Source code of Windows XP (NT5)
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/* mmiocf.h
* * Multimedia File I/O Library. * * This include file contains declarations required for compound file support. */
#define PC(hmmcf) ((PMMCF)(hmmcf))
#define CP(pmmcf) ((HMMCF)(pmmcf))
typedef HLOCAL HMMCF; // a handle to an open RIFF compound file
typedef struct _MMCFINFO // structure for representing CTOC header info.
{ DWORD dwHeaderSize; // size of CTOC header (w/o entries)
DWORD dwEntriesTotal; // no. of entries in table of contents
DWORD dwEntriesDeleted; // no. of entries ref. to. del. ent.
DWORD dwEntriesUnused; // no. of entries that are not used
DWORD dwBytesTotal; // total bytes of CGRP contents
DWORD dwBytesDeleted; // total bytes of deleted CGRP elements
DWORD dwHeaderFlags; // flags
WORD wEntrySize; // size of each <CTOC-table-entry>
WORD wNameSize; // size of each <achName> field
WORD wExHdrFields; // number of "extra header fields"
WORD wExEntFields; // number of "extra entry fields"
} MMCFINFO, FAR *LPMMCFINFO;
typedef struct _MMCTOCENTRY // structure for representing CTOC entry info.
{ DWORD dwOffset; // offset of element inside CGRP chunk
DWORD dwSize; // size of element inside CGRP chunk
DWORD dwMedType; // media element type of CF element
DWORD dwMedUsage; // media element usage information
DWORD dwCompressTech; // media element compression technique
DWORD dwUncompressBytes; // size after decompression
DWORD adwExEntField[1]; // extra CTOC table entry fields
} MMCTOCENTRY, FAR *LPMMCTOCENTRY;
/* <dwFlags> field of MMIOINFO structure -- many same as OpenFile() flags */#define MMIO_CTOCFIRST 0x00020000 // mmioCFOpen(): put CTOC before CGRP
/* flags for other functions */#define MMIO_FINDFIRST 0x0010 // mmioCFFindEntry(): find first entry
#define MMIO_FINDNEXT 0x0020 // mmioCFFindEntry(): find next entry
#define MMIO_FINDUNUSED 0x0040 // mmioCFFindEntry(): find unused entry
#define MMIO_FINDDELETED 0x0080 // mmioCFFindEntry(): find deleted entry
/* message numbers for MMIOPROC */#define MMIOM_GETCF 10 // get HMMCF of CF element
#define MMIOM_GETCFENTRY 11 // get ptr. to CTOC table entry
/* four character codes used to identify standard built-in I/O procedures */#define FOURCC_BND mmioFOURCC('B', 'N', 'D', ' ')
/* <dwHeaderFlags> field of MMCFINFO structure */#define CTOC_HF_SEQUENTIAL 0x00000001 // CF elements in same order as CTOC
#define CTOC_HF_MEDSUBTYPE 0x00000002 // <dwMedUsage> is a med. el. subtype
/* CTOC table entry flags */#define CTOC_EF_DELETED 0x01 // CF element is deleted
#define CTOC_EF_UNUSED 0x02 // CTOC entry is unused
/* CF I/O prototypes */HMMCF API mmioCFOpen(LPSTR szFileName, DWORD dwFlags);HMMCF API mmioCFAccess(HMMIO hmmio, LPMMCFINFO lpmmcfinfo, DWORD dwFlags);WORD API mmioCFClose(HMMCF hmmcf, WORD wFlags);DWORD API mmioCFGetInfo(HMMCF hmmcf, LPMMCFINFO lpmmcfinfo, DWORD cb);DWORD API mmioCFSetInfo(HMMCF hmmcf, LPMMCFINFO lpmmcfinfo, DWORD cb);LPMMCTOCENTRY API mmioCFFindEntry(HMMCF hmmcf, LPSTR szName, WORD wFlags, LPARAM lParam);
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