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From: cvs at opencores.org<cvs@o...>
Date: Mon Jul 17 02:31:42 CEST 2006
Subject: [cvs-checkins] MODIFIED: mb-jpeg ...
Date: 00/06/07 17:02:31

Added: mb-jpeg/encoder dct.c dct.h header.h huffman.c huffman.h
io.c io.h main.c test.bmp types.h weights.h zzq.c
zzq.h
Log:
Reference encoder written by Joris van Emden Jul, 2006

It can be compiled and verified on Borland C++6.0 and doesn't work on cygwin/gcc


Revision Changes Path
1.1 mb-jpeg/encoder/dct.c

http://www.opencores.org/cvsweb.shtml/mb-jpeg/encoder/dct.c?rev=1.1&content-type=text/x-cvsweb-markup

Index: dct.c
===================================================================

#include <stdio.h>
#include "dct.h"
#include "weights.h"


/*
Function Name: dct

Operation: Find the 8x8 DCT of an array using separable DCT
First, finds 1-d DCT along rows, storing the result in inter[][]
Then, 1-d DCT along columns of inter[][] is found

Input: pixels is the 8x8 input array

Output: dct is the 8x8 output array
*/
signed int max_val = 0;
void dct(signed char pixels[8][8], signed short dct[8][8])
{
FILE * file;
int inr, inc; /* rows and columns of input image */
int intr, intc; /* rows and columns of intermediate image */
int outr, outc; /* rows and columns of dct */
int f_val; /* cumulative sum */
int inter[8][8]; /* stores intermediate result */
int i,j,k;
k=0;
// file = fopen("weights.h","w+");
// fprintf(file,"double weights1[512] = {");
/* find 1-d dct along rows */
for (intr=0; intr<8; intr++)
for (intc=0; intc<8; intc++) {
for (i=0,f_val=0; i<8; i++) {

f_val += (pixels[intr][i]* weights[k]);//cos((double)(2*i+1)*(double)intc*PI/16);
k++;
// fprintf(file, "\n%.0f,",cos((double)(2*i+1)*(double)intc*PI/16)*16384);
}
if (intc!=0)
inter[intr][intc] = f_val>>15;
else
inter[intr][intc] = (11585*(f_val>>14))>>15;

}
// fprintf(file,"\n};");
// fclose(file);
k=0;
/* find 1-d dct along columns */
for (outc=0; outc<8; outc++)
for (outr=0; outr<8; outr++) {
for (i=0,f_val=0; i<8; i++) {
f_val += (inter[i][outc] *weights[k]);
k++;
}
if (outr!=0)
dct[outr][outc] = f_val>>15;
else
dct[outr][outc] = (11585*(f_val>>14)>>15);
}


}

/*****************************************************************
UNCOMMENT THIS SECTION TO TEST 2D DCT
*****************************************************************/

/*
main()
{

unsigned char inputmatrix[8][8];
unsigned char outputmatrix[8][8];
unsigned int i,j;


