #ifdef __cplusplus /* Cfront 2.0 or g++ */ 36 #ifndef c_plusplus 37 #define c_plusplus 38 #endif 39 extern "C" { 40 #endif 41 42 43 #ifdef c_plusplus 44 #define ARB_ARGS ... 45 #else 46 #define ARB_ARGS 47 #endif 48 49 typedef int rle_fn( ARB_ARGS ); 50 51 struct rle_dispatch_tab { 52 CONST_DECL char *magic; /* magic type flags */ 53 rle_fn *setup, /* startup function */ 54 *skipBlankLines, 55 *setColor, 56 *skipPixels, 57 *newScanLine, 58 *putdat, /* put a set of differing pixels */ 59 *putrn, /* put a run all the same */ 60 *blockHook, /* hook called at start of new */ 61 /* output block */ 62 *putEof; /* write EOF marker (if possible) */ 63 }; 64 65 extern struct rle_dispatch_tab rle_DTable[]; 66 67 /* 68 * These definitions presume the existence of a variable called 69 * "fileptr", declared "long * fileptr". *fileptr should be 70 * initialized to 0 before calling Setup(). 71 * A pointer "the_hdr" declared "rle_hdr * the_hdr" is also 72 * presumed to exist. 73 */ 74 #define rle_magic (rle_DTable[(int)the_hdr->dispatch].magic) 75 #define Setup() (*rle_DTable[(int)the_hdr->dispatch].setup)(the_hdr) 76 #define SkipBlankLines(n) (*rle_DTable[(int)the_hdr->dispatch].skipBlankLines)(n, the_hdr) 77 #define SetColor(c) (*rle_DTable[(int)the_hdr->dispatch].setColor)(c, the_hdr) 78 #define SkipPixels(n, l, r) (*rle_DTable[(int)the_hdr->dispatch].skipPixels)(n,l,r, the_hdr) 79 #define NewScanLine(flag) (*rle_DTable[(int)the_hdr->dispatch].newScanLine)(flag, the_hdr) 80 #define putdata(buf, len) (*rle_DTable[(int)the_hdr->dispatch].putdat)(buf, len, the_hdr) 81 #define putrun(val, len, f) (*rle_DTable[(int)the_hdr->dispatch].putrn)(val,len,f, the_hdr) 82 #define BlockHook() (*rle_DTable[(int)the_hdr->dispatch].blockHook)(the_hdr) 83 #define PutEof() (*rle_DTable[(int)the_hdr->dispatch].putEof)(the_hdr) 84 85 /* 86 * States for run detection 87 */ 88 #define DATA 0 89 #define RUN1 1 90 #define RUN2 2 91 #define RUN3 3 92 #define RUN4 4 93 #define RUN5 5 94 #define RUN6 6 95 #define RUN7 7 96 #define INRUN -1 97 98 #ifdef __cplusplus 99 } 100 #endif 101