How to use mpg123 on imx6ull14x14evk board

[mannsikchung]

I added mgp123 to local.conf as this

CORE_IMAGE_EXTRA_INSTALL += "\
mpg123 \
alsa-lib \
alsa-plugins \
alsa-state \
alsa-utils"
LICENSE_FLAGS_WHITELIST="commercial"

But, running mpg123 shows error as below

root@imx6ull14x14evk:~# mpg123 Happy.mp3

[../../../mpg123-1.22.4/src/output/pulse.c:84] error: Failed to open pulse audio output: Connection refused

[../../mpg123-1.22.4/src/audio.c:645] error: failed to open audio device

[../../mpg123-1.22.4/src/audio.c:180] error: Unable to find a working output module in this list: pulse

[../../mpg123-1.22.4/src/audio.c:545] error: Failed to open audio output module

[../../mpg123-1.22.4/src/mpg123.c:913] error: Failed to initialize output, goodbye.
root@imx6ull14x14evk:~#

For more information, I can play a wav file using aplay (one of alsa-utils).

How can I use mpg123 ?

[mannsikchung · Accepted solution]

Self Answer.

If you want to install package mpg123, you need to install also packagegroup-fsl-pulseaudio as below.

In your bb file.

IMAGE_INSTALL += "packagegroup-fsl-pulseaudio"

By this, bitbake include pulseaudio module, not only pulseaudio lib.

Best Regards.

Mannsik.

[igorpadykov]

Hi Mannsik

according to http://mpg123.de/faq.shtml

one can try to test as
mpg123 -a hw:0,0 myfile.mp3

additionally one can try with gstreamer:
https://github.com/openembedded/openembedded-core/commit/7691d048ccbb1cbde5ffba7977c799a91349cb3d

Best regards
igor
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[mannsikchung]

Hi Igor

And, In my tryial

• gstreamer is blacklisted.
• ffmpeg does not contain ffplay.

So I couln't try gstreamer and ffplay.

BR.

Mannsik

[mannsikchung]

Hi Igor

Thank you for your reply.

But, no difference with option, you told, 

$ mpg123 -a hw:0.0 myfile.mp3

I think my evk board has only one audio device.

But, with below(as common use), some BBs can play MP3.

mpg123 myfile.mp3

I tried below BBs and some of BB could play mp3 files with mpg123.

• bitbake core-image-minimal : Didn't work.
• bitbake core-image-base : Didn't work.
• bitbake core-image-sato : Work...!!! ♡  (Could play mp3 file with mpg123)
• bitbake fsl-image-machine-test : Didn't work.
• bitbake fsl-image-gui : Work...!!! ♡

And, I didn't try fsl-image-qt5, because my evk is iMX6ULL.

I compared bb files and found that, BBs who can play mp3 has below FEATURE

IMAGE_FEATURES += hwcodecs

Is this the factor to enable play mp3?

Best Regards.

Mannsik

[mannsikchung]

hwcodecs is not the factor..