printf("Input Matrix (8*8) :-\n");
for (i=0; i<8; i++){
printf("\n");
for (j=0;j<8;j++){
inputmatrix[i][j] = i*8+j;
printf("%4d",inputmatrix[i][j]);
}
} dct(inputmatrix,outputmatrix); printf("\n\nOutput Matrix (8*8) :-\n"); for (i=0; i<8; i++){ printf("\n"); for (j=0;j<8;j++){ printf("%4d",outputmatrix[i][j]); } } printf("\n"); } */ 1.1 mb-jpeg/encoder/dct.h http://www.opencores.org/cvsweb.shtml/mb-jpeg/encoder/dct.h?rev=1.1&content-type=text/x-cvsweb-markup Index: dct.h =================================================================== #include <math.h> #include <stdio.h> /* Function Name: dct Operation: Find the 8x8 DCT of an array using separable DCT First, finds 1-d DCT along rows, storing the result in inter[][] Then, 1-d DCT along columns of inter[][] is found Input: pixels is the 8x8 input array Output: dct is the 8x8 output array */ void dct(signed char pixels[8][8], signed short dct[8][8]); void IDCT(short input[8][8], signed char output[8][8]); 1.1 mb-jpeg/encoder/header.h http://www.opencores.org/cvsweb.shtml/mb-jpeg/encoder/header.h?rev=1.1&content-type=text/x-cvsweb-markup Index: header.h =================================================================== 0xff, 0xd8, 0xff, 0xe0, 0x0, 0x10, 0x4a, 0x46, 0x49, 0x46, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x1, 0x0, 0x0, 0xff, 0xdb, 0x0, 0x84, 0x0, 0x10, 0x8, 0x8, 0x10, 0xc, 0x8, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x20, 0x20, 0x10, 0x10, 0x10, 0x10, 0x20, 0x20, 0x20, 0x20, 0x20, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x80, 0x40, 0x40, 0x80, 0x80, 0x80, 0x80, 0x80, 0x40, 0x40, 0x80, 0x80, 0x80, 0x80, 0x80, 0x40, 0x80, 0x80, 0x80, 0x1, 0x10, 0x8, 0x8, 0x10, 0xc, 0x8, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x20, 0x20, 0x10, 0x10, 0x10, 0x10, 0x20, 0x20, 0x20, 0x20, 0x20, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x80, 0x40, 0x40, 0x80, 0x80, 0x80, 0x80, 0x80, 0x40, 0x40, 0x80, 0x80, 0x80, 0x80, 0x80, 0x40, 0x80, 0x80, 0x80, 0xff, 0xc0, 0x0, 0xb, 0x8, 0x1, 0x20, 0x1, 0xb0, 0x1, 0x1, 0x11, 0x0, 0xff, 0xc4, 0x0, 0xd2, 0x0, 0x0, 0x1, 0x5, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 0x10, 0x0, 0x2, 0x1, 0x3, 0x3, 0x2, 0x4, 0x3, 0x5, 0x5, 0x4, 0x4, 0x0, 0x0, 0x1, 0x7d, 0x1, 0x2, 0x3, 0x0, 0x4, 0x11, 0x5, 0x12, 0x21, 0x31, 0x41, 0x6, 0x13, 0x51, 0x61, 0x7, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x8, 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62, 0x72, 0x82, 0x9, 0xa, 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, 0xff, 0xda, 0x0, 0x8, 0x1, 0x1, 0x0, 0x0, 0x3f, 0x0, 1.1 mb-jpeg/encoder/huffman.c http://www.opencores.org/cvsweb.shtml/mb-jpeg/encoder/huffman.c?rev=1.1&content-type=text/x-cvsweb-markup Index: huffman.c =================================================================== #pragma argsused /* Only encoder This version works correctly, it is tested with testcase.jpg The translation into real huffman codes works. Changed: If huffman wants to send 0xFFxx (FF in one byte) than there must be 0x00 inserted between FF and xx possible fault in finish send: -must it be filled up with zeros? YES -must it be filled up to one bye? or 2 byte? --> in this code there is filled up to 2 bytes, but I (joris) thinks this must be filled up to 1 byte. still dont know - 24-11-05 code clean up - 24-11-05 tables added for color Block numbers: Y = 0 cb =1 cr= 2 */ //--------------------------------------------------------------------------- #pragma hdrstop #include <stdio.h> //=========================================================================== void PrintMatrix(char* pixelmatrix) { int i; printf("MATRIX= \n"); for (i=0;i<64;i++) printf("%d |",pixelmatrix[i]); printf("\n"); } //=========================================================================== void FillMatrix( char* pixelmatrix,int select) { int i; if (select== 0) { for (i=0;i<64;i++) pixelmatrix[i]=0; pixelmatrix[0]=6; pixelmatrix[1]=-4; pixelmatrix[2]=15; pixelmatrix[3]=4; pixelmatrix[7]=-1; pixelmatrix[11]=2; pixelmatrix[12]=2; pixelmatrix[20]=-1; } else if (select == 1 ) { for (i=0;i<64;i++) pixelmatrix[i]=0; pixelmatrix[0]=36; pixelmatrix[1]=-1; pixelmatrix[2]=1; pixelmatrix[3]=-2; pixelmatrix[4]=3; pixelmatrix[5]=-5; pixelmatrix[6]=0; pixelmatrix[7]=7; pixelmatrix[8]=4; pixelmatrix[9]=-10; pixelmatrix[12]=8; pixelmatrix[13]=-16; pixelmatrix[14]=17; pixelmatrix[33]=30; pixelmatrix[34]=-63; pixelmatrix[35]=-32; pixelmatrix[36]=50; pixelmatrix[40]=-100; pixelmatrix[41]=121; pixelmatrix[42]=100; pixelmatrix[47]=-3; pixelmatrix[48]=-2; pixelmatrix[49]=-7; pixelmatrix[50]=-15; pixelmatrix[51]=3; pixelmatrix[52]=7; } } //=========================================================================== void ConvertDCMagnitudeC(unsigned char magnitude,unsigned short int *out, unsigned short int *lenght) { switch (magnitude) { case 0x00 : *out=0x0000; *lenght=2; break; case 0x01 : *out=0x0001; *lenght=2; break; case 0x02 : *out=0x0002; *lenght=2; break; case 0x03 : *out=0x0006; *lenght=3; break; case 0x04 : *out=0x000e; *lenght=4; break; case 0x05 : *out=0x001e; *lenght=5; break; case 0x06 : *out=0x003e; *lenght=6; break; case 0x07 : *out=0x007e; *lenght=7; break; case 0x08 : *out=0x00fe; *lenght=8; break; case 0x09 : *out=0x01fe; *lenght=9; break; case 0x0a : *out=0x03fe; *lenght=10; break; case 0x0b : *out=0x07fe; *lenght=11; break; } } //=========================================================================== void ConvertACMagnitudeC(unsigned char magnitude,unsigned short int *out, unsigned short int *lenght) { switch (magnitude) { case 0x00 : *lenght=0x02; *out=0x0000; break; //1010 case 0x01 : *lenght=0x02; *out=0x0001; break; //00 case 0x02 : *lenght=0x03; *out=0x0004; break; //01 case 0x03 : *lenght=0x04; *out=0x000a; break; //100 case 0x04 : *lenght=0x05; *out=0x0018; break; //1011 case 0x05 : *lenght=0x05; *out=0x0019; break; //11010 case 0x06 : *lenght=0x06; *out=0x0038; break; //1111000 case 0x07 : *lenght=0x07; *out=0x0078; break; //11111000 case 0x08 : *lenght=0x09; *out=0x01f4; break; //1111110110 case 0x09 : *lenght=0x0a; *out=0x03f6; break; //1111111110000010 case 0x0A : *lenght=0x0c; *out=0x0ff4; break; //1111111110000011 case 0x11 : *lenght=0x04; *out=0x000b; break; //1100 case 0x12 : *lenght=0x06; *out=0x0039; break; //11011 case 0x13 : *lenght=0x08; *out=0x00f6; break; //1111001 case 0x14 : *lenght=0x09; *out=0x01f5; break; //111110110 case 0x15 : *lenght=0x0b; *out=0x07f6; break; //11111110110 case 0x16 : *lenght=0x0c; *out=0x0ff5; break; //1111111110000100 case 0x17 : *lenght=0x10; *out=0xff88; break; //1111111110000101 case 0x18 : *lenght=0x10; *out=0xff89; break; //1111111110000110 case 0x19 : *lenght=0x10; *out=0xff8a; break; //1111111110000111 case 0x1A : *lenght=0x10; *out=0xff8b; break; //1111111110001000 case 0x21 : *lenght=0x05; *out=0x001a; break; //11100 case 0x22 : *lenght=0x08; *out=0x00f7; break; //11111001 case 0x23 : *lenght=0x0a; *out=0x03f7; break; //1111110111 case 0x24 : *lenght=0x0c; *out=0x0ff6; break; //111111110100 case 0x25 : *lenght=0x0f; *out=0x7fc2; break; //1111111110001001 case 0x26 : *lenght=0x10; *out=0xff8c; break; //1111111110001010 case 0x27 : *lenght=0x10; *out=0xff8d; break; //1111111110001011 case 0x28 : *lenght=0x10; *out=0xff8e; break; //1111111110001100 case 0x29 : *lenght=0x10; *out=0xff8f; break; //1111111110001101 case 0x2A : *lenght=0x10; *out=0xff90; break; //1111111110001110 case 0x31 : *lenght=0x05; *out=0x001b; break; //111010 case 0x32 : *lenght=0x08; *out=0x00f8; break; //111110111 case 0x33 : *lenght=0x0a; *out=0x03f8; break; //111111110101 case 0x34 : *lenght=0x0c; *out=0x0ff7; break; //1111111110001111 case 0x35 : *lenght=0x10; *out=0xff91; break; //1111111110010000 case 0x36 : *lenght=0x10; *out=0xff92; break; //1111111110010001 case 0x37 : *lenght=0x10; *out=0xff93; break; //1111111110010010 case 0x38 : *lenght=0x10; *out=0xff94; break; //1111111110010011 case 0x39 : *lenght=0x10; *out=0xff95; break; //1111111110010100 case 0x3A : *lenght=0x10; *out=0xff96; break; //1111111110010101 case 0x41 : *lenght=0x06; *out=0x003a; break; //111011 case 0x42 : *lenght=0x09; *out=0x01f6; break; //1111111000 case 0x43 : *lenght=0x10; *out=0xff97; break; //1111111110010110 case 0x44 : *lenght=0x10; *out=0xff98; break; //1111111110010111 case 0x45 : *lenght=0x10; *out=0xff99; break; //1111111110011000 case 0x46 : *lenght=0x10; *out=0xff9a; break; //1111111110011001 case 0x47 : *lenght=0x10; *out=0xff9b; break; //1111111110011010 case 0x48 : *lenght=0x10; *out=0xff9c; break; //1111111110011011 case 0x49 : *lenght=0x10; *out=0xff9d; break; //1111111110011100 case 0x4A : *lenght=0x10; *out=0xff9e; break; //1111111110011101 case 0x51 : *lenght=0x06; *out=0x003b; break; //1111010 case 0x52 : *lenght=0x0a; *out=0x03f9; break; //11111110111 case 0x53 : *lenght=0x10; *out=0xff9f; break; //1111111110011110 