// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef CORE_FXCODEC_LBMP_FX_BMP_H_
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#define CORE_FXCODEC_LBMP_FX_BMP_H_
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#include <setjmp.h>
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#include "core/fxcrt/include/fx_basic.h"
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#define BMP_WIDTHBYTES(width, bitCount) ((width * bitCount) + 31) / 32 * 4
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#define BMP_PAL_ENCODE(a, r, g, b) \
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(((uint32_t)(a) << 24) | ((r) << 16) | ((g) << 8) | (b))
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#define BMP_D_STATUS_HEADER 0x01
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#define BMP_D_STATUS_PAL 0x02
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#define BMP_D_STATUS_DATA_PRE 0x03
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#define BMP_D_STATUS_DATA 0x04
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#define BMP_D_STATUS_TAIL 0x00
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#define BMP_SIGNATURE 0x4D42
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#define BMP_PAL_NEW 0
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#define BMP_PAL_OLD 1
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#define RLE_MARKER 0
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#define RLE_EOL 0
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#define RLE_EOI 1
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#define RLE_DELTA 2
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#define BMP_RGB 0L
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#define BMP_RLE8 1L
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#define BMP_RLE4 2L
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#define BMP_BITFIELDS 3L
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#define BMP_BIT_555 0
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#define BMP_BIT_565 1
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#define BMP_MAX_ERROR_SIZE 256
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#pragma pack(1)
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typedef struct tagBmpFileHeader {
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uint16_t bfType;
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uint32_t bfSize;
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uint16_t bfReserved1;
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uint16_t bfReserved2;
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uint32_t bfOffBits;
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} BmpFileHeader, *BmpFileHeaderPtr;
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typedef struct tagBmpCoreHeader {
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uint32_t bcSize;
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uint16_t bcWidth;
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uint16_t bcHeight;
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uint16_t bcPlanes;
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uint16_t bcBitCount;
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} BmpCoreHeader, *BmpCoreHeaderPtr;
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typedef struct tagBmpInfoHeader {
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uint32_t biSize;
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int32_t biWidth;
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int32_t biHeight;
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uint16_t biPlanes;
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uint16_t biBitCount;
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uint32_t biCompression;
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uint32_t biSizeImage;
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int32_t biXPelsPerMeter;
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int32_t biYPelsPerMeter;
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uint32_t biClrUsed;
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uint32_t biClrImportant;
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} BmpInfoHeader, *BmpInfoHeaderPtr;
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#pragma pack()
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typedef struct tag_bmp_decompress_struct bmp_decompress_struct;
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typedef bmp_decompress_struct* bmp_decompress_struct_p;
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typedef bmp_decompress_struct_p* bmp_decompress_struct_pp;
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struct tag_bmp_decompress_struct {
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jmp_buf jmpbuf;
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FX_CHAR* err_ptr;
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void (*bmp_error_fn)(bmp_decompress_struct_p gif_ptr, const FX_CHAR* err_msg);
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void* context_ptr;
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BmpFileHeaderPtr bmp_header_ptr;
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BmpInfoHeaderPtr bmp_infoheader_ptr;
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int32_t width;
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int32_t height;
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uint32_t compress_flag;
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int32_t components;
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int32_t src_row_bytes;
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int32_t out_row_bytes;
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uint8_t* out_row_buffer;
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uint16_t bitCounts;
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uint32_t color_used;
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FX_BOOL imgTB_flag;
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int32_t pal_num;
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int32_t pal_type;
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uint32_t* pal_ptr;
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uint32_t data_size;
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uint32_t img_data_offset;
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uint32_t img_ifh_size;
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int32_t row_num;
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int32_t col_num;
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int32_t dpi_x;
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int32_t dpi_y;
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uint32_t mask_red;
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uint32_t mask_green;
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uint32_t mask_blue;
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FX_BOOL (*bmp_get_data_position_fn)(bmp_decompress_struct_p bmp_ptr,
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uint32_t cur_pos);
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void (*bmp_get_row_fn)(bmp_decompress_struct_p bmp_ptr,
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int32_t row_num,
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uint8_t* row_buf);
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uint8_t* next_in;
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uint32_t avail_in;
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uint32_t skip_size;
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int32_t decode_status;
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};
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void bmp_error(bmp_decompress_struct_p bmp_ptr, const FX_CHAR* err_msg);
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bmp_decompress_struct_p bmp_create_decompress();
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void bmp_destroy_decompress(bmp_decompress_struct_pp bmp_ptr_ptr);
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int32_t bmp_read_header(bmp_decompress_struct_p bmp_ptr);
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int32_t bmp_decode_image(bmp_decompress_struct_p bmp_ptr);
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int32_t bmp_decode_rgb(bmp_decompress_struct_p bmp_ptr);
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int32_t bmp_decode_rle8(bmp_decompress_struct_p bmp_ptr);
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int32_t bmp_decode_rle4(bmp_decompress_struct_p bmp_ptr);
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uint8_t* bmp_read_data(bmp_decompress_struct_p bmp_ptr,
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uint8_t** des_buf_pp,
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uint32_t data_size);
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void bmp_save_decoding_status(bmp_decompress_struct_p bmp_ptr, int32_t status);
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void bmp_input_buffer(bmp_decompress_struct_p bmp_ptr,
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uint8_t* src_buf,
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uint32_t src_size);
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uint32_t bmp_get_avail_input(bmp_decompress_struct_p bmp_ptr,
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uint8_t** avail_buf_ptr);
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typedef struct tag_bmp_compress_struct bmp_compress_struct;
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typedef bmp_compress_struct* bmp_compress_struct_p;
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typedef bmp_compress_struct_p* bmp_compress_struct_pp;
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struct tag_bmp_compress_struct {
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BmpFileHeader file_header;
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BmpInfoHeader info_header;
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uint8_t* src_buf;
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uint32_t src_pitch;
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uint32_t src_row;
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uint8_t src_bpp;
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uint32_t src_width;
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FX_BOOL src_free;
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uint32_t* pal_ptr;
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uint16_t pal_num;
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uint8_t bit_type;
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};
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bmp_compress_struct_p bmp_create_compress();
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void bmp_destroy_compress(bmp_compress_struct_p bmp_ptr);
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FX_BOOL bmp_encode_image(bmp_compress_struct_p bmp_ptr,
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uint8_t*& dst_buf,
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uint32_t& dst_size);
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uint16_t GetWord_LSBFirst(uint8_t* p);
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void SetWord_LSBFirst(uint8_t* p, uint16_t v);
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#endif // CORE_FXCODEC_LBMP_FX_BMP_H_
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