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// Copyright 2017 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_LGIF_CGIFDECOMPRESSOR_H_
#define CORE_FXCODEC_LGIF_CGIFDECOMPRESSOR_H_
#include <setjmp.h>
#include <memory>
#include <vector>
#include "core/fxcodec/lgif/fx_gif.h"
#include "core/fxcrt/fx_basic.h"
class CCodec_GifModule;
// TODO(npm): Get rid of this, maybe rename CGifDecompressor->GifContext
class FXGIF_Context {
public:
FXGIF_Context();
~FXGIF_Context();
std::unique_ptr<CGifDecompressor> m_Gif;
CCodec_GifModule* parent_ptr;
};
class CGifDecompressor {
public:
CGifDecompressor(FXGIF_Context* p, char* error_string);
~CGifDecompressor();
void ErrorData(const char* err_msg);
void RecordCurrentPosition(uint32_t* cur_pos_ptr);
void ReadScanline(int32_t row_num, uint8_t* row_buf);
bool GetRecordPosition(uint32_t cur_pos,
int32_t left,
int32_t top,
int32_t width,
int32_t height,
int32_t pal_num,
GifPalette* pal_ptr,
int32_t delay_time,
bool user_input,
int32_t trans_index,
int32_t disposal_method,
bool interlace);
jmp_buf jmpbuf;
std::vector<GifPalette> m_GlobalPalette;
int32_t global_pal_num;
uint32_t img_row_offset;
uint32_t img_row_avail_size;
uint32_t avail_in;
int32_t decode_status;
uint32_t skip_size;
char* err_ptr;
FXGIF_Context* gif_context;
CFX_ByteString cmt_data;
std::unique_ptr<GifGCE> m_GifGCE;
uint8_t* next_in;
std::vector<std::unique_ptr<GifImage>> m_Images;
std::unique_ptr<CGifLZWDecoder> m_ImgDecoder;
int width;
int height;
uint8_t bc_index;
uint8_t pixel_aspect;
uint8_t global_sort_flag;
uint8_t global_color_resolution;
uint8_t img_pass_num;
};
#endif // CORE_FXCODEC_LGIF_CGIFDECOMPRESSOR_H_
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