root/3rdparty/libjasper/jpc_mqcod.h

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INCLUDED FROM


/*
 * Copyright (c) 1999-2000 Image Power, Inc. and the University of
 *   British Columbia.
 * Copyright (c) 2001-2003 Michael David Adams.
 * All rights reserved.
 */

/* __START_OF_JASPER_LICENSE__
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 * JasPer License Version 2.0
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/*
 * MQ Arithmetic Coder
 *
 * $Id: jpc_mqcod.h,v 1.2 2008-05-26 09:40:52 vp153 Exp $
 */

#ifndef JPC_MQCOD_H
#define JPC_MQCOD_H

/******************************************************************************\
* Includes.
\******************************************************************************/

#include "jasper/jas_types.h"

/******************************************************************************\
* Types.
\******************************************************************************/

/*
 * MQ coder context information.
 */

typedef struct {

    /* The most probable symbol (MPS). */
    int mps;

    /* The state index. */
    int_fast16_t ind;

} jpc_mqctx_t;

/*
 * MQ coder state table entry.
 */

typedef struct jpc_mqstate_s {

    /* The Qe value. */
    uint_fast16_t qeval;

    /* The MPS. */
    int mps;

    /* The NMPS state. */
    struct jpc_mqstate_s *nmps;

    /* The NLPS state. */
    struct jpc_mqstate_s *nlps;

} jpc_mqstate_t;

/******************************************************************************\
* Data.
\******************************************************************************/

/* The state table for the MQ coder. */
extern jpc_mqstate_t jpc_mqstates[];

#endif

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