Mercurial > mm7
view lib/legacy_dx/dmusbuff.h @ 1904:1a1c4040bee4
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author | Ritor1 |
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date | Mon, 21 Oct 2013 17:23:59 +0600 |
parents | 9c0607679772 |
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/*************************************************************************** * * * DMusBuff.h -- This module defines the buffer format for DirectMusic * * Shared file between user mode and kernel mode components * * * * Copyright (c) 1998, Microsoft Corp. All rights reserved. * * * ***************************************************************************/ #ifndef _DMusBuff_ #define _DMusBuff_ /* Format of DirectMusic events in a buffer * * A buffer contains 1 or more events, each with the following header. * Immediately following the header is the event data. The header+data * size is rounded to the nearest quadword (8 bytes). */ #include <pshpack4.h> /* Do not pad at end - that's where the data is */ typedef struct _DMUS_EVENTHEADER *LPDMUS_EVENTHEADER; typedef struct _DMUS_EVENTHEADER { DWORD cbEvent; /* Unrounded bytes in event */ DWORD dwChannelGroup; /* Channel group of event */ REFERENCE_TIME rtDelta; /* Delta from start time of entire buffer */ DWORD dwFlags; /* Flags DMUS_EVENT_xxx */ } DMUS_EVENTHEADER; #include <poppack.h> #define DMUS_EVENT_STRUCTURED 0x00000001 /* Unstructured data (SysEx, etc.) */ /* The number of bytes to allocate for an event with 'cb' data bytes. */ #define QWORD_ALIGN(x) (((x) + 7) & ~7) #define DMUS_EVENT_SIZE(cb) QWORD_ALIGN(sizeof(DMUS_EVENTHEADER) + cb) #endif /* _DMusBuff_ */