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