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1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
10 Name  chapter
13 VIDIOC_G_AUDIO - VIDIOC_S_AUDIO - Query or select the current audio input and its attributes
49 cannot be satisfied. However, this is a write-only ioctl, it does not
52 .. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
56 .. flat-table:: struct v4l2_audio
57     :header-rows:  0
58     :stub-columns: 0
61     * - __u32
62       - ``index``
63       - Identifies the audio input, set by the driver or application.
64     * - __u8
65       - ``name``\ [32]
66       - Name of the audio input, a NUL-terminated ASCII string, for
69     * - __u32
70       - ``capability``
71       - Audio capability flags, see :ref:`audio-capability`.
72     * - __u32
73       - ``mode``
74       - Audio mode flags set by drivers and applications (on
75 	:ref:`VIDIOC_S_AUDIO <VIDIOC_G_AUDIO>` ioctl), see :ref:`audio-mode`.
76     * - __u32
77       - ``reserved``\ [2]
78       - Reserved for future extensions. Drivers and applications must set
82 .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.5cm}|
84 .. _audio-capability:
86 .. flat-table:: Audio Capability Flags
87     :header-rows:  0
88     :stub-columns: 0
91     * - ``V4L2_AUDCAP_STEREO``
92       - 0x00001
93       - This is a stereo input. The flag is intended to automatically
97     * - ``V4L2_AUDCAP_AVL``
98       - 0x00002
99       - Automatic Volume Level mode is supported.
102 .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.5cm}|
104 .. _audio-mode:
106 .. flat-table:: Audio Mode Flags
107     :header-rows:  0
108     :stub-columns: 0
111     * - ``V4L2_AUDMODE_AVL``
112       - 0x00001
113       - AVL mode is on.
118 On success 0 is returned, on error -1 and the ``errno`` variable is set
120 :ref:`Generic Error Codes <gen-errors>` chapter.