media/v4l/vidioc-subdev-enum-frame-size.rst

1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_SUBDEV_ENUM_FRAME_SIZE - Enumerate media bus frame sizes
35 supported by a sub-device on the specified pad
59 Sub-devices that only support discrete frame sizes (such as most
64 supported. For instance, a scaler that uses a fixed-point scaling ratio
68 sub-device for an exact supported frame size.
71 pads of the sub-device, as well as on the current active links and the
80 .. flat-table:: struct v4l2_subdev_frame_size_enum
81     :header-rows:  0
82     :stub-columns: 0
85     * - __u32
86       - ``index``
87       - Index of the frame size in the enumeration belonging to the given pad
89     * - __u32
90       - ``pad``
91       - Pad number as reported by the media controller API.
93     * - __u32
94       - ``code``
95       - The media bus format code, as defined in
96 	:ref:`v4l2-mbus-format`. Filled in by the application.
97     * - __u32
98       - ``min_width``
99       - Minimum frame width, in pixels. Filled in by the driver.
100     * - __u32
101       - ``max_width``
102       - Maximum frame width, in pixels. Filled in by the driver.
103     * - __u32
104       - ``min_height``
105       - Minimum frame height, in pixels. Filled in by the driver.
106     * - __u32
107       - ``max_height``
108       - Maximum frame height, in pixels. Filled in by the driver.
109     * - __u32
110       - ``which``
111       - Frame sizes to be enumerated, from enum
112 	:ref:`v4l2_subdev_format_whence <v4l2-subdev-format-whence>`.
113     * - __u32
114       - ``stream``
115       - Stream identifier.
116     * - __u32
117       - ``reserved``\ [7]
118       - Reserved for future extensions. Applications and drivers must set
124 On success 0 is returned, on error -1 and the ``errno`` variable is set
126 :ref:`Generic Error Codes <gen-errors>` chapter.
130     non-existing pad, the ``which`` field has an unsupported value, the ``code``