I'm trying to play back MP3 files on my iMX6 Solo evaluation board using Qt. I can already play MP3s using mplayer and also using gstreamer with any of the following command lines:
mplayer /usr/sample.mp3
| gst-launch filesrc location=/usr/sample.mp3 ! mad ! alsasink | | | |
gst-launch filesrc location=/usr/sample.mp3 ! mp3parse ! ffdec_mp3 ! alsasink
However, when I try to use Qt5 (with ALSA and Pulseaudio support enabled) I can only play back wav files. For example, this code works fine:
qDebug() << "Play /usr/sample.wav.\n";
QMediaPlayer* player1 = new QMediaPlayer;
player1->setMedia(QUrl::fromLocalFile("/usr/sample.wav"));
player1->setVolume(100);
player1->play();
sleep(10);
delete(player1);
But this code gives me an error:
qDebug() << "Play /usr/sample.mp3.\n";
QMediaPlayer* player2 = new QMediaPlayer;
player2->setMedia(QUrl::fromLocalFile("/usr/sample.mp3"));
player2->setVolume(100);
player2->play();
sleep(20);
delete(player2);
The error message I get back is:
GStreamer; Unable to play - "file:///usr/sample.mp3"
Does anyone know what is going wrong or how to specify which sinks to use to Qt?
Some more information that might help is the output of "gst-inspect-0.10 | grep imx":
beep.imx: ac3: ac3
beep.imx: 3ca: ac3
beep.imx: beepdec: beep audio decoder
isink.imx: mfw_isink: IPU-based video sink
tvsrc.imx: tvsrc: v4l2 based tv src
vpu.imx: vpudec: VPU-based video decoder
vpu.imx: vpuenc: VPU-based video encoder
aiur.imx: webm: webm
aiur.imx: aiurdemux: aiur universal demuxer
ipucsc.imx: mfw_ipucsc: IPU-based video converter
v4lsrc.imx: mfw_v4lsrc: v4l2 based camera src
v4lsink.imx: mfw_v4lsink: v4l2 video sink
There is no mp3 codec there. Could this be the problem? Looking at other people's builds, they all seem to have this line:
beep.imx: beepdec.mp3: MP3 decoder
Thanks.
Ralph
