shithub: jbig2

ref: b82c5a1be026e14a63c6e3ede436acf9590a7610
dir: /jbig2dec.h/

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/*
    jbig2dec
    
    Copyright (c) 2001 artofcode LLC.
    
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    $Id: jbig2dec.h,v 1.3 2001/06/12 09:15:13 giles Exp $
*/

typedef unsigned char byte;
typedef int bool;
typedef unsigned int uint32;
typedef int int32;
typedef short int16;
typedef signed char int8;

#define TRUE 1
#define FALSE 0

typedef struct _Jbig2Ctx Jbig2Ctx;

int32
get_bytes (Jbig2Ctx *ctx, byte *buf, int size, int off);

int16
get_int16 (Jbig2Ctx *ctx, int off);

int32
get_int32 (Jbig2Ctx *ctx, int off);

/* The word stream design is a compromise between simplicity and
   trying to amortize the number of method calls. Each ::get_next_word
   invocation pulls 4 bytes from the stream, packed big-endian into a
   32 bit word. The offset argument is provided as a convenience. It
   begins at 0 and increments by 4 for each successive invocation. */
typedef struct _Jbig2WordStream Jbig2WordStream;

struct _Jbig2WordStream {
  uint32 (*get_next_word) (Jbig2WordStream *self, int offset);
};