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/*===========================================================================*
* bitio.h *
* *
* bitwise input/output *
* *
*===========================================================================*/
/*
* Copyright (c) 1995 The Regents of the University of California.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose, without fee, and without written agreement is
* hereby granted, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
/*
* $Header: /n/charlie-brown/project/mm/mpeg/mpeg_dist/mpeg_encode/headers/RCS/bitio.h,v 1.8 1995/01/19 23:54:37 eyhung Exp $
* $Log: bitio.h,v $
* Revision 1.8 1995/01/19 23:54:37 eyhung
* Changed copyrights
*
* Revision 1.7 1994/11/12 02:12:14 keving
* nothing
*
* Revision 1.6 1993/07/22 22:24:23 keving
* nothing
*
* Revision 1.5 1993/07/09 00:17:23 keving
* nothing
*
* Revision 1.4 1993/06/03 21:08:53 keving
* nothing
*
* Revision 1.3 1993/01/18 10:20:02 dwallach
* *** empty log message ***
*
* Revision 1.2 1993/01/18 10:17:29 dwallach
* RCS headers installed, code indented uniformly
*
* Revision 1.2 1993/01/18 10:17:29 dwallach
* RCS headers installed, code indented uniformly
*
*/
#ifndef BIT_IO_INCLUDED
#define BIT_IO_INCLUDED
/*==============*
* HEADER FILES *
*==============*/
#include "general.h"
#include "ansi.h"
/*===========*
* CONSTANTS *
*===========*/
#define WORDS_PER_BUCKET 128
#define MAXBITS_PER_BUCKET (WORDS_PER_BUCKET * 32)
#define MAX_BUCKETS 128
#define MAX_BITS MAX_BUCKETS*MAXBITS_PER_BUCKET
/*=======================*
* STRUCTURE DEFINITIONS *
*=======================*/
typedef struct bitBucket {
struct bitBucket *nextPtr;
uint32 bits[WORDS_PER_BUCKET];
int bitsleft, bitsleftcur, currword;
} ActualBucket;
typedef struct _BitBucket {
int totalbits;
int cumulativeBits;
int bitsWritten;
FILE *filePtr;
ActualBucket *firstPtr;
ActualBucket *lastPtr;
} BitBucket;
/*========*
* MACROS *
*========*/
#define SET_ITH_BIT(bits, i) (bits |= (1 << (i)))
#define GET_ITH_BIT(bits, i) (bits & (1 << (i)))
/*===============================*
* EXTERNAL PROCEDURE prototypes *
*===============================*/
void Bitio_Free _ANSI_ARGS_((BitBucket *bbPtr));
void Bitio_Write _ANSI_ARGS_((BitBucket *bbPtr, uint32 bits, int nbits));
void Bitio_BytePad _ANSI_ARGS_((BitBucket *bbPtr));
BitBucket *Bitio_New _ANSI_ARGS_((FILE *filePtr));
void Bitio_Flush _ANSI_ARGS_((BitBucket *bbPtr));
void Bitio_WriteToSocket _ANSI_ARGS_((BitBucket *bbPtr, int socket));
#endif /* BIT_IO_INCLUDED */
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