audio/Acx/Samples/Common/SimPeakMeter.h


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
42
43
44
45
46
47
48
49
50
51

/*++

    THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
    KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
    PURPOSE.

Module Name:

    SimPeakMeter.h

Abstract:

    Virtual Peakmeter - aggregates all streams

Environment:

    Kernel mode

--*/

#pragma once

class CSimPeakMeter
{
public:
    __drv_maxIRQL(PASSIVE_LEVEL)
    PAGED_CODE_SEG
    CSimPeakMeter();

    __drv_maxIRQL(PASSIVE_LEVEL)
    PAGED_CODE_SEG
    ~CSimPeakMeter();

    __drv_maxIRQL(PASSIVE_LEVEL)
    PAGED_CODE_SEG
    LONG GetValue(_In_ ULONG Channel);

    __drv_maxIRQL(PASSIVE_LEVEL)
    PAGED_CODE_SEG
    NTSTATUS StartStream();

    __drv_maxIRQL(PASSIVE_LEVEL)
    PAGED_CODE_SEG
    NTSTATUS StopStream();

private:
    LONG m_NumStreams;
    LONG m_PeakMeterIndex;
};