解码的是16×16图片，从比特流到Z排序都和验证数据相同。但生成的彩条太离谱。
Jpeg编码已完成，解码不想再完普了，想得出来问题出在Y亮度分量的排序上面。此前学jpeg是想搞一个摄像头压缩程序，可现在搞出来2秒才能编码一帧图片，没有实用价值。查网络主要是余弦转换的浮点运算太多，数学不好不想再伤脑了。转而去学ffmpeg,借用它的库函数来完成信号压缩。
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <linux/videodev2.h>
#include <string.h>
#include <sys/mman.h>
#include <linux/fb.h>
#include <math.h>
#define file1 "/home/wjs/Pictures/4.jpeg"
#define PI 3.1415926
#define pic_width 16
#define pic_heigth 16 //yuv420p y:pic_width*pic_heigth u:v=y/4
//8*8块 y: pic_width*pic_heigth/64 u:v=pic_width*pic_heigth/(4*64)
char ali(char len, char i);
char y_dc(unsigned char len, int bit );
char y_ac(unsigned char cd, unsigned int i, unsigned char out[2]);
char uv_ac(unsigned char cd, unsigned int i, unsigned char out[2]);
char uv_dc(unsigned char len, int bit );
int zh(int (*i)[2],int t,unsigned char (*out)[64],unsigned char lh[64]);
int jlh(int i[64], unsigned char lhb[64], double o[64]);
int IDCT(double i[64],unsigned char out[64]);
int main(void) {
//-------JPEG通用量化表--------------------------------
unsigned char lhb0[0x45] = {0xff, 0xdb, 0, 0x43, 0,
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
// 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
};
unsigned char lhb1[0x45] = {0xff, 0xdb, 0, 0x43, 1,
17, 18, 24, 47, 99, 99, 99, 99, //17,18,24,47
18, 21, 26, 66, 99, 99, 99, 99, //18,21,26,66,
24, 26, 56, 99, 99, 99, 99, 99, //24,26,56
47, 66, 99, 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
// 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
};
unsigned char data[] = {
131 ,251 ,51 ,254 ,154 ,255 ,0 ,227 ,180 ,127 ,102 ,127 ,211 ,95 ,252 ,118 ,173 ,255 ,0 ,194 ,
11 ,255 ,0 ,81 ,31 ,252 ,131 ,255 ,0 ,215 ,163 ,254 ,16 ,95 ,250 ,136 ,255 ,0 ,228 ,31 ,254 ,
189 ,31 ,217 ,244 ,191 ,231 ,255 ,0 ,254 ,74 ,31 ,91 ,204 ,127 ,231 ,239 ,224 ,143,0xff,0xd9};
typedef struct {
unsigned char b1: 1;
unsigned char b2: 1;
unsigned char b3: 1;
unsigned char b4: 1;
unsigned char b5: 1;
unsigned char b6: 1;
unsigned char b7: 1;
unsigned char b8: 1;
} BIT;
BIT bit;
unsigned char z[5000000] = {};
int t = 0;
int tz=0;
while(1){
if ((data[t] == 0xff) && (data[t + 1] == 0xd9)) {
break;
}
memset(&bit, 0, 1);
memcpy(&bit, &data[t], 1);
z[tz + 0] = bit.b8;
z[tz + 1] = bit.b7;
z[tz + 2] = bit.b6;
z[tz + 3] = bit.b5;
z[tz + 4] = bit.b4;
z[tz + 5] = bit.b3;
z[tz + 6] = bit.b2;
z[tz + 7] = bit.b1;
if ((data[t] == 0xff) && (data[t + 1] == 0)) {
t = t + 2;
} else {
t++;
}
tz=tz+8;
}
int a=0;
//------- -------------------------
int o_y[pic_heigth*pic_width][2]={}; //[1]=0的个数 [0]=系数
int o_u[pic_heigth*pic_width][2]={};
int o_v[pic_heigth*pic_width][2]={};
int jb = 0; //比特流指针
