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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 "../../../include/fpdfapi/fpdf_parser.h" | 7 #include "../../../include/fpdfapi/fpdf_parser.h" |
8 #include "../../../include/fpdfapi/fpdf_module.h" | 8 #include "../../../include/fpdfapi/fpdf_module.h" |
9 #include "../../../include/fxcodec/fx_codec.h" | 9 #include "../../../include/fxcodec/fx_codec.h" |
10 #include <limits.h> | 10 #include <limits.h> |
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225 check *= BitsPerComponent; | 225 check *= BitsPerComponent; |
226 if (check > INT_MAX - 7) { | 226 if (check > INT_MAX - 7) { |
227 return FALSE; | 227 return FALSE; |
228 } | 228 } |
229 return TRUE; | 229 return TRUE; |
230 } | 230 } |
231 ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder(FX_LPCBYTE src_buf, FX_DWORD
src_size, int width, int height, | 231 ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder(FX_LPCBYTE src_buf, FX_DWORD
src_size, int width, int height, |
232 int nComps, int bpc, const CPDF_Dictionary* pParams) | 232 int nComps, int bpc, const CPDF_Dictionary* pParams) |
233 { | 233 { |
234 int predictor = 0; | 234 int predictor = 0; |
235 FX_BOOL bEarlyChange = TRUE; | |
236 int Colors = 0, BitsPerComponent = 0, Columns = 0; | 235 int Colors = 0, BitsPerComponent = 0, Columns = 0; |
237 if (pParams) { | 236 if (pParams) { |
238 predictor = ((CPDF_Dictionary*)pParams)->GetInteger(FX_BSTRC("Predictor"
)); | 237 predictor = ((CPDF_Dictionary*)pParams)->GetInteger(FX_BSTRC("Predictor"
)); |
239 bEarlyChange = ((CPDF_Dictionary*)pParams)->GetInteger(FX_BSTRC("EarlyCh
ange"), 1); | |
240 Colors = pParams->GetInteger(FX_BSTRC("Colors"), 1); | 238 Colors = pParams->GetInteger(FX_BSTRC("Colors"), 1); |
241 BitsPerComponent = pParams->GetInteger(FX_BSTRC("BitsPerComponent"), 8); | 239 BitsPerComponent = pParams->GetInteger(FX_BSTRC("BitsPerComponent"), 8); |
242 Columns = pParams->GetInteger(FX_BSTRC("Columns"), 1); | 240 Columns = pParams->GetInteger(FX_BSTRC("Columns"), 1); |
243 if (!CheckFlateDecodeParams(Colors, BitsPerComponent, Columns)) { | 241 if (!CheckFlateDecodeParams(Colors, BitsPerComponent, Columns)) { |
244 return NULL; | 242 return NULL; |
245 } | 243 } |
246 } | 244 } |
247 return CPDF_ModuleMgr::Get()->GetFlateModule()->CreateDecoder(src_buf, src_s
ize, width, height, | 245 return CPDF_ModuleMgr::Get()->GetFlateModule()->CreateDecoder(src_buf, src_s
ize, width, height, |
248 nComps, bpc, predictor, Colors, BitsPerComponent, Columns); | 246 nComps, bpc, predictor, Colors, BitsPerComponent, Columns); |
249 } | 247 } |
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521 } | 519 } |
522 } | 520 } |
523 FX_DWORD FlateDecode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_
buf, FX_DWORD& dest_size) | 521 FX_DWORD FlateDecode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_
buf, FX_DWORD& dest_size) |
524 { | 522 { |
525 CCodec_ModuleMgr* pEncoders = CPDF_ModuleMgr::Get()->GetCodecModule(); | 523 CCodec_ModuleMgr* pEncoders = CPDF_ModuleMgr::Get()->GetCodecModule(); |
526 if (pEncoders) { | 524 if (pEncoders) { |
527 return pEncoders->GetFlateModule()->FlateOrLZWDecode(FALSE, src_buf, src
_size, FALSE, 0, 0, 0, 0, 0, dest_buf, dest_size); | 525 return pEncoders->GetFlateModule()->FlateOrLZWDecode(FALSE, src_buf, src
_size, FALSE, 0, 0, 0, 0, 0, dest_buf, dest_size); |
528 } | 526 } |
529 return 0; | 527 return 0; |
530 } | 528 } |
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