doc-rst: extended-controls: use reference for VIDIOC_S_CTRL
Instead of using a constant, use references, just like the other references for ioctl's. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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@ -54,9 +54,9 @@ contains a pointer to the control array, a count of the number of
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controls in that array and a control class. Control classes are used to
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group similar controls into a single class. For example, control class
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``V4L2_CTRL_CLASS_USER`` contains all user controls (i. e. all controls
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that can also be set using the old ``VIDIOC_S_CTRL`` ioctl). Control
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class ``V4L2_CTRL_CLASS_MPEG`` contains all controls relating to MPEG
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encoding, etc.
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that can also be set using the old :ref:`VIDIOC_S_CTRL <VIDIOC_G_CTRL>`
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ioctl). Control class ``V4L2_CTRL_CLASS_MPEG`` contains all controls
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relating to MPEG encoding, etc.
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All controls in the control array must belong to the specified control
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class. An error is returned if this is not the case.
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