potter: import some cmhw features

Change-Id: I20278917c6016e102ed8ef8d9b043c5ac4159274

cmhw/org/cyanogenmod/hardware/DisplayModeControl.java

@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2015 The CyanogenMod Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.cyanogenmod.hardware;
+
+import android.util.Log;
+
+import cyanogenmod.hardware.DisplayMode;
+
+/*
+ * Display Modes API
+ *
+ * A device may implement a list of preset display modes for different
+ * viewing intents, such as movies, photos, or extra vibrance. These
+ * modes may have multiple components such as gamma correction, white
+ * point adjustment, etc, but are activated by a single control point.
+ *
+ * This API provides support for enumerating and selecting the
+ * modes supported by the hardware.
+ */
+
+public class DisplayModeControl {
+
+    private static final boolean sHasNativeSupport =
+            LiveDisplayVendorImpl.hasNativeFeature(LiveDisplayVendorImpl.DISPLAY_MODES);
+
+    /*
+     * All HAF classes should export this boolean.
+     * Real implementations must, of course, return true
+     */
+    public static boolean isSupported() {
+        return sHasNativeSupport;
+    }
+
+    /*
+     * Get the list of available modes. A mode has an integer
+     * identifier and a string name.
+     *
+     * It is the responsibility of the upper layers to
+     * map the name to a human-readable format or perform translation.
+     */
+    public static DisplayMode[] getAvailableModes() {
+        if (!sHasNativeSupport) {
+            return new DisplayMode[0];
+        }
+        return LiveDisplayVendorImpl.native_getDisplayModes();
+    }
+
+    /*
+     * Get the name of the currently selected mode. This can return
+     * null if no mode is selected.
+     */
+    public static DisplayMode getCurrentMode() {
+        if (!sHasNativeSupport) {
+            return null;
+        }
+        return LiveDisplayVendorImpl.native_getCurrentDisplayMode();
+    }
+
+    /*
+     * Selects a mode from the list of available modes by it's
+     * string identifier. Returns true on success, false for
+     * failure. It is up to the implementation to determine
+     * if this mode is valid.
+     */
+    public static boolean setMode(DisplayMode mode, boolean makeDefault) {
+        if (!sHasNativeSupport) {
+            return false;
+        }
+        return LiveDisplayVendorImpl.native_setDisplayMode(mode, makeDefault);
+    }
+
+    /*
+     * Gets the preferred default mode for this device by it's
+     * string identifier. Can return null if there is no default.
+     */
+    public static DisplayMode getDefaultMode() {
+        if (!sHasNativeSupport) {
+            return null;
+        }
+        return LiveDisplayVendorImpl.native_getDefaultDisplayMode();
+    }
+}