311 lines
8.4 KiB
C
311 lines
8.4 KiB
C
|
|
#ifndef __CJPEG_H
|
|
#define __CJPEG_H
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdbool.h>
|
|
|
|
typedef unsigned char UINT8;
|
|
typedef unsigned short UINT16;
|
|
typedef unsigned int UINT32;
|
|
|
|
typedef char INT8;
|
|
typedef short INT16;
|
|
typedef int INT32;
|
|
|
|
//typedef unsigned char bool; /* no bool type in C */
|
|
//#define true 1;
|
|
//#define false 0;
|
|
|
|
|
|
#define FILE_TYPE_ERR "file type error", 1
|
|
#define FILE_OPEN_ERR "fopen: open file error", 2
|
|
#define FILE_READ_ERR "fread: read file error", 3
|
|
#define BUFFER_ALLOC_ERR "malloc: alloc buffer error", 4
|
|
#define BUFFER_READ_ERR "fread: read buffer error", 5
|
|
#define BUFFER_WRITE_ERR "fwrite: write buffer error", 6
|
|
|
|
|
|
#define REVERSED /* regularly, BMP image is stored reversely */
|
|
|
|
#define MEM_OUT_SIZE 1 << 17 /* alloc output memory with 128 KB */
|
|
#define BMP_HEAD_LEN 54 /* file head length of BMP image */
|
|
#define COMP_NUM 3 /* number of components */
|
|
#define PRECISION 8 /* data precision */
|
|
#define DCTSIZE 8 /* data unit size */
|
|
#define DCTSIZE2 64 /* data unit value number */
|
|
|
|
|
|
typedef enum { /* JPEG marker codes */
|
|
M_SOF0 = 0xc0,
|
|
M_SOF1 = 0xc1,
|
|
M_SOF2 = 0xc2,
|
|
M_SOF3 = 0xc3,
|
|
|
|
M_SOF5 = 0xc5,
|
|
M_SOF6 = 0xc6,
|
|
M_SOF7 = 0xc7,
|
|
|
|
M_JPG = 0xc8,
|
|
M_SOF9 = 0xc9,
|
|
M_SOF10 = 0xca,
|
|
M_SOF11 = 0xcb,
|
|
|
|
M_SOF13 = 0xcd,
|
|
M_SOF14 = 0xce,
|
|
M_SOF15 = 0xcf,
|
|
|
|
M_DHT = 0xc4,
|
|
|
|
M_DAC = 0xcc,
|
|
|
|
M_RST0 = 0xd0,
|
|
M_RST1 = 0xd1,
|
|
M_RST2 = 0xd2,
|
|
M_RST3 = 0xd3,
|
|
M_RST4 = 0xd4,
|
|
M_RST5 = 0xd5,
|
|
M_RST6 = 0xd6,
|
|
M_RST7 = 0xd7,
|
|
|
|
M_SOI = 0xd8,
|
|
M_EOI = 0xd9,
|
|
M_SOS = 0xda,
|
|
M_DQT = 0xdb,
|
|
M_DNL = 0xdc,
|
|
M_DRI = 0xdd,
|
|
M_DHP = 0xde,
|
|
M_EXP = 0xdf,
|
|
|
|
M_APP0 = 0xe0,
|
|
M_APP1 = 0xe1,
|
|
M_APP2 = 0xe2,
|
|
M_APP3 = 0xe3,
|
|
M_APP4 = 0xe4,
|
|
M_APP5 = 0xe5,
|
|
M_APP6 = 0xe6,
|
|
M_APP7 = 0xe7,
|
|
M_APP8 = 0xe8,
|
|
M_APP9 = 0xe9,
|
|
M_APP10 = 0xea,
|
|
M_APP11 = 0xeb,
|
|
M_APP12 = 0xec,
|
|
M_APP13 = 0xed,
|
|
M_APP14 = 0xee,
|
|
M_APP15 = 0xef,
|
|
|
|
M_JPG0 = 0xf0,
|
|
M_JPG13 = 0xfd,
|
|
M_COM = 0xfe,
|
|
|
|
M_TEM = 0x01,
|
|
|
|
M_ERROR = 0x100
|
|
} JPEG_MARKER;
|
|
|
|
|
|
typedef struct {
|
|
UINT8 len;
|
|
UINT16 val;
|
|
} BITS;
|
|
|
|
|
|
/* zigzag table */
|
|
|
|
static UINT8 ZIGZAG[DCTSIZE2] = {
|
|
0, 1, 5, 6, 14, 15, 27, 28,
|
|
2, 4, 7, 13, 16, 26, 29, 42,
|
|
3, 8, 12, 17, 25, 30, 41, 43,
|
|
9, 11, 18, 24, 31, 40, 44, 53,
|
|
10, 19, 23, 32, 39, 45, 52, 54,
|
|
20, 22, 33, 38, 46, 51, 55, 60,
|
|
21, 34, 37, 47, 50, 56, 59, 61,
|
|
35, 36, 48, 49, 57, 58, 62, 63
|
|
};
|
|
|
|
|
|
/* RGB to YCbCr table */
|
|
|
|
typedef struct {
|
|
INT32 r2y[256];
|
|
INT32 r2cb[256];
|
|
INT32 r2cr[256];
|
|
INT32 g2y[256];
|
|
INT32 g2cb[256];
|
|
INT32 g2cr[256];
|
|
INT32 b2y[256];
|
|
INT32 b2cb[256];
|
|
INT32 b2cr[256];
|
|
} ycbcr_tables;
|
|
|
|
extern ycbcr_tables ycc_tables;
|
|
|
|
/* store color unit in YCbCr */
|
|
|
|
typedef struct {
|
|
float y[DCTSIZE2];
|
|
float cb[DCTSIZE2];
|
|
float cr[DCTSIZE2];
|
|
} ycbcr_unit;
|
|
|
|
|
|
/* standard quantization tables */
|
|
|
|
static UINT8 STD_LU_QTABLE[DCTSIZE2] = { /* luminance */
|
|
16, 11, 10, 16, 24, 40, 51, 61,
|
|
12, 12, 14, 19, 26, 58, 60, 55,
|
|
14, 13, 16, 24, 40, 57, 69, 56,
|
|
14, 17, 22, 29, 51, 87, 80, 62,
|
|
18, 22, 37, 56, 68, 109, 103, 77,
|
|
24, 35, 55, 64, 81, 104, 113, 92,
|
|
49, 64, 78, 87, 103, 121, 120, 101,
|
|
72, 92, 95, 98, 112, 100, 103, 99
|
|
};
|
|
|
|
static UINT8 STD_CH_QTABLE[DCTSIZE2] = { /* chrominance */
|
|
17, 18, 24, 47, 99, 99, 99, 99,
|
|
18, 21, 26, 66, 99, 99, 99, 99,
|
|
24, 26, 56, 99, 99, 99, 99, 99,
|
|
47, 66, 99, 99, 99, 99, 99, 99,
|
|
99, 99, 99, 99, 99, 99, 99, 99,
|
|
99, 99, 99, 99, 99, 99, 99, 99,
|
|
99, 99, 99, 99, 99, 99, 99, 99,
|
|
99, 99, 99, 99, 99, 99, 99, 99
|
|
};
|
|
|
|
static double AAN_SCALE_FACTOR[DCTSIZE] = {
|
|
1.0,
|
|
1.387039845,
|
|
1.306562965,
|
|
1.175875602,
|
|
1.0,
|
|
0.785694958,
|
|
0.541196100,
|
|
0.275899379
|
|
};
|
|
|
|
/* store scaled quantization tables */
|
|
|
|
typedef struct {
|
|
UINT8 lu[DCTSIZE2];
|
|
UINT8 ch[DCTSIZE2];
|
|
} quant_tables;
