128 lines
3.4 KiB
C
128 lines
3.4 KiB
C
/*
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** Command & Conquer Generals Zero Hour(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 __IFF_H
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#define __IFF_H
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#define MakeID(a,b,c,d) ( (int) ( ( (int) (a) ) << 24 | ( (int) (b) ) << 16 | \
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( (int) (c) ) << 8 | ( (int) (d) ) ) )
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#define vIFF_ID_FORM MakeID('F','O','R','M')
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#define vIFF_ID_CAT MakeID('C','A','T',' ')
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#define vIFF_ID_LIST MakeID('L','I','S','T')
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#define vIFF_ID_PROP MakeID('P','R','O','P')
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#define vIFF_ID_FILLER W_MakeID(' ',' ',' ',' ')
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/* IFF_FILE:
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IFF File handling structure
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*/
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/* defines for IFF_FILE->flags */
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#define mIFF_FILE_FORMOPEN (1<<0) /* in a form */
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#define mIFF_FILE_CHUNKOPEN (1<<1) /* in a chunk */
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#define mIFF_FILE_LOADED (1<<2) /* file is in memory */
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typedef struct
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{
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int ID; /* Chunk ID */
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int Size; /* Chunk size in bytes */
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} IFF_CHUNK;
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typedef struct {
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/* public fields */
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int FormID;
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int ChunkID;
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int FormSize;
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int ChunkSize;
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/* private fields */
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int fp;
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int flags;
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int next_byte;
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int chunk_size_pos;
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int form_size_pos;
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int pad_form;
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int pad_chunk;
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int file_size;
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int file_pos;
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char *mem_file;
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} IFF_FILE;
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IFF_FILE* IFF_Open ( const char * );
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IFF_FILE* IFF_Load ( const char * );
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VOID IFF_Reset ( IFF_FILE * );
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VOID IFF_Close ( IFF_FILE * );
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VOID IFF_goto_form_end ( IFF_FILE *);
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VOID IFF_goto_chunk_end ( IFF_FILE *);
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int IFF_NextForm ( IFF_FILE *);
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int IFF_NextChunk ( IFF_FILE *);
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int IFF_Read ( IFF_FILE *, void *, int );
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int IFF_Write ( IFF_FILE *, void *, int );
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IFF_FILE* IFF_New ( const char * );
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int IFF_NewForm ( IFF_FILE *, int );
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int IFF_NewChunk ( IFF_FILE *, int );
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int IFF_CloseForm ( IFF_FILE * );
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int IFF_CloseChunk ( IFF_FILE * );
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#define DO_OPEN(P,N,F,E) {if (!((P)=open(N,(F)))) goto E;}
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#define DO_READ(P,B,S,E) {if ( read((P),(B),(S))!=(S)) goto E;}
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#define DO_WRITE(P,B,S,E) {if ( write((P),(B),(S))!=(S)) goto E;}
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#define IFF_READ(iff,data,size,label) {if ( IFF_Read ( (iff), (data), (size)) != (size)) goto label;}
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#define IFF_WRITE(iff,data,size,label) {if ( IFF_Write ( (iff), (data), (size)) != (size)) goto label;}
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#define IFF_NEWCHUNK(iff,id,label) { if ( !IFF_NewChunk ( (iff), (id))) goto label; }
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#define IFF_NEWFORM(iff,id,label) { if ( !IFF_NewForm ( (iff), (id))) goto label; }
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#define Reverse32(L) ( (( (L)>>24 ) & 0xff) | (((L)>>8) &0xff00) | (((L)<<8)&0xff0000) | (((L)<<24)&0xff000000))
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#define Reverse16(L) ( (( (L)>>8 ) & 0xff) | (((L)<<8)&0xff00) )
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#define __CPU_BIG_ENDIAN__ 0
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#if __CPU_BIG_ENDIAN__
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#define BgEn32(L) (L)
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#define BgEn16(L) (L)
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#define LtEn32(L) Reverse32(L)
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#define LtEn16(L) Reverse16(L)
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#else
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#define BgEn32(L) Reverse32(L)
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#define BgEn16(L) Reverse16(L)
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#define LtEn32(L) (L)
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#define LtEn16(L) (L)
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#endif
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#endif /* __IFF_H */
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