camera app consuming 30-40% cpu including when unfocused

[kevin gunn]

current build number: 113
device name: arale
channel: ubuntu-touch/rc-proposed/meizu.en
last update: 2015-09-15 17:18:23
version version: 113
version ubuntu: 20150915
version device: 20150818-0b38025
version custom: 20150814-887-8-46

this was a fresh flash of the image, i opened a bunch of apps, took a picture with camera app, dimissed the "photo roll" tutorial page, took another photo, brought some other app forward so camera app was not focused. Phone got hot, so i ran top and noticed camera never reduced (actually it's camera-service). Opening spread and quiting app was the only way to get stop camera-app hogging cpu. I only got this the first time through, i could not reproduce.

Also I noticed the camera app was not "black" in the spread but showed a last image (tbh, unsure if it was on photoroll...but i thot i went back to viewfinder mode)

I also notice, from playing around that camera cpu is ~50% just on photoroll...not doing anything, just let the phone idle on photoviewer and the cpu use remains pretty high (user could easily drain their battery)