//-----------提取Y------------------------------------------
int ny=0; //0个数+系数对的个数
int ycs=0;
for(int xh=0;xh<4;xh++){ //MCU 中4个Y 1个U 1个V
//---------0Y_DC------------------
int ybc=0;
for ( a = 2; a < 18; a++) {
int ls = 0;
int b = 0;
for (b = 0; b < a; b++) {
ls = ls + z[jb + b] * (pow(2, (a - b - 1)));
}
int ws = y_dc(a, ls);
if (ws >= 0) {
jb = jb + a;
int ls = 0;
for (int b = 0; b < ws; b++) {
ls = ls + z[jb + b] * (pow(2, (ws - b - 1)));
}
// o_y[ny][0] = ali(ws, ls);
ybc=ali(ws,ls)+ycs;
o_y[ny][0]=ybc;
ycs=ybc;
o_y[ny][1] = 88; //代表是DC
jb = jb + ws;
ny++;
break;
}
if (a == 17) {
puts("hfm error");
exit(-1);
}
}
//-----0Y_AC------------------------------
while (1) {
for ( a = 2; a <18; a++) {
if (a>17) {
puts("hfm error");
exit(-1);
}
int ls = 0;
int b = 0;
unsigned char o1[2] = {};
for (b = 0; b < a; b++) {
ls = ls + z[jb + b] * (pow(2, (a - b - 1)));
}
int ws = y_ac(a, ls, o1);
if (ws >= 0) {
jb = jb + a;
int ls = 0;
for (int b = 0; b < o1[1]; b++) {
ls = ls + z[jb + b] * (pow(2, (o1[1] - b - 1)));
}
jb = jb + o1[1];
o_y[ny][1] = o1[0];
o_y[ny][0] = ali(o1[1], ls);
ny++;
break;
}
}
if ((o_y[ny - 1][0] == 0) && (o_y[ny - 1][1] == 0)) {
break;
}
}
}
//++++++++U_DC+++++++++++++++++++++++++++++++++++++++
int ucs=0;
int nu=0;
int ubc=0;
for ( a = 2; a < 18; a++) {
int ls = 0;
int b = 0;
for (b = 0; b < a; b++) {
ls = ls + z[jb + b] * (pow(2, (a - b - 1)));
}
char ws = uv_dc(a, ls);
if (ws >= 0) {
jb = jb + a;
int ls = 0;
for (int b = 0; b < ws; b++) {
ls = ls + z[jb + b] * (pow(2, (ws - b - 1)));
}
jb=jb+ws;
// o_u[nu][0] = ali(ws, ls);
ubc=ali(ws,ls)+ucs;
o_u[nu][0]=ubc;
ucs=ubc;
o_u[nu][1] = 88;
nu++;
break;
}
if (a == 17) {
puts("hfm error");
exit(-1);
}
}
//--------U_AC------------------------
while (1) {
for ( a = 2; a < 18; a++) {
unsigned int ls = 0;
unsigned char o1[2] = {};
for (int b = 0; b < a; b++) {
ls = ls + z[jb + b] * (pow(2, (a - b-1 ))); //ls = ls + z[jb + b] * (pow(2, (a - b - 1)));
}
char ws = uv_ac(a,ls,o1);
char n0=o1[0];
char ws1=o1[1];
if (ws>=0) {
jb = jb + a;
unsigned int ls = 0;
for (int b = 0; b <ws1; b++) {
ls = ls + z[jb + b] * (pow(2, (ws1- b - 1)));
}
jb = jb + ws1;
o_u[nu][1] =n0;//ac 中0 的个数
o_u[nu][0] = ali(ws1, ls); //ac 系数
nu++;
break;
}
//---------------------------------------------------
if (a == 17) {
puts("hfm error");
exit(-1);
}
}
//------------------------------------------------
if ((o_u[nu - 1][0] == 0) && (o_u[nu - 1][1] == 0)) {
break;
}
}
//----------------------V----------------------------------------------
//--------V_DC--------------------------------------------
int nv=0;
int vcs=0;
int vbc=0;
for ( a = 2; a < 18; a++) {
int ls = 0;
int b = 0;
for (b = 0; b < a; b++) {