case 0x54 : *lenght=0x10; *out=0xffa0; break; //1111111110011111 case 0x55 : *lenght=0x10; *out=0xffa1; break; //1111111110100000 case 0x56 : *lenght=0x10; *out=0xFFA2; break; //1111111110100001 case 0x57 : *lenght=0x10; *out=0xFFA3; break; //1111111110100010 case 0x58 : *lenght=0x10; *out=0xFFA4; break; //1111111110100011 case 0x59 : *lenght=0x10; *out=0xFFA5; break; //1111111110100100 case 0x5A : *lenght=0x10; *out=0xFFA6; break; //1111111110100101 case 0x61 : *lenght=0x07; *out=0x0079; break; //1111011 case 0x62 : *lenght=0x0b; *out=0x07f7; break; //111111110110 case 0x63 : *lenght=0x10; *out=0xffa7; break; //1111111110100110 case 0x64 : *lenght=0x10; *out=0xffa8; break; //1111111110100111 case 0x65 : *lenght=0x10; *out=0xffa9; break; //1111111110101000 case 0x66 : *lenght=0x10; *out=0xffaa; break; //1111111110101001 case 0x67 : *lenght=0x10; *out=0xffab; break; //1111111110101010 case 0x68 : *lenght=0x10; *out=0xFFAc; break; //1111111110101011 case 0x69 : *lenght=0x10; *out=0xFFAf; break; //1111111110101100 case 0x6A : *lenght=0x10; *out=0xFFAe; break; //1111111110101101 case 0x71 : *lenght=0x07; *out=0x007a; break; //11111010 case 0x72 : *lenght=0x0b; *out=0x07f8; break; //111111110111 case 0x73 : *lenght=0x10; *out=0xffaf; break; //1111111110101110 case 0x74 : *lenght=0x10; *out=0xffb0; break; //1111111110101111 case 0x75 : *lenght=0x10; *out=0xFFB1; break; //1111111110110000 case 0x76 : *lenght=0x10; *out=0xFFB2; break; //111111110110001 case 0x77 : *lenght=0x10; *out=0xFFB3; break; //111111110110010 case 0x78 : *lenght=0x10; *out=0xFFB4; break; //111111110110011 case 0x79 : *lenght=0x10; *out=0xFFB5; break; //1111111110110100 case 0x7A : *lenght=0x10; *out=0xFFB6; break; //1111111110110101 case 0x81 : *lenght=0x08; *out=0x00f9; break; //111111000 case 0x82 : *lenght=0x10; *out=0xffb7; break; //111111111000000 case 0x83 : *lenght=0x10; *out=0xFFB8; break; //1111111110110110 case 0x84 : *lenght=0x10; *out=0xFFB9; break; //1111111110110111 case 0x85 : *lenght=0x10; *out=0xFFBa; break; //1111111110111000 case 0x86 : *lenght=0x10; *out=0xFFBb; break; //1111111110111001 case 0x87 : *lenght=0x10; *out=0xFFBc; break; //1111111110111010 case 0x88 : *lenght=0x10; *out=0xFFBd; break; //1111111110111011 case 0x89 : *lenght=0x10; *out=0xFFBe; break; //1111111110111100 case 0x8A : *lenght=0x10; *out=0xFFBf; break; //1111111110111101 case 0x91 : *lenght=0x09; *out=0x01f7; break; //111111001 case 0x92 : *lenght=0x10; *out=0xffc0; break; //1111111110111110 case 0x93 : *lenght=0x10; *out=0xffc1; break; //1111111110111111 case 0x94 : *lenght=0x10; *out=0xFFC2; break; //1111111111000000 case 0x95 : *lenght=0x10; *out=0xFFC3; break; //1111111111000001 case 0x96 : *lenght=0x10; *out=0xFFC4; break; //1111111111000010 case 0x97 : *lenght=0x10; *out=0xFFC5; break; //1111111111000011 case 0x98 : *lenght=0x10; *out=0xFFC6; break; //1111111111000100 case 0x99 : *lenght=0x10; *out=0xFFC7; break; //1111111111000101 case 0x9A : *lenght=0x10; *out=0xFFC8; break; //1111111111000110 case 0xA1 : *lenght=0x09; *out=0x01f8; break; //111111010 case 0xA2 : *lenght=0x10; *out=0xffc9; break; //1111111111000111 case 0xA3 : *lenght=0x10; *out=0xFFCa; break; //1111111111001000 case 0xA4 : *lenght=0x10; *out=0xFFCb; break; //1111111111001001 case 0xA5 : *lenght=0x10; *out=0xFFCc; break; //1111111111001010 case 0xA6 : *lenght=0x10; *out=0xFFCd; break; //1111111111001011 case 0xA7 : *lenght=0x10; *out=0xFFCe; break; //1111111111001100 case 0xA8 : *lenght=0x10; *out=0xFFCf; break; //1111111111001101 case 0xA9 : *lenght=0x10; *out=0xFFd0; break; //1111111111001110 case 0xAA : *lenght=0x10; *out=0xFFd1; break; //1111111111001111 case 0xB1 : *lenght=0x09; *out=0x01f9; break; //1111111001 case 0xB2 : *lenght=0x10; *out=0xFFD2; break; //1111111111010000 case 0xB3 : *lenght=0x10; *out=0xFFD3; break; //1111111111010001 case 0xB4 : *lenght=0x10; *out=0xFFD4; break; //1111111111010010 case 0xB5 : *lenght=0x10; *out=0xFFD5; break; //1111111111010011 case 0xB6 : *lenght=0x10; *out=0xFFD6; break; //1111111111010100 case 0xB7 : *lenght=0x10; *out=0xFFD7; break; //1111111111010101 case 0xB8 : *lenght=0x10; *out=0xFFD8; break; //1111111111010110 case 0xB9 : *lenght=0x10; *out=0xFFD9; break; //1111111111010111 case 0xBA : *lenght=0x10; *out=0xFFDa; break; //1111111111011000 case 0xC1 : *lenght=0x09; *out=0x01fa; break; //1111111010 case 0xC2 : *lenght=0x10; *out=0xFFDb; break; //1111111111011001 case 0xC3 : *lenght=0x10; *out=0xFFDc; break; //1111111111011010 case 0xC4 : *lenght=0x10; *out=0xFFDd; break; //1111111111011011 case 0xC5 : *lenght=0x10; *out=0xFFDe; break; //1111111111011100 case 0xC6 : *lenght=0x10; *out=0xFFDf; break; //1111111111011101 case 0xC7 : *lenght=0x10; *out=0xFFe0; break; //1111111111011110 case 0xC8 : *lenght=0x10; *out=0xFFe1; break; //1111111111011111 case 0xC9 : *lenght=0x10; *out=0xFFe2; break; //1111111111100000 case 0xCA : *lenght=0x10; *out=0xFFe3; break; //1111111111100001 case 0xD1 : *lenght=0x0b; *out=0x07f9; break; //11111111000 case 0xD2 : *lenght=0x10; *out=0xFFE4; break; //1111111111100010 case 0xD3 : *lenght=0x10; *out=0xFFE5; break; //1111111111100011 case 0xD4 : *lenght=0x10; *out=0xFFE6; break; //1111111111100100 case 0xD5 : *lenght=0x10; *out=0xFFE7; break; //1111111111100101 case 0xD6 : *lenght=0x10; *out=0xFFE8; break; //1111111111100110 case 0xD7 : *lenght=0x10; *out=0xFFE9; break; //1111111111100111 case 0xD8 : *lenght=0x10; *out=0xFFEa; break; //1111111111101000 case 0xD9 : *lenght=0x10; *out=0xFFEb; break; //1111111111101001 case 0xDA : *lenght=0x10; *out=0xFFEc; break; //1111111111101010 case 0xE1 : *lenght=0x0e; *out=0x3fe0; break; //1111111111101011 case 0xE2 : *lenght=0x10; *out=0xffed; break; //1111111111101100 case 0xE3 : *lenght=0x10; *out=0xFFEe; break; //1111111111101101 case 0xE4 : *lenght=0x10; *out=0xFFEf; break; //1111111111101110 case 0xE5 : *lenght=0x10; *out=0xFFf0; break; //1111111111101111 case 0xE6 : *lenght=0x10; *out=0xFFF1; break; //1111111111110000 case 0xE7 : *lenght=0x10; *out=0xFFF2; break; //1111111111110001 case 0xE8 : *lenght=0x10; *out=0xFFF3; break; //1111111111110010 case 0xE9 : *lenght=0x10; *out=0xFFF4; break; //1111111111110011 case 0xEA : *lenght=0x10; *out=0xFFF5; break; //1111111111110100 case 0xF0 : *lenght=0x0a; *out=0x03fa; break; //11111111001 case 0xF1 : *lenght=0x0f; *out=0x7fc3; break; //1111111111110101 case 0xF2 : *lenght=0x10; *out=0xFFF6; break; //1111111111110110 case 0xF3 : *lenght=0x10; *out=0xFFF7; break; //1111111111110111 case 0xF4 : *lenght=0x10; *out=0xFFF8; break; //1111111111111000 case 0xF5 : *lenght=0x10; *out=0xFFF9; break; //1111111111111001 case 0xF6 : *lenght=0x10; *out=0xFFFA; break; //1111111111111010 case 0xF7 : *lenght=0x10; *out=0xFFFB; break; //1111111111111011 case 0xF8 : *lenght=0x10; *out=0xFFFC; break; //1111111111111100 case 0xF9 : *lenght=0x10; *out=0xFFFD; break; //1111111111111101 case 0xFA : *lenght=0x10; *out=0xFFFE; break; //1111111111111110 default : printf("WAARDE STAAT NIET IN TABEL!!!!!!!!!!!!!!!!!!!!\n");break; } // printf("magnitude= %x out= %x lenght= %d \n",magnitude,*out,*lenght); return; } //=========================================================================== void ConvertDCMagnitudeY(unsigned char magnitude,unsigned short int *out, unsigned short int *lenght) { switch (magnitude) { case 0x00 : *out=0x0000; *lenght=2; break; case 0x01 : *out=0x0002; *lenght=3; break; case 0x02 : *out=0x0003; *lenght=3; break; case 0x03 : *out=0x0004; *lenght=3; break; case 0x04 : *out=0x0005; *lenght=3; break; case 0x05 : *out=0x0006; *lenght=3; break; case 0x06 : *out=0x000e; *lenght=4; break; case 0x07 : *out=0x001e; *lenght=5; break; case 0x08 : *out=0x003e; *lenght=6; break; case 0x09 : *out=0x007e; *lenght=7; break; case 0x0a : *out=0x00fe; *lenght=8; break; case 0x0b : *out=0x01fe; *lenght=9; break; } } //=========================================================================== void ConvertACMagnitudeY(unsigned char magnitude,unsigned short int *out, unsigned short int *lenght) { switch (magnitude) { case 0x00 : *lenght=4; *out=0xFFFA; break; //1010 case 0x01 : *lenght=2; *out=0xFFF0; break; //00 case 0x02 : *lenght=2; *out=0xFFF1; break; //01 case 0x03 : *lenght=3; *out=0xFFF4; break; //100 case 0x04 : *lenght=4; *out=0xFFFB; break; //1011 case 0x05 : *lenght=5; *out=0xFFFA; break; //11010 case 0x06 : *lenght=7; *out=0xFFF8; break; //1111000 case 0x07 : *lenght=8; *out=0xFFF8; break; //11111000 case 0x08 : *lenght=10; *out=0xFFF6; break; //1111110110 case 0x09 : *lenght=16; *out=0xFF82; break; //1111111110000010 case 0x0A : *lenght=16; *out=0xFF83; break; //1111111110000011 case 0x11 : *lenght=4; *out=0xFFFC; break; //1100 case 0x12 : *lenght=5; *out=0xFFFB; break; //11011 case 0x13 : *lenght=7; *out=0xFFF9; break; //1111001 case 0x14 : *lenght=9; *out=0xFFF6; break; //111110110 