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Diffstat (limited to 'Documentation/media/uapi/v4l/vidioc-g-parm.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/vidioc-g-parm.rst | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/Documentation/media/uapi/v4l/vidioc-g-parm.rst b/Documentation/media/uapi/v4l/vidioc-g-parm.rst index e831fa5512f0..0d2593176c90 100644 --- a/Documentation/media/uapi/v4l/vidioc-g-parm.rst +++ b/Documentation/media/uapi/v4l/vidioc-g-parm.rst @@ -1,4 +1,11 @@ -.. -*- coding: utf-8; mode: rst -*- +.. Permission is granted to copy, distribute and/or modify this +.. document under the terms of the GNU Free Documentation License, +.. Version 1.1 or any later version published by the Free Software +.. Foundation, with no Invariant Sections, no Front-Cover Texts +.. and no Back-Cover Texts. A copy of the license is included at +.. Documentation/media/uapi/fdl-appendix.rst. +.. +.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections .. _VIDIOC_G_PARM: @@ -42,6 +49,9 @@ side. This is especially useful when using the :ref:`read() <func-read>` or :ref:`write() <func-write>`, which are not augmented by timestamps or sequence counters, and to avoid unnecessary data copying. +Changing the frame interval shall never change the format. Changing the +format, on the other hand, may change the frame interval. + Further these ioctls can be used to determine the number of buffers used internally by a driver in read/write mode. For implications see the section discussing the :ref:`read() <func-read>` function. |