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audio/jack: add JACK client audiodev

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This commit adds a new audiodev backend to allow QEMU to use JACK as
both an audio sink and source.

Signed-off-by: Geoffrey McRae <geoff@hostfission.com>
Message-Id: <20200512101603.E3DB73A038E@moya.office.hostfission.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Geoffrey McRae 2020-04-29 15:53:58 +10:00 • committed by Gerd Hoffmann
parent 2f097e1964
commit 2e44570321
6 changed files with 746 additions and 2 deletions
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56
qapi/audio.json
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@ -152,6 +152,55 @@
'*out': 'AudiodevPerDirectionOptions',
'*latency': 'uint32' } }
##
# @AudiodevJackPerDirectionOptions:
#
# Options of the JACK backend that are used for both playback and
# recording.
#
# @server-name: select from among several possible concurrent server instances
# (default: environment variable $JACK_DEFAULT_SERVER if set, else "default")
#
# @client-name: the client name to use. The server will modify this name to
# create a unique variant, if needed unless @exact-name is true (default: the
# guest's name)
#
# @connect-ports: if set, a regular expression of JACK client port name(s) to
# monitor for and automatically connect to
#
# @start-server: start a jack server process if one is not already present
# (default: false)
#
# @exact-name: use the exact name requested otherwise JACK automatically
# generates a unique one, if needed (default: false)
#
# Since: 5.1
##
{ 'struct': 'AudiodevJackPerDirectionOptions',
'base': 'AudiodevPerDirectionOptions',
'data': {
'*server-name': 'str',
'*client-name': 'str',
'*connect-ports': 'str',
'*start-server': 'bool',
'*exact-name': 'bool' } }
##
# @AudiodevJackOptions:
#
# Options of the JACK audio backend.
#
# @in: options of the capture stream
#
# @out: options of the playback stream
#
# Since: 5.1
##
{ 'struct': 'AudiodevJackOptions',
'data': {
'*in': 'AudiodevJackPerDirectionOptions',
'*out': 'AudiodevJackPerDirectionOptions' } }
##
# @AudiodevOssPerDirectionOptions:
#
@ -297,11 +346,13 @@
#
# An enumeration of possible audio backend drivers.
#
# @jack: JACK audio backend (since 5.1)
#
# Since: 4.0
##
{ 'enum': 'AudiodevDriver',
'data': [ 'none', 'alsa', 'coreaudio', 'dsound', 'oss', 'pa', 'sdl',
'spice', 'wav' ] }
'data': [ 'none', 'alsa', 'coreaudio', 'dsound', 'jack', 'oss', 'pa',
'sdl', 'spice', 'wav' ] }
##
# @Audiodev:
@ -327,6 +378,7 @@
'alsa': 'AudiodevAlsaOptions',
'coreaudio': 'AudiodevCoreaudioOptions',
'dsound': 'AudiodevDsoundOptions',
'jack': 'AudiodevJackOptions',
'oss': 'AudiodevOssOptions',
'pa': 'AudiodevPaOptions',
'sdl': 'AudiodevGenericOptions',