case 0x15 : *lenght=11; *out=0xFFF6; break; //11111110110 case 0x16 : *lenght=16; *out=0xFF84; break; //1111111110000100 case 0x17 : *lenght=16; *out=0xFF85; break; //1111111110000101 case 0x18 : *lenght=16; *out=0xFF86; break; //1111111110000110 case 0x19 : *lenght=16; *out=0xFF87; break; //1111111110000111 case 0x1A : *lenght=16; *out=0xFF88; break; //1111111110001000 case 0x21 : *lenght=5; *out=0xFFFC; break; //11100 case 0x22 : *lenght=8; *out=0xFFF9; break; //11111001 case 0x23 : *lenght=10; *out=0xFFF7; break; //1111110111 case 0x24 : *lenght=12; *out=0xFFF4; break; //111111110100 case 0x25 : *lenght=16; *out=0xFF89; break; //1111111110001001 case 0x26 : *lenght=16; *out=0xFF8A; break; //1111111110001010 case 0x27 : *lenght=16; *out=0xFF8B; break; //1111111110001011 case 0x28 : *lenght=16; *out=0xFF8C; break; //1111111110001100 case 0x29 : *lenght=16; *out=0xFF8D; break; //1111111110001101 case 0x2A : *lenght=16; *out=0xFF8E; break; //1111111110001110 case 0x31 : *lenght=6; *out=0xFFFA; break; //111010 case 0x32 : *lenght=9; *out=0xFFF7; break; //111110111 case 0x33 : *lenght=12; *out=0xFFF5; break; //111111110101 case 0x34 : *lenght=16; *out=0xFF8F; break; //1111111110001111 case 0x35 : *lenght=16; *out=0xFF90; break; //1111111110010000 case 0x36 : *lenght=16; *out=0xFF91; break; //1111111110010001 case 0x37 : *lenght=16; *out=0xFF92; break; //1111111110010010 case 0x38 : *lenght=16; *out=0xFF93; break; //1111111110010011 case 0x39 : *lenght=16; *out=0xFF94; break; //1111111110010100 case 0x3A : *lenght=16; *out=0xFF95; break; //1111111110010101 case 0x41 : *lenght=6; *out=0xFFFB; break; //111011 case 0x42 : *lenght=10; *out=0xFFF8; break; //1111111000 case 0x43 : *lenght=16; *out=0xFF96; break; //1111111110010110 case 0x44 : *lenght=16; *out=0xFF97; break; //1111111110010111 case 0x45 : *lenght=16; *out=0xFF98; break; //1111111110011000 case 0x46 : *lenght=16; *out=0xFF99; break; //1111111110011001 case 0x47 : *lenght=16; *out=0xFF9A; break; //1111111110011010 case 0x48 : *lenght=16; *out=0xFF9B; break; //1111111110011011 case 0x49 : *lenght=16; *out=0xFF9C; break; //1111111110011100 case 0x4A : *lenght=16; *out=0xFF9D; break; //1111111110011101 case 0x51 : *lenght=7; *out=0xFFFA; break; //1111010 case 0x52 : *lenght=11; *out=0xFFF7; break; //11111110111 case 0x53 : *lenght=16; *out=0xFF9E; break; //1111111110011110 case 0x54 : *lenght=16; *out=0xFF9F; break; //1111111110011111 case 0x55 : *lenght=16; *out=0xFFA0; break; //1111111110100000 case 0x56 : *lenght=16; *out=0xFFA1; break; //1111111110100001 case 0x57 : *lenght=16; *out=0xFFA2; break; //1111111110100010 case 0x58 : *lenght=16; *out=0xFFA3; break; //1111111110100011 case 0x59 : *lenght=16; *out=0xFFA4; break; //1111111110100100 case 0x5A : *lenght=16; *out=0xFFA5; break; //1111111110100101 case 0x61 : *lenght=7; *out=0xFFFB; break; //1111011 case 0x62 : *lenght=12; *out=0xFFF6; break; //111111110110 case 0x63 : *lenght=16; *out=0xFFA6; break; //1111111110100110 case 0x64 : *lenght=16; *out=0xFFA7; break; //1111111110100111 case 0x65 : *lenght=16; *out=0xFFA8; break; //1111111110101000 case 0x66 : *lenght=16; *out=0xFFA9; break; //1111111110101001 case 0x67 : *lenght=16; *out=0xFFAA; break; //1111111110101010 case 0x68 : *lenght=16; *out=0xFFAB; break; //1111111110101011 case 0x69 : *lenght=16; *out=0xFFAC; break; //1111111110101100 case 0x6A : *lenght=16; *out=0xFFAD; break; //1111111110101101 case 0x71 : *lenght=8; *out=0xFFFA; break; //11111010 case 0x72 : *lenght=12; *out=0xFFF7; break; //111111110111 case 0x73 : *lenght=16; *out=0xFFAE; break; //1111111110101110 case 0x74 : *lenght=16; *out=0xFFAF; break; //1111111110101111 case 0x75 : *lenght=16; *out=0xFFB0; break; //1111111110110000 case 0x76 : *lenght=16; *out=0xFFB1; break; //111111110110001 case 0x77 : *lenght=16; *out=0xFFB2; break; //111111110110010 case 0x78 : *lenght=16; *out=0xFFB3; break; //111111110110011 case 0x79 : *lenght=16; *out=0xFFB4; break; //1111111110110100 case 0x7A : *lenght=16; *out=0xFFB5; break; //1111111110110101 case 0x81 : *lenght=9; *out=0xFFF8; break; //111111000 case 0x82 : *lenght=15; *out=0xFFC0; break; //111111111000000 case 0x83 : *lenght=16; *out=0xFFB6; break; //1111111110110110 case 0x84 : *lenght=16; *out=0xFFB7; break; //1111111110110111 case 0x85 : *lenght=16; *out=0xFFB8; break; //1111111110111000 case 0x86 : *lenght=16; *out=0xFFB9; break; //1111111110111001 case 0x87 : *lenght=16; *out=0xFFBA; break; //1111111110111010 case 0x88 : *lenght=16; *out=0xFFBB; break; //1111111110111011 case 0x89 : *lenght=16; *out=0xFFBC; break; //1111111110111100 case 0x8A : *lenght=16; *out=0xFFBD; break; //1111111110111101 case 0x91 : *lenght=9; *out=0xFFF9; break; //111111001 case 0x92 : *lenght=16; *out=0xFFBE; break; //1111111110111110 case 0x93 : *lenght=16; *out=0xFFBF; break; //1111111110111111 case 0x94 : *lenght=16; *out=0xFFC0; break; //1111111111000000 case 0x95 : *lenght=16; *out=0xFFC1; break; //1111111111000001 case 0x96 : *lenght=16; *out=0xFFC2; break; //1111111111000010 case 0x97 : *lenght=16; *out=0xFFC3; break; //1111111111000011 case 0x98 : *lenght=16; *out=0xFFC4; break; //1111111111000100 case 0x99 : *lenght=16; *out=0xFFC5; break; //1111111111000101 case 0x9A : *lenght=16; *out=0xFFC6; break; //1111111111000110 case 0xA1 : *lenght=9; *out=0xFFFA; break; //111111010 case 0xA2 : *lenght=16; *out=0xFFC7; break; //1111111111000111 case 0xA3 : *lenght=16; *out=0xFFC8; break; //1111111111001000 case 0xA4 : *lenght=16; *out=0xFFC9; break; //1111111111001001 case 0xA5 : *lenght=16; *out=0xFFCA; break; //1111111111001010 case 0xA6 : *lenght=16; *out=0xFFCB; break; //1111111111001011 case 0xA7 : *lenght=16; *out=0xFFCC; break; //1111111111001100 case 0xA8 : *lenght=16; *out=0xFFCD; break; //1111111111001101 case 0xA9 : *lenght=16; *out=0xFFCE; break; //1111111111001110 case 0xAA : *lenght=16; *out=0xFFCF; break; //1111111111001111 case 0xB1 : *lenght=10; *out=0xFFF9; break; //1111111001 case 0xB2 : *lenght=16; *out=0xFFD0; break; //1111111111010000 case 0xB3 : *lenght=16; *out=0xFFD1; break; //1111111111010001 case 0xB4 : *lenght=16; *out=0xFFD2; break; //1111111111010010 case 0xB5 : *lenght=16; *out=0xFFD3; break; //1111111111010011 case 0xB6 : *lenght=16; *out=0xFFD4; break; //1111111111010100 case 0xB7 : *lenght=16; *out=0xFFD5; break; //1111111111010101 case 0xB8 : *lenght=16; *out=0xFFD6; break; //1111111111010110 case 0xB9 : *lenght=16; *out=0xFFD7; break; //1111111111010111 case 0xBA : *lenght=16; *out=0xFFD8; break; //1111111111011000 case 0xC1 : *lenght=10; *out=0xFFFA; break; //1111111010 case 0xC2 : *lenght=16; *out=0xFFD9; break; //1111111111011001 case 0xC3 : *lenght=16; *out=0xFFDA; break; //1111111111011010 case 0xC4 : *lenght=16; *out=0xFFDB; break; //1111111111011011 case 0xC5 : *lenght=16; *out=0xFFDC; break; //1111111111011100 case 0xC6 : *lenght=16; *out=0xFFDD; break; //1111111111011101 case 0xC7 : *lenght=16; *out=0xFFDE; break; //1111111111011110 case 0xC8 : *lenght=16; *out=0xFFDF; break; //1111111111011111 case 0xC9 : *lenght=16; *out=0xFFE0; break; //1111111111100000 case 0xCA : *lenght=16; *out=0xFFE1; break; //1111111111100001 case 0xD1 : *lenght=11; *out=0xFFF8; break; //11111111000 case 0xD2 : *lenght=16; *out=0xFFE2; break; //1111111111100010 case 0xD3 : *lenght=16; *out=0xFFE3; break; //1111111111100011 case 0xD4 : *lenght=16; *out=0xFFE4; break; //1111111111100100 case 0xD5 : *lenght=16; *out=0xFFE5; break; //1111111111100101 case 0xD6 : *lenght=16; *out=0xFFE6; break; //1111111111100110 case 0xD7 : *lenght=16; *out=0xFFE7; break; //1111111111100111 case 0xD8 : *lenght=16; *out=0xFFE8; break; //1111111111101000 case 0xD9 : *lenght=16; *out=0xFFE9; break; //1111111111101001 case 0xDA : *lenght=16; *out=0xFFEA; break; //1111111111101010 case 0xE1 : *lenght=16; *out=0xFFEB; break; //1111111111101011 case 0xE2 : *lenght=16; *out=0xFFEC; break; //1111111111101100 case 0xE3 : *lenght=16; *out=0xFFED; break; //1111111111101101 case 0xE4 : *lenght=16; *out=0xFFEE; break; //1111111111101110 case 0xE5 : *lenght=16; *out=0xFFEF; break; //1111111111101111 case 0xE6 : *lenght=16; *out=0xFFF0; break; //1111111111110000 case 0xE7 : *lenght=16; *out=0xFFF1; break; //1111111111110001 case 0xE8 : *lenght=16; *out=0xFFF2; break; //1111111111110010 case 0xE9 : *lenght=16; *out=0xFFF3; break; //1111111111110011 case 0xEA : *lenght=16; *out=0xFFF4; break; //1111111111110100 case 0xF0 : *lenght=11; *out=0xFFF9; break; //11111111001 case 0xF1 : *lenght=16; *out=0xFFF5; break; //1111111111110101 case 0xF2 : *lenght=16; *out=0xFFF6; break; //1111111111110110 case 0xF3 : *lenght=16; *out=0xFFF7; break; //1111111111110111 case 0xF4 : *lenght=16; *out=0xFFF8; break; //1111111111111000 case 0xF5 : *lenght=16; *out=0xFFF9; break; //1111111111111001 case 0xF6 : *lenght=16; *out=0xFFFA; break; //1111111111111010 case 0xF7 : *lenght=16; *out=0xFFFB; break; //1111111111111011 case 0xF8 : *lenght=16; *out=0xFFFC; break; //1111111111111100 case 0xF9 : *lenght=16; *out=0xFFFD; break; //1111111111111101 case 0xFA : *lenght=16; *out=0xFFFE; break; //1111111111111110 default : printf("WAARDE STAAT NIET IN TABEL!!!!!!!!!!!!!!!!!!!!