ls = ls + z[jb + b] * (pow(2, (a - b - 1)));
}
char ws = uv_dc(a, ls);
if (ws >= 0) {
jb = jb + a;
int ls = 0;
for (int b = 0; b < ws; b++) {
ls = ls + z[jb + b] * (pow(2, (ws - b - 1)));
}
jb=jb+ws;
// o_v[nv][0] = ali(ws, ls);
vbc=ali(ws,ls)+vcs;
o_v[nv][0]=vbc;
vcs=vbc;
o_v[nv][1] = 88;
nv++;
break;
}
if (a == 17) {
puts("hfm error");
exit(-1);
}
}
//--------V_AC------------------------
while (1) {
for ( a = 2; a < 18; a++) {
unsigned int ls = 0;
unsigned char o1[2] = {};
for (int b = 0; b < a; b++) {
ls = ls + z[jb + b] * (pow(2, (a - b-1 ))); //ls = ls + z[jb + b] * (pow(2, (a - b - 1)));
}
char ws = uv_ac(a,ls,o1);
char n0=o1[0];
char ws1=o1[1];
if (ws>=0) {
jb = jb + a;
unsigned int ls = 0;
for (int b = 0; b <ws1; b++) {
ls = ls + z[jb + b] * (pow(2, (ws1- b - 1)));
}
jb = jb + ws1;
o_v[nv][1] =n0;//ac 中0 的个数
o_v[nv][0] = ali(ws1, ls); //ac 系数
nv++;
break;
}
//---------------------------------------------------
if (a == 17) {
puts("hfm error");
exit(-1);
}
}
//------------------------------------------------
if ((o_v[nv - 1][0] == 0) && (o_v[nv - 1][1] == 0)) {
break;
}
}
//--------------------------
unsigned char y64[pic_heigth*pic_width/64][64]={};
unsigned char u64[pic_heigth*pic_width/256][64]={};
unsigned char v64[pic_heigth*pic_width/256][64]={};
zh(o_y,ny,y64,lhb0);
zh(o_u,nu,u64,lhb1);
zh(o_v,nv,v64,lhb1);
//-+++++++++++++++++++++++++++++++++++++++++++++++++++++++++
unsigned char yw[pic_heigth * pic_width] = {};
int yt=0;
for (int y = 0; y < pic_heigth; y = y + 8) { //提取左上角点的垂直数据
for (int x = 0; x < pic_width; x = x + 8) { //提取左上角点的水平数据
for (int a = 0; a < 8; a++) {
for (int b = 0; b < 8; b++) {
yw[pic_width* (a + y) + (b + x)]=y64[yt][a*8+b];
}
}
yt++;
}
}
unsigned char uw[pic_heigth * pic_width] = {};
int ut=0;
for (int y = 0; y < pic_heigth/2; y = y + 8) { //提取左上角点的垂直数据
for (int x = 0; x < pic_width/2; x = x + 8) { //提取左上角点的水平数据
for (int a = 0; a < 8; a++) {
for (int b = 0; b < 8; b++) {
uw[pic_width/2 * (a + y) + (b + x)]=u64[ut][a*8+b];
}
}
ut++;
}
}
unsigned char vw[pic_heigth * pic_width] = {};
int vt=0;
for (int y = 0; y < pic_heigth/2; y = y + 8) { //提取左上角点的垂直数据
for (int x = 0; x < pic_width/2; x = x + 8) { //提取左上角点的水平数据
for (int a = 0; a < 8; a++) {
for (int b = 0; b < 8; b++) {
vw[pic_width/2 * (a + y) + (b + x)]=v64[vt][a*8+b];
}
}
vt++;
}
}
FILE *w=fopen("/home/wjs/ok.yuv","w+b");
fwrite(yw,pic_heigth*pic_width,1,w);
fwrite(uw,pic_heigth*pic_width/4,1,w);
fwrite(vw,pic_heigth*pic_width/4,1,w);
fclose(w);
return 0;
}
//++++++++++++++++++++++++++++++++++++++++++++++++
//--------Z 正向排序-------------------------------
int jzz( int i[64],int out[64]) {
