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IltmmCapture::put_TargetArray

#include "ltmm.h"

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

 

IltmmCapture *pCapture;	/* pointer to an interface */
VARIANT newVal;	/* the array to set */

Sets the media target to an array of bytes.

Parameter	Description
pCapture	Pointer to an IltmmCapture interface.
newVal	VARIANT containing a reference to a SAFEARRAY that will receive the media data. The array must have one dimension and byte elements.

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

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.

Required DLLs and Libraries

LTMM 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

See Also

Elements:	IltmmCapture::get_TargetArray, IltmmCapture::get_TargetType, IltmmCapture::ResetTarget, ltmmCapture_Target Constants
Topics:	Multimedia Function Group

Example

For a C example, refer to Advanced Capture Application for C.

For a C++ example, refer to Advanced Capture Application for C++.