\n");break; } // printf("magnitude= %x out= %x lenght= %d \n",magnitude,*out,*lenght); return; } //=========================================================================== char Extend (char additional, unsigned char magnitude) { int vt= 1 << (magnitude-1); if ( additional < vt ) return (additional + (-1 << magnitude) + 1); else return additional; } //=========================================================================== void ReverseExtend (char value, unsigned char *magnitude, unsigned char *bits) { // printf("reverseextend value= %d\n",*magnitude); if (value >=0) { *bits=value; } else { value=-value; *bits=~value; } *magnitude=0; while (value !=0) { value>>=1; ++*magnitude; } // printf("reverseextend magnitude= %d bits= %d",magnitude,bits); return; } //=========================================================================== void WriteRawBits16(unsigned char amount_bits, unsigned int bits, unsigned int *remaining,unsigned char *amount_remaining, FILE* file) //*remaining needs bo be more than 8 bits because 8 bits could be added and ther ecould already be up ot 7 bits in *remaining // this function collects bits to send // if there less than 16 bits collected, nothing is send and these bits are stored in *remaining. In *amount_remaining there is stated how much bits are stored in *remaining // if more than 16 bits are collected, 16 bits are send and the remaining bits are stored again { unsigned short int send; unsigned int mask; unsigned char send2; int count; mask=0x00; //init mask *remaining=(*remaining<<amount_bits); //shift to make place for the new bits for (count=amount_bits; count>0; count--) mask=(mask<<1)|0x01; //create mask for adding bit *remaining=*remaining | (bits&mask); //add bits *amount_remaining=*amount_remaining + amount_bits; //change *amount_remaining to the correct new value if (*amount_remaining >= 16) //are there more than 16 bits in buffer, send 16 bits { if (*amount_remaining >= 32 ) printf("ERROR, more bits to send %d",*amount_remaining); send=*remaining>>(*amount_remaining-16); //this value can be send/stored (in art this can be dony by selecting bits) send2=(send & 0xFF00) >>8; fwrite(&send2,1,1,file); if (send2==0xFF) { send2=0x00; fwrite(&send2,1,1,file); } send2=send & 0xFF; fwrite(&send2,1,1,file); if (send2==0xFF) { send2=0x00; fwrite(&send2,1,1,file); } *amount_remaining=*amount_remaining-16; //descrease by 16 because these are send } return; } //=========================================================================== void HuffmanEncodeFinishSend(unsigned int *remaining,unsigned char *amount_remaining, FILE* file) // There are still some bits left to send at the end of the 8x8 matrix (or maybe the file), // the remaining bits are filled up with ones and send // possible fault: -must it be filled up with ones? { unsigned short int send; unsigned int mask; int count; mask=0x00; //init mask if (*amount_remaining >= 8) //2 bytes to send, send first byte { send=*remaining>>(*amount_remaining-8); //shift so that first byte is ready to send fwrite(&send,1,1,file); if (send==0xFF) //is this still needed???? { send=0x00; fwrite(&send,1,1,file); } *amount_remaining=*amount_remaining -8; // lower the value to the amount of bits that still needs to be send } if (*amount_remaining >= 0) //there is a last byte to send { send=*remaining<<(8-*amount_remaining); //shift the last bits to send to the front of the byte mask=0x00; //init mask for (count=(8-*amount_remaining); count>0; count--) mask=(mask<<1)|0x01; //create mask to fill byte up with ones send=send | mask; //add the ones to the byte fwrite(&send,1,1,file); *amount_remaining=0x00; //is this needed? } return; } //=========================================================================== void HuffmanEncodeUsingDCTable(unsigned char magnitude,unsigned int *remaining,unsigned char *amount_remaining, FILE* file) // Translate magnitude into needed data (from table) and send it { unsigned char send; unsigned short int huffmancode, huffmanlengt; ConvertDCMagnitudeY(magnitude, &huffmancode, &huffmanlengt); WriteRawBits16(huffmanlengt,huffmancode,remaining,amount_remaining, file); //printf("Write DC magnitude= %2x \n",magnitude); //WriteRawBits16(0x08,magnitude,remaining,amount_remaining, file); return; } //=========================================================================== void HuffmanEncodeUsingACTable(unsigned char mag,unsigned int *remaining,unsigned char *amount_remaining, FILE* file) // Translate magnitude into needed data (from table) and send it { unsigned char send; unsigned short int huffmancode, huffmanlengt; ConvertACMagnitudeY(mag, &huffmancode, &huffmanlengt); WriteRawBits16(huffmanlengt,huffmancode,remaining,amount_remaining, file); return; } //=========================================================================== char EncodeDataUnit(char dataunit[64], char last_dc_value, FILE* file, unsigned int *remaining, unsigned char *amount_remaining, unsigned int color) { char difference; unsigned char magnitude,zerorun,ii,ert; unsigned int bits; //init // PrintMatrix(dataunit) ; difference = dataunit[0] - last_dc_value; last_dc_value=dataunit[0]; ReverseExtend(difference, &magnitude,&bits); HuffmanEncodeUsingDCTable(magnitude,remaining,amount_remaining, file); WriteRawBits16(magnitude,bits,remaining,amount_remaining, file); zerorun=0; ii=1; while ( ii < 64 ) { if (dataunit[ii] != 0 ) { while ( zerorun >= 16 ) { HuffmanEncodeUsingACTable(0xF0,remaining,amount_remaining,file); zerorun=zerorun-16; // printf("16 zeros: %d\n",zerorun); } ReverseExtend(dataunit[ii],&magnitude,&bits); ert= ((int)zerorun *16); //ERROR !!!!!!!!!!! ert=ert + magnitude; HuffmanEncodeUsingACTable(ert,remaining,amount_remaining,file); WriteRawBits16(magnitude,bits,remaining,amount_remaining, file); zerorun=0; } else zerorun=zerorun+1; ii++; } if ( zerorun != 0 ) { HuffmanEncodeUsingACTable(0x00,remaining,amount_remaining,file); // printf("NUL DE REST IS NUL\n"); } // HuffmanEncodeFinishSend(remaining,amount_remaining,file); return last_dc_value; } //=========================================================================== void DecodeDataUnit(char *coefficients[64], char last_dc_value, char value) { char ii; char lowbits,highbits,extrabits; //decode DC //decode AC //set coefficients to 0 for (ii=0;ii<64;ii++) *coefficients[ii]=0x00; //for the next optimu\ization step: don't write 0 before beginning, these value are overwritten. Only write 0 is you know tha value is 0, now you only write each value once, not twice is the value ain't 0. while (ii<64) { // value= DecodeUsingACTable(); lowbits = value && 0x0F; highbits = (value && 0xF0 ) >>4; if (lowbits != 0x00) { // extrabits = ReadRawBits(lowbits); ii=ii+highbits; *coefficients[ii]=Extend(extrabits,lowbits); ii++; } else { if (highbits==0xF) ii=ii+16; //run of 16 zeros else if (highbits == 0x0) ii=64; //the rest are zeros } } } //=========================================================================== 1.1 mb-jpeg/encoder/huffman.h http://www.opencores.org/cvsweb.shtml/mb-jpeg/encoder/huffman.h?rev=1.1&content-type=text/x-cvsweb-markup Index: huffman.h =================================================================== #ifndef _HUFFMAN_H #define _HUFFMAN_H 1 char EncodeDataUnit(char dataunit[NUMBER_OF_PIXELS], char last_dc_value, FILE* file, unsigned int *remaining, unsigned char *amount_remaining, unsigned int component); void HuffmanEncodeFinishSend(unsigned int *remaining,unsigned char *amount_remaining, FILE* file); #else #error "ERROR file huffman.h multiple times included" #endif /* --- _HUFFMAN_H --- */ 1.1 mb-jpeg/encoder/io.c http://www.opencores.org/cvsweb.shtml/mb-jpeg/encoder/io.c?rev=1.1&content-type=text/x-cvsweb-markup Index: io.c =================================================================== //--------------------------------------------------------------------------- #include <stdio.h> #include "io.h" #pragma hdrstop //--------------------------------------------------------------------------- #pragma argsused JPEGHEADER _jpegheader; unsigned char qtable[64] = {16, 8, 8, 16, 12, 8, 16, 16, 16, 16, 16, 16, 16, 16, 16, 32, 32, 16, 16, 16, 16, 32, 32, 32, 32, 32, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 128, 64, 64, 128, 128, 128, 128, 128, 64, 64, 128, 128, 128, 128, 128, 64, 128, 128, 128}; unsigned char huffmancount[4][16] = {{0x00,0x01,0x05,0x01,0x01,0x01,0x01,0x01,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, //standard DC table