blob: 9138352f0d94a06ebfaf6194694584879262b688 (
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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
/*++
Copyright (c) Microsoft Corporation. All rights reserved.
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:
SaveData.h
Abstract:
Declaration of data saving class for ACX driver samples. This class supplies services
to save data to disk.
--*/
#pragma once
//-----------------------------------------------------------------------------
// Forward declaration
//-----------------------------------------------------------------------------
class CSaveData;
typedef CSaveData *PCSaveData;
//-----------------------------------------------------------------------------
// Structs
//-----------------------------------------------------------------------------
// Parameter to workitem.
#include <pshpack1.h>
typedef struct _SAVEWORKER_PARAM {
PIO_WORKITEM WorkItem;
ULONG ulFrameNo;
ULONG ulDataSize;
PBYTE pData;
PCSaveData pSaveData;
KEVENT EventDone;
} SAVEWORKER_PARAM;
typedef SAVEWORKER_PARAM *PSAVEWORKER_PARAM;
#include <poppack.h>
// wave file header.
#include <pshpack1.h>
typedef struct _OUTPUT_FILE_HEADER
{
DWORD dwRiff;
DWORD dwFileSize;
DWORD dwWave;
DWORD dwFormat;
DWORD dwFormatLength;
} OUTPUT_FILE_HEADER;
typedef OUTPUT_FILE_HEADER *POUTPUT_FILE_HEADER;
typedef struct _OUTPUT_DATA_HEADER
{
DWORD dwData;
DWORD dwDataLength;
} OUTPUT_DATA_HEADER;
typedef OUTPUT_DATA_HEADER *POUTPUT_DATA_HEADER;
#include <poppack.h>
//-----------------------------------------------------------------------------
// Classes
//-----------------------------------------------------------------------------
///////////////////////////////////////////////////////////////////////////////
// CSaveData
// Saves the wave data to disk.
//
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
IO_WORKITEM_ROUTINE SaveFrameWorkerCallback;
class CSaveData
{
protected:
UNICODE_STRING m_FileName; // DataFile name.
HANDLE m_FileHandle; // DataFile handle.
PBYTE m_pDataBuffer; // Data buffer.
ULONG m_ulBufferSize; // Total buffer size.
ULONG m_ulFrameIndex; // Current Frame.
ULONG m_ulFrameCount; // Frame count.
ULONG m_ulFrameSize;
ULONG m_ulBufferOffset; // index in buffer.
PBOOL m_fFrameUsed; // Frame usage table.
KSPIN_LOCK m_FrameInUseSpinLock; // Spinlock for synch.
KMUTEX m_FileSync; // Synchronizes file access
OBJECT_ATTRIBUTES m_objectAttributes; // Used for opening file.
OUTPUT_FILE_HEADER m_FileHeader;
PWAVEFORMATEX m_waveFormat;
OUTPUT_DATA_HEADER m_DataHeader;
PLARGE_INTEGER m_pFilePtr;
static PDEVICE_OBJECT m_pDeviceObject;
static ULONG m_ulStreamId;
static ULONG m_ulOffloadStreamId;
static PSAVEWORKER_PARAM m_pWorkItems;
BOOL m_fWriteDisabled;
BOOL m_bInitialized;
public:
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
CSaveData();
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
~CSaveData();
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
void
Cleanup(
void
);
static
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
NTSTATUS
InitializeWorkItems(
_In_ PDEVICE_OBJECT DeviceObject
);
static
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
void
DestroyWorkItems(
void
);
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
void
Disable(
_In_ BOOL fDisable
);
static
__drv_maxIRQL(DISPATCH_LEVEL)
PSAVEWORKER_PARAM
GetNewWorkItem(
void
);
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
NTSTATUS
Initialize(
_In_ BOOL _bOffloaded
);
static
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
NTSTATUS
SetDeviceObject(
_In_ PDEVICE_OBJECT DeviceObject
);
static
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
PDEVICE_OBJECT
GetDeviceObject(
void
);
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
void
ReadData(
_Inout_updates_bytes_all_(ulByteCount) PBYTE pBuffer,
_In_ ULONG ulByteCount
);
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
NTSTATUS
SetDataFormat(
_In_ PKSDATAFORMAT pDataFormat
);
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
NTSTATUS
SetMaxWriteSize(
_In_ ULONG ulMaxWriteSize
);
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
void
WaitAllWorkItems(
void
);
__drv_maxIRQL(DISPATCH_LEVEL)
void
WriteData(
_In_reads_bytes_(ulByteCount) PBYTE pBuffer,
_In_ ULONG ulByteCount
);
private:
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
NTSTATUS
FileClose(
void
);
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
NTSTATUS
FileOpen(
_In_ BOOL fOverWrite
);
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
NTSTATUS
FileWrite(
_In_reads_bytes_(ulDataSize) PBYTE pData,
_In_ ULONG ulDataSize
);
__drv_maxIRQL(PASSIVE_LEVEL)
PAGED_CODE_SEG
NTSTATUS
FileWriteHeader(
void
);
__drv_maxIRQL(DISPATCH_LEVEL)
void
SaveFrame(
_In_ ULONG ulFrameNo,
_In_ ULONG ulDataSize
);
friend
IO_WORKITEM_ROUTINE SaveFrameWorkerCallback;
};
typedef CSaveData *PCSaveData;
|
