/*

 * The copyright in this software is being made available under the 2-clauses

 * BSD License, included below. This software may be subject to other third

 * party and contributor rights, including patent rights, and no such rights

 * are granted under this license.

 *

 * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe

 * Copyright (c) 2005, Herve Drolon, FreeImage Team

 * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'

 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

#include "opj_includes.h"

/*

==========================================================

   local functions

==========================================================

*/

/*

==========================================================

   RAW encoding interface

==========================================================

*/

opj_raw_t* raw_create()

{

    opj_raw_t *raw = (opj_raw_t*)opj_malloc(sizeof(opj_raw_t));

    return raw;

}

void raw_destroy(opj_raw_t *raw)

{

    if (raw) {

        opj_free(raw);

    }

}

int raw_numbytes(opj_raw_t *raw)

{

    return raw->bp - raw->start;

}

void raw_init_dec(opj_raw_t *raw, unsigned char *bp, int len)

{

    raw->start = bp;

    raw->lenmax = len;

    raw->len = 0;

    raw->c = 0;

    raw->ct = 0;

}

int raw_decode(opj_raw_t *raw)

{

    int d;

    if (raw->ct == 0) {

        raw->ct = 8;

        if (raw->len == raw->lenmax) {

            raw->c = 0xff;

        } else {

            if (raw->c == 0xff) {

                raw->ct = 7;

            }

            raw->c = *(raw->start + raw->len);

            raw->len++;

        }

    }

    raw->ct--;

    d = (raw->c >> raw->ct) & 0x01;

    return d;

}