count {0x00,0x02,0x01,0x03,0x03,0x02,0x04,0x03,0x05,0x05,0x04,0x04,0x00,0x00,0x01,0x7D}, //standard AC table count {0x00,0x01,0x05,0x01,0x01,0x01,0x01,0x01,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, //standard DC table count {0x00,0x02,0x01,0x03,0x03,0x02,0x04,0x03,0x05,0x05,0x04,0x04,0x00,0x00,0x01,0x7D}}; //standard AC table count unsigned char huffDCvalues[12] ={0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b};// {0x00, 0x02, 0x03, 0x04, 0x05, 0x06, 0x0E, 0x0E, 0x0E, 0x0E, 0x0E, 0x0E}; unsigned char huffACvalues[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}; //old huffman table, and propably a incorrect one. /*{0x00, 0x01, 0x04, 0x0A, 0x0B, 0x0C, 0x1A, 0x1B, 0x1C, 0x3A, 0x3B, 0x78, 0x79, 0x7A, 0x7B, 0xF8, 0xF9, 0xFA, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xF6, 0xF7, 0xF8, 0xF9, 0xF4, 0xF5, 0xF6, 0xF7, 0xC0, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE};*/ int getbmpheader(FILE * file, INFOHEADER *header) { int retval; unsigned char buffer[4]; // printf("\n %d", sizeof(JPEGHEADER)); fseek(file,14,SEEK_SET); fread(header, sizeof(INFOHEADER), 1, file); return retval; } /* int getjpegheader(FILE * file, JPEGHEADER *header) { unsigned int retval; return retval; } void writebmpheader(FILE * file, BMPHEADER *header) { //write header //fill file with 0's fwrite(0, 1, header->info.width*header->info.height, file); } */ void writejpegheader(FILE * file, INFOHEADER *header) { JPEGHEADER *jpegheader; unsigned int headersize, huffmantablesize, previoussize; unsigned char QTcount, i, j, components, id, huffmantablecount; unsigned short length, headerlength; //Number of Quatization Tables QTcount = 2; headerlength = 12; //12 bytes are needed for the markers huffmantablecount = 4; //2 AC and 2 DC tables huffmantablesize = 0; jpegheader = &_jpegheader;//(JPEGHEADER *)malloc(550); jpegheader->SOIMarker[0] = 0xff; jpegheader->SOIMarker[1] = 0xd8; //APP0 segment jpegheader->app0.APP0Marker[0] = 0xff; jpegheader->app0.APP0Marker[1] = 0xe0; headerlength += 16; //APP0 marker is always 16 bytes long jpegheader->app0.Length[0] = 0x00; jpegheader->app0.Length[1] = 0x10; jpegheader->app0.Identifier[0] = 0x4a; jpegheader->app0.Identifier[1] = 0x46; jpegheader->app0.Identifier[2] = 0x49; jpegheader->app0.Identifier[3] = 0x46; jpegheader->app0.Identifier[4] = 0x00; jpegheader->app0.Version[0] = 0x01; jpegheader->app0.Version[1] = 0x00; jpegheader->app0.Units = 0x00; jpegheader->app0.XDensity[0] = 0x00; jpegheader->app0.XDensity[1] = 0x01; jpegheader->app0.YDensity[0] = 0x00; jpegheader->app0.YDensity[1] = 0x01; jpegheader->app0.ThumbWidth = 0x00; jpegheader->app0.ThumbHeight = 0x00; //Quantization Table Segment jpegheader->qt.QTMarker[0] = 0xff; jpegheader->qt.QTMarker[1] = 0xdb; length = (QTcount<<6) + QTcount + 2; headerlength += length; jpegheader->qt.Length[0] = (length & 0xff00)>>8; jpegheader->qt.Length[1] = length & 0xff; // jpegheader->qt.QTInfo = 0x00; // index = 0, precision = 0 //write Quantization table to header i = 0; /* jpegheader->qt.QTInfo[0] = 0; for(i=0;i<64;i++) { jpegheader->qt.QTInfo[i+1] = qtable[i]; } jpegheader->qt.QTInfo[65] = 1; for(i=0;i<64;i++) { jpegheader->qt.QTInfo[i+66] = qtable[i]; } */ for (id=0; id<QTcount; id++) { jpegheader->qt.QTInfo[(id<<6)+id] = id; for(i=0;i<64;i++) { jpegheader->qt.QTInfo[i+1+id+(id<<6)] = qtable[i]; } } //Start of Frame segment jpegheader->sof0.SOF0Marker[0] = 0xff; jpegheader->sof0.SOF0Marker[1] = 0xc0; if(header->bits == 8) { components = 0x01; } else { components = 0x03; } length = 8 + 3*components; headerlength += length; jpegheader->sof0.Length[0] = (length & 0xff00) >> 8; jpegheader->sof0.Length[1] = length & 0xff; jpegheader->sof0.DataPrecision = 0x08; jpegheader->sof0.ImageHeight[0] = (header->height & 0xff00) >> 8; jpegheader->sof0.ImageHeight[1] = header->height & 0xff; jpegheader->sof0.ImageWidth[0] = (header->width & 0xff00) >> 8; jpegheader->sof0.ImageWidth[1] = header->width & 0xff; jpegheader->sof0.Components = components; for (i=0; i < components; i++) { jpegheader->sof0.ComponentInfo[i][0] = i+1; //color component jpegheader->sof0.ComponentInfo[i][1] = 0x11; //no sampling has been done jpegheader->sof0.ComponentInfo[i][2] = (i==0)? 0x00 : 0x01; //quantization table ID } //Start of Huffman Table Segment jpegheader->ht.HTMarker[0] = 0xff; jpegheader->ht.HTMarker[1] = 0xc4; //Set dummy HT segment length length = 0;//tablecount*17; jpegheader->ht.Length[0] = (length & 0xff00) >> 8; jpegheader->ht.Length[1] = length & 0xff; previoussize = 0; for (id=0; id < huffmantablecount; id++) { huffmantablesize = 0; switch (id) { case 0 : jpegheader->ht.HuffmanInfo[previoussize] = 0x00; break; case 1 : jpegheader->ht.HuffmanInfo[previoussize] = 0x10; break; case 2 : jpegheader->ht.HuffmanInfo[previoussize] = 0x01; break; case 3 : jpegheader->ht.HuffmanInfo[previoussize] = 0x11; break; } for (i=1; i <= 16; i++) { jpegheader->ht.HuffmanInfo[i+previoussize] = huffmancount[id][i-1]; huffmantablesize += huffmancount[id][i-1]; } for (i=0; i < huffmantablesize; i++) { jpegheader->ht.HuffmanInfo[i+previoussize+17] = (id%2 == 1)? huffACvalues[i] : huffDCvalues[i]; } previoussize += huffmantablesize + 17; } //Set real HT segment length length = 2+previoussize; headerlength += length; jpegheader->ht.Length[0] = (length & 0xff00) >> 8; jpegheader->ht.Length[1] = length & 0xff; //Reset marker segment /* jpegheader->dri.DRIMarker[0] = 0xff; jpegheader->dri.DRIMarker[1] = 0xdd; jpegheader->dri.Length[0] = 0x00; jpegheader->dri.Length[1] = 0x04; jpegheader->dri.RestartInteral[0] = 0x00; //no restart markers jpegheader->dri.RestartInteral[1] = 0x00; //no restart markers headerlength += 6; //length of DRI segment */ //Start of Scan Header Segment jpegheader->sos.SOSMarker[0] = 0xff; jpegheader->sos.SOSMarker[1] = 0xda; length = 6 + (components<<1); headerlength += length; jpegheader->sos.Length[0] = (length & 0xff00) >> 8; jpegheader->sos.Length[1] = length & 0xff; jpegheader->sos.ComponentCount = components; //number of color components in the image jpegheader->sos.Component[0][0] = 0x01; //Y component jpegheader->sos.Component[0][1] = 0x00; //indexes of huffman tables for Y-component if (components == 0x03) { jpegheader->sos.Component[1][0] = 0x02; //the CB component jpegheader->sos.Component[1][1] = 0x11; //indexes of huffman tables for CB-component jpegheader->sos.Component[2][0] = 0x03; //The CR component jpegheader->sos.Component[2][1] = 0x11; //indexes of huffman tables for CR-component } //following bytes are ignored since progressive scan is not to be implemented jpegheader->sos.Ignore[0] = 0x00; jpegheader->sos.Ignore[1] = 0x3f; jpegheader->sos.Ignore[2] = 0x00; fwrite(jpegheader,headerlength,1,file); // free(jpegheader); } void writejpegfooter(FILE * file) { unsigned char footer[2]; footer[0] = 0xff; footer[1] = 0xd9; fseek(file,0,SEEK_END); fwrite(footer,sizeof(footer),1,file); } void readbmpfile(FILE * file, signed char pixelmatrix[MATRIX_SIZE][MATRIX_SIZE*3], unsigned int mrow, unsigned int mcol, INFOHEADER * header) { unsigned int row, col; unsigned char buffer[MATRIX_SIZE*3]; for(row = 0;row < MATRIX_SIZE; row++) { //Find first point of row in the matrix to be read. fseek(file,-(3*header->width*(row + 1 + mrow*MATRIX_SIZE)-(MATRIX_SIZE*3)*mcol),SEEK_END); //Read row from matrix fread(buffer, 1, MATRIX_SIZE*3, file); //copy row into pixelmatrix for(col = 0; col < MATRIX_SIZE*3; col++) { pixelmatrix[row][col] = buffer[col]- 128; } } } /*USED VALUES OF ROY's CODE THIS MIGHT LEAD TO PROBLEMS*/ signed char RGB2Y (int r, int g, int b) { return ((66*r + 129*g + 25*b + 128)>>8)+128; } /*USED VALUES OF ROY's CODE THIS MIGHT LEAD TO PROBLEMS*/ signed char RGB2Cr (int r, int g, int b) { return ((-38*r - 74*g + 112*b + 128)>>8)+128; } /*USED VALUES OF ROY's CODE THIS MIGHT LEAD TO PROBLEMS*/ signed char RGB2Cb (int r, int g, int b) { return ((112*r - 94*g - 18*b + 128)>>8)+128; } void RGB2YCrCb(signed char pixelmatrix[MATRIX_SIZE][MATRIX_SIZE*3],signed char YMatrix[MATRIX_SIZE][MATRIX_SIZE],signed char CrMatrix[MATRIX_SIZE][MATRIX_SIZE],signed char CbMatrix[MATRIX_SIZE][MATRIX_SIZE]) { unsigned int row, col; for(row = 0;row < MATRIX_SIZE; row++) { for(col = 0; col < MATRIX_SIZE; col++) { YMatrix[row][col] = RGB2Y(pixelmatrix[row][col*3+2],pixelmatrix[row][col*3+1],pixelmatrix[row][col*3]) - 128; CrMatrix[row][col] = RGB2Cr(pixelmatrix[row][col*3+2],pixelmatrix[row][col*3+1],pixelmatrix[row][col*3]) - 128; CbMatrix[row][col] = RGB2Cb(pixelmatrix[row][col*3+2],pixelmatrix[row][col*3+1],pixelmatrix[row][col*3]) - 128; } } } /* void readjpegfile(FILE * file, unsigned char bitstream[]) { } void writebmpfile(FILE * file, unsigned char pixelmatrix[MATRIX_SIZE][MATRIX_SIZE], unsigned int mrow, unsigned int mcol, unsigned int width) { unsigned int row; for(row = 0;row < MATRIX_SIZE; row++) { //Find