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IltmmCapture::put_TargetArray

Summary

Sets the media target to an array of bytes.

Syntax

#include "ltmm.h"

Language	Syntax
C	HRESULT IltmmCapture_put_TargetArray(pCapture, newVal)
C++	HRESULT put_TargetArray(newVal)

Parameters

IltmmCapture *pCapture

Pointer to an IltmmCapture interface.

VARIANT newVal

VARIANT containing a reference to a SAFEARRAY that will receive the media data. The array must have one dimension and byte elements.

Returns

Value	Meaning
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

This function allows the user to set the output of the capturing process to a SAFEARRAY. The user is responsible for allocating, initializing, and freeing the array. However, the user should not free the array while the capture object holds a reference to it. The array will be resized, as needed, by the capture object. The ResetTarget function should be called to stop the capture object from accessing the array. The TargetType will be set to ltmmCapture_Target_Array.

It is recommended to preallocate the array to a size large enough to contain the output file. LEADTOOLS Multimedia will attempt to resize the array if the size of the file is larger than the array. But we have discovered during testing that the operating system calls for reallocating the array fail sometimes, even if there is enough available memory. We have discovered that the reallocation to a certain size might fail, but the allocation of that same size will work. The recommended size for the array is 10MB.