Load wallpaper images on a bg thread (5271ea16) · Commits · e / os / android_frameworks_base

packages/WallpaperCropper/src/com/android/photos/BitmapRegionTileSource.java

+182 −56

Original line number	Diff line number	Diff line
		@@ -31,11 +31,13 @@ import android.os.Build.VERSION_CODES;
		import android.util.Log;

		import com.android.gallery3d.common.BitmapUtils;
		import com.android.gallery3d.exif.ExifInterface;
		import com.android.gallery3d.glrenderer.BasicTexture;
		import com.android.gallery3d.glrenderer.BitmapTexture;
		import com.android.photos.views.TiledImageRenderer;

		import java.io.BufferedInputStream;
		import java.io.FileNotFoundException;
		import java.io.IOException;
		import java.io.InputStream;

		@@ -53,7 +55,176 @@ public class BitmapRegionTileSource implements TiledImageRenderer.TileSource {
		private static final int GL_SIZE_LIMIT = 2048;
		// This must be no larger than half the size of the GL_SIZE_LIMIT
		// due to decodePreview being allowed to be up to 2x the size of the target
		private static final int MAX_PREVIEW_SIZE = 1024;
		public static final int MAX_PREVIEW_SIZE = GL_SIZE_LIMIT / 2;

		public static abstract class BitmapSource {
		private BitmapRegionDecoder mDecoder;
		private Bitmap mPreview;
		private int mPreviewSize;
		private int mRotation;
		public BitmapSource(int previewSize) {
		mPreviewSize = previewSize;
		}
		public void loadInBackground() {
		ExifInterface ei = new ExifInterface();
		if (readExif(ei)) {
		Integer ori = ei.getTagIntValue(ExifInterface.TAG_ORIENTATION);
		if (ori != null) {
		mRotation = ExifInterface.getRotationForOrientationValue(ori.shortValue());
		}
		}
		mDecoder = loadBitmapRegionDecoder();
		int width = mDecoder.getWidth();
		int height = mDecoder.getHeight();
		if (mPreviewSize != 0) {
		int previewSize = Math.min(mPreviewSize, MAX_PREVIEW_SIZE);
		BitmapFactory.Options opts = new BitmapFactory.Options();
		opts.inPreferredConfig = Bitmap.Config.ARGB_8888;
		opts.inPreferQualityOverSpeed = true;

		float scale = (float) previewSize / Math.max(width, height);
		opts.inSampleSize = BitmapUtils.computeSampleSizeLarger(scale);
		opts.inJustDecodeBounds = false;
		mPreview = loadPreviewBitmap(opts);
		}
		}

		public BitmapRegionDecoder getBitmapRegionDecoder() {
		return mDecoder;
		}

		public Bitmap getPreviewBitmap() {
		return mPreview;
		}

		public int getPreviewSize() {
		return mPreviewSize;
		}

		public int getRotation() {
		return mRotation;
		}

		public abstract boolean readExif(ExifInterface ei);
		public abstract BitmapRegionDecoder loadBitmapRegionDecoder();
		public abstract Bitmap loadPreviewBitmap(BitmapFactory.Options options);
		}

		public static class FilePathBitmapSource extends BitmapSource {
		private String mPath;
		public FilePathBitmapSource(String path, int previewSize) {
		super(previewSize);
		mPath = path;
		}
		@Override
		public BitmapRegionDecoder loadBitmapRegionDecoder() {
		try {
		return BitmapRegionDecoder.newInstance(mPath, true);
		} catch (IOException e) {
		Log.w("BitmapRegionTileSource", "getting decoder failed", e);
		return null;
		}
		}
		@Override
		public Bitmap loadPreviewBitmap(BitmapFactory.Options options) {
		return BitmapFactory.decodeFile(mPath, options);
		}
		@Override
		public boolean readExif(ExifInterface ei) {
		try {
		ei.readExif(mPath);
		return true;
		} catch (IOException e) {
		Log.w("BitmapRegionTileSource", "getting decoder failed", e);
		return false;
		}
		}
		}

