Updating the ExifParsing code (2563b3b9) · Commits · e / os / android_packages_apps_Trebuchet

WallpaperPicker/src/com/android/gallery3d/common/BitmapUtils.java

+7 −21

Original line number	Diff line number	Diff line
		@@ -21,8 +21,6 @@ import android.content.res.Resources;
		import android.net.Uri;
		import android.util.Log;

		import com.android.gallery3d.exif.ExifInterface;

		import java.io.BufferedInputStream;
		import java.io.IOException;
		import java.io.InputStream;
		@@ -42,38 +40,26 @@ public class BitmapUtils {
		}

		public static int getRotationFromExif(Context context, Uri uri) {
		return BitmapUtils.getRotationFromExifHelper(null, 0, context, uri);
		return BitmapUtils.getRotationFromExifHelper(null, 0, uri, context);
		}

		public static int getRotationFromExif(Resources res, int resId) {
		return BitmapUtils.getRotationFromExifHelper(res, resId, null, null);
		public static int getRotationFromExif(Resources res, int resId, Context context) {
		return BitmapUtils.getRotationFromExifHelper(res, resId, null, context);
		}

		private static int getRotationFromExifHelper(Resources res, int resId, Context context, Uri uri) {
		ExifInterface ei = new ExifInterface();
		private static int getRotationFromExifHelper(Resources res, int resId,
		Uri uri, Context context) {
		InputStream is = null;
		BufferedInputStream bis = null;
		try {
		if (uri != null) {
		is = context.getContentResolver().openInputStream(uri);
		bis = new BufferedInputStream(is);
		ei.readExif(bis);
		} else {
		is = res.openRawResource(resId);
		bis = new BufferedInputStream(is);
		ei.readExif(bis);
		}
		Integer ori = ei.getTagIntValue(ExifInterface.TAG_ORIENTATION);
		if (ori != null) {
		return ExifInterface.getRotationForOrientationValue(ori.shortValue());
		}
		} catch (IOException e) {
		Log.w(TAG, "Getting exif data failed", e);
		} catch (NullPointerException e) {
		// Sometimes the ExifInterface has an internal NPE if Exif data isn't valid
		return ExifOrientation.readRotation(new BufferedInputStream(is), context);
		} catch (IOException \| NullPointerException e) {
		Log.w(TAG, "Getting exif data failed", e);
		} finally {
		Utils.closeSilently(bis);
		Utils.closeSilently(is);
		}
		return 0;

WallpaperPicker/src/com/android/gallery3d/common/ExifOrientation.java

0 → 100644

+145 −0

Original line number	Diff line number	Diff line
		/**
		* Copyright (C) 2015 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.gallery3d.common;

		import android.content.Context;
		import android.media.ExifInterface;
		import android.util.Log;

		import java.io.DataInputStream;
		import java.io.DataOutputStream;
		import java.io.File;
		import java.io.FileOutputStream;
		import java.io.IOException;
		import java.io.InputStream;

		public class ExifOrientation {
		private static final String TAG = "ExifOrientation";
		private static final boolean DEBUG = false;

		private static final short SOI = (short) 0xFFD8; // start of input
		private static final short APP0 = (short) 0xFFE0;
		private static final short APPF = (short) 0xFFEF;
		private static final short APP1 = (short) 0xFFE1;
		private static final short SOS = (short) 0xFFDA; // start of stream
		private static final short EOI = (short) 0xFFD9; // end of input

		// The header is available in first 64 bytes, so reading upto 128 bytes
		// should be more than enough.
		private static final int MAX_BYTES_TO_READ = 128 * 1024;

		/**
		* Parses the rotation of the JPEG image from the input stream.
		*/
		public static final int readRotation(InputStream in, Context context) {
		// Since the platform implementation only takes file input, create a temporary file
		// with just the image header.
		File tempFile = null;
		DataOutputStream tempOut = null;

		try {
		DataInputStream din = new DataInputStream(in);
		int pos = 0;
		if (din.readShort() == SOI) {
		pos += 2;

		short marker = din.readShort();
		pos += 2;

		while ((marker >= APP0 && marker <= APPF) && pos < MAX_BYTES_TO_READ) {
		int length = din.readUnsignedShort();
		if (length < 2) {
		throw new IOException("Invalid header size");
		}

