From 750e8ec8af168afd318d47082b326b95f1cca517 Mon Sep 17 00:00:00 2001 From: Angus Kong Date: Mon, 6 May 2013 10:42:28 -0700 Subject: Improve bitmap load efficiency. Call prepare before/recycle after using image data. Change-Id: I3387c8ca68f57c3949fed2aaa3e26490e66c791a --- src/com/android/camera/data/LocalData.java | 421 +++++++++++++++++++++++++++++ 1 file changed, 421 insertions(+) create mode 100644 src/com/android/camera/data/LocalData.java (limited to 'src/com/android/camera/data/LocalData.java') diff --git a/src/com/android/camera/data/LocalData.java b/src/com/android/camera/data/LocalData.java new file mode 100644 index 000000000..1fda9eb67 --- /dev/null +++ b/src/com/android/camera/data/LocalData.java @@ -0,0 +1,421 @@ +/* + * Copyright (C) 2013 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.android.camera.data; + +import android.content.Context; +import android.database.Cursor; +import android.graphics.Bitmap; +import android.graphics.BitmapFactory; +import android.graphics.Matrix; +import android.graphics.drawable.Drawable; +import android.media.MediaMetadataRetriever; +import android.os.AsyncTask; +import android.provider.MediaStore.Images.ImageColumns; +import android.provider.MediaStore.Video; +import android.provider.MediaStore.Video.VideoColumns; +import android.util.Log; +import android.view.View; +import android.widget.ImageView; + +import com.android.camera.ui.FilmStripView; + +import java.util.Comparator; +import java.util.Date; + +/* An abstract interface that represents the local media data. Also implements + * Comparable interface so we can sort in DataAdapter. + */ +abstract interface LocalData extends FilmStripView.ImageData { + static final String TAG = "LocalData"; + + abstract View getView(Context c, int width, int height, Drawable placeHolder); + abstract long getDateTaken(); + abstract long getDateModified(); + abstract String getTitle(); + + static class NewestFirstComparator implements Comparator { + + private static int compare(long v1, long v2) { + if (v1 == -1) { + if (v2 == -1) return 0; + return -1; + } + if (v2 == -1) return 0; + + return ((v1 > v2) ? 1 : ((v1 < v2) ? -1 : 0)); + } + + @Override + public int compare(LocalData d1, LocalData d2) { + int cmp = compare(d1.getDateTaken(), d2.getDateTaken()); + if (cmp == 0) { + cmp = compare(d1.getDateModified(), d2.getDateModified()); + } + if (cmp == 0) { + cmp = d1.getTitle().compareTo(d2.getTitle()); + } + return cmp; + } + } + + /* + * A base class for all the local media files. The bitmap is loaded in background + * thread. Subclasses should implement their own background loading thread by + * subclassing BitmapLoadTask and overriding doInBackground() to return a bitmap. + */ + abstract static class LocalMediaData implements LocalData { + protected long id; + protected String title; + protected String mimeType; + protected long dateTaken; + protected long dateModified; + protected String path; + // width and height should be adjusted according to orientation. + protected int width; + protected int height; + + // true if this data has a corresponding visible view. + protected Boolean mUsing = false; + + @Override + public long getDateTaken() { + return dateTaken; + } + + @Override + public long getDateModified() { + return dateModified; + } + + @Override + public String getTitle() { + return new String(title); + } + + @Override + public int getWidth() { + return width; + } + + @Override + public int getHeight() { + return height; + } + + @Override + public boolean isActionSupported(int action) { + return false; + } + + @Override + public View getView(Context c, + int decodeWidth, int decodeHeight, Drawable placeHolder) { + ImageView v = new ImageView(c); + v.setImageDrawable(placeHolder); + + v.setScaleType(ImageView.ScaleType.FIT_XY); + BitmapLoadTask task = getBitmapLoadTask(v, decodeWidth, decodeHeight); + task.execute(); + return v; + } + + @Override + public void prepare() { + synchronized (mUsing) { + mUsing = true; + } + } + + @Override + public void recycle() { + synchronized (mUsing) { + mUsing = false; + } + } + + protected boolean isUsing() { + synchronized (mUsing) { + return mUsing; + } + } + + @Override + public abstract int getType(); + + protected abstract BitmapLoadTask getBitmapLoadTask( + ImageView v, int decodeWidth, int decodeHeight); + + /* + * An AsyncTask class that loads the bitmap in the background thread. + * Sub-classes should implement their own "protected Bitmap doInBackground(Void... )" + */ + protected abstract class BitmapLoadTask extends AsyncTask { + protected ImageView mView; + + protected BitmapLoadTask(ImageView v) { + mView = v; + } + + @Override + protected void onPostExecute(Bitmap bitmap) { + if (!isUsing()) return; + if (bitmap == null) { + Log.e(TAG, "Failed decoding bitmap for file:" + path); + return; + } + mView.setScaleType(ImageView.ScaleType.FIT_XY); + mView.setImageBitmap(bitmap); + } + } + } + + static class Photo extends LocalMediaData { + public static final int COL_ID = 0; + public static final int COL_TITLE = 1; + public static final int COL_MIME_TYPE = 2; + public static final int COL_DATE_TAKEN = 3; + public static final int COL_DATE_MODIFIED = 4; + public static final int COL_DATA = 5; + public static final int COL_ORIENTATION = 6; + public static final int COL_WIDTH = 7; + public static final int COL_HEIGHT = 8; + + static final String QUERY_ORDER = ImageColumns.DATE_TAKEN + " DESC, " + + ImageColumns._ID + " DESC"; + static final String[] QUERY_PROJECTION = { + ImageColumns._ID, // 0, int + ImageColumns.TITLE, // 1, string + ImageColumns.MIME_TYPE, // 2, string + ImageColumns.DATE_TAKEN, // 3, int + ImageColumns.DATE_MODIFIED, // 4, int + ImageColumns.DATA, // 5, string + ImageColumns.ORIENTATION, // 6, int, 0, 90, 180, 270 + ImageColumns.WIDTH, // 7, int + ImageColumns.HEIGHT, // 8, int + }; + + // 32K buffer. + private static final byte[] DECODE_TEMP_STORAGE = new byte[32 * 1024]; + + // from MediaStore, can only be 0, 90, 180, 270; + public int orientation; + + static Photo buildFromCursor(Cursor c) { + Photo d = new Photo(); + d.id = c.getLong(COL_ID); + d.title = c.getString(COL_TITLE); + d.mimeType = c.getString(COL_MIME_TYPE); + d.dateTaken = c.getLong(COL_DATE_TAKEN); + d.dateModified = c.getLong(COL_DATE_MODIFIED); + d.path = c.getString(COL_DATA); + d.orientation = c.getInt(COL_ORIENTATION); + d.width = c.getInt(COL_WIDTH); + d.height = c.getInt(COL_HEIGHT); + if (d.width <= 0 || d.height <= 0) { + Log.v(TAG, "warning! zero dimension for " + + d.path + ":" + d.width + "x" + d.height); + BitmapFactory.Options opts = decodeDimension(d.path); + if (opts != null) { + d.width = opts.outWidth; + d.height = opts.outHeight; + } else { + Log.v(TAG, "warning! dimension decode failed for " + d.path); + Bitmap b = BitmapFactory.decodeFile(d.path); + if (b == null) { + return null; + } + d.width = b.getWidth(); + d.height = b.getHeight(); + } + } + if (d.orientation == 90 || d.orientation == 270) { + int b = d.width; + d.width = d.height; + d.height = b; + } + return d; + } + + @Override + public String toString() { + return "Photo:" + ",data=" + path + ",mimeType=" + mimeType + + "," + width + "x" + height + ",orientation=" + orientation + + ",date=" + new Date(dateTaken); + } + + @Override + public int getType() { + return TYPE_PHOTO; + } + + @Override + protected BitmapLoadTask getBitmapLoadTask( + ImageView v, int decodeWidth, int decodeHeight) { + return new PhotoBitmapLoadTask(v, decodeWidth, decodeHeight); + } + + private static BitmapFactory.Options decodeDimension(String path) { + BitmapFactory.Options opts = new BitmapFactory.Options(); + opts.inJustDecodeBounds = true; + Bitmap b = BitmapFactory.decodeFile(path, opts); + if (b == null) { + return null; + } + return opts; + } + + private final class PhotoBitmapLoadTask extends