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IMX28 gstreamer equalizer performance

Question asked by Tom Deacon on Jan 23, 2014



I am writing a app using gstreamer 0.10.35 on the IMX28 eval kit for audio playback only. The following command to play a .wav file works fine.


# gst-launch filesrc location=test.wav ! decodebin ! alsasink


If I try adding the equalizer-10bands plugin into the pipeline then audio playback starts to stutter badly and CPU usage jumps to 100%.


# gst-launch filesrc location=test.wav ! decodebin ! equalizer-10bands band0=1.0 ! alsasink


The 3 band equalizer is usable but still uses up a lot of CPU.


My question is there something I can do to improve the performance? Or is the IMX28 just not capable of doing software equalization?