Kraklog
Day.77 BMP 구현 본문
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#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#pragma pack(1)
#define ee
#if defined(ee)
typedef struct _BITMAPFILEHEADER {
char Signature[2];
unsigned int FileSize;
int Reserved;
unsigned int DataOffset;
} BITMAPFILEHEADER;
typedef struct _InfoHeader {
unsigned int Size;
int Width;
int Height;
unsigned short Planes;
unsigned short BitCount;
unsigned int Compression;
unsigned int ImageSize;
int X_PixelsPerM;
int Y_PixelsPerM;
unsigned int ColorsUsed;
unsigned int ColorsImportant;
} InfoHeader;
typedef struct _ColorTable {
unsigned char rgb_Blue;
unsigned char rgb_Green;
unsigned char rgb_Red;
unsigned char rgb_Reserved;
} ColorTable;
int main() {
BITMAPFILEHEADER HEADER;
InfoHeader Info;
HEADER.Signature[0] = 'B';
HEADER.Signature[1] = 'M';
HEADER.FileSize = sizeof(BITMAPFILEHEADER) + sizeof(InfoHeader) + 256 * sizeof(ColorTable) + 640 * 480;
HEADER.DataOffset = sizeof(BITMAPFILEHEADER) + sizeof(InfoHeader) + 256 * sizeof(ColorTable);
Info.Size = 40;
Info.Width = 640;
Info.Height = 480;
Info.Planes = 1;
Info.BitCount = 8;
Info.Compression = 0;
Info.ImageSize = 0;
Info.X_PixelsPerM = 0;
Info.Y_PixelsPerM = 0;
Info.ColorsUsed = 256;
Info.ColorsImportant = 0;
FILE* BMP_GEN;
if (fopen_s(&BMP_GEN, "BMP_GEN.bmp", "wb") == 0) {
fwrite(&HEADER, sizeof(BITMAPFILEHEADER), 1, BMP_GEN);
fwrite(&Info, sizeof(InfoHeader), 1, BMP_GEN);
ColorTable colorTable[256];
// 색상 테이블 생성
for (int i = 0; i < 256; i++) {
if (i < 32) {
// 흰색
colorTable[i].rgb_Blue = 100;
colorTable[i].rgb_Green = 100;
colorTable[i].rgb_Red = 100;
}
else if (i < 64) {
// 노란색
colorTable[i].rgb_Blue = 000;
colorTable[i].rgb_Green = 100;
colorTable[i].rgb_Red = 100;
}
else if (i < 96) {
// 옥색
colorTable[i].rgb_Blue = 100;
colorTable[i].rgb_Green = 100;
colorTable[i].rgb_Red = 000;
}
else if (i < 128) {
// 초록색
colorTable[i].rgb_Blue = 000;
colorTable[i].rgb_Green = 100;
colorTable[i].rgb_Red = 000;
}
else if (i < 160) {
// 자홍색
colorTable[i].rgb_Blue = 100;
colorTable[i].rgb_Green = 000;
colorTable[i].rgb_Red = 100;
}
else if (i < 192) {
// 빨간색
colorTable[i].rgb_Blue = 100;
colorTable[i].rgb_Green = 000;
colorTable[i].rgb_Red = 000;
}
else if (i < 224) {
// 파란색
colorTable[i].rgb_Blue = 000;
colorTable[i].rgb_Green = 000;
colorTable[i].rgb_Red = 100;
}
else {
// 검정색
colorTable[i].rgb_Blue = 000;
colorTable[i].rgb_Green = 000;
colorTable[i].rgb_Red = 000;
}
}
fwrite(colorTable, sizeof(ColorTable), 256, BMP_GEN);
// 픽셀 데이터 생성 및 쓰기
for (int y = 0; y < 480; y++) {
for (int x = 0; x < 80; x++) {
fputc(0, BMP_GEN); // 파란색 컬러 인덱스 사용
}
for (int x = 80; x < 160; x++) {
fputc(32, BMP_GEN); // 초록색
}
for (int x = 160; x < 240; x++) {
fputc(64, BMP_GEN); // 노란색
}
for (int x = 240; x < 320; x++) {
fputc(96, BMP_GEN); // 빨간색
}
for (int x = 320; x < 400; x++) {
fputc(128, BMP_GEN); // 자홍색
}
for (int x = 400; x < 480; x++) {
fputc(160, BMP_GEN); // 파란색
}
for (int x = 480; x < 560; x++) {
fputc(192, BMP_GEN); // 초록색
}
for (int x = 560; x < 640; x++) {
fputc(255, BMP_GEN); // 검정색
}
}
fclose(BMP_GEN);
return 0;
}
}
#elif defined(one)
