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      1 /* android jconfig.h */
      2 /*
      3  * jconfig.doc
      4  *
      5  * Copyright (C) 1991-1994, Thomas G. Lane.
      6  * This file is part of the Independent JPEG Group's software.
      7  * For conditions of distribution and use, see the accompanying README file.
      8  *
      9  * This file documents the configuration options that are required to
     10  * customize the JPEG software for a particular system.
     11  *
     12  * The actual configuration options for a particular installation are stored
     13  * in jconfig.h.  On many machines, jconfig.h can be generated automatically
     14  * or copied from one of the "canned" jconfig files that we supply.  But if
     15  * you need to generate a jconfig.h file by hand, this file tells you how.
     16  *
     17  * DO NOT EDIT THIS FILE --- IT WON'T ACCOMPLISH ANYTHING.
     18  * EDIT A COPY NAMED JCONFIG.H.
     19  */
     20 
     21 
     22 /*
     23  * These symbols indicate the properties of your machine or compiler.
     24  * #define the symbol if yes, #undef it if no.
     25  */
     26 
     27 /* Does your compiler support function prototypes?
     28  * (If not, you also need to use ansi2knr, see install.doc)
     29  */
     30 #define HAVE_PROTOTYPES
     31 
     32 /* Does your compiler support the declaration "unsigned char" ?
     33  * How about "unsigned short" ?
     34  */
     35 #define HAVE_UNSIGNED_CHAR
     36 #define HAVE_UNSIGNED_SHORT
     37 
     38 /* Define "void" as "char" if your compiler doesn't know about type void.
     39  * NOTE: be sure to define void such that "void *" represents the most general
     40  * pointer type, e.g., that returned by malloc().
     41  */
     42 /* #define void char */
     43 
     44 /* Define "const" as empty if your compiler doesn't know the "const" keyword.
     45  */
     46 /* #define const */
     47 
     48 /* Define this if an ordinary "char" type is unsigned.
     49  * If you're not sure, leaving it undefined will work at some cost in speed.
     50  * If you defined HAVE_UNSIGNED_CHAR then the speed difference is minimal.
     51  */
     52 #undef CHAR_IS_UNSIGNED
     53 
     54 /* Define this if your system has an ANSI-conforming <stddef.h> file.
     55  */
     56 #define HAVE_STDDEF_H
     57 
     58 /* Define this if your system has an ANSI-conforming <stdlib.h> file.
     59  */
     60 #define HAVE_STDLIB_H
     61 
     62 /* Define this if your system does not have an ANSI/SysV <string.h>,
     63  * but does have a BSD-style <strings.h>.
     64  */
     65 #undef NEED_BSD_STRINGS
     66 
     67 /* Define this if your system does not provide typedef size_t in any of the
     68  * ANSI-standard places (stddef.h, stdlib.h, or stdio.h), but places it in
     69  * <sys/types.h> instead.
     70  */
     71 #undef NEED_SYS_TYPES_H
     72 
     73 /* For 80x86 machines, you need to define NEED_FAR_POINTERS,
     74  * unless you are using a large-data memory model or 80386 flat-memory mode.
     75  * On less brain-damaged CPUs this symbol must not be defined.
     76  * (Defining this symbol causes large data structures to be referenced through
     77  * "far" pointers and to be allocated with a special version of malloc.)
     78  */
     79 #undef NEED_FAR_POINTERS
     80 
     81 /* Define this if your linker needs global names to be unique in less
     82  * than the first 15 characters.
     83  */
     84 #undef NEED_SHORT_EXTERNAL_NAMES
     85 
     86 /* Although a real ANSI C compiler can deal perfectly well with pointers to
     87  * unspecified structures (see "incomplete types" in the spec), a few pre-ANSI
     88  * and pseudo-ANSI compilers get confused.  To keep one of these bozos happy,
     89  * define INCOMPLETE_TYPES_BROKEN.  This is not recommended unless you
     90  * actually get "missing structure definition" warnings or errors while
     91  * compiling the JPEG code.
     92  */
     93 #undef INCOMPLETE_TYPES_BROKEN
     94 
     95 
     96 /*
     97  * The following options affect code selection within the JPEG library,
     98  * but they don't need to be visible to applications using the library.
     99  * To minimize application namespace pollution, the symbols won't be
    100  * defined unless JPEG_INTERNALS has been defined.
    101  */
    102 
    103 #ifdef JPEG_INTERNALS
    104 
    105 /* Define this if your compiler implements ">>" on signed values as a logical
    106  * (unsigned) shift; leave it undefined if ">>" is a signed (arithmetic) shift,
    107  * which is the normal and rational definition.
    108  */
    109 #undef RIGHT_SHIFT_IS_UNSIGNED
    110 
    111 
    112 #endif /* JPEG_INTERNALS */
    113 
    114 
    115 /*
    116  * The remaining options do not affect the JPEG library proper,
    117  * but only the sample applications cjpeg/djpeg (see cjpeg.c, djpeg.c).
    118  * Other applications can ignore these.
    119  */
    120 
    121 #ifdef JPEG_CJPEG_DJPEG
    122 
    123 /* These defines indicate which image (non-JPEG) file formats are allowed. */
    124 
    125 #define BMP_SUPPORTED		/* BMP image file format */
    126 #define GIF_SUPPORTED		/* GIF image file format */
    127 #define PPM_SUPPORTED		/* PBMPLUS PPM/PGM image file format */
    128 #undef RLE_SUPPORTED		/* Utah RLE image file format */
    129 #define TARGA_SUPPORTED		/* Targa image file format */
    130 
    131 /* Define this if you want to name both input and output files on the command
    132  * line, rather than using stdout and optionally stdin.  You MUST do this if
    133  * your system can't cope with binary I/O to stdin/stdout.  See comments at
    134  * head of cjpeg.c or djpeg.c.
    135  */
    136 #undef TWO_FILE_COMMANDLINE
    137 
    138 /* Define this if your system needs explicit cleanup of temporary files.
    139  * This is crucial under MS-DOS, where the temporary "files" may be areas
    140  * of extended memory; on most other systems it's not as important.
    141  */
    142 #undef NEED_SIGNAL_CATCHER
    143 
    144 /* By default, we open image files with fopen(...,"rb") or fopen(...,"wb").
    145  * This is necessary on systems that distinguish text files from binary files,
    146  * and is harmless on most systems that don't.  If you have one of the rare
    147  * systems that complains about the "b" spec, define this symbol.
    148  */
    149 #undef DONT_USE_B_MODE
    150 
    151 /* Define this if you want percent-done progress reports from cjpeg/djpeg.
    152  */
    153 #undef PROGRESS_REPORT
    154 
    155 
    156 #endif /* JPEG_CJPEG_DJPEG */
    157