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-rw-r--r--src/com/android/dreams/phototable/LocalSource.java175
1 files changed, 47 insertions, 128 deletions
diff --git a/src/com/android/dreams/phototable/LocalSource.java b/src/com/android/dreams/phototable/LocalSource.java
index 4b260db..8dbc079 100644
--- a/src/com/android/dreams/phototable/LocalSource.java
+++ b/src/com/android/dreams/phototable/LocalSource.java
@@ -15,60 +15,52 @@
*/
package com.android.dreams.phototable;
-import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
-import android.graphics.Bitmap;
-import android.graphics.BitmapFactory;
-import android.graphics.Matrix;
import android.provider.MediaStore;
-import android.util.Log;
import java.io.FileInputStream;
-import java.io.BufferedInputStream;
-import java.util.Collections;
+import java.io.InputStream;
+import java.util.Collection;
import java.util.LinkedList;
-import java.util.Random;
/**
- * Picks a random image from the local store.
+ * Loads images from the local store.
*/
-public class LocalSource {
+public class LocalSource extends PhotoSource {
private static final String TAG = "PhotoTable.LocalSource";
- static final boolean DEBUG = false;
- public static class ImageData {
- public String path;
- public int orientation;
- }
-
- private final ContentResolver mResolver;
- private final Context mContext;
- private final LinkedList<ImageData> mImageQueue;
- private final float mImageRatio;
- private final int mMaxQueueSize;
- private final Random mRNG;
private int mNextPosition;
+ public static final int TYPE = 2;
+
public LocalSource(Context context) {
- mContext = context;
- mResolver = mContext.getContentResolver();
+ super(context);
+ mSourceName = TAG;
mNextPosition = -1;
- mImageQueue = new LinkedList<ImageData>();
- mImageRatio = context.getResources().getInteger(R.integer.image_ratio) / 1000000f;
- mMaxQueueSize = context.getResources().getInteger(R.integer.image_queue_size);
- mRNG = new Random();
fillQueue();
}
- private void fillQueue() {
- log("filling queue");
- String[] projection = {MediaStore.Images.Media.DATA, MediaStore.Images.Media.ORIENTATION};
+ @Override
+ protected Collection<ImageData> findImages(int howMany) {
+ log(TAG, "finding images");
+ LinkedList<ImageData> foundImages = new LinkedList<ImageData>();
+
+ String[] projection = {MediaStore.Images.Media.DATA, MediaStore.Images.Media.ORIENTATION,
+ MediaStore.Images.Media.BUCKET_ID, MediaStore.Images.Media.BUCKET_DISPLAY_NAME};
+ String[] selectionArgs = {}; // settings go here
+ String selection = "";
+ for (String arg : selectionArgs) {
+ if (selection.length() > 0) {
+ selection += " OR ";
+ }
+ selection += MediaStore.Images.Media.BUCKET_ID + " = '" + arg + "'";
+ }
Cursor cursor = mResolver.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
- projection, null, null, null);
+ projection, selection, null, null);
if (cursor != null) {
- if (cursor.getCount() > mMaxQueueSize && mNextPosition == -1) {
- mNextPosition = mRNG.nextInt() % (cursor.getCount() - mMaxQueueSize);
+ if (cursor.getCount() > howMany && mNextPosition == -1) {
+ mNextPosition = mRNG.nextInt() % (cursor.getCount() - howMany);
}
if (mNextPosition == -1) {
mNextPosition = 0;
@@ -77,14 +69,18 @@ public class LocalSource {
int dataIndex = cursor.getColumnIndex(MediaStore.Images.Media.DATA);
int orientationIndex = cursor.getColumnIndex(MediaStore.Images.Media.ORIENTATION);
+ int bucketIndex = cursor.getColumnIndex(MediaStore.Images.Media.BUCKET_ID);
+ int nameIndex = cursor.getColumnIndex(MediaStore.Images.Media.BUCKET_DISPLAY_NAME);
+
if (dataIndex < 0) {
- log("can't find the DATA column!");
+ log(TAG, "can't find the DATA column!");
