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use androidx ExifInterface to parse rotation. fixes #4154

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This commit is contained in:
Daniel Gultsch 2021-09-05 16:29:02 +02:00
parent 80d8b6dd88
commit ea0dc558cb
4 changed files with 35 additions and 178 deletions
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8
build.gradle
View file

@ -8,7 +8,7 @@ buildscript {
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:7.0.1'
classpath 'com.android.tools.build:gradle:7.0.2'
}
}
@ -42,12 +42,12 @@ dependencies {
}
conversationsPlaystoreCompatImplementation("com.android.installreferrer:installreferrer:2.2")
conversationsPlaystoreSystemImplementation("com.android.installreferrer:installreferrer:2.2")
quicksyPlaystoreCompatImplementation 'com.google.android.gms:play-services-auth-api-phone:17.5.0'
quicksyPlaystoreSystemImplementation 'com.google.android.gms:play-services-auth-api-phone:17.5.0'
quicksyPlaystoreCompatImplementation 'com.google.android.gms:play-services-auth-api-phone:17.5.1'
quicksyPlaystoreSystemImplementation 'com.google.android.gms:play-services-auth-api-phone:17.5.1'
implementation 'org.sufficientlysecure:openpgp-api:10.0'
implementation 'com.theartofdev.edmodo:android-image-cropper:2.8.0'
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.exifinterface:exifinterface:1.3.2'
implementation 'androidx.exifinterface:exifinterface:1.3.3'
implementation 'androidx.cardview:cardview:1.0.0'
implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
implementation 'androidx.emoji:emoji:1.1.0'

4
src/main/java/eu/siacs/conversations/entities/Account.java
View file

@ -5,6 +5,8 @@ import android.database.Cursor;
import android.os.SystemClock;
import android.util.Log;
import com.google.common.base.Strings;
import org.json.JSONException;
import org.json.JSONObject;
@ -247,7 +249,7 @@ public class Account extends AbstractEntity implements AvatarService.Avatarable
}
public String getHostname() {
return this.hostname == null ? "" : this.hostname;
return Strings.nullToEmpty(this.hostname);
}
public void setHostname(String hostname) {

40
src/main/java/eu/siacs/conversations/persistance/FileBackend.java
View file

@ -31,6 +31,7 @@ import android.util.LruCache;
import androidx.annotation.RequiresApi;
import androidx.annotation.StringRes;
import androidx.core.content.FileProvider;
import androidx.exifinterface.media.ExifInterface;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
@ -64,7 +65,6 @@ import eu.siacs.conversations.ui.RecordingActivity;
import eu.siacs.conversations.ui.util.Attachment;
import eu.siacs.conversations.utils.Compatibility;
import eu.siacs.conversations.utils.CryptoHelper;
import eu.siacs.conversations.utils.ExifHelper;
import eu.siacs.conversations.utils.FileUtils;
import eu.siacs.conversations.utils.FileWriterException;
import eu.siacs.conversations.utils.MimeUtils;
@ -808,19 +808,34 @@ public class FileBackend {
}
}
private int getRotation(File file) {
return getRotation(Uri.parse("file://" + file.getAbsolutePath()));
private int getRotation(final File file) {
try (final InputStream inputStream = new FileInputStream(file)) {
return getRotation(inputStream);
} catch (Exception e) {
return 0;
}
}
private int getRotation(Uri image) {
InputStream is = null;
try {
is = mXmppConnectionService.getContentResolver().openInputStream(image);
return ExifHelper.getOrientation(is);
} catch (FileNotFoundException e) {
private int getRotation(final Uri image) {
try (final InputStream is = mXmppConnectionService.getContentResolver().openInputStream(image)) {
return is == null ? 0 : getRotation(is);
} catch (final Exception e) {
return 0;
} finally {
close(is);
}
}
private static int getRotation(final InputStream inputStream) throws IOException {
final ExifInterface exif = new ExifInterface(inputStream);
final int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_180:
return 180;
case ExifInterface.ORIENTATION_ROTATE_90:
return 90;
case ExifInterface.ORIENTATION_ROTATE_270:
return 270;
default:
return 0;
}
}
@ -1468,7 +1483,8 @@ public class FileBackend {
this.resId = resId;
}
public @StringRes int getResId() {
public @StringRes
int getResId() {
return resId;
}
}

