am 8e656df0: Merge "Add extras to AFD, send orientation metadata." into klp-dev (ac0cb359) · Commits · e / os / android_frameworks_base

api/current.txt

+2 −0

Original line number	Diff line number	Diff line
		@@ -7497,11 +7497,13 @@ package android.content.res {

		public class AssetFileDescriptor implements java.io.Closeable android.os.Parcelable {
		ctor public AssetFileDescriptor(android.os.ParcelFileDescriptor, long, long);
		ctor public AssetFileDescriptor(android.os.ParcelFileDescriptor, long, long, android.os.Bundle);
		method public void close() throws java.io.IOException;
		method public java.io.FileInputStream createInputStream() throws java.io.IOException;
		method public java.io.FileOutputStream createOutputStream() throws java.io.IOException;
		method public int describeContents();
		method public long getDeclaredLength();
		method public android.os.Bundle getExtras();
		method public java.io.FileDescriptor getFileDescriptor();
		method public long getLength();
		method public android.os.ParcelFileDescriptor getParcelFileDescriptor();

core/java/android/content/res/AssetFileDescriptor.java

+48 −8

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@

		package android.content.res;

		import android.os.Bundle;
		import android.os.Parcel;
		import android.os.ParcelFileDescriptor;
		import android.os.Parcelable;
		@@ -42,9 +43,11 @@ public class AssetFileDescriptor implements Parcelable, Closeable {
		private final ParcelFileDescriptor mFd;
		private final long mStartOffset;
		private final long mLength;
		private final Bundle mExtras;

		/**
		* Create a new AssetFileDescriptor from the given values.
		*
		* @param fd The underlying file descriptor.
		* @param startOffset The location within the file that the asset starts.
		* This must be 0 if length is UNKNOWN_LENGTH.
		@@ -53,6 +56,22 @@ public class AssetFileDescriptor implements Parcelable, Closeable {
		*/
		public AssetFileDescriptor(ParcelFileDescriptor fd, long startOffset,
		long length) {
		this(fd, startOffset, length, null);
		}

		/**
		* Create a new AssetFileDescriptor from the given values.
		*
		* @param fd The underlying file descriptor.
		* @param startOffset The location within the file that the asset starts.
		* This must be 0 if length is UNKNOWN_LENGTH.
		* @param length The number of bytes of the asset, or
		* {@link #UNKNOWN_LENGTH} if it extends to the end of the file.
		* @param extras additional details that can be used to interpret the
		* underlying file descriptor. May be null.
		*/
		public AssetFileDescriptor(ParcelFileDescriptor fd, long startOffset,
		long length, Bundle extras) {
		if (fd == null) {
		throw new IllegalArgumentException("fd must not be null");
		}
		@@ -63,6 +82,7 @@ public class AssetFileDescriptor implements Parcelable, Closeable {
		mFd = fd;
		mStartOffset = startOffset;
		mLength = length;
		mExtras = extras;
		}

		/**
		@@ -89,6 +109,14 @@ public class AssetFileDescriptor implements Parcelable, Closeable {
		return mStartOffset;
		}

		/**
		* Returns any additional details that can be used to interpret the
		* underlying file descriptor. May be null.
		*/
		public Bundle getExtras() {
		return mExtras;
		}

		/**
		* Returns the total number of bytes of this asset entry's data. May be
		* {@link #UNKNOWN_LENGTH} if the asset extends to the end of the file.
		@@ -308,22 +336,34 @@ public class AssetFileDescriptor implements Parcelable, Closeable {
		}
		}


		/* Parcelable interface */
		@Override
		public int describeContents() {
		return mFd.describeContents();
		}

		@Override
		public void writeToParcel(Parcel out, int flags) {
		mFd.writeToParcel(out, flags);
		out.writeLong(mStartOffset);
		out.writeLong(mLength);
		if (mExtras != null) {
		out.writeInt(1);
		out.writeBundle(mExtras);
		} else {
		out.writeInt(0);
		}
		}

		AssetFileDescriptor(Parcel src) {
		mFd = ParcelFileDescriptor.CREATOR.createFromParcel(src);
		mStartOffset = src.readLong();
		mLength = src.readLong();
		if (src.readInt() != 0) {
		mExtras = src.readBundle();
		} else {
		mExtras = null;
		}
		}

		public static final Parcelable.Creator<AssetFileDescriptor> CREATOR

core/java/android/provider/DocumentsContract.java

+72 −3

Original line number	Diff line number	Diff line
		@@ -28,7 +28,9 @@ import android.content.res.AssetFileDescriptor;
		import android.database.Cursor;
		import android.graphics.Bitmap;
		import android.graphics.BitmapFactory;
		import android.graphics.Matrix;
		import android.graphics.Point;
		import android.media.ExifInterface;
		import android.net.Uri;
		import android.os.Bundle;
		import android.os.CancellationSignal;
		@@ -42,8 +44,10 @@ import libcore.io.IoUtils;
		import libcore.io.Libcore;

		import java.io.BufferedInputStream;
		import java.io.File;
		import java.io.FileDescriptor;
		import java.io.FileInputStream;
		import java.io.FileNotFoundException;
		import java.io.IOException;
		import java.util.List;

		@@ -76,6 +80,15 @@ public final class DocumentsContract {
		/** {@hide} */
		public static final String EXTRA_PACKAGE_NAME = "android.content.extra.PACKAGE_NAME";

