blob: 2d1844faa152f40160d440ae93a834d50a88455c (
plain)
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
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/*++
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:
PositionSimClock.h
Abstract:
Simulated clock for keeping track of stream position.
Environment:
Kernel mode
--*/
#pragma once
#include "PositionClock.h"
#define HNSTIME_PER_MILLISECOND 10000
class CPositionSimClock : public IPositionClock
{
public:
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
CPositionSimClock();
virtual
__drv_maxIRQL(PASSIVE_LEVEL)
~CPositionSimClock();
virtual
__drv_maxIRQL(PASSIVE_LEVEL)
void Pause();
virtual
__drv_maxIRQL(PASSIVE_LEVEL)
void Run();
virtual
__drv_maxIRQL(PASSIVE_LEVEL)
void Stop();
virtual
__drv_maxIRQL(PASSIVE_LEVEL)
ULONGLONG GetElapsedTime(_Out_ PULONGLONG pQpcTimeStamp);
protected:
ULONGLONG m_StartTime;
ULONGLONG m_ElapsedTimeWhenPaused;
ULONGLONG m_QpcTimeStamp;
KSPIN_LOCK m_Lock;
typedef enum _SimClockState_t
{
SIM_CLOCK_STATE_STOP,
SIM_CLOCK_STATE_PAUSE,
SIM_CLOCK_STATE_RUN,
SIM_CLOCK_STATE_Count
}SimClockState;
SimClockState m_State;
__drv_maxIRQL(DISPATCH_LEVEL)
ULONGLONG GetElapsedTimeUnlocked();
};
|
