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authorDan Sinclair <dsinclair@chromium.org>2016-03-14 14:14:16 -0400
committerDan Sinclair <dsinclair@chromium.org>2016-03-14 14:14:16 -0400
commit1770c021cf998ff1b33855b1397f6ea8ff9f7cd7 (patch)
tree285e39abd4b5872d8cd632b9e331b0667fdc3eae /xfa/fxbarcode/common/BC_CommonBitSource.cpp
parentf766ad219f66543654520f6a1955836f519e26d1 (diff)
downloadpdfium-1770c021cf998ff1b33855b1397f6ea8ff9f7cd7.tar.xz
Move xfa/src up to xfa/.
This CL moves the xfa/src files up to the xfa/ directory and fixes the includes, include guards, and build files. R=tsepez@chromium.org Review URL: https://codereview.chromium.org/1803723002 .
Diffstat (limited to 'xfa/fxbarcode/common/BC_CommonBitSource.cpp')
-rw-r--r--xfa/fxbarcode/common/BC_CommonBitSource.cpp71
1 files changed, 71 insertions, 0 deletions
diff --git a/xfa/fxbarcode/common/BC_CommonBitSource.cpp b/xfa/fxbarcode/common/BC_CommonBitSource.cpp
new file mode 100644
index 0000000000..af91d5e0bd
--- /dev/null
+++ b/xfa/fxbarcode/common/BC_CommonBitSource.cpp
@@ -0,0 +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/fxbarcode/common/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;
+}