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Ultimedia Services Version 2 for AIX: Programmer's Guide and Reference

UMSVideoInPortable Object

The UMSVideoInPortable object is an Ultimedia Services Version 2 feature and does not apply to Ultimedia Services Version 1.2.1.

This class inherits from the UMSVideoIn class.

This object is the portable device specific version of the UMSVideoIn object. The specific adapter is the PCIVCA.

This adaptor uses color keying and overlay to display video. The color keying is used to do clipping. A color is chosen as the key. A rectangle of this color is drawn into the window. Part of the video picture is sent to the display everywhere this color rectangle would be visible to you. If a window of a different color covers the video window, the area of color would not be visible to you and the video isn't sent to the display. If some text is drawn into this second window and the color of the text happens to be the same as the color rectangle, then some of the video is visible as if the text was transparent. This is normal. There are only 256 colors to choose from when doing color keying and there is no way to restrict programs from using any of them.

There is only one overlay area on the adaptor and the size is a maximum of 640 x 480 pixels. The image format is of type YUV422_UYVY. The captured video can be scaled down (smaller width & height), but not up (larger).

To learn more about the UMSVideoInPortable object, see:

For introductory information, see Video, Monitor, and Camera Control Support Objects.

Method Description

All methods are inherited from UMSVideoIn.

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