1 // Copyright 2016 The PDFium Authors 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 #ifndef CORE_FXCODEC_FLATE_FLATEMODULE_H_ 8 #define CORE_FXCODEC_FLATE_FLATEMODULE_H_ 9 10 #include <stdint.h> 11 12 #include <memory> 13 14 #include "core/fxcodec/data_and_bytes_consumed.h" 15 #include "core/fxcrt/data_vector.h" 16 #include "core/fxcrt/span.h" 17 18 namespace fxcodec { 19 20 class ScanlineDecoder; 21 22 class FlateModule { 23 public: 24 static std::unique_ptr<ScanlineDecoder> CreateDecoder( 25 pdfium::span<const uint8_t> src_span, 26 int width, 27 int height, 28 int nComps, 29 int bpc, 30 int predictor, 31 int Colors, 32 int BitsPerComponent, 33 int Columns); 34 35 static DataAndBytesConsumed FlateOrLZWDecode( 36 bool bLZW, 37 pdfium::span<const uint8_t> src_span, 38 bool bEarlyChange, 39 int predictor, 40 int Colors, 41 int BitsPerComponent, 42 int Columns, 43 uint32_t estimated_size); 44 45 static DataVector<uint8_t> Encode(pdfium::span<const uint8_t> src_span); 46 47 FlateModule() = delete; 48 FlateModule(const FlateModule&) = delete; 49 FlateModule& operator=(const FlateModule&) = delete; 50 }; 51 52 } // namespace fxcodec 53 54 using FlateModule = fxcodec::FlateModule; 55 56 #endif // CORE_FXCODEC_FLATE_FLATEMODULE_H_ 57