From: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
To: Linux Media Mailing List <linux-media@vger.kernel.org>
Cc: linuxarm@huawei.com, mauro.chehab@huawei.com,
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] media: dev-overlay.rst: cleanup the xvideo example
Date: Wed, 3 Mar 2021 18:16:19 +0100 [thread overview]
Message-ID: <e572b82eabca853728f2dd6ce9087bacfb5d5a5b.1614791758.git.mchehab+huawei@kernel.org> (raw)
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>
---
Documentation/userspace-api/media/v4l/dev-overlay.rst | 9 ++++-----
1 file 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
--
2.29.2
next reply other threads:[~2021-03-03 19:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-03 17:16 Mauro Carvalho Chehab [this message]
2021-03-03 17:16 ` [PATCH 2/2] media: vbi_hsync.svg: fix the viewports Mauro Carvalho Chehab
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