189 lines
4.7 KiB
C
189 lines
4.7 KiB
C
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/*++
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Copyright (c) 1997-2000 Microsoft Corporation All Rights Reserved
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Module Name:
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savedata.h
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Abstract:
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Declaration of MSVAD data saving class. This class supplies services
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to save data to disk.
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--*/
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#ifndef _MSVAD_SAVEDATA_H
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#define _MSVAD_SAVEDATA_H
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//-----------------------------------------------------------------------------
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// Forward declaration
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//-----------------------------------------------------------------------------
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class CSaveData;
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typedef CSaveData *PCSaveData;
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//-----------------------------------------------------------------------------
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// Structs
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//-----------------------------------------------------------------------------
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// Parameter to workitem.
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#include <pshpack1.h>
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typedef struct _SAVEWORKER_PARAM {
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#ifdef USE_OBSOLETE_FUNCS
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WORK_QUEUE_ITEM WorkItem;
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#else
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PIO_WORKITEM WorkItem;
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#endif
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ULONG ulFrameNo;
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ULONG ulDataSize;
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PBYTE pData;
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PCSaveData pSaveData;
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KEVENT EventDone;
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} SAVEWORKER_PARAM;
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typedef SAVEWORKER_PARAM *PSAVEWORKER_PARAM;
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#include <poppack.h>
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// wave file header.
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#include <pshpack1.h>
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typedef struct _OUTPUT_FILE_HEADER
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{
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DWORD dwRiff;
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DWORD dwFileSize;
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DWORD dwWave;
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DWORD dwFormat;
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DWORD dwFormatLength;
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} OUTPUT_FILE_HEADER;
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typedef OUTPUT_FILE_HEADER *POUTPUT_FILE_HEADER;
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typedef struct _OUTPUT_DATA_HEADER
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{
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DWORD dwData;
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DWORD dwDataLength;
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} OUTPUT_DATA_HEADER;
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typedef OUTPUT_DATA_HEADER *POUTPUT_DATA_HEADER;
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#include <poppack.h>
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//-----------------------------------------------------------------------------
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// Classes
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//-----------------------------------------------------------------------------
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///////////////////////////////////////////////////////////////////////////////
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// CSaveData
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// Saves the wave data to disk.
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//
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class CSaveData
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{
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protected:
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UNICODE_STRING m_FileName; // DataFile name.
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HANDLE m_FileHandle; // DataFile handle.
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PBYTE m_pDataBuffer; // Data buffer.
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ULONG m_ulBufferSize; // Total buffer size.
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ULONG m_ulFramePtr; // Current Frame.
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ULONG m_ulFrameCount; // Frame count.
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ULONG m_ulFrameSize;
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ULONG m_ulBufferPtr; // Pointer in buffer.
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PBOOL m_fFrameUsed; // Frame usage table.
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KSPIN_LOCK m_FrameInUseSpinLock; // Spinlock for synch.
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OBJECT_ATTRIBUTES m_objectAttributes; // Used for opening file.
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OUTPUT_FILE_HEADER m_FileHeader;
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PWAVEFORMATEX m_waveFormat;
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OUTPUT_DATA_HEADER m_DataHeader;
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PLARGE_INTEGER m_pFilePtr;
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static PDEVICE_OBJECT m_pDeviceObject;
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static ULONG m_ulStreamId;
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static PSAVEWORKER_PARAM m_pWorkItems;
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BOOL m_fWriteDisabled;
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public:
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CSaveData();
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~CSaveData();
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static void DestroyWorkItems
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(
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void
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);
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void Disable
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(
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BOOL fDisable
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);
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static PSAVEWORKER_PARAM GetNewWorkItem
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(
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void
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);
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NTSTATUS Initialize
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(
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void
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);
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static NTSTATUS InitializeWorkItems
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(
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IN PDEVICE_OBJECT DeviceObject
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);
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void ReadData
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(
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IN PBYTE pBuffer,
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IN ULONG ulByteCount
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);
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NTSTATUS SetDataFormat
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(
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IN PKSDATAFORMAT pDataFormat
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);
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void WaitAllWorkItems
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(
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void
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);
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void WriteData
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(
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IN PBYTE pBuffer,
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IN ULONG ulByteCount
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);
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private:
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NTSTATUS FileClose
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(
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void
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);
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NTSTATUS FileOpen
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(
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IN BOOL fOverWrite
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);
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NTSTATUS FileWrite
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(
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IN PBYTE pData,
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IN ULONG ulDataSize
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);
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NTSTATUS FileWriteHeader
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(
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void
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);
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void SaveFrame
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(
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IN ULONG ulFrameNo,
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IN ULONG ulDataSize
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);
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friend void SaveFrameWorkerCallback
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#ifdef USE_OBSOLETE_FUNCS
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(
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IN PVOID Context
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);
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#else
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(
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PDEVICE_OBJECT pDeviceObject,
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IN PVOID Context
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);
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#endif
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};
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typedef CSaveData *PCSaveData;
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#endif
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