www.pudn.com > JpegTest.rar > JPEGAPP.C

#include "jpegdec.h" 
#include  
#include  
char *FileName="image.jpg"; 
extern char error_string[90]; 
 
typedef struct s_BM_header { 
			  WORD BMP_id ; // 'B''M' 
			  DWORD size; // size in bytes of the BMP file 
			  DWORD zero_res; // 0 
			  DWORD offbits; // 54 
			  DWORD biSize; // 0x28 
			  DWORD Width;  // X 
			  DWORD Height;  // Y 
			  WORD  biPlanes; // 1 
			  WORD  biBitCount ; // 24 
			  DWORD biCompression; // 0 = BI_RGB 
			  DWORD biSizeImage; // 0 
			  DWORD biXPelsPerMeter; // 0xB40 
			  DWORD biYPelsPerMeter; // 0xB40 
			  DWORD biClrUsed; //0 
			  DWORD biClrImportant; //0 
} BM_header; 
typedef struct s_RGB { 
			 BYTE B; 
		     BYTE G; 
		     BYTE R; 
} RGB; 
 
void exitmessage(char *message) 
{ 
 printf("%s\n",message);exit(0); 
} 
 
void write_buf_to_BMP(BYTE *im_buffer, WORD X_bitmap, WORD Y_bitmap, char *BMPname) 
{ 
 SWORD x,y; 
 RGB *pixel; 
 BM_header BH; 
 FILE *fp_bitmap; 
 DWORD im_loc_bytes; 
 BYTE nr_fillingbytes, i; 
 BYTE zero_byte=0; 
 
 fp_bitmap=fopen(BMPname,"wb"); 
 if (fp_bitmap==NULL) exitmessage("File cannot be created"); 
 
 if (X_bitmap%4!=0) nr_fillingbytes=4-((X_bitmap*3L)%4); 
  else nr_fillingbytes=0; 
 
 BH.BMP_id = 'M'*256+'B';     fwrite(&BH.BMP_id,2,1,fp_bitmap); 
 BH.size=54+Y_bitmap*(X_bitmap*3+nr_fillingbytes);fwrite(&BH.size,4,1,fp_bitmap); 
 BH.zero_res = 0;             fwrite(&BH.zero_res,4,1,fp_bitmap); 
 BH.offbits = 54;             fwrite(&BH.offbits,4,1,fp_bitmap); 
 BH.biSize = 0x28;            fwrite(&BH.biSize,4,1,fp_bitmap); 
 BH.Width = X_bitmap;	      fwrite(&BH.Width,4,1,fp_bitmap); 
 BH.Height = Y_bitmap;	      fwrite(&BH.Height,4,1,fp_bitmap); 
 BH.biPlanes = 1;             fwrite(&BH.biPlanes,2,1,fp_bitmap); 
 BH.biBitCount = 24;          fwrite(&BH.biBitCount,2,1,fp_bitmap); 
 BH.biCompression = 0;        fwrite(&BH.biCompression,4,1,fp_bitmap); 
 BH.biSizeImage = 0;          fwrite(&BH.biSizeImage,4,1,fp_bitmap); 
 BH.biXPelsPerMeter = 0xB40;  fwrite(&BH.biXPelsPerMeter,4,1,fp_bitmap); 
 BH.biYPelsPerMeter = 0xB40;  fwrite(&BH.biYPelsPerMeter,4,1,fp_bitmap); 
 BH.biClrUsed = 0;	          fwrite(&BH.biClrUsed,4,1,fp_bitmap); 
 BH.biClrImportant = 0;	      fwrite(&BH.biClrImportant,4,1,fp_bitmap); 
 
 printf("Writing bitmap ...\n"); 
 im_loc_bytes=(DWORD)im_buffer+((DWORD)Y_bitmap-1)*X_bitmap*4; 
 
 for (y=0;y