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/*
 * Copyright (C) 2013 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.wallpapers.photophase.effects;

import android.graphics.Color;
import android.media.effect.Effect;
import android.media.effect.EffectContext;
import android.media.effect.EffectFactory;

import org.cyanogenmod.wallpapers.photophase.preferences.PreferencesProvider.Preferences;

/**
 * A class that manages all the supported effects
 */
public class Effects {

    /**
     * Enumeration of the supported effects
     */
    public enum EFFECTS {
        /**
         * A random combination of all supported effects
         */
        RANDOM,
        /**
         * No effect
         */
        NO_EFFECT,
        /**
         * @see EffectFactory#EFFECT_AUTOFIX
         */
        AUTOFIX,
        /**
         * @see EffectFactory#EFFECT_CROSSPROCESS
         */
        CROSSPROCESS,
        /**
         * @see EffectFactory#EFFECT_DOCUMENTARY
         */
        DOCUMENTARY,
        /**
         * @see EffectFactory#EFFECT_DUOTONE
         */
        DUOTONE,
        /**
         * @see EffectFactory#EFFECT_FISHEYE
         */
        FISHEYE,
        /**
         * @see EffectFactory#EFFECT_GRAIN
         */
        GRAIN,
        /**
         * @see EffectFactory#EFFECT_GRAYSCALE
         */
        GRAYSCALE,
        /**
         * @see EffectFactory#EFFECT_LOMOISH
         */
        LOMOISH,
        /**
         * @see EffectFactory#EFFECT_NEGATIVE
         */
        NEGATIVE,
        /**
         * @see EffectFactory#EFFECT_POSTERIZE
         */
        POSTERIZE,
        /**
         * @see EffectFactory#EFFECT_SATURATE
         */
        SATURATE,
        /**
         * @see EffectFactory#EFFECT_SEPIA
         */
        SEPIA,
        /**
         * @see EffectFactory#EFFECT_TEMPERATURE
         */
        TEMPERATURE,
        /**
         * @see EffectFactory#EFFECT_TINT
         */
        TINT,
        /**
         * @see EffectFactory#EFFECT_VIGNETTE
         */
        VIGNETTE;
    }


    /**
     * Method that return the next effect to use with the picture.
     *
     * @param effectContext The android media effects context
     * @return Effect The next effect to use or null if no need to apply any effect
     */
    @SuppressWarnings("boxing")
    public static Effect getNextEffect(EffectContext effectContext) {
        // Get a new instance of a effect factory
        EffectFactory effectFactory = effectContext.getFactory();

        // Get an effect based on the user preference
        int type = Preferences.General.Effects.getEffectTypes();
        if (type == EFFECTS.RANDOM.ordinal()) {
            int low = EFFECTS.NO_EFFECT.ordinal();
            int hight = EFFECTS.values().length - 1;
            type = low + (int)(Math.random() * ((hight - low) + 1));
        }

        // Select the effect if is available
        Effect effect = null;
        if (type == EFFECTS.AUTOFIX.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_AUTOFIX)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_AUTOFIX);
                effect.setParameter("scale", 0.5f);
            }
        } else if (type == EFFECTS.CROSSPROCESS.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_CROSSPROCESS)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_CROSSPROCESS);
            }
        } else if (type == EFFECTS.DOCUMENTARY.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_DOCUMENTARY)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_DOCUMENTARY);
            }
        } else if (type == EFFECTS.DUOTONE.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_DUOTONE)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_DUOTONE);
                effect.setParameter("first_color", Color.parseColor("#FF8CACFF"));
                effect.setParameter("second_color", Color.WHITE);
            }
        } else if (type == EFFECTS.FISHEYE.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_FISHEYE)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_FISHEYE);
                effect.setParameter("scale", 1.0f);
            }
        } else if (type == EFFECTS.GRAIN.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_GRAIN)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_GRAIN);
                effect.setParameter("strength", 1.0f);
            }
        } else if (type == EFFECTS.GRAYSCALE.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_GRAYSCALE)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_GRAYSCALE);
            }
        } else if (type == EFFECTS.LOMOISH.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_LOMOISH)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_LOMOISH);
            }
        } else if (type == EFFECTS.NEGATIVE.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_NEGATIVE)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_NEGATIVE);
            }
        } else if (type == EFFECTS.POSTERIZE.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_POSTERIZE)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_POSTERIZE);
            }
        } else if (type == EFFECTS.SATURATE.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_SATURATE)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_SATURATE);
                effect.setParameter("scale", .5f);
            }
        } else if (type == EFFECTS.SEPIA.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_SEPIA)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_SEPIA);
            }
        } else if (type == EFFECTS.TEMPERATURE.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_TEMPERATURE)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_TEMPERATURE);
                effect.setParameter("scale", .9f);
            }
        } else if (type == EFFECTS.TINT.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_TINT)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_TINT);
            }
        } else if (type == EFFECTS.VIGNETTE.ordinal()) {
            if (EffectFactory.isEffectSupported(EffectFactory.EFFECT_VIGNETTE)) {
                effect = effectFactory.createEffect(EffectFactory.EFFECT_VIGNETTE);
                effect.setParameter("scale", .5f);
            }
        }
        return effect;
    }
}