		// We only want APP1 headers
		if (length > 2) {
		if (marker == APP1) {
		// Copy the header
		if (tempFile == null) {
		tempFile = File.createTempFile(TAG, ".jpg", context.getCacheDir());
		tempOut = new DataOutputStream(new FileOutputStream(tempFile));
		tempOut.writeShort(SOI);
		}

		tempOut.writeShort(marker);
		tempOut.writeShort(length);

		byte[] header = new byte[length - 2];
		din.read(header);
		tempOut.write(header);
		} else {
		din.skip(length - 2);
		}
		}
		pos += length;

		marker = din.readShort();
		pos += 2;
		}

		if (tempOut != null) {
		// Write empty image data.
		tempOut.writeShort(SOS);
		// Write the frame size as 2. Since this includes the size bytes as well
		// (short = 2 bytes), it implies there is 0 byte of image data.
		tempOut.writeShort(2);

		// End of input
		tempOut.writeShort(EOI);
		tempOut.close();

		return readRotation(tempFile.getAbsolutePath());
		}
		}
		} catch (IOException e) {
		if (DEBUG) {
		Log.d(TAG, "Error parsing input stream", e);
		}
		} finally {
		Utils.closeSilently(in);
		Utils.closeSilently(tempOut);
		if (tempFile != null) {
		tempFile.delete();
		}
		}
		return 0;
		}

		/**
		* Parses the rotation of the JPEG image.
		*/
		public static final int readRotation(String filePath) {
		try {
		ExifInterface exif = new ExifInterface(filePath);
		switch (exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 0)) {
		case ExifInterface.ORIENTATION_ROTATE_90:
		return 90;
		case ExifInterface.ORIENTATION_ROTATE_270:
		return 270;
		case ExifInterface.ORIENTATION_ROTATE_180:
		return 180;
		default:
		return 0;
		}
		} catch (IOException e) {
		if (DEBUG) {
		Log.d(TAG, "Error reading file", e);
		}
		}
		return 0;
		}
		}

WallpaperPicker/src/com/android/gallery3d/exif/ByteBufferInputStream.java

deleted100644 → 0

+0 −48

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2012 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.gallery3d.exif;

		import java.io.InputStream;
		import java.nio.ByteBuffer;

		class ByteBufferInputStream extends InputStream {

		private ByteBuffer mBuf;

		public ByteBufferInputStream(ByteBuffer buf) {
		mBuf = buf;
		}

		@Override
		public int read() {
		if (!mBuf.hasRemaining()) {
		return -1;
		}
		return mBuf.get() & 0xFF;
		}

		@Override
		public int read(byte[] bytes, int off, int len) {
		if (!mBuf.hasRemaining()) {
		return -1;
		}

		len = Math.min(len, mBuf.remaining());
		mBuf.get(bytes, off, len);
		return len;
		}
		}

WallpaperPicker/src/com/android/gallery3d/exif/CountedDataInputStream.java

deleted100644 → 0

+0 −136

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2012 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.gallery3d.exif;

		import java.io.EOFException;
		import java.io.FilterInputStream;
		import java.io.IOException;
		import java.io.InputStream;
		import java.nio.ByteBuffer;
		import java.nio.ByteOrder;
		import java.nio.charset.Charset;

		class CountedDataInputStream extends FilterInputStream {

		private int mCount = 0;

		// allocate a byte buffer for a long value;
		private final byte mByteArray[] = new byte[8];
		private final ByteBuffer mByteBuffer = ByteBuffer.wrap(mByteArray);

		protected CountedDataInputStream(InputStream in) {
		super(in);
		}

		public int getReadByteCount() {
		return mCount;
		}

		@Override
		public int read(byte[] b) throws IOException {
		int r = in.read(b);
		mCount += (r >= 0) ? r : 0;
		return r;
		}

