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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/fxcodec/jbig2/JBig2_BitStream.h" | 7 #include "core/fxcodec/jbig2/JBig2_BitStream.h" |
| 8 | 8 |
| 9 #include <algorithm> | 9 #include <algorithm> |
| 10 | 10 |
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| 66 | 66 |
| 67 int32_t CJBig2_BitStream::read1Bit(uint32_t* dwResult) { | 67 int32_t CJBig2_BitStream::read1Bit(uint32_t* dwResult) { |
| 68 if (!IsInBound()) | 68 if (!IsInBound()) |
| 69 return -1; | 69 return -1; |
| 70 | 70 |
| 71 *dwResult = (m_pBuf[m_dwByteIdx] >> (7 - m_dwBitIdx)) & 0x01; | 71 *dwResult = (m_pBuf[m_dwByteIdx] >> (7 - m_dwBitIdx)) & 0x01; |
| 72 AdvanceBit(); | 72 AdvanceBit(); |
| 73 return 0; | 73 return 0; |
| 74 } | 74 } |
| 75 | 75 |
| 76 int32_t CJBig2_BitStream::read1Bit(FX_BOOL* bResult) { | 76 int32_t CJBig2_BitStream::read1Bit(bool* bResult) { |
| 77 if (!IsInBound()) | 77 if (!IsInBound()) |
| 78 return -1; | 78 return -1; |
| 79 | 79 |
| 80 *bResult = (m_pBuf[m_dwByteIdx] >> (7 - m_dwBitIdx)) & 0x01; | 80 *bResult = (m_pBuf[m_dwByteIdx] >> (7 - m_dwBitIdx)) & 0x01; |
| 81 AdvanceBit(); | 81 AdvanceBit(); |
| 82 return 0; | 82 return 0; |
| 83 } | 83 } |
| 84 | 84 |
| 85 int32_t CJBig2_BitStream::read1Byte(uint8_t* cResult) { | 85 int32_t CJBig2_BitStream::read1Byte(uint8_t* cResult) { |
| 86 if (!IsInBound()) | 86 if (!IsInBound()) |
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| 180 return m_dwByteIdx < m_dwLength; | 180 return m_dwByteIdx < m_dwLength; |
| 181 } | 181 } |
| 182 | 182 |
| 183 uint32_t CJBig2_BitStream::LengthInBits() const { | 183 uint32_t CJBig2_BitStream::LengthInBits() const { |
| 184 return m_dwLength << 3; | 184 return m_dwLength << 3; |
| 185 } | 185 } |
| 186 | 186 |
| 187 uint32_t CJBig2_BitStream::getObjNum() const { | 187 uint32_t CJBig2_BitStream::getObjNum() const { |
| 188 return m_dwObjNum; | 188 return m_dwObjNum; |
| 189 } | 189 } |
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