+ <row id="v4l2-alpha-component">
+ <entry><constant>V4L2_CID_ALPHA_COMPONENT</constant></entry>
+ <entry>integer</entry>
+ <entry> Sets the alpha color component on the capture device or on
+ the capture buffer queue of a mem-to-mem device. When a mem-to-mem
+ device produces frame format that includes an alpha component
+ (e.g. <link linkend="rgb-formats">packed RGB image formats</link>)
+ and the alpha value is not defined by the mem-to-mem input data
+ this control lets you select the alpha component value of all
+ pixels. It is applicable to any pixel format that contains an alpha
+ component.
+ </entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CID_LASTP1</constant></entry>
+ <entry></entry>
+ <entry>End of the predefined control IDs (currently
+ <constant>V4L2_CID_ALPHA_COMPONENT</constant> + 1).</entry>
+ </row>