first point of row in the matrix to be read. fseek(file,-(width*(row + 1 + mrow*MATRIX_SIZE)-(MATRIX_SIZE*mcol)),SEEK_END); //Read row from matrix fwrite(pixelmatrix[row], 1, MATRIX_SIZE, file); } } void writejpegfile(FILE * file, unsigned char bitstream[]) { } */ 1.1 mb-jpeg/encoder/io.h http://www.opencores.org/cvsweb.shtml/mb-jpeg/encoder/io.h?rev=1.1&content-type=text/x-cvsweb-markup Index: io.h =================================================================== #ifndef _IO_H #define _IO_H 1 #define MATRIX_SIZE 8 typedef struct { unsigned int size; /* Header size in bytes */ int width,height; /* Width and height of image */ unsigned short int planes; /* Number of colour planes */ unsigned short int bits; /* Bits per pixel */ unsigned int compression; /* Compression type */ unsigned int imagesize; /* Image size in bytes */ int xresolution,yresolution; /* Pixels per meter */ unsigned int ncolours; /* Number of colours */ unsigned int importantcolours; /* Important colours */ unsigned char palette[1024]; /* Storage for palette */ } INFOHEADER; typedef struct { int restofheader; //TODO INFOHEADER info; /* Information header */ } BMPHEADER; typedef struct { unsigned int row; /* Width and height of image */ unsigned int col; /* Width and height of image */ } BLOCKINFO; typedef struct { unsigned char QTMarker[2]; unsigned char Length[2]; unsigned char QTInfo[130]; //bit 0..3: number of QT (0..3, otherwise error) // bit 4..7: precision of QT, 0 = 8 bit, otherwise 16 bit // unsigned char ValuesQT[]; //max 192 values. 64*(precision+1) bytes } QTINFO; typedef struct { unsigned char HTMarker[2]; unsigned char Length[2]; unsigned char HuffmanInfo[416]; //Array containing ALL huffman information //For each color component holds: //First byte is used as info byte, followed by 16 bytes with values used //for counting the different huffman codes, finally the corresponding //huffman codes will follow. This sequence can repeat it self for //different Huffman tables, both DC or AC tables. //The structure of the information byte is as follows: //bit 0..3 : number of HT (0..3, otherwise error) //bit 4 : type of HT, 0 = DC table, 1 = AC table //bit 5..7 : not used, must be 0 (Used for progressive scan JPEG) } HTINFO; typedef struct { unsigned char APP0Marker[2]; unsigned char Length[2]; unsigned char Identifier[5]; unsigned char Version[2]; unsigned char Units; unsigned char XDensity[2]; unsigned char YDensity[2]; unsigned char ThumbWidth; unsigned char ThumbHeight; } APP0INFO; typedef struct { unsigned char SOF0Marker[2]; unsigned char Length[2]; unsigned char DataPrecision; //This is in bits/sample, usually 8 (12 and 16 not supported by most software). unsigned char ImageHeight[2]; unsigned char ImageWidth[2]; unsigned char Components; //Usually 1 = grey scaled, 3 = color YcbCr or YIQ 4 = color CMYK unsigned char ComponentInfo[3][3]; //Read each component data of 3 bytes. It contains, //(component Id(1byte)(1 = Y, 2 = Cb, 3 = Cr, 4 = I, 5 = Q), //sampling factors (1byte) (bit 0-3 vertical., 4-7 horizontal.), //quantization table number (1 byte)). } SOF0INFO; typedef struct { unsigned char SOSMarker[2]; unsigned char Length[2]; //This must be equal to 6+2*(number of components in scan). unsigned char ComponentCount; //This must be >= 1 and <=4 (otherwise error), usually 1 or 3 unsigned char Component[3][2]; // For each component, read 2 bytes. It contains, //1 byte Component Id (1=Y, 2=Cb, 3=Cr, 4=I, 5=Q), //1 byte Huffman table to use : //bit 0..3 : AC table (0..3) //bit 4..7 : DC table (0..3) unsigned char Ignore[3]; //We have to skip 3 bytes } SOSINFO; typedef struct { unsigned char DRIMarker[2]; unsigned char Length[2]; unsigned char RestartInteral[2]; // Interval of the restart markers } DRIINFO; typedef struct { unsigned char SOIMarker[2]; //Start of image marker APP0INFO app0; QTINFO qt; SOF0INFO sof0; HTINFO ht; // DRIINFO dri; SOSINFO sos; } JPEGHEADER; /* * Read BMP header and return it in header, for now only the width and height * are returned, since the other values are of no use. */ int getbmpheader(FILE * file, INFOHEADER *header); int getjpegheader(FILE * file, JPEGHEADER *header); void writebmpheader(FILE * file, BMPHEADER *header); void writejpegheader(FILE * file, INFOHEADER *header); void writejpegfooter(FILE * file); /* * Read BMP to retrieve 8*8 block starting at horizontal position mcol*8, and * vertical position mrow*8 in the image. This block is returned in pixelmatrix. * */ void readbmpfile(FILE * file, signed char pixelmatrix[MATRIX_SIZE][MATRIX_SIZE*3], unsigned int mrow, unsigned int mcol, INFOHEADER * header); void RGB2YCrCb(signed char pixelmatrix[MATRIX_SIZE][MATRIX_SIZE*3],signed char YMatrix[MATRIX_SIZE][MATRIX_SIZE],signed char CrMatrix[MATRIX_SIZE][MATRIX_SIZE],signed char CbMatrix[MATRIX_SIZE][MATRIX_SIZE]); void readjpegfile(FILE * file, unsigned char bitstream[]); void writebmpfile(FILE * file, unsigned char pixelmatrix[MATRIX_SIZE][MATRIX_SIZE], unsigned int mrow, unsigned int mcol, unsigned int width); void writejpegfile(FILE * file, unsigned char bitstream[]); #else #error "ERROR file io.h multiple times included" #endif /* --- _IO_H --- */ 1.1 mb-jpeg/encoder/main.c http://www.opencores.org/cvsweb.shtml/mb-jpeg/encoder/main.c?rev=1.1&content-type=text/x-cvsweb-markup Index: main.c =================================================================== //--------------------------------------------------------------------------- typedef union { /* block of pixel-space values */ unsigned char block[8][8]; unsigned char linear[64]; } PBlock; typedef union { /* block of frequency-space values */ int block[8][8]; int linear[64]; } FBlock; #include <stdio.h> #include <stdlib.h> #include <windows.h> #include "zzq.h" #include "io.h" #include "huffman.h" #include "dct.h" #pragma hdrstop //--------------------------------------------------------------------------- INFOHEADER _bmpheader; #pragma argsused int main(int argc, char* argv[]) { int encode, compression,i; signed char pixelmatrix[MATRIX_SIZE][MATRIX_SIZE*3],YMatrix[MATRIX_SIZE][MATRIX_SIZE],CrMatrix[MATRIX_SIZE][MATRIX_SIZE],CbMatrix[MATRIX_SIZE][MATRIX_SIZE]; /*= {{124, 105, 139, 95, 143, 98, 132, 114}, {105, 157, 61, 187, 51, 176, 80, 132}, {139, 61, 205, 17, 221, 32, 176, 98}, {95, 187, 17, 239, 0, 221, 51, 143}, {143, 51, 221, 0, 239, 17, 187, 95}, {98, 176, 32, 221, 17, 205, 61, 139}, {132, 80, 176, 51, 187, 61, 157, 105}, {114, 132, 98, 143, 95, 139, 105, 124}}; */ signed short temp[MATRIX_SIZE][MATRIX_SIZE], dctresult[MATRIX_SIZE][MATRIX_SIZE]; signed char output[MATRIX_SIZE][MATRIX_SIZE]; signed char bitstream[NUMBER_OF_PIXELS] ;//= {15,0,-2,-1,-1,-1,0,0,-1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; unsigned char header[389]; FILE *infile, *outfile; INFOHEADER *bmpheader; JPEGHEADER *jpegheader; LARGE_INTEGER st, en; unsigned int col, cols, row, rows, remaining,component; unsigned char amount_remaining, Ydcvalue, Cbdcvalue, Crdcvalue ; // bmpheader = (INFOHEADER *)malloc(sizeof(INFOHEADER)); bmpheader=&_bmpheader; switch (argc) { case 3 : encode = 0; break; case 4 : encode = 1; break; case 5 : encode = 1; compression = atoi(argv[4]); break; default : printf("invalid number of parameters\n\nUSAGE: jpegcodec source_file destination_file [/E] [compression_rate]\n"); printf("\nsource_file \t\t location of original file"); printf("\ndestination_file \t location of the new file"); printf("\n/E \t\t\t When set the source_file will be encoded to JPEG \n\t\t\t otherwise it will be decoded to BMP."); printf("\ncompression_rate \t specifies the compression ratio, defaults to the\n\t\t\t standard compression ratio. (Only valid when /D is set)\n"); system("PAUSE"); return 0; } infile = fopen(argv[1],"rb"); if (infile == NULL) { printf("Input file %s does not exist!