Audioplayer with VolumePrint

[DrNeuroSurg]

I'm using AudioPlayer, this works like a charm !!

So this is my chain:
...
ICYStream urlStream(wifi, password);
AudioSourceURL source(urlStream, urls, "audio/mp3");
I2SStream i2s;
MP3DecoderHelix decoder;
AudioPlayer player(source, i2s, decoder);
....

Now I would get the volume ...
How is it possible to add an additional MultiOutput to get the volume via VolumeOutput ?
Have I to subclass the AudioPlayer ? Or is there an easier way ?

urlstream - > decoder -> multi -> volume -> i2s
|
-> VolumeOutput

[pschatzmann]

Just define the MultiOutput as output instead of i2s when you create the player

[DrNeuroSurg]

Thank you !
Is this the right way ?

VolumePrint vp;
MultiOutput multi(i2s, vp);
AudioPlayer player(source, multi, decoder);

[pschatzmann]

Yes that should work: if you have more then 2 outputs, you would need to add the output with the add method in the setup();

[pschatzmann]

In this case you would not need to care and just leave it to the default by calling mlti.begin().

The decoder will call setAudioInfo() on the MultiOutput using the information from the encoded file and MultiOutput will then call setAudioInfo() on it's components.

[DrNeuroSurg]

Thank you again - but: MultiOutput.begin(); doesn't work, because
bool begin(AudioInfo info) is defined ...

[pschatzmann]

I don't understand: what is your problem with calling begin() ? It is available in the documentation...

[DrNeuroSurg]

Hmm. begin() is overridden in MultiOutput ..
I did this: multi.begin(player.audioInfo());

[DrNeuroSurg]

Another observation (if I'm right):

If I do this
AudioPlayer player(source, multi, decoder);
then the MultiOutput is inserted AFTER the (internal) VolumeControl in AudioPlayer ...

So I have
AudioSource -> Stream-copy -> EncodedAudioStream -> VolumeStream -> FadeStream -> MultiOutput -> Print

What I want to have is:

AudioSource -> Stream-copy -> EncodedAudioStream -> MultiOutput -> VolumeStream -> FadeStream -> Print