| // Copyright 2015 The PDFium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #ifndef CORE_FXCODEC_JBIG2_JBIG2_SDDPROC_H_ |
| #define CORE_FXCODEC_JBIG2_JBIG2_SDDPROC_H_ |
| |
| #include <stdint.h> |
| |
| #include <memory> |
| #include <vector> |
| |
| #include "core/fxcodec/jbig2/JBig2_ArithDecoder.h" |
| #include "core/fxcrt/unowned_ptr.h" |
| #include "third_party/base/span.h" |
| |
| class CJBig2_BitStream; |
| class CJBig2_HuffmanTable; |
| class CJBig2_Image; |
| class CJBig2_SymbolDict; |
| |
| class CJBig2_SDDProc { |
| public: |
| CJBig2_SDDProc(); |
| ~CJBig2_SDDProc(); |
| |
| std::unique_ptr<CJBig2_SymbolDict> DecodeArith( |
| CJBig2_ArithDecoder* pArithDecoder, |
| std::vector<JBig2ArithCtx>* gbContext, |
| std::vector<JBig2ArithCtx>* grContext); |
| |
| std::unique_ptr<CJBig2_SymbolDict> DecodeHuffman( |
| CJBig2_BitStream* pStream, |
| std::vector<JBig2ArithCtx>* gbContext, |
| std::vector<JBig2ArithCtx>* grContext); |
| |
| bool SDHUFF; |
| bool SDREFAGG; |
| bool SDRTEMPLATE; |
| uint8_t SDTEMPLATE; |
| uint32_t SDNUMINSYMS; |
| uint32_t SDNUMNEWSYMS; |
| uint32_t SDNUMEXSYMS; |
| CJBig2_Image** SDINSYMS; |
| UnownedPtr<const CJBig2_HuffmanTable> SDHUFFDH; |
| UnownedPtr<const CJBig2_HuffmanTable> SDHUFFDW; |
| UnownedPtr<const CJBig2_HuffmanTable> SDHUFFBMSIZE; |
| UnownedPtr<const CJBig2_HuffmanTable> SDHUFFAGGINST; |
| int8_t SDAT[8]; |
| int8_t SDRAT[4]; |
| |
| private: |
| // Reads from `SDINSYMS` if `i` is in-bounds. Otherwise, reduce `i` by |
| // `SDNUMINSYMS` and read from `new_syms` at the new index. |
| CJBig2_Image* GetImage( |
| uint32_t i, |
| pdfium::span<const std::unique_ptr<CJBig2_Image>> new_syms) const; |
| }; |
| |
| #endif // CORE_FXCODEC_JBIG2_JBIG2_SDDPROC_H_ |