#ifndef IFFPARSE_INTERN_H #define IFFPARSE_INTERN_H /* Include files */ #ifndef EXEC_TYPES_H # include #endif #ifndef PROTO_EXEC_H # include #endif #ifndef PROTO_DOS_H # include #endif #ifndef PROTO_UTILITY_H # include #endif #ifndef PROTO_ALIB_H # include #endif #ifndef PROTO_IFFPARSE_H # include #endif #ifndef LIBRARIES_IFFPARSE_H # include #endif #ifndef EXEC_MEMORY_H # include #endif #ifndef EXEC_LIBRARIES_H # include #endif #ifndef AROS_LIBCALL_H # include #endif #ifndef DOS_DOS_H # include #endif #include /* Some external stuff (iffparse_init.c) */ struct IFFParseBase_intern; /* prerefrence */ /* Internal prototypes */ LONG ReadStream (struct IFFHandle *, APTR, LONG, struct IFFParseBase_intern *); LONG ReadStreamLong (struct IFFHandle *, APTR, struct IFFParseBase_intern *); LONG WriteStream (struct IFFHandle *, APTR, LONG, struct IFFParseBase_intern *); LONG WriteStreamLong (struct IFFHandle *, APTR, struct IFFParseBase_intern *); VOID PurgeLCI (struct LocalContextItem *, struct IFFParseBase_intern *); LONG PushContextNode (struct IFFHandle *, LONG ,LONG, LONG, LONG, struct IFFParseBase_intern *); VOID PopContextNode (struct IFFHandle *, struct IFFParseBase_intern *); LONG GetChunkHeader (struct IFFHandle *, struct IFFParseBase_intern *); LONG InvokeHandlers (struct IFFHandle *, LONG, LONG, struct IFFParseBase_intern *); LONG SeekStream (struct IFFHandle *, LONG, struct IFFParseBase_intern *); /* Some system entry & exit handlers (hook funcs) ß*/ LONG StopFunc (struct Hook *, APTR, APTR); LONG PropFunc (struct Hook *, struct IFFHandle *, APTR); LONG CollectionFunc (struct Hook *, struct IFFHandle *, APTR); /* A system purge hook for purging the LCIs installed by PropChunk and CollectionChunk */ IPTR CollectionPurgeFunc (struct Hook *, struct LocalContextItem *, ULONG); IPTR PropPurgeFunc (struct Hook *, struct LocalContextItem *, ULONG); /* Buffer functions */ struct BufferList * AllocBuffer (ULONG, struct IFFParseBase_intern *); VOID FreeBuffer (struct BufferList *, struct IFFParseBase_intern *); struct BufferNode * AllocBufferNode (struct BufferList *, struct IFFParseBase_intern *); LONG WriteToBuffer (struct BufferList *, UBYTE *, LONG, struct IFFParseBase_intern *); BOOL SeekBuffer (struct BufferList *, LONG); BOOL BufferToStream (struct BufferList *, struct IFFHandle *, struct IFFParseBase_intern *); /* StreamHandler hooks */ IPTR DOSStreamHandler (struct Hook *, struct IFFHandle *, struct IFFStreamCmd *); IPTR ClipStreamHandler (struct Hook *, struct IFFHandle *, struct IFFStreamCmd *); IPTR BufStreamHandler (struct Hook *, struct IFFHandle *, struct IFFStreamCmd *); /* Message port help functions */ BOOL InitPort (struct MsgPort *, struct Task *, struct IFFParseBase_intern *); VOID ClosePort (struct MsgPort *, struct IFFParseBase_intern *); /* Buffered stream install/deinstall */ LONG InitBufferedStream (struct IFFHandle*, struct IFFParseBase_intern *); LONG ExitBufferedStream (struct IFFHandle*, struct IFFParseBase_intern *); /* Endian conversion */ LONG SwitchIfLittleEndian(LONG); /* Private flags */ #define IFFF_OPEN (1L << 19) /* The different states the parser can be in. Chose values so that the compiler easily can create a jump table */ #define IFFSTATE_COMPOSITE 0 #define IFFSTATE_PUSHCHUNK 1 #define IFFSTATE_ATOMIC 2 #define IFFSTATE_SCANEXIT 3 #define IFFSTATE_EXIT 4 #define IFFSTATE_POPCHUNK 5 /* Size of one tile of a buffer to use in buffering of chunks */ #define BUFFERNODESIZE 10000 /* Size of buffer fake a forward seek with Read()s */ #define