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1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 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 "../../../../third_party/zlib_v128/zlib.h" | 7 #include "../../../../third_party/zlib_v128/zlib.h" |
8 #include "../../../include/fpdfapi/fpdf_parser.h" | 8 #include "../../../include/fpdfapi/fpdf_parser.h" |
9 #include "../../../include/fxcodec/fx_codec.h" | 9 #include "../../../include/fxcodec/fx_codec.h" |
10 #include "../../../include/fpdfapi/fpdf_module.h" | 10 #include "../../../include/fpdfapi/fpdf_module.h" |
11 #include "filters_int.h" | 11 #include "filters_int.h" |
12 | 12 |
13 CFX_DataFilter::CFX_DataFilter() | 13 CFX_DataFilter::CFX_DataFilter() |
14 { | 14 { |
15 m_bEOF = FALSE; | 15 m_bEOF = FALSE; |
16 m_pDestFilter = NULL; | 16 m_pDestFilter = NULL; |
17 m_SrcPos = 0; | 17 m_SrcPos = 0; |
18 } | 18 } |
19 CFX_DataFilter::~CFX_DataFilter() | 19 CFX_DataFilter::~CFX_DataFilter() |
20 { | 20 { |
21 if (m_pDestFilter) { | 21 delete m_pDestFilter; |
22 delete m_pDestFilter; | |
23 } | |
24 } | 22 } |
25 void CFX_DataFilter::SetDestFilter(CFX_DataFilter* pFilter) | 23 void CFX_DataFilter::SetDestFilter(CFX_DataFilter* pFilter) |
26 { | 24 { |
27 if (m_pDestFilter) { | 25 if (m_pDestFilter) { |
28 m_pDestFilter->SetDestFilter(pFilter); | 26 m_pDestFilter->SetDestFilter(pFilter); |
29 } else { | 27 } else { |
30 m_pDestFilter = pFilter; | 28 m_pDestFilter = pFilter; |
31 } | 29 } |
32 } | 30 } |
33 void CFX_DataFilter::FilterIn(const uint8_t* src_buf, FX_DWORD src_size, CFX_Bin
aryBuf& dest_buf) | 31 void CFX_DataFilter::FilterIn(const uint8_t* src_buf, FX_DWORD src_size, CFX_Bin
aryBuf& dest_buf) |
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185 } | 183 } |
186 CPDF_StreamFilter* pStreamFilter = new CPDF_StreamFilter; | 184 CPDF_StreamFilter* pStreamFilter = new CPDF_StreamFilter; |
187 pStreamFilter->m_pStream = this; | 185 pStreamFilter->m_pStream = this; |
188 pStreamFilter->m_pFilter = pFirstFilter; | 186 pStreamFilter->m_pFilter = pFirstFilter; |
189 pStreamFilter->m_pBuffer = NULL; | 187 pStreamFilter->m_pBuffer = NULL; |
190 pStreamFilter->m_SrcOffset = 0; | 188 pStreamFilter->m_SrcOffset = 0; |
191 return pStreamFilter; | 189 return pStreamFilter; |
192 } | 190 } |
193 CPDF_StreamFilter::~CPDF_StreamFilter() | 191 CPDF_StreamFilter::~CPDF_StreamFilter() |
194 { | 192 { |
195 if (m_pFilter) { | 193 delete m_pFilter; |
196 delete m_pFilter; | 194 delete m_pBuffer; |
197 } | |
198 if (m_pBuffer) { | |
199 delete m_pBuffer; | |
200 } | |
201 } | 195 } |
202 #define FPDF_FILTER_BUFFER_IN_SIZE FPDF_FILTER_BUFFER_SIZE | 196 #define FPDF_FILTER_BUFFER_IN_SIZE FPDF_FILTER_BUFFER_SIZE |
203 FX_DWORD CPDF_StreamFilter::ReadBlock(uint8_t* buffer, FX_DWORD buf_size) | 197 FX_DWORD CPDF_StreamFilter::ReadBlock(uint8_t* buffer, FX_DWORD buf_size) |
204 { | 198 { |
205 if (m_pFilter == NULL) { | 199 if (m_pFilter == NULL) { |
206 FX_DWORD read_size = m_pStream->GetRawSize() - m_SrcOffset; | 200 FX_DWORD read_size = m_pStream->GetRawSize() - m_SrcOffset; |
207 if (read_size == 0) { | 201 if (read_size == 0) { |
208 return 0; | 202 return 0; |
209 } | 203 } |
210 if (read_size > buf_size) { | 204 if (read_size > buf_size) { |
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900 } | 894 } |
901 if (m_bEndOfLine) | 895 if (m_bEndOfLine) |
902 if (!_FaxSkipEOL(src_buf, bitsize, bitpos)) { | 896 if (!_FaxSkipEOL(src_buf, bitsize, bitpos)) { |
903 return FALSE; | 897 return FALSE; |
904 } | 898 } |
905 if (m_bByteAlign) { | 899 if (m_bByteAlign) { |
906 bitpos = (bitpos + 7) / 8 * 8; | 900 bitpos = (bitpos + 7) / 8 * 8; |
907 } | 901 } |
908 return TRUE; | 902 return TRUE; |
909 } | 903 } |
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