		@Override
		public int read(byte[] b, int off, int len) throws IOException {
		int r = in.read(b, off, len);
		mCount += (r >= 0) ? r : 0;
		return r;
		}

		@Override
		public int read() throws IOException {
		int r = in.read();
		mCount += (r >= 0) ? 1 : 0;
		return r;
		}

		@Override
		public long skip(long length) throws IOException {
		long skip = in.skip(length);
		mCount += skip;
		return skip;
		}

		public void skipOrThrow(long length) throws IOException {
		if (skip(length) != length) throw new EOFException();
		}

		public void skipTo(long target) throws IOException {
		long cur = mCount;
		long diff = target - cur;
		assert(diff >= 0);
		skipOrThrow(diff);
		}

		public void readOrThrow(byte[] b, int off, int len) throws IOException {
		int r = read(b, off, len);
		if (r != len) throw new EOFException();
		}

		public void readOrThrow(byte[] b) throws IOException {
		readOrThrow(b, 0, b.length);
		}

		public void setByteOrder(ByteOrder order) {
		mByteBuffer.order(order);
		}

		public ByteOrder getByteOrder() {
		return mByteBuffer.order();
		}

		public short readShort() throws IOException {
		readOrThrow(mByteArray, 0 ,2);
		mByteBuffer.rewind();
		return mByteBuffer.getShort();
		}

		public int readUnsignedShort() throws IOException {
		return readShort() & 0xffff;
		}

		public int readInt() throws IOException {
		readOrThrow(mByteArray, 0 , 4);
		mByteBuffer.rewind();
		return mByteBuffer.getInt();
		}

		public long readUnsignedInt() throws IOException {
		return readInt() & 0xffffffffL;
		}

		public long readLong() throws IOException {
		readOrThrow(mByteArray, 0 , 8);
		mByteBuffer.rewind();
		return mByteBuffer.getLong();
		}

		public String readString(int n) throws IOException {
		byte buf[] = new byte[n];
		readOrThrow(buf);
		return new String(buf, "UTF8");
		}

		public String readString(int n, Charset charset) throws IOException {
		byte buf[] = new byte[n];
		readOrThrow(buf);
		return new String(buf, charset);
		}
		}
		No newline at end of file

WallpaperPicker/src/com/android/gallery3d/exif/ExifData.java

deleted100644 → 0

+0 −348

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2012 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.gallery3d.exif;

		import android.util.Log;

		import java.io.UnsupportedEncodingException;
		import java.nio.ByteOrder;
		import java.util.ArrayList;
		import java.util.Arrays;
		import java.util.List;

		/**
		* This class stores the EXIF header in IFDs according to the JPEG
		* specification. It is the result produced by {@link ExifReader}.
		*
		* @see ExifReader
		* @see IfdData
		*/
		class ExifData {
		private static final String TAG = "ExifData";
		private static final byte[] USER_COMMENT_ASCII = {
		0x41, 0x53, 0x43, 0x49, 0x49, 0x00, 0x00, 0x00
		};
		private static final byte[] USER_COMMENT_JIS = {
		0x4A, 0x49, 0x53, 0x00, 0x00, 0x00, 0x00, 0x00
		};
		private static final byte[] USER_COMMENT_UNICODE = {
		0x55, 0x4E, 0x49, 0x43, 0x4F, 0x44, 0x45, 0x00
		};

		private final IfdData[] mIfdDatas = new IfdData[IfdId.TYPE_IFD_COUNT];
		private byte[] mThumbnail;
		private ArrayList<byte[]> mStripBytes = new ArrayList<byte[]>();
		private final ByteOrder mByteOrder;

		ExifData(ByteOrder order) {
		mByteOrder = order;
		}

		/**
		* Gets the compressed thumbnail. Returns null if there is no compressed
		* thumbnail.
		*
		* @see #hasCompressedThumbnail()
		*/
		protected byte[] getCompressedThumbnail() {
		return mThumbnail;
		}

