harvey/sys/src/cmd/gs/src/szlibx.h

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*/

/*$Id: szlibx.h,v 1.2 2000/09/19 19:00:51 lpd Exp $ */
/* zlib filter state definition */

#ifndef szlibx_INCLUDED
#  define szlibx_INCLUDED

/* Define an opaque type for the dynamic part of the state. */
typedef struct zlib_dynamic_state_s zlib_dynamic_state_t;

/* Define the stream state structure. */
typedef struct stream_zlib_state_s {
    stream_state_common;
    /* Parameters - compression and decompression */
    int windowBits;
    bool no_wrapper;		/* omit wrapper and checksum */
    /* Parameters - compression only */
    int level;			/* effort level */
    int method;
    int memLevel;
    int strategy;
    /* Dynamic state */
    zlib_dynamic_state_t *dynamic;
} stream_zlib_state;

/*
 * The state descriptor is public only to allow us to split up
 * the encoding and decoding filters.
 */
extern_st(st_zlib_state);
#define public_st_zlib_state()	/* in szlibc.c */\
  gs_public_st_ptrs1(st_zlib_state, stream_zlib_state,\
    "zlibEncode/Decode state", zlib_state_enum_ptrs, zlib_state_reloc_ptrs,\
    dynamic)
extern const stream_template s_zlibD_template;
extern const stream_template s_zlibE_template;

/* Shared procedures */
stream_proc_set_defaults(s_zlib_set_defaults);

#endif /* szlibx_INCLUDED */