BitmapLoadTask { + private int mDecodeWidth; + private int mDecodeHeight; + + public PhotoBitmapLoadTask(ImageView v, int decodeWidth, int decodeHeight) { + super(v); + mDecodeWidth = decodeWidth; + mDecodeHeight = decodeHeight; + } + + @Override + protected Bitmap doInBackground(Void... v) { + BitmapFactory.Options opts = null; + Bitmap b; + int sample = 1; + while (mDecodeWidth * sample < width + || mDecodeHeight * sample < height) { + sample *= 2; + } + opts = new BitmapFactory.Options(); + opts.inSampleSize = sample; + opts.inTempStorage = DECODE_TEMP_STORAGE; + if (isCancelled() || !isUsing()) { + return null; + } + b = BitmapFactory.decodeFile(path, opts); + if (orientation != 0) { + if (isCancelled() || !isUsing()) { + return null; + } + Matrix m = new Matrix(); + m.setRotate((float) orientation); + b = Bitmap.createBitmap(b, 0, 0, b.getWidth(), b.getHeight(), m, false); + } + return b; + } + } + } + + static class Video extends LocalMediaData { + public static final int COL_ID = 0; + public static final int COL_TITLE = 1; + public static final int COL_MIME_TYPE = 2; + public static final int COL_DATE_TAKEN = 3; + public static final int COL_DATE_MODIFIED = 4; + public static final int COL_DATA = 5; + public static final int COL_WIDTH = 6; + public static final int COL_HEIGHT = 7; + + static final String QUERY_ORDER = VideoColumns.DATE_TAKEN + " DESC, " + + VideoColumns._ID + " DESC"; + static final String[] QUERY_PROJECTION = { + VideoColumns._ID, // 0, int + VideoColumns.TITLE, // 1, string + VideoColumns.MIME_TYPE, // 2, string + VideoColumns.DATE_TAKEN, // 3, int + VideoColumns.DATE_MODIFIED, // 4, int + VideoColumns.DATA, // 5, string + VideoColumns.WIDTH, // 6, int + VideoColumns.HEIGHT, // 7, int + VideoColumns.RESOLUTION + }; + + static Video buildFromCursor(Cursor c) { + Video d = new Video(); + d.id = c.getLong(COL_ID); + d.title = c.getString(COL_TITLE); + d.mimeType = c.getString(COL_MIME_TYPE); + d.dateTaken = c.getLong(COL_DATE_TAKEN); + d.dateModified = c.getLong(COL_DATE_MODIFIED); + d.path = c.getString(COL_DATA); + d.width = c.getInt(COL_WIDTH); + d.height = c.getInt(COL_HEIGHT); + MediaMetadataRetriever retriever = new MediaMetadataRetriever(); + retriever.setDataSource(d.path); + String rotation = retriever.extractMetadata( + MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION); + if (d.width == 0 || d.height == 0) { + d.width = Integer.parseInt(retriever.extractMetadata( + MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH)); + d.height = Integer.parseInt(retriever.extractMetadata( + MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT)); + } + retriever.release(); + if (rotation.equals("90") || rotation.equals("270")) { + int b = d.width; + d.width = d.height; + d.height = b; + } + return d; + } + + @Override + public String toString() { + return "Video:" + ",data=" + path + ",mimeType=" + mimeType + + "," + width + "x" + height + ",date=" + new Date(dateTaken); + } + + @Override + public int getType() { + return TYPE_PHOTO; + } + + @Override + protected BitmapLoadTask getBitmapLoadTask( + ImageView v, int decodeWidth, int decodeHeight) { + return new VideoBitmapLoadTask(v); + } + + private final class VideoBitmapLoadTask extends BitmapLoadTask { + + public VideoBitmapLoadTask(ImageView v) { + super(v); + } + + @Override + protected Bitmap doInBackground(Void... v) { + if (isCancelled() || !isUsing()) { + return null; + } + android.media.MediaMetadataRetriever retriever = new MediaMetadataRetriever(); + retriever.setDataSource(path); + byte[] data = retriever.getEmbeddedPicture(); + Bitmap bitmap = null; + if (isCancelled() || !isUsing()) { + retriever.release(); + return null; + } + if (data != null) { + bitmap = BitmapFactory.decodeByteArray(data, 0, data.length); + } + if (bitmap == null) { + bitmap = (Bitmap) retriever.getFrameAtTime(); + } + retriever.release(); + return bitmap; + } + } + } +} + -- cgit v1.2.3