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      1 /*
      2  * Copyright (C) 2009 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.camera.gallery;
     18 
     19 import com.android.camera.BitmapManager;
     20 import com.android.camera.Util;
     21 
     22 import android.content.ContentResolver;
     23 import android.graphics.Bitmap;
     24 import android.graphics.BitmapFactory;
     25 import android.net.Uri;
     26 import android.os.ParcelFileDescriptor;
     27 import android.provider.MediaStore.Images;
     28 import android.util.Log;
     29 
     30 import java.io.FileNotFoundException;
     31 import java.io.IOException;
     32 import java.io.InputStream;
     33 
     34 /**
     35  * Represents a particular image and provides access to the underlying bitmap
     36  * and two thumbnail bitmaps as well as other information such as the id, and
     37  * the path to the actual image data.
     38  */
     39 public abstract class BaseImage implements IImage {
     40     private static final String TAG = "BaseImage";
     41     private static final int UNKNOWN_LENGTH = -1;
     42     protected ContentResolver mContentResolver;
     43 
     44     // Database field
     45     protected Uri mUri;
     46     protected long mId;
     47     protected String mDataPath;
     48     protected final int mIndex;
     49     protected String mMimeType;
     50     private final long mDateTaken;
     51     private String mTitle;
     52 
     53     protected BaseImageList mContainer;
     54 
     55     private int mWidth = UNKNOWN_LENGTH;
     56     private int mHeight = UNKNOWN_LENGTH;
     57 
     58     protected BaseImage(BaseImageList container, ContentResolver cr,
     59             long id, int index, Uri uri, String dataPath, String mimeType,
     60             long dateTaken, String title) {
     61         mContainer = container;
     62         mContentResolver = cr;
     63         mId = id;
     64         mIndex = index;
     65         mUri = uri;
     66         mDataPath = dataPath;
     67         mMimeType = mimeType;
     68         mDateTaken = dateTaken;
     69         mTitle = title;
     70     }
     71 
     72     public String getDataPath() {
     73         return mDataPath;
     74     }
     75 
     76     @Override
     77     public boolean equals(Object other) {
     78         if (other == null || !(other instanceof Image)) return false;
     79         return mUri.equals(((Image) other).mUri);
     80     }
     81 
     82     @Override
     83     public int hashCode() {
     84         return mUri.hashCode();
     85     }
     86 
     87     public Bitmap fullSizeBitmap(int minSideLength, int maxNumberOfPixels) {
     88         return fullSizeBitmap(minSideLength, maxNumberOfPixels,
     89                 IImage.ROTATE_AS_NEEDED, IImage.NO_NATIVE);
     90     }
     91 
     92     public Bitmap fullSizeBitmap(int minSideLength, int maxNumberOfPixels,
     93             boolean rotateAsNeeded, boolean useNative) {
     94         Uri url = mContainer.contentUri(mId);
     95         if (url == null) return null;
     96 
     97         Bitmap b = Util.makeBitmap(minSideLength, maxNumberOfPixels,
     98                 url, mContentResolver, useNative);
     99 
    100         if (b != null && rotateAsNeeded) {
    101             b = Util.rotate(b, getDegreesRotated());
    102         }
    103 
    104         return b;
    105     }
    106 
    107     public InputStream fullSizeImageData() {
    108         try {
    109             InputStream input = mContentResolver.openInputStream(mUri);
    110             return input;
    111         } catch (IOException ex) {
    112             return null;
    113         }
    114     }
    115 
    116     public Uri fullSizeImageUri() {
    117         return mUri;
    118     }
    119 
    120     public IImageList getContainer() {
    121         return mContainer;
    122     }
    123 
    124     public long getDateTaken() {
    125         return mDateTaken;
    126     }
    127 
    128     public int getDegreesRotated() {
    129         return 0;
    130     }
    131 
    132     public String getMimeType() {
    133         return mMimeType;
    134     }
    135 
    136     public String getTitle() {
    137         return mTitle;
    138     }
    139 
    140     private void setupDimension() {
    141         ParcelFileDescriptor input = null;
    142         try {
    143             input = mContentResolver.openFileDescriptor(mUri, "r");
    144             BitmapFactory.Options options = new BitmapFactory.Options();
    145             options.inJustDecodeBounds = true;
    146             BitmapManager.instance().decodeFileDescriptor(
    147                     input.getFileDescriptor(), options);
    148             mWidth = options.outWidth;
    149             mHeight = options.outHeight;
    150         } catch (FileNotFoundException ex) {
    151             mWidth = 0;
    152             mHeight = 0;
    153         } finally {
    154             Util.closeSilently(input);
    155         }
    156     }
    157 
    158     public int getWidth() {
    159         if (mWidth == UNKNOWN_LENGTH) setupDimension();
    160         return mWidth;
    161     }
    162 
    163     public int getHeight() {
    164         if (mHeight == UNKNOWN_LENGTH) setupDimension();
    165         return mHeight;
    166     }
    167 
    168     public Bitmap miniThumbBitmap() {
    169         Bitmap b = null;
    170         try {
    171             long id = mId;
    172             b = BitmapManager.instance().getThumbnail(mContentResolver, id,
    173                     Images.Thumbnails.MICRO_KIND, null, false);
    174         } catch (Throwable ex) {
    175             Log.e(TAG, "miniThumbBitmap got exception", ex);
    176             return null;
    177         }
    178         if (b != null) {
    179             b = Util.rotate(b, getDegreesRotated());
    180         }
    181         return b;
    182     }
    183 
    184     protected void onRemove() {
    185     }
    186 
    187     @Override
    188     public String toString() {
    189         return mUri.toString();
    190     }
    191 }
    192