PowerManagerService: Animate LCD backlight changes due to autobrightness support.

Change-Id: I9c242127df801125c30f399198d1f7e9c8579612
Signed-off-by: Mike Lockwood <lockwood@android.com>

1 files changed, 41 insertions, 17 deletions

diff --git a/services/java/com/android/server/PowerManagerService.java b/services/java/com/android/server/PowerManagerService.java
index 5c4aa79..927c1b3 100644
--- a/services/java/com/android/server/PowerManagerService.java
+++ b/services/java/com/android/server/PowerManagerService.java
@@ -131,6 +131,8 @@ class PowerManagerService extends IPowerManager.Stub
     static final boolean ANIMATE_KEYBOARD_LIGHTS = false;
     
     static final int ANIM_STEPS = 60/4;
+    // Slower animation for autobrightness changes
+    static final int AUTOBRIGHTNESS_ANIM_STEPS = 60;
 
     // These magic numbers are the initial state of the LEDs at boot.  Ideally
     // we should read them from the driver, but our current hardware returns 0
@@ -224,7 +226,7 @@ class PowerManagerService extends IPowerManager.Stub
 
     // could be either static or controllable at runtime
     private static final boolean mSpew = false;
-    private static final boolean mDebugLightSensor = false;
+    private static final boolean mDebugLightSensor = (false || mSpew);
 
     /*
     static PrintStream mLog;
@@ -1925,27 +1927,45 @@ class PowerManagerService extends IPowerManager.Stub
                     Log.d(TAG, "keyboardValue " + keyboardValue);
                 }
 
+                boolean startAnimation = false;
                 if (mScreenBrightnessOverride < 0) {
-                    mHardware.setLightBrightness_UNCHECKED(HardwareService.LIGHT_ID_BACKLIGHT,
-                            lcdValue);
-                }
-                mHardware.setLightBrightness_UNCHECKED(HardwareService.LIGHT_ID_BUTTONS,
-                        buttonValue);
-                mHardware.setLightBrightness_UNCHECKED(HardwareService.LIGHT_ID_KEYBOARD,
-                        keyboardValue);
-
-                // update our animation state
-                if (ANIMATE_SCREEN_LIGHTS) {
-                    mScreenBrightness.curValue = lcdValue;
-                    mScreenBrightness.animating = false;
+                    if (ANIMATE_SCREEN_LIGHTS) {
+                        if (mScreenBrightness.setTargetLocked(lcdValue,
+                                AUTOBRIGHTNESS_ANIM_STEPS, INITIAL_SCREEN_BRIGHTNESS,
+                                (int)mScreenBrightness.curValue)) {
+                            startAnimation = true;
+                        }
+                    } else {
+                        mHardware.setLightBrightness_UNCHECKED(HardwareService.LIGHT_ID_BACKLIGHT,
+                                lcdValue);
+                    }
                 }
                 if (ANIMATE_BUTTON_LIGHTS) {
-                    mButtonBrightness.curValue = buttonValue;
-                    mButtonBrightness.animating = false;
+                    if (mButtonBrightness.setTargetLocked(buttonValue,
+                            AUTOBRIGHTNESS_ANIM_STEPS, INITIAL_BUTTON_BRIGHTNESS,
+                            (int)mButtonBrightness.curValue)) {
+                        startAnimation = true;
+                    }
+                } else {
+                    mHardware.setLightBrightness_UNCHECKED(HardwareService.LIGHT_ID_BUTTONS,
+                            buttonValue);
                 }
                 if (ANIMATE_KEYBOARD_LIGHTS) {
-                    mKeyboardBrightness.curValue = keyboardValue;
-                    mKeyboardBrightness.animating = false;
+                    if (mKeyboardBrightness.setTargetLocked(keyboardValue,
+                            AUTOBRIGHTNESS_ANIM_STEPS, INITIAL_BUTTON_BRIGHTNESS,
+                            (int)mKeyboardBrightness.curValue)) {
+                        startAnimation = true;
+                    }
+                } else {
+                    mHardware.setLightBrightness_UNCHECKED(HardwareService.LIGHT_ID_KEYBOARD,
+                            keyboardValue);
+                }
+                if (startAnimation) {
+                    if (mDebugLightSensor) {
+                        Log.i(TAG, "lightSensorChangedLocked scheduling light animator");
+                    }
+                    mHandler.removeCallbacks(mLightAnimator);
+                    mHandler.post(mLightAnimator);
                 }
             }
         }
@@ -2041,6 +2061,7 @@ class PowerManagerService extends IPowerManager.Stub
         if (mAutoBrightessEnabled != enabled) {
             mAutoBrightessEnabled = enabled;
             // reset computed brightness
+            mLightSensorValue = -1;
             mLightSensorBrightness = -1;
 
             if (mHasHardwareAutoBrightness) {
@@ -2263,14 +2284,17 @@ class PowerManagerService extends IPowerManager.Stub
         if (ANIMATE_SCREEN_LIGHTS) {
             mScreenBrightness.curValue = brightness;
             mScreenBrightness.animating = false;
+            mScreenBrightness.targetValue = -1;
         }
         if (ANIMATE_KEYBOARD_LIGHTS) {
             mKeyboardBrightness.curValue = brightness;
             mKeyboardBrightness.animating = false;
+            mKeyboardBrightness.targetValue = -1;
         }
         if (ANIMATE_BUTTON_LIGHTS) {
             mButtonBrightness.curValue = brightness;
             mButtonBrightness.animating = false;
+            mButtonBrightness.targetValue = -1;
         }
     }