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/*
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 * Copyright (c) 2002-2006 The TenDRA Project <http://www.tendra.org/>.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright notice,
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 *    this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice,
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 *    this list of conditions and the following disclaimer in the documentation
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 *    and/or other materials provided with the distribution.
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 * 3. Neither the name of The TenDRA Project nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific, prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
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 * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
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 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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 * EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 *
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 * $Id$
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 */
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/*
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    		 Crown Copyright (c) 1997
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    This TenDRA(r) Computer Program is subject to Copyright
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    owned by the United Kingdom Secretary of State for Defence
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    acting through the Defence Evaluation and Research Agency
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    (DERA).  It is made available to Recipients with a
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    royalty-free licence for its use, reproduction, transfer
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    to other parties and amendment for any purpose not excluding
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    product development provided that any such use et cetera
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    shall be deemed to be acceptance of the following conditions:-
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        (1) Its Recipients shall ensure that this Notice is
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        reproduced upon any copies or amended versions of it;
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        (2) Any amended version of it shall be clearly marked to
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        show both the nature of and the organisation responsible
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        for the relevant amendment or amendments;
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        (3) Its onward transfer from a recipient to another
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        party shall be deemed to be that party's acceptance of
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        these conditions;
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        (4) DERA gives no warranty or assurance as to its
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        quality or suitability for any purpose and DERA accepts
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        no liability whatsoever in relation to any use to which
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        it may be put.
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*/
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#ifndef ENCODE_INCLUDED
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#define ENCODE_INCLUDED
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/*
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    BITSTREAM ENCODING DECLARATIONS
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    The routines in this module are concerned with low level output.
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*/
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extern BITSTREAM *start_bitstream(FILE *, gen_ptr);
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extern void end_bitstream(BITSTREAM *, int);
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extern BITSTREAM *enc_bits(BITSTREAM *, unsigned, unsigned);
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extern BITSTREAM *enc_long_bits(BITSTREAM *, unsigned, unsigned long);
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extern BITSTREAM *enc_bytes(BITSTREAM *, unsigned long, string);
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extern BITSTREAM *enc_ascii(BITSTREAM *, unsigned long, string);
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extern BITSTREAM *enc_extn(BITSTREAM *, unsigned, unsigned);
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extern BITSTREAM *enc_int(BITSTREAM *, unsigned long);
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extern BITSTREAM *enc_int_aux(BITSTREAM *, unsigned long);
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extern BITSTREAM *enc_ident(BITSTREAM *, string, unsigned long);
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extern BITSTREAM *enc_tdfstring(BITSTREAM *, unsigned long, string);
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extern BITSTREAM *enc_ustring(BITSTREAM *, string);
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extern BITSTREAM *enc_boundary(BITSTREAM *);
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extern BITSTREAM *enc_bitstream(BITSTREAM *, BITSTREAM *);
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extern BITSTREAM *join_bitstreams(BITSTREAM *, BITSTREAM *);
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extern unsigned length_bitstream(BITSTREAM *);
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/*
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    BITSTREAM SIZES
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    These macros give the number of bits in a byte and the number of
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    bytes in a bitstream.
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*/
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#define BYTE_SIZE		((unsigned)8)
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#define CHUNK_SIZE		((unsigned)64)
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#define CHUNK_COPY		((unsigned)8)
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#define BYTE_MASK		((unsigned)0xff)
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/*
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    ENCODING MACROS
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    These macros give shorthands for the main encoding routines which are
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    used in this module.  Note that A is used at least twice in each
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    definition.
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*/
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#define ENC_BITS(A, B, C)\
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    (A) = enc_bits((A), (unsigned)(B), (unsigned)(C))
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#define ENC_BITS_2(A, B, C)\
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    (A) = enc_long_bits((A), (unsigned)(B), (ulong)(C))
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#define ENC_EXTN(A, B, C)\
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    (A) = enc_extn((A), (unsigned)(B), (unsigned)(C))
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#define ENC_INT(A, B)\
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    (A) = enc_int((A), (unsigned long)(B))
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#define ENC_IDENT(A, B, C)\
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    (A) = enc_ident((A), (B), (unsigned long)(C))
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#define ENC_ALIGN(A)\
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    (A) = enc_boundary((A))
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#define ENC_BOOL(A, B)	ENC_BITS(A, 1, B)
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#define ENC_ON(A)	ENC_BITS(A, 1, 1)
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#define ENC_OFF(A)	ENC_BITS(A, 1, 0)
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#define ENC_OFFS(A, B)	ENC_BITS(A, B, 0)
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#endif