Enables or disables the caching of filters.
#include "ltmm.h"
Language | Syntax |
---|---|
C | HRESULT IltmmTargetFormat_put_UseFilterCache(pTargetFormat, newVal) |
C++ | HRESULT put_UseFilterCache(newVal) |
Pointer to the IltmmTargetFormat interface that references the target format object.
Flag that indicates whether to enable or disable the caching of filters. Possible values are:
Value | Meaning |
---|---|
VARIANT_TRUE | Enable the caching of filters. |
VARIANT_FALSE | Disable the caching of filters. This is the default value. |
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. |
This function will force the toolkit to preload and reuse the filters specified for the particular format. Calling the IltmmTargetFormat::put_UserFilterCache function with VARIANT_TRUE will enable caching for this target format. If there is not a currently created object, then it will create it. Setting this function to VARIANT_FALSE will disable the caching for this target object. If an object is already created, it will destroy it.
Use the IltmmTargetFormat::get_UseFilterCache function to query whether the toolkit is currently caching filters. It returns the value that was set using the IltmmTargetFormat::put_UserFilterCache function. 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.
Win32, x64.
Language | Example |
---|---|
C | • IltmmTargetFormat::CreateTargetFormats |
• IltmmTargetFormat::put_UseFilterCache | |
C++ | • IltmmTargetFormat::CreateTargetFormats |
• IltmmTargetFormat::put_UseFilterCache |
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