service/cam: Implement Vsync interrupt events #5116
Merged
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Hopefully fixes #3739, fixes #3794, fixes #4449.
cc @RocketRobz @SatoshiOkujun @xxx169
According to HW tests, this vsync event is signaled for activated cameras at about the same frequency as the frame rate. The last 5 vsync timings are recorded (in microseconds) and can be retrieved with the service function.
Also, corrected the default frame_rate to 15, according to HW test.
This should fix the missing camera images in certain games. Note that, SynchronizeVsyncTiming is still stubbed currently.
This change is