blob: b3ad9884d5c79f9faefabcf00e366e4a20ebc19b (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
/*++ BUILD Version: 0001 // Increment this if a change has global effects
Copyright (c) 1990-1993 Microsoft Corporation
Module Name:
ntddsnd.h
Abstract:
This is the include file that defines all the common
constants and types for sound devices.
Author:
Nigel Thompson (NigelT) 17-May-91
Revision History:
--*/
#ifndef _NTDDSND_
#define _NTDDSND_
//
// Define the IOCTL base values for sound devices and each class
// of sound device
//
#define IOCTL_SOUND_BASE FILE_DEVICE_SOUND
#define IOCTL_WAVE_BASE 0x0000
#define IOCTL_MIDI_BASE 0x0080
//
// Define some useful limits
//
#define SOUND_MAX_DEVICE_NAME 80 // BUGBUG this is a wild guess
#define SOUND_MAX_DEVICES 100 // Max no of devices of a given type
#endif // _NTDDSND_
|