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