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docs: formatdomain: Use code blocks to emphasize various sound device options
Emphasize the various sound card models and other config options by using ``...``. Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
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Peter Krempa
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@ -7209,9 +7209,9 @@ A virtual sound card can be attached to the host via the ``sound`` element.
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``sound``
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The ``sound`` element has one mandatory attribute, ``model``, which specifies
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what real sound device is emulated. Valid values are specific to the
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underlying hypervisor, though typical choices are 'sb16', 'es1370', 'pcspk',
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'ac97' (:since:`Since 0.6.0`), 'ich6' (:since:`Since 0.8.8`), 'ich9'
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(:since:`Since 1.1.3`), 'usb' (:since:`Since 1.2.8`) and 'ich7'
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underlying hypervisor, though typical choices are ``sb16``, ``es1370``,
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``pcspk``, ``ac97`` (:since:`Since 0.6.0`), ``ich6`` (:since:`Since 0.8.8`),
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``ich9`` (:since:`Since 1.1.3`), ``usb`` (:since:`Since 1.2.8`) and ``ich7``
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(:since:`Since 6.7.0`, bhyve only).
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:since:`Since 0.9.13` , a sound element with ``ich6`` or ``ich9`` models can have
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@ -7221,9 +7221,9 @@ and recording.
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Valid values are:
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- 'duplex' - advertise a line-in and a line-out
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- 'micro' - advertise a speaker and a microphone
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- 'output' - advertise a line-out :since:`Since 4.4.0`
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- ``duplex`` - advertise a line-in and a line-out
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- ``micro`` - advertise a speaker and a microphone
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- ``output`` - advertise a line-out :since:`Since 4.4.0`
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::
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@ -7264,8 +7264,8 @@ to the guest sound device.
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``type``
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The required ``type`` attribute specifies audio backend type.
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Currently, the supported values are 'none', 'alsa', 'coreaudio',
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'dbus', jack', 'oss', 'pulseaudio', 'sdl', 'spice', 'file'.
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Currently, the supported values are ``none``, ``alsa``, ``coreaudio``,
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``dbus``, ``jack``, ``oss``, ``pulseaudio``, ``sdl``, ``spice``, ``file``.
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``id``
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Integer id of the audio device. Must be greater than 0.
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@ -7339,22 +7339,22 @@ is permitted with the following attributes.
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Note:
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If no ``<audio/>`` element is defined, and the ``graphics`` element is set to
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either 'vnc' or 'sdl', the libvirtd or virtqemud process will honor the following
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environment variables:
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either ``vnc`` or ``sdl``, the libvirtd or virtqemud process will honor the
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following environment variables:
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* ``SDL_AUDIODRIVER``
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Valid values are 'pulseaudio', 'esd', 'alsa' or 'arts'.
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Valid values are ``pulseaudio``, ``esd``, ``alsa`` or ``arts``.
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* ``QEMU_AUDIO_DRV``
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Valid values are 'pa', 'none', 'alsa', 'coreaudio', 'jack', 'oss',
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'sdl', 'spice' or 'wav'.
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Valid values are ``pa``, ``none``, ``alsa``, ``coreaudio``, ``jack``, ``oss``,
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``sdl``, ``spice`` or ``wav``.
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None audio backend
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^^^^^^^^^^^^^^^^^^
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The 'none' audio backend is a dummy backend that does not connect to
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The ``none`` audio backend is a dummy backend that does not connect to
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any host audio framework. It still allows a remote desktop server
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like VNC to send and receive audio though. This is the default backend
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when VNC graphics are enabled in QEMU.
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@ -7364,7 +7364,7 @@ when VNC graphics are enabled in QEMU.
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ALSA audio backend
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^^^^^^^^^^^^^^^^^^
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The 'alsa' audio type uses the ALSA host audio device framework.
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The ``alsa`` audio type uses the ALSA host audio device framework.
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The following additional attributes are permitted on the ``<input>``
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and ``<output>`` elements
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@ -7386,7 +7386,7 @@ and ``<output>`` elements
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Coreaudio audio backend
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^^^^^^^^^^^^^^^^^^^^^^^
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The 'coreaudio' audio backend delegates to a CoreAudio host audio framework
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The ``coreaudio`` audio backend delegates to a CoreAudio host audio framework
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for input and output on macOS.
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The following additional attributes are permitted on the ``<input>``
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@ -7409,7 +7409,7 @@ and ``<output>`` elements
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D-Bus audio backend
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^^^^^^^^^^^^^^^^^^^
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The 'dbus' audio backend does not connect to any host audio framework. It
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The ``dbus`` audio backend does not connect to any host audio framework. It
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exports a D-Bus interface when associated with a D-Bus display.
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:since:`Since 8.4.0, qemu`
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@ -7417,7 +7417,7 @@ exports a D-Bus interface when associated with a D-Bus display.
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Jack audio backend
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^^^^^^^^^^^^^^^^^^
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The 'jack' audio backend delegates to a Jack daemon for audio input
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The ``jack`` audio backend delegates to a Jack daemon for audio input
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and output.
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The following additional attributes are permitted on the ``<input>``
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@ -7453,7 +7453,7 @@ and ``<output>`` elements
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OSS audio backend
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^^^^^^^^^^^^^^^^^
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The 'oss' audio type uses the OSS host audio device framework.
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The ``oss`` audio type uses the OSS host audio device framework.
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The following additional attributes are permitted on the ``<audio>``
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element
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@ -7501,7 +7501,7 @@ and ``<output>`` elements
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PulseAudio audio backend
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^^^^^^^^^^^^^^^^^^^^^^^^
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The 'pulseaudio' audio backend delegates to a PulseAudio daemon audio input
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The ``pulseaudio`` audio backend delegates to a PulseAudio daemon audio input
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and output.
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The following additional attributes are permitted on the ``<audio>``
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@ -7538,7 +7538,7 @@ and ``<output>`` elements
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SDL audio backend
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^^^^^^^^^^^^^^^^^
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The 'sdl' audio backend delegates to the SDL library for audio input
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The ``sdl`` audio backend delegates to the SDL library for audio input
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and output.
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The following additional attributes are permitted on the ``<audio>``
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@ -7547,7 +7547,7 @@ element
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* ``driver``
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SDL audio driver. The ``name`` attribute specifies SDL driver name,
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one of 'esd', 'alsa', 'arts', 'pulseaudio'.
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one of ``esd``, ``alsa``, ``arts``, ``pulseaudio``.
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The following additional attributes are permitted on the ``<input>``
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and ``<output>`` elements
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@ -7569,7 +7569,7 @@ and ``<output>`` elements
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Spice audio backend
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^^^^^^^^^^^^^^^^^^^
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The 'spice' audio backend is similar to the 'none' backend in that
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The ``spice`` audio backend is similar to the ``none`` backend in that
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it does not connect to any host audio framework. It exclusively
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allows a SPICE server to send and receive audio. This is the default
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backend when SPICE graphics are enabled in QEMU.
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@ -7583,9 +7583,9 @@ backend when SPICE graphics are enabled in QEMU.
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File audio backend
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^^^^^^^^^^^^^^^^^^
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The 'file' audio backend is an output only driver which records
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The ``file`` audio backend is an output only driver which records
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audio to a file. The file format is implementation defined, and
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defaults to 'WAV' with QEMU.
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defaults to ``WAV`` with QEMU.
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::
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