1/* 2 * jconfig.txt 3 * 4 * This file was part of the Independent JPEG Group's software: 5 * Copyright (C) 1991-1994, Thomas G. Lane. 6 * It was modified by The libjpeg-turbo Project to include only code relevant 7 * to libjpeg-turbo. 8 * For conditions of distribution and use, see the accompanying README.ijg 9 * file. 10 * 11 * This file documents the configuration options that are required to 12 * customize the JPEG software for a particular system. 13 * 14 * The actual configuration options for a particular installation are stored 15 * in jconfig.h. On many machines, jconfig.h can be generated automatically 16 * or copied from one of the "canned" jconfig files that we supply. But if 17 * you need to generate a jconfig.h file by hand, this file tells you how. 18 * 19 * DO NOT EDIT THIS FILE --- IT WON'T ACCOMPLISH ANYTHING. 20 * EDIT A COPY NAMED JCONFIG.H. 21 */ 22 23 24/* 25 * These symbols indicate the properties of your machine or compiler. 26 * #define the symbol if yes, #undef it if no. 27 */ 28 29/* Define "boolean" as unsigned char, not int, on Windows systems. 30 */ 31#ifdef _WIN32 32#ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */ 33typedef unsigned char boolean; 34#endif 35#define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */ 36#endif 37 38 39/* 40 * The following options affect code selection within the JPEG library, 41 * but they don't need to be visible to applications using the library. 42 * To minimize application namespace pollution, the symbols won't be 43 * defined unless JPEG_INTERNALS has been defined. 44 */ 45 46#ifdef JPEG_INTERNALS 47 48/* Define this if your compiler implements ">>" on signed values as a logical 49 * (unsigned) shift; leave it undefined if ">>" is a signed (arithmetic) shift, 50 * which is the normal and rational definition. 51 */ 52#undef RIGHT_SHIFT_IS_UNSIGNED 53 54 55#endif /* JPEG_INTERNALS */ 56 57 58/* 59 * The remaining options do not affect the JPEG library proper, 60 * but only the sample applications cjpeg/djpeg (see cjpeg.c, djpeg.c). 61 * Other applications can ignore these. 62 */ 63 64#ifdef JPEG_CJPEG_DJPEG 65 66/* These defines indicate which image (non-JPEG) file formats are allowed. */ 67 68#define BMP_SUPPORTED /* BMP image file format */ 69#define GIF_SUPPORTED /* GIF image file format */ 70#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ 71#define TARGA_SUPPORTED /* Targa image file format */ 72 73/* Define this if you want to name both input and output files on the command 74 * line, rather than using stdout and optionally stdin. You MUST do this if 75 * your system can't cope with binary I/O to stdin/stdout. See comments at 76 * head of cjpeg.c or djpeg.c. 77 */ 78#undef TWO_FILE_COMMANDLINE 79 80/* By default, we open image files with fopen(..., "rb") or fopen(..., "wb"). 81 * This is necessary on systems that distinguish text files from binary files, 82 * and is harmless on most systems that don't. If you have one of the rare 83 * systems that complains about the "b" spec, define this symbol. 84 */ 85#undef DONT_USE_B_MODE 86 87/* Define this if you want percent-done progress reports from cjpeg/djpeg. 88 */ 89#undef PROGRESS_REPORT 90 91 92#endif /* JPEG_CJPEG_DJPEG */ 93