diff options
| author | Vaibhav Hiremath <hvaibhav@ti.com> | 2009-11-10 13:14:51 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-05 18:42:04 -0200 |
| commit | a4834cef185fbe73f26c864fe38badc4f890afb7 (patch) | |
| tree | 3b81232b3a1b728a2cedd9edcfe6bd5ac20ae289 /Documentation/DocBook | |
| parent | d8008562379b927758ca08eded1508c68d9beb4e (diff) | |
V4L/DVB (13471): v4l2 doc: Added FBUF_CAP_SRC_CHROMAKEY/FLAG_SRC_CHROMAKEY
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'Documentation/DocBook')
| -rw-r--r-- | Documentation/DocBook/v4l/vidioc-g-fbuf.xml | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/DocBook/v4l/vidioc-g-fbuf.xml b/Documentation/DocBook/v4l/vidioc-g-fbuf.xml index f7017062656..e7dda4822f0 100644 --- a/Documentation/DocBook/v4l/vidioc-g-fbuf.xml +++ b/Documentation/DocBook/v4l/vidioc-g-fbuf.xml @@ -336,6 +336,13 @@ alpha value. Alpha blending makes no sense for destructive overlays.</entry> inverted alpha channel of the framebuffer or VGA signal. Alpha blending makes no sense for destructive overlays.</entry> </row> + <row> + <entry><constant>V4L2_FBUF_CAP_SRC_CHROMAKEY</constant></entry> + <entry>0x0080</entry> + <entry>The device supports Source Chroma-keying. Framebuffer pixels +with the chroma-key colors are replaced by video pixels, which is exactly opposite of +<constant>V4L2_FBUF_CAP_CHROMAKEY</constant></entry> + </row> </tbody> </tgroup> </table> @@ -411,6 +418,16 @@ images, but with an inverted alpha value. The blend function is: output = framebuffer pixel * (1 - alpha) + video pixel * alpha. The actual alpha depth depends on the framebuffer pixel format.</entry> </row> + <row> + <entry><constant>V4L2_FBUF_FLAG_SRC_CHROMAKEY</constant></entry> + <entry>0x0040</entry> + <entry>Use source chroma-keying. The source chroma-key color is +determined by the <structfield>chromakey</structfield> field of +&v4l2-window; and negotiated with the &VIDIOC-S-FMT; ioctl, see <xref +linkend="overlay" /> and <xref linkend="osd" />. +Both chroma-keying are mutual exclusive to each other, so same +<structfield>chromakey</structfield> field of &v4l2-window; is being used.</entry> + </row> </tbody> </tgroup> </table> |