biaridecod.h

JM86的ccs代码,对目前正在做h.264移植的非常有用噢

/**********************************************************************
 * Software Copyright Licensing Disclaimer
 *
 * This software module was originally developed by contributors to the
 * course of the development of ISO/IEC 14496-10 for reference purposes
 * and its performance may not have been optimized.  This software
 * module is an implementation of one or more tools as specified by
 * ISO/IEC 14496-10.  ISO/IEC gives users free license to this software
 * module or modifications thereof. Those intending to use this software
 * module in products are advised that its use may infringe existing
 * patents.  ISO/IEC have no liability for use of this software module
 * or modifications thereof.  The original contributors retain full
 * rights to modify and use the code for their own purposes, and to
 * assign or donate the code to third-parties.
 *
 * This copyright notice must be included in all copies or derivative
 * works.  Copyright (c) ISO/IEC 2004.
 **********************************************************************/

/*!
 ***************************************************************************
 * \file
 *    biaridecod.h
 *
 * \brief
 *    Headerfile for binary arithmetic decoder routines
 *
 * \author
 *    Detlev Marpe,
 *    Gabi Bl鋞termann
 *    Copyright (C) 2000 HEINRICH HERTZ INSTITUTE All Rights Reserved.
 *
 * \date
 *    21. Oct 2000
 **************************************************************************
 */

#ifndef _BIARIDECOD_H_
#define _BIARIDECOD_H_


/************************************************************************
 * D e f i n i t i o n s
 ***********************************************************************
 */

void arideco_start_decoding(DecodingEnvironmentPtr eep, unsigned char *code_buffer, int firstbyte, int *code_len, int slice_type);
int  arideco_bits_read(DecodingEnvironmentPtr dep);
void arideco_done_decoding(DecodingEnvironmentPtr dep);
void biari_init_context (struct img_par *img, BiContextTypePtr ctx, const int* ini);
void rescale_cum_freq(BiContextTypePtr bi_ct);
unsigned int biari_decode_symbol(DecodingEnvironmentPtr dep, BiContextTypePtr bi_ct );
unsigned int biari_decode_symbol_eq_prob(DecodingEnvironmentPtr dep);
unsigned int biari_decode_final(DecodingEnvironmentPtr dep);

#endif  // BIARIDECOD_H_