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// Copyright 2016 PDFium Authors. All rights reserved.
// 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_FPDFAPI_PARSER_FPDF_PARSER_DECODE_H_
#define CORE_FPDFAPI_PARSER_FPDF_PARSER_DECODE_H_
#include <memory>
#include "core/fxcrt/fx_memory.h"
#include "core/fxcrt/fx_string.h"
#include "core/fxcrt/unowned_ptr.h"
#include "third_party/base/span.h"
class CCodec_ScanlineDecoder;
class CPDF_Dictionary;
// Indexed by 8-bit char code, contains unicode code points.
extern const uint16_t PDFDocEncoding[256];
ByteString PDF_EncodeString(const ByteString& src, bool bHex);
WideString PDF_DecodeText(const uint8_t* pData, uint32_t size);
WideString PDF_DecodeText(const ByteString& bstr);
ByteString PDF_EncodeText(const WideString& str);
std::unique_ptr<CCodec_ScanlineDecoder> CreateFaxDecoder(
pdfium::span<const uint8_t> src_span,
int width,
int height,
const CPDF_Dictionary* pParams);
std::unique_ptr<CCodec_ScanlineDecoder> CreateFlateDecoder(
pdfium::span<const uint8_t> src_span,
int width,
int height,
int nComps,
int bpc,
const CPDF_Dictionary* pParams);
bool FlateEncode(pdfium::span<const uint8_t> src_span,
uint8_t** dest_buf,
uint32_t* dest_size);
uint32_t FlateDecode(pdfium::span<const uint8_t> src_span,
uint8_t** dest_buf,
uint32_t* dest_size);
uint32_t RunLengthDecode(pdfium::span<const uint8_t> src_span,
uint8_t** dest_buf,
uint32_t* dest_size);
uint32_t A85Decode(pdfium::span<const uint8_t> src_span,
std::unique_ptr<uint8_t, FxFreeDeleter>* dest_buf,
uint32_t* dest_size);
uint32_t HexDecode(pdfium::span<const uint8_t> src_span,
std::unique_ptr<uint8_t, FxFreeDeleter>* dest_buf,
uint32_t* dest_size);
uint32_t FlateOrLZWDecode(bool bLZW,
pdfium::span<const uint8_t> src_span,
const CPDF_Dictionary* pParams,
uint32_t estimated_size,
uint8_t** dest_buf,
uint32_t* dest_size);
bool PDF_DataDecode(pdfium::span<const uint8_t> src_span,
const CPDF_Dictionary* pDict,
uint32_t estimated_size,
bool bImageAcc,
uint8_t** dest_buf,
uint32_t* dest_size,
ByteString* ImageEncoding,
UnownedPtr<const CPDF_Dictionary>* pImageParms);
#endif // CORE_FPDFAPI_PARSER_FPDF_PARSER_DECODE_H_
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