Add HDR-HBM support into framework. (ede3ded5) · Commits · e / os / android_frameworks_base

core/java/android/hardware/display/BrightnessInfo.java

+23 −1

Original line number	Diff line number	Diff line
		@@ -33,7 +33,8 @@ public final class BrightnessInfo implements Parcelable {

		@IntDef(prefix = {"HIGH_BRIGHTNESS_MODE_"}, value = {
		HIGH_BRIGHTNESS_MODE_OFF,
		HIGH_BRIGHTNESS_MODE_SUNLIGHT
		HIGH_BRIGHTNESS_MODE_SUNLIGHT,
		HIGH_BRIGHTNESS_MODE_HDR
		})
		@Retention(RetentionPolicy.SOURCE)
		public @interface HighBrightnessMode {}
		@@ -50,6 +51,12 @@ public final class BrightnessInfo implements Parcelable {
		*/
		public static final int HIGH_BRIGHTNESS_MODE_SUNLIGHT = 1;

		/**
		* High brightness mode is ON due to high ambient light (sunlight). The high brightness range is
		* currently accessible to the user.
		*/
		public static final int HIGH_BRIGHTNESS_MODE_HDR = 2;

		/** Brightness */
		public final float brightness;

		@@ -73,6 +80,21 @@ public final class BrightnessInfo implements Parcelable {
		this.highBrightnessMode = highBrightnessMode;
		}

		/**
		* @return User-friendly string for specified {@link HighBrightnessMode} parameter.
		*/
		public static String hbmToString(@HighBrightnessMode int highBrightnessMode) {
		switch (highBrightnessMode) {
		case HIGH_BRIGHTNESS_MODE_OFF:
		return "off";
		case HIGH_BRIGHTNESS_MODE_HDR:
		return "hdr";
		case HIGH_BRIGHTNESS_MODE_SUNLIGHT:
		return "sunlight";
		}
		return "invalid";
		}

		@Override
		public int describeContents() {
		return 0;

services/core/java/com/android/server/display/AutomaticBrightnessController.java

+7 −1

Original line number	Diff line number	Diff line
		@@ -738,13 +738,19 @@ class AutomaticBrightnessController {
		float value = mBrightnessMapper.getBrightness(mAmbientLux, mForegroundAppPackageName,
		mForegroundAppCategory);
		float newScreenAutoBrightness = clampScreenBrightness(value);

		// The min/max range can change for brightness due to HBM. See if the current brightness
		// value still falls within the current range (which could have changed).
		final boolean currentBrightnessWithinAllowedRange = BrightnessSynchronizer.floatEquals(
		mScreenAutoBrightness, clampScreenBrightness(mScreenAutoBrightness));
		// If screenAutoBrightness is set, we should have screen{Brightening,Darkening}Threshold,
		// in which case we ignore the new screen brightness if it doesn't differ enough from the
		// previous one.
		if (!Float.isNaN(mScreenAutoBrightness)
		&& !isManuallySet
		&& newScreenAutoBrightness > mScreenDarkeningThreshold
		&& newScreenAutoBrightness < mScreenBrighteningThreshold) {
		&& newScreenAutoBrightness < mScreenBrighteningThreshold
		&& currentBrightnessWithinAllowedRange) {
		if (mLoggingEnabled) {
		Slog.d(TAG, "ignoring newScreenAutoBrightness: "
		+ mScreenDarkeningThreshold + " < " + newScreenAutoBrightness

services/core/java/com/android/server/display/DisplayBlanker.java

+4 −1

Original line number	Diff line number	Diff line
		@@ -20,5 +20,8 @@ package com.android.server.display;
		* Interface used to update the actual display state.
		*/
		public interface DisplayBlanker {
		void requestDisplayState(int displayId, int state, float brightness);
		/**
		* Requests the specified display state and brightness levels for the specified displayId.
		*/
		void requestDisplayState(int displayId, int state, float brightness, float sdrBrightness);
		}

services/core/java/com/android/server/display/DisplayDevice.java

+3 −1

Original line number	Diff line number	Diff line
		@@ -156,10 +156,12 @@ abstract class DisplayDevice {
		*
		* @param state The new display state.
		* @param brightnessState The new display brightnessState.
		* @param sdrBrightnessState The new display brightnessState for SDR layers.
		* @return A runnable containing work to be deferred until after we have
		* exited the critical section, or null if none.
		*/
		public Runnable requestDisplayStateLocked(int state, float brightnessState) {
		public Runnable requestDisplayStateLocked(int state, float brightnessState,
		float sdrBrightnessState) {
		return null;
		}

services/core/java/com/android/server/display/DisplayDeviceConfig.java

+23 −0

Original line number	Diff line number	Diff line
		@@ -104,6 +104,7 @@ public class DisplayDeviceConfig {
		private float mBrightnessRampSlowIncrease = Float.NaN;
		private Spline mBrightnessToBacklightSpline;
		private Spline mBacklightToBrightnessSpline;
		private Spline mBacklightToNitsSpline;
		private List<String> mQuirks;
		private boolean mIsHighBrightnessModeEnabled = false;
		private HighBrightnessModeData mHbmData;
		@@ -218,6 +219,20 @@ public class DisplayDeviceConfig {
		return mBrightnessToBacklightSpline.interpolate(brightness);
		}

		/**
		* Calculates the nits value for the specified backlight value if a mapping exists.
		*
		* @return The mapped nits or 0 if no mapping exits.
		*/
		public float getNitsFromBacklight(float backlight) {
		if (mBacklightToNitsSpline == null) {
		Slog.wtf(TAG, "requesting nits when no mapping exists.");
		return -1;
		}
		backlight = Math.max(backlight, mBacklightMinimum);
		return mBacklightToNitsSpline.interpolate(backlight);
		}

		/**
		* Return an array of equal length to backlight and nits, that covers the entire system
		* brightness range of 0.0-1.0.
		@@ -257,6 +272,13 @@ public class DisplayDeviceConfig {
		return mAmbientLightSensor;
		}

		/**
		* @return true if a nits to backlight mapping is defined in this config, false otherwise.
		*/
		public boolean hasNitsMapping() {
		return mBacklightToNitsSpline != null;
		}

		/**
		* @param quirkValue The quirk to test.
		* @return {@code true} if the specified quirk is present in this configuration,
		@@ -584,6 +606,7 @@ public class DisplayDeviceConfig {
		}
		mBrightnessToBacklightSpline = Spline.createSpline(mBrightness, mBacklight);
		mBacklightToBrightnessSpline = Spline.createSpline(mBacklight, mBrightness);
		mBacklightToNitsSpline = Spline.createSpline(mBacklight, mNits);
		}

		private void loadQuirks(DisplayConfiguration config) {