OpenJPEG: mqc.h Source File

OpenJPEG 1.5.1
00001 /*
00002  * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
00003  * Copyright (c) 2002-2007, Professor Benoit Macq
00004  * Copyright (c) 2001-2003, David Janssens
00005  * Copyright (c) 2002-2003, Yannick Verschueren
00006  * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
00007  * Copyright (c) 2005, Herve Drolon, FreeImage Team
00008  * All rights reserved.
00009  *
00010  * Redistribution and use in source and binary forms, with or without
00011  * modification, are permitted provided that the following conditions
00012  * are met:
00013  * 1. Redistributions of source code must retain the above copyright
00014  *    notice, this list of conditions and the following disclaimer.
00015  * 2. Redistributions in binary form must reproduce the above copyright
00016  *    notice, this list of conditions and the following disclaimer in the
00017  *    documentation and/or other materials provided with the distribution.
00018  *
00019  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
00020  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00021  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00022  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
00023  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00024  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00025  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00026  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00027  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00028  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00029  * POSSIBILITY OF SUCH DAMAGE.
00030  */
00031 
00032 #ifndef __MQC_H
00033 #define __MQC_H
00034 
00044 
00048 typedef struct opj_mqc_state {
00050         unsigned int qeval;
00052         int mps;
00054         struct opj_mqc_state *nmps;
00056         struct opj_mqc_state *nlps;
00057 } opj_mqc_state_t;
00058 
00059 #define MQC_NUMCTXS 19
00060 
00064 typedef struct opj_mqc {
00065         unsigned int c;
00066         unsigned int a;
00067         unsigned int ct;
00068         unsigned char *bp;
00069         unsigned char *start;
00070         unsigned char *end;
00071         opj_mqc_state_t *ctxs[MQC_NUMCTXS];
00072         opj_mqc_state_t **curctx;
00073 #ifdef MQC_PERF_OPT
00074         unsigned char *buffer;
00075 #endif
00076 } opj_mqc_t;
00077 
00080 /* ----------------------------------------------------------------------- */
00085 opj_mqc_t* mqc_create(void);
00090 void mqc_destroy(opj_mqc_t *mqc);
00096 int mqc_numbytes(opj_mqc_t *mqc);
00102 void mqc_resetstates(opj_mqc_t *mqc);
00110 void mqc_setstate(opj_mqc_t *mqc, int ctxno, int msb, int prob);
00116 void mqc_init_enc(opj_mqc_t *mqc, unsigned char *bp);
00122 #define mqc_setcurctx(mqc, ctxno)       (mqc)->curctx = &(mqc)->ctxs[(int)(ctxno)]
00123 
00128 void mqc_encode(opj_mqc_t *mqc, int d);
00133 void mqc_flush(opj_mqc_t *mqc);
00140 void mqc_bypass_init_enc(opj_mqc_t *mqc);
00148 void mqc_bypass_enc(opj_mqc_t *mqc, int d);
00155 int mqc_bypass_flush_enc(opj_mqc_t *mqc);
00160 void mqc_reset_enc(opj_mqc_t *mqc);
00166 int mqc_restart_enc(opj_mqc_t *mqc);
00171 void mqc_restart_init_enc(opj_mqc_t *mqc);
00176 void mqc_erterm_enc(opj_mqc_t *mqc);
00181 void mqc_segmark_enc(opj_mqc_t *mqc);
00188 void mqc_init_dec(opj_mqc_t *mqc, unsigned char *bp, int len);
00194 int mqc_decode(opj_mqc_t *const mqc);
00195 /* ----------------------------------------------------------------------- */
00199 
00200 #endif /* __MQC_H */