SEEKBUFSIZE 10000 /************************/ /* Internal structures */ /************************/ /* Structure for maintaing a list of buffers for buffering */ struct BufferList { struct MinList bl_ListHeader; /* The size of each buffer */ ULONG bl_BufferNodeSize; /* The current position of the Write/Seek pointer */ /* A buffer node */ struct BufferNode * bl_CurrentNode; /* An offset pointer into that particular node. */ ULONG bl_CurrentOffset; /* The number of the current buffernode (the number in the list). First buffenode is number 1 (not 0) */ ULONG bl_CurrentNodeNum; /* Number of bytes written to the bufferlist */ ULONG bl_BufferSize; /* Number of nodes in the list */ }; /* One node in the bufferlist. Contains a pointer to the buffer - tile itself */ struct BufferNode { struct MinNode bn_Node; UBYTE * bn_BufferPtr; }; /* Internal version of a ContextNode. Contains a list of LocalContextItems. */ struct IntContextNode { struct ContextNode CN; struct MinList cn_LCIList; /* True if this chunk is a FORM, LIST or CAT */ BOOL cn_Composite; }; #define GetIntCN(cn) ((struct IntContextNode *)(cn)) #define GetCN(cn) (&GetIntCN(cn)->CN)) /* Internal version of the IffHandle data structure. Contains quite a bit of useful information, eg the current context etc. */ struct IntIFFHandle { struct IFFHandle IH; /* The default context node is built-in into the iffhandle */ struct IntContextNode iff_DefaultCN; /* A linkedlist simulated stack with context nodes */ struct MinList iff_CNStack; /* containd the state in which the parser currently is */ ULONG iff_CurrentState; /* The context depth at which we have started buffering. 0 if no buffering is needed. */ ULONG iff_BufferStartDepth; /* Here InitIff store it's parameters */ struct Hook * iff_StreamHandler; /* Entrys to preserve the StreamHandler, stream and the stream flags whenever the buffering streamhandle is inserted */ struct Hook * iff_PreservedHandler; LONG iff_PreservedFlags; IPTR iff_PreservedStream; }; #define GetIntIH(ih) ((struct IntIFFHandle *)(ih)) #define GetIH(ih) (&GetIntIH(ih)->IH) /* Internal version of the LocalContextItem structure. Contains the dataSize and a Hook for purging... */ struct IntLocalContextItem { struct LocalContextItem LCI; struct Hook * lci_PurgeHook; UBYTE * lci_UserData; ULONG lci_UserDataSize; }; #define GetIntLCI(lci) ((struct IntLocalContextItem *)(lci)) #define GetLCI(lci) (&GetIntLCI(lci)->LCI) /* LocalItem data in IFFLCI_ENTRY/EXITHANDLER LCIs */ struct HandlerInfo { struct Hook * hi_Hook; APTR hi_Object; }; /* LocalItem data inside IFFLCI_PROP LCIs */ struct CIPtr { struct CollectionItem * FirstCI; }; /* Usefull macros */ #define TopChunk( iff ) (struct ContextNode*)GetIntIH(iff)->iff_CNStack.mlh_Head #define RootChunk(iff) (struct ContextNode*)GetIntIH(iff)->iff_CNStack.mlh_TailPred struct IFFParseBase_intern { struct Library library; struct ExecBase * sysbase; BPTR seglist; struct Library * dosbase; struct Library * utilitybase; struct Hook stophook; struct Hook prophook; struct Hook collectionhook; struct Hook doshook; struct Hook cliphook; struct Hook bufhook; struct Hook collectionpurgehook; struct Hook proppurgehook; }; #define IPB(ipb) ((struct IFFParseBase_intern *)ipb) #undef SysBase #define SysBase (IPB(IFFParseBase)->sysbase) #undef DOSBase #define DOSBase (IPB(IFFParseBase)->dosbase) #undef UtilityBase #define UtilityBase (IPB(IFFParseBase)->utilitybase) #define expunge() \ AROS_LC0(BPTR, expunge, struct IFFParseBase_intern *, IFFParseBase, 3, IFFParse) #endif /* IFFPARSE_INTERN_H */