tree 94f4cb874aef7b62f930988186ff2b98ef9e62c0
parent 9d41bd7c39725289c4e996654105eb76c13bd8d8
author chaviw <chaviw@google.com> 1556667912 -0700
committer chaviw <chaviw@google.com> 1557344059 -0700

Added captureScreen function for displayId or layerStack

Previously, screencap shell command could accept a display id as an argument.
It would use the id to look up information about the display (displayToken,
orientation, colorMode) by making requests into SurfaceFlinger. Since those
requests only worked for physical display ids, screencap didn't work to capture
virtual displays.

Instead of adding new methods to look up display information for a virtual
display, this change just adds a new captureScreen function in SurfaceFlinger
that accepts a displayId or layerStack and handles getting the default info
for the requested display. This works for both physical and virtual displays.

Test: adb shell screencap -d <layerStack for virt display>
Fixes: 130974213
Change-Id: I24b7558c973a057414c6b4f81ab1d60152fff38d