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media: Documentation: vivid.rst: drop "Video, VBI and RDS Looping"

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Drop the "Video, VBI and RDS Looping" section, instead moving the
Video/VBI info to section "Video and Sliced VBI looping" and the
RDS info to section "Radio & RDS Looping".

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Hans Verkuil
2024-06-24 12:52:54 +03:00
parent 2513996024
commit 50e2eba54d
1 changed files with 17 additions and 15 deletions
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Documentation/admin-guide/media/vivid.rst
+17 -15
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@@ -1130,26 +1130,19 @@ Metadata Capture Controls
if set, then the generated metadata stream contains Source Clock information.
Video, VBI and RDS Looping
--------------------------
The vivid driver supports looping of video output to video input, VBI output
to VBI input and RDS output to RDS input. For video/VBI looping this emulates
as if a cable was hooked up between the output and input connector. So video
and VBI looping is only supported between S-Video and HDMI inputs and outputs.
Video and Sliced VBI Looping
----------------------------
The vivid driver supports looping of video output to video input, and VBI
output to VBI input. For video/VBI looping this emulates as if a cable was
hooked up between the output and input connector. So video and VBI looping
is only supported between S-Video and HDMI inputs and outputs.
VBI is only valid for S-Video as it makes no sense for HDMI.
Since radio is wireless this looping always happens if the radio receiver
frequency is close to the radio transmitter frequency. In that case the radio
transmitter will 'override' the emulated radio stations.
Looping is currently supported only between devices created by the same
vivid driver instance.
Video and Sliced VBI looping
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The way to enable video/VBI looping is currently fairly crude. A 'Loop Video'
control is available in the "Vivid" control class of the video
capture and VBI capture devices. When checked the video looping will be enabled.
@@ -1198,7 +1191,16 @@ and WSS (50 Hz formats) VBI data is looped. Teletext VBI data is not looped.
Radio & RDS Looping
~~~~~~~~~~~~~~~~~~~
-------------------
The vivid driver supports looping of RDS output to RDS input.
Since radio is wireless this looping always happens if the radio receiver
frequency is close to the radio transmitter frequency. In that case the radio
transmitter will 'override' the emulated radio stations.
RDS looping is currently supported only between devices created by the same
vivid driver instance.
As mentioned in the "Radio Receiver" section, the radio receiver emulates
stations at regular frequency intervals. Depending on the frequency of the