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Diffstat (limited to 'include/cfitsio/compress.h')
| -rw-r--r-- | include/cfitsio/compress.h | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/include/cfitsio/compress.h b/include/cfitsio/compress.h deleted file mode 100644 index 7e3c406..0000000 --- a/include/cfitsio/compress.h +++ /dev/null @@ -1,212 +0,0 @@ -/* compress.h -- definitions for the decompression routines used in CFITSIO */ - -/* Blatantly copied and modified from the original gzip-1.2.4 source code. */ - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <ctype.h> - -/* 'near' is only relevant for 16-bit PC with small memory model */ -# define near - -#if defined(VAXC) || defined(VMS) -# define RECORD_IO 1 -#else -# define RECORD_IO 0 -#endif - -#define get_char() get_byte() - -/* gzip.h -- common declarations for all gzip modules */ - -#define OF(args) args -typedef void *voidp; - -#define memzero(s, n) memset ((voidp)(s), 0, (n)) - -typedef unsigned char uch; -typedef unsigned short ush; -typedef unsigned long ulg; - -/* Return codes from gzip */ -#define OK 0 -#define ERROR 1 -#define WARNING 2 - -/* Compression methods (see algorithm.doc) */ -#define STORED 0 -#define COMPRESSED 1 -#define PACKED 2 -#define LZHED 3 -/* methods 4 to 7 reserved */ -#define DEFLATED 8 -#define MAX_METHODS 9 - -#define INBUFSIZ 0x8000 /* input buffer size */ -#define INBUF_EXTRA 64 /* required by unlzw() */ -#define OUTBUFSIZ 16384 /* output buffer size */ -#define OUTBUF_EXTRA 2048 /* required by unlzw() */ -#define DIST_BUFSIZE 0x8000 /* buffer for distances, see trees.c */ -#define WSIZE 0x8000 /* window size--must be a power of two, and */ - -#define DECLARE(type, array, size) type array[size] - -#define tab_suffix window -#define tab_prefix prev /* hash link (see deflate.c) */ -#define head (prev+WSIZE) /* hash head (see deflate.c) */ - -#define PACK_MAGIC "\037\036" /* Magic header for packed files */ -#define GZIP_MAGIC "\037\213" /* Magic header for gzip files, 1F 8B */ -#define OLD_GZIP_MAGIC "\037\236" /* Magic header for gzip 0.5 = freeze 1.x */ -#define LZH_MAGIC "\037\240" /* Magic header for SCO LZH Compress files*/ -#define LZW_MAGIC "\037\235" /* Magic header for lzw files, 1F 9D */ -#define PKZIP_MAGIC "\120\113\003\004" /* Magic header for pkzip files */ - -/* gzip flag byte */ -#define ASCII_FLAG 0x01 /* bit 0 set: file probably ascii text */ -#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */ -#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */ -#define ORIG_NAME 0x08 /* bit 3 set: original file name present */ -#define COMMENT 0x10 /* bit 4 set: file comment present */ -#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */ -#define RESERVED 0xC0 /* bit 6,7: reserved */ - -#define MIN_MATCH 3 -#define MAX_MATCH 258 -#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1) -#define MAX_DIST (WSIZE-MIN_LOOKAHEAD) -#define translate_eol 0 /* no option -a yet */ - -#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf(0)) -#define try_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf(1)) -#define put_ubyte(c) {window[outcnt++]=(uch)(c); if (outcnt==WSIZE)\ - flush_window();} - -/* Macros for getting two-byte and four-byte header values */ -#define SH(p) ((ush)(uch)((p)[0]) | ((ush)(uch)((p)[1]) << 8)) -#define LG(p) ((ulg)(SH(p)) | ((ulg)(SH((p)+2)) << 16)) - -/* Diagnostic functions */ -# define Assert(cond,msg) -# define Trace(x) -# define Tracev(x) -# define Tracevv(x) -# define Tracec(c,x) -# define Tracecv(c,x) - -/* lzw.h -- define the lzw functions. */ - -#ifndef BITS -# define BITS 