typedef struct _BITMAPFILEHEADER //BITMAPFILEHEADER total : 40byte
{
char Signature[2] ;
unsigned int FileSize ;
int Reserved ;
unsigned int DataOffset ;
}BITMAPFILEHEADER;
typedef struct _InfoHeader {
unsigned int Size ;//Bitmap info Header size
unsigned int Width ; //Bitmap info Header width
unsigned int Height ;//Bitmap info Header Height
unsigned short Planes ;
unsigned short BitCount ;
unsigned int Compression ;
unsigned int ImageSize ;
int X_PixelsPerM ;
int Y_PixelsPerM ;
unsigned int ColorsUsed ;
unsigned int ColorsImportant ;
}InfoHeader;
typedef struct _ColorTable {
unsigned char rgb_Blue ;
unsigned char rgb_Green ;
unsigned char rgb_Red ;
unsigned char rgb_Reserved ;
}ColorTable;
int main()
{
BITMAPFILEHEADER HEADER;
InfoHeader Info;
ColorTable RGB;
HEADER.Signature[0] ='B';
HEADER.Signature[1] ='M';
HEADER.FileSize = sizeof(BITMAPFILEHEADER) + sizeof(InfoHeader) + sizeof(ColorTable) + 640*480*3;//x pixel * y pixel * 3 byte (8+8+8 bits)
HEADER.DataOffset = sizeof(BITMAPFILEHEADER) + sizeof(InfoHeader)+ sizeof(ColorTable);
Info.Size = 40;
Info.Width = 640;
Info.Height = 480;
Info.Planes = 1;
Info.BitCount = 24; //bits per pixel
Info.Compression = 0;
Info.ImageSize = 0; //bitcount에 따라서 결정 됨
/* Info.X_PixelsPerM (dpi)
Info.Y_PixelsPerM
Info.ColorsUsed
Info.ColorsImportant //할당하지 않으면 all(0=all) */
FILE *BMP_GEN;
BMP_GEN= fopen("BMP_GEN.bmp", "wb");//wb는 읽고 쓰기 모드
ColorTable ColorTable;
for (int y = 0; y < 480; y++) {
for (int x = 0; x < 640; x++) {
}
}
fclose(BMP_GEN);//fopen을 하면 닫아줘야함
return 0;
}
#endif
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include "bmp_gen_h.h"
#pragma pack(1)
#define _GRAY_SCALE_
void print_prt(void* p, int size) {
int i;
for (i = 0; i < size; i++) {
printf("\t p[%d]=0x%x \n", i, *((unsigned char*)p + i));
}
}
int main(void)
{
int bmpHeaderSig_sz;
int bmpHeader_sz;
int bmpInfoHeader_sz;
unsigned char bmp_img[VERTICAL][HORIZONTAL][PIXELS];
bmp_Header_Sig headerSig;
bmp_Header_Sig *phd_Sig;
bmp_Header header;
bmp_Header *pHD;
bmp_InfoHeader infoHeader;
bmp_InfoHeader * pInfoHD;
bmpHeaderSig_sz = sizeof(bmp_Header); //12byte
bmpHeader_sz = sizeof(bmp_Header_Sig); //14 - 2 = 12byte
bmpInfoHeader_sz = sizeof(bmp_InfoHeader); //40byte
printf("BMP generator !!\n");
printf("bmp_Header_Sig size = %d \n", bmpHeader_sz);//2
printf("bmp_Header size = %d \n", bmpHeaderSig_sz);//12
printf("bmp_InfoHeader size = %d \n", bmpInfoHeader_sz);//40
printf("pInfoHD size = %d\n", sizeof(pInfoHD));
printf("pInfoHD size = %d\n", sizeof(*pInfoHD));
memset(&headerSig , 0 , sizeof(bmp_Header_Sig));
memset(&header , 0 , sizeof(bmp_Header));
memset(&infoHeader , 0 , sizeof(bmp_InfoHeader));
headerSig.Signature = ('M' << 8 | 'B');
//headerSig.Signature = "BM"; //char[0] char[1] 형식으로 주던가 해야 제대로 들어가짐
pHD = &header; //포인터로 선언
pHD->FileSize =bmpHeaderSig_sz+bmpHeader_sz+bmpInfoHeader_sz+HORIZONTAL*VERTICAL*PIXELS ; //이렇게 작성해야 File size안에 값이 들어감
pHD->DataOffset = bmpHeaderSig_sz + bmpHeader_sz + bmpInfoHeader_sz;
print_prt((void*)pHD , bmpHeaderSig_sz);
//bmp_InfoHeader infoHeader;
//bmp_InfoHeader* pInfoHD;
infoHeader.Size = sizeof(bmp_Header); // 40byte가 이미 할당되어 있으니 하나하나 채워넣거나