		public static class UriBitmapSource extends BitmapSource {
		private Context mContext;
		private Uri mUri;
		public UriBitmapSource(Context context, Uri uri, int previewSize) {
		super(previewSize);
		mContext = context;
		mUri = uri;
		}
		private InputStream regenerateInputStream() throws FileNotFoundException {
		InputStream is = mContext.getContentResolver().openInputStream(mUri);
		return new BufferedInputStream(is);
		}
		@Override
		public BitmapRegionDecoder loadBitmapRegionDecoder() {
		try {
		return BitmapRegionDecoder.newInstance(regenerateInputStream(), true);
		} catch (FileNotFoundException e) {
		Log.e("BitmapRegionTileSource", "Failed to load URI " + mUri, e);
		return null;
		} catch (IOException e) {
		Log.e("BitmapRegionTileSource", "Failure while reading URI " + mUri, e);
		return null;
		}
		}
		@Override
		public Bitmap loadPreviewBitmap(BitmapFactory.Options options) {
		try {
		return BitmapFactory.decodeStream(regenerateInputStream(), null, options);
		} catch (FileNotFoundException e) {
		Log.e("BitmapRegionTileSource", "Failed to load URI " + mUri, e);
		return null;
		}
		}
		@Override
		public boolean readExif(ExifInterface ei) {
		try {
		ei.readExif(regenerateInputStream());
		return true;
		} catch (FileNotFoundException e) {
		Log.e("BitmapRegionTileSource", "Failed to load URI " + mUri, e);
		return false;
		} catch (IOException e) {
		Log.e("BitmapRegionTileSource", "Failure while reading URI " + mUri, e);
		return false;
		}
		}
		}

		public static class ResourceBitmapSource extends BitmapSource {
		private Resources mRes;
		private int mResId;
		public ResourceBitmapSource(Resources res, int resId, int previewSize) {
		super(previewSize);
		mRes = res;
		mResId = resId;
		}
		private InputStream regenerateInputStream() {
		InputStream is = mRes.openRawResource(mResId);
		return new BufferedInputStream(is);
		}
		@Override
		public BitmapRegionDecoder loadBitmapRegionDecoder() {
		try {
		return BitmapRegionDecoder.newInstance(regenerateInputStream(), true);
		} catch (IOException e) {
		Log.e("BitmapRegionTileSource", "Error reading resource", e);
		return null;
		}
		}
		@Override
		public Bitmap loadPreviewBitmap(BitmapFactory.Options options) {
		return BitmapFactory.decodeResource(mRes, mResId, options);
		}
		@Override
		public boolean readExif(ExifInterface ei) {
		try {
		ei.readExif(regenerateInputStream());
		return true;
		} catch (IOException e) {
		Log.e("BitmapRegionTileSource", "Error reading resource", e);
		return false;
		}
		}
		}

		BitmapRegionDecoder mDecoder;
		int mWidth;
		@@ -68,50 +239,23 @@ public class BitmapRegionTileSource implements TiledImageRenderer.TileSource {
		private BitmapFactory.Options mOptions;
		private Canvas mCanvas;

		public BitmapRegionTileSource(Context context, String path, int previewSize, int rotation) {
		this(null, context, path, null, 0, previewSize, rotation);
		}

		public BitmapRegionTileSource(Context context, Uri uri, int previewSize, int rotation) {
		this(null, context, null, uri, 0, previewSize, rotation);
		}

		public BitmapRegionTileSource(Resources res,
		Context context, int resId, int previewSize, int rotation) {
		this(res, context, null, null, resId, previewSize, rotation);
		}

		private BitmapRegionTileSource(Resources res,
		Context context, String path, Uri uri, int resId, int previewSize, int rotation) {
		public BitmapRegionTileSource(Context context, BitmapSource source) {
		mTileSize = TiledImageRenderer.suggestedTileSize(context);
		mRotation = rotation;
		try {
		if (path != null) {
		mDecoder = BitmapRegionDecoder.newInstance(path, true);
		} else if (uri != null) {
		InputStream is = context.getContentResolver().openInputStream(uri);
		BufferedInputStream bis = new BufferedInputStream(is);
		mDecoder = BitmapRegionDecoder.newInstance(bis, true);
		} else {
		InputStream is = res.openRawResource(resId);
		BufferedInputStream bis = new BufferedInputStream(is);
		mDecoder = BitmapRegionDecoder.newInstance(bis, true);
		}
		mRotation = source.getRotation();
		mDecoder = source.getBitmapRegionDecoder();
		mWidth = mDecoder.getWidth();
		mHeight = mDecoder.getHeight();
		} catch (IOException e) {
		Log.w("BitmapRegionTileSource", "ctor failed", e);
		}
		mOptions = new BitmapFactory.Options();
		mOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;
		mOptions.inPreferQualityOverSpeed = true;
		mOptions.inTempStorage = new byte[16 * 1024];
		int previewSize = source.getPreviewSize();
		if (previewSize != 0) {
		previewSize = Math.min(previewSize, MAX_PREVIEW_SIZE);
		// Although this is the same size as the Bitmap that is likely already
		// loaded, the lifecycle is different and interactions are on a different
		// thread. Thus to simplify, this source will decode its own bitmap.
		Bitmap preview = decodePreview(res, context, path, uri, resId, previewSize);
		Bitmap preview = decodePreview(source, previewSize);
		if (preview.getWidth() <= GL_SIZE_LIMIT && preview.getHeight() <= GL_SIZE_LIMIT) {
		mPreview = new BitmapTexture(preview);
		} else {
		@@ -215,33 +359,15 @@ public class BitmapRegionTileSource implements TiledImageRenderer.TileSource {
		* Note that the returned bitmap may have a long edge that's longer
		* than the targetSize, but it will always be less than 2x the targetSize
		*/
		private Bitmap decodePreview(
		Resources res, Context context, String file, Uri uri, int resId, int targetSize) {
		float scale = (float) targetSize / Math.max(mWidth, mHeight);
		mOptions.inSampleSize = BitmapUtils.computeSampleSizeLarger(scale);
		mOptions.inJustDecodeBounds = false;

