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      1 /*
      2  * Copyright (C) 2015 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 android.renderscript.cts.refocus;
     18 
     19 import android.content.Context;
     20 import android.graphics.Bitmap;
     21 import android.graphics.BitmapFactory;
     22 import android.renderscript.cts.refocus.image.RangeInverseDepthTransform;
     23 import android.net.Uri;
     24 
     25 import java.io.FileNotFoundException;
     26 import java.io.IOException;
     27 import java.io.InputStream;
     28 
     29 public class DepthImage {
     30     private final String mFormat;
     31     private final double mFar;
     32     private final double mNear;
     33     private final Bitmap mDepthBitmap;
     34     private final double mBlurAtInfinity;
     35     private final double mFocalDistance;
     36     private final double mDepthOfFiled;
     37     private final double mFocalPointX;
     38     private final double mFocalPointY;
     39     private final DepthTransform mDepthTransform;
     40 
     41     public DepthImage(String format, double far, double near,
     42                       Bitmap depthBitmap, double blurAtInfinity,
     43                       double focalDistance, double depthOfField,
     44                       double focalPointX, double focalPointY,
     45                       DepthTransform depthTransform) {
     46         mFormat = format;
     47         mFar = far;
     48         mNear = near;
     49         mDepthBitmap = depthBitmap;
     50         mBlurAtInfinity = blurAtInfinity;
     51         mFocalDistance = focalDistance;
     52         mDepthOfFiled = depthOfField;
     53         mFocalPointX = focalPointX;
     54         mFocalPointY = focalPointY;
     55         mDepthTransform = depthTransform;
     56     }
     57 
     58     public static DepthImage createFromXMPMetadata(Context context, Uri image)
     59             throws IOException {
     60         InputStream input = context.getContentResolver().openInputStream(image);
     61         XmpDepthDecode decode = new XmpDepthDecode(input);
     62         return new DepthImage(decode.getFormat(), decode.getFar(),
     63                               decode.getNear(), decode.getDepthBitmap(),
     64                               decode.getBlurAtInfinity(),
     65                               decode.getFocalDistance(),
     66                               decode.getDepthOfField(),
     67                               decode.getFocalPointX(),
     68                               decode.getFocalPointY(),
     69                               decode.getDepthTransform());
     70     }
     71 
     72     public static DepthImage createFromDepthmap(Context context, Uri uriDepthmap)
     73             throws IOException {
     74         Bitmap bitmap = BitmapFactory.decodeStream(context.getContentResolver().openInputStream(uriDepthmap));
     75         if (bitmap == null) {
     76             throw new FileNotFoundException(uriDepthmap.toString());
     77         }
     78 
     79         double near = 12.0;
     80         double far = 120.0;
     81         DepthTransform transform = new RangeInverseDepthTransform((float)near, (float)far);
     82         return new DepthImage(RangeInverseDepthTransform.FORMAT,
     83                               far,
     84                               near,
     85                               bitmap, // depthmap
     86                               5.0,    // blur at ininity
     87                               15.0,   // focal distance
     88                               0.1,    // depth of field
     89                               0.5,    // x of focal point
     90                               0.5,    // y of focla point
     91                               transform);
     92     }
     93 
     94     public Bitmap getDepthBitmap() {
     95         return mDepthBitmap;
     96     }
     97 
     98     public DepthTransform getDepthTransform() { return mDepthTransform; }
     99 
    100     public String getFormat() {
    101         return mFormat;
    102     }
    103 
    104     public double getFar() {
    105         return mFar;
    106     }
    107 
    108     public double getNear() {
    109         return mNear;
    110     }
    111 
    112     public double getBlurAtInfinity() {
    113         return mBlurAtInfinity;
    114     }
    115 
    116     public double getFocalDistance() {
    117         return mFocalDistance;
    118     }
    119 
    120     public double getDepthOfField() {return mDepthOfFiled; }
    121 
    122     public double getFocalPointX() {
    123         return mFocalPointX;
    124     }
    125 
    126     public double getFocalPointY() {
    127         return mFocalPointY;
    128     }
    129 }
    130 
    131