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Side by Side Diff: core/fxcodec/jbig2/JBig2_BitStream.cpp

Issue 1800523005: Move core/src/ up to core/. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: Created 4 years, 9 months ago
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1 // Copyright 2015 PDFium Authors. All rights reserved. 1 // Copyright 2015 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 6
7 #include "core/src/fxcodec/jbig2/JBig2_BitStream.h" 7 #include "core/fxcodec/jbig2/JBig2_BitStream.h"
8 8
9 #include <algorithm> 9 #include <algorithm>
10 10
11 #include "core/include/fpdfapi/cpdf_stream.h" 11 #include "core/include/fpdfapi/cpdf_stream.h"
12 12
13 CJBig2_BitStream::CJBig2_BitStream(CPDF_StreamAcc* pSrcStream) 13 CJBig2_BitStream::CJBig2_BitStream(CPDF_StreamAcc* pSrcStream)
14 : m_pBuf(pSrcStream->GetData()), 14 : m_pBuf(pSrcStream->GetData()),
15 m_dwLength(pSrcStream->GetSize()), 15 m_dwLength(pSrcStream->GetSize()),
16 m_dwByteIdx(0), 16 m_dwByteIdx(0),
17 m_dwBitIdx(0), 17 m_dwBitIdx(0),
18 m_dwObjNum(pSrcStream->GetStream() ? pSrcStream->GetStream()->GetObjNum() 18 m_dwObjNum(pSrcStream->GetStream() ? pSrcStream->GetStream()->GetObjNum()
19 : 0) { 19 : 0) {
20 if (m_dwLength > 256 * 1024 * 1024) { 20 if (m_dwLength > 256 * 1024 * 1024) {
21 m_dwLength = 0; 21 m_dwLength = 0;
22 m_pBuf = nullptr; 22 m_pBuf = nullptr;
23 } 23 }
24 } 24 }
25 25
26 CJBig2_BitStream::~CJBig2_BitStream() { 26 CJBig2_BitStream::~CJBig2_BitStream() {}
27 }
28 27
29 int32_t CJBig2_BitStream::readNBits(FX_DWORD dwBits, FX_DWORD* dwResult) { 28 int32_t CJBig2_BitStream::readNBits(FX_DWORD dwBits, FX_DWORD* dwResult) {
30 FX_DWORD dwBitPos = getBitPos(); 29 FX_DWORD dwBitPos = getBitPos();
31 if (dwBitPos > LengthInBits()) 30 if (dwBitPos > LengthInBits())
32 return -1; 31 return -1;
33 32
34 *dwResult = 0; 33 *dwResult = 0;
35 if (dwBitPos + dwBits <= LengthInBits()) 34 if (dwBitPos + dwBits <= LengthInBits())
36 dwBitPos = dwBits; 35 dwBitPos = dwBits;
37 else 36 else
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180 return m_dwByteIdx < m_dwLength; 179 return m_dwByteIdx < m_dwLength;
181 } 180 }
182 181
183 FX_DWORD CJBig2_BitStream::LengthInBits() const { 182 FX_DWORD CJBig2_BitStream::LengthInBits() const {
184 return m_dwLength << 3; 183 return m_dwLength << 3;
185 } 184 }
186 185
187 FX_DWORD CJBig2_BitStream::getObjNum() const { 186 FX_DWORD CJBig2_BitStream::getObjNum() const {
188 return m_dwObjNum; 187 return m_dwObjNum;
189 } 188 }
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