Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/jbig2dec/jbig2_arith.h @ 21:2f43e400f144

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Provide an "all" target to build both the sdist and the wheel
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 10:28:53 +0200
parents b50eed0cc0ef
children
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1 /* Copyright (C) 2001-2023 Artifex Software, Inc.
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2 All Rights Reserved.
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4 This software is provided AS-IS with no warranty, either express or
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5 implied.
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7 This software is distributed under license and may not be copied,
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8 modified or distributed except as expressly authorized under the terms
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9 of the license contained in the file LICENSE in this distribution.
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11 Refer to licensing information at http://www.artifex.com or contact
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12 Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
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13 CA 94129, USA, for further information.
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14 */
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16 /*
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17 jbig2dec
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18 */
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20 #ifndef _JBIG2_ARITH_H
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21 #define _JBIG2_ARITH_H
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23 typedef struct _Jbig2ArithState Jbig2ArithState;
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25 /* An arithmetic coding context is stored as a single byte, with the
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26 index in the low order 7 bits (actually only 6 are used), and the
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27 MPS in the top bit. */
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28 typedef unsigned char Jbig2ArithCx;
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30 /* allocate and initialize a new arithmetic coding state */
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31 Jbig2ArithState *jbig2_arith_new(Jbig2Ctx *ctx, Jbig2WordStream *ws);
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33 /* decode a bit */
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34 /* Normally returns 0 or 1. May return negative in case of error. */
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35 int jbig2_arith_decode(Jbig2Ctx *ctx, Jbig2ArithState *as, Jbig2ArithCx *pcx);
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37 /* returns true if the end of the data stream has been reached (for sanity checks) */
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38 bool jbig2_arith_has_reached_marker(Jbig2ArithState *as);
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40 #endif /* _JBIG2_ARITH_H */