pInfoHD = &infoHeader;
pInfoHD->Size = sizeof(bmp_InfoHeader);
pInfoHD->Width = HORIZONTAL;
pInfoHD->Height = VERTICAL;
pInfoHD->Planes =1;
pInfoHD->BitCount=8*PIXELS;
pInfoHD->Compression = 0; //
printf("\nbmpInfo Header \n");
print_prt((void*)pInfoHD, bmpInfoHeader_sz);
/*for (int y = 0; y<VERTICAL; y++) {
for (int x = 0; x < 80; x++) {
bmp_img[y][x][2] = 255;//R
bmp_img[y][x][1] = 255;//G
bmp_img[y][x][0] = 255;//B
}
for (int x = 80; x < 160; x++) {//128
bmp_img[y][x][2] = 192;
bmp_img[y][x][1] = 192;
bmp_img[y][x][0] = 0;
}
for (int x = 160; x < 240; x++) {
bmp_img[y][x][2] = 0;
bmp_img[y][x][1] = 192;
bmp_img[y][x][0] = 192;
}
for (int x = 240; x < 320; x++) {
bmp_img[y][x][2] = 0;
bmp_img[y][x][1] = 192;
bmp_img[y][x][0] = 0;
}
for (int x = 320; x < 400; x++) {
bmp_img[y][x][2] = 192;
bmp_img[y][x][1] = 0;
bmp_img[y][x][0] = 192;
}
for (int x = 400; x < 480; x++) {
bmp_img[y][x][2] = 192;
bmp_img[y][x][1] = 0;
bmp_img[y][x][0] = 0;
}
for (int x = 480; x < 560; x++) {
bmp_img[y][x][2] = 0;
bmp_img[y][x][1] = 0;
bmp_img[y][x][0] = 192;
}
for (int x = 560; x < HORIZONTAL; x++) {
bmp_img[y][x][2] = 0;
bmp_img[y][x][1] = 0;
bmp_img[y][x][0] = 0;
}
}*/
#if defined (_GRAY_SCALE_)
unsigned char gray;
#endif
unsigned char r, g, b;
for (int y = 0; y < VERTICAL; y++) {
for (int x = 0; x < HORIZONTAL; x++) {
if (x < 1*CLOLR_BAR_WD) { r = 255; g = 255; b = 255; }
else if (x >= 1 * CLOLR_BAR_WD && x <2 * CLOLR_BAR_WD) { r = 192; g = 192; b = 0; }
else if (x >= 2 * CLOLR_BAR_WD && x < 3 * CLOLR_BAR_WD) { r = 0; g = 192; b = 192; }
else if (x >= 3 * CLOLR_BAR_WD && x < 4 * CLOLR_BAR_WD) { r = 0; g = 192; b = 0; }
else if (x >= 4 * CLOLR_BAR_WD && x < 5 * CLOLR_BAR_WD) { r = 192; g = 0; b = 192; }
else if (x >= 5 * CLOLR_BAR_WD && x < 6 * CLOLR_BAR_WD) { r = 192; g = 0; b = 0; }
else if (x >= 6 * CLOLR_BAR_WD && x < 7 * CLOLR_BAR_WD) { r = 0; g = 0; b = 192; }
else { r = 0; g = 0; b = 0 ; }
#if defined (_GRAY_SCALE_)
gray = 0.3 * r + 0.59 * g + 0.11 * b;
r = gray;
g = gray;
b = gray;
#endif
bmp_img[y][x][0] = r;
bmp_img[y][x][1] = g;
bmp_img[y][x][2] = b; //frame buffer
}
}
FILE* fp = fopen(BMP_FILE_NAME, "wb");
fwrite((unsigned char*)&headerSig, 1, sizeof(bmp_Header_Sig), fp);
fwrite((unsigned char*)&header, 1, sizeof(header), fp);
fwrite((unsigned char*)&infoHeader, 1, sizeof(infoHeader), fp);
fwrite((unsigned char*)&bmp_img, 1, sizeof(bmp_img), fp);
printf("BMP generated... \n");
fclose(fp);
return 0;
}#pragma once
#if !defined(_BMP_GEN_H_)
#define _BMP_GEN_H_
#define HORIZONTAL (640)
#define VERTICAL (480)
#define PIXELS (3)
#define BMP_FILE_NAME ("generated_bmp.bmp")
typedef struct {
short Signature;
}bmp_Header_Sig; //2byte
typedef struct {
//short Signature[2];
unsigned int FileSize;
unsigned int reserved;
unsigned int DataOffset;
}bmp_Header; //12byte
#if 1
typedef struct {
int Size;
int Width;
int Height;
short Planes;
short BitCount;
int Compression;
int ImageSize;
int X_PixelsPerM;
int Y_PixelsPerM;
int ColorsUsed;
int ColorsImportant;
}bmp_InfoHeader; //40byte
#endif
#endif
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