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| 1 // Copyright 2016 PDFium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | |
| 6 | |
| 7 #include "core/fpdfapi/fpdf_parser/cpdf_stream_acc.h" | |
| 8 | |
| 9 #include "core/fpdfapi/fpdf_parser/fpdf_parser_decode.h" | |
| 10 | |
| 11 CPDF_StreamAcc::CPDF_StreamAcc() | |
| 12 : m_pData(nullptr), | |
| 13 m_dwSize(0), | |
| 14 m_bNewBuf(FALSE), | |
| 15 m_pImageParam(nullptr), | |
| 16 m_pStream(nullptr), | |
| 17 m_pSrcData(nullptr) {} | |
| 18 | |
| 19 void CPDF_StreamAcc::LoadAllData(const CPDF_Stream* pStream, | |
| 20 FX_BOOL bRawAccess, | |
| 21 uint32_t estimated_size, | |
| 22 FX_BOOL bImageAcc) { | |
| 23 if (!pStream) | |
| 24 return; | |
| 25 | |
| 26 m_pStream = pStream; | |
| 27 if (pStream->IsMemoryBased() && | |
| 28 (!pStream->GetDict()->KeyExist("Filter") || bRawAccess)) { | |
| 29 m_dwSize = pStream->GetRawSize(); | |
| 30 m_pData = pStream->GetRawData(); | |
| 31 return; | |
| 32 } | |
| 33 uint8_t* pSrcData; | |
| 34 uint32_t dwSrcSize = pStream->GetRawSize(); | |
| 35 if (dwSrcSize == 0) | |
| 36 return; | |
| 37 | |
| 38 if (!pStream->IsMemoryBased()) { | |
| 39 pSrcData = m_pSrcData = FX_Alloc(uint8_t, dwSrcSize); | |
| 40 if (!pStream->ReadRawData(0, pSrcData, dwSrcSize)) | |
| 41 return; | |
| 42 } else { | |
| 43 pSrcData = pStream->GetRawData(); | |
| 44 } | |
| 45 if (!pStream->GetDict()->KeyExist("Filter") || bRawAccess) { | |
| 46 m_pData = pSrcData; | |
| 47 m_dwSize = dwSrcSize; | |
| 48 } else { | |
| 49 FX_BOOL bRet = PDF_DataDecode(pSrcData, dwSrcSize, m_pStream->GetDict(), | |
| 50 m_pData, m_dwSize, m_ImageDecoder, | |
| 51 m_pImageParam, estimated_size, bImageAcc); | |
| 52 if (!bRet) { | |
| 53 m_pData = pSrcData; | |
| 54 m_dwSize = dwSrcSize; | |
| 55 } | |
| 56 } | |
| 57 if (pSrcData != pStream->GetRawData() && pSrcData != m_pData) | |
| 58 FX_Free(pSrcData); | |
| 59 m_pSrcData = nullptr; | |
| 60 m_bNewBuf = m_pData != pStream->GetRawData(); | |
| 61 } | |
| 62 | |
| 63 CPDF_StreamAcc::~CPDF_StreamAcc() { | |
| 64 if (m_bNewBuf) | |
| 65 FX_Free(m_pData); | |
| 66 FX_Free(m_pSrcData); | |
| 67 } | |
| 68 | |
| 69 const uint8_t* CPDF_StreamAcc::GetData() const { | |
| 70 if (m_bNewBuf) | |
| 71 return m_pData; | |
| 72 return m_pStream ? m_pStream->GetRawData() : nullptr; | |
| 73 } | |
| 74 | |
| 75 uint32_t CPDF_StreamAcc::GetSize() const { | |
| 76 if (m_bNewBuf) | |
| 77 return m_dwSize; | |
| 78 return m_pStream ? m_pStream->GetRawSize() : 0; | |
| 79 } | |
| 80 | |
| 81 uint8_t* CPDF_StreamAcc::DetachData() { | |
| 82 if (m_bNewBuf) { | |
| 83 uint8_t* p = m_pData; | |
| 84 m_pData = nullptr; | |
| 85 m_dwSize = 0; | |
| 86 return p; | |
| 87 } | |
| 88 uint8_t* p = FX_Alloc(uint8_t, m_dwSize); | |
| 89 FXSYS_memcpy(p, m_pData, m_dwSize); | |
| 90 return p; | |
| 91 } | |
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Chromium Code Reviews
Issue 2392603004:
Move core/fpdfapi/fpdf_parser to core/fpdfapi/parser (Closed)
