References ▼
The instantiation of LEADDirectShowor Media Foundation filters is controlled by a central component called theLEAD DirectShow Kernel. This kernel is a COM object that must be registered before any other LEADDirectShowor Media Foundation filter. The LEADTOOLS setup installs and registers this object for you during installation. Your application installation program must do the same. Filters, once registered, enter an Evaluation mode for 60 days.
Filters, when they are instantiated, ask the kernel about their state. If the filter is declared to be expired, it will fail to be created.
过滤器需要解锁,使用接口posed by the kernel, in order to work in Release mode. For more information on the Evaluation mode, expired filters, and unlocking filters, refer toLMDSKernel2 Object.
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