Beta Pandorify Shuffle (basic spotify client)

[KickAss]

ello everyone,

im working on a native spotify client based on libspotify.
basically its already working, but i get stuttering sound output. and right now i dunno what to do about it. it's neither a cpu nor a ram nor a network problem. my best guess: it may be an alsa problem.

did anyone ever work with libspotify on the pandora? whats your experience so far?

 

[edgex004]

Could it be a caching issue? That was causing problems for Rasp Pi users. However, that seemed to be correlated with high CPU loads.

 

[KickAss]

yeah, i did read that, thanks.

i did not experience any significant increase in cpu or sd usage.
i did a testdrive with cache_location='' in config.py in order to avoid on disk caching. but that didnt change anything.


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[Eight Bit]

Great that you're working on this, I'd love spotify on my Pandora

 

[KickAss]

i just checked spoppy, a tiny cli spotify client. it suffers the same fate.

so my code aint the culprit. its either libspotify, pyspotify or alsa.
right now i have no idea how to fix that


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[edgex004]

Did you trying installing pyspotify with a couple different versions of python? There is firmware python 2, codeblocks python 2, and codeblocks python 3.

 

[KickAss]

im working with python 2.7 on slackware 14.1.

python 3 seems to cause memory issues with pyspotify.

libspotify's debug logging throws a lot of weird stuff at me. im working through that right now.
they need to release a new api asap.


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[KickAss]

mkay i just figured im running my slack on a class 4 sd card.

lol

caching and sd speed are probably the roots of all evil here.
just a perfect excuse to buy a couple of new sd cards

 

[Silent-Hunter]

I use Spotify and would like to use this!

 

[KickAss]

do not expect a full blown client at first. that would be an awful lot of work.

the idea is as follows:
ill provide a tiny gtk based app with basic playback capabilities: play/pause, next track, previous track. it will load a spotify playlist and play or shuffle through all the tracks in that list. hence the name: pandorify shuffle.

i may add features later.

 

[KickAss]

okay,
so i migrated my slack on a sandisk extreme class 10 sd card.
now here's a fun fact:
that didnt change anything.

im close to tears ;(

 

[edgex004]

Do you have Bluetooth and WiFi enabled? Enabling them together usually results in stuttering performance for both.

 

[KickAss]

nope, bluetooth is off.
im also using a wifi dongle.

 

[Eight Bit]

Does it stutter on all audio qualities?
More or less on higher rates?

Spottify does Ogg Vorbis in 3 qualities

• q3 (~96 Kbps)
• q5 (~160 Kbps)
• q9 (~320 Kbps)

 

[KickAss]

libspotify will always return raw pcm 44,1 khz dual channel 16 bit samples. no matter which quality setting.

its some sort of audio buffer problem. i dunno.

 

[KickAss]

i took a walk through dependencies hell today in order to sort things out.
i tried to get mopidy going and compiled ncmpcpp as the client.

mopidy is a mpd server with spotify support (as its also based on libspotify). unfortunately it complains about some missing gstreamer/gobject modules...

anyways, i doubt it would run any better than the most basic libspotify stuff (which i am using).

i will keep debugging libspotify. maybe theres something i can fix.