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The ltmmCapture and ltmmConvert objects allow the user to write media data to memory instead of a file.
Define the memory target you should allocate an empty SAFEARRAY and assign it to the ltmmCapture or ltmmConvert object. The assignment is performed as follows:
IltmmConvert* pConvert; // ltmmConvert object interface (initialized elsewhere)SAFEARRAY* psa;// allocate an empty byte arraypsa = SafeArrayCreateVector(VT_UI1, 0, 0);// the array must be passed in a VARIANTVariantInit(&var);V_VT(&var) = (VT_ARRAY | VT_UI1);V_ARRAY(&var) = psa;// assign the arrayIltmmConvert_put_TargetArray (pConvert, var);
IltmmConvert* pConvert; // ltmmConvert object interface (initialized elsewhere)SAFEARRAY* psa;// allocate an empty byte arraypsa = SafeArrayCreateVector(VT_UI1, 0, 0);// the array must be passed in a VARIANTVariantInit(&var);V_VT(&var) = (VT_ARRAY | VT_UI1);V_ARRAY(&var) = psa;// assign the arraypConvert->put_TargetArray (var);
The array will be resized and filled with the objects output data. As long as the array is assigned to object, the array data and descriptor should not be accessed. The user can reset the target by calling the ResetTarget function:
IltmmConvert_ResetTarget (pConvert); pConvert->ResetTarget (); Once the target has been reset, the user may access or free the memory.
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