// 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 | |
#include <setjmp.h> | |
#include "core/include/fxcrt/fx_basic.h" | |
#define BMP_SUPPORT_BITFIELD | |
#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 { | |
FX_WORD bfType; | |
FX_DWORD bfSize; | |
FX_WORD bfReserved1; | |
FX_WORD bfReserved2; | |
FX_DWORD bfOffBits; | |
} BmpFileHeader, *BmpFileHeaderPtr; | |
typedef struct tagBmpCoreHeader { | |
FX_DWORD bcSize; | |
FX_WORD bcWidth; | |
FX_WORD bcHeight; | |
FX_WORD bcPlanes; | |
FX_WORD bcBitCount; | |
} BmpCoreHeader, *BmpCoreHeaderPtr; | |
typedef struct tagBmpInfoHeader { | |
FX_DWORD biSize; | |
int32_t biWidth; | |
int32_t biHeight; | |
FX_WORD biPlanes; | |
FX_WORD 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; | |
FX_WORD 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; | |
#ifdef BMP_SUPPORT_BITFIELD | |
FX_DWORD mask_red; | |
FX_DWORD mask_green; | |
FX_DWORD mask_blue; | |
#endif | |
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); | |
#define BMP_PTR_NOT_NULL(ptr, bmp_ptr) \ | |
if (ptr == NULL) { \ | |
_bmp_error(bmp_ptr, "Out Of Memory"); \ | |
return 0; \ | |
} | |
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; | |
FX_WORD pal_num; | |
#ifdef BMP_SUPPORT_BITFIELD | |
uint8_t bit_type; | |
#endif | |
}; | |
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); |