161
src/main/java/eu/siacs/conversations/utils/ExifHelper.java
View file

@ -1,161 +0,0 @@
/*
* Copyright (C) 2011 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 eu.siacs.conversations.utils;
import android.util.Log;
import java.io.IOException;
import java.io.InputStream;
public class ExifHelper {
private static final String TAG = "CameraExif";
public static int getOrientation(InputStream is) {
if (is == null) {
return 0;
}
byte[] buf = new byte[8];
int length = 0;
// ISO/IEC 10918-1:1993(E)
while (read(is, buf, 2) && (buf[0] & 0xFF) == 0xFF) {
int marker = buf[1] & 0xFF;
// Check if the marker is a padding.
if (marker == 0xFF) {
continue;
}
// Check if the marker is SOI or TEM.
if (marker == 0xD8 || marker == 0x01) {
continue;
}
// Check if the marker is EOI or SOS.
if (marker == 0xD9 || marker == 0xDA) {
return 0;
}
// Get the length and check if it is reasonable.
if (!read(is, buf, 2)) {
return 0;
}
length = pack(buf, 0, 2, false);
if (length < 2) {
Log.e(TAG, "Invalid length");
return 0;
}
length -= 2;
// Break if the marker is EXIF in APP1.
if (marker == 0xE1 && length >= 6) {
if (!read(is, buf, 6)) return 0;
length -= 6;
if (pack(buf, 0, 4, false) == 0x45786966 &&
pack(buf, 4, 2, false) == 0) {
break;
}
}
// Skip other markers.
try {
is.skip(length);
} catch (IOException ex) {
return 0;
}
length = 0;
}
// JEITA CP-3451 Exif Version 2.2
if (length > 8) {
int offset = 0;
byte[] jpeg = new byte[length];
if (!read(is, jpeg, length)) {
return 0;
}
// Identify the byte order.
int tag = pack(jpeg, offset, 4, false);
if (tag != 0x49492A00 && tag != 0x4D4D002A) {
Log.e(TAG, "Invalid byte order");
return 0;
}
boolean littleEndian = (tag == 0x49492A00);
// Get the offset and check if it is reasonable.
int count = pack(jpeg, offset + 4, 4, littleEndian) + 2;
if (count < 10 || count > length) {
Log.e(TAG, "Invalid offset");
return 0;
}
offset += count;
length -= count;
// Get the count and go through all the elements.
count = pack(jpeg, offset - 2, 2, littleEndian);
while (count-- > 0 && length >= 12) {
// Get the tag and check if it is orientation.
tag = pack(jpeg, offset, 2, littleEndian);
if (tag == 0x0112) {
// We do not really care about type and count, do we?
int orientation = pack(jpeg, offset + 8, 2, littleEndian);
switch (orientation) {
case 1:
return 0;
case 3:
return 180;
case 6:
return 90;
case 8:
return 270;
}
Log.i(TAG, "Unsupported orientation");
return 0;
}
offset += 12;
length -= 12;
}
}
Log.i(TAG, "Orientation not found");
return 0;
}
private static int pack(byte[] bytes, int offset, int length,
boolean littleEndian) {
int step = 1;
if (littleEndian) {
offset += length - 1;
step = -1;
}
int value = 0;
while (length-- > 0) {
value = (value << 8) | (bytes[offset] & 0xFF);
offset += step;
}
return value;
}
private static boolean read(InputStream is, byte[] buf, int length) {
try {
return is.read(buf, 0, length) == length;
} catch (IOException ex) {
return false;
}
}
}