\n\nUSAGE: jpegcodec source_file destination_file [/E] [compression_rate]\n",argv[1]); printf("\nsource_file \t\t location of original file"); printf("\ndestination_file \t location of the new file"); printf("\n/E \t\t\t When set the source_file will be encoded to JPEG \n\t\t\t otherwise it will be decoded to BMP."); printf("\ncompression_rate \t specifies the compression ratio, defaults to the\n\t\t\t standard compression ratio. (Only valid when /D is set)\n"); system("PAUSE"); } else { //start codec outfile = fopen(argv[2],"wb"); QueryPerformanceCounter(&st); if(encode) { //encode infile to JPEG if (getbmpheader(infile,bmpheader)) { //File is a valid BMP printf("\nImage width: %d pixels", bmpheader->width); printf("\nImage height: %d pixels", bmpheader->height); rows = bmpheader->height>>3; cols = bmpheader->width>>3; remaining=0x00; amount_remaining=0x00; Ydcvalue = 0x00; Crdcvalue = 0x00; Cbdcvalue = 0x00; writejpegheader(outfile,bmpheader); for (row = 0; row < rows; row++) { for (col = 0; col < cols; col++) { readbmpfile(infile,pixelmatrix,row,col,bmpheader); RGB2YCrCb(pixelmatrix,YMatrix,CrMatrix,CbMatrix); for(component=0;component<3;component++) { switch (component) { case 0 ://Y-encoding dct(YMatrix,dctresult); zzq(dctresult,bitstream,compression,encode); Ydcvalue = EncodeDataUnit(bitstream,Ydcvalue,outfile, &remaining, &amount_remaining,component); break; case 1 ://Cr-encoding dct(CrMatrix,dctresult); zzq(dctresult,bitstream,compression,encode); Crdcvalue = EncodeDataUnit(bitstream,Crdcvalue,outfile, &remaining, &amount_remaining,component); break; case 2 ://Cb-encoding dct(CbMatrix,dctresult); zzq(dctresult,bitstream,compression,encode); Cbdcvalue = EncodeDataUnit(bitstream,Cbdcvalue,outfile, &remaining, &amount_remaining,component); break; } } } } HuffmanEncodeFinishSend(&remaining,&amount_remaining,outfile); printf("\nProcessed %d %dx%d-blocks.",(row-1)*cols+col,MATRIX_SIZE,MATRIX_SIZE); //write JPEG footer writejpegfooter(outfile); } else { printf("\n%s is not a valid BMP-file",argv[1]); } } else { //decode infile to BMP // readjpegfile(infile,inputbuffer); // huffmancodec(inputbuffer,bitstream,encode); // zzq(pixelmatrix,bitstream,compression,encode); // DCT(dctmatrix,outputbuffer,encode); // writebmp(outputbuffer);*/ } fclose(outfile); fclose(infile); /* infile = fopen("test.jpg","rb"); outfile = fopen("header.h","wb"); fread(header,389,1,infile); for(i=0;i<389;i++) fprintf(outfile,"0x%x, ",header[i]); fclose(outfile); fclose(infile); */ QueryPerformanceCounter(&en); printf("\nExecution time: %f seconds",(double)(en.QuadPart-st.QuadPart)/1000000); // free(bmpheader); } printf("\n\nHit ENTER to close this window."); getchar(); return 0; } //--------------------------------------------------------------------------- 1.1 mb-jpeg/encoder/test.bmp http://www.opencores.org/cvsweb.shtml/mb-jpeg/encoder/test.bmp?rev=1.1&content-type=text/x-cvsweb-markup <<Binary file>> 1.1 mb-jpeg/encoder/types.h http://www.opencores.org/cvsweb.shtml/mb-jpeg/encoder/types.h?rev=1.1&content-type=text/x-cvsweb-markup Index: types.h =================================================================== typedef union { /* block of pixel-space values */ unsigned char block[8][8]; unsigned char linear[64]; } PBlock; typedef union { /* block of frequency-space values */ int block[8][8]; int linear[64]; } FBlock; 1.1 mb-jpeg/encoder/weights.h http://www.opencores.org/cvsweb.shtml/mb-jpeg/encoder/weights.h?rev=1.1&content-type=text/x-cvsweb-markup Index: weights.h =================================================================== signed int weights[512] = { 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16069, 13623, 9102, 3196, -3196, -9102, -13623, -16069, 15137, 6270, -6270, -15137, -15137, -6270, 6270, 15137, 13623, -3196, -16069, -9103, 9102, 16069, 3196, -13623, 11585, -11585, -11585, 11585, 11585, -11585, -11585, 11585, 9102, -16069, 3196, 13623, -13623, -3197, 16069, -9102, 6270, -15137, 15137, -6270, -6270, 15137, -15137, 6270, 3196, -9103, 13623, -16069, 16069, -13623, 9102, -3196, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16069, 13623, 9102, 3196, -3196, -9102, -13623, -16069, 15137, 6270, -6270, -15137, -15137, -6270, 6270, 15137, 13623, -3196, -16069, -9103, 9102, 16069, 3196, -13623, 11585, -11585, -11585, 11585, 11585, -11585, -11585, 11585, 9102, -16069, 3196, 13623, -13623, -3197, 16069, -9102, 6270, -15137, 15137, -6270, -6270, 15137, -15137, 6270, 3196, -9103, 13623, -16069, 16069, -13623, 9102, -3196, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16069, 13623, 9102, 3196, -3196, -9102, -13623, -16069, 15137, 6270, -6270, -15137, -15137, -6270, 6270, 15137, 13623, -3196, -16069, -9103, 9102, 16069, 3196, -13623, 11585, -11585, -11585, 11585, 11585, -11585, -11585, 11585, 9102, -16069, 3196, 13623, -13623, -3197, 16069, -9102, 6270, -15137, 15137, -6270, -6270, 15137, -15137, 6270, 3196, -9103, 13623, -16069, 16069, -13623, 9102, -3196, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16069, 13623, 9102, 3196, -3196, -9102, -13623, -16069, 15137, 6270, -6270, -15137, -15137, -6270, 6270, 15137, 13623, -3196, -16069, -9103, 9102, 16069, 3196, -13623, 11585, -11585, -11585, 11585, 11585, -11585, -11585, 11585, 9102, -16069, 3196, 13623, -13623, -3197, 16069, -9102, 6270, -15137, 15137, -6270, -6270, 15137, -15137, 6270, 3196, -9103, 13623, -16069, 16069, -13623, 9102, -3196, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16069, 13623, 9102, 3196, -3196, -9102, -13623, -16069, 15137, 6270, -6270, -15137, -15137, -6270, 6270, 15137, 13623, -3196, -16069, -9103, 9102, 16069, 3196, -13623, 11585, -11585, -11585, 11585, 11585, -11585, -11585, 11585, 9102, -16069, 3196, 13623, -13623, -3197, 16069, -9102, 6270, -15137, 15137, -6270, -6270, 15137, -15137, 6270, 3196, -9103, 13623, -16069, 16069, -13623, 9102, -3196, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16069, 13623, 9102, 3196, -3196, -9102, -13623, -16069, 15137, 6270, -6270, -15137, -15137, -6270, 6270, 15137, 13623, -3196, -16069, -9103, 9102, 16069, 3196, -13623, 11585, -11585, -11585, 11585, 11585, -11585, -11585, 11585, 9102, -16069, 3196, 13623, -13623, -3197, 16069, -9102, 6270, -15137, 15137, -6270, -6270, 15137, -15137, 6270, 3196, -9103, 13623, -16069, 16069, -13623, 9102, -3196, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16069, 13623, 9102, 3196, -3196, -9102, -13623, -16069, 15137, 6270, -6270, -15137, -15137, -6270, 6270, 15137, 13623, -3196, -16069, -9103, 9102, 16069, 3196, -13623, 11585, -11585, -11585, 11585, 11585, -11585, -11585, 11585, 9102, -16069, 3196, 13623, -13623, -3197, 16069, -9102, 6270, -15137, 15137, -6270, -6270, 15137, -15137, 6270, 3196, -9103, 13623, -16069, 16069, -13623, 9102, -3196, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16384, 16069, 13623, 9102, 3196, -3196, -9102, -13623, -16069, 15137, 6270, -6270, -15137, -15137, -6270, 6270, 15137, 13623, -3196, -16069, -9103, 9102, 16069, 3196, -13623, 11585, -11585, -11585, 11585, 11585, -11585, -11585, 11585, 9102, -16069, 3196, 13623, -13623, -3197, 16069, -9102, 6270, -15137, 15137, -6270, -6270, 15137, -15137, 6270, 3196, -9103, 13623, -16069, 16069, -13623, 9102, -3196 }; 1.1 mb-jpeg/encoder/zzq.c http://www.opencores.org/cvsweb.shtml/mb-jpeg/encoder/zzq.c?rev=1.1&content-type=text/x-cvsweb-markup Index: zzq.c =================================================================== //--------------------------------------------------------------------------- #include <stdio.h> #include "zzq.h" #pragma hdrstop //--------------------------------------------------------------------------- #pragma argsused void zzq(signed short pixelmatrix[MATRIX_SIZE][MATRIX_SIZE], signed char *bitstream, int compression, int encode) { unsigned char quantization_table[MATRIX_SIZE][MATRIX_SIZE] ={ {4, 3, 3, 4, 4, 5, 6, 6}, {3, 3, 4, 4, 5, 6, 6, 6}, {4, 4, 4, 4, 5, 6, 6, 6}, {4, 4, 4, 5, 6, 6, 6, 6}, {4, 4, 5, 6, 6, 7, 7, 6}, {4, 5, 6, 6, 6, 7, 7, 6}, {6, 6, 6, 6, 7, 7, 7, 7}, {6, 6, 6, 7, 7, 7, 7, 7} }; int i, x, y, jumped, deltax, deltay; x = y = deltax = deltay = jumped = 0; // printf("\nZigZag order pixelmatrix:\n\n"); for(i=0;i<NUMBER_OF_PIXELS;i++) { if (encode == 0) { pixelmatrix[y][x] = (bitstream[i]*quantization_table[y][x]); } else { if(pixelmatrix[y][x]>0) bitstream[i] = (pixelmatrix[y][x]>>quantization_table[y][x]); else bitstream[i] = -((-pixelmatrix[y][x])>>quantization_table[y][x]); // printf("%i ",bitstream[i]); } if((y == 0) || (y == MATRIX_SIZE-1)) { //on top or bottom side of matrix if(!jumped) { //first jump to element on the right x++; jumped = 1; } else { //modify direction if(i<(NUMBER_OF_PIXELS>>1)) { deltax = -1; deltay = 1; } else { deltax = 1; deltay = -1; } x += deltax; y += deltay; jumped = 0; } } else if ((x == 0) || (x == MATRIX_SIZE-1)) { //on left or right side of matrix if(!jumped) { //jump to element below y++; jumped = 1; } else { //modify direction if(i<(NUMBER_OF_PIXELS>>1)) { deltax = 1; deltay = -1; } else { deltax = -1; deltay = 1; } x += deltax; y += deltay; jumped = 0; } } else {//not on the edges of the matrix x += deltax; y += deltay; } } } //--------------------------------------------------------------------------- 1.1 mb-jpeg/encoder/zzq.h http://www.opencores.org/cvsweb.shtml/mb-jpeg/encoder/zzq.h?rev=1.1&content-type=text/x-cvsweb-markup Index: zzq.h =================================================================== #ifndef _ZZQ_H #define _ZZQ_H 1 #define MATRIX_SIZE 8 #define NUMBER_OF_PIXELS MATRIX_SIZE*MATRIX_SIZE /* * ZigZag order the pixelmatrix and quantify its values, if endode == 0 the * inverse operation will be caried out. */ void zzq(signed short pixelmatrix[MATRIX_SIZE][MATRIX_SIZE], signed char *bitstream, int compression, int encode); #else #error "ERROR file zzq.h multiple times included" #endif /* --- _ZZQ_H --- */