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IltmmTargetFormat::GetCacheObject

#include "ltmm.h"

C Syntax	HRESULT IltmmTargetFormat_getCacheObject(pTargetFormat, ObjType, ppObject)
C++ Syntax	HRESULT GetCacheObject(ObjType, ppObject)

 

IltmmTargetFormat * pTargetFormat;	/* pointer to an interface */
long ObjType;	/* object type */
Iunknown ** ppObject;	/* pointer to a pointer */

Retrieves the caching filter object.

Parameter	Description
pTargetFormat	Pointer to the IltmmTargetFormat interface that references the target format object.
ObjType	Value that indicates which caching object to retrieve. This must be one of the ltmmTargetFormat_Object Constants.
ppObject	Pointer to a variable to receive the caching filter object interface pointer.

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

Use the IltmmTargetFormat::get_UseFilterCache function to query whether the toolkit is caching filters. It returns the value that was set using the IltmmTargetFormat::put_UserFilterCache. Use the IltmmTargetFormat::put_UseFilterCache function to enable or disable caching for the target format. Use the IltmmTargetFormat::GetCacheObject function to retrieve the caching filter object. Use the IltmmTargetFormat::ShowCacheDialog function to display a specific property dialog for the caching filter. Use the IltmmTargetFormat::HasCacheDialog function to query whether the specified property dialog for the caching filter is available.

The user is responsible for releasing the retrieved caching filter object by calling its Release() function, when it is no longer needed.

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:	IltmmTargetFormat::get_UseFilterCache, IltmmTargetFormat::put_UseFilterCache, IltmmTargetFormat::HasCacheDialog IltmmTargetFormat::ShowCacheDialog, IltmmCapture::GetSubObject, IltmmConvert::GetSubObject
Topics:	Multimedia Function Group

Example

For a C example, refer to IltmmTargetFormat::CreateTargetFormats.

For a C example, refer to IltmmTargetFormat::put_UseFilterCache.

For a C++ example, refer to IltmmTargetFormat::CreateTargetFormats.

For a C++ example, refer to IltmmTargetFormat::put_UseFilterCache.