diff options
Diffstat (limited to 'src/com/android/gallery3d/exif/ExifModifier.java')
| -rw-r--r-- | src/com/android/gallery3d/exif/ExifModifier.java | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/src/com/android/gallery3d/exif/ExifModifier.java b/src/com/android/gallery3d/exif/ExifModifier.java deleted file mode 100644 index f00362b6b..000000000 --- a/src/com/android/gallery3d/exif/ExifModifier.java +++ /dev/null @@ -1,196 +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.Closeable; -import java.io.IOException; -import java.io.InputStream; -import java.nio.ByteBuffer; -import java.nio.ByteOrder; -import java.util.ArrayList; -import java.util.List; - -class ExifModifier { - public static final String TAG = "ExifModifier"; - public static final boolean DEBUG = false; - private final ByteBuffer mByteBuffer; - private final ExifData mTagToModified; - private final List<TagOffset> mTagOffsets = new ArrayList<TagOffset>(); - private final ExifInterface mInterface; - private int mOffsetBase; - - private static class TagOffset { - final int mOffset; - final ExifTag mTag; - - TagOffset(ExifTag tag, int offset) { - mTag = tag; - mOffset = offset; - } - } - - protected ExifModifier(ByteBuffer byteBuffer, ExifInterface iRef) throws IOException, - ExifInvalidFormatException { - mByteBuffer = byteBuffer; - mOffsetBase = byteBuffer.position(); - mInterface = iRef; - InputStream is = null; - try { - is = new ByteBufferInputStream(byteBuffer); - // Do not require any IFD; - ExifParser parser = ExifParser.parse(is, mInterface); - mTagToModified = new ExifData(parser.getByteOrder()); - mOffsetBase += parser.getTiffStartPosition(); - mByteBuffer.position(0); - } finally { - ExifInterface.closeSilently(is); - } - } - - protected ByteOrder getByteOrder() { - return mTagToModified.getByteOrder(); - } - - protected boolean commit() throws IOException, ExifInvalidFormatException { - InputStream is = null; - try { - is = new ByteBufferInputStream(mByteBuffer); - int flag = 0; - IfdData[] ifdDatas = new IfdData[] { - mTagToModified.getIfdData(IfdId.TYPE_IFD_0), - mTagToModified.getIfdData(IfdId.TYPE_IFD_1), - mTagToModified.getIfdData(IfdId.TYPE_IFD_EXIF), - mTagToModified.getIfdData(IfdId.TYPE_IFD_INTEROPERABILITY), - mTagToModified.getIfdData(IfdId.TYPE_IFD_GPS) - }; - - if (ifdDatas[IfdId.TYPE_IFD_0] != null) { - flag |= ExifParser.OPTION_IFD_0; - } - if (ifdDatas[IfdId.TYPE_IFD_1] != null) { - flag |= ExifParser.OPTION_IFD_1; - } - if (ifdDatas[IfdId.TYPE_IFD_EXIF] != null) { - flag |= ExifParser.OPTION_IFD_EXIF; - } - if (ifdDatas[IfdId.TYPE_IFD_GPS] != null) { - flag |= ExifParser.OPTION_IFD_GPS; - } - if (ifdDatas[IfdId.TYPE_IFD_INTEROPERABILITY] != null) { - flag |= ExifParser.OPTION_IFD_INTEROPERABILITY; - } - - ExifParser parser = ExifParser.parse(is, flag, mInterface); - int event = parser.next(); - IfdData currIfd = null; - while (event != ExifParser.EVENT_END) { - switch (event) { - case ExifParser.EVENT_START_OF_IFD: - currIfd = ifdDatas[parser.getCurrentIfd()]; - if (currIfd == null) { - parser.skipRemainingTagsInCurrentIfd(); - } - break; - case ExifParser.EVENT_NEW_TAG: - ExifTag oldTag = parser.getTag(); - ExifTag newTag = currIfd.getTag(oldTag.getTagId()); - if (newTag != null) { - if (newTag.getComponentCount() != oldTag.getComponentCount() - || newTag.getDataType() != oldTag.getDataType()) { - return false; - } else { - mTagOffsets.add(new TagOffset(newTag, oldTag.getOffset())); - currIfd.removeTag(oldTag.getTagId()); - if (currIfd.getTagCount() == 0) { - parser.skipRemainingTagsInCurrentIfd(); - } - } - } - break; - } - event = parser.next(); - } - for (IfdData ifd : ifdDatas) { - if (ifd != null && ifd.getTagCount() > 0) { - return false; - } - } - modify(); - } finally { - ExifInterface.closeSilently(is); - } - return true; - } - - private void modify() { - mByteBuffer.order(getByteOrder()); - for (TagOffset tagOffset : mTagOffsets) { - writeTagValue(tagOffset.mTag, tagOffset.mOffset); - } - } - - private void writeTagValue(ExifTag tag, int offset) { - if (DEBUG) { - Log.v(TAG, "modifying tag to: \n" + tag.toString()); - Log.v(TAG, "at offset: " + offset); - } - mByteBuffer.position(offset + mOffsetBase); - switch (tag.getDataType()) { - case ExifTag.TYPE_ASCII: - byte buf[] = tag.getStringByte(); - if (buf.length == tag.getComponentCount()) { - buf[buf.length - 1] = 0; - mByteBuffer.put(buf); - } else { - mByteBuffer.put(buf); - mByteBuffer.put((byte) 0); - } - break; - case ExifTag.TYPE_LONG: - case ExifTag.TYPE_UNSIGNED_LONG: - for (int i = 0, n = tag.getComponentCount(); i < n; i++) { - mByteBuffer.putInt((int) tag.getValueAt(i)); - } - break; - case ExifTag.TYPE_RATIONAL: - case ExifTag.TYPE_UNSIGNED_RATIONAL: - for (int i = 0, n = tag.getComponentCount(); i < n; i++) { - Rational v = tag.getRational(i); - mByteBuffer.putInt((int) v.getNumerator()); - mByteBuffer.putInt((int) v.getDenominator()); - } - break; - case ExifTag.TYPE_UNDEFINED: - case ExifTag.TYPE_UNSIGNED_BYTE: - buf = new byte[tag.getComponentCount()]; - tag.getBytes(buf); - mByteBuffer.put(buf); - break; - case ExifTag.TYPE_UNSIGNED_SHORT: - for (int i = 0, n = tag.getComponentCount(); i < n; i++) { - mByteBuffer.putShort((short) tag.getValueAt(i)); - } - break; - } - } - - public void modifyTag(ExifTag tag) { - mTagToModified.addTag(tag); - } -} |