		Bitmap result = null;
		if (file != null) {
		result = BitmapFactory.decodeFile(file, mOptions);
		} else if (uri != null) {
		try {
		InputStream is = context.getContentResolver().openInputStream(uri);
		BufferedInputStream bis = new BufferedInputStream(is);
		result = BitmapFactory.decodeStream(bis, null, mOptions);
		} catch (IOException e) {
		Log.w("BitmapRegionTileSource", "getting preview failed", e);
		}
		} else {
		result = BitmapFactory.decodeResource(res, resId, mOptions);
		}
		private Bitmap decodePreview(BitmapSource source, int targetSize) {
		Bitmap result = source.getPreviewBitmap();
		if (result == null) {
		return null;
		}

		// We need to resize down if the decoder does not support inSampleSize
		// or didn't support the specified inSampleSize (some decoders only do powers of 2)
		scale = (float) targetSize / (float) (Math.max(result.getWidth(), result.getHeight()));
		float scale = (float) targetSize / (float) (Math.max(result.getWidth(), result.getHeight()));

		if (scale <= 0.5) {
		result = BitmapUtils.resizeBitmapByScale(result, scale, true);

packages/WallpaperCropper/src/com/android/wallpapercropper/WallpaperCropActivity.java

+40 −4

Original line number	Diff line number	Diff line
		@@ -37,7 +37,6 @@ import android.graphics.RectF;
		import android.net.Uri;
		import android.os.AsyncTask;
		import android.os.Bundle;
		import android.util.FloatMath;
		import android.util.Log;
		import android.view.Display;
		import android.view.View;
		@@ -96,9 +95,6 @@ public class WallpaperCropActivity extends Activity {
		return;
		}

		int rotation = getRotationFromExif(this, imageUri);
		mCropView.setTileSource(new BitmapRegionTileSource(this, imageUri, 1024, rotation), null);
		mCropView.setTouchEnabled(true);
		// Action bar
		// Show the custom action bar view
		final ActionBar actionBar = getActionBar();
		@@ -111,6 +107,46 @@ public class WallpaperCropActivity extends Activity {
		cropImageAndSetWallpaper(imageUri, null, finishActivityWhenDone);
		}
		});

		// Load image in background
		setCropViewTileSource(
		new BitmapRegionTileSource.UriBitmapSource(this, imageUri, 1024), true, false);
		}

		public void setCropViewTileSource(final BitmapRegionTileSource.BitmapSource bitmapSource,
		final boolean touchEnabled, final boolean moveToLeft) {
		final Context context = WallpaperCropActivity.this;
		final View progressView = findViewById(R.id.loading);
		final AsyncTask<Void, Void, Void> loadBitmapTask = new AsyncTask<Void, Void, Void>() {
		protected Void doInBackground(Void...args) {
		if (!isCancelled()) {
		bitmapSource.loadInBackground();
		}
		return null;
		}
		protected void onPostExecute(Void arg) {
		if (!isCancelled()) {
		progressView.setVisibility(View.INVISIBLE);
		mCropView.setTileSource(
		new BitmapRegionTileSource(context, bitmapSource), null);
		mCropView.setTouchEnabled(touchEnabled);
		if (moveToLeft) {
		mCropView.moveToLeft();
		}
		}
		}
		};
		// We don't want to show the spinner every time we load an image, because that would be
		// annoying; instead, only start showing the spinner if loading the image has taken
		// longer than 1 sec (ie 1000 ms)
		progressView.postDelayed(new Runnable() {
		public void run() {
		if (loadBitmapTask.getStatus() != AsyncTask.Status.FINISHED) {
		progressView.setVisibility(View.VISIBLE);
		}
		}
		}, 1000);
		loadBitmapTask.execute();
		}

		public boolean enableRotation() {