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// Copyright 2018 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_FXCODEC_BMP_CFX_BMPDECOMPRESSOR_H_
#define CORE_FXCODEC_BMP_CFX_BMPDECOMPRESSOR_H_
#include "core/fxcodec/bmp/fx_bmp.h"
#include <setjmp.h>
#include <memory>
#include <vector>
#include "core/fxcodec/codec/cfx_codec_memory.h"
#include "third_party/base/span.h"
class CFX_BmpContext;
class CFX_BmpDecompressor {
public:
CFX_BmpDecompressor();
~CFX_BmpDecompressor();
void Error();
int32_t DecodeImage();
int32_t ReadHeader();
void SetInputBuffer(pdfium::span<uint8_t> src_buf);
FX_FILESIZE GetAvailInput(uint8_t** avail_buf);
jmp_buf jmpbuf_;
CFX_BmpContext* context_ptr_;
std::vector<uint8_t> out_row_buffer_;
std::vector<uint32_t> palette_;
uint32_t header_offset_;
uint32_t width_;
uint32_t height_;
uint32_t compress_flag_;
int32_t components_;
size_t src_row_bytes_;
size_t out_row_bytes_;
uint16_t bit_counts_;
uint32_t color_used_;
bool imgTB_flag_;
int32_t pal_num_;
int32_t pal_type_;
uint32_t data_size_;
uint32_t img_data_offset_;
uint32_t img_ifh_size_;
size_t row_num_;
size_t col_num_;
int32_t dpi_x_;
int32_t dpi_y_;
uint32_t mask_red_;
uint32_t mask_green_;
uint32_t mask_blue_;
int32_t decode_status_;
private:
bool GetDataPosition(uint32_t cur_pos);
void ReadScanline(uint32_t row_num, const std::vector<uint8_t>& row_buf);
int32_t DecodeRGB();
int32_t DecodeRLE8();
int32_t DecodeRLE4();
bool ReadData(uint8_t* destination, uint32_t size);
void SaveDecodingStatus(int32_t status);
bool ValidateColorIndex(uint8_t val);
bool ValidateFlag() const;
void SetHeight(int32_t signed_height);
RetainPtr<CFX_CodecMemory> input_buffer_;
};
#endif // CORE_FXCODEC_BMP_CFX_BMPDECOMPRESSOR_H_
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