/*
 * 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 cyanogenmod.hardware;

import android.os.Parcel;
import android.os.Parcelable;

import cyanogenmod.os.Build;

/**
 * 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.
 *
 * A DisplayMode is referenced by it's identifier and carries an
 * associated name (up to the user to translate this value).
 */
public class DisplayMode implements Parcelable {
    public final int id;
    public final String name;

    public DisplayMode(int id, String name) {
        this.id = id;
        this.name = name;
    }

    private DisplayMode(Parcel parcel) {
        // Read parcelable version, make sure to define explicit changes
        // within {@link Build.PARCELABLE_VERSION);
        int parcelableVersion = parcel.readInt();
        int parcelableSize = parcel.readInt();
        int startPosition = parcel.dataPosition();

        // temp vars
        int tmpId = -1;
        String tmpName = null;

        if (parcelableVersion >= Build.CM_VERSION_CODES.BOYSENBERRY) {
            tmpId = parcel.readInt();
            if (parcel.readInt() != 0) {
                tmpName = parcel.readString();
            }
        }

        // set temps
        this.id = tmpId;
        this.name = tmpName;
        parcel.setDataPosition(startPosition + parcelableSize);
    }

    @Override
    public int describeContents() {
        return 0;
    }   

    @Override
    public void writeToParcel(Parcel out, int flags) {
        // Write parcelable version, make sure to define explicit changes
        // within {@link Build.PARCELABLE_VERSION);
        out.writeInt(Build.PARCELABLE_VERSION);

        // Inject a placeholder that will store the parcel size from this point on
        // (not including the size itself).
        int sizePosition = out.dataPosition();
        out.writeInt(0);
        int startPosition = out.dataPosition();

        // ==== BOYSENBERRY =====
        out.writeInt(id);
        if (name != null) {
            out.writeInt(1);
            out.writeString(name);
        } else {
            out.writeInt(0);
        }

        // Go back and write size
        int parcelableSize = out.dataPosition() - startPosition;
        out.setDataPosition(sizePosition);
        out.writeInt(parcelableSize);
        out.setDataPosition(startPosition + parcelableSize);
    }
    
    /** @hide */
    public static final Parcelable.Creator<DisplayMode> CREATOR =
            new Parcelable.Creator<DisplayMode>() {
        public DisplayMode createFromParcel(Parcel in) {
            return new DisplayMode(in);
        }

        @Override
        public DisplayMode[] newArray(int size) {
            return new DisplayMode[size];
        }
    };

}