output_lcd.zip_LCD JPG_bmp像素点

/* #include "jpeg.h" #include "memory.h" #include "math.h" #include "stdio.h" #include "windows.h" */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #include <sys/types.h> #include <sys/stat.h> #include "jpeg.h" #include "header.h" //macro definition #define WIDTHBYTES(i) ((i+31)/32*4) #define PI 3.1415926535 //define return value of function #define FUNC_OK 0 #define FUNC_MEMORY_ERROR 1 #define FUNC_FILE_ERROR 2 #define FUNC_FORMAT_ERROR 3 ////////////////////////////////////////////////// //Jpeg functions char* LoadJpegFile(char *jpegbuf,char *bmpbuf); void showerror(int funcret); int InitTag(); void InitTable(); int Decode(); int DecodeMCUBlock(); int HufBlock(unsigned char dchufindex,unsigned char achufindex); int DecodeElement(); void IQtIZzMCUComponent(short flag); void IQtIZzBlock(short *s ,int * d,short flag); void GetYUV(short flag); void StoreBuffer(); BYTE ReadByte(); void Initialize_Fast_IDCT(); void Fast_IDCT(int * block); void idctrow(int * blk); void idctcol(int * blk); ////////////////////////////////////////////////// //global variable declaration BITMAPFILEHEADER bf; BITMAPINFOHEADER bi; void* hImgData=NULL; DWORD NumColors; DWORD LineBytes; DWORD ImgWidth=0 , ImgHeight=0; unsigned int PcxBytesPerLine; LPSTR lpPtr; ////////////////////////////////////////////////// //variables used in jpeg function short SampRate_Y_H,SampRate_Y_V; short SampRate_U_H,SampRate_U_V; short SampRate_V_H,SampRate_V_V; short H_YtoU,V_YtoU,H_YtoV,V_YtoV; short Y_in_MCU,U_in_MCU,V_in_MCU; unsigned char *lpJpegBuf; unsigned char *lp; short qt_table[3][64]; short comp_num; BYTE comp_index[3]; BYTE YDcIndex,YAcIndex,UVDcIndex,UVAcIndex; BYTE HufTabIndex; short *YQtTable,*UQtTable,*VQtTable; BYTE And[9]={0,1,3,7,0xf,0x1f,0x3f,0x7f,0xff}; short code_pos_table[4][16],code_len_table[4][16]; unsigned short code_value_table[4][256]; unsigned short huf_max_value[4][16],huf_min_value[4][16]; short BitPos,CurByte; short rrun,vvalue; short MCUBuffer[10*64]; int QtZzMCUBuffer[10*64]; short BlockBuffer[64]; short ycoef,ucoef,vcoef; BOOL IntervalFlag; short interval=0; int Y[4*64],U[4*64],V[4*64]; DWORD sizei,sizej; short restart; static long iclip[1024]; static long *iclp; //////////////////////////////////////////////////////////////// char* LoadJpegFile (char *jpegbuf, char *bmpbuf) { printf("load 0 \n"); DWORD ImgSize; DWORD JpegBufSize; int funcret; LPBITMAPINFOHEADER lpImgData; //JpegBufSize=size; lpJpegBuf=jpegbuf; InitTable(); printf("load 0.1 \n"); if((funcret=InitTag())!=FUNC_OK) { showerror(funcret); return NULL; } printf("load 1 \n"); //create new bitmapfileheader and bitmapinfoheader memset((char *)&bf,0,sizeof(BITMAPFILEHEADER)); memset((char *)&bi,0,sizeof(BITMAPINFOHEADER)); printf("load 2 \n"); bi.biSize=(DWORD)sizeof(BITMAPINFOHEADER); bi.biWidth=(LONG)(ImgWidth); bi.biHeight=(LONG)(ImgHeight); bi.biPlanes=1; bi.biBitCount=24; bi.biClrUsed=0; bi.biClrImportant=0; bi.biCompression=BI_RGB; NumColors=0; LineBytes=(DWORD)WIDTHBYTES(bi.biWidth*bi.biBitCount); ImgSize=(DWORD)LineBytes*bi.biHeight; bf.bfType=0x4d42; bf.bfSize=/*sizeof(BITMAPFILEHEADER)*/ 14+sizeof(BITMAPINFOHEADER)+NumColors*sizeof(RGBQUAD)+ImgSize; bf.bfOffBits=(DWORD)(NumColors*sizeof(RGBQUAD)+14/*sizeof(BITMAPFILEHEADER)*/+sizeof(BITMAPINFOHEADER)); lpPtr = (char*)bmpbuf + 54; printf("load 3 \n"); if((SampRate_Y_H==0)||(SampRate_Y_V==0)) { showerror(FUNC_FORMAT_ERROR); return NULL ; } funcret=Decode(); memcpy(bmpbuf, &bf.bfType,sizeof(WORD)); memcpy(bmpbuf+2, ((char*)&bf)+4, 12); memcpy(bmpbuf+14, (LPSTR)&bi,sizeof(BITMAPINFOHEADER)); if(funcret!