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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.gallery3d.filtershow.pipeline;
     18 
     19 import android.graphics.Bitmap;
     20 import android.graphics.Canvas;
     21 import android.renderscript.Allocation;
     22 
     23 import com.android.gallery3d.app.Log;
     24 import com.android.gallery3d.filtershow.cache.BitmapCache;
     25 import com.android.gallery3d.filtershow.filters.FilterRepresentation;
     26 import com.android.gallery3d.filtershow.filters.FilterUserPresetRepresentation;
     27 import com.android.gallery3d.filtershow.filters.FiltersManagerInterface;
     28 import com.android.gallery3d.filtershow.filters.ImageFilter;
     29 
     30 import java.lang.ref.WeakReference;
     31 import java.util.HashMap;
     32 
     33 public class FilterEnvironment {
     34     private static final String LOGTAG = "FilterEnvironment";
     35     private ImagePreset mImagePreset;
     36     private float mScaleFactor;
     37     private int mQuality;
     38     private FiltersManagerInterface mFiltersManager;
     39     private PipelineInterface mPipeline;
     40     private volatile boolean mStop = false;
     41     private BitmapCache mBitmapCache;
     42 
     43     public static final int QUALITY_ICON = 0;
     44     public static final int QUALITY_PREVIEW = 1;
     45     public static final int QUALITY_FINAL = 2;
     46 
     47     public synchronized boolean needsStop() {
     48         return mStop;
     49     }
     50 
     51     public synchronized void setStop(boolean stop) {
     52         this.mStop = stop;
     53     }
     54 
     55     private HashMap<Integer, Integer>
     56                     generalParameters = new HashMap<Integer, Integer>();
     57 
     58     public void setBitmapCache(BitmapCache cache) {
     59         mBitmapCache = cache;
     60     }
     61 
     62     public void cache(Buffer buffer) {
     63         mBitmapCache.cache(buffer);
     64     }
     65 
     66     public void cache(Bitmap bitmap) {
     67         mBitmapCache.cache(bitmap);
     68     }
     69 
     70     public Bitmap getBitmap(int w, int h, int type) {
     71         return mBitmapCache.getBitmap(w, h, type);
     72     }
     73 
     74     public Bitmap getBitmapCopy(Bitmap source, int type) {
     75         return mBitmapCache.getBitmapCopy(source, type);
     76     }
     77 
     78     public void setImagePreset(ImagePreset imagePreset) {
     79         mImagePreset = imagePreset;
     80     }
     81 
     82     public ImagePreset getImagePreset() {
     83         return mImagePreset;
     84     }
     85 
     86     public void setScaleFactor(float scaleFactor) {
     87         mScaleFactor = scaleFactor;
     88     }
     89 
     90     public float getScaleFactor() {
     91         return mScaleFactor;
     92     }
     93 
     94     public void setQuality(int quality) {
     95         mQuality = quality;
     96     }
     97 
     98     public int getQuality() {
     99         return mQuality;
    100     }
    101 
    102     public void setFiltersManager(FiltersManagerInterface filtersManager) {
    103         mFiltersManager = filtersManager;
    104     }
    105 
    106     public FiltersManagerInterface getFiltersManager() {
    107         return mFiltersManager;
    108     }
    109 
    110     public void applyRepresentation(FilterRepresentation representation,
    111                                     Allocation in, Allocation out) {
    112         ImageFilter filter = mFiltersManager.getFilterForRepresentation(representation);
    113         filter.useRepresentation(representation);
    114         filter.setEnvironment(this);
    115         if (filter.supportsAllocationInput()) {
    116             filter.apply(in, out);
    117         }
    118         filter.setGeneralParameters();
    119         filter.setEnvironment(null);
    120     }
    121 
    122     public Bitmap applyRepresentation(FilterRepresentation representation, Bitmap bitmap) {
    123         if (representation instanceof FilterUserPresetRepresentation) {
    124             // we allow instances of FilterUserPresetRepresentation in a preset only to know if one
    125             // has been applied (so we can show this in the UI). But as all the filters in them are
    126             // applied directly they do not themselves need to do any kind of filtering.
    127             return bitmap;
    128         }
    129         ImageFilter filter = mFiltersManager.getFilterForRepresentation(representation);
    130         if (filter == null){
    131             Log.e(LOGTAG,"No ImageFilter for "+representation.getSerializationName());
    132         }
    133         filter.useRepresentation(representation);
    134         filter.setEnvironment(this);
    135         Bitmap ret = filter.apply(bitmap, mScaleFactor, mQuality);
    136         if (bitmap != ret) {
    137             cache(bitmap);
    138         }
    139         filter.setGeneralParameters();
    140         filter.setEnvironment(null);
    141         return ret;
    142     }
    143 
    144     public PipelineInterface getPipeline() {
    145         return mPipeline;
    146     }
    147 
    148     public void setPipeline(PipelineInterface cachingPipeline) {
    149         mPipeline = cachingPipeline;
    150     }
    151 
    152     public synchronized void clearGeneralParameters() {
    153         generalParameters = null;
    154     }
    155 
    156     public synchronized Integer getGeneralParameter(int id) {
    157         if (generalParameters == null || !generalParameters.containsKey(id)) {
    158             return null;
    159         }
    160         return generalParameters.get(id);
    161     }
    162 
    163     public synchronized void setGeneralParameter(int id, int value) {
    164         if (generalParameters == null) {
    165             generalParameters = new HashMap<Integer, Integer>();
    166         }
    167 
    168         generalParameters.put(id, value);
    169     }
    170 
    171     public BitmapCache getBimapCache() {
    172         return mBitmapCache;
    173     }
    174 }
    175