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authorMauro Carvalho Chehab <mchehab+huawei@kernel.org>2021-03-03 19:19:22 +0300
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>2021-03-11 13:59:40 +0300
commitf9f81841bba3e76aaeed5a50bb5c756811b75234 (patch)
tree8c4f1b20f8f5353aee262160f924317f2b7df4d8 /Documentation/userspace-api/media
parentfea13a6935c79896a53a8ede32b0b6f6bce5042c (diff)
downloadlinux-f9f81841bba3e76aaeed5a50bb5c756811b75234.tar.xz
media: dev-overlay.rst: cleanup the xvideo example
It makes more sense to place the xvideo example at the body, keeping the footnote only to justify the design decision. While this makes the text better, it also fixes the PDF output. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'Documentation/userspace-api/media')
-rw-r--r--Documentation/userspace-api/media/v4l/dev-overlay.rst9
1 files changed, 4 insertions, 5 deletions
diff --git a/Documentation/userspace-api/media/v4l/dev-overlay.rst b/Documentation/userspace-api/media/v4l/dev-overlay.rst
index 07cc92564c16..4f4b23b95b9b 100644
--- a/Documentation/userspace-api/media/v4l/dev-overlay.rst
+++ b/Documentation/userspace-api/media/v4l/dev-overlay.rst
@@ -37,6 +37,10 @@ capturing and overlay. Optionally these drivers may also permit
capturing and overlay with a single file descriptor for compatibility
with V4L and earlier versions of V4L2. [#f1]_
+A common application of two file descriptors is the X11
+:ref:`Xv/V4L <xvideo>` interface driver and a V4L2 application.
+While the X server controls video overlay, the application can take
+advantage of memory mapping and DMA.
Querying Capabilities
=====================
@@ -289,11 +293,6 @@ To start or stop the frame buffer overlay applications call the
:ref:`VIDIOC_OVERLAY` ioctl.
.. [#f1]
- A common application of two file descriptors is the XFree86
- :ref:`Xv/V4L <xvideo>` interface driver and a V4L2 application.
- While the X server controls video overlay, the application can take
- advantage of memory mapping and DMA.
-
In the opinion of the designers of this API, no driver writer taking
the efforts to support simultaneous capturing and overlay will
restrict this ability by requiring a single file descriptor, as in