summaryrefslogtreecommitdiff
path: root/xfa/src/fxbarcode/common/BC_CommonBitSource.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'xfa/src/fxbarcode/common/BC_CommonBitSource.cpp')
-rw-r--r--xfa/src/fxbarcode/common/BC_CommonBitSource.cpp142
1 files changed, 71 insertions, 71 deletions
diff --git a/xfa/src/fxbarcode/common/BC_CommonBitSource.cpp b/xfa/src/fxbarcode/common/BC_CommonBitSource.cpp
index c308638fad..7bf4bf61fd 100644
--- a/xfa/src/fxbarcode/common/BC_CommonBitSource.cpp
+++ b/xfa/src/fxbarcode/common/BC_CommonBitSource.cpp
@@ -1,71 +1,71 @@
-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-// Original code is licensed as follows:
-/*
- * Copyright 2007 ZXing authors
- *
- * 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.
- */
-
-#include "xfa/src/fxbarcode/barcode.h"
-#include "BC_CommonBitSource.h"
-CBC_CommonBitSource::CBC_CommonBitSource(CFX_ByteArray* bytes) {
- m_bytes.Copy((*bytes));
- m_bitOffset = 0;
- m_byteOffset = 0;
-}
-CBC_CommonBitSource::~CBC_CommonBitSource() {}
-int32_t CBC_CommonBitSource::ReadBits(int32_t numBits, int32_t& e) {
- if (numBits < 1 || numBits > 32) {
- e = BCExceptionIllegalArgument;
- return 0;
- }
- int32_t result = 0;
- if (m_bitOffset > 0) {
- int32_t bitsLeft = 8 - m_bitOffset;
- int32_t toRead = numBits < bitsLeft ? numBits : bitsLeft;
- int32_t bitsToNotRead = bitsLeft - toRead;
- int32_t mask = (0xff >> (8 - toRead)) << bitsToNotRead;
- result = (m_bytes[m_byteOffset] & mask) >> bitsToNotRead;
- numBits -= toRead;
- m_bitOffset += toRead;
- if (m_bitOffset == 8) {
- m_bitOffset = 0;
- m_byteOffset++;
- }
- }
- if (numBits > 0) {
- while (numBits >= 8) {
- result = (result << 8) | (m_bytes[m_byteOffset] & 0xff);
- m_byteOffset++;
- numBits -= 8;
- }
- if (numBits > 0) {
- int32_t bitsToNotRead = 8 - numBits;
- int32_t mask = (0xff >> bitsToNotRead) << bitsToNotRead;
- result = (result << numBits) |
- ((m_bytes[m_byteOffset] & mask) >> bitsToNotRead);
- m_bitOffset += numBits;
- }
- }
- return result;
-}
-int32_t CBC_CommonBitSource::Available() {
- return 8 * (m_bytes.GetSize() - m_byteOffset) - m_bitOffset;
-}
-int32_t CBC_CommonBitSource::getByteOffset() {
- return m_byteOffset;
-}
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+// Original code is licensed as follows:
+/*
+ * Copyright 2007 ZXing authors
+ *
+ * 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.
+ */
+
+#include "xfa/src/fxbarcode/barcode.h"
+#include "BC_CommonBitSource.h"
+CBC_CommonBitSource::CBC_CommonBitSource(CFX_ByteArray* bytes) {
+ m_bytes.Copy((*bytes));
+ m_bitOffset = 0;
+ m_byteOffset = 0;
+}
+CBC_CommonBitSource::~CBC_CommonBitSource() {}
+int32_t CBC_CommonBitSource::ReadBits(int32_t numBits, int32_t& e) {
+ if (numBits < 1 || numBits > 32) {
+ e = BCExceptionIllegalArgument;
+ return 0;
+ }
+ int32_t result = 0;
+ if (m_bitOffset > 0) {
+ int32_t bitsLeft = 8 - m_bitOffset;
+ int32_t toRead = numBits < bitsLeft ? numBits : bitsLeft;
+ int32_t bitsToNotRead = bitsLeft - toRead;
+ int32_t mask = (0xff >> (8 - toRead)) << bitsToNotRead;
+ result = (m_bytes[m_byteOffset] & mask) >> bitsToNotRead;
+ numBits -= toRead;
+ m_bitOffset += toRead;
+ if (m_bitOffset == 8) {
+ m_bitOffset = 0;
+ m_byteOffset++;
+ }
+ }
+ if (numBits > 0) {
+ while (numBits >= 8) {
+ result = (result << 8) | (m_bytes[m_byteOffset] & 0xff);
+ m_byteOffset++;
+ numBits -= 8;
+ }
+ if (numBits > 0) {
+ int32_t bitsToNotRead = 8 - numBits;
+ int32_t mask = (0xff >> bitsToNotRead) << bitsToNotRead;
+ result = (result << numBits) |
+ ((m_bytes[m_byteOffset] & mask) >> bitsToNotRead);
+ m_bitOffset += numBits;
+ }
+ }
+ return result;
+}
+int32_t CBC_CommonBitSource::Available() {
+ return 8 * (m_bytes.GetSize() - m_byteOffset) - m_bitOffset;
+}
+int32_t CBC_CommonBitSource::getByteOffset() {
+ return m_byteOffset;
+}