media/v4l/vidioc-s-hw-freq-seek.rst

1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_S_HW_FREQ_SEEK - Perform a hardware frequency seek
41 The ``rangelow`` and ``rangehigh`` fields can be set to a non-zero value
58 If this ioctl is called from a non-blocking filehandle, then ``EAGAIN``
65 .. flat-table:: struct v4l2_hw_freq_seek
66     :header-rows:  0
67     :stub-columns: 0
70     * - __u32
71       - ``tuner``
72       - The tuner index number. This is the same value as in the struct
75     * - __u32
76       - ``type``
77       - The tuner type. This is the same value as in the struct
80     * - __u32
81       - ``seek_upward``
82       - If non-zero, seek upward from the current frequency, else seek
84     * - __u32
85       - ``wrap_around``
86       - If non-zero, wrap around when at the end of the frequency range,
89     * - __u32
90       - ``spacing``
91       - If non-zero, defines the hardware seek resolution in Hz. The
93 	If spacing is zero a reasonable default value is used.
94     * - __u32
95       - ``rangelow``
96       - If non-zero, the lowest tunable frequency of the band to search in
102 	``rangelow`` is zero a reasonable default value is used.
103     * - __u32
104       - ``rangehigh``
105       - If non-zero, the highest tunable frequency of the band to search
111 	``rangehigh`` is zero a reasonable default value is used.
112     * - __u32
113       - ``reserved``\ [5]
114       - Reserved for future extensions. Applications must set the array to
120 On success 0 is returned, on error -1 and the ``errno`` variable is set
122 :ref:`Generic Error Codes <gen-errors>` chapter.
131     non-blocking mode.