142 lines
3.9 KiB
C
142 lines
3.9 KiB
C
/*
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** Command & Conquer Red Alert(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (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, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef VQMIFF_H
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#define VQMIFF_H
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/****************************************************************************
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*
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* C O N F I D E N T I A L --- W E S T W O O D S T U D I O S
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*
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*----------------------------------------------------------------------------
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*
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* FILE
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* iff.h
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*
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* DESCRIPTION
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* IFF (Interchange File Format) manager definitions.
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* (32-Bit protected mode)
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*
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* PROGRAMMER
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* Denzil E. Long, Jr.
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*
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* DATE
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* January 26, 1995
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*
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****************************************************************************/
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/* FormHeader - Structure associated with IFF forms.
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*
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* id - IFF form id (IE: "FORM")
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* size - Length of IFF in bytes
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* type - Form type (IE: "ILBM")
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*/
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typedef struct _FormHeader {
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long id;
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long size;
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long type;
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} FormHeader;
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/* Context - Structure associated with chunks.
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*
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* id - Chunk identifier.
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* size - Size of chunk in bytes.
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* scan - Bytes read/written.
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*/
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typedef struct _Context {
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long id;
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long size;
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long scan;
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} Context;
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/* IFFHandle - Structure associated with an active IFF read\write session.
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*
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* fh - DOS filehandle
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* flags - Internal flags used by IFF routines.
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* form - IFF form information.
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* scan - Bytes read/written
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* cn - Context of current chunk.
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*/
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typedef struct _IFFHandle {
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long fh;
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long flags;
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FormHeader form;
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long scan;
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Context cn;
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} IFFHandle;
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/* bit masks for "flags" field. */
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#define IFFB_READ 0
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#define IFFB_WRITE 1
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#define IFFF_READ (1<<IFFB_READ)
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#define IFFF_WRITE (1<<IFFB_WRITE)
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/* IFF return codes. Most functions return either zero for success or
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* one of these codes. The exceptions are the read/write functions which,
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* return positive values for number of bytes read or written, or a negative
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* error code.
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*
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* IFFERR_EOF - End of file.
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* IFFERR_READ - Read error.
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* IFFERR_WRITE - Write error.
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* IFFERR_NOMEM - Unable to allocate memory.
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*/
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#define IFFERR_EOF -1
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#define IFFERR_READ -2
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#define IFFERR_WRITE -3
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#define IFFERR_NOMEM -4
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/* Macros to make things easier. */
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#define REVERSE_LONG(id) (unsigned long)((((unsigned long)(id)>>24) \
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&0x000000FFL)|(((unsigned long)(id)>>8) \
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&0x0000FF00L)|(((unsigned long)(id)<<8) \
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&0x00FF0000L)|(((unsigned long)(id)<<24)&0xFF000000L))
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#define REVERSE_WORD(id) ((unsigned short)((((unsigned short)(id)<<8) \
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&0x00FF00)|(((unsigned short)(id)>>8)&0x0FF)))
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#define PADSIZE(size) (((size)+1)&(~1))
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#ifndef MAKE_ID
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#define MAKE_ID(a,b,c,d) ((long)((long)(d)<<24)|((long)(c)<<16)| \
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((long)(b)<<8)|(long)(a))
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#endif
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/* Universal IFF identifiers */
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#define ID_FORM MAKE_ID('F','O','R','M')
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#define ID_LIST MAKE_ID('L','I','S','T')
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#define ID_PROP MAKE_ID('P','R','O','P')
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#define ID_NULL MAKE_ID(' ',' ',' ',' ')
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/* Prototypes */
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IFFHandle *OpenIFF(char *, long);
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void CloseIFF(IFFHandle *);
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long ReadForm(IFFHandle *, FormHeader *);
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long WriteForm(IFFHandle *, FormHeader *);
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long ReadChunkHeader(IFFHandle *);
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long WriteChunkHeader(IFFHandle *, long, long);
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long WriteChunk(IFFHandle *, long, char *, long);
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long WriteChunkBytes(IFFHandle *, char *, long);
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long ReadChunkBytes(IFFHandle *, char *, long);
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long SkipChunkBytes(IFFHandle *, long);
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long FindChunk(IFFHandle *, long);
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char *IDtoStr(long, char *);
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long CurrentFilePos(IFFHandle *);
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#endif /* VQMIFF_H */
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