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Unable to play Audio on embedded device using pulseaudio & Audio in QML



  • I'm using beagleboard-x15 based device .

    I'm able to play audio using aplay audio.wav & paplay audio.wav

    Starting pulseaudio on boot using this script

    #!/bin/sh
    
    if test -z "$DBUS_SESSION_BUS_ADDRESS" ; then
         echo "Starting dbus" 
         export $(dbus-launch)
    fi
    
    /usr/bin/pulseaudio -D --start
    

    Pulseaudio start and the status shows as below

    Oct 23 18:30:34 am57xx-evm systemd[1]: Starting pulseaudio.service...
    Oct 23 18:30:34 am57xx-evm pulseaudio[610]: Starting dbus
    Oct 23 18:30:35 am57xx-evm pulseaudio[610]: W: [pulseaudio] main.c: This program is not intended to be 
    run as root (unless --system is specified).
    Oct 23 18:30:35 am57xx-evm systemd[1]: Started pulseaudio.service.
    

    Using QML Audio to play

        Audio {
            id: alarmSound
            autoPlay: true
            volume: 1
            audioRole: Audio.AlarmRole
            loops: Audio.Infinite
            source = "qrc:/audio/HIGH.wav"
            onError: {
                console.log("onError:",errorString)
            }
            onStatusChanged: {
                console.log("onStatus:",status)
            }
        }
    

    filesystem plugin path contains only one file

    /usr/lib/qt5/plugins/audio/libqtaudio_alsa.so
    

    /etc/asound.conf contains

    # default Arago configuration
    

    /etc/pulse/client.conf contains

    # This file is part of PulseAudio.
    #
    # PulseAudio is free software; you can redistribute it and/or modify
    # it under the terms of the GNU Lesser General Public License as published by
    # the Free Software Foundation; either version 2 of the License, or
    # (at your option) any later version.
    #
    # PulseAudio is distributed in the hope that it will be useful, but
    # WITHOUT ANY WARRANTY; without even the implied warranty of
    # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    # General Public License for more details.
    #
    # You should have received a copy of the GNU Lesser General Public License
    # along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
    
    ## Configuration file for PulseAudio clients. See pulse-client.conf(5) for
    ## more information. Default values are commented out.  Use either ; or # for
    ## commenting.
    
    ; default-sink =
    ; default-source =
    ; default-server =
    ; default-dbus-server =
    
    ; autospawn = yes
     allow-autospawn-for-root = yes
    ; daemon-binary = /usr/bin/pulseaudio
    ; extra-arguments = --log-target=syslog
    
    ; cookie-file =
    
    ; enable-shm = yes
    ; shm-size-bytes = 0 # setting this 0 will use the system-default, usually 64 MiB
    
    ; auto-connect-localhost = no
    ; auto-connect-display = no
    

    /etc/pulse/daemon.conf contains

    # This file is part of PulseAudio.
    #
    # PulseAudio is free software; you can redistribute it and/or modify
    # it under the terms of the GNU Lesser General Public License as published by
    # the Free Software Foundation; either version 2 of the License, or
    # (at your option) any later version.
    #
    # PulseAudio is distributed in the hope that it will be useful, but
    # WITHOUT ANY WARRANTY; without even the implied warranty of
    # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    # General Public License for more details.
    #
    # You should have received a copy of the GNU Lesser General Public License
    # along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
    
    ## Configuration file for the PulseAudio daemon. See pulse-daemon.conf(5) for
    ## more information. Default values are commented out.  Use either ; or # for
    ## commenting.
    
