livedisplay: Add support for direct color balance control

 * We currently use the DisplayColorCalibration API for setting display
   temperature which makes a lot of guesses about what temperature
   the display really is. Some devices will support the new ColorBalance
   API (via QDCM or other mechanism), which offers a calibrated
   alternative. Add support for this, which will supercede DCC if
   available.
 * Additionally, define the available color temperature range as a
   set of overlayable values so this can be specified per-device.
   This range will be mapped to balance values using the power curve
   calculations in the new MathUtils class.

Change-Id: I99608c09807b747d962680293c7b0cee8d669003

1 files changed, 39 insertions, 0 deletions

diff --git a/sdk/src/java/cyanogenmod/hardware/CMHardwareManager.java b/sdk/src/java/cyanogenmod/hardware/CMHardwareManager.java
index 7765b94..d31ce9b 100644
--- a/sdk/src/java/cyanogenmod/hardware/CMHardwareManager.java
+++ b/sdk/src/java/cyanogenmod/hardware/CMHardwareManager.java
@@ -20,6 +20,7 @@ import android.os.IBinder;
 import android.os.RemoteException;
 import android.os.ServiceManager;
 import android.util.Log;
+import android.util.Range;
 
 import cyanogenmod.app.CMContextConstants;
 
@@ -129,6 +130,11 @@ public final class CMHardwareManager {
      */
     public static final int FEATURE_UNIQUE_DEVICE_ID = 0x10000;
 
+    /**
+     * Color balance
+     */
+    public static final int FEATURE_COLOR_BALANCE = 0x20000;
+
     private static final List<Integer> BOOLEAN_FEATURES = Arrays.asList(
         FEATURE_ADAPTIVE_BACKLIGHT,
         FEATURE_COLOR_ENHANCEMENT,
@@ -803,6 +809,39 @@ public final class CMHardwareManager {
         return false;
     }
 
+    public Range<Integer> getColorBalanceRange() {
+        int min = 0;
+        int max = 0;
+        try {
+            if (checkService()) {
+                min = sService.getColorBalanceMin();
+                max = sService.getColorBalanceMax();
+            }
+        } catch (RemoteException e) {
+        }
+        return new Range<Integer>(min, max);
+    }
+
+    public int getColorBalance() {
+        try {
+            if (checkService()) {
+                return sService.getColorBalance();
+            }
+        } catch (RemoteException e) {
+        }
+        return 0;
+    }
+
+    public boolean setColorBalance(int value) {
+        try {
+            if (checkService()) {
+                return sService.setColorBalance(value);
+            }
+        } catch (RemoteException e) {
+        }
+        return false;
+    }
+
     /**
      * @return true if service is valid
      */