		/**
		* Included in {@link AssetFileDescriptor#getExtras()} when returned
		* thumbnail should be rotated.
		*
		* @see MediaStore.Images.ImageColumns#ORIENTATION
		* @hide
		*/
		public static final String EXTRA_ORIENTATION = "android.content.extra.ORIENTATION";

		/** {@hide} */
		public static final String ACTION_MANAGE_ROOT = "android.provider.action.MANAGE_ROOT";
		/** {@hide} */
		@@ -657,6 +670,7 @@ public final class DocumentsContract {
		openOpts.putParcelable(DocumentsContract.EXTRA_THUMBNAIL_SIZE, size);

		AssetFileDescriptor afd = null;
		Bitmap bitmap = null;
		try {
		afd = client.openTypedAssetFileDescriptor(documentUri, "image/*", openOpts, signal);

		@@ -688,21 +702,36 @@ public final class DocumentsContract {

		opts.inJustDecodeBounds = false;
		opts.inSampleSize = Math.min(widthSample, heightSample);
		Log.d(TAG, "Decoding with sample size " + opts.inSampleSize);
		if (is != null) {
		is.reset();
		return BitmapFactory.decodeStream(is, null, opts);
		bitmap = BitmapFactory.decodeStream(is, null, opts);
		} else {
		try {
		Libcore.os.lseek(fd, offset, SEEK_SET);
		} catch (ErrnoException e) {
		e.rethrowAsIOException();
		}
		return BitmapFactory.decodeFileDescriptor(fd, null, opts);
		bitmap = BitmapFactory.decodeFileDescriptor(fd, null, opts);
		}

		// Transform the bitmap if requested. We use a side-channel to
		// communicate the orientation, since EXIF thumbnails don't contain
		// the rotation flags of the original image.
		final Bundle extras = afd.getExtras();
		final int orientation = (extras != null) ? extras.getInt(EXTRA_ORIENTATION, 0) : 0;
		if (orientation != 0) {
		final int width = bitmap.getWidth();
		final int height = bitmap.getHeight();

		final Matrix m = new Matrix();
		m.setRotate(orientation, width / 2, height / 2);
		bitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, m, false);
		}
		} finally {
		IoUtils.closeQuietly(afd);
		}

		return bitmap;
		}

		/**
		@@ -770,4 +799,44 @@ public final class DocumentsContract {

		client.call(METHOD_DELETE_DOCUMENT, null, in);
		}

		/**
		* Open the given image for thumbnail purposes, using any embedded EXIF
		* thumbnail if available, and providing orientation hints from the parent
		* image.
		*
		* @hide
		*/
		public static AssetFileDescriptor openImageThumbnail(File file) throws FileNotFoundException {
		final ParcelFileDescriptor pfd = ParcelFileDescriptor.open(
		file, ParcelFileDescriptor.MODE_READ_ONLY);
		Bundle extras = null;

		try {
		final ExifInterface exif = new ExifInterface(file.getAbsolutePath());

		switch (exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, -1)) {
		case ExifInterface.ORIENTATION_ROTATE_90:
		extras = new Bundle(1);
		extras.putInt(EXTRA_ORIENTATION, 90);
		break;
		case ExifInterface.ORIENTATION_ROTATE_180:
		extras = new Bundle(1);
		extras.putInt(EXTRA_ORIENTATION, 180);
		break;
		case ExifInterface.ORIENTATION_ROTATE_270:
		extras = new Bundle(1);
		extras.putInt(EXTRA_ORIENTATION, 270);
		break;
		}

		final long[] thumb = exif.getThumbnailRange();
		if (thumb != null) {
		return new AssetFileDescriptor(pfd, thumb[0], thumb[1], extras);
		}
		} catch (IOException e) {
		}

		return new AssetFileDescriptor(pfd, 0, AssetFileDescriptor.UNKNOWN_LENGTH, extras);
		}
		}

packages/ExternalStorageProvider/src/com/android/externalstorage/ExternalStorageProvider.java

+2 −13

Original line number	Diff line number	Diff line
		@@ -27,6 +27,7 @@ import android.os.Environment;
		import android.os.ParcelFileDescriptor;
		import android.provider.DocumentsContract.Document;
		import android.provider.DocumentsContract.Root;
		import android.provider.DocumentsContract;
		import android.provider.DocumentsProvider;
		import android.webkit.MimeTypeMap;

		@@ -313,19 +314,7 @@ public class ExternalStorageProvider extends DocumentsProvider {
		String documentId, Point sizeHint, CancellationSignal signal)
		throws FileNotFoundException {
		final File file = getFileForDocId(documentId);
		final ParcelFileDescriptor pfd = ParcelFileDescriptor.open(
		file, ParcelFileDescriptor.MODE_READ_ONLY);

		try {
		final ExifInterface exif = new ExifInterface(file.getAbsolutePath());
		final long[] thumb = exif.getThumbnailRange();
		if (thumb != null) {
		return new AssetFileDescriptor(pfd, thumb[0], thumb[1]);
		}
		} catch (IOException e) {
		}

		return new AssetFileDescriptor(pfd, 0, AssetFileDescriptor.UNKNOWN_LENGTH);
		return DocumentsContract.openImageThumbnail(file);
		}

		private static String getTypeForFile(File file) {