private void copyImageToPrivateStorage(File file, Uri image, int sampleSize)
throws FileCopyException {
file.getParentFile().mkdirs();
InputStream is = null;
OutputStream os = null;
try {
if (!file.exists() && !file.createNewFile()) {
throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
}
is = mXmppConnectionService.getContentResolver().openInputStream(image);
if (is == null) {
throw new FileCopyException(R.string.error_not_an_image_file);
}
Bitmap originalBitmap;
BitmapFactory.Options options = new BitmapFactory.Options();
int inSampleSize = (int) Math.pow(2, sampleSize);
Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
options.inSampleSize = inSampleSize;
originalBitmap = BitmapFactory.decodeStream(is, null, options);
is.close();
if (originalBitmap == null) {
throw new FileCopyException(R.string.error_not_an_image_file);
}
Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
int rotation = getRotation(image);
scaledBitmap = rotate(scaledBitmap, rotation);
boolean targetSizeReached = false;
int quality = Config.IMAGE_QUALITY;
while (!targetSizeReached) {
os = new FileOutputStream(file);
boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
if (!success) {
throw new FileCopyException(R.string.error_compressing_image);
}
os.flush();
targetSizeReached = file.length() <= Config.IMAGE_MAX_SIZE || quality <= 50;
quality -= 5;
}
scaledBitmap.recycle();
} catch (FileNotFoundException e) {
throw new FileCopyException(R.string.error_file_not_found);
} catch (IOException e) {
e.printStackTrace();
throw new FileCopyException(R.string.error_io_exception);
} catch (SecurityException e) {
throw new FileCopyException(R.string.error_security_exception_during_image_copy);
} catch (OutOfMemoryError e) {
++sampleSize;
if (sampleSize <= 3) {
copyImageToPrivateStorage(file, image, sampleSize);
} else {
throw new FileCopyException(R.string.error_out_of_memory);
}
} finally {
close(os);
close(is);
}
}
public Bitmap cropCenterSquare(Uri image, int size) {
if (image == null) {
return null;
}
InputStream is = null;
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = calcSampleSize(image, size);
is = mXmppConnectionService.getContentResolver().openInputStream(image);
if (is == null) {
return null;
}
Bitmap input = BitmapFactory.decodeStream(is, null, options);
if (input == null) {
return null;
} else {
input = rotate(input, getRotation(image));
return cropCenterSquare(input, size);
}
} catch (SecurityException e) {
return null; // happens for example on Android 6.0 if contacts permissions get revoked
} catch (FileNotFoundException e) {
return null;
} finally {
close(is);
}
}
public boolean save(Avatar avatar) {
File file;
if (isAvatarCached(avatar)) {
file = new File(getAvatarPath(avatar.getFilename()));
} else {
String filename = getAvatarPath(avatar.getFilename());
file = new File(filename + ".tmp");
file.getParentFile().mkdirs();
OutputStream os = null;
try {
file.createNewFile();
os = new FileOutputStream(file);
MessageDigest digest = MessageDigest.getInstance("SHA-1");
digest.reset();
DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
mDigestOutputStream.write(avatar.getImageAsBytes());
mDigestOutputStream.flush();
mDigestOutputStream.close();
String sha1sum = CryptoHelper.bytesToHex(digest.digest());
if (sha1sum.equals(avatar.sha1sum)) {
file.renameTo(new File(filename));
} else {
Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
file.delete();
return false;
}
} catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
return false;
} finally {
close(os);
}
}
avatar.size = file.length();
return true;
}
private int getRotation(Uri image) {
InputStream is = null;
try {
is = mXmppConnectionService.getContentResolver().openInputStream(image);
return ExifHelper.getOrientation(is);
} catch (FileNotFoundException e) {
return 0;
} finally {
close(is);
}
}
public void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
Log.d(
Config.LOGTAG,
"copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
file.getParentFile().mkdirs();
OutputStream os = null;
InputStream is = null;
try {
file.createNewFile();
os = new FileOutputStream(file);
is = mXmppConnectionService.getContentResolver().openInputStream(uri);
byte[] buffer = new byte[1024];
int length;
while ((length = is.read(buffer)) > 0) {
try {
os.write(buffer, 0, length);
} catch (IOException e) {
throw new FileWriterException();
}
}
try {
os.flush();
} catch (IOException e) {
throw new FileWriterException();
}
} catch (FileNotFoundException e) {
throw new FileCopyException(R.string.error_file_not_found);
} catch (FileWriterException e) {
throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
} catch (IOException e) {
e.printStackTrace();
throw new FileCopyException(R.string.error_io_exception);
} finally {
close(os);
close(is);
}
}
public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
if (image == null) {
return null;
}
InputStream is = null;
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
is = mXmppConnectionService.getContentResolver().openInputStream(image);
if (is == null) {
return null;
}
Bitmap source = BitmapFactory.decodeStream(is, null, options);
if (source == null) {
return null;
}
int sourceWidth = source.getWidth();
int sourceHeight = source.getHeight();
float xScale = (float) newWidth / sourceWidth;
float yScale = (float) newHeight / sourceHeight;
float scale = Math.max(xScale, yScale);
float scaledWidth = scale * sourceWidth;
float scaledHeight = scale * sourceHeight;
float left = (newWidth - scaledWidth) / 2;
float top = (newHeight - scaledHeight) / 2;
RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(dest);
canvas.drawBitmap(source, null, targetRect, null);
if (source != null && !source.isRecycled()) {
source.recycle();
}
return dest;
} catch (SecurityException e) {
return null; // android 6.0 with revoked permissions for example
} catch (FileNotFoundException e) {
return null;
} finally {
close(is);
}
}
public Avatar getStoredPepAvatar(String hash) {
if (hash == null) {
return null;
}
Avatar avatar = new Avatar();
File file = new File(getAvatarPath(hash));
FileInputStream is = null;
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(file.getAbsolutePath(), options);
is = new FileInputStream(file);
ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
Base64OutputStream mBase64OutputStream =
new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
MessageDigest digest = MessageDigest.getInstance("SHA-1");
DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
byte[] buffer = new byte[4096];
int length;
while ((length = is.read(buffer)) > 0) {
os.write(buffer, 0, length);
}
os.flush();
os.close();
avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
avatar.image = new String(mByteArrayOutputStream.toByteArray());
avatar.height = options.outHeight;
avatar.width = options.outWidth;
return avatar;
} catch (IOException e) {
return null;
} catch (NoSuchAlgorithmException e) {
return null;
} finally {
close(is);
}
}