int zb[64] = {0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 5, 12, 19, 26, 33, 40, 48, 41, 34, 27, 20, 13, 6,
7, 14, 21, 28, 35, 42, 49, 56, 57, 50, 43, 36, 29, 22, 15, 23, 30, 37, 44, 51, 58, 59, 52, 45, 38, 31, 39, 46, 53, 60, 61, 54, 47,
55, 62, 63
};
for (int a = 0; a < 64; a++) {
out[zb[a]]=i[a];
}
return 0;
}
//---反量化---------------
int jlh(int i[64], unsigned char lhb[64], double o[64]) {
for (int a = 0; a < 64; a++) {
o[a] = round((i[a]) * (lhb[a]));
}
return 0;
}
//-------z中间格式转8×8块------------------------------------------------
int zh(int (*i)[2],int t,unsigned char (*out)[64],unsigned char lh[64]){
int o[64]={};
int lhs[64]={};
double flh[64]={};
int n_z=0; //y(0个数+系数)的数量指针
int n88=0 ; //y8*8的总块数
while(n_z<t){
int c=0; //8×8 下标
// if((i[n_z][1]!=0)&&(i[n_z][0]!=0)){
o[c]=i[n_z][0]; //DC
n_z++;
c++;
// }
while(1){
if((i[n_z][1]==0)&&(i[n_z][0]==0)){
for(int a=c;a<64;a++){
o[c]=0;
}
n_z++;
jzz(o,lhs); //jzz
jlh(lhs,lh,flh);
IDCT(flh,out[n88]);
n88++;
break;
}
if((i[n_z][1]==0)&&(i[n_z][0]!=0)){
o[c]=i[n_z][0];
c++;
n_z++;
}
if(i[n_z][1]!=0){
for(int a=0;a<i[n_z][1];a++){
o[c]=0;
c++;
}
o[c]=i[n_z][0];
c++;
n_z++;
}
}
}
return 0;
}
//--------IDCT------------------------------
int IDCT(double i[64],unsigned char out[64]){
double (*p)[8]=(double (*)[8])i;
double s;
double au;
double av;
unsigned char o[8][8]={};
for(int y=0;y<8;y++){
for(int x=0;x<8;x++){
for(int u=0;u<8;u++){
for(int v=0;v<8;v++){
if(u==0){
au=1.0/sqrt(2);
}else{
au=1.0;
}
if(v==0){
av=1.0/sqrt(2);
}else{
av=1.0;
}
s=s+(1.0/4)*au*av*p[u][v]*cos((2*y+1)*u*PI/16)*cos((2*x+1)*v*PI/16);
}
}
o[y][x]=s+128;
s=0;
}
}
memcpy(out,o,64);
return 0;
}
//------------------------
char ali(char len, char i) { //ALI
char o;
if ((len == 0) ) {
o = 0;
}
if ((len == 1) && (i == 0)) {
o = -1;
}
if ((len == 1) && (i == 1)) {
o = 1;
}
//--------------------------
if ((i >= pow(2, len - 1)) && (i <= pow(2, len))) {
o = i;
}
if ((i >= 0) && (i < pow(2, len - 1))) {
o = i - pow(2, len) + 1;
}
return o;
}
char y_dc(unsigned char len, int bit ) { //
if ((len == 2) && (bit == 0b00)) {
return 0;
}
if ((len == 3) && (bit == 0b010)) {
return 1;
}
if ((len == 3) && (bit == 0b011)) {
return 2;
}
if ((len == 3) && (bit == 0b100)) {
return 3;
}
if ((len == 3) && (bit == 0b101)) {
return 4;
}
if ((len == 3) && (bit == 0b110)) {
return 5;
}
if ((len == 4) && (bit == 0b1110)) {
return 6;
}
if ((len == 5) && (bit == 0b11110)) {
return 7;
}
if ((len == 6) && (bit == 0b111110)) {
return 8;
}
if ((len == 7) && (bit == 0b1111110)) {
return 9;
}
if ((len == 8) && (bit == 0b11111110)) {
return 10;
}
if ((len == 9) && (bit == 0b111111110)) {
return 11;
} else return -1;
}
//----------------------------------
