diff options
Diffstat (limited to 'Documentation/media/uapi/v4l/vidioc-subdev-enum-frame-interval.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/vidioc-subdev-enum-frame-interval.rst | 107 |
1 files changed, 33 insertions, 74 deletions
diff --git a/Documentation/media/uapi/v4l/vidioc-subdev-enum-frame-interval.rst b/Documentation/media/uapi/v4l/vidioc-subdev-enum-frame-interval.rst index 0aa6482a91a6..1a02c935c8b5 100644 --- a/Documentation/media/uapi/v4l/vidioc-subdev-enum-frame-interval.rst +++ b/Documentation/media/uapi/v4l/vidioc-subdev-enum-frame-interval.rst @@ -15,7 +15,8 @@ VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL - Enumerate frame intervals Synopsis ======== -.. cpp:function:: int ioctl( int fd, int request, struct v4l2_subdev_frame_interval_enum * argp ) +.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL, struct v4l2_subdev_frame_interval_enum * argp ) + :name: VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL Arguments @@ -24,9 +25,6 @@ Arguments ``fd`` File descriptor returned by :ref:`open() <func-open>`. -``request`` - VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL - ``argp`` @@ -45,7 +43,7 @@ when enumerating frame intervals. To enumerate frame intervals applications initialize the ``index``, ``pad``, ``which``, ``code``, ``width`` and ``height`` fields of struct -:ref:`v4l2_subdev_frame_interval_enum <v4l2-subdev-frame-interval-enum>` +:c:type:`v4l2_subdev_frame_interval_enum` and call the :ref:`VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL` ioctl with a pointer to this structure. Drivers fill the rest of the structure or return an EINVAL error code if one of the input fields is invalid. All frame @@ -61,81 +59,42 @@ Sub-devices that support the frame interval enumeration ioctl should implemented it on a single pad only. Its behaviour when supported on multiple pads of the same sub-device is not defined. +.. c:type:: v4l2_subdev_frame_interval_enum -.. _v4l2-subdev-frame-interval-enum: +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. flat-table:: struct v4l2_subdev_frame_interval_enum :header-rows: 0 :stub-columns: 0 :widths: 1 1 2 - - - .. row 1 - - - __u32 - - - ``index`` - - - Number of the format in the enumeration, set by the application. - - - .. row 2 - - - __u32 - - - ``pad`` - - - Pad number as reported by the media controller API. - - - .. row 3 - - - __u32 - - - ``code`` - - - The media bus format code, as defined in - :ref:`v4l2-mbus-format`. - - - .. row 4 - - - __u32 - - - ``width`` - - - Frame width, in pixels. - - - .. row 5 - - - __u32 - - - ``height`` - - - Frame height, in pixels. - - - .. row 6 - - - struct :ref:`v4l2_fract <v4l2-fract>` - - - ``interval`` - - - Period, in seconds, between consecutive video frames. - - - .. row 7 - - - __u32 - - - ``which`` - - - Frame intervals to be enumerated, from enum - :ref:`v4l2_subdev_format_whence <v4l2-subdev-format-whence>`. - - - .. row 8 - - - __u32 - - - ``reserved``\ [8] - - - Reserved for future extensions. Applications and drivers must set - the array to zero. + * - __u32 + - ``index`` + - Number of the format in the enumeration, set by the application. + * - __u32 + - ``pad`` + - Pad number as reported by the media controller API. + * - __u32 + - ``code`` + - The media bus format code, as defined in + :ref:`v4l2-mbus-format`. + * - __u32 + - ``width`` + - Frame width, in pixels. + * - __u32 + - ``height`` + - Frame height, in pixels. + * - struct :c:type:`v4l2_fract` + - ``interval`` + - Period, in seconds, between consecutive video frames. + * - __u32 + - ``which`` + - Frame intervals to be enumerated, from enum + :ref:`v4l2_subdev_format_whence <v4l2-subdev-format-whence>`. + * - __u32 + - ``reserved``\ [8] + - Reserved for future extensions. Applications and drivers must set + the array to zero. Return Value @@ -147,7 +106,7 @@ appropriately. The generic error codes are described at the EINVAL The struct - :ref:`v4l2_subdev_frame_interval_enum <v4l2-subdev-frame-interval-enum>` + :c:type:`v4l2_subdev_frame_interval_enum` ``pad`` references a non-existing pad, one of the ``code``, ``width`` or ``height`` fields are invalid for the given pad or the ``index`` field is out of bounds. |