		/**
		* Sets the compressed thumbnail.
		*/
		protected void setCompressedThumbnail(byte[] thumbnail) {
		mThumbnail = thumbnail;
		}

		/**
		* Returns true it this header contains a compressed thumbnail.
		*/
		protected boolean hasCompressedThumbnail() {
		return mThumbnail != null;
		}

		/**
		* Adds an uncompressed strip.
		*/
		protected void setStripBytes(int index, byte[] strip) {
		if (index < mStripBytes.size()) {
		mStripBytes.set(index, strip);
		} else {
		for (int i = mStripBytes.size(); i < index; i++) {
		mStripBytes.add(null);
		}
		mStripBytes.add(strip);
		}
		}

		/**
		* Gets the strip count.
		*/
		protected int getStripCount() {
		return mStripBytes.size();
		}

		/**
		* Gets the strip at the specified index.
		*
		* @exceptions #IndexOutOfBoundException
		*/
		protected byte[] getStrip(int index) {
		return mStripBytes.get(index);
		}

		/**
		* Returns true if this header contains uncompressed strip.
		*/
		protected boolean hasUncompressedStrip() {
		return mStripBytes.size() != 0;
		}

		/**
		* Gets the byte order.
		*/
		protected ByteOrder getByteOrder() {
		return mByteOrder;
		}

		/**
		* Returns the {@link IfdData} object corresponding to a given IFD if it
		* exists or null.
		*/
		protected IfdData getIfdData(int ifdId) {
		if (ExifTag.isValidIfd(ifdId)) {
		return mIfdDatas[ifdId];
		}
		return null;
		}

		/**
		* Adds IFD data. If IFD data of the same type already exists, it will be
		* replaced by the new data.
		*/
		protected void addIfdData(IfdData data) {
		mIfdDatas[data.getId()] = data;
		}

		/**
		* Returns the {@link IfdData} object corresponding to a given IFD or
		* generates one if none exist.
		*/
		protected IfdData getOrCreateIfdData(int ifdId) {
		IfdData ifdData = mIfdDatas[ifdId];
		if (ifdData == null) {
		ifdData = new IfdData(ifdId);
		mIfdDatas[ifdId] = ifdData;
		}
		return ifdData;
		}

		/**
		* Returns the tag with a given TID in the given IFD if the tag exists.
		* Otherwise returns null.
		*/
		protected ExifTag getTag(short tag, int ifd) {
		IfdData ifdData = mIfdDatas[ifd];
		return (ifdData == null) ? null : ifdData.getTag(tag);
		}

		/**
		* Adds the given ExifTag to its default IFD and returns an existing ExifTag
		* with the same TID or null if none exist.
		*/
		protected ExifTag addTag(ExifTag tag) {
		if (tag != null) {
		int ifd = tag.getIfd();
		return addTag(tag, ifd);
		}
		return null;
		}

		/**
		* Adds the given ExifTag to the given IFD and returns an existing ExifTag
		* with the same TID or null if none exist.
		*/
		protected ExifTag addTag(ExifTag tag, int ifdId) {
		if (tag != null && ExifTag.isValidIfd(ifdId)) {
		IfdData ifdData = getOrCreateIfdData(ifdId);
		return ifdData.setTag(tag);
		}
		return null;
		}

		protected void clearThumbnailAndStrips() {
		mThumbnail = null;
		mStripBytes.clear();
		}

		/**
		* Removes the thumbnail and its related tags. IFD1 will be removed.
		*/
		protected void removeThumbnailData() {
		clearThumbnailAndStrips();
		mIfdDatas[IfdId.TYPE_IFD_1] = null;
		}

		/**
		* Removes the tag with a given TID and IFD.
		*/
		protected void removeTag(short tagId, int ifdId) {
		IfdData ifdData = mIfdDatas[ifdId];
		if (ifdData == null) {
		return;
		}
		ifdData.removeTag(tagId);
		}