|
|
|
|
extern quant_tables q_tables;
|
|
|
|
/* store color unit after quantizing operation */
|
|
|
|
typedef struct {
|
|
INT16 y[DCTSIZE2];
|
|
INT16 cb[DCTSIZE2];
|
|
INT16 cr[DCTSIZE2];
|
|
} quant_unit;
|
|
|
|
|
|
/* standard huffman tables */
|
|
|
|
/* luminance DC */
|
|
|
|
static UINT8 STD_LU_DC_NRCODES[17] = { /* code No. */
|
|
0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0};
|
|
|
|
static UINT8 STD_LU_DC_VALUES[12] = { /* code value */
|
|
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
|
|
|
|
/* chrominance DC */
|
|
|
|
static UINT8 STD_CH_DC_NRCODES[17] = {
|
|
0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0};
|
|
|
|
static UINT8 STD_CH_DC_VALUES[12] = {
|
|
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
|
|
|
|
/* luminance AC */
|
|
|
|
static UINT8 STD_LU_AC_NRCODES[17] = {
|
|
0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d};
|
|
|
|
static UINT8 STD_LU_AC_VALUES[162] = {
|
|
0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
|
|
0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
|
|
0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
|
|
0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
|
|
0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
|
|
0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
|
|
0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
|
|
0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
|
|
0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
|
|
0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
|
|
0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
|
|
0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
|
|
0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
|
|
0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
|
|
0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
|
|
0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
|
|
0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
|
|
0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
|
|
0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
|
|
0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
|
|
0xf9, 0xfa
|
|
};
|
|
|
|
/* chrominance AC */
|
|
|
|
static UINT8 STD_CH_AC_NRCODES[17] = {
|
|
0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77};
|
|
|
|
static UINT8 STD_CH_AC_VALUES[162] = {
|
|
0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
|
|
0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
|
|
0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
|
|
0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
|
|
0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
|
|
0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
|
|
0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
|
|
0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
|
|
0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
|
|
0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
|
|
0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
|
|
0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
|
|
0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
|
|
0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
|
|
0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
|
|
0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
|
|
0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
|
|
0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
|
|
0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
|
|
0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
|
|
0xf9, 0xfa
|
|
};
|
|
|
|
/* store precalculated huffman tables */
|
|
|
|
typedef struct {
|
|
BITS lu_dc[12];
|
|
BITS lu_ac[256];
|
|
BITS ch_dc[12];
|
|
BITS ch_ac[256];
|
|
} huff_tables;
|
|
|
|
extern huff_tables h_tables;
|
|
|
|
|
|
/* store BMP image informations */
|
|
|
|
typedef struct {
|
|
UINT32 size; /* bmp file size: 2- 5 */
|
|
UINT32 offset; /* offset between file start and data: 10-13 */
|
|
UINT32 width; /* pixel width of bmp image: 18-21 */
|
|
UINT32 height; /* pixel height of bmp image: 22-25 */
|
|
UINT16 bitppx; /* bit number per pixel: 28-29 */
|
|
UINT32 datasize; /* image data size: 34-37 */
|
|
} bmp_info;
|
|
|
|
|
|
extern void err_exit(const char *error_string, int exit_num);
|
|
|
|
|
|
#endif /* __CJPEG_H */
|
|
|