In my previous post I described my unsuccessful tries on getting simultaneous front and back camera access on a Galaxy S5. I just got a new HTC One M8 and was surprised that it also had a dual camera app (just like the S5) so I tried my code again.
It turned out that it actually works on the HTC device see video below.
The code which relies on OpenCV 2.4.9 can be found here: http://goo.gl/9aBgQI
Excursions into Augmented Reality and Mobile HCI 
Great work! Does your OpenCV/C++ code for dual cameras work with this device? I’m also interested in accessing both cameras, I even consider buying a One (M8) if above works!
Thank you!!
Hi,
the OpenCV Java API should work as it only wraps the Android API. Iam not sure about the C++ API. Anyways, you could simply forward the images via JNi into the native layer and use you C++ code from that point on.
Best,
Jens