		/**
		* Decodes the user comment tag into string as specified in the EXIF
		* standard. Returns null if decoding failed.
		*/
		protected String getUserComment() {
		IfdData ifdData = mIfdDatas[IfdId.TYPE_IFD_0];
		if (ifdData == null) {
		return null;
		}
		ExifTag tag = ifdData.getTag(ExifInterface.getTrueTagKey(ExifInterface.TAG_USER_COMMENT));
		if (tag == null) {
		return null;
		}
		if (tag.getComponentCount() < 8) {
		return null;
		}

		byte[] buf = new byte[tag.getComponentCount()];
		tag.getBytes(buf);

		byte[] code = new byte[8];
		System.arraycopy(buf, 0, code, 0, 8);

		try {
		if (Arrays.equals(code, USER_COMMENT_ASCII)) {
		return new String(buf, 8, buf.length - 8, "US-ASCII");
		} else if (Arrays.equals(code, USER_COMMENT_JIS)) {
		return new String(buf, 8, buf.length - 8, "EUC-JP");
		} else if (Arrays.equals(code, USER_COMMENT_UNICODE)) {
		return new String(buf, 8, buf.length - 8, "UTF-16");
		} else {
		return null;
		}
		} catch (UnsupportedEncodingException e) {
		Log.w(TAG, "Failed to decode the user comment");
		return null;
		}
		}

		/**
		* Returns a list of all {@link ExifTag}s in the ExifData or null if there
		* are none.
		*/
		protected List<ExifTag> getAllTags() {
		ArrayList<ExifTag> ret = new ArrayList<ExifTag>();
		for (IfdData d : mIfdDatas) {
		if (d != null) {
		ExifTag[] tags = d.getAllTags();
		if (tags != null) {
		for (ExifTag t : tags) {
		ret.add(t);
		}
		}
		}
		}
		if (ret.size() == 0) {
		return null;
		}
		return ret;
		}

		/**
		* Returns a list of all {@link ExifTag}s in a given IFD or null if there
		* are none.
		*/
		protected List<ExifTag> getAllTagsForIfd(int ifd) {
		IfdData d = mIfdDatas[ifd];
		if (d == null) {
		return null;
		}
		ExifTag[] tags = d.getAllTags();
		if (tags == null) {
		return null;
		}
		ArrayList<ExifTag> ret = new ArrayList<ExifTag>(tags.length);
		for (ExifTag t : tags) {
		ret.add(t);
		}
		if (ret.size() == 0) {
		return null;
		}
		return ret;
		}

		/**
		* Returns a list of all {@link ExifTag}s with a given TID or null if there
		* are none.
		*/
		protected List<ExifTag> getAllTagsForTagId(short tag) {
		ArrayList<ExifTag> ret = new ArrayList<ExifTag>();
		for (IfdData d : mIfdDatas) {
		if (d != null) {
		ExifTag t = d.getTag(tag);
		if (t != null) {
		ret.add(t);
		}
		}
		}
		if (ret.size() == 0) {
		return null;
		}
		return ret;
		}

		@Override
		public boolean equals(Object obj) {
		if (this == obj) {
		return true;
		}
		if (obj == null) {
		return false;
		}
		if (obj instanceof ExifData) {
		ExifData data = (ExifData) obj;
		if (data.mByteOrder != mByteOrder \|\|
		data.mStripBytes.size() != mStripBytes.size() \|\|
		!Arrays.equals(data.mThumbnail, mThumbnail)) {
		return false;
		}
		for (int i = 0; i < mStripBytes.size(); i++) {
		if (!Arrays.equals(data.mStripBytes.get(i), mStripBytes.get(i))) {
		return false;
		}
		}
		for (int i = 0; i < IfdId.TYPE_IFD_COUNT; i++) {
		IfdData ifd1 = data.getIfdData(i);
		IfdData ifd2 = getIfdData(i);
		if (ifd1 != ifd2 && ifd1 != null && !ifd1.equals(ifd2)) {
		return false;
		}
		}
		return true;
		}
		return false;
		}

		}