| Message ID | 1403567669-18539-3-git-send-email-laurent.pinchart+renesas@ideasonboard.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Regards, Hans On 06/24/2014 01:54 AM, Laurent Pinchart wrote: > Extend the V4L2_CID_ALPHA_COMPONENT control for use on output devices, > to set the alpha component value when the output format doesn't have an > alpha channel. > > Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> > --- > Documentation/DocBook/media/v4l/controls.xml | 17 ++++++++++------- > 1 file changed, 10 insertions(+), 7 deletions(-) > > diff --git a/Documentation/DocBook/media/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml > index 47198ee..4dfea27 100644 > --- a/Documentation/DocBook/media/v4l/controls.xml > +++ b/Documentation/DocBook/media/v4l/controls.xml > @@ -398,14 +398,17 @@ to work.</entry> > <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 > + <entry>Sets the alpha color component. When a capture device (or > + capture queue of a mem-to-mem device) produces a 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. > + and the alpha value is not defined by the device or the mem-to-mem > + input data this control lets you select the alpha component value of > + all pixels. When an output device (or output queue of a mem-to-mem > + device) consumes a frame format that doesn't include an alpha > + component and the device supports alpha channel processing this > + control lets you set the alpha component value of all pixels for > + further processing in the device. > </entry> > </row> > <row> > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/DocBook/media/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml index 47198ee..4dfea27 100644 --- a/Documentation/DocBook/media/v4l/controls.xml +++ b/Documentation/DocBook/media/v4l/controls.xml @@ -398,14 +398,17 @@ to work.</entry> <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 + <entry>Sets the alpha color component. When a capture device (or + capture queue of a mem-to-mem device) produces a 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. + and the alpha value is not defined by the device or the mem-to-mem + input data this control lets you select the alpha component value of + all pixels. When an output device (or output queue of a mem-to-mem + device) consumes a frame format that doesn't include an alpha + component and the device supports alpha channel processing this + control lets you set the alpha component value of all pixels for + further processing in the device. </entry> </row> <row>
Extend the V4L2_CID_ALPHA_COMPONENT control for use on output devices, to set the alpha component value when the output format doesn't have an alpha channel. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> --- Documentation/DocBook/media/v4l/controls.xml | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-)