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author | aap <aap@papnet.eu> | 2019-06-02 10:25:55 +0200 |
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committer | GitHub <noreply@github.com> | 2019-06-02 10:25:55 +0200 |
commit | 9c26e46e17b421288f7653f4c9cff81b4b6cdfb0 (patch) | |
tree | c1b34122ddd4be0461a5310c964e8218b9f5781e /dxsdk/Include/dmusbuff.h | |
parent | implemented splashes; fixed zones (diff) | |
parent | Merge branch 'master' into master (diff) | |
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Diffstat (limited to 'dxsdk/Include/dmusbuff.h')
-rw-r--r-- | dxsdk/Include/dmusbuff.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/dxsdk/Include/dmusbuff.h b/dxsdk/Include/dmusbuff.h new file mode 100644 index 00000000..54884538 --- /dev/null +++ b/dxsdk/Include/dmusbuff.h @@ -0,0 +1,41 @@ +/*************************************************************************** +* * +* 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_ */ + + |