} else {
- while (mImageQueue.size() < mMaxQueueSize && !cursor.isAfterLast()) {
+ while (foundImages.size() < howMany && !cursor.isAfterLast()) {
ImageData data = new ImageData();
- data.path = cursor.getString(dataIndex);
+ data.type = TYPE;
+ data.url = cursor.getString(dataIndex);
data.orientation = cursor.getInt(orientationIndex);
- mImageQueue.offer(data);
+ foundImages.offer(data);
if (cursor.moveToNext()) {
mNextPosition++;
}
@@ -93,101 +89,24 @@ public class LocalSource {
mNextPosition = 0;
}
}
+
cursor.close();
}
- Collections.shuffle(mImageQueue);
- log("queue contains: " + mImageQueue.size() + " items.");
+ log(TAG, "found " + foundImages.size() + " items.");
+ return foundImages;
}
- public Bitmap next(BitmapFactory.Options options, int longSide, int shortSide) {
- log("decoding a local resource to " + longSide + ", " + shortSide);
- Bitmap image = null;
-
- if (mImageQueue.isEmpty()) {
- fillQueue();
- }
-
- if (!mImageQueue.isEmpty()) {
- ImageData data = mImageQueue.poll();
-
- FileInputStream fis = null;
- try {
- log("decoding:" + data.path);
- fis = new FileInputStream(data.path);
- options.inJustDecodeBounds = true;
- options.inSampleSize = 1;
- BitmapFactory.decodeFileDescriptor(fis.getFD(), null, options);
- int rawLongSide = Math.max(options.outWidth, options.outHeight);
- int rawShortSide = Math.min(options.outWidth, options.outHeight);
- log("I see bounds of " + rawLongSide + ", " + rawShortSide);
-
- float ratio = Math.max((float) longSide / (float) rawLongSide,
- (float) shortSide / (float) rawShortSide);
- while (ratio < 0.5) {
- options.inSampleSize *= 2;
- ratio *= 2;
- }
-
- log("decoding with inSampleSize " + options.inSampleSize);
- options.inJustDecodeBounds = false;
- image = BitmapFactory.decodeFileDescriptor(fis.getFD(), null, options);
- rawLongSide = Math.max(options.outWidth, options.outHeight);
- rawShortSide = Math.max(options.outWidth, options.outHeight);
- ratio = Math.max((float) longSide / (float) rawLongSide,
- (float) shortSide / (float) rawShortSide);
-
- if (ratio < 1.0f) {
- log("still too big, scaling down by " + ratio);
- options.outWidth = (int) (ratio * options.outWidth);
- options.outHeight = (int) (ratio * options.outHeight);
- image = Bitmap.createScaledBitmap(image,
- options.outWidth, options.outHeight,
- true);
- }
-
- if (data.orientation != 0) {
- log("rotated by " + data.orientation + ": fixing");
- if (data.orientation == 90 || data.orientation == 270) {
- int tmp = options.outWidth;
- options.outWidth = options.outHeight;
- options.outHeight = tmp;
- }
- Matrix matrix = new Matrix();
- matrix.setRotate(data.orientation,
- (float) image.getWidth() / 2,
- (float) image.getHeight() / 2);
- image = Bitmap.createBitmap(image, 0, 0,
- options.outHeight, options.outWidth,
- matrix, true);
- }
-
- log("returning bitmap sized to " + image.getWidth() + ", " + image.getHeight());
- } catch (Exception ex) {
- log(ex.toString());
- return null;
- } finally {
- try {
- if (fis != null) {
- fis.close();
- }
- } catch (Throwable t) {
- log("close fail: " + t.toString());
- }
- }
- } else {
- log("device has no local images.");
+ @Override
+ protected InputStream getStream(ImageData data) {
+ FileInputStream fis = null;
+ try {
+ log(TAG, "opening:" + data.url);
+ fis = new FileInputStream(data.url);
+ } catch (Exception ex) {
+ log(TAG, ex.toString());
+ fis = null;
}
- return image;
- }
-
- public void setSeed(long seed) {
- mRNG.setSeed(seed);
- }
-
- private void log(String message) {
- if (DEBUG) {
- Log.i(TAG, message);
- }
+ return (InputStream) fis;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-03 09:30:44 +0000