ref: 808d2dd8d5a549f63af69688752b6171529e687f
dir: /jbig2_arith.h/
/* Copyright (C) 2001-2018 Artifex Software, Inc.
All Rights Reserved.
This software is provided AS-IS with no warranty, either express or
implied.
This software is distributed under license and may not be copied,
modified or distributed except as expressly authorized under the terms
of the license contained in the file LICENSE in this distribution.
Refer to licensing information at http://www.artifex.com or contact
Artifex Software, Inc., 1305 Grant Avenue - Suite 200, Novato,
CA 94945, U.S.A., +1(415)492-9861, for further information.
*/
/*
jbig2dec
*/
typedef struct _Jbig2ArithState Jbig2ArithState;
/* An arithmetic coding context is stored as a single byte, with the
index in the low order 7 bits (actually only 6 are used), and the
MPS in the top bit. */
typedef unsigned char Jbig2ArithCx;
/* allocate and initialize a new arithmetic coding state */
Jbig2ArithState *jbig2_arith_new(Jbig2Ctx *ctx, Jbig2WordStream *ws);
/* decode a bit */
bool jbig2_arith_decode(Jbig2ArithState *as, Jbig2ArithCx *pcx, int *code);
/* returns true if the end of the data stream has been reached (for sanity checks) */
bool jbig2_arith_has_reached_marker(Jbig2ArithState *as);