Use power mode of all independent displays to control power optimisations.
In the following cases, if there is any performance-optimised/independent active display (powered on) then power optimisations are disabled. If there is no performance-optimised/independent active display then power optimisations are enabled, even if there are power-optimised displays that are powered on.
* Physical or virtual display power mode change
* Physical or virtual display added or removed
Power optimisations include:
* Lowering thread priority
Bug: 342681202
Bug: 241285876
Flag: android.companion.virtualdevice.flags.correct_virtual_display_power_state
Test: manually tested with flag on/off using Android Auto Projected
Change-Id: I96068c8779dbfe2b51b4d9acd522b6cb3995681f
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 39e237b..8a0489f 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -735,6 +735,22 @@
// Called on the main thread in response to setPowerMode()
void setPowerModeInternal(const sp<DisplayDevice>& display, hal::PowerMode mode)
REQUIRES(mStateLock, kMainThreadContext);
+ void setVirtualDisplayPowerMode(const sp<DisplayDevice>& display, hal::PowerMode mode)
+ REQUIRES(mStateLock, kMainThreadContext);
+
+ // Returns whether to optimize globally for performance instead of power.
+ bool shouldOptimizeForPerformance() REQUIRES(mStateLock);
+
+ // Turns on power optimizations, for example when there are no displays to be optimized for
+ // performance.
+ static void enablePowerOptimizations(const char* whence);
+
+ // Turns off power optimizations.
+ static void disablePowerOptimizations(const char* whence);
+
+ // Enables or disables power optimizations depending on whether there are displays that should
+ // be optimized for performance.
+ void applyOptimizationPolicy(const char* whence) REQUIRES(mStateLock);
// Returns the preferred mode for PhysicalDisplayId if the Scheduler has selected one for that
// display. Falls back to the display's defaultModeId otherwise.