72 lines
2.9 KiB
C
72 lines
2.9 KiB
C
/* mmiocf.h
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*
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* Multimedia File I/O Library.
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*
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* This include file contains declarations required for compound file support.
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*/
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#define PC(hmmcf) ((PMMCF)(hmmcf))
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#define CP(pmmcf) ((HMMCF)(pmmcf))
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typedef HLOCAL HMMCF; // a handle to an open RIFF compound file
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typedef struct _MMCFINFO // structure for representing CTOC header info.
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{
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DWORD dwHeaderSize; // size of CTOC header (w/o entries)
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DWORD dwEntriesTotal; // no. of entries in table of contents
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DWORD dwEntriesDeleted; // no. of entries ref. to. del. ent.
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DWORD dwEntriesUnused; // no. of entries that are not used
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DWORD dwBytesTotal; // total bytes of CGRP contents
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DWORD dwBytesDeleted; // total bytes of deleted CGRP elements
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DWORD dwHeaderFlags; // flags
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WORD wEntrySize; // size of each <CTOC-table-entry>
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WORD wNameSize; // size of each <achName> field
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WORD wExHdrFields; // number of "extra header fields"
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WORD wExEntFields; // number of "extra entry fields"
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} MMCFINFO, FAR *LPMMCFINFO;
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typedef struct _MMCTOCENTRY // structure for representing CTOC entry info.
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{
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DWORD dwOffset; // offset of element inside CGRP chunk
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DWORD dwSize; // size of element inside CGRP chunk
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DWORD dwMedType; // media element type of CF element
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DWORD dwMedUsage; // media element usage information
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DWORD dwCompressTech; // media element compression technique
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DWORD dwUncompressBytes; // size after decompression
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DWORD adwExEntField[1]; // extra CTOC table entry fields
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} MMCTOCENTRY, FAR *LPMMCTOCENTRY;
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/* <dwFlags> field of MMIOINFO structure -- many same as OpenFile() flags */
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#define MMIO_CTOCFIRST 0x00020000 // mmioCFOpen(): put CTOC before CGRP
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/* flags for other functions */
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#define MMIO_FINDFIRST 0x0010 // mmioCFFindEntry(): find first entry
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#define MMIO_FINDNEXT 0x0020 // mmioCFFindEntry(): find next entry
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#define MMIO_FINDUNUSED 0x0040 // mmioCFFindEntry(): find unused entry
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#define MMIO_FINDDELETED 0x0080 // mmioCFFindEntry(): find deleted entry
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/* message numbers for MMIOPROC */
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#define MMIOM_GETCF 10 // get HMMCF of CF element
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#define MMIOM_GETCFENTRY 11 // get ptr. to CTOC table entry
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/* four character codes used to identify standard built-in I/O procedures */
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#define FOURCC_BND mmioFOURCC('B', 'N', 'D', ' ')
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/* <dwHeaderFlags> field of MMCFINFO structure */
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#define CTOC_HF_SEQUENTIAL 0x00000001 // CF elements in same order as CTOC
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#define CTOC_HF_MEDSUBTYPE 0x00000002 // <dwMedUsage> is a med. el. subtype
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/* CTOC table entry flags */
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#define CTOC_EF_DELETED 0x01 // CF element is deleted
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#define CTOC_EF_UNUSED 0x02 // CTOC entry is unused
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/* CF I/O prototypes */
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HMMCF API mmioCFOpen(LPSTR szFileName, DWORD dwFlags);
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HMMCF API mmioCFAccess(HMMIO hmmio, LPMMCFINFO lpmmcfinfo,
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DWORD dwFlags);
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WORD API mmioCFClose(HMMCF hmmcf, WORD wFlags);
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DWORD API mmioCFGetInfo(HMMCF hmmcf, LPMMCFINFO lpmmcfinfo, DWORD cb);
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DWORD API mmioCFSetInfo(HMMCF hmmcf, LPMMCFINFO lpmmcfinfo, DWORD cb);
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LPMMCTOCENTRY API mmioCFFindEntry(HMMCF hmmcf, LPSTR szName,
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WORD wFlags, LPARAM lParam);
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