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1 // Copyright 2016 PDFium Authors. All rights reserved. | 1 // Copyright 2016 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/fpdfapi/fpdf_parser/include/cpdf_stream_acc.h" | 7 #include "core/fpdfapi/fpdf_parser/include/cpdf_stream_acc.h" |
8 | 8 |
9 #include "core/fpdfapi/fpdf_parser/include/fpdf_parser_decode.h" | 9 #include "core/fpdfapi/fpdf_parser/include/fpdf_parser_decode.h" |
10 | 10 |
11 CPDF_StreamAcc::CPDF_StreamAcc() | 11 CPDF_StreamAcc::CPDF_StreamAcc() |
12 : m_pData(nullptr), | 12 : m_pData(nullptr), |
13 m_dwSize(0), | 13 m_dwSize(0), |
14 m_bNewBuf(FALSE), | 14 m_bNewBuf(FALSE), |
15 m_pImageParam(nullptr), | 15 m_pImageParam(nullptr), |
16 m_pStream(nullptr), | 16 m_pStream(nullptr), |
17 m_pSrcData(nullptr) {} | 17 m_pSrcData(nullptr) {} |
18 | 18 |
19 void CPDF_StreamAcc::LoadAllData(const CPDF_Stream* pStream, | 19 void CPDF_StreamAcc::LoadAllData(const CPDF_Stream* pStream, |
20 FX_BOOL bRawAccess, | 20 FX_BOOL bRawAccess, |
21 FX_DWORD estimated_size, | 21 uint32_t estimated_size, |
22 FX_BOOL bImageAcc) { | 22 FX_BOOL bImageAcc) { |
23 if (!pStream) | 23 if (!pStream) |
24 return; | 24 return; |
25 | 25 |
26 m_pStream = pStream; | 26 m_pStream = pStream; |
27 if (pStream->IsMemoryBased() && | 27 if (pStream->IsMemoryBased() && |
28 (!pStream->GetDict()->KeyExist("Filter") || bRawAccess)) { | 28 (!pStream->GetDict()->KeyExist("Filter") || bRawAccess)) { |
29 m_dwSize = pStream->GetRawSize(); | 29 m_dwSize = pStream->GetRawSize(); |
30 m_pData = pStream->GetRawData(); | 30 m_pData = pStream->GetRawData(); |
31 return; | 31 return; |
32 } | 32 } |
33 uint8_t* pSrcData; | 33 uint8_t* pSrcData; |
34 FX_DWORD dwSrcSize = pStream->GetRawSize(); | 34 uint32_t dwSrcSize = pStream->GetRawSize(); |
35 if (dwSrcSize == 0) | 35 if (dwSrcSize == 0) |
36 return; | 36 return; |
37 | 37 |
38 if (!pStream->IsMemoryBased()) { | 38 if (!pStream->IsMemoryBased()) { |
39 pSrcData = m_pSrcData = FX_Alloc(uint8_t, dwSrcSize); | 39 pSrcData = m_pSrcData = FX_Alloc(uint8_t, dwSrcSize); |
40 if (!pStream->ReadRawData(0, pSrcData, dwSrcSize)) | 40 if (!pStream->ReadRawData(0, pSrcData, dwSrcSize)) |
41 return; | 41 return; |
42 } else { | 42 } else { |
43 pSrcData = pStream->GetRawData(); | 43 pSrcData = pStream->GetRawData(); |
44 } | 44 } |
45 uint8_t* pDecryptedData = pSrcData; | 45 uint8_t* pDecryptedData = pSrcData; |
46 FX_DWORD dwDecryptedSize = dwSrcSize; | 46 uint32_t dwDecryptedSize = dwSrcSize; |
47 if (!pStream->GetDict()->KeyExist("Filter") || bRawAccess) { | 47 if (!pStream->GetDict()->KeyExist("Filter") || bRawAccess) { |
48 m_pData = pDecryptedData; | 48 m_pData = pDecryptedData; |
49 m_dwSize = dwDecryptedSize; | 49 m_dwSize = dwDecryptedSize; |
50 } else { | 50 } else { |
51 FX_BOOL bRet = PDF_DataDecode( | 51 FX_BOOL bRet = PDF_DataDecode( |
52 pDecryptedData, dwDecryptedSize, m_pStream->GetDict(), m_pData, | 52 pDecryptedData, dwDecryptedSize, m_pStream->GetDict(), m_pData, |
53 m_dwSize, m_ImageDecoder, m_pImageParam, estimated_size, bImageAcc); | 53 m_dwSize, m_ImageDecoder, m_pImageParam, estimated_size, bImageAcc); |
54 if (!bRet) { | 54 if (!bRet) { |
55 m_pData = pDecryptedData; | 55 m_pData = pDecryptedData; |
56 m_dwSize = dwDecryptedSize; | 56 m_dwSize = dwDecryptedSize; |
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76 const uint8_t* CPDF_StreamAcc::GetData() const { | 76 const uint8_t* CPDF_StreamAcc::GetData() const { |
77 if (m_bNewBuf) { | 77 if (m_bNewBuf) { |
78 return m_pData; | 78 return m_pData; |
79 } | 79 } |
80 if (!m_pStream) { | 80 if (!m_pStream) { |
81 return nullptr; | 81 return nullptr; |
82 } | 82 } |
83 return m_pStream->GetRawData(); | 83 return m_pStream->GetRawData(); |
84 } | 84 } |
85 | 85 |
86 FX_DWORD CPDF_StreamAcc::GetSize() const { | 86 uint32_t CPDF_StreamAcc::GetSize() const { |
87 if (m_bNewBuf) { | 87 if (m_bNewBuf) { |
88 return m_dwSize; | 88 return m_dwSize; |
89 } | 89 } |
90 if (!m_pStream) { | 90 if (!m_pStream) { |
91 return 0; | 91 return 0; |
92 } | 92 } |
93 return m_pStream->GetRawSize(); | 93 return m_pStream->GetRawSize(); |
94 } | 94 } |
95 | 95 |
96 uint8_t* CPDF_StreamAcc::DetachData() { | 96 uint8_t* CPDF_StreamAcc::DetachData() { |
97 if (m_bNewBuf) { | 97 if (m_bNewBuf) { |
98 uint8_t* p = m_pData; | 98 uint8_t* p = m_pData; |
99 m_pData = nullptr; | 99 m_pData = nullptr; |
100 m_dwSize = 0; | 100 m_dwSize = 0; |
101 return p; | 101 return p; |
102 } | 102 } |
103 uint8_t* p = FX_Alloc(uint8_t, m_dwSize); | 103 uint8_t* p = FX_Alloc(uint8_t, m_dwSize); |
104 FXSYS_memcpy(p, m_pData, m_dwSize); | 104 FXSYS_memcpy(p, m_pData, m_dwSize); |
105 return p; | 105 return p; |
106 } | 106 } |
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