    ; daemonize = no
    ; fail = yes
    ; allow-module-loading = yes
    ; allow-exit = yes
    ; use-pid-file = yes
    ; system-instance = no
    ; local-server-type = user
    ; enable-shm = yes
    ; enable-memfd = yes
    ; shm-size-bytes = 0 # setting this 0 will use the system-default, usually 64 MiB
    ; lock-memory = no
    ; cpu-limit = no
    
    ; high-priority = yes
    ; nice-level = -11
    
    ; realtime-scheduling = yes
    ; realtime-priority = 5
    
    ; exit-idle-time = 20
    ; scache-idle-time = 20
    
    ; dl-search-path = (depends on architecture)
    
    ; load-default-script-file = yes
    ; default-script-file = /etc/pulse/default.pa
    
    ; log-target = auto
    ; log-level = notice
    ; log-meta = no
    ; log-time = no
    ; log-backtrace = 0
    
    ; resample-method = speex-float-1
    ; enable-remixing = yes
    ; enable-lfe-remixing = no
    ; lfe-crossover-freq = 0
    
    ; flat-volumes = yes
    
    ; rlimit-fsize = -1
    ; rlimit-data = -1
    ; rlimit-stack = -1
    ; rlimit-core = -1
    ; rlimit-as = -1
    ; rlimit-rss = -1
    ; rlimit-nproc = -1
    ; rlimit-nofile = 256
    ; rlimit-memlock = -1
    ; rlimit-locks = -1
    ; rlimit-sigpending = -1
    ; rlimit-msgqueue = -1
    ; rlimit-nice = 31
    ; rlimit-rtprio = 9
    ; rlimit-rttime = 200000
    
    ; default-sample-format = s16le
    ; default-sample-rate = 44100
    ; alternate-sample-rate = 48000
    ; default-sample-channels = 2
    ; default-channel-map = front-left,front-right
    
    ; default-fragments = 4
    ; default-fragment-size-msec = 25
    
    ; enable-deferred-volume = yes
    ; deferred-volume-safety-margin-usec = 8000
    ; deferred-volume-extra-delay-usec = 0
    

    /etc/pulse/default.pa contains

    #!/usr/bin/pulseaudio -nF
    #
    # This file is part of PulseAudio.
    #
    # PulseAudio is free software; you can redistribute it and/or modify it
    # under the terms of the GNU Lesser General Public License as published by
    # the Free Software Foundation; either version 2 of the License, or
    # (at your option) any later version.
    #
    # PulseAudio is distributed in the hope that it will be useful, but
    # WITHOUT ANY WARRANTY; without even the implied warranty of
    # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    # General Public License for more details.
    #
    # You should have received a copy of the GNU Lesser General Public License
    # along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
    
    # This startup script is used only if PulseAudio is started per-user
    # (i.e. not in system mode)
    
    .fail
    
    ### Automatically restore the volume of streams and devices
    load-module module-device-restore
    load-module module-stream-restore
    load-module module-card-restore
    
    ### Automatically augment property information from .desktop files
    ### stored in /usr/share/application
    load-module module-augment-properties
    
    ### Should be after module-*-restore but before module-*-detect
    load-module module-switch-on-port-available
    
    ### Load audio drivers statically
    ### (it's probably better to not load these drivers manually, but instead
    ### use module-udev-detect -- see below -- for doing this automatically)
    #load-module module-alsa-sink
    #load-module module-alsa-source device=hw:1,0
    #load-module module-oss device="/dev/dsp" sink_name=output source_name=input
    #load-module module-oss-mmap device="/dev/dsp" sink_name=output source_name=input
    #load-module module-null-sink
    #load-module module-pipe-sink
    
    ### Automatically load driver modules depending on the hardware available
    .ifexists module-udev-detect.so
    load-module module-udev-detect
    .else
    ### Use the static hardware detection module (for systems that lack udev support)
    load-module module-detect
    .endif
    
    ### Automatically connect sink and source if JACK server is present
    .ifexists module-jackdbus-detect.so
    .nofail
    load-module module-jackdbus-detect channels=2
    .fail
    .endif
    
    ### Automatically load driver modules for Bluetooth hardware
    .ifexists module-bluetooth-policy.so
    load-module module-bluetooth-policy
    .endif
    
    .ifexists module-bluetooth-discover.so
    load-module module-bluetooth-discover
    .endif
    
    ### Load several protocols
    .ifexists module-esound-protocol-unix.so
    load-module module-esound-protocol-unix
    .endif
    load-module module-native-protocol-unix
    
    ### Network access (may be configured with paprefs, so leave this commented
    ### here if you plan to use paprefs)
    #load-module module-esound-protocol-tcp
    #load-module module-native-protocol-tcp
    #load-module module-zeroconf-publish
    
