2serge mp3 decoding is not handled by the system on chip dsp but by a specialized codec dsp. this can be confermed by running
cat /sys/devices/platform/dsp/loadinfo
this leave 70% of the dsp for othr tasks such as scaling.. dspfbsink handles scaling i guess through the on chip dsp. I will try to make a driver for this. but since i am starting with next to no knowladge im sure it will take me to the end of jjanuary. january is also when ill have some free time.
thankyou