ILMDVRSource::ReadData

#include "ILMDVRSource.h"

C Syntax

HRESULT ILMDVRSource_ReadData(pILMDVRSource, startOffset, minSize, maxSize, dwUserData, pData, pSizeRead)

C++ Syntax

HRESULT ReadData(startOffset, minSize, maxSize, dwUserData, pData, pSizeRead)

ILMDVRSource *pILMDVRSource;

pointer to an interface

double startOffset;

data read starting offset

long minSize;

minimum size to read

long maxSize;

maximum size to read

DWORD dwUserData;

Reserved

BYTE * pData;

pointer to a block of memory data

long * pSizeRead;

pointer to data read size

Reads the DVRSource data associated with the specified offset.

Parameter

Description

pILMDVRSource

Pointer to an ILMDVRSource interface.

startOffset

A double value indicating the starting offset for the read operation.

minSize

A long value specifying the minimum size to read.

maxSize

A long value specifying the maximum size to read.

dwUserData

Reserved.

pData

A pointer to a block of memory that will receive the read data.

pSizeRead

Pointer to a long type that will receive the size of the read data.

Returns

S_OK

The function was successful.

<> S_OK

An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.

Comments

S_OK if successful; otherwise, returns a code indicating the reason for failure:

E_UNEXPECTED = Unexpected invalid file handle

LTMM_E_DVR_DISCARDED_DATA = Data has been discarded due to a restart.

LTMM_E_DVR_CORRUPT_STUB_FILE = Corrupted .LBL file.

Required DLLs and Libraries

ILMDVRSource

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64

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