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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.filters;
     18 
     19 import android.graphics.Bitmap;
     20 import android.graphics.Matrix;
     21 import android.support.v8.renderscript.Allocation;
     22 import android.support.v8.renderscript.Element;
     23 import android.support.v8.renderscript.RenderScript;
     24 import android.support.v8.renderscript.Script.LaunchOptions;
     25 import android.support.v8.renderscript.Type;
     26 
     27 import com.android.gallery3d.R;
     28 import com.android.gallery3d.filtershow.pipeline.FilterEnvironment;
     29 
     30 public class ImageFilterChanSat extends ImageFilterRS {
     31     private static final String LOGTAG = "ImageFilterChanSat";
     32     private ScriptC_saturation mScript;
     33     private Bitmap mSourceBitmap;
     34 
     35     private static final int STRIP_SIZE = 64;
     36 
     37     FilterChanSatRepresentation mParameters = new FilterChanSatRepresentation();
     38     private Bitmap mOverlayBitmap;
     39 
     40     public ImageFilterChanSat() {
     41         mName = "ChannelSat";
     42     }
     43 
     44     @Override
     45     public FilterRepresentation getDefaultRepresentation() {
     46         return new FilterChanSatRepresentation();
     47     }
     48 
     49     @Override
     50     public void useRepresentation(FilterRepresentation representation) {
     51         mParameters = (FilterChanSatRepresentation) representation;
     52     }
     53 
     54     @Override
     55     protected void resetAllocations() {
     56 
     57     }
     58 
     59     @Override
     60     public void resetScripts() {
     61         if (mScript != null) {
     62             mScript.destroy();
     63             mScript = null;
     64         }
     65     }
     66     @Override
     67     protected void createFilter(android.content.res.Resources res, float scaleFactor,
     68                                 int quality) {
     69         createFilter(res, scaleFactor, quality, getInPixelsAllocation());
     70     }
     71 
     72     @Override
     73     protected void createFilter(android.content.res.Resources res, float scaleFactor,
     74                                 int quality, Allocation in) {
     75         RenderScript rsCtx = getRenderScriptContext();
     76 
     77         Type.Builder tb_float = new Type.Builder(rsCtx, Element.F32_4(rsCtx));
     78         tb_float.setX(in.getType().getX());
     79         tb_float.setY(in.getType().getY());
     80         mScript = new ScriptC_saturation(rsCtx, res, R.raw.saturation);
     81     }
     82 
     83 
     84     private Bitmap getSourceBitmap() {
     85         assert (mSourceBitmap != null);
     86         return mSourceBitmap;
     87     }
     88 
     89     @Override
     90     public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) {
     91         if (SIMPLE_ICONS && FilterEnvironment.QUALITY_ICON == quality) {
     92             return bitmap;
     93         }
     94 
     95         mSourceBitmap = bitmap;
     96         Bitmap ret = super.apply(bitmap, scaleFactor, quality);
     97         mSourceBitmap = null;
     98 
     99         return ret;
    100     }
    101 
    102     @Override
    103     protected void bindScriptValues() {
    104         int width = getInPixelsAllocation().getType().getX();
    105         int height = getInPixelsAllocation().getType().getY();
    106     }
    107 
    108 
    109 
    110     @Override
    111     protected void runFilter() {
    112         int []sat = new int[7];
    113         for(int i = 0;i<sat.length ;i ++){
    114           sat[i] =   mParameters.getValue(i);
    115         }
    116 
    117 
    118         int width = getInPixelsAllocation().getType().getX();
    119         int height = getInPixelsAllocation().getType().getY();
    120         Matrix m = getOriginalToScreenMatrix(width, height);
    121 
    122 
    123         mScript.set_saturation(sat);
    124 
    125         mScript.invoke_setupGradParams();
    126         runSelectiveAdjust(
    127                 getInPixelsAllocation(), getOutPixelsAllocation());
    128 
    129     }
    130 
    131     private void runSelectiveAdjust(Allocation in, Allocation out) {
    132         int width = in.getType().getX();
    133         int height = in.getType().getY();
    134 
    135         LaunchOptions options = new LaunchOptions();
    136         int ty;
    137         options.setX(0, width);
    138 
    139         for (ty = 0; ty < height; ty += STRIP_SIZE) {
    140             int endy = ty + STRIP_SIZE;
    141             if (endy > height) {
    142                 endy = height;
    143             }
    144             options.setY(ty, endy);
    145             mScript.forEach_selectiveAdjust(in, out, options);
    146             if (checkStop()) {
    147                 return;
    148             }
    149         }
    150     }
    151 
    152     private boolean checkStop() {
    153         RenderScript rsCtx = getRenderScriptContext();
    154         rsCtx.finish();
    155         if (getEnvironment().needsStop()) {
    156             return true;
    157         }
    158         return false;
    159     }
    160 }
    161 
    162