This library is a standalone file that provides an interface for all the non-DirectShow things. The Multiview application program folder you contains krgpio.dll file. Just run the application drop the Cross bar and the Capture filter (STK1160), connect them, render output and run.

Practically, how this can be done? Before you start the simplest way to see what you’re doing is to use GraphEdit. The source switching happens about every 1 second and it is done by sending the device a request to change video source. There are no synchronization issues since the PC decides for the device what source is currently on. This Multiview application breaks the video into frames and directs each frame to the relevant video window. The software that comes with the device (named Multiview) does exactly that. Sadly, the de-muxing of the video stream is not part of the DirectShow filters so viewing application should be responsible for that.

Instead they decided that the device will MUX the four videos into the one USB channel and demux the one back into four channels on the PC side. When the Syntek guys decided they wish to have more than one channel they decided not to change the USB communication frontend. But first some background and history, the Eas圜ap device used to be a single channel. This article provides information and how-to-use this non-standard interface to gain control over the device channels. This is done by using a non-standard API that controls the device functionality outside of DirectShow. Now, I know that the software that comes with the device definitely supports four simultaneous channels. In practice this is only half true, or should I say 25% true, the reason for this is fact that the DirectShow interface does not support channel selection and/or multi-channel. The STK1160 specification clearly states that the device is 'WDM Compatible' and 'Fully compatible with Microsoft’s DirectShow'.

This little article is for the all of you who made the mistake and bought a four channel Eas圜ap device (better known as Eas圜rap) and especially for those that insist of working with this device inside DirectShow.

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