16 -#endif -#define INIT_BITS 9 /* Initial number of bits per code */ -#define BIT_MASK 0x1f /* Mask for 'number of compression bits' */ -#define BLOCK_MODE 0x80 -#define LZW_RESERVED 0x60 /* reserved bits */ -#define CLEAR 256 /* flush the dictionary */ -#define FIRST (CLEAR+1) /* first free entry */ - -/* prototypes */ - -#define local static -void ffpmsg(const char *err_message); - -local int get_method OF((FILE *in)); - -local ulg updcrc OF((uch *s, unsigned n)); -local int fill_inbuf OF((int eof_ok)); -local void flush_outbuf OF((void)); -local void flush_window OF((void)); -local void write_buf OF((voidp buf, unsigned cnt)); -local void error OF((char *m)); -local ulg flush_block OF((char *buf, ulg stored_len, int eof)); -typedef int file_t; /* Do not use stdio */ -#define NO_FILE (-1) /* in memory compression */ -local int file_read OF((char *buf, unsigned size)); -local void send_bits OF((int value, int length)); -local unsigned bi_reverse OF((unsigned value, int length)); -local void bi_windup OF((void)); -local void copy_block OF((char *buf, unsigned len, int header)); -local int (*read_buf) OF((char *buf, unsigned size)); -local void lm_init OF((int pack_level, ush *flags)); -local ulg deflate OF((void)); -local void ct_init OF((ush *attr, int *method)); -local int ct_tally OF((int dist, int lc)); -local void bi_init OF((file_t zipfile)); - -#define put_byte(c) {outbuf[outcnt++]=(uch)(c); if (outcnt==OUTBUFSIZ)\ - flush_outbuf();} - -/* Output a 16 bit value, lsb first */ -#define put_short(w) \ -{ if (outcnt < OUTBUFSIZ-2) { \ - outbuf[outcnt++] = (uch) ((w) & 0xff); \ - outbuf[outcnt++] = (uch) ((ush)(w) >> 8); \ - } else { \ - put_byte((uch)((w) & 0xff)); \ - put_byte((uch)((ush)(w) >> 8)); \ - } \ -} - -/* Output a 32 bit value to the bit stream, lsb first */ -#define put_long(n) { \ - put_short((n) & 0xffff); \ - put_short(((ulg)(n)) >> 16); \ -} - -#define seekable() 0 /* force sequential output */ - -/* io.c */ -local void fillbuf OF((int n)); -local unsigned getbits OF((int n)); -local void init_getbits OF((void)); - -/* maketbl.c */ -local void make_table OF((int nchar, uch bitlen[], - int tablebits, ush table[])); - -/* huf.c */ -local void read_pt_len OF((int nn, int nbit, int i_special)); -local void read_c_len OF((void)); -local unsigned decode_c OF((void)); -local unsigned decode_p OF((void)); -local void huf_decode_start OF((void)); - -/* decode.c */ -local void decode_start OF((void)); -local unsigned decode OF((unsigned count, uch buffer[])); - -local int unlzh OF((FILE *in, FILE *out)); -local int unlzw OF((FILE *in, FILE *out)); - -local void read_tree OF((void)); -local void build_tree_unpack OF((void)); - -local int unpack OF((FILE *in, FILE *out)); -local int check_zipfile OF((FILE *in)); -local int unzip OF((FILE *in, FILE *out)); - -int (*work) OF((FILE *infile, FILE *outfile)) = unzip; /* function to call */ - -/* inflate.c */ -struct huft { - uch e; /* number of extra bits or operation */ - uch b; /* number of bits in this code or subcode */ - union { - ush n; /* literal, length base, or distance base */ - struct huft *t; /* pointer to next level of table */ - } v; -}; - -local int huft_build OF((unsigned *, unsigned, unsigned, ush *, ush *, - struct huft **, int *)); -local int huft_free OF((struct huft *)); -local int inflate_codes OF((struct huft *, struct huft *, int, int)); -local int inflate_stored OF((void)); -local int inflate_fixed OF((void)); -local int inflate_dynamic OF((void)); -local int inflate_block OF((int *)); -local int inflate OF((void)); - -/* end of compress.h include file */ |