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Diffstat (limited to 'gallerycommon/src/com/android/gallery3d/exif/ExifData.java')
-rw-r--r--gallerycommon/src/com/android/gallery3d/exif/ExifData.java348
1 files changed, 0 insertions, 348 deletions
diff --git a/gallerycommon/src/com/android/gallery3d/exif/ExifData.java b/gallerycommon/src/com/android/gallery3d/exif/ExifData.java
deleted file mode 100644
index 8422382bb..000000000
--- a/gallerycommon/src/com/android/gallery3d/exif/ExifData.java
+++ /dev/null
@@ -1,348 +0,0 @@
-/*
- * 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;
- }
-
-}
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