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164 lines
5.4 KiB
C
164 lines
5.4 KiB
C
/* -*-mode: C; fill-column: 78; c-basic-offset: 4; -*- */
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/*
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* Copyright 1997 - 2000 by Eric House (xwords@eehouse.org). All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _XWSTREAM_H_
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#define _XWSTREAM_H_
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#include "comtypes.h"
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#include "memstream.h"
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/* #include "xptypes.h" */
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#define START_OF_STREAM 0
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#define END_OF_STREAM -1
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typedef XP_U32 XWStreamPos; /* low 3 bits are bit offset; rest byte offset */
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enum { POS_READ, POS_WRITE };
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typedef XP_U8 PosWhich;
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#ifdef DEBUG
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# define DBG_LINE_FILE_FORMAL , XP_U16 lin, const char* fil
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# define DBG_LINE_FILE_PARM , __LINE__, __FILE__
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#else
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# define DBG_LINE_FILE_FORMAL
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# define DBG_LINE_FILE_PARM
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#endif
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typedef struct StreamCtxVTable {
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void (*m_stream_destroy)( XWStreamCtxt* dctx );
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XP_U8 (*m_stream_getU8)( XWStreamCtxt* dctx );
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void (*m_stream_getBytes)( XWStreamCtxt* dctx, void* where,
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XP_U16 count );
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XP_U16 (*m_stream_getU16)( XWStreamCtxt* dctx );
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XP_U32 (*m_stream_getU32)( XWStreamCtxt* dctx );
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XP_U32 (*m_stream_getBits)( XWStreamCtxt* dctx, XP_U16 nBits );
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void (*m_stream_putU8)( XWStreamCtxt* dctx, XP_U8 byt );
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void (*m_stream_putBytes)( XWStreamCtxt* dctx, const void* whence,
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XP_U16 count );
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void (*m_stream_catString)( XWStreamCtxt* dctx, const char* whence );
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void (*m_stream_putU16)( XWStreamCtxt* dctx, XP_U16 data );
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void (*m_stream_putU32)( XWStreamCtxt* dctx, XP_U32 data );
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void (*m_stream_putBits)( XWStreamCtxt* dctx, XP_U16 nBits, XP_U32 bits
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DBG_LINE_FILE_FORMAL );
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void (*m_stream_copyFromStream)( XWStreamCtxt* dctx, XWStreamCtxt* src,
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XP_U16 nBytes );
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XWStreamPos (*m_stream_getPos)( XWStreamCtxt* dctx, PosWhich which );
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XWStreamPos (*m_stream_setPos)( XWStreamCtxt* dctx, XWStreamPos newpos,
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PosWhich which );
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void (*m_stream_open)( XWStreamCtxt* dctx );
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void (*m_stream_close)( XWStreamCtxt* dctx );
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XP_U16 (*m_stream_getSize)( const XWStreamCtxt* dctx );
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/* void (*m_stream_makeReturnAddr)( XWStreamCtxt* dctx, XP_PlayerAddr* addr, */
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/* XP_U16* addrLen ); */
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XP_PlayerAddr (*m_stream_getAddress)( XWStreamCtxt* dctx );
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void (*m_stream_setAddress)( XWStreamCtxt* dctx, XP_PlayerAddr channelNo );
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void (*m_stream_setVersion)( XWStreamCtxt* dctx, XP_U16 vers );
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XP_U16 (*m_stream_getVersion)( XWStreamCtxt* dctx );
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void (*m_stream_setOnCloseProc)( XWStreamCtxt* dctx,
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MemStreamCloseCallback proc );
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} StreamCtxVTable;
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struct XWStreamCtxt {
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StreamCtxVTable* vtable;
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};
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#define stream_destroy(sc) \
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(sc)->vtable->m_stream_destroy(sc)
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#define stream_getU8(sc) \
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(sc)->vtable->m_stream_getU8(sc)
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#define stream_getBytes(sc, wh, c ) \
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(sc)->vtable->m_stream_getBytes((sc), (wh), (c))
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#define stream_getU16(sc) \
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(sc)->vtable->m_stream_getU16(sc)
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#define stream_getU32(sc) \
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(sc)->vtable->m_stream_getU32(sc)
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#define stream_getBits(sc, n) \
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(sc)->vtable->m_stream_getBits((sc), (n))
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#define stream_putU8(sc, b) \
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(sc)->vtable->m_stream_putU8((sc), (b))
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#define stream_putBytes( sc, w, c ) \
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(sc)->vtable->m_stream_putBytes((sc), (w), (c))
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#define stream_catString( sc, w ) \
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(sc)->vtable->m_stream_catString((sc), (w))
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#define stream_putU16(sc, d) \
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(sc)->vtable->m_stream_putU16((sc), (d))
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#define stream_putU32(sc, d) \
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(sc)->vtable->m_stream_putU32((sc), (d))
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#define stream_putBits(sc, n, b) \
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(sc)->vtable->m_stream_putBits((sc), (n), (b) DBG_LINE_FILE_PARM )
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#define stream_copyFromStream( sc, src, nb ) \
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(sc)->vtable->m_stream_copyFromStream((sc), (src), (nb))
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#define stream_getPos(sc, w) \
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(sc)->vtable->m_stream_getPos((sc), (w))
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#define stream_setPos(sc, p, w) \
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(sc)->vtable->m_stream_setPos((sc), (p), (w))
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#define stream_open(sc) \
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(sc)->vtable->m_stream_open((sc))
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#define stream_close(sc) \
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(sc)->vtable->m_stream_close((sc))
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#define stream_getSize(sc) \
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(sc)->vtable->m_stream_getSize((sc))
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#define stream_makeReturnAddr(sc,addr,len) \
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(sc)->vtable->m_stream_makeReturnAddr((sc),(addr),(len))
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#define stream_getAddress(sc) \
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(sc)->vtable->m_stream_getAddress((sc))
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#define stream_setAddress(sc,ch) \
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(sc)->vtable->m_stream_setAddress((sc),(ch))
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#define stream_setVersion(sc,ch) \
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(sc)->vtable->m_stream_setVersion((sc),(ch))
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#define stream_getVersion(sc) \
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(sc)->vtable->m_stream_getVersion((sc))
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#define stream_setOnCloseProc(sc, p) \
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(sc)->vtable->m_stream_setOnCloseProc((sc), (p))
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#endif /* _XWSTREAM_H_ */
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