screenshot - How to capture Android framebuffer in nexus5? -


I have to test the test in Nexus 5 (Android version 4.4.4), but the Nexus 5 Android framebuffer (/ dev / graphics / Fb0) Access method does not work in the past. (Nexus 4, ngps, a ..)

There is an empty data captured (black screen)

So, I have to find out how to capture a framebuffer in Nexus5.

Using the system to capture the currently used root visit, but the framebuffer can not write data

The roots, Jenny (application) / P>

How to reach the Android screen framebuffer? [My final goal is a framebuffer when image processing (gray / color model change etc ..) to rewrite my image. Framebuffer]

Thanks.


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