char y_ac(unsigned char cd, unsigned int i, unsigned char out[2]) {
char bb = 1;
unsigned int i_bit = i;
unsigned char i_len = cd;
unsigned char len;
unsigned char o;
unsigned char ws[16] = {0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d};
unsigned char zh[162] = {0x1, 0x2, 0x3, 0x0, 0x4, 0x11, 0x5, 0x12, 0x21, 0x31, 0x41, 0x6, 0x13, 0x51, 0x61, 0x7,
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, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
0xf9, 0xfa
};
unsigned char cx_ws, cx_b;
unsigned char hfm[17][0x7e] = {};
unsigned char *zz = (unsigned char *)hfm;
for (int a = 0; a < 17* 0x7e; a++) {
zz[a] = 0xff;
}
int t = 0;
for (int a = 0; a < 16; a++) {
if (ws[a] == 0) {
continue;
}
for (int b = 0; b < ws[a]; b++) {
hfm[a + 1][b] = zh[t];
t++;
}
}
//---------------------------------------
cx_ws = i_len;
int o_js = 0;
if (cx_ws == 2) { // 00-1 01-2
o_js = 0b00;
cx_b = i_bit - o_js;
}
if (cx_ws == 3) { //100-3
o_js = 0b100;
cx_b = i_bit - o_js;
}
if (cx_ws == 4) { //1010-0 1011-4 1100-11
o_js = 0b1010;
cx_b = i_bit - o_js;
}
if (cx_ws == 5) { //11010-5 11011-12 11100 -21
o_js = 0b11010;
cx_b = i_bit - o_js;
}
if (cx_ws == 6) {
o_js = 0b111010;
cx_b = i_bit - o_js;
}
if (cx_ws == 7) {
o_js = 0b1111000;
cx_b = i_bit - o_js;
}
if (cx_ws == 8) {
o_js = 0b11111000;
cx_b = i_bit - o_js;
}
if (cx_ws == 9) {
o_js = 0b111110110;
cx_b = i_bit - o_js;
}
if (cx_ws == 10) {
o_js = 0b1111110110;
cx_b = i_bit - o_js;
}
if (cx_ws == 11) {
o_js = 0b11111110110;
cx_b = i_bit - o_js;
}
if (cx_ws == 12) {
o_js = 0b111111110100;
cx_b = i_bit - o_js;
}
if (cx_ws == 15) {
o_js = 0b111111111000000;
cx_b = i_bit - o_js;
}
if (cx_ws == 16) {
o_js = 0b1111111110000010;
cx_b = i_bit - o_js;
}
//-----------------------------------------
unsigned char o_zj = hfm[cx_ws][cx_b];
if (o_zj == 0xff) bb = -1;
len = o_zj / 16;
o = o_zj % 16;
out[0] = len;
out[1] = o;
if ((cx_ws == 4) && ((i_bit - 0b1010) == 0)) {
out[0] = 0;
out[1] = 0;
bb = 0;
}
if(cx_ws>16){
bb=-1;
}
return bb;
}
char uv_dc(unsigned char len, int bit ) {
if ((len == 2) && (bit == 0b00)) {
return 0;
}
if ((len == 2) && (bit == 0b01)) {
return 1;
}
if ((len == 2) && (bit == 0b10)) {
return 2;
}
if ((len == 3) && (bit == 0b110)) {
return 3;
}
if ((len == 4) && (bit == 0b1110)) {
return 4;
}
if ((len == 5) && (bit == 0b11110)) {
return 5;
}
if ((len == 6) && (bit == 0b111110)) {
return 6;
}
if ((len == 7) && (bit == 0b1111110)) {
return 7;
}
if ((len == 8) && (bit == 0b11111110)) {
return 8;
}
if ((len == 9) && (bit == 0b111111110)) {
return 9;
}
if ((len == 10) && (bit == 0b1111111110)) {
return 10;
}
if ((len == 11) && (bit == 0b11111111110)) {