    ### Load the RTP receiver module (also configured via paprefs, see above)
    #load-module module-rtp-recv
    
    ### Load the RTP sender module (also configured via paprefs, see above)
    #load-module module-null-sink sink_name=rtp format=s16be channels=2 rate=44100 sink_properties="device.description='RTP Multicast Sink'"
    #load-module module-rtp-send source=rtp.monitor
    
    ### Load additional modules from GConf settings. This can be configured with the paprefs tool.
    ### Please keep in mind that the modules configured by paprefs might conflict with manually
    ### loaded modules.
    .ifexists module-gconf.so
    .nofail
    load-module module-gconf
    .fail
    .endif
    
    ### Automatically restore the default sink/source when changed by the user
    ### during runtime
    ### NOTE: This should be loaded as early as possible so that subsequent modules
    ### that look up the default sink/source get the right value
    load-module module-default-device-restore
    
    ### Automatically move streams to the default sink if the sink they are
    ### connected to dies, similar for sources
    load-module module-rescue-streams
    
    ### Make sure we always have a sink around, even if it is a null sink.
    load-module module-always-sink
    
    ### Honour intended role device property
    load-module module-intended-roles
    
    ### Automatically suspend sinks/sources that become idle for too long
    load-module module-suspend-on-idle
    
    ### If autoexit on idle is enabled we want to make sure we only quit
    ### when no local session needs us anymore.
    .ifexists module-console-kit.so
    load-module module-console-kit
    .endif
    .ifexists module-systemd-login.so
    load-module module-systemd-login
    .endif
    
    ### Enable positioned event sounds
    load-module module-position-event-sounds
    
    ### Cork music/video streams when a phone stream is active
    load-module module-role-cork
    
    ### Modules to allow autoloading of filters (such as echo cancellation)
    ### on demand. module-filter-heuristics tries to determine what filters
    ### make sense, and module-filter-apply does the heavy-lifting of
    ### loading modules and rerouting streams.
    load-module module-filter-heuristics
    load-module module-filter-apply
    
    ### Make some devices default
    #set-default-sink output
    #set-default-source input
    

    /etc/pulse/system.pa contains

    #!/usr/bin/pulseaudio -nF
    #
    # This file is part of PulseAudio.
    #
    # PulseAudio is free software; you can redistribute it and/or modify it
    # under the terms of the GNU Lesser General Public License as published by
    # the Free Software Foundation; either version 2 of the License, or
    # (at your option) any later version.
    #
    # PulseAudio is distributed in the hope that it will be useful, but
    # WITHOUT ANY WARRANTY; without even the implied warranty of
    # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    # General Public License for more details.
    #
    # You should have received a copy of the GNU Lesser General Public License
    # along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
    
    # This startup script is used only if PulseAudio is started in system
    # mode.
    
    ### Automatically load driver modules depending on the hardware available
    .ifexists module-udev-detect.so
    load-module module-udev-detect
    .else
    ### Use the static hardware detection module (for systems that lack udev/hal support)
    load-module module-detect
    .endif
    
    ### Load several protocols
    .ifexists module-esound-protocol-unix.so
    load-module module-esound-protocol-unix
    .endif
    load-module module-native-protocol-unix
    
    ### Automatically restore the volume of streams and devices
    load-module module-stream-restore
    load-module module-device-restore
    
    ### Automatically restore the default sink/source when changed by the user
    ### during runtime
    ### NOTE: This should be loaded as early as possible so that subsequent modules
    ### that look up the default sink/source get the right value
    load-module module-default-device-restore
    
    ### Automatically move streams to the default sink if the sink they are
    ### connected to dies, similar for sources
    load-module module-rescue-streams
    
    ### Make sure we always have a sink around, even if it is a null sink.
    load-module module-always-sink
    
    ### Automatically suspend sinks/sources that become idle for too long
    load-module module-suspend-on-idle
    
    ### Enable positioned event sounds
    load-module module-position-event-sounds
    

    But still unable to play audio



  • try to play the file with "aplay"


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