=FUNC_OK) { showerror(funcret); return NULL; } return lpPtr; } ///////////////////////////////////////////////// void showerror(int funcret) { switch(funcret) { case FUNC_MEMORY_ERROR: printf("Error alloc memory!\n"); exit(1); break; case FUNC_FILE_ERROR: printf("File not found!!\n"); exit(1); break; case FUNC_FORMAT_ERROR: printf("File format error!\n"); exit(1); break; } } //////////////////////////////////////////////////////////////////////////////// int InitTag() { BOOL finish=FALSE; BYTE id; short llength; short i,j,k; short huftab1,huftab2; short huftabindex; BYTE hf_table_index; BYTE qt_table_index; BYTE comnum; unsigned char *lptemp; short ccount; printf("init tag 1 \n"); lp=lpJpegBuf+2; while (!finish) { //printf("init tag 2 \n"); id=*(lp+1); // printf("id = 0x%x\n",id); //printf("init tag 3 \n"); lp+=2; //printf("init tag 4 \n"); switch (id) { case M_APP0: printf("M_APP0\n"); llength=MAKEWORD(*(lp+1),*lp); lp+=llength; break; case M_DQT: printf("M_DQT\n"); llength=MAKEWORD(*(lp+1),*lp); qt_table_index=(*(lp+2))&0x0f; lptemp=lp+3; if(llength<80) { for(i=0;i<64;i++) qt_table[qt_table_index][i]=(short)*(lptemp++); } else { for(i=0;i<64;i++) qt_table[qt_table_index][i]=(short)*(lptemp++); qt_table_index=(*(lptemp++))&0x0f; for(i=0;i<64;i++) qt_table[qt_table_index][i]=(short)*(lptemp++); } lp+=llength; break; case M_SOF0: printf("M_SOF0\n"); llength=MAKEWORD(*(lp+1),*lp); ImgHeight=MAKEWORD(*(lp+4),*(lp+3)); ImgWidth=MAKEWORD(*(lp+6),*(lp+5)); comp_num=*(lp+7); if((comp_num!=1)&&(comp_num!=3)) return FUNC_FORMAT_ERROR; if(comp_num==3) { comp_index[0]=*(lp+8); SampRate_Y_H=(*(lp+9))>>4; SampRate_Y_V=(*(lp+9))&0x0f; YQtTable=(short *)qt_table[*(lp+10)]; comp_index[1]=*(lp+11); SampRate_U_H=(*(lp+12))>>4; SampRate_U_V=(*(lp+12))&0x0f; UQtTable=(short *)qt_table[*(lp+13)]; comp_index[2]=*(lp+14); SampRate_V_H=(*(lp+15))>>4; SampRate_V_V=(*(lp+15))&0x0f; VQtTable=(short *)qt_table[*(lp+16)]; } else { comp_index[0]=*(lp+8); SampRate_Y_H=(*(lp+9))>>4; SampRate_Y_V=(*(lp+9))&0x0f; YQtTable=(short *)qt_table[*(lp+10)]; comp_index[1]=*(lp+8); SampRate_U_H=1; SampRate_U_V=1; UQtTable=(short *)qt_table[*(lp+10)]; comp_index[2]=*(lp+8); SampRate_V_H=1; SampRate_V_V=1; VQtTable=(short *)qt_table[*(lp+10)]; } lp+=llength; break; case M_DHT: printf("M_DHT\n"); llength=MAKEWORD(*(lp+1),*lp); if (llength<0xd0) { huftab1=(short)(*(lp+2))>>4; //huftab1=0,1 huftab2=(short)(*(lp+2))&0x0f; //huftab2=0,1 huftabindex=huftab1*2+huftab2; lptemp=lp+3; for (i=0; i<16; i++) code_len_table[huftabindex][i]=(short)(*(lptemp++)); j=0; for (i=0; i<16; i++) if(code_len_table[huftabindex][i]!=0) { k=0; while(k<code_len_table[huftabindex][i]) { code_value_table[huftabindex][k+j]=(short)(*(lptemp++)); k++; } j+=k; } i=0; while (code_len_table[huftabindex][i]==0) i++; for (j=0;j<i;j++) { huf_min_value[huftabindex][j]=0; huf_max_value[huftabindex][j]=0; } huf_min_value[huftabindex][i]=0; huf_max_value[huftabindex][i]=code_len_table[huftabindex][i]-1; for (j=i+1;j<16;j++) { huf_min_value[huftabindex][j]=(huf_max_value[huftabindex][j-1]+1)<<1; huf_max_value[huftabindex][j]=huf_min_value[huftabindex][j]+code_len_table[huftabindex][j]-1; } code_pos_table[huftabindex][0]=0; for (j=1;j<16;j++) code_pos_table[huftabindex][j]=code_len_table[huftabindex][j-1]+code_pos_table[huftabindex][j-1]; lp+=llength; } //if else { hf_table_index=*(lp+2); lp+=2; while (hf_table_index!=0xff) { huftab1=(short)hf_table_index>>4; //huftab1=0,1 huftab2=(short)hf_table_index&0x0f; //huf