return 11;
} else return -1;
}
char uv_ac(unsigned char cd, unsigned int i, unsigned char out[2]) {
char bb = 1;
unsigned int i_bit = i;
unsigned char i_len = cd;
unsigned char len;
unsigned char o;
unsigned char ws[16] = {0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77};
unsigned char zh[162 ] = {0x00, 0x1, 0x2, 0x3, 0x11, 0x4, 0x5, 0x21, 0x31, 0x6, 0x12, 0x41, 0x51, 0x7, 0x61, 0x71,
0x13, 0x22, 0x32, 0x81, 0x8, 0x14, 0x42, 0x91, 0xa1, 0xb1, 0xc1, 0x9, 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
};
unsigned char cx_ws, cx_b;
unsigned char hfm1[19][0x78] = {};
unsigned char *zz = (unsigned char *)hfm1;
for (int a = 0; a < 19 * 0x78; a++) {
zz[a] = 0xff;
}
int t = 0;
for (int a = 0; a < 16; a++) {
if (ws[a] == 0) {
continue;
}
for (int b = 0; b < ws[a]; b++) {
hfm1[a+1][b] = zh[t];
t++;
}
}
//---------------------------------------
cx_ws = i_len;
int o_js = 0;
if (cx_ws == 2) {
o_js = 0b00; //00(EOF) 01(1)
cx_b = i_bit - o_js;
}
if (cx_ws == 3) {
o_js = 0b100; //100(2)
cx_b = i_bit - o_js;
}
if (cx_ws == 4) {
o_js = 0b1010; //1010(3) 1011(11)
cx_b = i_bit - o_js;
}
if (cx_ws == 5) {
o_js = 0b11000; //11000(4) 11001(5) 11010(21) 11011(31)
cx_b = i_bit - o_js;
}
if (cx_ws == 6) { //111000(6) 111001(12) 111010(41) 111011(51)
o_js = 0b111000;
cx_b = i_bit - o_js;
}
if (cx_ws == 7) { //1111000(7) 1111001(61) 1111010(71)
o_js = 0b1111000;
cx_b = i_bit - o_js;
}
if (cx_ws == 8) { //11110110(13) 11110111(22) 11111000(32) 11111001 (81)
o_js = 0b11110110;
cx_b = i_bit - o_js;
}
if (cx_ws == 9) { //111110100(8) 111110101(14) 111110110(42) 111110111(91) 111111000(a1) 111111001(b1) 111111010(c1)
o_js = 0b111110100;
cx_b = i_bit - o_js;
}
if (cx_ws == 10) { //1111110110(9) 1111110111(23) 1111111000(33) 1111111001(52) 1111111010(f0)
o_js = 0b1111110110;
cx_b = i_bit - o_js;
}
if (cx_ws == 11) { //11111110110(15) 11111110111(62) 11111111000(72) 11111111001(d1)
o_js = 0b11111110110;
cx_b = i_bit - o_js;
}
if (cx_ws == 12) {
o_js = 0b111111110100; //111111110100(0a) 111111110101(16) 111111110110 (24) 111111110111(34)
cx_b = i_bit - o_js;
}
if (cx_ws == 14) {
o_js = 0b11111111100000; //11111111100000(e1)
cx_b = i_bit - o_js;
}
if (cx_ws == 15) {
o_js = 0b111111111000010; //111111111000010 (25) 111111111000011(f1)
cx_b = i_bit - o_js;
}
if (cx_ws == 16) {
o_js = 0b1111111110001000;
cx_b = i_bit - o_js;
}
//-----------------------------------------
unsigned char o_zj = hfm1[cx_ws][cx_b];
if (o_zj == 0xff) {
bb = -1;
}
if ((cx_ws == 2) && (cx_b == 0)) {
out[0] = 0;
out[1] = 0;
bb = 0;
}
len = o_zj / 16;
o = o_zj % 16;
out[0] = len;
out[1] = o;
return bb;
}
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