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/*
* Copyright (c) 2001-2002, David Janssens
* Copyright (c) 2002-2003, Yannick Verschueren
* Copyright (c) 2002-2003, 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.
*/
#ifndef __MQC_H
#define __MQC_H
/*
* Return the number of bytes written/read since initialisation
*/
int mqc_numbytes();
/*
* Reset the states of all the context of the coder/decoder
* (each context is set to a state where 0 and 1 are more or less equiprobable)
*/
void mqc_resetstates();
/*
* Set the state of a particular context
* ctxno: number that identifies the context
* msb: the MSB of the new state of the context
* prob: number that identifies the probability of the symbols for the new state of the context
*/
void mqc_setstate(int ctxno, int msb, int prob);
/*
* Initialize the encoder
* bp: pointer to the start of the buffer where the bytes will be written
*/
void mqc_init_enc(unsigned char *bp);
/*
* Set the current context used for coding/decoding
* ctxno: number that identifies the context
*/
void mqc_setcurctx(int ctxno);
/*
* Encode a bit
* d: bit to encode (0 or 1)
*/
void mqc_encode(int d);
/*
* Flush the encoder, so that all remaining data is written
*/
void mqc_flush();
/*
* BYPASS mode switch
*/
void mqc_bypass_init_enc();
/*
* BYPASS mode switch
*/
void mqc_bypass_enc(int d);
/*
* BYPASS mode switch
*/
int mqc_bypass_flush_enc();
/*
* RESET mode switch
*/
void mqc_reset_enc();
/*
* RESTART mode switch (TERMALL)
*/
int mqc_restart_enc();
/*
* RESTART mode switch (TERMALL)
*/
void mqc_restart_init_enc();
/*
* ERTERM mode switch (PTERM)
*/
void mqc_erterm_enc();
/*
* SEGMARK mode switch (SEGSYM)
*/
void mqc_segmark_enc();
/*
* Initialize the decoder
* bp: pointer to the start of the buffer from which the bytes will be read
* len: length of the input buffer
*/
void mqc_init_dec(unsigned char *bp, int len);
/*
* Decode a bit (returns 0 or 1)
*/
int mqc_decode();
#endif
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