FilterImageGrabber:即时抓图的Filter。这是一个Trans-In-Place Filter，Filter注册名为“HQ Image Grabber”，仅支持RGB32/24/565/555四种媒体类型，

将其接入到Filter链路之后，可以抓取任何一个经过该Filter的Sample。-FilterImageGrabber : Instant screen in Filter. This is a Trans-In-Place Filter, Filter registered called "HQ Image Grabber," only support RGB32/24/565/555 four media types, their access to Filter Link, can crawl through any one of the Filter Sample.