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[media] vivi: add v4l2_ctrl_modify_range test case

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Update the brighness range depending on the selected input. Useful for
testing control range events.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2013-03-12 03:56:55 -03:00 • committed by Mauro Carvalho Chehab
parent b781e6be79
commit af2d68d1be
1 changed files with 9 additions and 0 deletions
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9
drivers/media/platform/vivi.c
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@ -1093,6 +1093,15 @@ static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
return 0; return 0;
dev->input = i; dev->input = i;
/*
* Modify the brightness range depending on the input.
* This makes it easy to use vivi to test if applications can
* handle control range modifications and is also how this is
* typically used in practice as different inputs may be hooked
* up to different receivers with different control ranges.
*/
v4l2_ctrl_modify_range(dev->brightness,
128 * i, 255 + 128 * i, 1, 127 + 128 * i);
precalculate_bars(dev); precalculate_bars(dev);
precalculate_line(dev); precalculate_line(dev);
return 0; return 0;